КОМБИНИРОВАННЫЙ СУХОЙ ЭЛЕКТРОННЫЙ ТРАНСФОРМАТОР С ОРГАНИЧЕСКОЙ ИЗОЛЯЦИЕЙ ДЛЯ ВЫВОДА ОПТИЧЕСКИХ СИГНАЛОВ

Изобретение относится к электротехнике и может быть использовано в сухих электронных трансформаторах для вывода сигнала, используемого для измерения тока и напряжения или запуска релейной защиты на трансформаторной подстанции. Технический результат состоит в повышении надежности. В заявленном комбинированном сухом электронном трансформаторе с органической изоляцией для вывода оптического сигнала изолятор емкостного делителя напряжения с органической изоляцией используется как основной изолятор для выдерживания полностью всего высокого напряжения. Катушка без сердечника намотана на отвод конденсаторной обкладки в изоляторе емкостного делителя напряжения для измерения тока. Низкий сигнал напряжения снимается с конденсаторной обкладки, расположенной рядом с отводом конденсаторной обкладки в изоляторе емкостного делителя напряжения для измерения напряжения, после чего полученный сигнал тока или напряжения преобразуется в оптический сигнал преобразователем, который преобразует электрический сигнал в выводной оптический сигнал. Катушка без сердечника в качестве датчика тока имеет нулевой потенциал, а конденсатор в качестве датчика напряжения имеет низкий потенциал. 2 н. и 8 з.п. ф-лы, 4 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 353 994 (13) C2 (51) МПК H01F 38/34 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21), (22) Заявка: 2007120393/09, 30.06.2005 (24) Дата начала отсчета срока действия патента: 30.06.2005 (73) Патентообладатель(и): БЭЙЦЗИН ЖУЙХЭН СЬЮПЕР ХАЙ ВОЛТИДЖ ЭЛЕКТРИКАЛ ЭКВИПМЕНТ РЕСЕРЧ ИНСТИТЬЮТ (CN) (43) Дата публикации заявки: 10.12.2008 2 3 5 3 9 9 4 (45) Опубликовано: 27.04.2009 Бюл. № 12 (56) Список документов, цитированных в отчете о поиске: RU 2145131 С1, 27.01.2000. SU 1078479 А1, 07.03.1984. SU 954001 А, 26.08.1982. SU 524235 А, 05.08.1976. JP 2004117340 А, 15.04.2004. KR 2002006008 А, 18.01.2002. WO 9915906 А, 01.04.1999. 2 3 5 3 9 9 4 R U (86) Заявка PCT: CN 2005/000955 ...

ЭЛЕКТРИЧЕСКОЕ ОБОРУДОВАНИЕ, УСТАНОВЛЕННОЕ НА КРЫШЕ ЖЕЛЕЗНОДОРОЖНОГО ТРАНСПОРТНОГО СРЕДСТВА НА ЭЛЕКТРИЧЕСКОЙ ТЯГЕ

Изобретение относится к области железнодорожного транспорта и направлено на усовершенствование железнодорожного транспортного средства на электрической тяге. Транспортное средство оборудовано, по меньшей мере, одним токоприемником и потолочной линией, направляющей ток, снимаемый с контактной линии от соединения с указанным токоприемником к электрическим тяговым устройствам транспортного средства, при этом электрическое оборудование содержит прибор разъединения для защиты электрических тяговых устройств и установлено на механической опоре. Электрическое оборудование также содержит: измерительное устройство, содержащее, по меньшей мере, средства измерения силы тока, передаваемого от контактной линии на потолочную линию и вычислительное устройство, которое управляет активацией указанного прибора разъединения. 8 з.п. ф-лы, 4 ил.

СПОСОБ ИЗМЕРЕНИЯ ИМПЕДАНСА ЭЛЕКТРИЧЕСКОГО КАБЕЛЯ, КОМПОНОВКА СОЕДИНИТЕЛЯ И ИХ ПРИМЕНЕНИЕ

СПОСОБ И СИСТЕМА ДИНАМИЧЕСКОГО ОБНАРУЖЕНИЯ НЕИСПРАВНОСТЕЙ В ЭЛЕКТРИЧЕСКОЙ СЕТИ

УСТРОЙСТВО ИЗМЕРЕНИЯ ЭЛЕКТРИЧЕСКОЙ ЭНЕРГИИ, ПОДАВАЕМОЙ НА ЖЕЛЕЗНОДОРОЖНУЮ СИЛОВУЮ ТЯГОВУЮ УСТАНОВКУ

... 1. Устройство измерения электрической энергии, подаваемой на железнодорожную силовую тяговую установку через линию (1) высокого напряжения, содержащее средства (5, 26) измерения силы тока питания и средства (12, 27) измерения напряжения этого питания, при этом указанные средства измерения содержат источник питания низкого напряжения, необходимый для их работы, отличающееся тем, что энергией питания низкого напряжения является оптическая энергия, преобразуемая оптико-электронными преобразователями (22) в электрическую энергию. 2. Устройство по п.1, отличающееся тем, что сигналы на выходе измерительных средств (5, 26; 12, 27) преобразуются в оптические сигналы для их использования. 3. Устройство по любому из п.1 или 2, отличающееся тем, что средства измерения установлены в изоляторе (25) линии (L) высокого напряжения крыши. 4. Устройство по п.2, отличающееся тем, что указанное устройство содержит оптико-электронный преобразователь (10) оптических сигналов на выходе средств измерения в электрические ...

Система электропитания нагрузки переменного тока

1481736 Automatic regulation of reactive current and voltage GENERAL ELECTRIC CO 8 Oct 1974 [12 Oct 1973] 43588/74 Headings G3R and G3X Reactive current compensating apparatus includes a fixed capacitor connected in parallel with a series combination of a fixed inductor and a gated A.C. switch. The firing angle of the switch is controlled to regulate the phase angle between the current and voltage of the supply. As shown, an electric arc furnace 20 is supplied from a generator 10 over a step-down transformer 14. Fixed capacitors 30-32 and timing inductors 33-35 are connected across the supply leads in parallel with inductors 40-42 and series controlled rectifiers 40b-42b. A firing angle control circuit 65 receives a control signal from a circuit 66 which adds together signals derived from a load current sensing circuit 61 representing reactive current, and a line current phase angle sensor 70. In both cases, a measured current value is combined with a voltage signal which is processed by transformer circuits (51, 60) Fig. 3 (not shown), so as to correct for the reactive effects of transformer 14. A feedback limiting circuit (90), Fig. 5 (not shown), is included, and the overall arrangement operates to maintain the phase angle close to zero. That part of the system including angle sensor 70 operates in a feed-forward manner, and compensates the furnace supply so that demand variations do not cause voltage disturbances on additional supply lines 25-27 connected to the generator 10. In addition to arc furnaces, the arrangement is suitable for supplying drag lines, rolling mill drives and high voltage transmission lines.

Vorrichtung zur galvanisch getrennten Messung der elektrischen Leistungsaufnahme eines Zweipols

Vorrichtung zur galvanisch getrennten Messung der elektrischen Leistungsaufnahme eines Zweipols (30) aus der Erfassung von Strom und Spannung in einem Stromkreis, mit in-plane empfindlichen XMR-Sensoren (11 bis 14, 21 bis 24), die zu zwei Wheatstone-Brücken (10, 20) verschaltet sind, dadurch gekennzeichnet, dass jede der Wheatstone-Brücken (10, 20) über einer U-förmig verlaufenden Leiterschleife (1) mit Hin- und Rückleitung angeordnet ist, wobei die Leiterschleife (1) so ausgelegt ist, dass sich bei Stromfluss des Primärstroms (IP) im Bereich der zwei Wheatstone-Brücken (10, 20) ein Gradienten-/Differenzfeld ergibt, zwei Flachspulen (15, 25) zur Spannungsmessung vorhanden sind, die im Bereich der zwei Wheatstone-Brücken (10, 20) und gegenläufig zueinander angeordnet sind, die Wheatstone-Brücken derart angeordnet sind, dass die zwei Wheatstone-Brücken durch das Gradienten-/Differenzfeld eine maximale Verstimmung erfahren.

REACTIVE CURRENT COMPENSATING APPARATUS

... 1481736 Automatic regulation of reactive current and voltage GENERAL ELECTRIC CO 8 Oct 1974 [12 Oct 1973] 43588/74 Headings G3R and G3X Reactive current compensating apparatus includes a fixed capacitor connected in parallel with a series combination of a fixed inductor and a gated A.C. switch. The firing angle of the switch is controlled to regulate the phase angle between the current and voltage of the supply. As shown, an electric arc furnace 20 is supplied from a generator 10 over a step-down transformer 14. Fixed capacitors 30-32 and timing inductors 33-35 are connected across the supply leads in parallel with inductors 40-42 and series controlled rectifiers 40b-42b. A firing angle control circuit 65 receives a control signal from a circuit 66 which adds together signals derived from a load current sensing circuit 61 representing reactive current, and a line current phase angle sensor 70. In both cases, a measured current value is combined with a voltage signal which is processed by ...

MESSWANDLER

METER CIRCUIT ARRANGEMENT FOR WATTHOUR METERS FOR THE DIRECT CONNECTION

Device for measuring current and voltage

Die Erfindung betrifft eine Vorrichtung zur Messung von Stromstärke und Spannung in einem Wechselstrom führenden elektrischen Leiter (1), umfassend einen induktiven Wechselstromsensor (2), welcher einen mit einer Messspule (3) versehenen oder einen aus einer Messspule (3) bestehenden Induktionsring (4) umfasst und einen Spannungssensor (5), welcher wenigstens ein kapazitives Element, insbesondere eine Kondensatoranordnung (6), und/oder wenigstens ein resistives Element, insbesondere eine Widerstandsanordnung (7), umfasst, wobei die Vorrichtung derart ausgeführt ist, dass der elektrische Leiter (1) durch einen inneren Umfangsbereich (8) des Induktionsrings (4) führbar ist, und wobei der Spannungssensor (5) zumindest teilweise, vorzugsweise gänzlich im inneren Umfangsbereich (8) des Induktionsrings (4) angeordnet ist. Ferner betrifft die Erfindung eine Anordnung einer erfindungsgemäßen Vorrichtung in einem elektrischen Leitungsnetz.

MEASURING INSTRUMENT IN HIGH-VOLTAGE EQUIPMENTS

COMBINED CURRENT AND TENSION MEASURING MECHANISM

EQUIPMENT FOR STRESS MEASUREMENT AT A CHANNEL.

PROCEDURE, SYSTEM AND DEVICE FOR THE TELEMETERING OF ELECTRICAL ACHIEVEMENT

MESSWANDLER

MESSSYSTEM ZUR FERNMESSUNG VON STROM UND SPANNUNG IN ELEKTROENERGIENETZEN

ABNORMALITY DIAGNOZING SYSTEM AND METHOD FOR A HIGH VOLTAGE POWER APPARATUS

Power measuring system, measuring apparatus, load terminal, and device control system

System of intelligent sensors in an electrical panelboard

According to one aspect, embodiments of the invention provide a system for monitoring a plurality of circuit branches, the system comprising a plurality of current sensors, each configured to be coupled to at least one of the plurality of circuit branches and to produce a signal having a level related to a current level of the one of the plurality of circuit branches, a communications bus, a plurality of sensor circuits, wherein each one of the plurality of sensor circuits is configured to convert the signal from the associated one of the plurality of current sensors to a digital measurement signal and provide the digital measurement signal to the communication bus, and a controller configured to receive the digital measurement signal from each sensor circuit over the communication bus and transmit data related to the digital measurement signal from each sensor circuit to an external client.

Three-phase electric energy measurement apparatus

A three-phase electric energy measurement apparatus includes a voltage detecting unit (I/V2), for detecting every phase voltage of which line it is located, a current detecting unit (I/V1), for detecting every phase current of which line it is located, an energy measuring and computing unit (M7), connected with the voltage detecting unit (I/V2) and current detecting unit (I/V1), for receiving the output signals from the current detecting unit (I/V1) and voltage detecting unit (I/V2), and carrying out signal process and operation, and then outputting the measuring and computing result. The voltage detecting unit (I/V2) and the energy measuring and computing unit (M7) are respectively connected in star mode, and form a common virtual ground.

A sensor system and method

Rf current sensor

Method and device for non-invasive root phenotyping

The present disclosure provides for an electronic sensor for detecting a root of a plant in soil, the electronic sensor that includes a first conductor plate configured to be disposed in soil, a switch, a power supply, and signal extractor. The switch is electrically coupled to the first conductor plate and is configured to switch between a first mode and a second mode. The power supply is electrically coupled to the switch and is configured to provide an electrical charge to the first conductor plate in the first mode of the switch. The signal extractor is electrically coupled to the switch and is configured to extract a signal response at the first conductor plate in the second mode of the switch. The present disclosure further provides a second conductor plate configured to be disposed in soil adjacent to and substantially parallel to the first conductor plate. The second conductor plate is electrically coupled to ground.

THREE-PHASE ELECTRIC ENERGY MEASUREMENT APPARATUS

A three-phase electric energy measurement apparatus includes a voltage detecting unit (I/V2), for detecting every phase voltage of which line it is located, a current detecting unit (I/V1), for detecting every phase current of which line it is located, an energy measuring and computing unit (M7), connected with the voltage detecting unit (I/V2) and current detecting unit (I/V1), for receiving the output signals from the current detecting unit (I/V1) and voltage detecting unit (I/V2), and carrying out signal process and operation, and then outputting the measuring and computing result. The voltage detecting unit (I/V2) and the energy measuring and computing unit (M7) are respectively connected in star mode, and form a common virtual ground.

MONITORING DEVICE FOR OVERHEAD POWER TRANSMISSION SYSTEM

In an overhead power transmission system, a sensing member for detecting the condition of overhead power transmission or distribution lines or the ground wire is secured to an anchor and clamp member for anchoring and clamping the power line or overhead ground wire so as to prevent undesired movement of the sensing member.

BODY CAPACITANCE ELECTRIC BODY CAPACITANCE ELECTRIC FIELD POWERED DEVICE FOR HGH VOLTAGE LINES

Devices that couple to high voltage transmission lines obtain power themselves using the body capacitance of an element of the devices. The devices generate a comparatively lower voltage from the current flowing between the high voltage line and the element of the device that generates the body capacitance. The devices can be used to operate sensors that monitor the transmission lines or parameters of the power distribution system, such as current, line temperature, vibration, and the like. The devices can also be used as indicators, such as aircraft warning lights, information signs, etc. In addition, the devices can operate as RF transmission/reception or repeater devices, radar devices, mesh networking nodes, video/audio surveillance, sound emitting devices for scaring animals, drones that traverse the power line, etc. Because the devices operate in response to line voltage rather than current, the devices are reliable even in low current conditions.

APPARATUS AND METHOD FOR THE MEASUREMENT AND MONITORING OF ELECTRICAL POWER GENERATION AND TRANSMISSION

An apparatus and method in accordance with the present invention allows for a determination of the amount and direction of electric power being produced by a particular high voltage electric power transmission line. The present invention consists of a monitoring device (10) consists of a weatherproof housing (12) containing the electric potential and magentic field measurement components and a second weatherproof housing (14) containing the necessary processing and communications somponents, including a power supply and data transmission equipment.

DEVICE FOR MEASURING ELECTRICAL ENERGY SUPPLIED TO A RAILWAY TRACTION APPARATUS

Dispositif de mesure de l'énergie électrique fournie à un engin de traction ferroviaire par une ligne de haute tension (1), comprenant des moyens de mesure (5, 26) de l'intensité du courant d'alimentation et des moyens de mesure (12, 27) de la tension de cette alimentation, ces moyens de mesure possédant une alimentation (23, 24) basse tension nécessaire à leur fonction- nement, caractérisé en ce que l'énergie d'alimentation basse tension est une énergie optique convertie (22) en énergie électrique.

A METHOD AND SYSTEM FOR DYNAMIC FAULT DETECTION IN AN ELECTRIC GRID

A system for detecting a fault in an electric grid, including a plurality of grid measuring devices distributed in the electric grid, being operative to measure current and/or voltage with their respective time of occurrence, enabling a user to define at least one fault type, and at least one rule for detecting the fault type, the rule associating the fault type with at least one of the measurements, executing the measurements, and analyzing the measurements according to the rule to detect a fault.

SENSORED ELECTRICAL JUMPER

A sensored electrical jumper comprises a conductor having a first end and a second end, the first end including a first connection interface and the second end including a second connection interface, a sensor section including at least one sensor disposed over the conductor between the first and second ends, the sensor section sensing at least one of current and voltage of the conductor, and a sensor output conduit extending from the sensor and oriented substantially perpendicular to the conductor axis to protect at least one sensor output wire from leakage current or other potential electrical damage.

Messwandler.

COMBINED STROMUND POTENTIAL TRANSFORMER AT AN COMPRESSED GAS-ISOLATED METAL-TOTALLY ENCLOSED HIGH-VOLTAGE EQUIPMENT.

CURRENT AND POTENTIAL TRANSFORMER FOR A METAL-TOTALLY ENCLOSED, GAS-ISOLATED HIGH-VOLTAGE EQUIPMENT.

Measurement converter for energy distribution mains

A signal processing electronic circuit (11) is connected at its input side to the voltage sensor (6) and to the current sensor. A microcomputer (12) is also included in the instrument converter and is connected to the output of the electronic circuit (11). The signal processing electronic circuit has outputs for standard analogue signals as well as outputs pref. with integrated ADC for the connection of the microcomputer. A temp. sensor (5) is also connected at the input side of the signal processing electronic circuit. A signal matching circuit (10) is provided between each of the sensors (4,5,6) and the signal processing electronic circuit.

Current - and voltage measuring unit.

Eine Messungseinheit (100) ist zur gleichzeitigen Messung von zwei Stromwerten und zwei Spannungswerten einer Leistungsleitung mit drei Hochspannungsleitern vorgesehen, wobei die Messungseinheit (100) drei zweipolige elektrische Verbindungen umfasst, wobei jede Verbindung so konfiguriert ist, dass sie zwischen zwei getrennten Enden eines Hochspannungsleiters verbunden werden kann; einen ersten Stromsensor und einen zweiten Stromsensor, die so konfiguriert und angeordnet sind, dass sie einen Strom durch die erste Verbindung (210) und durch die dritte Verbindung (230) messen; und einen ersten Spannungssensor und einen zweiten Spannungssensor (720), die so konfiguriert und angeordnet sind, dass sie eine Spannung zwischen der ersten Verbindung (210) und der zweiten Verbindung (220) und zwischen der zweiten Verbindung (220) und der dritten Verbindung (230) messen; die Messung der beiden Stromwerte und der beiden Spannungswerte bei einem schwebenden Potential. Diese Messungseinheit (100) kann ...

