АВТОНОМНОЕ МОБИЛЬНОЕ УСТРОЙСТВО ДЛЯ ГЕНЕРИРОВАНИЯ, АККУМУЛИРОВАНИЯ И РАСПРЕДЕЛЕНИЯ ЭЛЕКТРОЭНЕРГИИ

Изобретение относится к области электротехники, в частности к автономному мобильному устройству (1), предназначенному для генерирования, аккумулирования и распределения электроэнергии. Технический результат заключается в повышении надежности электроснабжения потребителей. Устройство содержит средства (2) генерирования электроэнергии, в частности, фотоэлектрические панели (20), покоящиеся, по меньшей мере, на одном опорном элементе (3), таком как стандартный грузовой контейнер (31, 32). В последнем заключены внутренние средства (6) аккумулирования электроэнергии, генерируемой указанными средствами (2) генерирования, причем указанный опорный элемент (3) также включает в себя средства преобразования сигналов, поступающих от средств (2) генерирования, в сигналы, обеспечивающие возможность снабжения электроэнергией средств аккумулирования электроэнергии; и, по меньшей мере, один электрический соединитель (8), предназначенный для подключения внешних устройств аккумулирования электроэнергии. В ...

СИСТЕМА И СПОСОБ ПЛАВНОГО ПЕРЕКЛЮЧЕНИЯ ДЛЯ МИКРОЭНЕРГОСИСТЕМЫ

FIELD: electricity. SUBSTANCE: system and method of smooth switching for a micro-power system are presented. The method includes the steps of collecting the values of the various phase voltages on the side of the connected power system by the first voltage collection module; determining the loss factor of the current voltage value of each phase voltage relative to the standard value by PCS and counting the total number of cases when the loss factors of the various phase voltages are lower than the predetermined value; and if the PCS estimates that the value of this total is greater than the threshold value, then V/F-switching and simultaneous facilitating of the PCC switch disconnection between the power system connected to it and the micro-power system. EFFECT: providing smooth switching with low current pulses when disconnected from the power system. 6 cl, 11 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 629 747 C2 (51) МПК H02J 9/06 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2015151610, 27.11.2014 (24) Дата начала отсчета срока действия патента: 27.11.2014 Дата регистрации: (73) Патентообладатель(и): ЧАЙНА ЭксДи ЭЛЕКТРИК КО., ЛТД (CN) Приоритет(ы): (30) Конвенционный приоритет: 24.12.2013 CN 201310722452.6 (45) Опубликовано: 01.09.2017 Бюл. № 25 (56) Список документов, цитированных в отчете о поиске: CN 103023132 A, 03.04.2013. SU 1647765 A1, 07.05.1991. CN 102709946 A, 03.10.2012. CN 103427430 A, 04.12.2013. US 8269374 B2, 18.09.2012. (85) Дата начала рассмотрения заявки PCT на национальной фазе: 02.12.2015 (86) Заявка PCT: CN 2014/092365 (27.11.2014) (87) Публикация заявки PCT: 2 6 2 9 7 4 7 (43) Дата публикации заявки: 13.06.2017 Бюл. № 17 R U 01.09.2017 (72) Автор(ы): ЛЮ Чжицян (CN), ЧЖАН Дуншэн (CN), СУ Вэйфэн (CN), ВЭЙ Саньминь (CN), ГОУ Жуйфэн (CN) 2 6 2 9 7 4 7 R U Адрес для переписки: 129090, Москва, ул. Большая Спасская, д. 25, строение 3, ООО "Юридическая фирма Городисский и ...

Verfahren zum Betreiben eines Blockheizkraftwerks (BHKW)

Die Erfindung betrifft ein Verfahren zum Betreiben eines Blockkraftheizwerks, welches umfasst:- eine Brennkraftmaschine (2), die eine Abtriebswelle (3) und einen Abgasstrang (16) aufweist,- einen Heizkreislauf (4), in welchem wenigstens ein thermischer Verbraucher (20) angeordnet ist, und welcher über einen (ersten) Wärmeübertrager thermisch mit dem Abgasstrang (16) der Brennkraftmaschine (2) verbunden ist,- einen ersten elektrischen Generator (7a) und einen galvanisch vom ersten Generator (7a) getrennten elektrischen Generator (7b),- wobei gemäß dem Verfahren wenigstens einer der beiden Generatoren (7a, 7b) mit der Brennkraftmaschine (2) antriebsverbunden ist,- wobei gemäß dem Verfahren der erste Generator (7a) elektrisch mit einem öffentlichen Stromnetz (15) verbunden ist und für dieses elektrischen Strom erzeugt,- wobei gemäß dem Verfahren der zweite Generator (7b) elektrisch mit einem galvanisch vom öffentlichen Stromnetz (15) getrennten Eigenversorgungsstromnetz (14) verbunden ist ...

A high voltage AC transmission system and a method for preventing/reducing overvoltage at an offshore plant

An AC transmission system (1) for power transmission to an offshore plant, such as an offshore platform for oil/gas extraction, comprises an onshore power station (2) to transmit electric power, an offshore plant (3) to receive electric power, and a submarine cable (4) connecting the onshore power station (2) to the offshore plant (3). The system further comprises at least one pipeline (5) provided with an electrical heating system (6), where the electrical heating system (6) is adapted to be connected to the onshore power station (2) through the submarine cable (4) when a significant power load drop or a significant overvoltage is detected or anticipated. In this way, induced overvoltage at the offshore platform may be prevented or reduced when there is a sudden load drop at the offshore platform.

PROCEDURE AND SYSTEM FOR THE REAL TIME CURRENT CONSUMPTION ADMINISTRATION AND - MODULATION

Control device and control method for direct-current micro-grid, and direct current micro-grid system

Provided are a control device and control method for a direct-current micro-grid, and a direct-current micro-grid system. The control device for a direct-current micro-grid comprises: a detection module (100) for detecting a voltage change ratio on a direct-current bus; and a regulation module (200) for regulating energy compensation of an energy compensation apparatus for the direct-current bus according to the voltage change ratio, detected by the detection module, on a direct-current bus. The control device for the direct-current micro-grid detects, by means of a detection module, a voltage change on a direct-current bus in real time, and a control module regulates, according to a detection result of the detection module, energy compensation of an energy compensation apparatus for the direct-current bus in real time, thereby improving the stability of the voltage on the direct-current bus, and thus making the direct-current micro-grid operate stably.

Nested microgrid control system

Unique systems, methods, techniques and apparatuses of a power grid control system. One exemplary embodiment is a nested microgrid system comprising a first microgrid including a network controller, a second microgrid, a third microgrid, a first restoration path selectively coupled between a second portion of the first microgrid and the second microgrid, and a second restoration path selectively coupled between the second portion of the first microgrid and the third microgrid. The network controller is configured isolate the first portion of the first microgrid from the second portion of the first microgrid, calculate weighting factors for the first and second restoration paths, select the first restoration path using the first weighting factor and the second weighting factor, and couple the second portion of the first microgrid to the second microgrid using the first restoration path.

Distributed energy resource management system

A power distribution and control system for use with a bulk generation system having transmission and distribution systems, the power distribution and control system including a plurality of microgrids each including a power generation element and a load, a plurality of microgrid controllers each associated with one and only one of the plurality of microgrids, and a first communication network. A high-level controller is operable using the first communication network to communicate with the bulk generation system and each of the plurality of microgrid controllers, the high-level controller operable to coordinate the operation of the microgrids during normal system operation. A second communication network is separate from the first communication network, the second communication network providing peer to peer communication between each of the plurality of microgrid controllers when at least one of the high-level controller and the first communication network is not available, and a plurality ...

Controlling power in a micro-grid

A method and system (17) for controlling electrical power in a micro-grid (1), especially during islanding when the micro-grid is disconnected from a main grid (3) is described. A potential load shedding for islanding is determined when the micro grid is connected to the main grid. The potential load shedding is performed when a grid switch (9) that connects the micro-grid to a main grid (3) opens. A frequency based load shedding and a frequency based control of power injections to the micro grid (1) may also be performed. The frequency based load shedding is performed with a faster response than the power injection control during islanding. The frequency based power injection control is performed with a faster response than the frequency based load shedding when the micro grid (1) is connected to the main grid (3). A load shedding controller (19), an energy storage controller (18) and methods performed by the load shedding controller, and the energy storage controller, respectively, is ...

Operation of a local AC power supply system with a genset and a UPS

To operate a local AC power supply system (1) with a genset (6), which comprises an internal combustion engine (8) and a generator (7), and an uninterruptible power supply (USV) (2), which comprises an energy store (15), the genset (6) is controlled to a setpoint frequency by using the genset (6) to respond to deviations in a frequency of an AC voltage of the AC power supply system (1) from the setpoint frequency with a power increase in one direction and with a power reduction in the other direction. The frequency of the AC voltage applied to the genset (6) by the AC power supply system (1) is prescribed using the UPS (2), the frequency of the AC voltage prescribed using the UPS (2) being changed in one direction away from the setpoint frequency if the present power demand rises above a present power supply in the AC power supply system (1) and being changed in the other direction if the present power demand falls below the present power supply in the AC power supply system (1). When the ...

Grid tied, real time adaptive, distributed intermittent power

Utility customers' intermittent power generation systems are made autonomously real time adaptive at the customer circuit level, so each of the customers' circuits contributes, at that customer's common connection to the utility meter, to the utility's desired outcome for that customer's circuit, or contributes, at the intermediate circuit level, to the utility's desired aggregate outcomes for customers on that intermediate circuit. Energy management controllers are connected, behind the customer's utility meter to controlled load portions of that customer's varying load, to autonomously add or shed, in real time, those controlled load portions, or (if there is stored energy) to autonomously discharge, in real time, stored power from storage. Utility rules for achieving desired outcomes can be downloaded to the controllers and customers can individually opt-in to some, all, or none, of those utility rules. Real time means within sub second to fifteen second intervals.

CONTROL OF FUEL FLOW FOR POWER GENERATION BASED ON DC LINK LEVEL

A power generating unit, control unit and modular power generating system. A power generating unit includes an engine-generator set including an engine that produces mechanical power and a generator mechanically coupled to the engine. The generator converts the mechanical power to electrical power provided to a DC link. The control unit includes at least one controller configured to control fuel flow to the engine based on a voltage of the DC link.

METHOD AND SYSTEM OF REAL TIME MANAGEMENT AND MODULATION OF ELECTRICITY CONSUMPTION

L'invention concerne un procédé de gestion et de modulation en temps réel de la consommation électrique d'un ensemble de consommateurs, qui comprend les étapes suivantes: mesure en temps réel de la consommation électrique d'u ne pluralité d'ensembles ciblés d'équipements électriques en fonctionnement, chaque ensemble d'équipements étant situé chez un consommateur, la mesure d e la consommation de ces équipements étant effectuée au moyen d'un boîtier d e régulation électrique situé chez le consommateur; transmission par lesdits boîtiers des mesures de consommation vers un serveur central; si une consig ne globale, à un moment donné, indique d'effacer une certaine puissance tota le, envoi par ledit serveur, vers certains desdits boîtiers, de l'ordre de c ouper sélectivement et temporairement l'alimentation électrique des équipeme nts électriques; réception et exécution par ces boîtiers de l'ordre envoyé p ar ledit serveur. L'invention concerne aussi un système adapté à ce procédé.

SYSTEMS AND METHODS FOR ERROR MONITORING AND HANDLING IN CONTROL SYSTEMS

In a first embodiment, a system for controlling a microgrid includes a processor-based control system. The control system is configured to receive information via a communications pathway from at least one microgrid asset within a microgrid system and identify one or more errors associated with an operation of the microgrid system. In addition, the control system is configured to respond to the one or more identified errors with one or more actions. Each identified error from the one or more identified errors is associated with at least one action from the one or more actions. Further, control system is configured to generate an optimal dispatch schedule having one or more control signals configured to control the microgrid operation to reduce cost and to improve an operational efficiency of the microgrid. The optimal dispatch schedule is based at least in part on the response to the one or more identified errors.

Verfahren zum Kauf und Verkauf von Herkunftsnachweisen von elektrischer Energie.

Ein Verfahren für den Kauf und Verkauf von Herkunftsnachweisen von Energie aus erneuerbaren Energiequellen umfasst eine Registrierung von Energiezählern (2) zum Zählen von elektrischer Energie aus erneuerbarer Energiequellen (1), die Speicherung von Energiedaten des Zählers (2) in einer Cloud und Generierung von Energie-Zertifikaten (6), die einen ersten Hash-Wert (6a) enthalten aus einem einmaligen Code für die Zähler (2) und den Energiedaten der Zähler (2). Die Energie-Zertifikate (6) werden in einer Plattform Verbrauchern zum Kauf angeboten, wobei bei einem Kauf ein Derivat-Zertifikat (8a, 8b) erstellt wird, das einen zweiten Hash-Wert (9a, 9b) enthält, der aus dem ersten Hash-Wert (6a) und den Daten des Zählers sowie des Verbrauchers erstellt wird. Das Derivat-Zertifikat (8a, 8b) gewährt einen fälschungssicheren Nachweis für die Herkunft, Ort, Zeit und Typ der gekauften erneuerbaren Energie. Das Verfahren ermöglicht eine erhöhte Transparenz in einem Markt für erneuerbare Energie und ...

SWITCHGEAR LOAD SHARING FOR OIL FIELD EQUIPMENT

A hydraulic fracturing system for fracturing a subterranean formation is disclosed. In an embodiment, the system may include a plurality of electric pumps fluidly connected to a well associated with the subterranean formation and powered by at least one electric motor, and configured to pump fluid into a wellbore associated with the well at a high pressure so that the fluid passes from the wellbore into the subterranean formation and fractures the subterranean formation; at least one generator electrically coupled to the plurality of electric pumps so as to generate electricity for use by the plurality of electric pumps; and at least one switchgear electrically coupled to the at least one generator and configured to distribute an electrical load between the plurality of electric pumps and the at least one generator.

System and method of power control for an energy storage charging station

A system includes a control unit having a processor and a communication interface. The communication interface is configured to communicate with one or more charging stations that are electrically coupled to receive electrical power from a power distribution grid and that are configured to selectively charge one or more energy storage devices connected to the charging stations. The processor is configured to generate first control signals for communication by the communication interface to the one or more charging stations to control transfer of reactive and/or active power from the charging stations to the power distribution grid. The control signals are generated based at least in part on a load cycle profile of one or more electric machines electrically coupled to the power distribution grid.

DC/AC CONVERTER APPARATUS COMPRISING MEANS FOR CONTROLLING THE REACTIVE POWER AND POWER CONVERSION AND GENERATION SYSTEM COMPRISING SUCH DC/AC CONVERTER APPARATUS

DC/AC converter apparatus, for converting DC power of a DC energy source into AC power for supplying a load and or the utility grid, adapted to automatically control the amount of both active and reactive electrical power that is exchanged with the utility grid in order to optimize the electrical power usage of the micro grid.

Charging and discharging of DC microgrid energy storage

A DC building electrical system includes a DC power consuming device connected to a DC bus. A source of DC power is connected to the DC bus and powers the DC power consuming device. An energy storage device is connected to the DC bus and to a DC emergency load. The energy storage device powers the DC power consuming device in conjunction with the source of DC power, and powers the DC emergency load when source of power other than the energy storage device is available to the DC power consuming device.

Switchgear load sharing for oil field equipment

A hydraulic fracturing system for fracturing a subterranean formation is disclosed. In an embodiment, the system may include a plurality of electric pumps fluidly connected to a well associated with the subterranean formation and powered by at least one electric motor, and configured to pump fluid into a wellbore associated with the well at a high pressure so that the fluid passes from the wellbore into the subterranean formation and fractures the subterranean formation; at least one generator electrically coupled to the plurality of electric pumps so as to generate electricity for use by the plurality of electric pumps; and at least one switchgear electrically coupled to the at least one generator and configured to distribute an electrical load between the plurality of electric pumps and the at least one generator.

Method and apparatus for integrating on-shore green and other on-shore power sources with a compressed air energy storage system on a floating power plant

An offshore compressed air energy storage system has a barge comprising with a deck, and at least one pressure vessel configured to store compressed air. A power source powers at least one air compressor configured to pressurize the pressure vessel. A compander set has at least one turboexpander having an input, an output, and a shaft, as well as at least one heat exchanger and at least one turbocompressor. A mass air control valve is configured to control the compressed air flow from the pressure vessel to the turboexpander. A generator is in communication with the shaft of the turboexpander, and a control system. The at least one pressure vessel is buoyant, and wherein the at least one air compressor, the turboexpander, the mass air control valve, and the generator are attached to the barge.

