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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 15. Отображено 15.
09-06-2023 дата публикации

Transient homologous recording comparison method, device and equipment

Номер: CN116247609A
Автор: QIANG WEI, WU QUANWEI, ZHANG GUANGJIA, YU WEIGUO, ZHU HUIWEN, XU YULIN, CHENG YUWEI, LONG MENGFEI, YU JING, YAO HAN
Принадлежит:

The embodiment of the invention provides a transient homologous wave recording comparison method, device and equipment, and relates to the technical field of power relay protection, and the scheme comprises the steps: obtaining first wave recording data of a protection wave recording channel in a first time period from a wave recording file of a protection device; and obtaining the second recording data from the recording file of the recording device. And compensating the time scale of the first data point according to the first time measurement and calibration deviation of the first recording data, and compensating the time scale of the second data point according to the second time calibration deviation of the second recording data. M first data points are obtained from the compensated first recording data, and M second data points with the same time scale as the M first data points are obtained according to the compensated second recording data. And comparing the M first data points ...

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Номер записи: 1
06-06-2023 дата публикации

Test method and system and electronic equipment

Номер: CN116223939A
Автор: LIN CHAO, XIANG LIHUA, CHEN CEFU, ZHANG GUANGJIA, YU WEIGUO, SU XIAOLEI, FENG LIANG
Принадлежит:

The invention provides a testing method and system and electronic equipment, and is suitable for the technical field of power system testing. The method comprises the following steps: a test device obtains functions supported by the relay protection device, then displays the obtained functions of the relay protection device in a preset display mode, and completes initialization, null drift correction, parameter setting, program upgrading and other initial configuration and debugging work of the relay protection device; and after the function needing to be tested is determined, carrying out automatic testing on the relay protection device. According to the embodiment of the invention, the adaptability and universality between the test equipment and different relay protection devices can be improved.

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Номер записи: 2
13-06-2023 дата публикации

Echinococcosis information screening collection and remote consultation device

Номер: CN116261287A
Автор: YU WENJIE, WANG QIAN, ZHANG GUANGJIA, LIAO SHA, WANG QI
Принадлежит:

The invention relates to an echinococcosis information screening collection and remote consultation device which comprises a base, a remote consultation device body and a top cover, a protection mechanism is arranged in the base, the protection mechanism comprises three telescopic rods fixedly installed on the inner wall of the bottom of the base, rubber strips are fixedly installed on the peripheral walls of the telescopic rods, and the rubber strips are fixedly installed on the inner wall of the base. The peripheral wall of the telescopic rod is sleeved with a damping spring. According to the echinococcosis information screening, collecting and remote consultation device, through the telescopic rods, the rubber strips and the damping springs, the bumping situation generated in the transportation process can be greatly reduced, a large amount of vibration is reduced, and the influence on internal elements of the remote consultation device body is reduced; the remote consultation device ...

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Номер записи: 3
05-03-2014 дата публикации

Breaker failure protection blocking method

Номер: CN103618296A
Автор: QIU JINHUI, YU YOU, JIA SONGJIANG, ZHU XINGYONG, TIAN JINGFU, QIAN HAI, ZHANG GUANGJIA
Принадлежит:

The invention discloses a breaker failure protection blocking method which is used for solving the technical problem that when a circuit branch breaks down, failure voltage blocking constant value sensitivity does not exist in bus breaker failure protection. The breaker failure protection blocking method comprises the following steps that a bus protection device is used for calculating the scalar value and the scalar sum of zero sequence currents of all circuit branches and monitoring the failure opening state of the circuit branches, and as for the circuit branches with failure starting connection points being conducted, a zero sequence current threshold value and a zero sequence rate criterion judgment are met, three continuous sampling points are met, and a breaker failure protection blocking component is opened. Compared with the prior art, the breaker failure protection blocking method has the advantages that judging is carried out according to the relation among the zero sequence ...

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Номер записи: 4
30-05-2023 дата публикации

Fault positioning method and system

Номер: CN116184119A
Автор: LIN SAJIA, GAO XIAOQUAN, NING TAO, LU FENG, ZHANG GUANGJIA, YU WEIGUO, LING HAO, ZHOU HAIBO, MA WENBIN
Принадлежит:

The invention provides a fault positioning method and system, and the method is applied to a four-end power transmission line, one end of a fifth branch of the four-end power transmission line, a first branch and a second branch are connected to a first node, and the other end of the fifth branch, a third branch and a fourth branch are connected to a second node. The method comprises the following steps: respectively acquiring positive sequence values corresponding to a first branch to a fourth branch; based on the positive sequence values, the commissioning control values and the line impedance values of the first to fourth branches, respectively determining operation calculation values corresponding to the first to fourth branches, the first node and the second node; based on the operation calculation values, the operation control values and the line impedance values of the first branch to the fourth branch, the first node and the second node, fault positioning values corresponding to ...