METHOD OF DETERMINING MUTUAL VOLTAGE SENSITIVITY COEFFICIENTS BETWEEN A PLURALITY OF MEASURING NODES OF AN ELECTRIC POWER NETWORK

Optical sensor assembly and method for measuring current in an electric power distribution system

The measuring transducer device

测量变换器装置具有电压传感器以及电流传感器。电压传感器配有用于检测电压的测量电极(1a，1b，1c)。电流传感器配有用于检测电流的探针(10a，10b，10c)。测量电极(1a，1b，1c)配有容纳部(9a，9b，9c)，电流传感器的探针(10a，10b，10c)定位在该容纳部中。

DEVICE FOR MONITORING AN ELECTRICAL CONDUCTOR AND AN ELECTRICAL FIXTURE COMPRISING SUCH A DEVICE

Le dispositif de contrôle est destiné à être disposé sur un conducteur (6) de ligne électrique. Il comporte un boîtier (2) de protection, un mécanisme (14) d'accrochage, un circuit électronique (3) de contrôle, et un capteur (4, 8) de mesure de tension comprenant une électrode (4) de mesure. Le dispositif de contrôle comporte également un dispositif de protection (20) entourant l'électrode (4) de mesure de tension et s'étendant à l'extérieur du boîtier (2) pour empêcher l'eau de pluie de recouvrir complètement l'électrode de mesure (4) de tension et/ou le boîtier (2) contenant la dite électrode. Ledit dispositif de protection (20) comprend un blindage (21) électrique pour stabiliser autour de l'électrode de mesure de tension les variations de champ électrique dues à des conditions extérieures. L'Installation électrique comporte au moins un conducteur (6) de ligne et au moins dispositif de contrôle (1) communiquant avec un dispositif de communication.

High speed control of reactive power for voltage stabilization in electric power systems

DEVICE MULTIFUNCTION TO PROTECT, MEASURE, COUNT, SUPERVISE the PHYSICAL PARAMETERS Of an INDUSTRIAL ELECTRICAL INSTALLATION

CURRENT SENSOR AND ELECTRICAL NETWORK COMPRISING SUCH A CURRENT SENSOR

Ce capteur de courant (2) comprend un tore de mesure (22), agencé dans un boîtier (20) disposé autour d'un conducteur électrique (12) apte à transmettre un courant électrique, et des moyens (24) de détection d'une tension dans le conducteur électrique. Les moyens de détection (24) sont configurés pour entourer le conducteur électrique (12) lorsque le capteur de courant (2) est installé.

DEFECT DETECTION DEVICE ON AN OVERHEAD ELECTRIC LINE HIGH VOLTAGE

APPARATUS FOR MEASURING ELECTRICAL ENERGY TRANSMITTED TO RAIL TRACTION UNIT BY HIGH VOLTAGE LINE, CAPABLE OF BEING MINIATURIZED TO BE RECEIVED IN AN INSULATOR FOR A HIGH VOLTAGE LOOP CABLE OF THE RAIL TRACTION UNIT

PURPOSE: An apparatus for measuring the electrical energy transmitted to a rail traction unit by a high voltage line is provided to achieve the high level electrical insulation between a high voltage step and a low voltage step of the measuring apparatus. CONSTITUTION: An apparatus for measuring the electrical energy transmitted to a rail traction unit by a high voltage line(1) includes a measuring device(5) for measuring extraction current, and a measuring device(12) for measuring the voltage of power. The measuring devices have low voltage powers(23,24) required for the operation thereof. The low voltage powers are obtained from optical energy converted into the electrical energy. Output signals from the measuring devices are converted into optical signals. The measuring devices are received in an insulator of a loop high voltage cable(L). © KIPO 2008 ...

TERMINAL CONNECTION DEVICE FOR A POWER CABLE

Anordning för automatisk kontroll av skarvar på ledningar för elektrisk högspänning

SENSOR, METHOD AND SYSTEM OF MONITORING TRANSMISSION LINES

An apparatus, method, and system for measuring the magnetic field produced by phase conductors in multi-phase power lines. The magnetic field measurements are used to determine the current load on the conductors. The magnetic fields are sensed by coils placed sufficiently proximate the lines to measure the voltage induced in the coils by the field without touching the lines. The x and y components of the magnetic fields are used to calculate the conductor sag, and then the sag data, along with the field strength data, can be used to calculate the current load on the line and the phase of the current. The sag calculations of this invention are independent of line voltage and line current measurements. The system applies a computerized fitter routine to measured and sampled voltages on the coils to accurately determine the values of parameters associated with the overhead phase conductors.

Apparatus and method for monitoring power and current flow

A method and system for remotely monitoring the magnitude and direction of net electrical power and current flow to or from a power generation facility over the transmission lines operably connected thereto allows for the estimation of the power output of that facility. The method includes detecting and measuring the magnetic field emanating from the monitored transmission line(s), and detecting a signal synchronized to the power system frequency, typically the electric field, emanating from the transmission lines. The method further includes evaluating, storing, and transmitting the data on the electromagnetic (EM) fields that are recorded.

Measuring circuit arrangement for electricity meters for direct connection

A measuring circuit arrangement ( 1 ) for an electricity meter for direct connection is respectively connected, to an input ( 3 ) for voltage measurement and an input ( 4 ) for current measurement of a measuring chip ( 2 ) for each phase of a three phase supply. Upstream of the input ( 3 ) for voltage measurement is a voltage divider (R 1, R 2 ) provided in order to match the voltage level, and upstream of the input ( 4 ) for current measurement is a voltage transformer ( 5 ) with measuring shunt (R_SH) installed according to the invention. The voltage transformer ( 5 ) is so arranged that its ohmic resistance towards the measuring shunt (R_SH) on the one hand sufficiently limits standard direct-current impingement of the voltage transformer ( 5 ) and on the other hand this ohmic resistance is also small enough so that, together with the inductance of the current transformer ( 5 ), it displays no more than standard angle error.

Sensor, Method and System of Monitoring Transmission Lines

An apparatus, method, and system for measuring the magnetic field produced by phase conductors in multi-phase power lines. The magnetic field measurements are used to determine the current load on the conductors. The magnetic fields are sensed by coils placed sufficiently proximate the lines to measure the voltage induced in the coils by the field without touching the lines. The x and y components of the magnetic fields are used to calculate the conductor sag, and then the sag data, along with the field strength data, can be used to calculate the current load on the line and the phase of the current. The sag calculations of this invention are independent of line voltage and line current measurements. The system applies a computerized fitter routine to measured and sampled voltages on the coils to accurately determine the values of parameters associated with the overhead phase conductors.

СПОСОБ И СИСТЕМА ДИНАМИЧЕСКОГО ОБНАРУЖЕНИЯ НЕИСПРАВНОСТЕЙ В ЭЛЕКТРИЧЕСКОЙ СЕТИ

Настоящее изобретение относится к системам для обнаружения неисправностей в электрических сетях. Техническим результатом является обеспечение возможности измерения различных электрических параметров и возможности определения неисправности на их основе. Группа изобретений представляет собой систему, содержащую множество измерительных устройств, распределенных в электрической сети и выполненных с возможностью измерения тока и/или напряжения с соответствующим временем их осуществления, позволяя пользователю задавать по меньшей мере один тип неисправности, и по меньшей мере одно правило для обнаружения типа неисправности, причем правило связывает тип неисправности с по меньшей мере одним из измерений, выполнять измерения и проводить анализ измерений в соответствии с указанным правилом для обнаружения неисправности. 4 н. и 58 з.п. ф-лы, 8 ил.

КОМБИНИРОВАННОЕ ЭЛЕКТРИЧЕСКОЕ ИЗМЕРИТЕЛЬНОЕ УСТРОЙСТВО

... 1. Комбинированное измерительное устройство (100) для измерения тока и/или напряжения электрического проводника, отличающееся тем, что содержит: ! опорное тело (101); ! датчик (5) тока, размещенный внутри тела (101); ! датчик напряжения, расположенный, по меньшей мере, частично внутри тела (101); ! защитный экран (11), расположенный вокруг датчика (5) тока, причем датчик (5) тока и датчик напряжения взаимно расположены так, что защитный экран (11) экранирует, по меньшей мере, частично датчик (5) тока и, по меньшей мере, часть датчика напряжения от внешних электрических помех. ! 2. Измерительное устройство (100) по п.1, отличающееся тем, что защитный экран (11) содержит, по меньшей мере, один слой проводящей или полупроводящей ленты, намотанной вокруг датчика (5) тока. ! 3. Измерительное устройство (100) по п.2, отличающееся тем, что датчик напряжения расположен, по меньшей мере, частично внутри датчика (5) тока. ! 4. Измерительное устройство (100) по п.2, отличающееся тем, что датчик (5 ...

КОМБИНИРОВАННОЕ ЭЛЕКТРИЧЕСКОЕ ИЗМЕНЯЕМОЕ УСТРОЙСТВО ДЕТЕКТИРОВАНИЯ

1. Комбинированное электрическое изменяемое устройство детектирования, содержащее множество модулей (1) измерения однофазного тока, размещенных в общем каркасе (2), имеющем отдельный выходной кабель/соединение (8) для каждого модуля (1), отличающееся тем, что по меньшей мере один модуль (1) измерения однофазного тока снабжен устройством детектирования напряжения, причем комбинированное электрическое изменяемое устройство детектирования использует один выходной кабель/соединение (7), сигнальные провода которого соединены с выходным кабелем/соединениями (8) от модулей (1).2. Комбинированное электрическое изменяемое устройство детектирования по п.1, отличающееся тем, что все модули (1) измерения однофазного тока снабжены катушками Роговского в качестве измерительных элементов.3. Комбинированное электрическое изменяемое устройство детектирования по п.1, отличающееся тем, что все модули (1) измерения однофазного тока снабжены устройством детектирования напряжения.4. Комбинированное электрическое изменяемое устройство детектирования по п.1, отличающееся тем, что оно содержит устройство детектирования (3) остаточного тока, окружающее более одного из модулей (1) измерения однофазного тока в общем каркасе (2).5. Комбинированное электрическое изменяемое устройство детектирования по п.1, отличающееся тем, что оно комбинирует три модуля (1) измерения фазного тока, каждый из которых снабжен соответствующим устройством детектирования фазного напряжения, причем все модули (1) измерения однофазного тока и устройства детектирования фазного напряжения размещены вместе с устройством детектирования (3) остаточного тока в общем карк РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2011 126 884 (13) A (51) МПК G01R 19/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2011126884/28, 29.06.2011 (71) Заявитель(и): АББ ТЕКНОЛОДЖИ АГ (CH) Приоритет(ы): (30) Конвенционный приоритет: 30.06.2010 EP 10006744.6 R U (57) Формула изобретения 1. ...

СИСТЕМА ИЗМЕРИТЕЛЬНОГО ПРЕОБРАЗОВАТЕЛЯ

1. Система измерительного преобразователя, имеющая сенсор напряжения и сенсор тока, при этом сенсор напряжения имеет измерительный электрод (1a, 1b, 1c) для регистрации электрического напряжения,отличающаяся тем, что измерительный электрод (1a, 1b, 1c) имеет гнездо (9a, 9b, 9c), в котором размещен зонд (10a, 10b, 10c) сенсора тока.2. Система измерительного преобразователя по п. 1,отличающаяся тем, что зонд (10a, 10b, 10c) по меньшей мере частично диэлектрически экранирован измерительным электродом (1a, 1b, 1c).3. Система измерительного преобразователя по п. 1 или 2,отличающаяся тем, что гнездо (9a, 9b, 9c) выполнено в виде выемки (9a, 9b, 9c) в измерительном электроде (1a, 1b, 1c).4. Система измерительного преобразователя по п. 3,отличающаяся тем, что измерительный электрод (1a, 1b, 1c) выполнен кольцеобразно, а гнездо (9a, 9b, 9c) расположено на наружной боковой поверхности на измерительном электроде (1a, 1b, 1c).5. Система измерительного преобразователя по п. 4,отличающаяся тем, что выемка (9a, 9b, 9c) имеет, в частности, замкнутый окружной желобок.6. Система измерительного преобразователя по п. 5,отличающаяся тем, что кольцеобразный измерительный электрод (1a, 1b, 1c) имеет по существу U-образное профилирование.7. Система измерительного преобразователя по п. 1 или 2,отличающаяся тем, что измерительный электрод (1a, 1b, 1c) и зонд (10a, 10b, 10c) заделаны в изолятор (12, 12a).8. Система измерительного преобразователя по п. 4,отличающаяся тем, что на кольцеобразном измерительном электроде (1a, 1b, 1c) расположена по существу радиально направленная присоединительная шина (6a, 6b, 6c).9. Система измерительного преобразователя по п. 8,отличающаяся тем, что присоединительная шина (6a, 6b, 6c) направлена на расположенную в изоляторе (12, 12a) полость (11).10. Система измерительного преобразователя по п. 9,отличающаяся тем, что полость (11) охвачена арматурой (7a, 7b, 7c).11. Система и РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК G01R 15/14 (13) 2014 141 672 A (2006.01) ...

Кабель для силовой электросети, снабженный датчиком

1. Снабженный датчиком кабель для распределения электроэнергии в силовой электросети, содержащий внутренний проводник и изолирующий слой, концентрически расположенный вокруг по меньшей мере одной из осевых секций внутреннего проводника, при этом снабженный датчиком кабель дополнительно содержит емкостный датчик напряжения, выполненный с возможностью измерения напряжения внутреннего проводника, при этомупомянутый датчик содержит печатную плату, при этом указанная печатная плата 60 расположена поверх электрически изолированной детали из проводящего или полупроводникового материала,при этом упомянутая деталь из проводящего или полупроводникового материала расположена на изолирующем слое кабеля и образует электрод измерительного конденсатора емкостного датчика напряжения.2. Снабженный датчиком кабель по п. 1, отличающийся тем, что печатная плата находится в электрическом контакте с электрически изолированной деталью из проводящего или полупроводникового материала.3. Снабженный датчиком кабель по одному из пп. 1 или 2, отличающийся тем, что печатная плата содержит двустороннюю печатную плату.4. Снабженный датчиком кабель по п. 1, отличающийся тем, что печатная плата содержит открытую проводящую область, обеспечивающую протяженную двумерную зону поверхностного контакта, при этом указанная открытая проводящая область находится в механическом и электрическом контакте с электрически изолированной деталью из проводящего или полупроводникового материала в двух измерениях и над протяженной областью.5. Снабженный датчиком кабель по п. 4, отличающийся тем, что открытая проводящая область содержит позолоченный медный с РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК G01R 15/06 (13) 2014 125 150 A (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2014125150, 19.12.2012 (71) Заявитель(и): ЗМ ИННОВЕЙТИВ ПРОПЕРТИЗ КОМПАНИ (US) Приоритет(ы): (30) Конвенционный приоритет: (43) Дата публикации заявки: 10.02.2016 Бюл. № 04 (85) Дата ...

Abnormitäts-Diagnosesystem für eine Hochspannungsanlage.

ÜBERWACHUNG VON TEILENTLADUNGEN IN LEISTUNGSTRANSFORMATOREN

Sensor for measuring current in a conductor

Sensor 1 for measuring current in a conductor 19, comprising a coil 4 on a substrate (2) comprising metallization layers with isolation (3) between, which may be a printed circuit board (PCB). The coil has at least one turn, winding around a coil axis 10 parallel to the first layer, around non-magnetic material. Each turn comprises a track 5 in the first layer connected by a via 6 to a track (7) in the second. The substrate also comprises means 11 to measure the current in the coil and may include a wireless transmitter 18. There may be an additional coil 34 connected in series with the first and also a capacitor for measuring voltage, formed from areas 12 in the conducting layers sandwiching the substrate. There may also be an inductive power pick-up coil, comprising another pattern 21 in the conductive layers, its winding axis 22 perpendicular to the first layer.

HIGH-VOLTAGE MONITORING ARRANGEMENTS

... 1471570 Measuring voltage and current SIEMENS AG 18 Dec 1974 [20 Dec 1973] 54803/74 Heading G1U The potential of a conductor 3 within a resin bush 1 is measured by embedding a metal cylinder 4 in the bush concentrically with the conductor 3, so that the conductor and the cylinder form a capacitor, by connecting the capacitor so formed to a second capacitor 5 to form a capacitor divider, and by indicating 11 the resulting voltage across the second capacitor 5. The current in the conductor 3 is also measured using a coreless transformer 18 as described in Specification 1471569.

Electrical sensor

Cyber synchronous machine(cybersync machine)

INSULATOR FOR CURRENT FEED

EQUIPMENT FOR THE MONITORING OF PARTIAL UNLOADINGS IN EQUIPMENT WITH ELECTRICAL HIGH VOLTAGE OR IN A HIGH-VOLTAGE EQUIPMENT

MESSSYSTEM ZUR FERNMESSUNG VON STROM UND SPANNUNG IN ELEKTROENERGIENETZEN

ELECTRONIC INSTRUMENT TRANSFORMER TO COMBINED CURRENT AND STRESS MEASUREMENTS.

OPTICAL PROCEDURE AND OPTICAL MECHANISM FOR THE MONITORING OF AN ELECTRICAL CONDUCTOR

KOMBINIERTE STROM- UND SPANNUNGSMESS- EINRICHTUNG

KOMBINIERTE STROM- UND SPANNUNGSMESSEINRICHTUNG

MESSWANDLER ZUM EINBAU IN EINE METALLKAPSEL EINER SCHALTANLAGE

MESSEINRICHTUNG IN HOCHSPANNUNGSANLAGEN

DEVICE FOR THE MEASUREMENT OF A QUANTITY OF ELECTRICITY FOR CURRENT TRANSPORTATION LINES

VORRICHTUNG ZUM ANZEIGEN EINER ANLIEGENDEN SPANNUNG, VORZUGSWEISE STROMWANDLER

The arrangement contains a primary conductor (2), pref. in the form of a rod, rail, collecting bar or similar, a secondary coil (6) with one or more iron cores (5), a capacitive divider (7) and an insulating housing (1). A discharge lamp (13) for visual indication of the applied voltage is connected to the capacitive divider via an electronic circuit (11) and mounted in an aperture in the housing. The lamp is coupled to a light conductor (22) leading to a separate indicator element (25). USE/ADVANTAGE - The arrangement enables safe indication of voltage over large distances irrespective of the type of measurement or current converter.

DEVICE AND PROCEDURE FOR THE PRECISION INCREASE WITH INSTRUMENT TRANSFORMERS

SYSTEM AND DEVICE FOR THE MONITORING AND REGULATION OF AN EXTENSIVE CURRENT SUPPLY SYSTEM.

EQUIPMENT FOR THE TRANSMISSION OF DATA OF SEVERAL SIGNAL SOURCES ON ONLY ONE CHANNEL.