DC MICRO-GRID

Systems and methods are provided for creating and operating a Direct Current (DC) micro-grid. A DC micro-grid may include power generators, energy storage devices, and loads coupled to a common DC bus. Power electronics devices may couple the power generators, energy storage devices, and loads to the common DC bus and provide power transfer.

Building energy optimization system with automated and dynamic economic load demand response (ELDR) optimization

An energy optimization system for a building includes a processing circuit configured to provide a first bid including one or more first participation hours and a first load reduction amount for each of the one or more first participation hours to a computing system. The processing circuit is configured to operate one or more pieces of building equipment based on one or more first equipment loads and receive one or more awarded or rejected participation hours from the computing system responsive to the first bid. The processing circuit is configured to generate one or more second participation hours, a second load reduction amount for each of the one or more second participation hours, and one or more second equipment loads based on the one or more awarded or rejected participation hours and operate the one or more pieces of building equipment based on the one or more second equipment loads.

Thruster electric power systems ans associated methods

Generated power control system and control method for intelligent micro-grid with medium energy storage

Thruster electric power systems and associated methods

A thruster electric power system includes one or more energy storage units configured to power an electric thruster of a mobile offshore drilling unit in response to one or more combustion generators of the mobile offshore drilling unit being unavailable to provide electric power to the electric thruster. A mobile offshore drilling unit capable of dynamic positioning includes one or more thruster enclosures, each thruster enclosure including: (a) one or more thruster converters configured to power respective electric thrusters, and (b) one or more energy storage units configured to power the respective electric thrusters of the one or more thruster converters in response to one or more combustion generators of the mobile offshore drilling unit being unavailable to provide electric power to the electric thrusters.

Nested microgrid control system

Unique systems, methods, techniques and apparatuses of a power grid control system. One exemplary embodiment is a nested microgrid system comprising a first microgrid including a network controller, a second microgrid, a third microgrid, a first restoration path selectively coupled between a second portion of the first microgrid and the second microgrid, and a second restoration path selectively coupled between the second portion of the first microgrid and the third microgrid. The network controller is configured isolate the first portion of the first microgrid from the second portion of the first microgrid, calculate weighting factors for the first and second restoration paths, select the first restoration path using the first weighting factor and the second weighting factor, and couple the second portion of the first microgrid to the second microgrid using the first restoration path.

METHODS AND SYSTEMS FOR GREEN ENERGY CHARGING OF ELECTRICAL VEHICLES

A microgrid system that supports EV charging. The microgrid system powers the load with one or more renewable energy sources (for example, solar, wind), battery storage, in combination with optional access to limited utility power and automatically-controlled generator power as a backup. The system can deliver clean uninterrupted power. The system provides flexibility to support the export of power for net metering, gross metering or peer-peer trading, as permitted by local regulations. The system includes a main storage sub-system and an optional secondary storage that may be brought online and increased or decreased as needed, and optimized based on guidance provided by the microgrid controller. The system also includes modules that decide how to optimally use the energy from the various sources, in order to maximize renewable energy usage, minimize the cost of electricity, while maximizing the life of the system.

SYSTEM AND METHOD FOR MANAGING POWER GENERATION

A method, device and system for providing power supply to an electrical load within a facility, which is connected to a power grid network/island power network. The power management system includes a controller coupled to an electrical panel for controlling the operation of the electrical load, wherein the controller is configured to determine a target power amount to be provided to the electrical load based on peak power amount required by the electrical load. The system provides a power regulator and a power generation system to generates at least one control signal for the power generation system based on the target power amount and the power generation system receives a control signal and generates target electrical power corresponding to the target power amount based on the control signal and configured to transmit the target electrical power to the electrical panel via a DC voltage power bus.

DC-DC CONVERTERS HAVING BULLET TERMINALS

Example DC-DC converters include a housing having at least two bullet terminals. The at least two bullet terminals are configured to mate with corresponding terminals in a DC bullet breaker panel. The converter also includes a DC-DC voltage converter circuit coupled between the at least two bullet terminals, and a controller coupled with the DC-DC voltage converter circuit. The controller is configured to control the DC-DC converter circuit to convert a DC input voltage at a first one of the at least two bullet terminals to a different DC output voltage at another one of the at least two bullet terminals. Methods of converting DC voltages using DC-DC converters having bullet terminals are also disclosed.

ENERGY GATEWAY, HOUSEHOLD APPLIANCE, DIRECT-CURRENT MICRO-GRID SYSTEM AND ENERGY MANAGEMENT METHOD THEREFOR

An energy gateway, a household appliance, a direct-current micro-grid system and an energy management method therefor. The energy gateway comprises: a direct-current input end (1) for being connected to a direct-current output end of an external solar power generation apparatus (2). The energy gateway further comprises a first direct-current output end and/or a second direct-current output end for supplying power to an external direct-current electrical appliance (4), wherein the first direct-current output end is directly connected to the direct-current input end, and the second direct-current output end is connected to the direct-current input end via a direct-current voltage transformation apparatus (5). The energy gateway, the household appliance and the direct-current micro-grid system make a grid-connected inverter dispensable, reduce device investment and electric energy conversion links, and improve the utilization efficiency of new energy photovoltaic power generation. Furthermore ...

INTEGRATED SOLAR PANEL

A solar panel (400) is disclosed that can be daisy-chained with other solar panels (100a- n). The solar panel (400) automatically generates output alternative current (AC) power (195) that is in parallel with input AC power (112) coming into the solar panel (400) when the solar panel (400) senses the input AC power (112) so that the solar panel (400) operates as a slave in this state. The solar panel (400) automatically generates standalone AC output power (195) when the solar panel (400) fails to detect input AC power (112) coming into the solar panel (400) where the solar panel (400) operates as a master in this state. The solar panel (400) generates the standalone output AC power (195) without any reliance on input AC power (112) generated by a utility grid and/or other AC power sources external to the solar panel (400).

METHOD FOR MONITORING A VIRTUAL GENERATOR

L'invention concerne un procédé de contrôle d'un générateur virtuel (1) comprenant au moins une source d'énergie renouvelable (2), un système d'accumulation (3) comprenant une réserve de puissance et/ou d'énergie, un onduleur (4) et une loi de commande, le générateur virtuel (1) délivrant à un micro réseau une puissance électrique active P/réactive Q de tension V et de courant I, lesdits tension V et courant I présentant une fréquence f, ladite puissance électrique active P/réactive Q contrôlant par statisme, respectivement, la fréquence f et la tension efficace Vrms de la tension V, le procédé comprenant un contrôle du générateur virtuel (1) par la loi de commande pour qu'il exécute un ajustement de la puissance active P/réactive Q délivrée au micro réseau, ledit ajustement étant adapté pour compenser une variation de la puissance active/réactive consommée par le micro réseau.

Building management and appliance control system

The present disclosure is directed to energy storage and supply management system. The system may include one or more of a control unit, which is in communication with the power grid, and an energy storage unit that stores power for use at a later time. The system may be used with traditional utility provided power as well as locally generated solar, wind, and any other types of power generation technology. In some embodiments, the energy storage unit and the control unit are housed in the same chassis. In other embodiments, the energy storage unit and the control unit are separate. In another embodiment, the energy storage unit is integrated into the chassis of an appliance itself.

Method and system of real time management and modulation of electricity consumption

A method of managing and modulating in real time the electrical consumption of a set of consumers, includes measurement in real time of the electrical consumption of a plurality of targeted sets of electrical equipment in operation, each set of equipment being situated in the home of a consumer, the measurement of the consumption of such equipment being performed by means of an electrical regulation module situated in the home of the consumer. The consumption measurements are transmitted by the modules to a central server. If a global setpoint, at a given moment, indicates that a certain total power should be cancelled, sending by the server, to certain of the modules, the instruction to selectively and temporarily cut the electrical power supply to the electrical equipment. Instruction sent by the server are received and executed by these modules.

Building management and appliance control system

The present disclosure is directed to energy storage and supply management system. The system may include one or more of a control unit, which is in communication with the power grid, and an energy storage unit that stores power for use at a later time. The system may be used with traditional utility provided power as well as locally generated solar, wind, and any other types of power generation technology. In some embodiments, the energy storage unit and the control unit are housed in the same chassis. In other embodiments, the energy storage unit and the control unit are separate. In another embodiment, the energy storage unit is integrated into the chassis of an appliance itself.

Frequency response optimization based on a change in battery state-of-charge during a frequency response period

A frequency response optimization system includes a battery configured to store and discharge electric power, a power inverter configured to control an amount of the electric power stored or discharged from the battery at each of a plurality of time steps during a frequency response period, and a frequency response controller. The frequency response controller is configured to receive a regulation signal from an incentive provider, determine statistics of the regulation signal, use the statistics of the regulation signal to generate an optimal frequency response midpoint that achieves a desired change in a state-of-charge (SOC) of the battery while participating in a frequency response program, and use the midpoints to determine optimal battery power setpoints for the power inverter. The power inverter is configured to use the optimal battery power setpoints to control the amount of the electric power stored or discharged from the battery.

System and methods for creating dynamic nano grids and for aggregating electric power consumers to participate in energy markets

A group of homes, businesses, or other electric power consuming premises are aggregated and commonly controlled to dynamically reduce loads in sufficient quantities, and with sufficient rapidity and duration, to participate as a market participant in the energy markets including participating as a peaking power plant. While the amount of reduced power consumption for a single premises is typically quite small, the total reduced consumption of an aggregation of just a few thousand homes or businesses may be on the order of hundreds of kilowatts. A premises power controller in conjunction with intelligent circuit breakers, which may include dimmers, enable dynamic management of individual loads in each premises.

Method and apparatus for effective utilization of energy storage components within a microgid

A method for effectively utilizing energy storage components within a microgrid may include the steps of connecting a first plurality of energy storage components to a DC bus through switches, connecting a second plurality of energy storage components to an AC bus through inverters, connecting controllers to the energy storage components, connecting a first plurality of the controllers to the DC bus to regulate bidirectional flow of energy between the DC bus and the first plurality of energy storage components and connecting a second plurality of the controllers to the AC bus to regulate bidirectional flow of energy between the AC bus and the second plurality of energy storage components. The controllers may be interconnected with a local energy storage system bus and controlled via a master microgrid controller connected to the local energy storage system bus. The controllers may have a state of charge and a state of health algorithm adapted to measure the state of charge and the state ...

СПОСОБ УПРАВЛЕНИЯ РАСПРЕДЕЛИТЕЛЬНОЙ ЭЛЕКТРИЧЕСКОЙ МИКРОСЕТЬЮ, НОСИТЕЛЬ ИНФОРМАЦИИ, КОМПЬЮТЕРНОЕ УСТРОЙСТВО И УСТРОЙСТВО УПРАВЛЕНИЯ

Система и устройство для снабжения электроэнергией и управления энергопотреблением

... 1. Система управления энергопотреблением, имеющая множество компонентов, включающих по меньшей мере один электрический блок управления, имеющий по меньшей мере один датчик, способный контролировать заданное состояние; источник питания, связанный с электрическим блоком управления, силовой тракт для подачи энергии к источнику питания и процессор, конфигурированный для связи с упомянутым по меньшей мере одним датчиком и силовым трактом, при этом процессор также конфигурирован для управления связью с упомянутой системой управления энергопотреблением.2. Система по п. 1, в которой упомянутый процессор выполнен с возможностью периодически контролировать по меньшей мере одно из следующего: напряжение, ток, активную мощность, полную мощность, реактивную мощность, частоту, полные гармонические искажения, дуговой пробой, нагрузки на розетки, коэффициент мощности, GFI, AFI и их комбинации.3. Система по п. 1, в которой упомянутый датчик выполнен с возможностью контролировать по меньшей мере одно из ...

Patent RU2019120563A3

ВИ“? 2019120563” АЗ Дата публикации: 19.03.2021 Форма № 18 ИЗПМ-2011 Федеральная служба по интеллектуальной собственности Федеральное государственное бюджетное учреждение ж 5 «Федеральный институт промышленной собственности» (ФИПС) ОТЧЕТ О ПОИСКЕ 1. . ИДЕНТИФИКАЦИЯ ЗАЯВКИ Регистрационный номер Дата подачи 2019120563/07(040211) 27.12.2017 РСТ/ЕР2017/0846677 27.12.2017 Приоритет установлен по дате: [ ] подачи заявки [ ] поступления дополнительных материалов от к ранее поданной заявке № [ ] приоритета по первоначальной заявке № из которой данная заявка выделена [ ] подачи первоначальной заявки № из которой данная заявка выделена [ ] подачи ранее поданной заявки № [Х] подачи первой(ых) заявки(ок) в государстве-участнике Парижской конвенции (31) Номер первой(ых) заявки(ок) (32) Дата подачи первой(ых) заявки(ок) (33) Код страны 1. 16207020.5 27.12.2016 ЕР Название изобретения (полезной модели): [Х] - как заявлено; [ ] - уточненное (см. Примечания) ИЕРАРХИЧЕСКИЙ НЕЯВНЫЙ КОНТРОЛЛЕР ДЛЯ ЭКРАНИРОВАННОЙ СИСТЕМЫ В ЭНЕРГОСЕТИ Заявитель: ВИТО НВ, ВЕ, НОДА ИНТЕЛЛИДЖЕНТ СИСТЕМС АБ, 5Е 2. ЕДИНСТВО ИЗОБРЕТЕНИЯ [Х] соблюдено [ ] не соблюдено. Пояснения: см. Примечания 3. ФОРМУЛА ИЗОБРЕТЕНИЯ: [Х] приняты во внимание все пункты (см. Примечания) [ ] приняты во внимание следующие пункты: [ ] принята во внимание измененная формула изобретения (см. Примечания) 4. КЛАССИФИКАЦИЯ ОБЪЕКТА ИЗОБРЕТЕНИЯ (ПОЛЕЗНОЙ МОДЕЛИ) (Указываются индексы МПК и индикатор текущей версии) С05В 13/02 (2006.01) НоО2.] 3/14 (2006.01) С05В 15/02 (2006.01) 5. ОБЛАСТЬ ПОИСКА 5.1 Проверенный минимум документации РСТ (указывается индексами МПК) 005В 13/00-13/02, НО2. 3/00-3/14, @05В 15/00-15/02; 5.2 Другая проверенная документация в той мере, в какой она включена в поисковые подборки: 5.3 Электронные базы данных, использованные при поиске (название базы, и если, возможно, поисковые термины): РУ\УРТ, ЕВЗСО, Езрасепеё, Соозе Ра РАТЕМТСОРЕ, Рабеагсв, КОРТО 6. ДОКУМЕНТЫ, ОТНОСЯЩИЕСЯ К ПРЕДМЕТУ ПОИСКА Кате- Наименование ...

Method for stabilizing AC mains in low-power island net i.e. ship net, at e.g. mining industry, involves determining target idling frequency and target idling main voltage from actual active power

The method involves detecting an actual active power and an actual reactive power during power exchange between a net inverter and AC mains. Gains of a switching command for the net inverter, the actual active power and a target idling frequency are determined. The net inverter is controlled based on the switching command. The target idling frequency and target idling main voltage are determined from the actual active power. Rules of direct voltage of an intermediate circuit are determined by buffering energy in the actuator. An independent claim is also included for a circuit device for stabilizing AC mains.

Controlling power distribution with a microgrid

Electrical system for a residential site

Providing an electrical system and method thereof, for a residential site having at least one dwelling 5 and a consumer unit 33. A wind power system 17 and a solar power system 23 are electrically connected to an energy store 31, e.g. battery. A connection 19 electrically connects the energy store to a mains source. An energy management system 55 selectively stores energy from the wind, solar and mains supplies in the energy store, and can also selectively supply the consumer unit with electricity from the energy store. The electrical network can power any standard house appliance. Intended to overcome issues of residential power systems as non-renewable energy sources are phased out.

Grid tied, real time adaptive, distributed intermittent power

Utility customers' intermittent power generation systems are made autonomously real time adaptive at the customer circuit level, so each of the customers' circuits contributes, at that customer's common connection to the utility meter, to the utility's desired outcome for that customer's circuit, or contributes, at the intermediate circuit level, to the utility's desired aggregate outcomes for customers on that intermediate circuit. Energy management controllers are connected, behind the customer's utility meter to controlled load portions of that customer's varying load, to autonomously add or shed, in real time, those controlled load portions, or (if there is stored energy) to autonomously discharge, in real time, stored power from storage. Utility rules for achieving desired outcomes can be downloaded to the controllers and customers can individually opt-in to some, all, or none, of those utility rules. Real time means within sub second to fifteen second intervals.