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Номер записи: 5
04-07-2023 дата публикации

Intelligent substation SPCD file verification method and device and storage medium

Номер: CN116384365A
Автор: QIANG WEI, LI JIN, ZHANG GUANGJIA, YU WEIGUO, MENG WEI, XIE SHICHUN, WEI ZHENFENG, YANG JIA, ZHANG XIN
Принадлежит:

The invention is suitable for the technical field of intelligent substations, and provides an intelligent substation SPCD file verification method and device and a storage medium, and the method comprises the steps: loading an SPCD file, and analyzing the content of the SPCD file to a first data structure; loading the Schema configuration file, and analyzing the content of the Schema configuration file to a second data structure; verifying the content of the SPCD file in the first data structure through a Schema library to obtain a first group of verification result data; verifying the content of the SPCD file to obtain a second group of verification result data; and storing the first group of verification result data and the second group of verification result data in a third data structure. According to the method, not only can the grammar and semanteme of the SPCD file be verified, but also the SPCD file can be subjected to normative verification, the abnormal condition in the SPCD file ...

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Номер записи: 6
23-07-2008 дата публикации

Method for automatically correcting bus knife switch secondary contact

Номер: CN0101227082A
Автор: GUANGJIA ZHANG, YING MA, YUANSHENG CHEN, ZHANG GUANGJIA, MA YING, CHEN YUANSHENG
Принадлежит:

The invention discloses a method for automatically rectifying bus disconnecting link auxiliary joint, which solves the technique problem to judge the condition of the disconnecting link auxiliary joint precisely. The method of the invention comprises the following steps: acquiring bus system information, adopting data process unit to calculate large and small differential current of the bus, judging whether the large and the small differences lie at balance condition, storing each unit disconnecting link condition in the memory, breaking timely and inspecting each unit disconnecting link current and disconnecting link auxiliary joint condition, breaking all the disconnecting link auxiliary joints if any unit disconnecting link has current, starting automatic rectifying step of the disconnecting link auxiliary joint. Compared the prior art, the invention combines three methods of single-circuit disconnecting link restoration, multi-path disconnecting link memory, interlinking condition judgment ...

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Номер записи: 7
04-07-2023 дата публикации

Transformer current transformer disconnection detection method and device and relay protection equipment

Номер: CN116381553A
Автор: WANG GANGHUA, ZHOU HAO, YU WEIGUO, ZHANG GUANGJIA, LI SONGZE, LU SHAN, LU ZHAOYAN, WEI SHENGHUA, YUAN LU
Принадлежит:

The invention is suitable for the technical field of power systems, and provides a transformer current transformer disconnection detection method and device and relay protection equipment, and the method comprises the steps: obtaining the phase current of the secondary side of each current transformer in a transformer; current abrupt change detection is carried out based on the phase current; if the phase current suddenly changes, determining a suddenly changing side and a suddenly changing phase of the transformer; under the condition that the side number of the abrupt change side is the set side number, determining the current abrupt change type of the phase current; and determining a disconnection detection result according to the current abrupt change type and the phase current of the abrupt change phase. According to the invention, the disconnection event of the current transformer can be accurately detected and identified.

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Номер записи: 8
18-04-2023 дата публикации

Fault positioning method and device of T-connection line, terminal equipment and storage medium

Номер: CN115980509A
Автор: LIN SAJIA, LIN RIHONG, NING TAO, ZHANG GUANGJIA, YU WEIGUO, ZHOU HAIBO, MA WENBIN, LIANG YINBING, LU FENG, ZHOU XIANG, ZHU HUIZHI
Принадлежит:

The embodiment of the invention is suitable for the technical field of electric power, and provides a fault positioning method and device for a T-connection line, terminal equipment and a storage medium, and the method comprises the steps: obtaining the voltage and current information of all branches on the T-connection line if a fault detection instruction fed back by any branch in the T-connection line is received; the voltage and current information comprises electrical components of at least two candidate dimensions; determining differential current phase information based on all the voltage and current information, and determining a target dimension for fault positioning from the candidate dimensions according to the differential current phase information; and identifying a fault position in the T-connection line according to the electrical components corresponding to all the branches under the target dimension. According to the method provided by the embodiment of the invention, fault ...

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Номер записи: 9
23-04-2014 дата публикации

Reconstruction method of intelligent transformer station

Номер: CN103746304A
Автор: ZHANG GUANGJIA, CHEN YUANSHENG, ZHU HUIWEN, HOU LIANG, FENG LIANG, LI RONGCHANG
Принадлежит:

The invention discloses a reconstruction method of an intelligent transformer station, for solving the technical problem that a bus maintains protective operation during the reconstruction period of the intelligent transformer station. The method provided by the invention comprises the following steps: connecting the secondary cables of conventional transformer station bus differential protection intervals with a digitalization bus differential protection slave machine in a shifting mode, electrically connecting an interval combination unit and an intelligent terminal with primary equipment of the transformer station through cables, modifying the communication parameter arrangement of a digitalization bus differential protection main machine, and removing the slave machine. Compared to the prior art, the method provided by the invention has the following advantages: the digitalization bus differential protection main machine and the digitalization bus differential protection slave machine ...