COMBINED CURRENT AND TENSION MEASURING INSTRUMENT

INSTRUMENT TRANSFORMER

DEVICE FOR TELEMONITORING THE STATE OF AERIAL POWER LINES (VARIANTS)

A device for monitoring partial discharges in an electric high-voltage apparatus or high-voltage equipment

Integrated electrical system

Current sensor and electric network comprising such a current sensor

Current sensor and electric network comprising such a current sensor 5 A current sensor (2) comprising a measurement torus (22), arranged in a casing (20) positioned around an electric conductor (12) able to transmit an electric current, and means (24) for detecting a voltage in the electric conductor. The detection means (24) are configured for surrounding the electric conductor (12) when the current sensor (2) is installed. Figure 3 30- Fig.5 - --- ~ ----_ _ _ _------ 12 +--30 -- ---- - - - - - - - - - - - - - ---- --- --------------- r---------12 24----- p---- 1 3234| 3 3 2 3T3 34 d 34 + 34 + 8 28 28 Fig. 6 ...

ELECTRIC POWER MONITORING AND RESPONSE SYSTEM

ARRANGEMENT FOR SUPPLYING ELECTRICAL ENERGY TO A MEASURING INSTRUMENT

POWER LINE MAINTENANCE MONITORING

Maintenance monitoring may be provided. First, a plurality of status data respectively corresponding to a plurality of components on a power line may be collected. Then the collected plurality of status data may be analyzed to determine when a one of the collected plurality of status data is outside of a normal operation range for a one of the plurality of components corresponding to the one of the collected plurality of status data. Next, results of the collected data analysis may be displayed. The results may indicate that the one of the collected plurality of status data is outside of the normal operation range for the one of the plurality of components corresponding to the one of the collected plurality of status data.

ELECTRIC EQUIPMENT ARRANGED ON THE ROOF OF AN ELECTRIC TRACTION RAILWAY VEHICLE

Equipement électrique EE disposé en toiture d' un véhicule ferroviaire à traction électrique, ledit véhicule étant équipé d'au moins un pantographe ( 2) et d'une ligne de toiture L véhiculant le courant capté depuis une ligne caténaire (1 ), à partir de la connexion audit pantographe (2), vers des dis positifs électriques de traction (4) du véhicule, ledit équipement électriqu e EE comprenant un appareil de disjonction (3), pour protéger lesdits dispos itifs électriques de traction et étant disposé sur un support mécanique (40) , caractérisé en ce que ledit équipement électrique EE comprend un dispositi f de mesure DM comprenant au moins des moyens de mesure de l'intensité (33) du courant transmis depuis la caténaire (1) vers la ligne L de toiture dispo sés sur ledit support mécanique (40) et en ce que ledit équipement électriqu e EE comprend un calculateur (D) qui commande l'activation dudit appareil de disjonction (3).

OPTICAL SENSOR ASSEMBLY AND METHOD FOR MEASURING CURRENT IN AN ELECTRIC POWER DISTRIBUTION SYSTEM

An optical sensor assembly (10) has a base unit (20), an optical current sensor (40), and a magnetic concentrator (54). The optical current sensor (40) is mounted on the base unit (20) and includes a polarized light input (42), a reflective prism (44), and a light output (46). The magnetic concentrator (54) defines an airgap (60) and is mounted on a concentrator housing (30) such that the magnetic concentrator (54) fits around the current carrying cable (12) when the base unit (20) is hung from the current carrying cable (12) in a closed position. The reflective prism (44) is operably positioned in the airgap (60) when the concentrator housing (30) is in the closed position. The optical sensor assembly (10) enables a method of measuring a current through the current carrying cable (12).

HOT STICK POWER ANALYZER

A hot stick power analyzer includes a housing mounted on a pole and a channel for a power line. A ground line extends from the housing and there is a power line conductive contact. A voltage sensor includes voltage sensing circuitry connected to the power line conductive contact and the ground line. There is a high voltage capacitance between the ground line and the voltage sensing circuitry. A current sensor includes windings about and spaced from the power line. A processing subsystem is responsive to the voltage sensing circuitry and to the current sensor and is configured to compute power analysis metrics.

ABNORMALITY DIAGNOSING SYSTEM AND METHOD FOR HIGH VOLTAGE POWER APPARATUS

Device for measuring the electrical energy provided through high voltage wire to a railway traction engine

Apparatus for measuring the electrical energy supplied to a rail traction unit by a high voltage line ( 1 ), the apparatus comprising measurement means ( 5, 26 ) for measuring the current drawn, and measurement means ( 12, 27 ) for measuring the voltage of the power supply, said measurement means themselves possessing a low voltage power supply ( 23, 24 ) necessary to enable them to operate, the apparatus being characterized in that the low voltage electrical power supply is taken from light energy converted ( 22 ) into electrical energy.

DEVICE FOR MEASURING AT LEAST ONE ELECTRICAL VARIABLE OF A CURRENT FLOWING IN AN ELECTRICAL APPLIANCE

Dispositif de mesure d'au moins une grandeur électrique d'un courant circulant dans un appareil électrique (2), comprenant un module principal (20) destiné à être monté sur l'appareil électrique (2), le module principal (20) comprenant : - au moins un orifice traversant (22 à 24) destiné à être traversé par au moins un conducteur (8 à 10, 13 à 15) relié électriquement à au moins une borne de l'appareil électrique (2), ledit orifice traversant (22 à 24) comprenant des moyens de connexion (27 à 29) configurés pour être reliés électriquement à ladite borne, caractérisé en ce que le module principal (20) comporte en outre : - deux connexions principales (30, 31) reliées électriquement entre elles et situées respectivement sur deux faces latérales (32, 33) du module principal (20) orientées sensiblement perpendiculairement aux première et deuxième faces (25, 26).

Electrical quantity e.g. current, measuring device for electric cable, has capacitor bushing and coil assembled in axial manner and merged until forming unique body in insulating material matrix delimiting hole for introducing cable

Dispositif (1) de mesure de grandeurs électriques pour lignes de transport d'énergie, opérationnellement associable au câble d'une ligne électrique ou d'un de ses appareils, constitué d'un dispositif pour détecter un signal de tension muni d'un condensateur de traversée (TV) ayant la forme d'un collier métallique (2), aménagé coaxialement par rapport audit câble, pouvant être branché à un diviseur capacitif, et d'un dispositif pour détecter un signal de courant muni d'au moins un capteur de courant obtenu au moyen d'une bobine (TA) susceptible d'être parcourue de courant suite à un effet inductif. La bobine (TA) est obtenue sur au moins un circuit imprimé muni d'une ouverture centrale (13), et formée de dépôts radiaux prévus sur les deux faces du circuit imprimé ainsi que de raccordements électriques aménagés entre les dépôts des deux faces. Une couche de matériau isolant (5) revêtant au moins partiellement le circuit imprimé et un écran métallique (6) en guise de revêtement au moins partiel ...

CURRENT SENSOR AND ELECTRICAL NETWORK COMPRISING SUCH A CURRENT SENSOR

Multi-functional device for measuring electrical parameters of industrial circuit

La présente invention concerne un dispositif multifonctions pour contrôler, mesurer, compter, surveiller les paramètres physiques d'une installation électrique industrielle à basse tension en régime alternatif notamment les tensions et les intensités par phase permettant de déduire les puissances actives, apparentes, réactives, le facteur de puissance, le déphasage, la fréquence. Le dispositif multifonctions (1) est caractérisé en ce qu'il comprend au moins un boîtier (2) autonome monté de façon permanente dans une installation, comportant des moyens de raccordement (3) aux conducteurs électriques de cette installation, au moins une unité de mesure de l'intensité (10) du courant de ladite installation, au moins une unité de mesure de la tension (30) du réseau électrique et des moyens de protection (11, 12, 15) contre notamment les surintensités, les courants de fuite et les défauts d'isolement agencés pour commander un organe de coupure dudit réseau. Le boîtier (2) est agencé pour être ...

High speed control of reactive power for voltage stabilization in electric power systems

Voltage Conversion and/or Electrical Measurements from 400 Volts Upwards

A voltage-converter and a signal processing circuit are disclosed. A voltmeter, a power meter and a three-phase meter each including the voltage-converter and the signal processing circuit are disclosed. Methods of making the voltage-converters, voltmeters, three phase meters and power meters, as well as operating and/or using these apparatus are disclosed. Apparatus including feedback paths with at least one voltage-converters, voltmeters, three-phase meters and/or power meters are disclosed.

Inductive monitoring of a power transmission line of an electrical network

A method includes inductively coupling an electrical sensor to a transmission line associated with a node of an electrical network, and capturing power transmission information associated with the node through the electrical sensor. The method also includes communicating, through an electrical sensing device including the electrical sensor, information associated with a location of a power outage and/or a sub-optimal performance in the node to a processing node and/or a central control node associated with the electrical network.

A system and method for measuring phase attributes of electrical grid system and equipment using a smart probe

A system for measuring phase attributes of high voltage electrical lines comprises a single high voltage probe. The probe comprises a sensing element for selectively measuring voltage of a high voltage electrical line. A processing circuit detects zero crossings of the measured voltage, applies a time tag to the zero crossings, and stores samples of the amplitude and time tagged zero crossings. A memory stores samples of the amplitude and time tagged zero crossings for a plurality of high voltage electrical lines. A processor is operatively associated with the memory for determining phase relationships between the plurality of high voltage electrical lines.

Current detection printed board, voltage detection printed board, current/voltage detection printed board, current/voltage detector, current detector and voltage detector

A current and voltage detection printed board includes a board formed with a penetration hole; a first pattern wire formed at a periphery of the penetration hole; a second pattern wire formed at the periphery of the penetration hole; a plurality of first through holes that penetrate the board between the first and second pattern wires; a third pattern wire formed at the periphery of the penetration hole; a fourth pattern wire formed at the periphery of the penetration hole; and a plurality of second through holes that penetrate the board between the third and fourth pattern wires.

Vacuum forming method

Mainly, local wall thinning is prevented. The invention relates to a vacuum forming method for fabricating a resin-molded article. The vacuum forming method includes pressing a thermoplastic resin sheet 201 softened by heating into a vacuum forming mold 202 using a core mold 203 to stretch and deform thermoplastic resin sheet 201 at the same time, and bringing the thermoplastic resin sheet 201 into intimate contact with the vacuum forming mold 202 by vacuum suction to shape the thermoplastic resin sheet 201 . In the process of closing the vacuum forming mold 202 and the core mold 203 , at least part of the thermoplastic resin sheet 201 is preshaped using air pressure in such a way that the at least part of the thermoplastic resin sheet 201 is locally stretched and deformed at the same time and thus brought into intimate contact with the core mold 203 . Then, the thermoplastic resin sheet 201 is final-shaped by closing the vacuum forming mold 202 and the core mold 203 and performing vacuum suction through the vacuum forming mold 202.

METHOD OF DETERMINING MUTUAL VOLTAGE SENSITIVITY COEFFICIENTS BETWEEN A PLURALITY OF MEASURING NODES OF AN ELECTRIC POWER NETWORK

The method for determining mutual voltage sensitivity coefficients between a plurality of measuring nodes of an electric power network does not rely on knowledge of the network parameters (for example: series conductance and susceptance of the branches, shunt conductance and susceptance of the nodes, etc.). The method uses a monitoring infrastructure including metering units at each one of the measuring nodes, and includes a step of measuring at the same time, at each one of the measuring nodes, repeatedly over a time window, sets of data including values of the current, the voltage, and the phase difference, a step of computing active power, reactive power and values from each set of measured data, and a step of performing multiple parametric regression analysis of the variations of the voltage at each one of the measuring nodes. 11717. A method for determining mutual voltage sensitivity coefficients between a plurality of measuring nodes (M , . . . , M) of an electric power network () , the electric power network being provided with a monitoring infrastructure comprising metering units at each one of said measuring nodes , for measuring a voltage , a current and a phase difference between the voltage and the current , locally , the monitoring infrastructure comprising a processing unit () connected to a communication network , the metering units being connected to the communication network so as to allow for data transmission to and from the processing unit; the method comprising the steps of:{'b': 1', '7, 'sub': 1', 'm, 'I. measure at the same time, at each one of said measuring nodes (M, . . . , M), repeatedly over a time window (τ), sets of data comprising values of the current (Ĩ(t)), the voltage ({tilde over (V)}(t), and the phase difference (φ(t)), timestamp (t ϵ{t, . . . , t}) the sets of measured data, and compute a timestamped active power value ({tilde over (P)}(t)) and a timestamped reactive power value ({tilde over (Q)}(t)) from each set of measured ...

MOUNTING SYSTEM FOR SENSORS ON ELECTRICAL POWER LINES

A system for monitoring current and voltage from a power source or load at the tap wire connected to an overhead distribution power line, the distribution power line being spaced apart from the ground is provided. The system includes a current clamp sensor coupled to the tap wire and spaced apart from the distribution power line. A sensor is insulated body coupled to the current clamp, the sensor body being configured to simultaneously measure voltage on the overhead distribution power line and current of the tap wire prior to the distribution power line. A mounting assembly is provided that suspends the sensor from the distribution power line, the mounting assembly being coupled between the distribution power line and the current clamp. 1. A system for monitoring current and voltage from a power source , the system comprising:a power source configured to generate electrical power;a first power line electrically coupled to the power source at a first end, the first power line having a first portion disposed underground and a second portion;a primary electrical distribution system spaced apart from the ground, the primary electrical distribution system having a second power line, wherein the second portion is electrically coupled to the second power line;a sensor electrically coupled to the second power line, operably coupled to the second portion, and configured to simultaneously measure voltage and current of the second portion; and a first hot line clamp configured to couple with the second portion;', 'a first spacer member having a length coupled to the first hot line clamp;', 'a plate coupled to between the sensor and the first spacer member; and', 'a current clamp coupled to the plate and operably coupled between the sensor and the second portion., 'a mounting system that suspends the sensor from the second power line, the mounting system comprising2. The system of claim 1 , further comprising a tap wire having a first end and a second end claim 1 , the first ...

Electrical Sensor

Power distribution networks increasingly need to monitor the electrical power at points distributed around the network in order to cope with feed-in tariffs, etc. A unit which senses the electrical characteristics of the network can also be used to sense other environmental characteristics of the electrical network at that location. We describe an electrical sensor unit ( 50 ) attachable to an insulated electrical distribution cable ( 88 ) and comprising at least one electrical sensor for at least one of current, voltage, and phase angle of electrical power being transmitted in the cable ( 88 ), a source of electrical power for driving the electrical sensors, and a socket for receiving an environmental sensor and comprising connections for the source of electrical power. This means that the unit can be deployed as a standard item at a cost comparable with a simple electrical sensor, and then if and when environmental sensing is desired at the location in question, then an environmental sensor can be added via the socket in order to upgrade that particular location. It is convenient for the unit to comprise an annular body defining an axial passage through which an electrical conductor ( 90 ) can pass, the annular body housing an electrical sensor in the form of a current sensor including a loop extending around the axial passage. This provides a convenient form for the unit which allows it to be fitted in place over an existing cable ( 88 ) without severing the cable. The environmental sensor can sense at least one of temperature, partial discharge, humidity, atmospheric pressure. Thus, the socket can be fitted a sensor apt to detect any or some of these, or a battery, or a blanking plug ( 80 ), for example if neither a battery nor a sensor is needed at that time.

Device And Method For Detecting High-Voltage Power Distribution Line Path Having Improved Stability

In an exemplary embodiment of the present disclosure for solving the problem, disclosed is a stability-improved high voltage power line path exploration apparatus. The stability-improved high voltage power line path exploration apparatus for tracking a high voltage power line and determining a buried path and a connection configuration up to a final power source of a power distribution system, wherein the high voltage power line is connected to a primary winding of a distribution transformer to supply voltage and current, wherein the distribution transformer converts high voltage for distribution to low voltage in proportion to a ratio of a winding combination may include: an exploration current generator for generating a current pulse signal in inverse proportion to a winding ratio for detecting a magnetic field signal around the high voltage power line, in which the exploration current generator is connected to a secondary winding of the distribution transformer; a buried path probe for tracking the buried path and connection configuration of the high voltage power line by detecting the magnetic field signal which is generated around the high voltage power line when the current pulse signal flows through the high voltage power line; and a reverse current limiter for suppressing a generation of a reverse magnetic field generated by an external conductor of the high voltage power line, to improve a reception performance of the buried path probe.

MEDIUM-VOLTAGE OR HIGH-VOLTAGE COUPLING

The invention relates to a coupling for electrically and mechanically connecting medium-voltage or high-voltage components, in particular for voltages of 1 kV to 52 kV, comprising 115-. (canceled)16. A coupling for electrically and mechanically connecting medium-voltage or high-voltage components comprisinga first connecting piece for mechanically and electrically connecting a medium-voltage or high-voltage component,a second connecting piece for mechanically and electrically connecting another medium-voltage or high-voltage component,wherein the two connecting pieces of the coupling belong to complementary connection types, which fit together mechanically, andfurther comprising a low-resistance current sensing resistor, which is built into the coupling and electrically connected between the first connecting piece and the second connecting piece in order to measure a current flow between the first connecting piece and the second connecting piece.17. The coupling according to claim 16 , whereinthe first connecting piece is adapted for mechanically and electrically connecting to a complementary connecting piece of a bushing of a switchgear cabinet, andthe second connecting piece is adapted for mechanically and electrically connecting to a complementary connecting piece of an electrical cable.18. The coupling as claimed in claim 16 , further comprising a measuring device built into the coupling for the purpose of measuring the voltage across the current sensing resistor.19. The coupling according to claim 18 , wherein the measuring device is adapted for measuring the voltage at the current sensing resistor with respect to a ground potential.20. The coupling as claimed in claim 17 , wherein the measuring device measures at least one of the voltage across the current sensing resistor and the voltage at the current sensing resistor at a defined sampling rate claim 17 , and the sampling rate equals at least 100 Hz in order to be able to measure also harmonic components of ...

DYNAMIC REAL TIME TRANSMISSION LINE MONITOR AND METHOD OF MONITORING A TRANSMISSION LINE USING THE SAME

A dynamic real time transmission line monitor, a dynamic real time transmission line monitoring system, and a method of dynamic real time transmission line monitoring. A dynamic real time transmission line monitor includes a housing installable on a transmission line, the housing including a base portion, and a cover portion coupled to the base portion and defining a cavity of the housing together with the base portion; a sensor configured to sense in real time at least one of a temperature, a position, a current, an acceleration, a vibration, a tilt, a roll, or a distance to a nearest object; and an antenna in the cavity of the housing and configured to transmit a signal including information sensed by the sensor away from the monitor in real time. 1. A dynamic real time transmission line monitor comprising: a base portion; and', 'a cover portion made from a semiconductive material and coupled to the base portion and defining a cavity of the housing together with the base portion, at least one of the cover portion or the base portion being movable relative to the other between an open position of the housing in which a length of the transmission line is receivable in the cavity, and a closed position of the housing in which the length of the transmission line is retained in the cavity;, 'a housing installable on a transmission line, the housing comprisinga sensor supported by the housing and configured to sense in real time at least one of a temperature, a position, a current, an acceleration, a vibration, a tilt, a roll, or a distance to a nearest object; andan antenna in the cavity of the housing, the antenna configured to transmit a signal including information sensed by the sensor away from the monitor in real time.2. The dynamic real time transmission line monitor of claim 1 , further comprising a first alignment portion claim 1 , and a second alignment portion corresponding to the first alignment portion and configured to engage the first alignment portion ...