LOAD SWITCH FOR FRAGILE ELECTRIC POWER NETWORKS

A system and method for selectively connecting loads in a power system network, where the loads are coupled to a number of lateral lines and the lateral lines are coupled to a feeder line, when the feeder line is disconnected from an electrical grid as a result of voltage outside of a predetermined range. Each lateral line includes a switching device positioned where the lateral line connects to the feeder line, where each switching device is provided with a timing control to switch on or off the switching device with a delay time. When the network is disconnected from the electrical grid, the switching devices detect the voltage being outside of the predetermined range and then open. When power sources in the network are returned to service the network, the switching devices detect that voltage is within the predetermined range and are closed based on a certain predetermined delay.

GRID ASSET MANAGER

An asset manager controls power distribution within an aggregated distributed energy resources system ("DERs system") having a plurality of assets. The asset manager is configured to operate with a given asset. As such, the asset manager has 1) an interface to receive asset information relating to the given asset and to communicate with another asset manager in the DERs system, and 2) a function generator configured to produce a local cost function using data relating to the given asset only. The local cost function represents a portion of a system cost function for the DERs system. The asset manager also has 3) a controller configured to use the local cost function for the given asset to manage operation of the given asset in the DERs system. In addition, the controller also is configured to determine, using the local cost function, an operating point for the given asset.

PLUG AND PLAY WITH SMART ENERGY STORAGE UNITS

A smart energy storage system is described. The system includes a smart energy storage unit coupled to a selected circuit of a local electric grid, and configured for being charged so as to withdraw and store energy from the local electric grid, and discharged for supplying energy to the local electric grid. The smart energy storage unit includes an energy storage cell configured for being charged so as to withdraw and store energy from the local electric grid, and discharged for supplying energy to the local grid, and a storage cell management unit for controlling the energy storage cell.

BATTERY POWERED MECHANIZED RAISE CLIMBING SYSTEM

A battery powered raise climber system is provided that uses Lithium ion batteries to drive a single or double electric drive for an existing raise climber. The batteries offer a faster, safer, quieter and cleaner way to move workers and their equipment to and from the work face in a raise and eliminates the need for adding lengths of hose as the raise climber ascends and eliminates the emission of harmful inhalants. The battery powered system also enables high efficiency area lighting to be used at the work face, and as the raise climber descends in the raise, the electric drives can reverse operation to recharge the batteries.

Zig zag based load flow method and system for extended radial distribution systems

A power distribution system configured as a radial network includes buses having respective voltages, and distribution lines having respective currents. The radial network interconnects the buses with the distribution lines in a tree-like manner. A bus has a link to at least two distribution lines. The bus voltages and distribution line currents are determined by a processing circuitry configured to receive a Branch Matrix (BM) iteratively determine currents for the distribution lines and voltages for each of the buses until a difference is below a predetermined tolerance, and output final bus voltages and final distribution line currents. The circuitry iteratively determines the currents by determining a current matrix (CM) using the BM, and by determining the currents for the plurality of distribution lines in a zig zag manner over the matrix elements in the CM. The system finds a solution using fewer iterations than the backward forward sweep method.

Grid Asset Manager

An asset manager controls power distribution within an aggregated distributed energy resources system (“DERs system”) having a plurality of assets. The asset manager is configured to operate with a given asset. As such, the asset manager has 1) an interface to receive asset information relating to the given asset and to communicate with another asset manager in the DERs system, and 2) a function generator configured to produce a local cost function using data relating to the given asset only. The local cost function represents a portion of a system cost function for the DERs system. The asset manager also has 3) a controller configured to use the local cost function for the given asset to manage operation of the given asset in the DERs system. In addition, the controller also is configured to determine, using the local cost function, an operating point for the given asset.

CONTROL DEVICE FOR DC MICROGRID AND CONTROL METHOD THEREOF, DC MICROGRID SYSTEM

The present invention provides a control device for a direct-current (DC) microgrid and a control method thereof, and a DC microgrid system. The control device of a DC microgrid comprises a detection module configured for detecting a voltage change rate of the DC bus, and a regulation module configured for regulating energy compensation by the energy compensation means to the DC bus based on the voltage change rate of the DC bus that is detected by the detection module. In the control device for a DC microgrid provided by the present invention, the detection module detects in real time the condition of voltage change of the DC bus, and the control module regulates in real time the energy compensation by the energy compensation means to the DC bus based on the result detected by the detection module, such that stability of voltage of the DC bus is increased, and the DC microgrid can be operated stably.

RETENTION AMOUNT MANAGEMENT SYSTEM AND RETENTION AMOUNT MANAGEMENT METHOD

A retention amount management system includes a detector that detects an amount of retention and a server that adjusts an amount of production of hydrogen in a production facility such that the amount of retention of hydrogen retained in a retention facility for a predetermined period attains to a target amount of retention. The server sets the target amount of retention such that an amount of hydrogen α corresponding to an amount of surplus electric power during a preparation period during which electric power generated per prescribed period by using renewable energy is higher than a threshold value is larger than an amount of hydrogen β corresponding to the amount of surplus electric power during an ordinary period.

СПОСОБ УПРАВЛЕНИЯ РАСПРЕДЕЛИТЕЛЬНОЙ ЭЛЕКТРИЧЕСКОЙ МИКРОСЕТЬЮ, НОСИТЕЛЬ ИНФОРМАЦИИ, КОМПЬЮТЕРНОЕ УСТРОЙСТВО И УСТРОЙСТВО УПРАВЛЕНИЯ

Изобретение относится к области электротехники, в частности к способу управления распределительной электрической микросетью, причем микросеть содержит электрический соединительный узел, в котором обеспечена возможность электрического отключения указанной микросети от основной распределительной электрической сети, один или более электроприемников, причем электроприемники включают один или более отключаемых электроприемников, по меньшей мере источник электроэнергии, содержащий один или более генераторов электроэнергии. Способ согласно настоящему изобретению осуществляют в ответ на отключение микросети от основной сети в момент отключения, причем он содержит этапы, на которых определяют, произошло ли электрическое отключение микросети от основной сети из-за неисправности в основной сети, если определено, что отключение микросети от основной сети произошло не из-за неисправности в основной сети, то выполняют процедуру сброса нагрузки для отключения выборочно одного или более отключаемых электроприемников ...

Verfahren zum Schwarzstart einer Energieversorgungseinrichtung, bidirektionaler Wechselrichter und Energieversorgungseinrichtung mit einem bidirektionalen Wechselrichter

Die Erfindung betrifft ein Verfahren zum Schwarzstart einer Energieversorgungseinrichtung (18), wobei die Energieversorgungseinrichtung (18) mindestens einen bidirektionalen Wechselrichter (20) mit einem AC-seitigen Anschluss (25) für ein Netz (6) und eine DC-seitig an den bidirektionalen Wechselrichter (20) angeschlossene Batterie (22) umfasst.Das Verfahren ermöglicht einen Schwarzstart der Energieversorgungseinrichtung (18).Hierzu wird in einem Verfahrensschritt eine Aktivierungseinrichtung (51) der Energieversorgungseinrichtung (18) betätigt, so dass die Aktivierungseinrichtung eine Steuerleitung (27) der Batterie (22) mit einer elektrischen Spannung derart beaufschlagt, dass die Batterie (22) in einen Betriebszustand versetzt wird, wobei die von der Aktivierungseinrichtung (51) bereitgestellte Spannung von einer Hilfsbatterie (52) bereitgestellt, und-in einem weiteren Verfahrensschritt nach der Beaufschlagung der Steuerleitung (27) durch die von der Hilfsbatterie (52) bereitgestellte ...

System for synchronising a renewable power source with mains supply

A power management system 10 has a control processor 16 with a first power input 20, which may be a mains source, and a second power input 12, which may be a renewable source such as a solar photovoltaic source, and at least one power output 28. The control processor 16 monitors and adjusts the phase of the power supplied at the second power input 12 via an inverter 22 so that it is in phase with the power supplied at the first power input 20. The power to the output 28 may be preferentially supplied by the renewable source 12. Batteries or capacitors 14 may be provided to store power from the renewable source 12. One or more batteries 14 may be removable for use as a stand alone power source.

A power management system

Generated power control system and control method for intelligent micro-grid with medium energy storage

An energy system for supply of power to a mobile offshore drilling unit

The invention is related to an energy system for supply of power to a Mobile Offshore Drilling Unit. The energy system comprises: - a first storage and supply device, - a second storage and supply device, - a remote power generation source for supplying power to the first and/or second storage and supply device via one or more electrical cables. The first storage and supply device are configured to store and provide sufficient power for one or more end-users onboard the Mobile Offshore Drilling Unit during normal operations, and wherein the second storage and supply device as a minimum is configured to store and provide sufficient power to secure a well, as an emergency preparedness, in case of a combined situation of a well control incident and loss of the remote power generation source. The invention is also related to a Mobile Offshore Drilling Unit and a method thereof.

Method of controlling a microgrid, power management system, and energy management system

A method of controlling a microgrid comprises receiving, by a power management system, PMS, of the microgrid, operating point values for a plurality of controllable assets. The method comprises determining, by the PMS, an asset headroom. The method comprises determining, by the PMS, a modified operating point value that is dependent on the received operating point value of the controllable asset, the determined asset headroom of the controllable asset, and a total power offset of the microgrid. The method comprises controlling, by the PMS, the controllable assets for which the modified operating point values have been determined in accordance with the modified operating point values. (Fig. 1) ____ ___ ____ ___ ____ ___ ____ ___ 101 Receiving operating point values Computing asset headroom for a plurality of controllable 102 assets Computing scaling factors 103 Computing modified operating point 104 values Controlling plurality of controllable 105 assets based on the modified operating point ...

Nested microgrid control system

Unique systems, methods, techniques and apparatuses of a power grid control system. One exemplary embodiment is a nested microgrid system comprising a first microgrid including a network controller, a second microgrid, a third microgrid, a first restoration path selectively coupled between a second portion of the first microgrid and the second microgrid, and a second restoration path selectively coupled between the second portion of the first microgrid and the third microgrid. The network controller is configured isolate the first portion of the first microgrid from the second portion of the first microgrid, calculate weighting factors for the first and second restoration paths, select the first restoration path using the first weighting factor and the second weighting factor, and couple the second portion of the first microgrid to the second microgrid using the first restoration path. 17643664 1 (GHMatters) P112633.AU.1 ...

Power Supply System And Method For Alternating Current Load

The present disclosure provides a power supply system method for an AC load. The system includes a power supply device and a DC/AC converter. An AC side of the DC/AC converter is coupled to an AC grid and the AC load through an AC bus. The power supply device is coupled to a DC side of the DC/AC converter through a DC bus and outputs DC electric energy to the DC bus. The power supply device includes an energy storage circuit and a controller. The energy storage circuit includes a first energy storage circuitry and a second energy storage circuitry. The controller is configured to control a conversion operation of the first energy storage circuitry to output a low-frequency power, and a conversion operation of the second energy storage circuitry to output a high-frequency power. t C~slFDC/AC -1AC Bus 8 A __ _ __ _ Converter Grid -- --- - -------------------12 9 Power Supply Device I I Energy storage circuitI1 1 Output Port AC L)ad First Energy 1113 10 storage circuitry Second Energy storage ...

Decentralized false data mitigation for nested microgrids

Systems, methods, techniques and apparatuses of nested microgrids are disclosed. One exemplary embodiment is a method for removing false data in a nested microgrid system, the method comprising: calculating a first local state estimation using a first plurality of local measurements and a second local state estimation using a second plurality of local measurements; calculating, with a central control system, a plurality of global state estimations including a first global state estimation a second global state estimation; performing a first false data detection test using the first local state estimation and one global state estimation of the plurality of global state estimations; performing a second false data detection test using the first global state estimation and the second global state estimation; detecting false data; and updating the first global state estimation, the second global state estimation, or the first local state estimation in response to detecting the false data.

Grid tied, real time adaptive, distributed intermittent power

A method for predicting the reactive power needs (or other power characteristic needs) for a plurality of customer circuits on an intermediate circuit operably connected to the grid by averaging measurements of utility power diaracterisiies (such as power factor, frequency, and voltage) from a plurality of energy management controllers (or other measuring devices) connected to said customer circuits so that the utility or other grid participant can tailor its power output to meet active and reactive power needs (or other power characteristic needs) to improve tTansmission efficiency, increase capacity and avoid voltage fluctuations.

Power Conversion Apparatus and Smart Grid System Having the Same

OF DISCLOSURE A power conversion apparatus and a smart grid system having the same are disclosed. The power conversion apparatus includes a micro control unit, a voltage measuring unit, a communication unit, and a power conversion unit. The voltage measuring unit is coupled to the 5 micro control unit. The communication unit is coupled to the micro control unit, a current detecting port, and a communication port. The power conversion unit is coupled to a DC input port and an AC output port. (Fig. 1) C) 8-CE cco cE a) E cu3 ...

Apparatus and method for providing power interface

Aspects and embodiments described herein are directed toward a power interface device including a first power interface configured to couple to an electric utility and a second power interface configured to couple to a microgrid comprising one or more power sources and one or more loads, the one or more power sources including a generator. The power interface device also includes a power conversion circuit coupled to the first power interface and the second power interface and a controller coupled to the power conversion circuit. The controller is configured to allow interfacing between the electric utility operating at a first frequency and voltage and the microgrid operating at a second frequency and voltage by at least detecting an operating frequency of the generator and controlling a power flow between the electric utility and the microgrid based on the operating frequency of the generator.

Building management and appliance control system

The present disclosure is directed to energy storage and supply management system. The system may include one or more of a control unit, which is in communication with the power grid, and an energy storage unit that stores power for use at a later time. The system may be used with traditional utility provided power as well as locally generated solar, wind, and any other types of power generation technology. In some embodiments, the energy storage unit and the control unit are housed in the same chassis. In other embodiments, the energy storage unit and the control unit are separate. In another embodiment, the energy storage unit is integrated into the chassis of an appliance itself.

Microgrid segmentation

The present disclosure relates to a method of controlling a microgrid arrangement (1) comprising a microgrid (6) comprising a plurality of switches (8), and a plurality of Distributed Generators (DGs) (2a,2b,2c) arranged for being connected to the microgrid (6). The method comprises obtaining information about the microgrid arrangement(1).The method also comprises, based on the obtained information, dynamically linking a first group of switches, of the plurality of switches (8), to each other. The method also comprises detecting an event in the microgrid (6), and in response to the detection, automatically opening closed switches in the first group, whereby a first segment (9a) of the microgrid (6) is disconnected from a second segment (9b) of the microgrid (6).

Solar power generation, distribution, and communication system

A solar panel (400) is disclosed that can be daisy-chained with other solar panels (100a-n). The solar panel (400) automatically generates output alternative current (AC) power (195) that is in parallel with input AC power (112) coming into the solar panel (400) when the solar panel (400) senses the input AC power (112) so that the solar panel (400) operates as a slave in this state. The solar panel (400) automatically generates standalone AC output power (195) when the solar panel (400) fails to detect input AC power (112) coming into the solar panel (400) where the solar panel operates as a master in this state. The solar panel (400) generates the standalone output AC power (195) without any reliance on input AC power (112) generated by a utility grid and/or other AC power sources external to the solar panel (400).

CONTROL DEVICE FOR DC MICROGRID AND CONTROL METHOD THEREOF, DC MICROGRID SYSTEM

Provided are a control device and control method for a direct-current micro-grid, and a direct-current micro-grid system. The control device for a direct-current micro-grid comprises: a detection module (100) for detecting a voltage change ratio on a direct-current bus; and a regulation module (200) for regulating energy compensation of an energy compensation apparatus for the direct-current bus according to the voltage change ratio, detected by the detection module, on a direct-current bus. The control device for the direct-current micro-grid detects, by means of a detection module, a voltage change on a direct-current bus in real time, and a control module regulates, according to a detection result of the detection module, energy compensation of an energy compensation apparatus for the direct-current bus in real time, thereby improving the stability of the voltage on the direct-current bus, and thus making the direct-current micro-grid operate stably.

BUILDING MANAGEMENT AND APPLIANCE CONTROL SYSTEM

The present disclosure is directed to energy storage and supply management system. The system may include one or more of a control unit, which is in communication with the power grid, and an energy storage unit that stores power for use at a later time. The system may be used with traditional utility provided power as well as locally generated solar, wind, and any other types of power generation technology. In some embodiments, the energy storage unit and the control unit are housed in the same chassis. In other embodiments, the energy storage unit and the control unit are separate. In another embodiment, the energy storage unit is integrated into the chassis of an appliance itself.