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Номер записи: 10
12-05-2023 дата публикации

Weak feed side differential current voltage auxiliary starting method and device

Номер: CN116111553A
Автор: NING TAO, LIN SAJIA, LIN RIHONG, GAO XIAOQUAN, YU WEIGUO, ZHANG GUANGJIA, ZHOU HAIBO, MA WENBIN, LU FENG, ZHOU XIANG, JIANG HUI
Принадлежит:

The invention is suitable for the technical field of power systems, and provides a weak feed side differential current voltage auxiliary starting method and device, and the method comprises the steps: obtaining a current amplitude parameter of a local side of a line, and obtaining a current amplitude parameter of an opposite side of the line; according to the current amplitude parameter of the local side of the line and the current amplitude parameter of the opposite side of the line, calculating a differential current amplitude between the local side and the opposite side of the line; obtaining a composite voltage of the line; according to the differential current amplitude and the composite voltage, whether the line meets a preset weak feed side starting condition or not is judged, and if yes, weak feed side starting operation is executed. According to the differential current amplitude and the composite voltage, whether the line meets a preset weak feed side starting condition or not ...

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Номер записи: 11
08-09-2010 дата публикации

Method for automatically correcting bus knife switch secondary contact

Номер: CN0101227082B
Автор: YING MA, GUANGJIA ZHANG, YUANSHENG CHEN, MA YING, ZHANG GUANGJIA, CHEN YUANSHENG
Принадлежит:

The invention discloses a method for automatically rectifying a bus bar switch auxiliary contact, which solves the technique problem to judge the condition of the switch auxiliary contact precisely. The method of the invention comprises the following steps: acquiring a bus bar system information, adopting data process unit to calculate large and small difference current of the bus bar, judging whether the large and the small differences lie at balance condition, storing each unit disconnecting link condition in the memory, breaking timely and inspecting each unit disconnecting link current and disconnecting link auxiliary joint condition, breaking all the disconnecting link auxiliary joints if any unit disconnecting link has current, starting automatic rectifying step of the disconnectinglink auxiliary joint. Compared with the prior art, the invention combines three methods of single-circuit switch restoration, multi-path switch memory and interlinking condition judgment to realize automatic ...

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Номер записи: 12
23-04-2014 дата публикации

High-sensitivity busbar differential protection method

Номер: CN103746350A
Автор: LIU ZHIYUAN, YU XIAOJUN, WEI PENG, LU FENG, PAN LIANGLIANG, ZHANG GUANGJIA, WU YINGCHAO
Принадлежит:

The invention discloses a high-sensitivity busbar differential protection method and aims to improve the sensitivity of differential protection when a busbar of a wind power system has a single-phase fault. The method comprises steps of respectively differentiating three-phase current by adopting a fixed starting threshold criterion, an adaptive action threshold criterion, an adaptive differential action ratio criterion, a voltage jump criterion and a current jump criterion. Compared with the prior art, the high-sensitivity busbar differential protection method has the advantages that a starting value in the fixed starting threshold criterion is small, and the sensitivity is high; the adaptive action threshold criterion is used for adaptively regulating differential action threshold according to the magnitude of branch current load on the busbar in the wind power system; the adaptive differential action ratio criterion is used for adaptively adjusting a ratio restraint coefficient according ...

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Номер записи: 13
30-05-2023 дата публикации

Relay protection equipment test method and device, electronic equipment and storage medium

Номер: CN116185835A
Автор: LIN RIHONG, LIN SAJIA, NING TAO, GAO XIAOQUAN, ZHANG GUANGJIA, YU WEIGUO, ZHOU HAIBO, LU FENG, MA WENBIN, LIANG YINBING, ZHOU XIANG, WEI ZIQIANG, ZHU HUIZHI
Принадлежит:

The embodiment of the invention discloses a test method and device of relay protection equipment, electronic equipment and a computer readable storage medium, which are used for improving the reuse rate of test cases and reducing the difficulty of updating and maintaining the test cases. The method comprises the following steps: acquiring a configuration file of relay protection equipment; analyzing the configuration file to obtain a test case table, a relay protection information table, a source identifier and a target identifier; according to test case information in the test case table, a target test case script file is obtained from a test case library, and the test case library comprises test case script files corresponding to all the function units; obtaining relay protection information; associating the relay protection information with a source identifier of a relay protection information table; and for each target test case script file, reading target relay protection information ...

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Номер записи: 14
02-06-2023 дата публикации

Relay outlet drive control method and device

Номер: CN116203872A
Автор: WEI SHENGHUA, LU ZHAOYAN, YU WEIGUO, ZHANG GUANGJIA, YUAN LU, HE WEI, WANG GANGHUA, WANG SHIBO
Принадлежит:

According to the relay outlet drive control method and device provided by the invention, the reliability, stability, reliability and real-time performance of a bus protection outlet signal event can be improved, the problems of inconsistent outlets, incorrect outlets or asynchronous time under the condition of double-CPU logic are effectively solved, the reliability of the bus protection outlet is improved, and the reliability of the bus protection outlet is improved. Therefore, safe operation of the power system is ensured, and simplicity, safety and reliability are realized. The method does not need complex logic, is simple and effective in function realization, and improves the operation safety and reliability of a power system.

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Номер записи: 15