SENSOR, SENSOR SIGNAL PROCESSOR, AND POWER LINE SIGNAL ENCODER

Provided is a sensor in which a current sensor that detects a current of a power line as a change in a magnetic field and a voltage sensor that detects a voltage of the power line using capacitive coupling are integrally formed. The transmission of signals related to substantially the same sections is omitted in order to effectively compress an output signal from the sensor and an output signal from the voltage sensor. When the amplitude and phase of a fundamental wave which are estimated from the output signal from the sensor and the amplitude and phase of harmonics are encoded, the amplitude and phase of the harmonics are relativized with a value for the fundamental wave. 1. A power line signal encoder comprising:an estimation unit that estimates an amplitude and phase for each of a fundamental wave and a harmonic with a voltage waveform in a predetermined section;a relativization unit that relativizes information on the amplitude and phase of the harmonic of the voltage waveform based on information on the amplitude and phase of the fundamental wave of the voltage waveform; anda quantization unit that quantizes the information on the amplitude and phase of the fundamental wave of the voltage waveform and the relativized information on the amplitude and phase of the harmonic of the voltage waveform by the relativization unit with a predetermined amount of bits, whereinthe estimation unit estimates an amplitude and phase for a fundamental wave and harmonic with a current waveform in the predetermined section,the relativization unit relativizes information on the amplitude and phase of the harmonic of the current waveform based on information on the amplitude and phase of the fundamental wave of the current waveform, andthe quantization unit quantizes the information on the amplitude and phase of the fundamental wave of the current waveform, and the information of the relativized amplitude and phase of the harmonic of the current waveform by the relativization unit. ...

ELECTRICAL SAFETY CONTROL DEVICE

In order to heighten the level of electrical safety in residential, commercial and industrial networks, stay alert electronic control equipment are needed to detect and report the more common failures in the function of the electric circuitry: high and low line voltage, inversion of the phase sequence in three-phase networks, abnormal current flow between neutral and the ground conductor, and unplanned neutral interruption. When such failures suddenly come about, its effects can provoke harsh damages to users. 1. An electrical safety device for Wye three phase systems , which continuously measure the powerline phase voltages , the phase sequence condition , and ground current in order to protect against neutral conductor interruption , high or low voltage failures , phase sequence mistakes and ground.2. An electrical safety control device of claim 1 , wherein an very unbalanced input impedance wye delta rectifier a voltage regulator and neutral conductor interruption sensor that works as follows when wye system claim 1 , LLLN claim 1 , with its rightly bonded neutral conductor; in this case claim 1 , the unbalanced phase voltage is zero and the voltage measured between the common conductor of the network and each line is the same. When the neutral is suddenly interrupted claim 1 , the phase voltage becomes abnormally high in a particular line whereas at the same time claim 1 , in other line the voltage results abnormally low. This facts mean that the voltage measured between a line and the its neutral is too high and claim 1 , simultaneously claim 1 , the voltage measured between another line and its neutral is too low. This sensor also is applicable in any kind of two phase system.3. An electrical safety control device of claim 2 , where in a three phase neutral sensor based on three very different input impedances connected claim 2 , through voltage dividers and rectifiers claim 2 , to three analog to digital converters to measure continuously the phase voltage of ...

Hot stick power analyzer

A hot stick power analyzer includes a housing mounted on a pole and a channel for a power line. A ground line extends from the housing and there is a power line conductive contact. A voltage sensor includes voltage sensing circuitry connected to the power line conductive contact and the ground line. There is a high voltage capacitance between the ground line and the voltage sensing circuitry. A current sensor includes windings about and spaced from the power line. A processing subsystem is responsive to the voltage sensing circuitry and to the current sensor and is configured to compute power analysis metrics.

Combined In-Line DC and AC Current Sensor for High Voltage Electric Power Lines

The present invention may be embodied in an in-line high voltage electric power line monitor including a DC current sensor, an AC current sensor, an energy harvesting power supply, and a communication device. The in-line power line monitor includes a bus bar that connects in series with the monitored power line. For example, the in-line power line monitor may be connected at the junction point between the monitored power line and a support structure, such a sectionalizing switch that supports the monitor positioned between the switch and the power line. A pair of DC current measurement pickups are spaced apart on the bus bar and operatively connected to the microprocessor. The in-line power line monitor also includes an AC current sensor coil and an energy harvesting device (e.g., inductive coil) that surround the bus bar. The AC current sensor coil and the power supply coil are positioned adjacent to, but spaced apart from, the bus bar. An electronics board pair carries a pair of foil patch antenna elements positioned adjacent to the outer perimeter of the electronics board. Although the in-line power line monitor does not require a separate power supply, the electronics board may carry a backup battery if desired. 1. An in-line combined DC and AC current sensor for an electric power line , comprising:a bus bar configured to be connected in-line with an electric power line conductor;an electronics board positioned transverse to the bus bar with the bus bar extending through the electronics board, electronic components carried the electronics board comprising a microprocessor, a memory and a radio, operatively connected to the microprocessor;a pair of DC current measurement pickups spaced apart on the bus bar and operatively connected to the microprocessor;a power supply coil operatively connected to the microprocessor and positioned transverse to the bus bar with the bus bar extending through the power supply coil, the power supply coil configured to harvest ...

ELECTRO-OPTIC CURRENT SENSOR WITH HIGH DYNAMIC RANGE AND ACCURACY

An optical sensor assembly that senses current in a secondary electrical cable while sensing voltage in a primary electrical cable. The optical sensor assembly may include a sensor body, a concentrator core for measuring current. The concentrator core may be attached to a first end of the sensor body. The optical sensor assembly may include a plurality of extension arms that extend from the sensor body. The extension arms may include clamping devices on one end that are configured to attach to a first electrical cable. The concentrator core may be configured to at least partially surround a second electrical cable and sense the current from that second electrical cable. 1. An optical sensor assembly for measuring electrical current in a current carrying cable , comprising:a sensor body having a first end and a second end;a concentrator core for measuring current, the concentrator core attached to the first end of the sensor body;a plurality of extension arms extending from the first end of the sensor body;a plurality of clamping devices, each of the plurality of clamping devices configured to attach to a top end of one of the plurality of extension arms; andat least one alignment loop attached to each of the plurality of extension arms;wherein the clamping devices are configured to engage with a first electrical cable;wherein the at least one alignment loop is configured to engage with a second electrical cable, andwherein the core concentrator at least partially surrounds the second electrical cable and measures the electrical current in the second electrical cable.2. The optical sensor assembly of claim 1 , further comprising:a plurality of flange plates, wherein each of the plurality of flange plates is connected to the first end of the sensor body and a bottom end of one of the plurality of extension arms.3. The optical sensor assembly of claim 1 , wherein at least one of the plurality of extension arms is made from a non-conductive material.4. The optical ...

Current sensor having multiple sensitivity ranges

Systems and methods described herein provide a current sensor based on magnetic field detection having multiple sensor arrangements with multiple, different sensitivity ranges. The outputs of the multiple sensor arrangements can be combined to generate a single output signal. The current sensor can include two or more sensor arrangements, each having one or more magnetic field sensing elements, and configured to sense a magnetic field in different first measurement ranges corresponding to different ranges of currents through the conductor and further configured to generate different magnetic field signals indicative of the sensed magnetic field in the respective measurement range. The current sensor can include a circuit configured to generate an output signal indicative of a combination of the different magnetic field signals that corresponds to the current through the conductor.

POWER METER WITH AUTOMATIC CONFIGURATION

A power monitoring system includes a plurality of current sensors suitable to sense respective changing electrical current within a respective conductor to a respective load and a conductor sensing a respective voltage potential provided to the respective load. A power monitors determines a type of circuit based upon a signal from at least one of the current sensors and a signal from the conductor, wherein the type of circuit includes at least one of a single phase circuit, a two phase circuit, and a three phase circuit. The power meter configures a set of registers corresponding to the determined type of circuit in a manner such that the configuring is different based upon each of the single phase circuit, two phase circuit, and three phase circuit suitable to provide data corresponding to the determined type of circuit. 1. A system comprising:(a) an elongate support board(b) said elongate board electrically interconnected to at least four current sensors;(c) each of said current sensors spaced apart along a length of said elongate support board suitable that wires from respective circuit breakers pass through a respective said current sensor;(d) a set of electrical traces are supported by said elongate support board and electrically interconnected to a respective said current sensors;(e) a connector supported by said elongate support board that receives signals based upon signals from said at least four current sensors;(f) each of said four current sensors is a split core current sensor that is suitable to be opened with a respective said conductor to be inserted therein and suitable to be closed with said respective said conductor maintained therein;(g) each of said four current sensors interconnected with a respective flexible wire to said elongate support board.2. The system of wherein said elongate support board extends along a length of said circuit breakers. This application is a continuation of U.S. patent application Ser. No. 14/050,496, filed Oct. 10, ...

METHODS AND APPARATUS FOR DETERMINING CONDITIONS OF POWER LINES

Techniques for determining conditions of power lines in a power distribution system based on data collected by a plurality of sensor units deployed in the power distribution system. The techniques include obtaining data associated with measurements collected by at least two sensor units in the plurality of sensor units, and determining, by using at least one processor, at least one condition of at least one power line in the power distribution system by using the data obtained by the at least two sensor units. 1. A method for determining conditions of power lines in a power distribution system based on measurements collected by a plurality of sensor units deployed in the power distribution system , the method comprising:obtaining first transformed data associated with a first set of measurements collected by a first sensor unit in the plurality of sensor units and second transformed data associated with a second set of one or more measurements collected by a second sensor unit in the plurality of sensor units, the first transformed data comprising a first plurality of transform coefficient values calculated by applying a shift-invariant transformation to the first set of measurements, the second transformed data comprising a second plurality of transform coefficient values calculated by applying the shift-invariant transformation to the second set of measurements; and,determining, by using at least one processor and based at least in part on one or more features calculated from the first transformed data and the second transformed data, at least one condition of at least one power line in the power distribution system, wherein the first sensor unit and the second sensor unit are coupled to different power line segments.2. The method of claim 1 , wherein:obtaining the first transformed data comprises applying the shift-invariant transformation to the first set of measurements to produce the first plurality of transform coefficient values; and,obtaining the second ...

METHODS AND DEVICES FOR NON-INVASIVE ROOT PHENOTYPING

The present disclosure provides for an electronic sensor for detecting a root of a plant in soil, the electronic sensor that includes a first conductor plate configured to be disposed in soil, a switch, a power supply, and a signal extractor. The switch is electrically coupled to the first conductor plate and is configured to switch between a first mode and a second mode. The power supply is electrically coupled to the switch and is configured to provide an electrical charge to the first conductor plate in the first mode of the switch. The signal extractor is electrically coupled to the switch and is configured to extract a signal response at the first conductor plate in the second mode of the switch. The present disclosure further provides a second conductor plate configured to be disposed in soil adjacent to and substantially parallel to the first conductor plate. The second conductor plate is electrically coupled to ground. 1. An electronic sensor for detecting a root of a plant in soil , the electronic sensor comprising:a first conductor plate configured to be disposed in soil;a switch electrically coupled to the first conductor plate, wherein the switch is configured to switch between a first mode and a second mode;a power supply electrically coupled to the switch, wherein the power supply is configured to provide an electrical charge to the first conductor plate in the first mode of the switch; anda signal extractor electrically coupled to the switch, wherein the signal extractor is configured to extract a signal response at the first conductor plate in the second mode of the switch.2. The electronic sensor of claim 1 , further comprising:a microcontroller electrically coupled to the signal extractor, wherein the microcontroller is configured to receive the response signal from the signal extractor; anda memory electrically coupled to the microcontroller, wherein the memory is configured to store data associated with the signal extractor.3. The electronic ...

METHOD FOR MONITORING A POWER LINE

A method for monitoring a power line that carries electrical current, using a mobile inspection device, the mobile inspection device has a magnetic sensor and a camera, the method includes the following steps: measuring a magnetic field generated by the current, by the magnetic sensor; and capturing an image of the power line by the camera according to the measured magnetic field. A mobile inspection device, a computer program and a machine-readable storage medium implement the method. 1. A method for monitoring a power line that carries an electric current , using a mobile inspection device , wherein the mobile inspection device comprises a magnetic field sensor and a camera , said method comprising the following steps:measuring a magnetic field that is generated by the current, by the magnetic field sensor, andcapturing an image of the power line by the camera depending on the measured magnetic field.2. The method as claimed in claim 1 ,wherein the electric current is an alternating current,wherein a phase and/or a frequency of the electric current is identified based on the measured magnetic field,wherein the camera captures the image based on the identified phase and/or the identified frequency.3. The method as claimed in claim 2 ,wherein the capturing of an image comprises multiple exposure of a frame.4. The method as claimed in claim 2 ,wherein the capturing comprises exposure of multiple individual frames, which are added.5. The method as claimed in claim 4 ,wherein the multiple frames are shifted with respect to one another for the addition in order to compensate for a movement of the mobile inspection device.6. The method as claimed in claim 1 ,wherein, for the capturing of the image, only a specific subregion of an image sensor of the camera is read out depending on an alignment of the magnetic field sensor relative to the power line.7. The method as claimed in claim 2 ,wherein the mobile inspection device comprises at least one acoustic sensor, by means ...

Power meter with automatic configuration

A power monitoring system includes a plurality of current sensors suitable to sense respective changing electrical current within a respective conductor to a respective load and a conductor sensing a respective voltage potential provided to the respective load. A power monitors determines a type of circuit based upon a signal from at least one of the current sensors and a signal from the conductor, wherein the type of circuit includes at least one of a single phase circuit, a two phase circuit, and a three phase circuit. The power meter configures a set of registers corresponding to the determined type of circuit in a manner such that the configuring is different based upon each of the single phase circuit, two phase circuit, and three phase circuit suitable to provide data corresponding to the determined type of circuit.

NON-CONTACT VOLTAGE SENSING METHOD AND APPARATUS

A non-contact electric potential meter system to determine voltage between an AC conductor and a reference potential without direct electrical contact to the conductor. A housing provides a shielded measurement region that excludes other conductors and holds power supply means; an AC voltage sensing mechanism includes a conductive sense plate and an electrical connection to the reference potential. Waveform-sensing electronic circuitry obtains an AC voltage waveform induced by capacitive coupling between the conductor and the conductive sense plate. Capacitance-determining electronic circuitry obtains a scaling factor based on the coupling capacitance formed between the conductor and the conductive sense plate. Signal processing electronic circuitry uses the AC voltage waveform and the coupling capacitance-based scaling factor to obtain the voltage between the conductor and the reference potential. 122-. (canceled)23. A non-contact voltage sensing apparatus as described and illustrated herein , comprising a capacitive sensing mechanism capable of measuring a voltage between a hot conductor of an alternating current (AC) electrical circuit and a reference potential , without direct electrical contact to the hot conductor and without reference to any other AC voltage signal. This disclosure is directed to improved systems and methods of measuring electric potential in an alternating current (“AC”) conductor.Traditional approaches to measure AC voltage require making electrical contact with a target conductor and with a reference potential, forming a path with a voltmeter in parallel with the circuit to be measured.This application discloses a non-contact electric potential meter system suitable for obtaining a determination of a voltage between a reference potential and an energized or “hot” conductor of an alternating current electrical circuit, without direct electrical contact to the first hot conductor and without reference to any other AC voltage signal.The ...

NON-CONTACT VOLTAGE SENSING METHOD AND APPARATUS

A non-contact electric potential meter system to determine voltage between an AC conductor and a reference potential without direct electrical contact to the conductor. A housing provides a shielded measurement region that excludes other conductors and holds power supply means; an AC voltage sensing mechanism includes a conductive sense plate and an electrical connection to the reference potential. Waveform-sensing electronic circuitry obtains an AC voltage waveform induced by capacitive coupling between the conductor and the conductive sense plate. Capacitance-determining electronic circuitry obtains a scaling factor based on the coupling capacitance formed between the conductor and the conductive sense plate. Signal processing electronic circuitry uses the AC voltage waveform and the coupling capacitance-based scaling factor to obtain the voltage between the conductor and the reference potential. 122-: (canceled)23: A non-contact electric potential meter system suitable for obtaining a determination of a voltage between a first hot conductor of a first alternating current (AC) electrical circuit and a reference potential , without direct electrical contact to the first hot conductor and without comparison to a second AC voltage signal , the non-contact electric potential meter system comprising:a measurement region configured to receive the first hot conductor without interruption of the first hot conductor; and an electrode situated near the first hot conductor when the measurement region has received the first hot conductor;', 'an electrical connection connectable to a reference potential;', 'waveform-sensing electronic circuitry configured to obtain an AC voltage waveform induced by capacitive coupling between the first hot conductor and the electrode; and', 'capacitance-determining electronic circuitry configured to obtain a scaling factor based on a coupling capacitance formed between the first hot conductor and the electrode; and', 'signal processing ...

MOUNTING SYSTEM FOR SENSORS ON ELECTRICAL POWER LINES

A system for mounting a sensor to a power line is provided. The sensor configured to simultaneously measure voltage and current. The system includes a first hot line clamp configured to couple with the power line. A first spacer member is provided having a length and is coupled to the first hot line clamp. A plate is coupled to the sensor and the first spacer member. A current clamp is coupled to the plate and operably coupled between the sensor and the power line. Wherein the first hot line clamp, the first spacer member, the plate and the sensor cooperate in operation to measure the line to ground voltage of the power line. Wherein the current clamp and the sensor cooperate in operation to measure the current of the power line. 1. A system for mounting a sensor to a power line , the sensor configured to simultaneously measure voltage and current , the system comprising:a first hot line clamp configured to couple with the power line;a first spacer member having a length coupled to the first hot line clamp;a plate coupled to the sensor and the first spacer member;a current clamp coupled to the plate and operably coupled between the sensor and the power line;wherein the first hot line clamp, the first spacer member, the plate and the sensor cooperate in operation to measure the line to ground voltage of the power line; andwherein the current clamp and the sensor cooperate in operation to measure the current of the power line.2. The system of claim 1 , further comprising a tap wire having a first end and a second end claim 1 , the first end being electrically coupled to the power line claim 1 , the second end being configured to couple to a power source claim 1 , wherein the tap wire is configured to transfer electrical power to the power line from the power source.3. The system of claim 2 , wherein the tap wire is operably coupled to the current clamp.4. The system of claim 3 , further comprising an insulating member covering the tap wire.5. The system of claim 1 , ...