CONTROL METHOD OF A MICRO ELECTRIC SUPPLY NETWORK

L'invention concerne un procédé de contrôle d'un micro réseau (1) électrique comprenant une source d'énergie renouvelable (3), délivrant au micro réseau (1) une première puissance contrôlée par statisme, et adaptée pour fonctionner de manière synchrone et en parallèle avec une source d'énergie synchrone (2), la source synchrone (2) étant adaptée pour produire une seconde puissance, également délivrée au micro réseau (1), selon un critère de démarrage/interruption, automatique, de ladite source synchrone, le procédé comprenant le démarrage de la source synchrone dès lors que la fréquence et/ou la tension du micro réseau (1) sont inférieures à, respectivement, une fréquence seuil et/ou une tension seuil, et l'interruption de la source synchrone dès lors que la seconde puissance est inférieure à une puissance seuil.

SOLAR POWER GENERATION, DISTRIBUTION, AND COMMUNICATION SYSTEM

Island grid power supply apparatus and methods using energy storage for transient stabilization

A system includes at least one generator coupled to an island grid, at least one energy storage unit and at least one converter coupled to the at least one energy storage unit and configured to be coupled to the island grid. The system further includes a control circuit configured to cause the at least one converter to transfer power between the at least one energy storage unit and the grid responsive to a change in a load on the island grid to maintain operation of the at least one generator at a predetermined operating point. The at least one generator may include a control system configured to match generator output to the load and the control circuit may be configured to maintain the control system of the at least one generator within a predetermined dynamic response capability limit responsive to the change in the load.

Methods and apparatus for power generation and distribution

Methods and apparatus for power generation and distribution according to various aspects of the present invention may operate in conjunction with a control system for controlling electrical power flowing between a main electrical grid providing main electrical grid power having a frequency, a supplemental power system, and a load. The control system may operate in conjunction with a switch system, wherein the switch system selectively connects the supplemental power system to the main electrical grid. A controller may be responsive to the main electrical grid power frequency and control the switch system. The controller may compare the main electrical grid power frequency to a first threshold and autonomously cause the switch system to connect the supplemental power system to the main electrical grid in response to the frequency of the main electrical grid power crossing the first threshold.

MICROGRID CONTROL SYSTEM

The present invention relates to a system for controlling microgrid facilities. In particular, the microgrid control system provided is capable of controlling multiple facilities according to characteristics of the facilities in order to achieve economic efficiency, environmental friendliness, and continued operability. The microgrid control system for controlling the operations of the multiple power facilities is provided with: a power supply activation/suspension planning unit that has a prediction unit for predicting outputs or loads of power supply facilities or load facilities and a prediction unit for predicting prediction errors contained therein; and an economical load allocation unit that determines command values related to the distribution of loads to be borne by currently running power supply facilities.

Intelligent circuit breaker

An intelligent circuit breaker electrically is capable of being actuated and interfacing with a conventional circuit breaker. The intelligent circuit breaker includes a wireless transceiver for communicating with other intelligent circuit breakers, a breaker controller, memory, and a display. The memory may be used to temporarily store data of interest regarding the intelligent circuit breaker's status, power consumption, operating history, and the like. The intelligent circuit breaker may advantageously be constructed in a form factor which is compatible with standard circuit breaker panels.

ИЕРАРХИЧЕСКИЙ НЕЯВНЫЙ КОНТРОЛЛЕР ДЛЯ ЭКРАНИРОВАННОЙ СИСТЕМЫ В ЭНЕРГОСЕТИ

FIELD: electrical engineering.SUBSTANCE: invention relates to the electrical engineering, in particular to the control of heating and/or cooling systems and clusters of such systems. There are restrictions and target indicators for an electrical distribution network, and these restrictions and target indicators are known to an external modernized controller. At least one device is equipped with an internal controller to regulate the consumption of “hot” or “cold” thermal energy and to receive parameters as input data for the internal controller. The external modernized controller is made with the possibility to process at least one parameter and issue the processed parameter to the internal controller in order to change the operating mode of at least one device ensuring at least partial compliance with the restrictions and target indicators of the electrical distribution network. Managing of the internal controller is carried out by manipulating the processed parameters.EFFECT: increased flexibility of the system.18 cl, 18 dwg, 6 tbl РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 747 281 C2 (51) МПК G05B 13/02 (2006.01) H02J 3/14 (2006.01) G05B 15/02 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК G05B 13/0265 (2021.02); H02J 3/14 (2021.02); G05B 15/02 (2021.02) (21)(22) Заявка: 2019120563, 27.12.2017 (24) Дата начала отсчета срока действия патента: Дата регистрации: 04.05.2021 27.12.2016 EP 16207020.5 (43) Дата публикации заявки: 29.01.2021 Бюл. № 4 (45) Опубликовано: 04.05.2021 Бюл. № 13 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 29.07.2019 (56) Список документов, цитированных в отчете о поиске: RU 2282229 C1, 20.08.2006. RU 162791 U1, 27.06.2016. GB 2472385 A, 09.02.2011. US 2016105023 A1, 14.04.2016. US 8768528 B2, 01.07.2014. 2 7 4 7 2 8 1 (73) Патентообладатель(и): ВИТО НВ (BE), НОДА ИНТЕЛЛИДЖЕНТ СИСТЕМС АБ (SE) Приоритет(ы): (30) Конвенционный приоритет: R U 27.12.2017 (72) Автор(ы): ...

Steuern eines Energieaustausches

Es wird ein Verfahren zum Steuern eines Energieaustausches zwischen mehreren Energiesystemen (3, 3') mittels einer Steuerungszentrale (1) vorgeschlagen, wobei wenigstens eine Komponente (4) eines der Energiesysteme (3) über ein Schnittstellenmodul (2) zum Datenaustausch mit der Steuerungszentrale (1) gekoppelt und gemäß Steuerungsdaten betreibbar ist, und welches wenigstens die folgenden Schritte umfasst:- Senden eines ersten Datensatzes durch die Komponente (4) an das Schnittstellenmodul (2), wobei der erste Datensatz wenigstens ein Vorhersageprofil bezüglich eines Energieaustausches der Komponente (4) umfasst;- Senden eines zweiten Datensatzes durch das Schnittstellenmodul (2) an die Steuerungszentrale (1), wobei der zweite Datensatz wenigstens den ersten Datensatz und komponentenspezifische Daten der Komponente (4) umfasst;- Ermitteln von Steuerungsdaten durch die Steuerungszentrale (1), wobei hierbei wenigstens das mittels des zweiten Datensatzes übermittelte Vorhersageprofil und die ...

A system and apparatus for providing and managing electricity

A system and device for providing power to and monitoring the energy usage of a device connected thereto includes a unit having one or more circuit boards having components for detecting the energy usage of the connected device and an interface for electrically connecting to the device. The unit communicates with a coordinator regarding the connected device or the state of the unit itself. Depending on the communication received from the unit, the coordinator relays the received data to a server and awaits instruction, or immediately commands the unit to take a certain action. If the server receives data from the coordinator, it sends such data to a remote server, saves it, generate reports based thereon, and/or alerts a user regarding same. The user can choose to send a command to the unit or device through the system.

Electrical energy storage system with cascaded frequency response optimization

A frequency response controller includes a high level controller configured to receive a regulation signal from an incentive provider, determine statistics of the regulation signal, and use the statistics of the regulation signal to generate a frequency response midpoint. The controller further includes a low level controller configured to use the frequency response midpoint to determine optimal battery power setpoints and use the optimal battery power setpoints to control an amount of electric power stored or discharged from a battery during a frequency response period.

POWER TRANSFER SYSTEM

A vehicle-to-vehicle power transfer system for use between a first vehicle and at least a second vehicle. The system includes an electric power system disposed in each of the first and second vehicles configured to provide electrical drive power to a vehicle drive system for propulsion of the associated vehicle and a power transfer system configured to transfer electric power from at least the electric power system of the first vehicle to the electric power system of the second vehicle while the vehicles are in motion or stationary.

ENERGIZATION CONTROL FOR ESTABLISHING MICROGRIDS

Methods for energizing microgrids and microgrid energy distribution systems are provided. A method for energizing a microgrid includes energizing a storage management system (SMS) that is configured to control power distribution in the microgrid. The method further includes connecting a plurality of reactive components to the SMS based on a configuration control programmed into the SMS. The method yet further includes ramping up an output voltage of the SMS based on limiting inrush currents of the plurality of reactive components in the microgrid.

GRID TIED, REAL TIME ADAPTIVE, DISTRIBUTED INTERMITTENT POWER

A method for predicting the reactive power needs (or other power characteristic needs) for a plurality of customer circuits on an intermediate circuit operably connected to the grid by averaging measurements of utility power diaracterisiies (such as power factor, frequency, and voltage) from a plurality of energy management controllers (or other measuring devices) connected to said customer circuits so that the utility or other grid participant can tailor its power output to meet active and reactive power needs (or other power characteristic needs) to improve tTansmission efficiency, increase capacity and avoid voltage fluctuations.

SELF FORMING MICROGRIDS

Self forming microgrids are disclosed. An electrical microgrid includes multiple power domains and power cables coupling the power domains together. Each power domain includes an intelligent distribution panel, and the power domains are coupled to the power cables through the intelligent distribution panels. An intelligent distribution panel includes sockets, an internal power bus coupled to the sockets, and a controller. The sockets enable connection of the intelligent distribution panel to one or more components within a power domain and to one or more other power domains through respective power connections. Power connections between power domains are through power cables coupled to the sockets. The controller is also coupled to the sockets, to control connectivity of the one or more components and the respective power connections with the internal power bus.

SYSTEM AND METHOD FOR SYSTEM-LEVEL POWER POINT CONTROL OF A PHOTOVOLTAIC DEVICE

A method of controlling a photovoltaic system includes providing a photovoltaic device having a variable DC voltage output and a variable DC current output. The photovoltaic device has a combination of a voltage output level and a current output level corresponding to a maximum power point. A DC power supply is connected in a parallel and/or series combination with the photovoltaic device. A DC load is connected in series to the combination of the DC power supply and the photovoltaic device such that the load is powered by the combination. A characteristic of the DC power supply is adjusted such that the voltage output and the current output of the photovoltaic device substantially match the voltage output level and the current output level corresponding to the maximum power point or other desired power point.

Generator dispatching or load shedding control method and system for microgrid applications

A microgrid power generation system includes a plurality of generators having a plurality of different rated capacities and a plurality of distribution nodes, at least some of the distribution nodes being powered by the generators. A grid is formed by the distribution nodes, the grid includes a system frequency. A plurality of loads are powered by the grid through the distribution nodes, the loads have a power demand. A processor includes a plurality of efficiency bands, each of the efficiency bands being for a corresponding one of the generators and including a plurality of generator switching points based upon droop of the system frequency and the power demand of the loads. The processor is structured to operate the generators and the loads under transient conditions based upon the efficiency bands.

MICROGRID CONTROL SYSTEM AND METHOD THEREOF

METHOD, SYSTEM AND CONTROLLER FOR DISTRIBUTING ELECTRIC ENERGY

АВТОНОМНОЕ МОБИЛЬНОЕ УСТРОЙСТВО ДЛЯ ГЕНЕРИРОВАНИЯ, АККУМУЛИРОВАНИЯ И РАСПРЕДЕЛЕНИЯ ЭЛЕКТРОЭНЕРГИИ

ИЕРАРХИЧЕСКИЙ НЕЯВНЫЙ КОНТРОЛЛЕР ДЛЯ ЭКРАНИРОВАННОЙ СИСТЕМЫ В ЭНЕРГОСЕТИ

СИСТЕМА И СПОСОБ ПЛАВНОГО ПЕРЕКЛЮЧЕНИЯ ДЛЯ МИКРО-ЭНЕРГОСИСТЕМЫ

Photovoltaikspeichersystem

Die Erfindung betrifft eine Steuervorrichtung (20) zur Verwendung in einer Erzeuger-/Verbraucher-Anordnung (1) zum Erzeugen und Verbrauchen elektrischer Energie, und die Anordnung umfasst mehrere elektrische Verbraucher (8), von denen wenigstens einer ein steuerbarer Verbraucher ist, einen regenerativen Energieerzeuger (2), insbesondere eine Solaranlage (2), zum Erzeugen elektrischer Energie, einen elektrischen Zwischenspeicher (6), zum Speichern elektrischer Energie und eine Einspeisemesseinheit (22), die den Lastfluss vom Haus()in ein elektrisches Versorgungsnetz (16) oder die aktuellen Verbrauch (8) misst, wobei die Steuervorrichtung (20) dazu vorbereitet ist, den steuerbaren Verbraucher abzuschalten oder in seinem Verbrauch zu reduzieren, wenn der regenerative Energieerzeuger (2) mehr elektrische Leistung erzeugt, als die Verbraucher (8) der Anordnung (1) aktuell zusammen verbrauchen, und/oder wobei die Steuervorrichtung (20) dazu vorbereitet ist, den steuerbaren Verbraucher zuzuschalten oder in seinem Verbrauch zu erhöhen, wenn der regenerative Energieerzeuger (2) weniger elektrische Leistung erzeugt, als die Verbraucher (8) der Anordnung (1) aktuell zusammen verbrauchen und/oder ein Leistungshub ΔP den Betrag der Differenz zwischen der aktuell erzeugten Leistung des regenerativen Energieerzeugers (2) und der verbrauchten Leistung der Verbraucher (8) der Anordnung (1) bezeichnet, und die Steuervorrichtung (20) dazu vorbereitet ist, die Anordnung (1) so zu steuern, insbesondere den wenigstens einen steuerbaren Verbraucher so zu- oder abzuschalten oder in seinem Verbrauch so zu erhöhen oder zu verringern, dass der Leistungshub ΔP vergrößert wird.

METHOD AND APPARATUS FOR CONTROL OF AN ELECTRIC POWER SYSTEM IN RESPONSE TO CIRCUIT ABNORMALITIES

OPTIMIZATION OF MICROGRID ENERGY USE AND DISTRIBUTION

An energy distribution may include a server and one or more databases. The system may communicate with an energy provider to receive energy provider data, at least one information collector to receive information collector data such as individualized energy usage data, customer preferences, and customer or location characteristics, and the one or more databases for receiving data for optimization. The system may calculate a cost of service or avoided cost using at least one of the individualized energy usage data and a system generation cost at a nearest bus. The system may also forecast individualized demand by end-use, individualized demand by location, energy prices, or energy costs. The system may optimize energy distribution, energy use, cost of service, or avoided cost using the forecasted individualized demand by end-use, the forecasted individualized demand by location, the forecasted energy prices, and the forecasted energy costs. WO 2010/083334 PCT/US2010/021074 Buildings with ...

System, device, and method for off-grid microgrids management

A method, system, and device for managing off-grid power supply are provided. The method includes acquiring data from one or more loads. The one or more loads are connected to the off-grid power supply. The method further includes modeling the one or more loads based on the acquired data, estimating a state of charge of an energy storage device (ESD) associated with the off-grid power supply, and determining an operational status of each of the one or more loads. The operational status is based on at least the state of charge of the ESD and a category of each of the one or more loads. Each load is controlled based on the operational status.

ENERGY MANAGEMENT SYSTEM, POWER DEMAND PLAN OPTIMIZATION METHOD, AND POWER DEMAND PLAN OPTIMIZATION PROGRAM

This energy management system (10) is an energy management system for a microgrid (1) provided with: a power load (30) and/or a renewable energy power generation system (40); and an energy storage device (20). The energy management system (10) comprises: a prediction unit (111) which periodically predicts power demand and/or renewable energy power-generated power in a predetermined period, and electricity bill; and an optimization unit (112) which optimizes, using the result of prediction made by the prediction unit, an optimum charge/discharge plan for the energy storage device in the light of uncertainty of the prediction.

Fuel efficiency optimization for microgrid systems employing multiple generators

A system designed to optimize fuel efficiency of a power grid includes a set of controllable generators designed to supply power to the power grid. Each generator in the set is associated with a controller, a set of loads designed to draw power from the power grid, and a grid controller designed to provide a load partitioned configuration for the set of controllable generators, based at least partly on the power draw of the set of loads.

System and method for managing the delivery of electric power

A system for managing delivery of electric power includes at least one source of electric power supplying an aggregate amount of available power and a plurality of electrical loads, each having a priority designation. There is a power management system electrically connected to the source of electrical power and to the plurality of electrical loads. The power management system monitors electrical power demanded by the electrical loads and the aggregate amount of available power of the at least one source of electric power. When the power management system determines that the aggregate demanded power exceeds the aggregate amount of available power, the power management system continues to provide power to each of said electrical loads but at a power level which is less than demanded to one or more of said plurality of electrical loads based on the priority designation of each of said electrical loads.

Island grid power supply apparatus and methods using energy storage for transient stabilization

A system includes at least one generator coupled to an island grid, at least one energy storage unit and at least one converter coupled to the at least one energy storage unit and configured to be coupled to the island grid. The system further includes a control circuit configured to cause the at least one converter to transfer power between the at least one energy storage unit and the grid responsive to a change in a load on the island grid to maintain operation of the at least one generator at a predetermined operating point. The at least one generator may include a control system configured to match generator output to the load and the control circuit may be configured to maintain the control system of the at least one generator within a predetermined dynamic response capability limit responsive to the change in the load.

Clustered power generator architecture

Multiple dispatchable resources such as energy storage systems, generators, and curtailable loads are used to fulfill electricity usage control instructions by implementing multiple different sets of dispatch instructions. The sets of dispatch instructions vary based on individual status characteristics and aggregate status characteristics of the dispatchable resources in order to use the resources optimally. The resources may in some instances be prioritized according to their status characteristics in order to improve response efficiency, improve cost-effectiveness, reduce errors and flawed fulfillment, and improve the ability of the resources to respond to different kinds of electricity usage control instructions over time.

Segment protected parallel bus

A Segment Protected Parallel Bus is for an uninterruptible power supply to electric consumers, whereby at least two electrical distributed power generation units, are connected electrically parallel, each distributed power generation unit is coupled to at least one electric consumer bus. At least two electrical protection zones for isolating electrical faults and multiple protection zones with instantaneous tripping for the electrical parallel connection of consumer networks are provided in a mutual electrical ring connection. In the ring connection, a first switching element with a switching time of less than 10 ms for the electrical decoupling of the consumer buses from one another starting at a predetermined voltage drop, which is established according to load requirements, is arranged between each protection zone with instantaneous tripping and an adjacent protection zone in the first ring direction with instantaneous tripping and an adjacent protection zone in the second ring direction with instantaneous tripping.

Operation of a local alternating current network with a genset and a ups

A frequency of an AC voltage of an AC grid present at a genset is defined by an UPS. The frequency is altered in one direction away from a desired frequency, if a power demand increases beyond a power supply in the AC grid, and in the other direction, if the power demand falls below the power supply. An alteration of the frequency in the one direction is limited to a maximum value in that missing power is temporarily fed out of an energy storage of the UPS into the AC grid. A shift of the frequency in the one direction is kept until no more power flows out of the energy storage. The genset responds to deviations of the frequency of the AC voltage from the desired frequency in the one and the other direction by an increase and a decrease of supplied genset power, respectively.

Multi-source microgrid power supply system in oil well area

Disclosed herein are multi-source microgrid power supply systems including a rectifier having an incoming line terminal connected to a low-voltage side of a transformer and an outgoing line terminal connected to a DC bus having one terminal connected to the outgoing line terminal of the rectifier, an inverter having an incoming line terminal connected to the DC bus and an outgoing line terminal connected to oil well equipment, a first voltage regulator having an incoming line terminal connected to a photovoltaic array and an outgoing line terminal connected to the DC bus, a second voltage regulator having an incoming line terminal connected to an energy storage unit and an outgoing line terminal connected to the DC bus, and a third voltage regulator having an incoming line terminal connected to a wind power generation unit and an outgoing line terminal connected to the DC bus.

Micro-grid system with un-interruptible power supply

A micro-grid system with a power supply is disclosed according to one embodiment of the present invention. The micro-grid system with a power supply, according to one embodiment of the present invention, comprises: a first node having AC power applied thereto from a bus system; a first generator for applying DC power to a second node; a first load for receiving the AC power by being connected to a third node; a second load for receiving the DC power by being connected to the second node; a third load for receiving the AC power by being connected to a fourth node; a first converter for converting the DC power of the second node to AC power, and outputting same; a second converter for converting the DC power of the second node to AC power, and outputting same; and a switch unit for, according to the statuses of the first converter and the second converter, regulating the connection relations between the first node, the third node, the fourth node, the first converter and the second converter.

METHOD FOR CONTROLLING AN UNINTERRUPTABLE POWER SUPPLY

The disclosure relates to a method for controlling an uninterruptable power supply and a respective computer program. The uninterruptable power supply comprises a grid connection, a grid switch connected to the grid connection, a rectifier and an inverter interconnected via a DC link, an energy storage connected to the DC link, a load connection, to which the inverter is connected, and a bypass switch, which is connected in parallel to the rectifier, the DC link and the inverter between the grid switch and the load connection, wherein the grid switch is a mechanical switch and the bypass switch is a semiconductor switch. 1. A method for controlling an uninterruptable power supply ,wherein the uninterruptable power supply comprises a grid connection, a grid switch connected to the grid connection, a rectifier and an inverter interconnected via a DC link, an energy storage connected to the DC link, a load connection, to which the inverter is connected, and a bypass switch, which is connected in parallel to the rectifier, the DC link and the inverter between the grid switch and the load connection;wherein the grid switch is a mechanical switch and the bypass switch is a semiconductor switch; in a normal operation mode in which the bypass switch is opened, the grid switch is closed, the uninterruptable power supply is connected to a grid via the grid connection and connected to a load via the load connection, operating the rectifier in a rectifying mode, in which an AC current from the grid is converted to a DC current supplied to the DC link and operating the inverter to convert the DC current from the DC link into an AC current supplied to the load;', 'upon receiving a fault signal, which signals an electrical fault concerning at least one of the load and the grid, sending a disconnect signal to the grid switch to open the grid switch and disconnect the uninterruptable power supply from the grid; and', 'upon receiving a confirmation signal from the grid switch, which ...

Data aggregation with operation forecasts for a distributed grid node

Data aggregation enables a local control response based on forecasted actions at a consumer node of a distributed grid network. A consumer node includes a local energy meter that receives grid condition information, including an aggregation of multiple inputs indicating an electrical condition of the grid network, local operating conditions at the PCC, and local power demand. The consumer node accesses rate information for the grid network indicating a consumer power price and a market power price. Based on the rate information and the aggregation information, the consumer node calculates an output power to generate with a local power converter, which outputs the power based in accordance with the calculation.

Power grid saturation control with distributed grid intelligence

Distributed grid intelligence enables grid saturation control. A distributed control node can determine that a segment of the power grid exceeds a saturation threshold. A power grid can be saturated by real power when local power sources at customer premises are connected to the grid. The grid saturation threshold can be a point at which real power generation capacity of local energy sources exceeds a threshold percentage of peak real power demand for the power grid segment where the power generation capacity exists. The control node at a consumer node can dynamically adjust a ratio of real power to reactive power for the segment of the power grid as seen from the grid, and reduce grid saturation.

Methods and systems for operating neighbouring microgrids

A method and system for operating neighbouring microgrids is disclosed. The method includes creating a first set of energy management policies associated with a predefined area and a second set of energy management policies associated with a microgrid. The method includes measuring power usage data associated with predefined area and current charge level of batteries within the predefined area. The method further includes determining future power demand of the predefined area, based on predefined analytics performed on the measured power usage data and the current charge level of the batteries. The method includes adapting the data models of predefined area with the data models used in microgrid and utility operations for seamless integration of operations and to optimize overall operations while complying with local, edge and overall policies. The method includes applying the first set of energy management policies within the predefined area based on the determined future power demand.

Command generation device and command generation method

A rotation calculation unit calculates a rotation speed of a virtual generator on the basis of a rotor model to simulate driving of the virtual generator and calculates the rotation speed of the virtual generator. A target power determination unit determines target values of active power and reactive power of an inverter on the basis of the calculated rotation speed. A command generation unit generates a control command for the inverter on the basis of the determined target values of the active power and the reactive power.

Microgrid control design system

Provided herein are embodiments of systems, devices, and methods for a multi-mode, cross-platform design environment to deploy and monitor microgrid controllers rapidly, safely, and inexpensively. A multi-mode environment may run offline, real-time, and live. A cross-platform environment may run on different operating systems and environments. A design system may allow users (e.g., engineers, managers) to design, test, deploy, tune, and monitor microgrid controllers before and after deployment.

VOLTAGE WAVEFORM TRANSIENT IDENTIFICATION AND AUTONOMOUS LOAD COORDINATION

Described are systems and techniques for extracting frequency and voltage harmonic transients corresponding to individual load events. Such systems and techniques can be used to make electrical loads aware of the operation of other loads in an electric grid. Thus, awareness is achieved using information derived only from a utility voltage waveform at a load. Also described are systems and techniques for incorporating such awareness into load controllers which allows loads to autonomously meet system level objectives in addition to their individual requirements. 1. An autonomous load having an input , the autonomous load comprising:a detection circuit coupled to measure one or more signals at the autonomous load;an event identification processor for extracting and identifying a load event corresponding to at least one characteristic of at least one of the one or more signals measured by the detection circuit; andan autonomous load controller configured to receive load event information from the event identification processor and for providing a control signal to the autonomous load in response to the load event information.2. The autonomous load of wherein:the detection circuit comprises a voltage detection circuit coupled to measure a voltage signal at the input of the autonomous load;the event identification processor comprises a transient identification processor for extracting frequency and voltage harmonic transients and identifying an individual load events corresponding to the extracted frequency and voltage harmonic transients; andthe autonomous load controller is configured to receive load event information from the transient identification processor and in response to the load event information provided thereto, provide a control signal to the autonomous load.3. The autonomous load of wherein the autonomous load controller monitors an environment of the load.4. The autonomous load of any of wherein the autonomous load controller updates knowledge of a grid ...

Decentralized false data mitigation for nested microgrids

Systems, methods, techniques and apparatuses of nested microgrids are disclosed. One exemplary embodiment is a method for removing false data in a nested microgrid system, the method comprising: calculating a first local state estimation using a first plurality of local measurements and a second local state estimation using a second plurality of local measurements; calculating, with a central control system, a plurality of global state estimations including a first global state estimation a second global state estimation; performing a first false data detection test using the first local state estimation and one global state estimation of the plurality of global state estimations; performing a second false data detection test using the first global state estimation and the second global state estimation; detecting false data; and updating the first global state estimation, the second global state estimation, or the first local state estimation in response to detecting the false data.

Frequency adjustment method for islanded virtual synchronous micro-grid

The present invention provides a method, a system and a storage medium for frequency adjustment of an islanded virtual synchronous micro-grid. The method includes: performing frequency adjustment on inverters in the micro-grid in a cyclic manner until the respective inverters reach rated frequencies; where each cycle includes: determining, in a differential delay manner, an inverter with a highest active output in the micro-grid as a reference unit, and sending a local output factor of the reference unit as a maximum output factor of a current cycle to other inverters; determining, for each inverter in the micro-grid, an active power adjustment amount of the inverter according to the maximum output factor, a preset rated frequency, a local output factor and an actual angular frequency of the inverter; and performing frequency adjustment on the inverter according to the active power adjustment amount.

Energy search engine methods and systems

Systems and methods dynamically assess energy efficiency by obtaining a minimum energy consumption of a system, receiving in a substantially continuous way a measurement of actual energy consumption of the system, and comparing the minimum energy consumption to the measurement of actual energy consumption to calculate a substantially continuous energy performance assessment. The system further provides at least one of a theoretical minimum energy consumption based at least in part on theoretical performance limits of system components, an achievable minimum energy consumption based at least in part on specifications for high energy efficient equivalents of the system components, and the designed minimum energy consumption based at least in part on specifications for the system components.

Monitoring system and power supply control method

A power supply control method and a monitoring system configured to implement the power supply control method are provided. The monitoring system includes a base station, a drone, and a processor. The base station includes a charging device. The charging device includes a power supply connector and a power source coupled to the power supply connector and outputting electric power through the power supply connector. The drone includes a battery configured to provide electric power to the drone and a charging connector configured to connect the battery and the power supply connector. When the charging connector is connected to the power supply connector, the processor determines an abnormal situation on the power supply connector or the drone according to an electrical characteristic during charging the battery by the power source. The abnormal situation is associated with a foreign object formed on the power supply connector or the drone.

Grid asset manager

An asset manager controls power distribution within an aggregated distributed energy resources system (“DERs system”) having a plurality of assets. The asset manager is configured to operate with a given asset. As such, the asset manager has 1) an interface to receive asset information relating to the given asset and to communicate with another asset manager in the DERs system, and 2) a function generator configured to produce a local cost function using data relating to the given asset only. The local cost function represents a portion of a system cost function for the DERs system. The asset manager also has 3) a controller configured to use the local cost function for the given asset to manage operation of the given asset in the DERs system. In addition, the controller also is configured to determine, using the local cost function, an operating point for the given asset.

Hierarchical Control of Micro-grids

A micro-grid control system has a first 2×2 decoupled controller that controls voltage and voltage angle by adjusting real and reactive power using real time feedback, and a second 2×2 decoupled controller that controls real and reactive power by adjusting voltage and voltage angle using real time feedback. The first 2×2 decoupled controller and second 2×2 decoupled controller together form a hierarchical microgrid control system, where the second 2×2 decoupled controller is a supervisory controller of the first 2×2 decoupled controller. The micro-grid control system may also include a third 2×2 decoupled controller that supervises the second 2×2 controller.

METHOD OF OPERATING AN ENERGY SYSTEM

Method of operating an energy system, said energy system comprising: 113-. (canceled)15. Method according to claim 14 , wherein peak-shaving is carried out exclusively in said second mode.16. Method according to claim 14 , wherein peak shaving can be disabled in said second mode.17. Method according to claim 14 , wherein in said second mode a limitation is imposed on the rate of energy transfer to and/or from said external distribution network.18. Method according to claim 17 , wherein said limitation is removed in said third mode.19. Method according to claim 18 , wherein claim 18 , after removal of said limitation in said third mode claim 18 , said limitation is reinstated only once the system is back in said second mode and the rate of energy transfer with respect to the external network has dropped below the value of said limitation.20. Method according to claim 14 , wherein said controller comprises:a first proportional-integral controller adapted to command said controllable interface so as to attempt to bring said state of charge back up to said second state of charge when it has dropped therebelow, anda second proportional-integral controller adapted to command said controllable interface so as to attempt to bring said state of charge down to said third state of charge when it has risen thereabove.21. Method according to claim 20 , wherein said first and second proportional-integral controllers are arranged to prohibit energy transfer via said interface when in said first mode.22. Method according to claim 14 , wherein said controller is adapted to define an auxiliary state of charge threshold situated between said second and third states of charge above which at least one controllable load takes energy from said bus claim 14 , and below which said controllable load does not take energy from said bus.23. Method according to claim 14 , wherein at least one of said second state of charge and said third state of charge is variable.24. Method according to claim ...

Method and apparatus for minimizing circulating currents in microgrids

A method and apparatus for minimizing circulating currents on a power distribution line. In one embodiment, the method comprises dynamically adjusting a turns ratio of a tap changing transformer, the tap changing transformer coupled to a power grid distribution line that is also coupled to a plurality of microgrid branches wherein at least one microgrid branch of the plurality of microgrid branches comprises a distributed energy resource (DER), based on a reactive power measured locally to the tap changing transformer, to minimize current circulating on the power grid distribution line.

Building management and appliance control system

The present disclosure is directed to energy storage and supply management system. The system may include one or more of a control unit, which is in communication with the power grid, and an energy storage unit that stores power for use at a later time. The system may be used with traditional utility provided power as well as locally generated solar, wind, and any other types of power generation technology. In some embodiments, the energy storage unit and the control unit are housed in the same chassis. In other embodiments, the energy storage unit and the control unit are separate. In another embodiment, the energy storage unit is integrated into the chassis of an appliance itself.

Medium-high voltage energy conversion system, and control method and controller therefor

A medium-high voltage energy conversion system, and a control method and a controller therefor are provided. In the control method, an operation state of the medium-high voltage energy conversion system is acquired. In a case that the system is in a normal operation state, the system is controlled to operate in a first direct circuit current source mode. In a case that the system is in a first fault state in which a direct current grid voltage drops, the system is controlled to operate in a direct current voltage source mode. In a case that the system is in a second fault state in which a direct current grid voltage is in an overvoltage state, the system is controlled to operate in a second direct circuit current source mode.

System and Method for Controlling an Electrical Load

A system and method for controlling a number of load controllers (10), each of which is operatively connected to one or more electrical loads (6) that are connected to a grid, results in a reduction in tracking errors, which arise when aggregated local devices fail to deliver the expected amount of responsive load service. Each load controller (10) monitors the operating frequency of the grid network (8) and is adapted to adjust power consumption of one or more of its electrical loads (6) in response to excursions of the operating network frequency from its nominal value. The load controllers (10) are in communication with a remote controller (14) and aggregated together to provide a responsive load service. The remote controller (14) is adapted to monitor the deviation of grid frequency from its nominal value and to determine adjustments to the responsive load service delivered by the electrical loads of each load controller. The remote controller (14) thereafter sends a correction signal to each load controller (10), which causes the respective load controller (10) to apply a correction to its responsive load service by way of an offset to its power consumption adjustments.