CONTACTLESS VOLTAGE TRANSDUCER

Contactless voltage transducer for measuring voltages between at least two conductors of an alternating voltage conductor system, the transducer including two or more capacitive current measurement units, each said capacitive current measurement unit comprising 116.-. (canceled)17. Contactless voltage transducer for measuring voltages between at least two conductors of an alternating voltage conductor system , the transducer including two or more capacitive current measurement units , each said capacitive current measurement unit comprising:an electrode surrounding a passage for receiving therethrough a respective said conductor of the alternating voltage conductor system,an electrode shield surrounding the electrode,an electrode signal processing circuit portion connected to the electrode and electrode shield, configured to output an analog measurement signal, anda reference voltage signal generator connected to the electrode shield and configured to generate a reference voltage source signal,wherein the reference voltage signal generators of the two or more capacitive current measurement units are connected together at a common floating voltage connection point.18. The contactless voltage transducer according to claim 17 , wherein the conductor system is a multiphase conductor system and the transducer comprises one capacitive current measurement unit for each phase of the electrical conduction system and in addition one for a neutral conductor.19. The contactless voltage transducer according to claim 18 , wherein the conductor system is a two phase or three phase conductor system.20. The contactless voltage transducer according to claim 17 , further comprising an external electrostatic shield surrounding said two or more capacitive current measurement units claim 17 , and an additional reference voltage signal generator connected to the external electrostatic shield and the common floating voltage connection point.21. The contactless voltage transducer according ...

POWER METER WITH AUTOMATIC CONFIGURATION

A power monitoring system includes a plurality of current sensors suitable to sense respective changing electrical current within a respective conductor to a respective load and a conductor sensing a respective voltage potential provided to the respective load. A power monitors determines a type of circuit based upon a signal from at least one of the current sensors and a signal from the conductor, wherein the type of circuit includes at least one of a single phase circuit, a two phase circuit, and a three phase circuit. The power meter configures a set of registers corresponding to the determined type of circuit in a manner such that the configuring is different based upon each of the single phase circuit, two phase circuit, and three phase circuit suitable to provide data corresponding to the determined type of circuit. 1. A power monitoring system comprising:(a) a plurality of current sensors suitable to sense respective changing electrical current within a respective one of a plurality of conductors to a respective load, where each of said respective one of said plurality of conductors is electrically interconnected to said respective load and each of said respective one of said plurality of conductors is electrically isolated from one another;(b) a plurality of conductors sensing a respective voltage potential provided to said respective load;(c) a power monitor that receives a respective current signal from each of said plurality of said current sensors and a respective voltage signal from each of said plurality of conductors, said power monitor determines a type of circuit based upon an analysis of said respective current signal from each of said plurality of said current sensors and said respective voltage signal from each of said plurality of conductors, wherein said type of circuit includes at least one of a single phase circuit, a two phase circuit, and a three phase circuit;(d) said power meter configuring itself corresponding to said determined type of ...

Method and system for detecting and locating single-phase ground fault on low current grounded power-distribution network

A method and system for detecting and locating a single-phase ground fault on a low current grounded power-distribution network, comprising: respectively testing and picking up the voltage signals and current signals at multiple positions on each phase feeder ( 61 ), and determining the corresponding transient voltage signals and transient current signals according to the extraction of the voltage signals and the current signals ( 62 ); when the change in the transient voltage signals and the transient current signals exceeds a preset threshold ( 63 ), synchronously picking up the voltage signals and current signals at multiple positions on a three-phase feeder ( 64 ); calculating corresponding zero-sequence voltages and zero-sequence currents according to the voltage signals and current signals synchronously picked up at multiple positions on the three-phase feeder ( 65 ), and then extracting the steady-state signal and transient signal of the zero-sequence voltage and zero-sequence current at each position on the three-phase feeder ( 66 ); and determining a specific fault location on a faulty line according to the steady-state signal and the transient signal ( 67 ). The method effectively detects and displays a single-phase ground fault on a low current grounded power-distribution network.

Method and system for detecting and locating single-phase ground fault on low current grounded power-distribution network

A method and system for detecting and locating a single-phase ground fault on a low current grounded power-distribution network, comprising: respectively testing and picking up the voltage signals and current signals at multiple positions on each phase feeder ( 61 ), and determining the corresponding transient voltage signals and transient current signals according to the extraction of the voltage signals and the current signals ( 62 ); when the change in the transient voltage signals and the transient current signals exceeds a preset threshold ( 63 ), synchronously picking up the voltage signals and current signals at multiple positions on a three-phase feeder ( 64 ); calculating corresponding zero-sequence voltages and zero-sequence currents according to the voltage signals and current signals synchronously picked up at multiple positions on the three-phase feeder ( 65 ), and then extracting the steady-state signal and transient signal of the zero-sequence voltage and zero-sequence current at each position on the three-phase feeder ( 66 ); and determining a specific fault location on a faulty line according to the steady-state signal and the transient signal ( 67 ). The method effectively detects and displays a single-phase ground fault on a low current grounded power-distribution network.

METHODS AND DEVICES FOR NON-INVASIVE ROOT PHENOTYPING

The present disclosure provides for an electronic sensor for detecting a root of a plant in soil, the electronic sensor that includes a first conductor plate configured to be disposed in soil, a switch, a power supply, and signal extractor. The switch is electrically coupled to the first conductor plate and is configured to switch between a first mode and a second mode. The power supply is electrically coupled to the switch and is configured to provide an electrical charge to the first conductor plate in the first mode of the switch. The signal extractor is electrically coupled to the switch and is configured to extract a signal response at the first conductor plate in the second mode of the switch. The present disclosure further provides a second conductor plate configured to be disposed in soil adjacent to and substantially parallel to the first conductor plate. The second conductor plate is electrically coupled to ground. 115- (canceled)16. An electronic device for monitoring growth of a root of a plant in a soil location , comprising:a support structure suitable for arrangement adjacent to the soil location; and a first conductor plate configured to be disposed in soil;', 'a switch electrically coupled to the first conductor plate, wherein the switch is configured to switch between a first mode and a second mode;', 'a power supply electrically coupled to the switch, wherein the power supply is configured to provide a first electrical charge to the first conductor plate in the first mode of the switch; and', 'a signal extractor electrically coupled to the switch, wherein, in the second mode of the switch, the signal extractor is configured to extract a signal at the first conductor plate based on the first electrical charge provided to the first conductor plate in the first mode of the switch., 'a plurality of electronic sensors affixed to the support structure, wherein at least one electronic sensor of the plurality of electronic sensors comprises17. The ...

HIGH-VOLTAGE LEAD-IN INSULATING DEVICE

The lead-in insulating device () of the present invention allows the passage of a live conductor () through a wall () of high-voltage electrical equipment (), and in turn allows sensing voltage and current, for which purpose it comprises at least two electric shields () and at least one current measurement element (), installed such that they allow detecting the presence/absence of voltage and precisely measuring the voltage and current, as well as a simple and rapid installation/removal thereof. 1123141. Lead-in insulating device () between an inner part () and an outer part () of high-voltage electrical equipment () , where said insulating device () comprises:{'b': 4', '5', '4', '4', '8', '2', '14', '9', '3', '14, 'a body () of insulating material and a conductor () internally going through said body () of insulating material, the body () of insulating material comprising a first end () intended for being located in the inner part () of the high-voltage electrical equipment (), and a second end () intended for being located in the outer part () of the high-voltage electrical equipment (), and'}{'b': 6', '7', '5', '4, 'at least two electric shields (, ) arranged around the conductor () and encapsulated in the same body () of insulating material,'}{'b': 6', '7', '9', '1', '7', '8', '1', '5', '6, 'characterized in that the first electric shield () is located in a position located before the second electric shield (), from the side of the second end () of the insulating device (); whereas the second electric shield () is located axially displaced towards the first end () of the insulating device () along the conductor () with respect to the first electric shield ().'}216. Insulating device () according to claim 1 , characterized in that the first electric shield () is grounded in order to make the electric field uniform.317. Insulating device () according to claim 1 , characterized in that the second electric shield () is a capacitive voltage sensing element for ...

SENSOR FOR MEASURING CURRENT IN A CONDUCTOR

A sensor for measuring current in a conductor has a substrate in the form of a stratified plate having a first metallization layer, a second metallization layer and an isolation layer between the first metallization layer and the second metallization layer, the substrate having a coil that winds along a coil axis parallel to the first metallization layer, having at least one winding. Each winding has a first track in the first metallization layer connected by a via through the first isolation layer to a second track in the second metallization layer, and the substrate has a measurer to measure the current in the coil, and having at least one winding only winding around non-magnetic material. 1. A sensor for measuring current in a conductor , the sensor comprising:a substrate in form of a stratified plate including a first metallization layer, a second metallization layer, and an isolation layer between the first metallization layer and the second metallization layer;a voltage measurement capacitor; andan energy measurer configured to measure energy stored in the voltage measurement capacitor,wherein the substrate includes a coil that winds along a coil axis parallel to the first metallization layer, including at least one winding,wherein the at least one winding includes a first track in the first metallization layer connected by a via through the first isolation layer to a second track in the second metallization layer,wherein the substrate further includes a measurer configured to measure current in the coil,wherein the at least one winding winds only around non-magnetic material,wherein the voltage measurement capacitor includes a first metallized area in the first metallization layer and a second metallized area in the second metallization layer,wherein the first metallized area and the second metallized area sandwich at least a part of the isolation layer between them.2. The sensor of claim 1 , wherein the substrate is a printed circuit board.3. The sensor of ...

Tap, meter and transformation device for power distribution from hfc plant

A power metering device includes a tap unit including a clamp for engaging a coaxial cable and a probe for electrically coupling to a center conductor of the coaxial cable without damaging the center conductor. A power consumption meter and a power port are electrically connected to the probe. A power transformer is optionally connected between the probe and the power port. A housing surrounds the meter and transformer. The power port supplies power to a customer device, and the meter measures an amount of power passing through the power port. The power consumed by the customer device is reported by the meter to a modem within the housing. The modem may utilize the probe and the center conductor of the coaxial cable to send power consumption data to a service provider, so that an operator of the customer device may be billed and/or the customer device may be controlled to limit its power consumption. Further, the modem may transfer data between the customer device and the service provider.

Detector for a conductor of an electrical network

A detector for an electrical conductor includes a frame on which is mounted a mechanism including a magnetic toroid, divided into a first and a second branches and at least two jaws for anchoring the detector on the electrical conductor, each jaw being rotationally mobile between an open position and a locked position. The first branch of the toroid is secured to the frame and its second branch is rotationally mobile relative to the first branch, under the action of an elastic return member, between an open position, a preclosure position and a closed position of the magnetic toroid. The mechanism also includes a bearing member), secured to the second branch and defining at least one concave volume for partially receiving the electrical conductor. The bearing member is suitable for transmitting to the second branch a torque of pre-closure to a pre-closure position.

Method and apparatus for contactless voltage and current estimation through measurements of electric and magnetic fields with redundant sensor arrays

A multi-sensor, real-time, in-process current and voltage estimation system is disclosed including sensors, affiliated hardware, and data processing algorithms that allow accurate estimation of currents and voltages from magnetic and electric field measurements, respectively. Aspects of the system may be embodied in a detector that is readily attachable to conductors of an energized system for contactless current and/or voltage sensing of the conductors without requiring the conductors to be disconnected from the energized system.

Transmission line measuring device and method for connectivity and monitoring

A method for connecting low power radios into a self-assembling and self-healing network with multiple portals to higher speed networks such as, but not limited to, electrical or optical Ethernet is provided for monitoring transmission lines, for example, or other monitoring application. An arrangement of sensors is provided (e.g., sensors can be associated with clamps or positioned along infrastructure being monitored and without dependence on any clamps or other devices) that are designed to communicate and operate in an geographically distributed array to provide increased and autonomous monitoring of large utility, highway, communication and similar networks. A unique collection of sensors (e.g., an anemometer with no moving parts) provides comprehensive diagnostics for improved operation of large geographic scale utility, highway, communication and similar infrastructure.

ELECTRO-OPTIC CURRENT SENSOR WITH HIGH DYNAMIC RANGE AND ACCURACY

An optical sensor that senses current by directing polarized light across an airgap that is orthogonal to a direction of current running through a conductor. The sensor includes a prism having a high Verdet constant for high sensitivity to magnetic fields, which cause an angle of polarization of the polarized light to be rotated as an indication of the magnitude of current. A polarizing beamsplitter having a low Verdet constant is mounted to the prism so that incoming light that is traveling in a direction orthogonal to the magnetic field being sensed across the airgap is insensitive to unwanted magnetic fields produced by nearby conductors. The distance the light travels in this orthogonal direction is minimized, reducing the overall volume of the sensor, making a compact sensor highly sensitive to magnetic fields of interest, largely insensitive to unwanted magnetic fields, and having a very high dynamic range for sensing current. 1. An optical sensor assembly for measuring electrical current in a current carrying cable , comprising:an input light polarizing element having a low Verdet constant and configured to receive an incoming light beam and produce a polarized light;a prism mounted to the input light polarizing element, the prism receiving the polarized light and having a reflective surface positioned immediately adjacent to the input light polarizing element, the reflective surface changing a direction of the polarized light passing through an intermediate portion of the prism; andan output light polarizing element coupled to the prism, wherein the prism has a high Verdet constant relative to the respective Verdet constants of the input light polarizing element and the output light polarizing element.2. The optical sensor assembly of claim 1 , wherein the prism has a length claim 1 , and the input light polarizing element and the output light polarizing element are mounted to a transmitted light surface of the prism so as not to extend beyond the length of ...

Wireless sensor device and system comprising the same

A wireless sensor device ( 10 ) for a high-voltage environment, which device ( 10 ) comprises a housing ( 12 ), a control unit ( 18 ) for monitoring one or more variable(s) (T) and a power supply unit ( 20 ), wherein the housing ( 12 ) is designed such that an electric field (E) is minimized and the communication unit ( 16 ) is arranged partly inside the housing ( 12 ).

Modular instrument transformer

Instrument transformer for power grid conductor includes: a current sensing device having a secondary coil winding through which a power grid primary conductor is capable of extending and connecting to a primary conductor connector, a first low voltage (LV) lead connected to the secondary coil winding and a LV connector, and a first high voltage (HV) lead connected between the primary conductor connector and a HV connector, the voltage sensing device having a core with a primary coil winding, a second HV lead connected between a HV connector and primary coil winding, a grounding conductor connected between the primary coil winding and an output terminal, a second LV lead connected between a LV connector and output terminal, wherein the current and voltage sensing devices are electrically connected via HV and LV connectors, and wherein the current and voltage sensing devices are separable when corresponding HV and LV connectors are disconnected.

Active current monitor

A current monitor for a transmission line having powered active components is provided. A current monitor includes: a housing configured to be coupled to a transmission line, an inductive current sensor in the housing configured to measure a value of the current on the transmission line to generate a sensor signal, a power source, and a sensor signal conversion circuit in the housing configured to receive power from the power source and to generate a current output signal based on the sensor signal, the current output signal having a natively useful form.

DYNAMIC REAL TIME TRANSMISSION LINE MONITOR AND METHOD OF MONITORING A TRANSMISSION LINE USING THE SAME

A dynamic real time transmission line monitor, a dynamic real time transmission line monitoring system, and a method of dynamic real time transmission line monitoring are provided. A dynamic real time transmission line monitor includes a housing installable on a transmission line, the housing including a base portion and a cover portion; at least one sensor configured to sense in real time at least one of a temperature, a position, a current, an acceleration, a vibration, a tilt, a roll, or a distance to a nearest object, the at least one sensor including a radar sensor configured to sense a distance to a nearest object; and an antenna in the cavity of the housing and configured to transmit a signal including information sensed by the at least one sensor away from the monitor in real time. 1. A dynamic real time transmission line monitor comprising: a base portion; and', 'a cover portion coupled to the base portion and defining a cavity of the housing together with the base portion, at least one of the cover portion or the base portion being movable relative to the other between an open position of the housing in which a length of the transmission line is receivable in the cavity, and a closed position of the housing in which the length of the transmission line is retained in the cavity;, 'a housing installable on a transmission line, the housing comprisingat least one sensor supported by the housing and configured to sense in real time at least one of a temperature, a position, a current, an acceleration, a vibration, a tilt, a roll, or a distance to a nearest object, the at least one sensor comprising a radar sensor configured to sense a distance to a nearest object; andan antenna in the cavity of the housing, the antenna configured to transmit a signal including information sensed by the at least one sensor away from the monitor in real time.2. The dynamic real time transmission line monitor of claim 1 , wherein the cover portion is made from a semiconductive ...

A HIGH VOLTAGE DIVIDER

An HV divider stepping down an input high voltage in HV systems includes a primary part with first and second assemblies within an insulator and a divider input terminal. The first assembly is a first capacitor stack having first high and middle voltage capacitors. The second assembly has a second capacitor stack and resistor stack in parallel. The second capacitor stack has second high and low voltage capacitors. The resistor stack has high and low voltage resistors. The secondary part has an electromagnetic unit and a secondary part output set has: 15-. (canceled)6. An HV divider for stepping down an input high voltage in HV systems , the HV divider comprising:a divider input terminal at which the input high voltage is applied and a divider output terminal set at which a set of output voltages are provided;a primary part and a secondary part being electrically connected to each other and each having a respective input and a respective output, said output of said primary part being said input of said secondary part, said input of said primary part being said divider input terminal and said output of said secondary part being said divider output terminal set;an insulator;said primary part including a first assembly and a second assembly disposed within said insulator;said first assembly being a first capacitor stack including a first high voltage capacitor and a middle voltage capacitor defining a point therebetween;said second assembly including a second capacitor stack and a resistor stack electrically connected in parallel to each other, said second capacitor stack including a second high voltage capacitor and a low voltage capacitor defining a point therebetween, said resistor stack including a high voltage resistor and a low voltage resistor defining a point therebetween; a first intermediate terminal being connected to said point between said capacitors of said first capacitor stack; and', 'a second intermediate terminal being connected to a link connecting ...

POWER METER WITH AUTOMATIC CONFIGURATION

A power monitoring system includes a plurality of current sensors suitable to sense respective changing electrical current within a respective conductor to a respective load and a conductor sensing a respective voltage potential provided to the respective load. A power monitors determines a type of circuit based upon a signal from at least one of the current sensors and a signal from the conductor, wherein the type of circuit includes at least one of a single phase circuit, a two phase circuit, and a three phase circuit. The power meter configures a set of registers corresponding to the determined type of circuit in a manner such that the configuring is different based upon each of the single phase circuit, two phase circuit, and three phase circuit suitable to provide data corresponding to the determined type of circuit. 1. A power monitoring system comprising:(a) a plurality of current sensors suitable to sense respective changing electrical current within a respective conductor to a respective load;(b) a plurality of conductors sensing a respective voltage potential provided to said respective load;(c) a power monitor that receives a respective current signal from each of said plurality of said current sensors and a respective voltage signal from each of said plurality of conductors, said power monitor determines a type of circuit based upon an analysis of said respective current signal from each of said plurality of said current sensors and said respective voltage signal from each of said plurality of conductors, wherein said type of circuit includes at least one of a single phase circuit, a two phase circuit, and a three phase circuit;(d) said power meter configuring itself corresponding to said determined type of circuit in a manner such that said configuring is different based upon each of said single phase circuit, two phase circuit, and three phase circuit.2. The power meter of wherein said plurality of current sensors includes at least three current ...