Micro-grid energy management system

Micro-grid energy management system includes distributed power generation and storage devices each configured to generate and store power in a distributed manner, monitor its own status, and transmit data on the monitored status through a different interface, a gateway device connected selectively with the distributed power generation and storage devices through different interfaces and configured to convert the status data received through the interfaces into open data having one predefined data frame format, transmit the converted open data over a network, and provide control signals of the distributed power generation and storage devices received over the network to the distributed power generation and storage devices; and an energy management server configured to perform energy management using the open data transmitted from the gateway device over the network and transmit control signals for controlling and managing the distributed power generation and storage devices to the gateway device over the network.

Building control systems with optimization of equipment life cycle economic value while participating in ibdr and pbdr programs

A system for allocating one or more resources including electrical energy across equipment that operate to satisfy a resource demand of a building. The system includes electrical energy storage including one or more batteries configured to store electrical energy purchased from a utility and to discharge the stored electrical energy. The system further includes a controller configured to determine an allocation of the one or more resources by performing an optimization of a value function. The value function includes a monetized cost of capacity loss for the electrical energy storage predicted to result from battery degradation due to a potential allocation of the one or more resources. The controller is further configured to use the allocation of the one or more resources to operate the electrical energy storage.

Power management system

A town storage battery power conversion device outputs an AC voltage to a distribution system during a power failure. Electric power generated by a solar cell installed in each consumer house is converted into an AC voltage by a solar cell power conversion device and output to a consumer premises distribution system to which a load is connected. In an autonomous operation during a power failure, an operation plan for a distributed power supply is updated in a cycle longer than a cycle of an operation plan for a town storage battery. In the autonomous operation, the town storage battery power conversion device changes an AC voltage frequency according to a difference between electric power output from the town storage battery and the operation plan. The solar cell power conversion device has a function of modifying a control target value for the solar cell according to the AC voltage frequency.

POWER AMOUNT MEASUREMENT SYSTEM, POWER AMOUNT MEASUREMENT METHOD, AND POWER AMOUNT MEASUREMENT DEVICE

When a baseline is in a certain state, a server executes a process including: a step of calculating an amount of power exchanged between a battery and a power grid during the first charging control; a step of calculating an amount of power exchanged between the battery and the power grid during the second charging control; a step of calculating an amount of power exchanged between the battery and the power grid during the first power feeding control; a step of calculating an amount of power exchanged between the battery and the power grid during the second power feeding control; and a step of setting a calibration line for the amount of power. 1. A power amount measurement system comprising:a smart meter that measures an amount of power exchanged between a power grid and a connection target of the power grid;a power storage device that is one of a plurality of electrical devices included in the connection target;a power conversion device that adjusts power to be exchanged between the power grid and the power storage device; anda server that obtains a measurement result of the smart meter and that controls the power conversion device, whereinwhen a baseline indicating power consumption of an electrical device is in a certain state, the server instructs the power conversion device to execute first control to control the power conversion device to exchange power with a first amount of power being employed as an instruction value, the electrical device being other than the power storage device and included in the connection target,the server obtains, from the smart meter, a first measurement result about an amount of power exchanged during an execution period of the first control,when the baseline is in the certain state, the server instructs the power conversion device to execute second control to control the power conversion device to exchange power with a second amount of power being employed as the instruction value, the second amount of power being different from ...

Resiliency Determination in a Microgrid

A method can be used for determining resiliency in a microgrid that includes a number of assets. The method includes obtaining status data about devices used to control the assets as well as about communication resources of this control, determining, based on the status data, the health and availability of each asset to assist each of a plurality of functions for handling disruptive events in the microgrid, determining a resiliency index of the microgrid in performing the plurality of functions, providing the resiliency index to a control system of the microgrid, comparing, in the control system, the resiliency index with a least one threshold, and changing the control of the microgrid if any of the thresholds is crossed. 114-. (canceled)15. A method of determining resiliency in a microgrid comprising a number of assets , where each asset is a different type of electric energy subsystem in the microgrid , the method comprising:obtaining status data about devices used to control the assets as well as about communication resources of this control, where the status data about the devices used to control the assets comprises hardware status data and/or software status data;determining, based on the status data, the health and availability of each asset to assist each of a plurality of functions for handling disruptive events in the microgrid;determining a resiliency index of the microgrid in performing the plurality of functions, the resiliency index being determined based on the individual asset health and availability of each asset concerning all the functions for handling disruptive events;providing the resiliency index to a control system of the microgrid;comparing, in the control system, the resiliency index with a least one threshold; andchanging the control of the microgrid if any of the thresholds is crossed.16. The method according to claim 15 , wherein determining the health and availability of each asset comprises determining the capacity of each asset to ...

System and Method For Controlling States of a DC and AC Bus Microgrid

Systems and methods are described herein for controlling the states of a microgrid module. The microgrid module includes transformers and/or power converters necessary for modifying the input AC or DC power sources to meet the required characteristics of the output power. The microgrid module further comprises a control software module installed on a microgrid computer. The control software module receives data associated with the operating state of the microgrid module. The control software module can access rules associated with each microgrid module operating state to determine whether the microgrid module must transition to a different operating state. If a transition is appropriate, the control software module can apply commands to transition the microgrid module to a different operating state. The control software module can continue to monitor the microgrid module to determine when another state transition is appropriate.

Control method of a virtual generator

A method for controlling a virtual generator including at least one renewable power source, an accumulation system including a power and/or energy reserve, an inverter and a control law, the virtual generator delivering an active P/reactive Q electrical power of voltage V and of current I to a microgrid, the voltage V and current I having a frequency f, the active P/reactive Q electrical power controlling, via droop control, the frequency f and the RMS voltage V rms of the voltage V, respectively, the method including control of the virtual generator via the control law for which it carries out an adjustment of the active P/reactive Q power delivered to the microgrid, the adjustment being capable of compensating for a variation in the active/reactive power consumed by the microgrid.

PHOTOVOLTAIC GRID CAPACITY SENSOR

In one aspect, a method to determine a capacity of a microgrid includes applying a current test load to the microgrid and measuring a current through an energy storage device, the current indicating a charging status of the energy storage device based on a current load being applied to the microgrid through activated power outlets being served by the microgrid and the current test load, the energy storage device being integrated with the microgrid. The method also includes, responsive to a determination that the measured current based on the current load being applied to the microgrid and the current test load indicates that the energy storage device is discharging, determining the capacity of the microgrid, wherein the capacity is the current load being applied to the microgrid through activated power outlets and a test load applied to the microgrid immediately preceding the current test load. 1. A system to determine a capacity of a microgrid , the system comprising:one or more non-transitory machine-readable mediums configured to store instructions; and apply a current test load to the microgrid;', 'measure a current through an energy storage device, the current indicating a charging status of the energy storage device based on a current load being applied to the microgrid through activated power outlets being served by the microgrid and the current test load, the energy storage device being integrated with the microgrid; and', 'responsive to a determination that the measured current based on the current load being applied to the microgrid and the current test load indicates that the energy storage device is discharging, determine the capacity of the microgrid, wherein the capacity is the current load being applied to the microgrid through activated power outlets and a test load applied to the microgrid immediately preceding the current test load., 'one or more processors configured to execute the instructions stored on the one or more non-transitory machine- ...

Method and instrumentation for sustainable energy load flow management system performing as resilient adaptive microgrid system

Disclosed is a method and instrumentation for predictive and adaptive controllers devised to ensure uninterrupted operation of standalone electrical supply systems powered by sustainable energy sources. The device, herein referred to as SelfMaster, is an expert system that manages the energy conversion, storage, and consumption in an isolated electric grid based on data collected during past and current operation of the system and predicted future states of the primary energy sources, storage level, and demand. The sustainable primary energy sources managed by SelfMaster may include, but are not limited to, wind force, solar radiation, and biofuels. The energy storage system is a combination of batteries, hydrogen, biofuel, and hot water tanks. Electric demand consists of critical, non-critical, and deferrable loads identified according to the activities supported by the supply system.

Method of efficiently managing energy

A method is provided for managing energy. The method comprises collecting information relating to amounts of energy stored by a plurality of members of a group, and relating to energy requirements of the members. The method further comprises determining a price for distributing energy to a non-member of the group, determining whether to supply energy stored by the members to the non-member at the determined price, and issuing instructions to distribute energy upon determining that energy stored by the plurality of members should be supplied to the non-member.

System and methods to aggregate instant and forecasted excess renewable energy

Systems and methods dynamically measure, ascertain, and compare a local facility load with local renewable energy generation in substantially real time and determine whether excess energy exists from the local distributed renewable energy resource. Further, systems and methods forecast the available excess energy from the local distributed renewable energy resources for acquisition to third parties. A pulse width modulation (PWM) controller permits delivery of acquired increments of the available excess renewable energy.

Dc voltage brownout protection for parallel-connected fuel-cell power plants in islanded mode

An illustrative example fuel cell power plant includes a cell stack assembly, a single stage convertor configured to couple the cell stack assembly to a power network, and a controller that is configured to determine whether the fuel cell power plant has a DC voltage brownout condition during an islanded mode of operation. The controller dynamically adjusts the frequency droop gain of the power plant using an offset while satisfying at least three criteria of a set of criteria consisting of (i) avoiding overloading other fuel cell power plants of the power network, (ii) avoiding exceeding a maximum load step-up capability of the power network, (iii) avoiding exceeding a maximum load step-up capability of the fuel cell power plant, (iv) maintaining a system frequency within an acceptable frequency range, and (v) avoiding repeating the DC voltage brownout condition.

Segment protected parallel bus

A Segment Protected Parallel Bus is for an uninterruptible power supply to electric consumers, whereby at least two electrical distributed power generation units, are connected electrically parallel, each distributed power generation unit is coupled to at least one electric consumer bus. At least two electrical protection zones for isolating electrical faults and multiple protection zones with instantaneous tripping for the electrical parallel connection of consumer networks are provided in a mutual electrical ring connection. In the ring connection, a first switching element with a switching time of less than 10 ms for the electrical decoupling of the consumer buses from one another starting at a predetermined voltage drop, which is established according to load requirements, is arranged between each protection zone with instantaneous tripping and an adjacent protection zone in the first ring direction with instantaneous tripping and an adjacent protection zone in the second ring direction with instantaneous tripping.

Method for load flow analysis of a power distribution system

A power distribution system configured as a radial network includes buses having respective voltages, and distribution lines having respective currents. The radial network interconnects the buses with the distribution lines in a tree-like manner. A bus has a link to at least two distribution lines. The bus voltages and distribution line currents are determined by a processing circuitry configured to receive a Branch Matrix (BM), iteratively determine currents for the distribution lines and voltages for each of the buses until a difference is below a predetermined tolerance, and output final bus voltages and final distribution line currents. The circuitry iteratively determines the currents by determining a current matrix (CM) using the BM, and by determining the currents for the plurality of distribution lines in a zig zag manner over the matrix elements in the CM. The system finds a solution using fewer iterations than the backward forward sweep method.

Protection system for limiting the impact of the disruptions of an external electrical network on the local network of a site connected to the external network

Protection system for limiting the impact of disruptions of an external urban or industrial electrical network on a local electrical network of a site which is connected to the external network and which includes at least one local electric power source, referred to as “local source” connected to the local network and capable of injecting the surplus electric power into the external network, with the protection system including a synchronous machine connected to the local network which is itself connected to the external network by way of a choke, referred to as “network choke.” The protection system includes at least a local choke which is associated with the local source and which is connected to the local network between this local source and the synchronous machine.

Hybrid inverter power control system for pv string, battery, grid and back-up loads

A string inverter for use with a photovoltaic array includes at least one string-level DC input channel for receiving DC power from the photovoltaic array, and at least one input-output channel for connecting the string inverter to a battery pack. The string inverter also includes a DC to AC inverter having an AC output, and a switch configured to control a flow of power through the string inverter. When the switch is in a first state, AC power can flow from the string inverter to a load side of a customer utility meter and one or more back-up loads, in a second state, power can flow from the load side of a customer utility meter to the one or more back-up loads bypassing the string inverter, and in a third state, all circuits coupled to the output of the string inverter are electrically disconnected from the string inverter.

Charging station for physiological monitoring device

A charging station for providing power to a physiological monitoring device can include a charging bay and a tray. The charging bay can include a charging port configured to receive power from a power source. The tray can be positioned within and movably mounted relative to the charging bay. The tray can be further configured to secure the physiological monitoring device and move between a first position and a second position. In the first position, the tray can be spaced away from the charging port, and, in the second position, the tray can be positioned proximate the charging port, thereby allowing the physiological monitoring device to electrically connect to the charging port.

Micro grid stabilization device

A micro grid stabilization device coupled to a DC bus and an AC grid in parallel is provided. A DC power generation apparatus provides power to the DC bus. An AC power generation apparatus provides power to the AC grid. A converter is coupled between the DC bus and the AC grid to transform the voltage of the DC bus and provide the transformed voltage to the AC grid. When the voltage of the DC bus or the AC grid is unstable, the micro grid stabilization device provides power to at least one of the DC bus and the AC grid to stabilize the power of the DC bus and the AC grid.

Method and apparatus for control of intelligent loads in microgrids

A method and apparatus for controlling a microgrid load. In one embodiment, the method comprises measuring at least one grid parameter of a microgrid transmission line coupled to a load in a microgrid; computing, using the at least one grid parameter and a droop control technique, at least one virtual set-point; determining a modification to operation of the load based on the at least one virtual set-point; and modifying operation of the load based on the modification.

POWER INTERCHANGE APPARATUS, COMPUTER READABLE STORAGE MEDIUM AND POWER INTERCHANGE METHOD

Included are: a performance information obtaining unit that obtains, for each of a plurality of first power customers that configure a first community, information about a power interchange performance between the first power customer and the first community; a contribution degree determination unit that determines a contribution degree of at least one of the plurality of first power customers to a surplus power amount of the first community in a certain time period, based on information about the performance obtained by the performance information obtaining unit. 1. A power interchange apparatus comprising:a performance information obtaining unit that obtains, for each of a plurality of first power customers that configure a first community, information about a power interchange performance between the first power customer and the first community;a contribution degree determination unit that determines a contribution degree of at least one of the plurality of first power customers to a surplus power amount of the first community in a certain time period, based on information about the performance obtained by the performance information obtaining unit;a request obtaining unit that obtains an interchange request from at least one of the plurality of first power customers, to request for interchanging at least a part of surplus power of the first community in a future time period to a second community that is different from the first community;an expectation information obtaining unit that obtains information indicating an expected value of the surplus power amount of the first community in the future time period; andan interchange amount determination unit that determines a power amount to be interchanged from the first community to the second community in the future time period, based on: (i) the expected value of the surplus power amount indicated by the information obtained by the expectation information obtaining unit; and (ii) the contribution degree in the ...

Electrical energy storage system with cascaded frequency response optimization

A frequency response controller includes a high level controller configured to receive a regulation signal from an incentive provider, determine statistics of the regulation signal, and use the statistics of the regulation signal to generate a frequency response midpoint. The controller further includes a low level controller configured to use the frequency response midpoint to determine optimal battery power setpoints and use the optimal battery power setpoints to control an amount of electric power stored or discharged from a battery during a frequency response period.

Electrical energy storage system with variable state-of-charge frequency response optimization

A frequency response optimization system includes a battery configured to store and discharge electric power, a power inverter configured to control an amount of the electric power stored or discharged from the battery at each of a plurality of time steps during a frequency response period, and a frequency response controller. The frequency response controller is configured to receive a regulation signal from an incentive provider, determine statistics of the regulation signal, use the statistics of the regulation signal to generate an optimal frequency response midpoint that achieves a desired change in a state-of-charge (SOC) of the battery while participating in a frequency response program, and use the midpoints to determine optimal battery power setpoints for the power inverter. The power inverter is configured to use the optimal battery power setpoints to control the amount of the electric power stored or discharged from the battery.

Building management system with electrical energy storage optimization based on statistical estimates of IBDR event probabilities

A central plant that generates and provides resources to a building. The central plant includes an electrical energy storage subplant configured to store electrical energy purchased from a utility and to discharge the stored electrical energy. The central plant includes a plurality of generator subplants that consume one or more input resources. The central plant includes a controller configured to determine, for each time step within a time horizon, an optimal allocation of the input resources and the output resources for each of the subplants in order to optimize a total monetary value of operating the central plant over the time horizon. The total monetary value includes revenue from participating in incentive-based demand response programs as well as costs associated with resource consumption, equipment degradation, and losses in battery capacity.