Hybrid Current Sensor Assembly

A hybrid current sensor assembly has a conductor, Hall core, Hall sensor, shunt terminal, and a microprocessor. The conductor has a first terminating end and a second terminating end. The Hall core generates a magnetic field from current flow in the conductor. The Hall sensor measures potential difference between first terminating end and the second terminating end of the conductor based on the magnetic field applied to the Hall core. The shunt terminal is positioned on a central portion of the conductor. The microprocessor is connected to the shunt terminal to measure the current flow in the conductor.

INTELLIGENT SENSOR NETWORK IN A LOAD CENTER

According to one aspect, embodiments of the invention provide a system for monitoring a load center comprising a plurality of current sensors, a communication bus, a plurality of sensor circuits, a power module configured to be coupled to a load center input line and to receive input AC power from the input line, a collector, and a cable configured to be coupled between the power module and the collector, wherein the power module is further configured to provide power to the plurality of sensor circuits via the communication bus, provide power to the collector via the cable, measure at least one of voltage, frequency and phase of input AC power and provide signals related to the measured voltage, frequency or phase to the collector via the cable, receive current measurement signals from the plurality of sensor circuits and provide the received current measurement signals to the collector via the cable. 1. A system for monitoring a plurality of circuit branches coupled to an input line within a load center having a housing , the system comprising:a plurality of current sensors, each configured to be coupled to at least one of the plurality of circuit branches and to produce a signal having a level related to a current level of the one of the plurality of circuit branches;a communication bus;a plurality of sensor circuits, each coupled to an associated one of the plurality of current sensors and configured to be coupled to the communication bus, wherein each one of the plurality of sensor circuits is configured to convert the signal from the associated one of the plurality of current sensors to a digital current measurement signal and provide the digital current measurement signal to the communication bus;a power module configured to be coupled to the input line and the communication bus and to receive input AC power from the input line,a collector; anda cable configured to be coupled between the power module and the collector; provide power to the plurality of sensor ...

OVERHEAD POWER LINE SENSOR

A power distribution monitoring system is provided that can include a number of features. The system can include a plurality of power line sensing devices configured to attach to individual conductors on a power grid distribution network. The sensing devices can be configured to measure and monitor, among other things, current values and waveforms, phase voltage, conductor current, phase-to-phase voltage, conductor temperatures, ambient temperatures, vibration, wind speed and monitoring device system diagnostics. Methods of installing and protecting the system are also discussed. 1. A power line monitoring system , comprising:a first voltage divider element configured to be attached to a first conductor;a second voltage divider element configured to be attached to a second conductor;a wire connected to the first voltage divider element and the second voltage divider element; anda processor electrically coupled to the first voltage divider element and the second voltage divider element, the processor being configured to monitor a voltage of the first and second conductors.2. The system of claim 1 , wherein the first voltage divider element is attached to the first conductor with a first clamp claim 1 , and wherein the second voltage divider element is attached to the second conductor with a second clamp.3. The system of claim 1 , further comprising a silicon overmold configured to protect the power line monitoring system from moisture.4. The system of claim 1 , wherein the processor is configured to sample current through the wire to calculate a phase-to-phase voltage.5. The system of claim 1 , further comprising power harvesting electronics configured to harvest energy from the first or second conductor to provide power to the power line monitoring system.6. The system of claim 1 , wherein the first and second voltage divider elements comprise a mix of resistive and capacitive voltage divider elements.7. The system of claim 6 , wherein the resistive voltage divider ...

Sensored cable for a power network

Sensored cable ( 1 ) for distribution of electrical power in a power network, the sensored cable comprising an inner conductor and an insulating layer ( 10 ) arranged concentrically around at least an axial section of the inner conductor. The sensored cable further comprises a capacitive voltage sensor ( 100 ) for sensing a voltage of the inner conductor, characterized by the sensor including a printed circuit board element ( 60 ), which is placed over an electrically isolated piece ( 140 ) of conductive or semiconductive material, arranged on the insulating layer of the cable. The electrically isolated piece ( 140 ) of conductive or semiconductive material is operable to form an electrode of a sensing capacitor of the capacitive voltage sensor. The cable may comprise a (semi-) conductive layer ( 20 ). The electrically isolated piece ( 40 ) of conductive or semiconductive material may comprise a portion of the (semi-) conductive layer.

A METHOD AND SYSTEM FOR DYNAMIC FAULT DETECTION IN AN ELECTRIC GRID

A system for detecting a fault in an electric grid, including a plurality of grid measuring devices distributed in the electric grid, being operative to measure current and/or voltage with their respective time of occurrence, enabling a user to define at least one fault type, and at least one rule for detecting the fault type, the rule associating the fault type with at least one of the measurements, executing the measurements, and analyzing the measurements according to the rule to detect a fault. 1. A method for detecting a fault in an electric grid , the method comprising the steps of:distributing in said electric grid a plurality of grid measuring devices comprising at least one of current measurement sensor and voltage measurement sensor, said grid measuring devices being operative to measure at least one of current measurement and voltage measurement to form a plurality of measurements with their respective time of occurrence;defining at least one fault type;defining at least one rule for detecting said at least one fault type, said rule associating said fault type with at least one of said measurements;executing said measurements; andanalyzing said measurements according to said at least one rule to detect a fault.2. The method according to wherein said measurement comprises at least one of: an absolute value claim 1 , a change of value claim 1 , and a rate of change of value claim 1 , an instantaneous change of at least one of voltage claim 1 , current claim 1 , and power claim 1 , a transient claim 1 , a spike claim 1 , and a surge.3. The method according to wherein said rule comprises at least one of:a plurality of measurements by a single grid measurement device, said measurements executed in substantially the same time;a plurality of measurements by a single grid measurement device, said measurements executed in different times; anda plurality of measurements by a plurality of grid measurement devices, said measurements executed in substantially the same ...

Hybrid Current Sensor Assembly

A hybrid current sensor assembly has a conductor, Hall core, Hall sensor, shunt terminal, and a microprocessor. The conductor has a first terminating end and a second terminating end. The Hall core generates a magnetic field from current flow in the conductor. The Hall sensor measures potential difference between first terminating end and the second terminating end of the conductor based on the magnetic field applied to the Hall core. The shunt terminal is positioned on a central portion of the conductor. The microprocessor is connected to the shunt terminal to measure the current flow in the conductor.

Sensor, sensor signal processor, and power line signal encoder

Provided is a sensor in which a current sensor that detects a current of a power line as a change in a magnetic field and a voltage sensor that detects a voltage of the power line using capacitive coupling are integrally formed. The transmission of signals related to substantially the same sections is omitted in order to effectively compress an output signal from the sensor and an output signal from the voltage sensor. When the amplitude and phase of a fundamental wave which are estimated from the output signal from the sensor and the amplitude and phase of harmonics are encoded, the amplitude and phase of the harmonics are relativized with a value for the fundamental wave.

Systems, methods, and devices for energy and power metering

Disclosed herein are systems, methods, and devices for power and energy metering. Devices may include first processing logic coupled to an isolator and configured to receive a first bit stream from a first modulator via the isolator. The first bit stream may be generated by the first modulator based on a first analog signal. The first processing logic may be further configured to receive a second bit stream from a second modulator via the isolator. The second bit stream may be generated by the second modulator based on a second analog signal. The processing logic may be further configured to generate a third bit stream based on a combination of the first bit stream with the second bit stream. The devices may also include second processing logic configured to generate an output signal based on one or more values of the third bit stream. The output signal may characterize a measurement of electrical power associated with an electrical circuit.

Combined Current and Voltage Sensor for High Voltage Electric Power Lines

A high voltage electric power line monitor includes a current sensor, and voltage sensor, an energy harvesting power supply, and communication device. The monitor is configured to be supported by a structure, such a sectionalizing switch disposed within an insulator cylinder. The current sensor coil and an energy harvesting coils are configured to surround and be positioned transverse to the monitored power line with the power line extending through an aperture formed by the current sensor. A foil patch voltage sensor is carried on an electronics board configured to be positioned parallel to the monitored power line, typically below the current sensor. Both the current sensor and the voltage sensor are configured to positioned adjacent to, but spaced apart from, the monitored power line. The sensors are housed within a Faraday cage to shield the current sensor from electromagnetic contamination.

Combined DC Current, AC Current and Voltage Sensor for High Voltage Electric Power Lines

The present invention may be embodied in an in-line high voltage electric power line monitor including a DC current sensor, an AC current sensor, a voltage sensor, an energy harvesting power supply, and a communication device configured. The in-line power line monitor includes a bus bar that connects in series with the monitored power line. For example, the in-line power line monitor may be connected at the junction point between the monitored power line and a support structure, such a sectionalizing switch that supports the monitor positioned between the switch and the power line. A pair of DC current measurement pickups are spaced apart on the bus bar and operatively connected to the microprocessor. The in-line power line monitor also includes an AC current sensor coil and an energy harvesting device (e.g., inductive coil) that surround the bus bar. The AC current sensor coil, the power supply coil and the voltage sensor positioned adjacent to, but spaced apart from, the bus bar. An electronics board pair carries a pair of foil patch voltage sensors and a pair of foil patch antenna elements positioned adjacent to the outer perimeter of the electronics board. Although the in-line power line monitor does not require a separate power supply, the electronics board may carry a backup battery if desired. 1. An in-line electric power line monitoring device , comprising:a bus bar configured to be connected in-line with an electric power line conductor;an electronics board positioned transverse to the bus bar with the bus bar extending through the electronics board, electronic components carried the electronics board comprising a microprocessor, a memory and a radio, operatively connected to the microprocessor;a voltage sensor and an antenna carried on the electronics board operatively connected to the microprocessor,a pair of DC current measurement pickups spaced apart on the bus bar and operatively connected to the microprocessor;a power supply coil operatively connected ...

Cyber Synchronous Machine (Cybersync Machine)

This invention discloses a controller and method for a cyber synchronous machine (CSM, in short, cybersync machine), namely, a power electronic converter that is seamlessly equipped with computational algorithms (i.e., the controller) to represent the intrinsic and fundamental principles of physical synchronous machines. The CSM can be operated in the grid-connected mode or the islanded mode to take part in the regulation of the frequency and the voltage. The controller also includes auxiliary blocks to achieve self-synchronization without measuring or estimating the grid frequency and the regulation of real power and reactive power to the given reference values without static errors. The control signal for the power electronic converter can be the output voltage generated by the engendering block or the sum of the output voltage and the virtual current. A unique feature of the disclosed CSM is that, if the system it is connected to is passive, then the whole system is passive and, hence, is guaranteed to be stable. 1. A controller and method to operate a power electronic converter as a cyber synchronous machine (CSM , in short , cybersync machine) , comprisinga torque-frequency channel to generate a frequency signal according to the inputs consisting of a torque set-point, a negative torque feedback signal and a frequency reference,a quorte-flux channel to generate a flux signal according to the inputs consisting of a quorte set-point, a negative quorte feedback signal and a flux reference,an engendering block that takes the frequency generated in the torque-frequency channel, the flux generated in the quorte-flux channel and an input current to generate an output voltage, and a torque signal and a quorte signal for the negative torque and quorte feedback in the torque-frequency channel and the quorte-flux channel, respectively,a virtual impedance to generate a virtual current according to the difference of two voltages,a switch to choose the virtual current or an ...

ADJUSTABLE LENGTH ROGOWSKI COIL MEASUREMENT DEVICE WITH NON-CONTACT VOLTAGE MEASUREMENT

Systems and methods are provided for measuring electrical parameters in an insulated conductor without requiring a galvanic connection. A non-contact, electrical parameter sensor probe may be operative to measure both current and voltage in an insulated conductor. The sensor probe includes a body, a Rogowski coil coupled to the body, and a non-contact voltage sensor coupled to the body or the Rogowski coil. The size of the loop of the Rogowski coil is selectively adjustable, such that the loop may be tightened around the conductor under test until the conductor is positioned adjacent a portion of the body or Rogowski coil that includes the non-contact voltage sensor. Measured electrical parameters may be provided to a user, e.g., via a display, or may be transmitted to one or more external systems via a suitable wired or wireless connection. 1. An electrical parameter sensor probe operative to detect an electrical parameter in an insulated conductor without requiring galvanic contact with the insulated conductor , the electrical parameter sensor probe comprising:a Rogowski coil;a body comprising a first channel and a second channel, the first and second channels having respective first and second open ends, the respective first ends of the first and second channels being spaced apart from each other, and the respective second ends of the first and second channels being adjacent each other, each of the first and second channels sized and dimensioned to slidably contain a respective length of the Rogowski coil therein such that a loop of the Rogowski coil is formed between the respective first open ends of the first and second channels, and the size of the loop is selectively adjustable by movement of the Rogowski coil within at least one of the first and second channels; anda non-contact sensor coupled to the body and positioned between the respective first ends of the first and second channels, the non-contact sensor operative to sense at least one electrical ...

CURRENT SENSOR

A current sensor includes: six or more bus bars; a core made of a magnetic material and having a base portion and seven or more arm portions which extend in a vertical direction from the base portion and are spaced apart from each other, and in which each of the bus bars is inserted into a gap formed between adjacent arm portions; and a main body configured to integrally hold the bus bars and the core in a state in which the bus bars and the core are insert-molded using polyphenylene sulfide (PPS) or polyphthalamide (PPA). 1. A current sensor comprising:six or more bus bars;a core made of a magnetic material and having a base portion and seven or more arm portions which extend in a vertical direction from the base portion and are spaced apart from each other, and in which each of the bus bars is inserted into a gap formed between adjacent arm portions; anda main body configured to integrally hold the bus bars and the core in a state in which the bus bars and the core are insert-molded using polyphenylene sulfide (PPS) or polyphthalamide (PPA).2. The current sensor according to claim 1 , wherein the main body has a protruding portion that is formed as an end portion of the main body claim 1 , which holds the bus bars claim 1 , protrudes in an extension direction of the bus bars.3. The current sensor according to claim 1 , wherein the main body has a pair of hole portions that are respectively formed at opposite sides of each of the bus bars interposed therebetween. This application is based on and claims priority under 35 U.S.C. §119 to Japanese Patent Application 2016-126810, filed on Jun. 27, 2016, the entire contents of which are incorporated herein by reference.This disclosure relates to a current sensor which measures a current flowing in a conductor.Recently, hybrid vehicles or electric vehicles have been distributed, which are provided with a three-phase alternating current motor (hereinafter, simply referred to as a “motor”) and an inverter. In these vehicles ...

HARMONIC DETECTION SYSTEM

A harmonic detection system () comprises a measurement component (), a harmonic abnormality determination unit (), and a smartphone (). The measurement component () is installed at a specific position on a distribution line constituting a distribution network (), and measures data related to the current of the distribution line. The harmonic abnormality determination unit () uses some or all of the data related to current as detection data to detect abnormality related to harmonics. The smartphone () is owned by a user (G), and notifies the user that an abnormality has occurred in the distribution line when a harmonic is detected. 1. A harmonic detection system , comprising:a measurement component configured to be installed at a specific position on a power line constituting a distribution network, the measurement component measuring data related to current of the power line;a harmonic detector configured to use some or all of the data related to the current as detection data to detect a harmonic;a notification device configured to be owned by a user of power supplied by the power line, the notification device notifying the user that an abnormality has occurred in the power line when the harmonic is detected; anda storage unit configured to store data of the measurement component in association with data of the notification device; anda smart meter configured to detect an amount of power supplied to the power line,wherein the storage unit is configured to:store identification information of the measurement component in association with identification information unique to the smart meter configured to measure power of the power line on which the measurement component is installed, andstore the identification information unique to the smart meter in association with the notification device of a user who owns the smart meter.2. The harmonic detection system according to claim 1 ,further comprising a first transmitter configured to transmit information related to ...

System and method for providing and managing electricity

A system and method for providing power to and monitoring the energy usage includes at least one electrical control unit having an unmanned vehicle, at least one electrical control unit, a sensor enabled to monitor a given condition; a power source; a processor configured to be in communication with the at least one sensor and said power source, said processor further configured to manage communications with said management system; an unmanned vehicle releasibly coupled to said electrical control unit, said processor being adapted to release said unmanned vehicle to enable the unmanned vehicle to separate from said electrical control unit, wherein said sensor is enabled to monitor at least one of the following: voltage, current, real power, apparent power, reactive power, frequency, total harmonic distortion, arc fault, plug loads, power factor, GFI, AFI, light, temperature, humidity, methane, carbon monoxide, motion, thermal, occupancy, radio frequency, audio, video, infrared, and combinations thereof and wherein said unmanned vehicle can travel to various locations.

Systems, methods, and devices for energy and power metering

Disclosed herein are systems, methods, and devices for power and energy metering. Devices may include first processing logic coupled to an isolator and configured to receive a first bit stream from a first modulator via the isolator. The first bit stream may be generated by the first modulator based on a first analog signal. The first processing logic may be further configured to receive a second bit stream from a second modulator via the isolator. The second bit stream may be generated by the second modulator based on a second analog signal. The processing logic may be further configured to generate a third bit stream based on a combination of the first bit stream with the second bit stream. The devices may also include second processing logic configured to generate an output signal based on one or more values of the third bit stream. The output signal may characterize a measurement of electrical power associated with an electrical circuit.

Device for Measuring Electrical Current, Voltage and Temperature on an Electrical Conductor Made of Rigid Material

A device for measuring electrical current, voltage and temperature in a conductor made of rigid material is disclosed. The conductor is formed from two conductor sections, between which an electrical resistor element is provided that is made of a material having greater resistance than the material of the conductor sections. In the region of the resistor element, a flattened area with a depression is provided, over which a measuring arrangement, through which a portion of the current flowing through the conductor flows, is placed in the manner of a bridge. In the measuring arrangement is arranged in the vicinity of a contact piece by means of which the conductor can be connected in an electrically conducting manner to another conductor such that the heat generated at the contact point is measured.

Device for measuring electrical current, voltage and temperature on an electrical conductor made of rigid material

A device for measuring electrical current, voltage and temperature in a conductor made of rigid material is disclosed. The conductor is formed from two conductor sections, between which an electrical resistor element is provided that is made of a material having greater resistance than the material of the conductor sections. In the region of the resistor element, a flattened area with a depression is provided, over which a measuring arrangement, through which a portion of the current flowing through the conductor flows, is placed in the manner of a bridge. In the measuring arrangement is arranged in the vicinity of a contact piece by means of which the conductor can be connected in an electrically conducting manner to another conductor such that the heat generated at the contact point is measured.

System for measuring an electromagnetic field, a control system using the measuring system, and an electronic circuit designed for the measuring system

This system for measuring an electromagnetic field radiated by an electrical component of an electronic circuit, the electrical component being fixed to a dielectric substrate of the electronic circuit, is wherein a transducer ( 90 to 95 ) is etched on the substrate of the electronic circuit.