Microgrid capable inverter device and method of controlling same

본 발명은 마이크로그리드용 인버터 장치 및 이를 제어하는 방법에 관한 것으로, 부하에 가해지는 전압 파형 및 전류 파형을 감지하는 파형 감지부, 감지된 전압 파형 및 전류 파형을 토대로 정현파 발생 여부를 판단하고, 판단 결과에 따라 전압 제어 또는 저차 고조파 보상을 수행하는 제어부 및 상기 제어부로부터 수신되는 제어신호에 따라 온/오프 되면서 정현파 형태의 전압 파형을 생성하고, 생성된 정현파 형태의 전압 파형을 부하측으로 공급하는 스위칭부를 포함한다.

Integrate Electric Energy Control System Based On ESS Distributed Control

본 발명의 특징에 따르면, 스마트그리드(SG) 내에 배치된 각 가구들을 복수 개의 로컬ESS영역(Ea 내지 Ed)으로 그룹핑하여 각 로컬ESS영역 별로 수급되는 전력을 통합제어하는 ESS 분산제어 기반의 스마트그리드 통합전력 제어시스템에 있어서, 각 로컬ESS영역별로 배치되어 연결망(R)을 통해 상호 데이터송수신 및 전력수급이 가능하게 연결되고, 신재생에너지를 이용하여 생성된 전력을 해당 로컬ESS영역에 포함된 각 가구에 공급하며, 잉여전력은 배터리(260)에 저장하는 로컬장치부(200); 및 상기 연결망(R)을 통해 각 로컬ESS영역과 상호 데이터송수신 및 전력수급이 가능하게 연결되어 상기 스마트그리드(SG) 내의 일위치에 배치되며, 각 로컬ESS영역의 전력수급 상태를 모니터링하여 설정치보다 전력생성량 또는 전력저장량이 부족한 로컬ESS영역에게 전력생성량 또는 전력저장량이 충분한 로컬ESS영역의 생성된 전력 및 저장된 전력이 공급되도록 통합제어하는 중앙장치부(100);를 포함하는 ESS 분산제어 기반의 스마트그리드 통합전력 제어시스템이 제공된다. According to an aspect of the present invention, there is provided an ESS distributed control-based smart grid for grouping each furniture placed in a smart grid (SG) into a plurality of local ESS areas (Ea to Ed) In the integrated power control system, data is transmitted to each local ESS area and connected to each other through a connection network (R) so that data can be transmitted and received and power is supplied and received. A local device unit 200 for storing the surplus power in the battery 260; And the local ESS area are connected to each other through a connection network (R) so as to transmit and receive data and receive power, and are arranged at a position in the smart grid (SG). The power supply status of each local ESS area is monitored And a central device unit (100) for integrally controlling the generated power and the stored power of the local ESS area with sufficient power generation amount or power storage amount to the local ESS area where the power generation amount or the power storage amount is insufficient, and an ESS distributed control based smart A grid integrated power control system is provided.

Apparatus and method for providing power interface

本文描述的方面和实施方式针对电源接口装置，其包括被配置为耦合到电力公共设施的第一电源接口和被配置为耦合到包括一个或多个电源以及一个或多个负载的微电网的第二电源接口，一个或多个电源包括发电机。电源接口装置还包括耦合到第一电源接口和第二电源接口的电源转换电路和耦合到电源转换电路的控制器。控制器被配置为通过至少以下操作来允许在以第一频率与电压操作的电力公共设施和以第二频率与电压操作的微电网之间衔接：检测发电机的操作频率并且基于发电机的操作频率来控制在电力公共设施和微电网之间的功率流。

Switchgear load sharing for oil field equipment

A hydraulic fracturing system for fracturing a subterranean formation is disclosed. In an embodiment, the system may include a plurality of electric pumps fluidly connected to a well associated with the subterranean formation and powered by at least one electric motor, and configured to pump fluid into a wellbore associated with the well at a high pressure so that the fluid passes from the wellbore into the subterranean formation and fractures the subterranean formation; at least one generator electrically coupled to the plurality of electric pumps so as to generate electricity for use by the plurality of electric pumps; and at least one switchgear electrically coupled to the at least one generator and configured to distribute an electrical load between the plurality of electric pumps and the at least one generator.

System and methods for autonomous control of isolated microgrid

충전량에 따라 직접 기준주파수를 변경하고 변경된 기준주파수를 갖는 전력을 공급하는 하나 이상의 배터리시스템, 배터리시스템이 공급한 전력에서 기준주파수를 계측한 뒤, 계측된 기준주파수를 기준으로 발전 또는 발전 중지 동작을 하는 하나 이상의 발전기 및 배터리시스템이 공급한 전력에서 기준주파수를 계측한 뒤, 계측된 기준주파수를 기준으로 병입 또는 병입 해제 동작을 하는 하나 이상의 부하를 포함하는 독립형 마이크로그리드 자율제어 시스템에 관한 것이다. One or more battery systems that directly change the reference frequency according to the amount of charge and supply the power having the changed reference frequency, measure the reference frequency at the power supplied by the battery system, and then perform the power generation or power generation stop operation based on the measured reference frequency Grid autonomous control system comprising at least one generator for measuring a reference frequency at a power supplied by at least one generator and a battery system, and then performing a feed-in or feed-back operation based on the measured reference frequency.

Patient monitoring systems, devices and methods

환자의 생리학적 파라미터를 모니터링하기 위한 다양한 환자 모니터링 시스템, 디바이스 및 방법이 개시된다. 본 개시는 서로 정합되도록 구성된 일회용 부분 및 재사용 가능 부분을 포함하는 심전도(ECG) 디바이스에 관련된다. 본 개시는 또한, 혈압 커프에 부착되고 이에 공기를 공급하도록 구성된 혈압 모니터를 설명한다. 혈압 모니터는 주변 공기가 하우징의 내부에 들어가는 것을 허용하도록 구성되고, 액체가 그의 내부로 들어가는 것을 방지하도록 추가적으로 구성된 공기 흡입구를 포함할 수 있다. 혈압 모니터는 모니터 내의 공기 펌프의 동작 특성을 동적으로 제어할 수 있다. 본 개시는 또한, 환자에게 부착을 허용하도록 구성된 탈착 가능한 거치대 및 환자 모니터를 설명한다. 본 개시는 하나 이상의 생리학적 디바이스에 전력을 제공하기 위한 충전 스테이션을 추가적으로 설명한다.

Optimization of microgrid energy use and distribution

An energy distribution may include a server and one or more databases. The system may communicate with an energy provider to receive energy provider data, at least one information collector to receive information collector data such as individualized energy usage data, customer preferences, and customer or location characteristics, and the one or more databases for receiving data for optimization. The system may calculate a cost of service or avoided cost using at least one of the individualized energy usage data and a system generation cost at a nearest bus. The system may also forecast individualized demand by end-use, individualized demand by location, energy prices, or energy costs. The system may optimize energy distribution, energy use, cost of service, or avoided cost using the forecasted individualized demand by end-use, the forecasted individualized demand by location, the forecasted energy prices, and the forecasted energy costs.

Optimization of microgrid energy use and distribution

Systems and methods for energy optimization may receive receiving energy provider data, near-real time individualized energy usage data for each of a plurality of end-uses or near-real time individualized whole premise energy usage data, customer preferences, and near-real time and forecasted weather information. The systems and methods may forecast, for a selected time period, individualized energy usage for each of the plurality of end-uses or individualized whole premise energy usage data for a customer location using: (1) the energy provider data, (2) the near-real time individualized energy usage data, (3) the customer preferences, and (4) the near-real time and forecasted weather information. The systems and methods may optimize, for the selected time period, energy usage at the customer location using (1) the individualized energy usage, (2) the energy provider data, and (3) the customer preferences.

Energy management method using utility-generated signals

An energy management method for controlling electrical power consumption in each of a plurality of residential circuits having a plurality of loads. Each residential circuit is provided with a variable limit demand controller which includes means for receiving utility-generated demand limit signals from a remote location. A demand limit is established for each of the residential circuits which is independent of which of the specific loads in the circuit are responsible for the demand. Signals are generated by the utility from a remote location to vary the limit proportionately in all of the residential circuits. In a preferred embodiment, in which the loads in each of the circuits include both resistive and reactive loads, each circuit is provided with separate variable limit demand controllers for the resistive loads and for the reactive loads. Separate demand limits are established for each of the residential circuits and utility-generated signals are sent from a remote location to each of the demand controllers to vary the resistive and reactive limits proportionately in all of the residential circuits. The resistive and reactive demand limits are adjustably varied to improve the power factor of the load on the utility power-generating facilities.

Hierarchical implicit controller for shielded system in a grid

시스템의 제어기가 알려져 있지 않을 때 또는 시스템의 전달 함수가 알려져 있지 않을 때, 시스템들, 예컨대, 시스템들의 난방 및/또는 냉방 및 시스템들의 클러스터들을 적어도 부분적으로 스티어링하기 위한 시스템 또는 방법이 설명된다. 시스템 또는 시스템들의 클러스터에 에너지를 제공하고 바람직하게는 용량 문제들과 같은 공통 제약조건들을 관리하기 위한 에너지 흐름, 예컨대, 난방/냉방/전기 에너지의 스티어링이 설명된다.

Microgrid system including electric power load

본 발명의 일 실시예에 의한 마이크로그리드 시스템에 포함되는 부하는, 전력을 발생시키는 적어도 하나 이상의 구성 요소를 포함하는 분산 전원; 과 사전에 구축된 상기 마이크로그리드 시스템에 상기 부하가 추가되는 경우, 상기 부하의 부하데이터를 측정하여 제1부하패턴을 도출하고 상기 제1부하패턴을 사전에 설정된 부하타입별 부하패턴과 비교한 후 비교 결과에 기초하여 상기 분산 전원을 운영하는 제어부를 포함한다.

BATTERY ENERGIZED MECHANIZED MINING PIQUE LIFTING SYSTEM

QUE COMPRENDE UNA O MAS BATERIAS DE ION-LITIO, CONECTADAS CON UNO O MAS MOTORES ELECTRICOS, A TRAVES DE UNO O MAS RESPECTIVOS IMPULSORES DE FRECUENCIA VARIABLE QUE HABILITAN A LAS BATERIAS PARA ENERGIZAR A LOS MOTORES ELECTRICOS CUANDO EL ELEVADOR ASCIENDE Y RECARGAR LAS BATERIAS CUANDO DESCIENDE, EN DONDE, POR CADA IMPULSOR DE FRECUENCIA VARIABLE SE INCLUYE UN RESISTOR DE FRENADO DINAMICO PARA AYUDAR EN EL FRENADO DINAMICO DE ESOS MOTORES. EL MENCIONADO SISTEMA IMPULSOR COMPRENDE ADEMAS, UN CONTROLADOR PARA UN OPERADOR, PARA IMPULSAR ESE ELEVADOR HACIA ADELANTE Y HACIA ATRAS; UN CONTROLADOR DE VELOCIDAD DE CIRCUITO CERRADO Y TACOMETRO MONTADO EN UN EJE DE ESE MOTOR; Y UN CONECTOR PARA CARGAR ESAS BATERIAS USANDO UN CARGADOR DE BATERIAS WHICH INCLUDES ONE OR MORE LITHIUM-ION BATTERIES, CONNECTED TO ONE OR MORE ELECTRIC MOTORS, THROUGH ONE OR MORE RESPECTIVE VARIABLE FREQUENCY DRIVERS THAT ENABLE THE BATTERIES TO ENERGIZE THE ELECTRIC MOTORS WHEN THE ELEVATOR RAISES AND RECHARGES THE BATTERIES IT DESCENDES, WHERE, FOR EACH VARIABLE FREQUENCY IMPELLER, A DYNAMIC BRAKING RESISTOR IS INCLUDED TO HELP IN THE DYNAMIC BRAKING OF THOSE MOTORS. THE MENTIONED DRIVE SYSTEM ALSO INCLUDES, A CONTROLLER FOR AN OPERATOR, TO DRIVE THAT ELEVATOR FORWARD AND BACKWARD; A CLOSED CIRCUIT SPEED CONTROLLER AND TACHOMETER MOUNTED ON A SHAFT OF THAT ENGINE; AND A CONNECTOR TO CHARGE THOSE BATTERIES USING A BATTERY CHARGER

Photovoltaic power generation system and fault detection method therefor

本发明提供一种光伏发电系统及其故障检测方法，其中，该光伏发电系统包括至少一个光伏发电微网和能够经由英特网与各光伏发电微网通信的中心服务器，并且各光伏发电微网包括：多个光伏发电节点，各光伏发电节点包括光伏发电组件、用于采集光伏发电节点的状态参数的传感器模块以及用于无线发送光伏发电节点的状态参数的无线通信模块；微网本地服务器，其能够接收各光伏发电节点的状态参数，确定各光伏发电节点的运行状态，并将所接收到的状态参数和所确定的运行状态经由英特网发送至中心服务器。本发明具有灵活的多微网结构，能够对每个光伏发电节点的工作状态参数进行精确监测，数据的网络结构层次分明，能够提高光伏发电系统的工作效率。

METHOD FOR DISTRIBUTING AN ELECTRIC ENERGY FROM SOLAR ENERGY TO A PLURALITY OF GROUPS OF AT LEAST ONE ELECTRICAL INSTALLATION

Procédé de distribution d'une énergie électrique issue d'une énergie solaire à des groupes (Gk), comprenant les étapes, pour chaque groupe, de - définir un profil de consommation ; - pour chaque nouvelle journée, définir une quantité d'énergie journalière disponible (Ek) et allouer au groupe un crédit d'énergie (Crk (Ti)) pour chaque heure de la nouvelle journée ; - à un temps T, estimer une quantité d'énergie consommée courante (Indk (T)) qui a été consommée par le groupe, et estimer une quantité d'énergie consommée précédente qui a été consommée à la fin d'une heure précédente ; - au temps T, estimer une quantité d'énergie disponible (Edisp (k, T)) ; - si une différence entre la quantité d'énergie consommée courante et la quantité d'énergie consommée précédente est supérieure ou égale à la somme de la quantité d'énergie disponible et d'un crédit d'énergie alloué pour l'heure courante, couper la distribution d'énergie électrique jusqu'au début d'une heure suivante. A method of distributing electrical energy from solar energy to groups (Gk), comprising the steps, for each group, of - defining a consumption profile; for each new day, define a quantity of available daily energy (Ek) and allocate to the group an energy credit (Crk (Ti)) for each hour of the new day; at a time T, estimate a quantity of current consumed energy (Indk (T)) that has been consumed by the group, and estimate a quantity of consumed energy that has been consumed at the end of a previous hour; at time T, estimate a quantity of available energy (Edisp (k, T)); - if a difference between the amount of current energy consumed and the amount of energy consumed is greater than or equal to the sum of the amount of energy available and an energy credit allocated for the current time, cut the distribution of electrical energy until the beginning of the next hour.

Energy gateway, household appliance, direct-current micro-grid system and energy management method therefor.

Una pasarela de energía, un electrodoméstico, un sistema de microrred de corriente continua y un método de gestión de energía para el mismo. La pasarela de energía comprende: un extremo (1) de entrada de corriente continua para conectarse a un extremo de salida de corriente continua de un aparato (2) externo de generación de potencia solar. La pasarela de energía comprende, además, un primer extremo de salida de corriente continua y/o un segundo extremo de salida de corriente continua para suministrar potencia a un aparato eléctrico (4) externo de corriente continua, en donde el primer extremo de salida de corriente continua se conecta directamente al extremo de entrada de corriente continua y el segundo extremo de salida de corriente continua se conecta al extremo de entrada de corriente continua a través de un aparato (5) de transformación de tensión de corriente continua. La pasarela de energía, el electrodoméstico y el sistema de microrred de corriente continua hacen que sea posible prescindir de un inversor conectado a la red, reducen la inversión en el dispositivo y los enlaces de conversión de energía eléctrica, y mejoran la eficacia de utilización de la nueva generación de potencia de energía fotovoltaica. Además, puesto que el electrodoméstico suministra directamente potencia con una corriente continua, puede prescindirse de un módulo interno de rectificación, para reducir la inversión en el dispositivo y las pérdidas por conversión de energía eléctrica, y eliminar múltiples problemas; por ejemplo, que la contaminación armónica producida por el electrodoméstico en la red de potencia influya en la calidad de la energía eléctrica.