Current sensor having multiple sensitivity ranges

Systems and methods described herein provide a current sensor based on magnetic field detection having multiple sensor arrangements with multiple, different sensitivity ranges. The outputs of the multiple sensor arrangements can be combined to generate a single output signal. The current sensor can include two or more sensor arrangements, each having one or more magnetic field sensing elements, and configured to sense a magnetic field in different first measurement ranges corresponding to different ranges of currents through the conductor and further configured to generate different magnetic field signals indicative of the sensed magnetic field in the respective measurement range. The current sensor can include a circuit configured to generate an output signal indicative of a combination of the different magnetic field signals that corresponds to the current through the conductor.

System for measuring an electromagnetic field, a control system using the measuring system, and an electronic circuit designed for the measuring system

This system for measuring an electromagnetic field radiated by an electrical component of an electronic circuit, the electrical component being fixed to a dielectric substrate of the electronic circuit, is wherein a transducer ( 90 to 95 ) is etched on the substrate of the electronic circuit.

动态实时传输线路监控器

本发明公开了一种动态实时传输线路监控器、动态实时传输线路监控系统、和动态实时传输线路监控的方法。动态实时传输线路监控器包括：可安装在传输线路上的外壳，该外壳包括基部部分、和连接到基部部分并连同所述基部部分一起限定外壳的空腔的盖部分；传感器，所述传感器被配置成实时感测温度、位置、电流、加速、振动、倾角、滚动或者到最近物体的距离中的至少一个；和所述外壳的空腔中的天线，所述天线被配置成发送包括通过远离监控器的传感器实时感测的信息的信号。

Sensor, method and system for monitoring power lines

FIELD: physics. SUBSTANCE: magnetic fields are picked up with coils lying sufficiently close to the lines for measuring voltage induced by into the coils without contact with the lines. Components x and y of magnetic fields are used to calculate wire sag, and data on sag together with data on field intensity can be used to calculate the current load on the line and the current phase. Calculation of sag using this invention is independent of the measured voltage across the line and current in the line. EFFECT: high accuracy. 25 cl, 11 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 437 105 (13) C2 (51) МПК G01R 15/14 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2009113018/28, 07.09.2007 (72) Автор(ы): СИРАКЬЮЗ Стивен Дж. (US), КЛАРК Рой (US), ХАЛВЕРСОН Питер Г. (US), ТЭШ Фредерик М. (US), БАРЛОУ Чарльз В. (US) (24) Дата начала отсчета срока действия патента: 07.09.2007 (43) Дата публикации заявки: 20.10.2010 Бюл. № 29 (73) Патентообладатель(и): ПРОМИТИЭН ДИВАЙСЕЗ ЭлЭлСи (US) 2 4 3 7 1 0 5 (45) Опубликовано: 20.12.2011 Бюл. № 35 (56) Список документов, цитированных в отчете о поиске: US 2005073295 07.04.2005. US 2002047709 25.04.2002. US 6545211 08.04.2003. DE 10242158 18.03.2004. 2 4 3 7 1 0 5 R U (86) Заявка PCT: US 2007/077881 (07.09.2007) C 2 C 2 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 08.04.2009 (87) Публикация заявки РСТ: WO 2008/031029 (13.03.2008) Адрес для переписки: 129090, Москва, ул.Б.Спасская, 25, стр.3, ООО "Юридическая фирма Городисский и Партнеры", пат.пов. А.В.Мицу, рег.№ 364 (54) ДАТЧИК, СПОСОБ И СИСТЕМА ТЕКУЩЕГО КОНТРОЛЯ ЛИНИЙ ЭЛЕКТРОПЕРЕДАЧИ (57) Реферат: Изобретение относится к измерению магнитного поля, созданного фазными проводами в многофазных линиях электропередачи. Магнитные поля регистрируют катушками, расположенными достаточно близко к линиям для измерения напряжения, наведенного полем в катушках, без контакта с линиями. Составляющие х и y магнитных полей ...

Dynamic monitor of power transmission lines in real time

FIELD: measuring equipment. SUBSTANCE: invention relates to electrical measuring equipment. Overhead transmission line monitor contains a casing that is installed on the transmission line. At that, casing comprises a base part and a cover portion connected to the base portion and defining the casing cavity together with the base portion. Moreover, the cover is movable relative to the other base part. At that, part of the cover is made of a semiconductor material. EFFECT: technical result is in eliminating of the corona discharge. 22 cl, 24 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 649 224 C2 (51) МПК G01R 31/08 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК G01R 31/08 (2017.08) (21)(22) Заявка: 2015114578, 12.03.2014 (24) Дата начала отсчета срока действия патента: Дата регистрации: (73) Патентообладатель(и): ЛИНДСИ МЭНЬЮФЭКЧУРИНГ КОМПАНИ (US) 30.03.2018 (56) Список документов, цитированных в отчете о поиске: US 2009015239 A1, 15.01.2009. US 12.03.2013 US 13/796,614 (43) Дата публикации заявки: 10.11.2016 Бюл. № 31 2005017751 A1, 27.01.2005. US 5565783 A, 15.10.1996. US 4855671 A, 08.08.1989. (45) Опубликовано: 30.03.2018 Бюл. № 10 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 17.04.2015 2 6 4 9 2 2 4 Приоритет(ы): (30) Конвенционный приоритет: R U 12.03.2014 (72) Автор(ы): ЛИНДСИ Кит И. (US), СПИЛЛЭЙН Филип И. (US), ВАН Ан-Чиун (US) US 2014/024825 (12.03.2014) C 2 C 2 (86) Заявка PCT: (87) Публикация заявки PCT: R U 2 6 4 9 2 2 4 WO 2014/165217 (09.10.2014) Адрес для переписки: 129090, Москва, ул. Б. Спасская, 25, стр. 3, ООО "Юридическая фирма Городисский и Партнеры" (54) ДИНАМИЧЕСКИЙ МОНИТОР ЛИНИЙ ЭЛЕКТРОПЕРЕДАЧИ В РЕАЛЬНОМ ВРЕМЕНИ (57) Реферат: Изобретение относится к вместе с базовой частью. Причем крышка электроизмерительной технике. Монитор ЛЭП является подвижной относительно другой базовой содержит кожух, устанавливаемый на линии части. Причем часть крышки выполнена из ...

DEVICE FOR MEASURING ELECTRIC CURRENT FLOWING IN THE ELECTRICAL EQUIPMENT UNIT, ALLOWING TO CARRY OUT THE POWER MEASUREMENT, AND THE ELECTRICAL EQUIPMENT UNIT CONTAINING THIS DEVICE

1. Устройство для измерения, по меньшей мере, одной электрической величины, содержащей электрический ток, протекающий в блоке электрооборудования, причем блок установлен на монтажной опоре, причем устройство отличается тем, что размещено в корпусе 1, имеющем по существу форму параллелепипеда с шириной, по существу равной ширине устройства защиты, и высотой, позволяющей разместить его между двумя линиями блоков оборудования, установленных и соединенных проводами в электрическом шкафу на рейках, разделенных стандартной высотой, и тем, что оно содержит некоторое количество сквозных отверстий (2, 3), образующих клеммы, ограниченные частью, изготовленной из изолирующего материала, причем данное количество соответствует количеству фаз блока оборудования, причем каждое из отверстий, образующих клеммы, выполнено с возможностью пропускания проводника, причем проводники выполнены с возможностью электрического подключения через один из своих концов соответственно к контактным полоскам (37) клемм блока оборудования, называемого первым блоком, и через их противоположный конец к электрическим контактным полоскам устройства, расположенного на стороне нагрузки или на стороне линии от первого блока оборудования и, по меньшей мере, для одной из клемм устройства, магнитный сердечник (8, 15, 20), по меньшей мере, частично окружающий клемму и содержащий, по меньшей мере, один воздушный зазор, вокруг которого, между двумя концевыми участками магнитного сердечника, ограничивающими воздушный зазор, намотана, по меньшей мере, одна измерительная катушка, называемая вторичной катушкой, причем катушка(и) выдает сигнал, характеризующий РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК G01R 1/00 (13) 2012 124 896 A (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2012124896/28, 14.06.2012 (71) Заявитель(и): ШНЕЙДЕР ЭЛЕКТРИК ЭНДЮСТРИ САС (FR) Приоритет(ы): (30) Конвенционный приоритет: 28.06.2011 FR 1101985 Адрес для переписки: 129090, Москва, ул ...

Evaluation Method for Burden Characteristics and Uncertainty for Potential Transformer

본 발명은 전압변성기(Potential Transformer, PT)의 비오차와 위상각 오차를 측정하기 위하여 전압변성기에 병렬로 연결되는 부담(Burden)의 부담값과 역률(Power factor)을 정확하게 측정하여 부담의 설계값을 용이하게 수정할 수 있으며, 측정의 불확도를 용이하게 평가할 수 있는 전압 변성기의 부담특성 자동 평가 시스템 및 평가방법에 관한 것으로서, 본 발명의 전압변성기용 부담 특성 자동평가시스템은, 전압변성기(Potential Transformer, PT)의 부담값에 대한 소정의 부담 전류를 만족시키는 일정 전압에서의 전류 공급 능력을 갖는 교류전압발생기와; 전압변성기의 비오차 및 위상각 오차를 정밀 측정하기 위하여 전압변성기에 병렬로 연결되는 부담이 수용된 부담상자와; 부담의 교류 전압, 전류, 전력 및 주파수를 측정하도록 부담에 연결된 전력 측정기; 및, 구동 프로그램이 탑재되어 전압 발생기 및 전력 측정기의 작동을 제어하고 부담의 특성을 평가하기 위한 측정자료를 사용하여 전압변성기의 부담의 부담값과 역률의 측정값, 명목치에 대한 상대오차 및 상대 불확도, 부담의 저항과 인덕턱스를 계산하여 평가보고서를 출력할 수 있도록 이루어진 시스템 제어기를 포함하여 이루어진다. 또한, 본 발명을 응용한 전류변성기(Current Transformer, CT)용 부담특성 자동 평가 시스템 및 평가방법도 포함한다. The present invention accurately measures the burden value and power factor of Burden connected in parallel to the voltage transformer in order to measure the non-error and phase angle error of the Potential Transformer (PT). The present invention relates to an automatic evaluation system and an evaluation method of burden characteristics of a voltage transformer capable of easily modifying and easily evaluating the uncertainty of measurement. An AC voltage generator having a current supply capability at a predetermined voltage that satisfies a predetermined burden current for the burden value of PT); A load box accommodating a load connected in parallel to the voltage transformer in order to accurately measure the error and phase angle error of the voltage transformer; A power meter connected to the load to measure the load's alternating voltage, current, power, and frequency; And a driving program mounted to control the operation of the voltage generator and the power meter and to use the measurement data for evaluating the characteristics of the load, using the load value of the voltage transformer, the measured value of the power factor, and the relative error and relative value of the nominal value. It includes a system controller configured to calculate the uncertainty, ...

An electrical instrument platform for mounting on and removal from an energized high voltage power conductor

本发明公开一种用于监控和测量高压电力导线的电、热和机械运行参数的装置。可以安装在通电导线上的环形外壳包括所有所需的电气仪器，以监控与导线相关联的参数。而且，该外壳包括处理能力，以基于这些参数分析扰动和故障事件。

Power measuring system, measuring apparatus, load terminal, and device control system

提供一种在设置工程时不需要由电气工程师等具有专业技能的人员进行工程的功率测量系统、测量装置、负载终端以及设备控制系统。电压传感器(2)以非接触的方式检测电灯线(1)的电压波形，电流传感器(3)以非接触的方式获取所述电灯线的电流波形。负载终端(8)的测量部(10)使触点单元(11)进行动作而将电灯线(1)与电压测量端子(12)进行连接，测量从电灯线(1)流过负载(13)的电流，根据得到的电流值和负载(13)算出电压值。当负载终端(8)的测量部(10)根据来自测量装置(4)的请求而经由通信单元(14)向测量装置(4)发送所测量的电流值和算出的电压值时，测量装置(4)的控制部(5)经由通信单元(6)从负载终端(8)接收电流值和电压值，根据该电流值和电压值、从电压传感器(2)获取的电压波形和从电流传感器(3)获取的电流波形算出功率值。

Compensating apparatus for a non-contact current sensor installing variation in two wire power cable

本发明是一种非接触式电流传感器安装位置变动补偿装置，其应用于双线电源线电流测量，包含有：一非接触式电流传感器，该非接触式电流传感器还包括有第一电流传感器、第二电流传感器、以及第三电流传感器，以用来测量双线电源线上电流变化所造成的空间磁场变化，其中，该非接触式电流传感器，设于一双线电源线上方位置(该双线电源线的两个电源线内径中心连线方向为一水平方向，与该水平方向相垂直的方向为一垂直方向)；一感测元件特性测量单元，其用于建立该非接触式电流传感器相应该双线电源线的空间特性测量数据库；以及一非接触电流测量模块，输出该双线电源线内的一待测电流I值。

END CONNECTOR FOR POWER CABLE

1. Концевое соединительное устройство для соединения конца силового кабеля среднего или высокого напряжения с точкой подключения, содержащее:a) интерфейсный кабель, имеющий первую и вторую оконечные части, содержащие внутренний проводник и проводящий или полупроводящий слой;b) первую выравнивающую напряженность электрического поля трубку, содержащую:- выравнивающий напряженность электрического поля элемент и- изолирующий слой, расположенный вокруг выравнивающего напряженность электрического поля элемента,при этом первая выравнивающая напряженность электрического поля трубка установлена на первой оконечной части интерфейсного кабеля;c) первый кабельный соединитель для соединения интерфейсного кабеля с силовым кабелем, при этом указанный первый кабельный соединитель соединен со второй оконечной частью интерфейсного кабеля;d) вторую выравнивающую напряженность электрического поля трубку, содержащую:- выравнивающий напряженность электрического поля элемент и- изолирующий слой, расположенный вокруг указанного выравнивающего напряженность электрического поля элемента, при этом вторая выравнивающая напряженность электрического поля трубка установлена поверх второй оконечной части интерфейсного кабеля и по меньшей мере части первого кабельного соединителя;e) одну или более одной трубчатых усаживаемых муфт,при этом по меньшей мере часть одной из трубчатых усаживаемых муфт выполнена протяженной поверх по меньшей мере части первой выравнивающей напряженность электрического поля трубки, и по меньшей мере часть одной из трубчатых усаживаемых муфт выполнена протяженной поверх по меньшей мере части второ РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2014 125 151 A (51) МПК H02G 15/184 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2014125151, 19.12.2012 (71) Заявитель(и): 3М ИННОВЕЙТИВ ПРОПЕРТИЗ КОМПАНИ (US) Приоритет(ы): (30) Конвенционный приоритет: 21.12.2011 EP 11194804.8; 21.06.2012 US 61/662,713 (85) Дата начала ...

Voltage detection printed circuit board and voltage detector using the same

A current and voltage detection printed board includes a board formed with a penetration hole; a first pattern wire formed at a periphery of the penetration hole; a second pattern wire formed at the periphery of the penetration hole; a plurality of first through holes that penetrate the board between the first and second pattern wires; a third pattern wire formed at the periphery of the penetration hole; a fourth pattern wire formed at the periphery of the penetration hole; and a plurality of second through holes that penetrate the board between the third and fourth pattern wires.

A Combined Electrical Measurement Device

전기 전도체의 전류 및/또는 전압을 측정하기 위한 복합 측정 장치에 있어서, 상기 장치는 지지 몸체, 지지 몸체 내에 수용된 전류 센서, 그리고 지지 몸체 내에 일부 또는 전부가 위치한 전압 센서를 포함한다. 차폐물이 전류 센서 둘레에 배치된다. 전류 센서 및 전압 센서는 상호 간에, 외부 전기장 방해 요소에 대해 전류 센서 및 전압 센서를 차폐시키는 차폐물로 배열된다. A composite measuring device for measuring the current and / or voltage of an electrical conductor, the device comprising a support body, a current sensor housed in the support body, and a voltage sensor in which some or all of the voltage sensor is located within the support body. A shield is disposed around the current sensor. The current sensor and the voltage sensor are mutually arranged as a shield for shielding the current sensor and the voltage sensor against external electric field disturbance elements.

Electric multimeter

FIELD: instrumentation. SUBSTANCE: multimeter 100 to measure electric conductor current and voltage comprises bearing case 101, current transducer 5 arranged there inside and voltage transducer arranged at least partially therein. Protective screen 11 surrounds said current transducer 5. Said transducers are arranged to make said screen 11 shielding, at least partially, said both transducers from interferences of external electric fields. EFFECT: perfected multimeter. 15 cl, 11 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 508 554 (13) C2 (51) МПК G01R 19/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2011101680/28, 12.06.2009 (24) Дата начала отсчета срока действия патента: 12.06.2009 (72) Автор(ы): ЯВОРА Радек (CZ), КРАЛ Петр Й. (CZ) (73) Патентообладатель(и): АББ ТЕКНОЛОДЖИ АГ (CH) R U Приоритет(ы): (30) Конвенционный приоритет: 19.06.2008 EP 08158592.9 (43) Дата публикации заявки: 27.07.2012 Бюл. № 21 2 5 0 8 5 5 4 (45) Опубликовано: 27.02.2014 Бюл. № 6 (56) Список документов, цитированных в отчете о поиске: FR 2698695 A1, 03.06.1994. US 4999571 A, 12.03.1991. RU 2298800 C1, 10.05.2007. RU 2100811 C1, 27.12.1997. 2 5 0 8 5 5 4 R U (86) Заявка PCT: EP 2009/057312 (12.06.2009) C 2 C 2 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 19.01.2011 (87) Публикация заявки РСТ: WO 2009/153223 (23.12.2009) Адрес для переписки: 129090, Москва, ул.Б.Спасская, 25, стр. 3, ООО "Юридическая фирма Городисский и Партнеры" (54) КОМБИНИРОВАННОЕ ЭЛЕКТРИЧЕСКОЕ ИЗМЕРИТЕЛЬНОЕ УСТРОЙСТВО (57) Реферат: Заявленное изобретение относится к комбинированным измерительным устройствам для измерения тока и/или напряжения электрического проводника. Техническим результатом заявленного изобретения является создание усовершенствованного измерительного устройства. Технический результат достигается благодаря тому, что комбинированное измерительное устройство (100) для измерения тока и/или напряжения электрического ...

Data collecting connection

Disclosed herein is an apparatus. The apparatus includes a first body, a second body, and an electronic circuit. The first body includes a first end, a second end, and a middle section. The first body further includes a first conductor receiving area and a recessed cavity. The first receiving area extends from the first end to the second end. The cavity is at the middle section. The second body is adapted to be removably connected to the first body. The second body includes a first end, a second end, and a second conductor receiving area. The second conductor receiving area extends from the first end to the second end. The apparatus is adapted to receive an electrical conductor between the first receiving area and the second receiving area. The electronic circuit is at the cavity. The electronic circuit is configured to receive reference information corresponding to the electrical conductor.

Transmission line measuring device and method for connectivity and monitoring

A method for connecting low power radios into a self-assembling and self-healing network with multiple portals to higher speed networks such as, but not limited to, electrical or optical Ethernet is provided for monitoring transmission lines, for example. A clamp or other device is provided that includes an integral or associated current transformer and associated circuitry with design elements to address high temperature operation or other operating parameters. An arrangement of sensors is provided (e.g., sensors can be associated with clamps or positioned along infrastructure being monitored and without dependence on any clamps or other devices) that are designed to communicate and operate in an geographically distributed array to provide increased and autonomous monitoring of large utility, highway, communication and similar networks. A unique collection of sensors (e.g., an anemometer with no moving parts) provides comprehensive diagnostics for improved operation of large geographic scale utility, highway, communication and similar infrastructure.

Data collecting connection

Disclosed herein is an apparatus. The apparatus includes a first body, a second body, and an electronic circuit. The first body includes a first end, a second end, and a middle section. The first body further includes a first conductor receiving area and a recessed cavity. The first receiving area extends from the first end to the second end. The cavity is at the middle section. The second body is adapted to be removably connected to the first body. The second body includes a first end, a second end, and a second conductor receiving area. The second conductor receiving area extends from the first end to the second end. The apparatus is adapted to receive an electrical conductor between the first receiving area and the second receiving area. The electronic circuit is at the cavity. The electronic circuit is configured to receive reference information corresponding to the electrical conductor.

Transmission line measuring device and method for connectivity and monitoring

A method for connecting low power radios into a self-assembling and self-healing network with multiple portals to higher speed networks such as, but not limited to, electrical or optical Ethernet is provided for monitoring transmission lines, for example, or other monitoring application. An arrangement of sensors is provided (e.g., sensors can be associated with clamps or positioned along infrastructure being monitored and without dependence on any clamps or other devices) that are designed to communicate and operate in an geographically distributed array to provide increased and autonomous monitoring of large utility, highway, communication and similar networks. A unique collection of sensors (e.g., an anemometer with no moving parts) provides comprehensive diagnostics for improved operation of large geographic scale utility, highway, communication and similar infrastructure.

Transmission line measuring device and method for connectivity and monitoring

A method for connecting low power radios into a self-assembling and self-healing network with multiple portals to higher speed networks such as, but not limited to, electrical or optical Ethernet is provided for monitoring transmission lines, for example, or other monitoring application. An arrangement of sensors is provided (e.g., sensors can be associated with clamps or positioned along infrastructure being monitored and without dependence on any clamps or other devices) that are designed to communicate and operate in an geographically distributed array to provide increased and autonomous monitoring of large utility, highway, communication and similar networks. A unique collection of sensors (e.g., an anemometer with no moving parts) provides comprehensive diagnostics for improved operation of large geographic scale utility, highway, communication and similar infrastructure.

Power measuring system, measuring apparatus, load terminal, and device control system

提供一种在设置工程时不需要由电气工程师等具有专业技能的人员进行工程的功率测量系统、测量装置、负载终端以及设备控制系统。电压传感器(2)以非接触的方式检测电灯线(1)的电压波形，电流传感器(3)以非接触的方式获取所述电灯线的电流波形。负载终端(8)的测量部(10)使触点单元(11)进行动作而将电灯线(1)与电压测量端子(12)进行连接，测量从电灯线(1)流过负载(13)的电流，根据得到的电流值和负载(13)算出电压值。当负载终端(8)的测量部(10)根据来自测量装置(4)的请求而经由通信单元(14)向测量装置(4)发送所测量的电流值和算出的电压值时，测量装置(4)的控制部(5)经由通信单元(6)从负载终端(8)接收电流值和电压值，根据该电流值和电压值、从电压传感器(2)获取的电压波形和从电流传感器(3)获取的电流波形算出功率值。

Fault sensor device with radio transceiver

A method and a fault sensor device (1) which can detect and distinguish abnormal current and voltage events on an alternating current overhead and underground transmission line or distribution line (2). The fault sensor device (1) is contained in an elongated molded plastic housing (4), The fault sensor device (1) includes a current sensor (12) and a voltage sensor (14) connected in proximity to the transmission or distribution line (2) for monitoring current and voltage analog signals; an analog-to-digital converter (22) connected to the current and voltage sensors (12,14) for sampling the current and voltage analog signals and producing: corresponding digital signals; a processor (11) responsive to the digital signals for detecting an abnormal condition and distinguishing whether any of a plurality of types of faults has occurred; and a transmitter (3) for transmitting the fault information from the processor (11) to a remote location.

Feedthrough insulator

FIELD: electrical engineering. SUBSTANCE: invention relates to a feed-through insulator for electric transformers, distribution boxes, etc. Insulator consists of central connecting rod (10) extending along longitudinal axis (10y), from sleeve (20) coaxial to and surrounding central connecting rod (10) and comprising cylindrical shell (21), radially spaced (D-21) with respect to central connecting rod (10) and comprising internal surface (22), from sensor (30) of electric field and/or of magnetic field, positioned within inner surface (22) of cylindrical shell (21) of sleeve (20), and carrying body (40) formed by dielectric material able to contain and to embed said central connecting rod (10), sleeve (20) and sensor (30) of electrical field and/or of magnetic field, wherein on central connecting rod there is at least one screening element (161, 162/261, 262/361, 362). EFFECT: invention enables to create an insulator, which allows measurement of electric and/or magnetic fields, created by under voltage conductor in the form of connecting rod. 17 cl, 4 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 603 350 C2 (51) МПК H01B 17/26 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2014108205/07, 25.07.2012 (24) Дата начала отсчета срока действия патента: 25.07.2012 (72) Автор(ы): БАУЭР Альберто (US) (73) Патентообладатель(и): ГРИН СИЗ ВЕНЧУРЗ, ЭЛТИДИ (VG) Приоритет(ы): (30) Конвенционный приоритет: R U 05.08.2011 US 61/574,565 (43) Дата публикации заявки: 10.09.2015 Бюл. № 25 (45) Опубликовано: 27.11.2016 Бюл. № 33 2 6 0 3 3 5 0 (56) Список документов, цитированных в отчете о поиске: EP0510426A2, 28.10.1992. EP2264719 A1, 22.12.2010. DE4315772 A1, 10.11.1994. RU2160477 C2, 10.12.2000. (85) Дата начала рассмотрения заявки PCT на национальной фазе: 05.03.2014 (86) Заявка PCT: 2 6 0 3 3 5 0 R U (87) Публикация заявки PCT: C 2 C 2 IT 2012/000231 (25.07.2012) WO 2013/021402 (14.02.2013) Адрес для переписки: ...

RF sensor clamp assembly

A clamp assembly for bringing an RF sensor into electrical contact with an RF current carrier is provided herein. The clamp assembly ( 101 ) comprises a first wedge-shaped element ( 103 ), and a second wedge-shaped element ( 105 ) which is slidingly engaged with said first wedge-shaped element. Preferably, the clamp assembly also comprises a collar ( 113 ) within which the first and second wedge-shaped elements are disposed. The clamp assembly preferably further comprises a fastener ( 111 ), such as a screw, which adjoins the first and second elements, in which case the clamp assembly is adapted such that, as the screw is rotated in a first direction, at least one of the first and second elements expands against the collar and/or the RF current carrier.

Measurement apparatus and include the electrical appliance of this measurement apparatus

一种测量装置，所述装置被收纳于壳体中，该壳体具有平行六面体的形状并且其宽度大体上与保护设备的宽度相同，并包括一定数量的通过孔，该通过孔形成端子，通过由绝缘材料制成的部件限定，所述通过孔形成端子的数量与设备单元的相数量相关，所述通过孔形成端子被设计成每个通过孔由一个导体穿过，所述导体被设计成通过其一个末端电连接至第一设备单元的端子接触板，并且通过相对的末端连接至位于所述第一设备单元的负载侧或线路侧的设备的电接触板，对于装置的至少一个端子来说，磁芯至少部分围绕所述端子并且包括至少一种气隙，围绕该气隙次级线圈在限定所述气隙的磁芯的两个末端部分之间缠绕，所述线圈传递代表设备中流通的电流的信号。

Device for measuring electrical energy supplied to railroad power traction plant

FIELD: electricity. SUBSTANCE: measuring device of electrical energy supplied to railroad traction plant through high voltage line (1) includes the following: supply current load measuring devices (5, 26) and device (12, 27) for measuring the voltage of that power supply, optic electronic inverters (22a, 22b) for low voltage supply required for operation of the above measuring devices; at that, the above optic electronic inverters (22a, 22b) are connected through optic fibres (21a, 21b) to electrooptical transducer (20) for them to be connected to supply voltage, and outputs of measuring devices includes optic fibres (9, 19) connected to optoelectronic transducer (10) for them to be connected to electronic system. At that, measuring devices are installed in insulator (25) through which high voltage line (L) of locomotive roof passes; at that, high voltage environment is arranged in upper cavity (28) made in insulator (25), and low voltage environment is arranged in lower cavity (29) of that insulator, and connections between various elements of the device are performed between those two cavities through the above optic fibres. EFFECT: decreasing dimensions of the device. 2 cl, 2 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 452 972 (13) C2 (51) МПК G01R 31/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2007128529/28, 24.07.2007 (24) Дата начала отсчета срока действия патента: 24.07.2007 (73) Патентообладатель(и): АЛЬСТОМ ТРАНСПОРТ СА (FR) (43) Дата публикации заявки: 27.01.2009 Бюл. № 3 2 4 5 2 9 7 2 (45) Опубликовано: 10.06.2012 Бюл. № 16 (56) Список документов, цитированных в отчете о поиске: WO 2004072662 А2, 26.08.2004. DE 19543363 А1, 28.05.1997. FR 2698695 А1, 03.06.1994. DE 10005164 A1, 09.08.2001. 2 4 5 2 9 7 2 R U (54) УСТРОЙСТВО ИЗМЕРЕНИЯ ЭЛЕКТРИЧЕСКОЙ ЭНЕРГИИ, ПОДАВАЕМОЙ НА ЖЕЛЕЗНОДОРОЖНУЮ СИЛОВУЮ ТЯГОВУЮ УСТАНОВКУ оптические волокна (9, 19), соединенные с оптико-электронным ...

Device for measuring electric current flowing in unit of electrical equipment, enabling measurement of power and unit of electrical equipment, including said device

FIELD: instrumentation; data processing. SUBSTANCE: invention relates to metrology. Sensor is installed in body of insulating material, its width is equal to width of protective device, and height makes it possible to install sensor in standard rack mounting board. Device comprises through holes to supply conductors to terminals of current measurement device. Sensitive element used is a magnetic current sensor, which comprises a magnetic core, surrounding terminal, an air gap, around which, between two end sections of magnetic core restricting air gap, a measurement coil is wound. Device also comprises a second measurement coil. Core is made up of parts made of nanocrystalline material or material with chemical composition FeSi or FeNi. Said core consists of I-shaped parts, each configured to direct magnetic flux into appropriate air gap. Ends of branches of I-shaped parts are designed to shut off coil. EFFECT: providing compact design while maintaining preset accuracy requirements, compensation of external magnetic fields. 18 cl, 14 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 594 365 C2 (51) МПК G01R 19/00 (2006.01) G01R 15/18 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2012124896/28, 14.06.2012 (24) Дата начала отсчета срока действия патента: 14.06.2012 (72) Автор(ы): МОЛИТОН Вивьен (FR), БЮФФА Себастьен (FR) 28.06.2011 FR 1101985 (43) Дата публикации заявки: 20.12.2013 Бюл. № 35 R U (73) Патентообладатель(и): ШНЕЙДЕР ЭЛЕКТРИК ЭНДЮСТРИ САС (FR) Приоритет(ы): (30) Конвенционный приоритет: (45) Опубликовано: 20.08.2016 Бюл. № 23 C 2 2 5 9 4 3 6 5 (54) УСТРОЙСТВО ДЛЯ ИЗМЕРЕНИЯ ЭЛЕКТРИЧЕСКОГО ТОКА, ПРОТЕКАЮЩЕГО В БЛОКЕ ЭЛЕКТРООБОРУДОВАНИЯ, ПОЗВОЛЯЮЩЕЕ ОСУЩЕСТВЛЯТЬ ИЗМЕРЕНИЕ МОЩНОСТИ И БЛОК ЭЛЕКТРООБОРУДОВАНИЯ, СОДЕРЖАЩИЙ ДАННОЕ УСТРОЙСТВО (57) Реферат: Изобретение относится к метрологии. Датчик содержит вторую измерительную катушку. размещен в корпусе из изолирующего материала, Сердечник набран ...

Metering out fit

본 발명은 고체 절연 스위치기어에 접속 사용하기에 적합한 계기용 변압 변류기로서 인입 전력의 접속이 전기적으로 절연될 수 있는 계기용 변압 변류기를 제공하려는 것으로, 본 발명에 따라서 계기용 변압 변류기에 있어서, 전기적 절연성을 갖는 금형 물로 구성되는 외함; 상기 외함 내에 매입되어 전기적으로 절연되는 상태에서 외부 전력을 인입하는 인입 인터페이스(interface) 부; 상기 외함 내에 매입되어 상기 인입 인터페이스 부로 인입된 외부 전력의 전압을 강압하여 계측용 전압으로서 제공하는 계기용 변압기; 상기 외함 내에 매입되어 상기 인입 인터페이스 부로 인입된 외부 전력의 전류에 비례한 계측용 전류신호를 출력으로서 제공하는 계기용 변류기; 및 상기 계기용 변압기 및 상기 계기용 변류기에 전기적으로 접속되어, 상기 계측용 전압 및 계측용 전류신호를 출력하는 2차 단자를 포함하여 구성되는 것을 특징으로 하는 계기용 변압 변류기가 개시된다. 고체 절연 스위치기어, 계기용 변압 변류기, MOF(METERING OUT FIT), 절연

PASS INSULATOR

1. Проходной изолятор, состоящий из центрального соединительного стержня (10), установленного вдоль продольной оси (10у), из втулки (20), расположенной соосно вокруг центрального соединительного стержня (10) и содержащей цилиндрический кожух (21), расположенный в радиальном направлении с промежутком (D-21) относительно центрального соединительного стержня (10) и содержащий внутреннюю поверхность (22), из датчика (30) электрического и/или магнитного поля, расположенного в зоне внутренней поверхности (22) цилиндрического кожуха (21) втулки (20), и из несущего корпуса (40), выполненного из диэлектрического материала с возможностью установки и размещения в нем центрального соединительного стержня (10), втулки (20) и датчика (30) электрического и/или магнитного поля.2. Изолятор по п.1, который включает проводник (50) соединения с внешним устройством (51), при этом несущий корпус (40) содержит внешнюю поверхность (41), на которой установлено внешнее устройство (51), а проводник (50) установлен с возможностью соединения датчика (30) электрического и/или магнитного поля с внешним устройством (51).3. Изолятор по п.1, в котором втулка (20) выполнена с продольной протяженностью (L-20), а датчик (30) электрического и/или магнитного поля расположен в промежуточной точке названной продольной протяженности (L-20).4. Изолятор по п.1, в котором втулка (20) выполнена с продольной протяженностью (L-20), при этом упомянутая протяженность (L-20) выполнена длиной, способной предотвращать воздействие вредных нежелательных линий напряженности электрического поля, создаваемых окружающими проводниками в закрытом пространстве, на датчик (30) электрического и/или магнитного поля.5. Изолятор по � РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК H01B 17/00 (13) 2014 108 205 A (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2014108205/07, 25.07.2012 (71) Заявитель(и): ГРИН СИЗ ВЕНЧУРЗ, ЭЛТИДИ (VG) Приоритет(ы): (30) Конвенционный приоритет: (72 ...

Non-contact voltage transducer

一种用于确定电力电缆电压的传感器，包括：构造成耦合在所述电力电缆的至少一部分周围的壳体。由壳体支撑的第一导电元件构造成当壳体耦合在电力电缆的至少一部分周围时电耦合到电力电缆。由壳体支撑的第一电容元件与第一导电元件电互连。由壳体支撑的第二电容元件与第一导电元件电互连。处理器基于交替地感测：(i)第一电容元件和第二电容元件的电特性，和(ii)没有第二电容元件的第一电容元件的电特性，来确定电力电缆的电缆电容。传感器根据确定的电缆电容确定电力电缆的电压。

Distributing board with opening and opening risk monitoring function on secondary side of current transformer

A distributing board with an opening and opening risk monitoring function on a secondary side of a current transformer includes: a voltage reducer connected to opposite terminals of the secondary side of the current transformer and configured to output a reduced voltage by reducing the terminal voltage of the secondary side of the current transformer; a first shunt regulating unit that has a predetermined reference voltage and compares the reduced voltage and the first reference voltage to be turned on when the reduced voltage is higher than the first reference voltage and outputs a first shut voltage; a first photo coupler connected to an output terminal of the first shunt regulating unit to output a first detection signal by using an optical signal as the first shunt voltage is provided by the first shunt regulating unit; a second shunt regulating unit that has a predetermined second reference voltage that is higher than the first reference voltage and compares the reduced voltage and the second reference voltage to be turned on when the reduced voltage is higher than the second reference voltage and outputs a second shunt voltage; a second photo coupler connected to an output terminal of the second shunt regulating unit to output a second detection signal by using an optical signal as the second shunt voltage is provided by the second shunt regulating unit; and a control unit configured (i) to determine that the secondary side terminal of the current transformer is in an open risk state if only the first detection signal is provided and output a first control signal, and (ii) determine that the secondary side terminal of the current transformer is in an open state if both the first detection signal and the second detection signal are provided and output a second control signal. Accordingly, a very rapid response speed can be achieved.

Methods and apparatus for determining conditions of power lines

Techniques for determining conditions of power lines in a power distribution system based on measurements collected by a plurality of sensor units deployed in the power distribution system. Techniques include obtaining first transformed data associated with a first set of one or more measurements collected by a first sensor unit in the plurality of sensor units and second transformed data associated with a second set of one or more measurements collected by a second sensor unit in the plurality of sensor units, and determining, by using at least one processor and based at least in part on one or more features calculated from the first transformed data and the second transformed data, at least one condition of at least one power line in the power distribution system.

Power extraction for a medium voltage sensor using a capacitive voltage divider

A sensor unit coupled to a first wire of a power line for measuring power-related parameters of the power line. The sensor unit contains a first capacitor and makes voltage measurements relative to another wire, to which the sensor unit is coupled by a second capacitor. The captors form a voltage divider such that the sensor unit may measure a voltage in a range much lower than the voltage on the power line. Additionally, the capacitive voltage divider yields a voltage that can be used to power the sensor unit, including by charging an energy storage device. The sensor unit may also supply power to other nearby devices, such as other devices that form a mesh sensor network.