METHOD FOR DISTRIBUTING AN ELECTRIC ENERGY FROM SOLAR ENERGY TO A PLURALITY OF GROUPS OF AT LEAST ONE ELECTRICAL INSTALLATION

Procédé de distribution d'une énergie électrique issue d'une énergie solaire à des groupes (Gk), comprenant les étapes, pour chaque groupe, de - définir un profil de consommation ; - pour chaque nouvelle journée, définir une quantité d'énergie journalière disponible (Ek) et allouer au groupe un crédit d'énergie (Crk (Ti)) pour chaque heure de la nouvelle journée ; - à un temps T, estimer une quantité d'énergie consommée courante (Indk (T)) qui a été consommée par le groupe, et estimer une quantité d'énergie consommée précédente qui a été consommée à la fin d'une heure précédente ; - au temps T, estimer une quantité d'énergie disponible (Edisp (k, T)) ; - si une différence entre la quantité d'énergie consommée courante et la quantité d'énergie consommée précédente est supérieure ou égale à la somme de la quantité d'énergie disponible et d'un crédit d'énergie alloué pour l'heure courante, couper la distribution d'énergie électrique jusqu'au début d'une heure suivante.

System and method for controlling an electrical load

Energization control for establishing microgrids

Methods for energizing microgrids and microgrid energy distribution systems are provided. A method for energizing a microgrid includes energizing a storage management system (SMS) that is configured to control power distribution in the microgrid. The method further includes connecting a plurality of reactive components to the SMS based on a configuration control programmed into the SMS. The method yet further includes ramping up an output voltage of the SMS based on limiting inrush currents of the plurality of reactive components in the microgrid.

Control of a microgrid

The present disclosure relates to a control method performed in a microgrid1. The microgrid comprises at least one electrical power source 2 and/or 3 configured for injecting electrical power into the microgrid, a first point of common coupling (PCC)

Energization control for establishing microgrids

Methods for energizing microgrids and microgrid energy distribution systems are provided. A method for energizing a microgrid includes energizing a storage management system (SMS) that is configured to control power distribution in the microgrid. The method further includes connecting a plurality of reactive components to the SMS based on a configuration control programmed into the SMS. The method yet further includes ramping up an output voltage of the SMS based on limiting inrush currents of the plurality of reactive components in the microgrid.

Energy search engine with autonomous control

Systems and methods dynamically assess energy efficiency by obtaining a minimum energy consumption of a system, receiving in a substantially continuous way a measurement of actual energy consumption of the system, and comparing the minimum energy consumption to the measurement of actual energy consumption to calculate a substantially continuous energy performance assessment. The system further provides at least one of a theoretical minimum energy consumption based at least in part on theoretical performance limits of system components, an achievable minimum energy consumption based at least in part on specifications for high energy efficient equivalents of the system components, and the designed minimum energy consumption based at least in part on specifications for the system components.

Power supply and storage device for improving drilling rig operating efficiency

An energy supply and storage system for a rig power supply system is disclosed for a rig power supply system of the type having a power generator coupled to rig loads and motors via a bus. The energy supply and storage device is a power supply in parallel with the rig motors and adapted for receiving energy generated by the generator in excess of demand. The energy storage system is in communication with the power supply for receiving and storing the excess energy, with the power supply being adapted to draw energy from the storage system when the rig motor demand exceeds the capacity of the generator.

Energy storage and power supply system

An energy storage and power supply system includes an energy storage element 100, a charging module 200 for charging the energy storage element from an AC mains power supply 300, a power supply conversion module 400 for converting electrical energy from the energy storage element to be supplied to an external load 500, an electrical energy generation device 600, such as a solar and/or wind power generation device, which may also be used to charge the energy storage device, and a selection control module 700 for actuating control switches 210, 410, 610 to control power flow within the system. The selection control module provides multiple control modes, to automatically adjust electrical energy supply and electrical energy storage and reduce a waste of electrical energy effectively.

Energy gateway, household appliance, direct-current micro-grid system and energy management method therefor

An energy gateway, a household appliance, a direct-current micro-grid system and an energy management method therefor. The energy gateway comprises: a direct-current input end (1) for being connected to a direct-current output end of an external solar power generation apparatus (2). The energy gateway further comprises a first direct-current output end and/or a second direct-current output end for supplying power to an external direct-current electrical appliance (4), wherein the first direct-current output end is directly connected to the direct-current input end, and the second direct-current output end is connected to the direct-current input end via a direct-current voltage transformation apparatus (5). The energy gateway, the household appliance and the direct-current micro-grid system make a grid-connected inverter dispensable, reduce device investment and electric energy conversion links, and improve the utilization efficiency of new energy photovoltaic power generation. Furthermore, since the household appliance directly supplies power with a direct current, an internal rectification module can be removed, so as to reduce device investment and electric energy conversion loss, and eliminate multiple problems; for example, electric energy quality being influenced by harmonic pollution brought by the household appliance to a power grid.

DC micro-grid

Systems and methods are provided for creating and operating a Direct Current (DC) micro-grid. A DC micro-grid may include power generators, energy storage devices, and loads coupled to a common DC bus. Power electronics devices may couple the power generators, energy storage devices, and loads to the common DC bus and provide power transfer.

Electronic smart meter enabling demand response and method for demand response

本发明提供一种可进行能源需求响应的智能电子计量装置及需求响应方法，通过取得顾客的选择和反应信息，能够做出主动的需求响应，为此，该电子计量装置内置有至少一个综合监视模块，并具备微处理器，以根据电力价目表的电力控制程序向内置的相关综合监视模块传送电力控制指令，同时通过上位通信模块将储存在存储器中的计量和监视数据上传给主服务器。

Integrated solar panel

公开了一种太阳能电池板(400)，其可以菊花链的方式与其它太阳能电池板(100a‑n)连接。当太阳能电池板(400)感测到输入交流功率(112)时，太阳能电池板(400)自动地产生输出交流(AC)功率(195)，输出交流(AC)功率(195)与进入到太阳能电池板(400)内的输入交流功率(112)并联，以使太阳能电池板(400)在该状态下作为从太阳能电池板操作。当太阳能电池板(400)未能检测到进入到所述太阳能电池板(400)内的输入交流功率(112)时，太阳能电池板(400)自动地产生独立的交流输出功率(195)，其中所述太阳能电池板(400)在这种状态下作为主太阳能电池板操作。太阳能电池板(400)产生独立的输出交流功率(195)，而对由公用电网和/或太阳能电池板(400)外部的其它交流功率源产生的输入交流功率(112)没有任何依赖性。

Seamless switching method and system for micro-grid system

A seamless switching method and system for a micro-grid system. The method comprises: a first voltage collection module collecting values of various phase voltages at a grid side connected thereto; a PCS determining the power-loss ratio of the current voltage value of each phase voltage relative to a standard value, and counting the sum of the number of times of the power-loss ratios of various phase voltages being lower than a predetermined value; and if the PCS judges that the value of the sum is larger than a threshold value, executing V/F switching, and at the same time, triggering a PCC switch between the grid connected thereto and a micro-grid to be disconnected. By means of the manner of switching from on-grid to off-grid, the current impact is very small, and the smooth switching from on-grid to off-grid can be achieved.

Power system and method using voltage waveform signal

本文公开了从电源提供电力；并通过控制由所述电源生成的AC电压的波形，信号化所述电源的状态。所述状态可以包括例如电源的容量。在一些实施例中，可以控制AC电压的频率以信号化所述状态。电源可以包括例如不间断电源(UPS)，信号化所述电源的状态可以包括控制UPS的逆变器，以信号化所述状态。还描述了相关系统。

Arrangement for uninterruptible power supply

Eine Anordnung (1) zur unterbrechungsfreien Stromversorgung eines Netzabschnitts (2) ist an diesen über einen ersten Anschlusspunkt (3) und an ein Versorgungsnetz (4) über einen zweiten Anschlusspunkt (3') angebunden und umfasst einen Speicher (6), der über einen bidirektionalen Wechselrichter (7) mit dem ersten Anschlusspunkt (3) zum Austausch von Blindleistung und Wirkleistung verbunden ist, und eine Entkopplungsimpedanz (8), über die der erste Anschlusspunkt (3) mit dem zweiten Anschlusspunkt (3') verbunden ist. Die Entkopplungsimpedanz (8) weist einen solchen Induktivitätswert auf, dass der Wechselrichter (7) durch Bereitstellung von Blindleistung im Fall eines Kurzschlusses des Versorgungsnetzes (4) bis zu einer Trennung des Netzabschnitts (2) von diesem eine Wechselspannung am Anschlusspunkt (3) auf oder über einem Wert von 80% der Nennspannung des Versorgungsnetzes (4) zu halten vermag. Der mindestens eine Wechselrichter (7) ist dazu eingerichtet, Lasten (5) des Netzabschnitts (2) zu versorgen, falls das Versorgungsnetz (4) in einem für die Versorgung der Lasten (5) ungeeigneten Zustand ist, sowie eine zwischen Versorgungsnetz (4) und Netzabschnitt (2) ausgetauschte Wirkleistung durch Bereitstellung von Wirkleistung auf einen vorgegebenen Nennwert zu begrenzen. An arrangement (1) for the uninterrupted power supply of a network section (2) is connected to this via a first connection point (3) and to a supply network (4) via a second connection point (3 ') and comprises a memory (6) which is connected via a bidirectional inverter (7) is connected to the first connection point (3) for the exchange of reactive power and active power, and a decoupling impedance (8) via which the first connection point (3) is connected to the second connection point (3 '). The decoupling impedance (8) has such an inductance value that the inverter (7) has an alternating voltage at the connection point (3) by providing reactive power in the event of a short circuit ...

System and method for scheduling power usage

Microgrid control system

The present invention relates to a system for controlling microgrid facilities. In particular, the microgrid control system provided is capable of controlling multiple facilities according to characteristics of the facilities in order to achieve economic efficiency, environmental friendliness, and continued operability. The microgrid control system for controlling the operations of the multiple power facilities is provided with: a power supply activation/suspension planning unit that has a prediction unit for predicting outputs or loads of power supply facilities or load facilities and a prediction unit for predicting prediction errors contained therein; and an economical load allocation unit that determines command values related to the distribution of loads to be borne by currently running power supply facilities.

Generated power control system and control method for intelligent micro-grid with medium energy storage

A generated power control system and control method for an intelligent micro-grid with medium energy storage. The control system mainly comprises a wind-solar hybrid power generation system, a solar thermal power generation set with medium energy storage, and a micro-grid power control system. The control method comprises: a micro-grid centralized control center receives in real time a power instruction transmitted from a micro-grid dispatching automation system, and collects in real time the generated power of the wind-solar hybrid power generation system; an energy management system calculates an optimal power distribution scheme of a micro-grid. According to the power distribution scheme, stable output of the generated power of the micro-grid is implemented by performing coordinated control on heat storage and heat release rates of a heat storage system, and the generated power of the solar thermal power generation set. By means of the control method, the technical defects, such as uncontrollability, discontinuity, and large fluctuation of wind energy and solar generated power that are caused by the change in an external environment, can be overcome, the generated power of the micro-grid is stabilized, electric energy of a new energy can be consumed to the greatest extent, and the problems of "wind curtailment" and "light curtailment" in the new energy can be effectively solved.

POWER CONVERSION TEAM AND INTELLIGENT NETWORK SYSTEM INCLUDING THE SAME

Load switch for fragile electric power networks.

Un sistema y método para conectar selectivamente cargas en una red de sistema de energía, en donde las cargas se acoplan a un número de líneas laterales y las líneas laterales se acoplan a una línea de alimentación, cuando la línea de alimentación es desconectada de una red eléctrica como resultado del voltaje fuera de un intervalo predeterminado. Cada línea lateral incluye un dispositivo de conmutación colocado en donde la línea lateral se conecta a la línea de alimentación, en donde cada dispositivo de conmutación es provisto con un control de temporización para encender o apagar el dispositivo de conmutación con un tiempo de retraso. Cuando la red se desconecta de la red eléctrica, los dispositivos de conmutación detectan que el voltaje está fuera del intervalo predeterminado y a continuación se abren. Cuando las fuentes de energía en la red vuelven a dar servicio a la red, los dispositivos de conmutación detectan que el voltaje está dentro del intervalo predeterminado y se cierran en base a un cierto retraso predeterminado.

Dc building system with energy storage and control system

A DC building electrical system includes a DC power consuming device connected to a DC bus. A source of DC power is connected to the DC bus and powers the DC power consuming device. An energy storage device is connected to the DC bus and to a DC emergency load. The energy storage device powers the DC power consuming device in conjunction with the source of DC power, and powers the DC emergency load when source of power other than the energy storage device is available to the DC power consuming device.

Architecture and management system and device for micro-grids with energy generation, storage and consumption, of the totally integrated, dynamic and self-configurable type

Architecture system of a local grid made up of at least two single nodes constituting micro-grids, each managed by a self-configurable node controller that is also connected to the controllers of the other nodes and to the single energy generation, storage and consumption elements of its own node, the elements being variable in their configuration and dynamic in their behavior; the controller also optimizing the energy transfers according to specific management logics of the routine and sub-routine type.

Genset engine paralleling controls, devices, systems, and methods

A device to control a genset engine may use multiple feedback loops to provide a fast stable response to load changes. An outer feedback loop may receive frequency measurements and power measurements of a genset engine and determine a dispatch adjustment comprising a frequency setpoint based on the frequency measurements and power measurements. A middle feedback loop may comprise a double deadband droop filter that periodically generates a pulse based on the frequency setpoint and the power measurements. The middle feedback loop may update an inner loop setpoint based on the pulse. An inner feedback loop may alter a target fuel valve reference of the genset engine based on the inner loop setpoint generated by the second controller and a fuel valve droop.

Electric-power management system, electric-power management method, and section controller

Electric-power management system, an area controller transmits, to each of section controllers, information about a target voltage and information about the present voltage, each of the section controllers calculating a difference between the target voltage and the present voltage, received from the area controller, and calculating a power's demand-supply-adjustment request amount based on difference between the information about the voltages, each of facility-equipment controllers transmitting power-reception/power-release capable equipment information to each section controller, being information about a power-reception/power-release capable equipment in a facility into which the facility-equipment controller is installed, the section controller, based on the power-reception/power-release capable equipment information about the equipment, transmitting the equipment's demand-supply-adjustment request amount and the facility-equipment controller transmitting a control signal to the equipment based on the equipment's demand-supply-adjustment request amount received from the section controller to the facility-equipment controller in the facility.

Power supply system and control method of power supply system

Autonomous movement system

本发明提供自主运转系统，其具有：监测器(2)，其检测商业电源(1)的异常；具有蓄电池的充放电装置(30、40)，它们具有对电力系统进行充放电动作的系统连网功能以及向电力系统提供恒定电压恒定频率的电力的自主运转功能；监测器(4)，其检测充放电装置(30)的电力状态，并将检测输出传递给第2充放电装置(40)；以及切换器(SW1)，其进行商业电源与电力系统的连接和切断，进行如下控制：在商业电源正常时，切换器连接商业电源与电力系统，充放电装置(30、40)进行系统连网，在商业电源异常时，切换器切断商业电源与电力系统，充放电装置(30)自主运转，充放电装置(40)根据监测器(4)的检测输出进行充放电动作，使充放电装置(30)的自主运转电力恒定。

Optimization of microgrid energy use and distribution

An energy distribution may include a server and one or more databases. The system may communicate with an energy provider to receive energy provider data, at least one information collector to receive information collector data such as individualized energy usage data, customer preferences, and customer or location characteristics, and the one or more databases for receiving data for optimization. The system may calculate a cost of service or avoided cost using at least one of the individualized energy usage data and a system generation cost at a nearest bus. The system may also forecast individualized demand by end-use, individualized demand by location, energy prices, or energy costs. The system may optimize energy distribution, energy use, cost of service, or avoided cost using the forecasted individualized demand by end-use, the forecasted individualized demand by location, the forecasted energy prices, and the forecasted energy costs.

Method and apparatus for locating faults in an islanded microgrid

A fault isolating device for use in a microgrid disconnected from a main power grid includes a voltage meter for detecting a voltage anomaly indicative of an electrical fault, a timer for establishing a time window that begins and ends a predetermined time after a voltage anomaly is detected, a switch that is opened at the start of the time window, and a microcontroller that determines whether to leave the switch open to isolate a faulted portion of the microgrid or to close the switch. A plurality of fault isolating devices can be distributed throughout a microgrid to isolate a faulted branch or faulted branches of an islanded microgrid without interfering with normal fuse operation when the microgrid is connected to the main power grid.

Electrical power transmission system

一种经由传输线路(3)向至少一个编码解调器(4A)发送电力的电力发送装置，编码调制器(2A)具备：编码调制电路(23A)，其被供给发电电流，使用基于规定的编码序列的调制编码对发电电流进行编码调制来生成调制电流，并经由传输线路(3)向编码解调器(4A)发送调制电流；以及控制电路(20)，其控制编码调制电路(23A)。控制电路(20)将调制编码的频率设定为发电电流的频率的倍数。