EA200901464A1 - GENERATOR CURRENT ZERO SEQUENCE - Google Patents
GENERATOR CURRENT ZERO SEQUENCEInfo
- Publication number
- EA200901464A1 EA200901464A1 EA200901464A EA200901464A EA200901464A1 EA 200901464 A1 EA200901464 A1 EA 200901464A1 EA 200901464 A EA200901464 A EA 200901464A EA 200901464 A EA200901464 A EA 200901464A EA 200901464 A1 EA200901464 A1 EA 200901464A1
- Authority
- EA
- Eurasian Patent Office
- Prior art keywords
- zero
- control
- module
- sequence
- leads
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/16—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to fault current to earth, frame or mass
- H02H3/17—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to fault current to earth, frame or mass by means of an auxiliary voltage injected into the installation to be protected
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
- Protection Of Generators And Motors (AREA)
Abstract
Устройство для выявления присоединения с замыканием на землю в сети с изолированной нейтралью содержит фильтры токов нулевой последовательности, включенные в цепь каждого присоединения, фильтр напряжения нулевой последовательности, подключенный к сборным шинам, устройство (генератор) для создания тока нулевой последовательности, подключенное к сборным шинам через выключатель, управляемый модулем контроля и управления, подключенным к фильтру напряжения нулевой последовательности, который осуществляет кратковременное замыкание указанного выключателя в случае превышения порога срабатывания устройства управления, а в блок (модуль контроля и) управления введена линия задержки. При этом генератор тока нулевой последовательности в трехфазной сети с изолированной нейтралью содержит реактор с трехстержневым ненасыщаемым магнитопроводом и с обмотками, соединенными в звезду с заземленной общей точкой (нейтралью), а также нормально разомкнутый модуль высоковольтный, снабженный приводом, подключенным к модулю контроля и управления, и выполненный в виде последовательно соединенных селектора и вакуумного коммутационного модуля с тремя вакуумными выключателями, причем селектор выполнен с тремя подвижными контактами, с тремя изолированными неподвижными контактами, с тремя заземленными выводами и с тремя выводами, соединенными с шинами, а коммутационный модуль выполнен с тремя выводами, соединенными с подвижными контактами селектора и с тремя выводами, соединенными с обмотками реактора, при этом модуль контроля и управления выполнен с возможностью идентификации однофазного замыкания цепи на землю по напряжению нулевой последовательности. В результате упрощена конструкция, повышены быстродействие и надежность, сокращены габариты и масса, обеспечена возможность оптимальной компоновки, повышена безопасность обслуживания.A device for detecting a ground fault connection in an insulated neutral network contains zero-sequence current filters included in each connection circuit, a zero-sequence voltage filter connected to busbars, a device (generator) for creating a zero-sequence current connected to busbars through a switch controlled by a monitoring and control module connected to a zero-sequence voltage filter that short-circuits the switch annogo breaker tripping threshold is exceeded the control device, and a control unit (control module and) Control introduced delay line. In this case, a zero-sequence current generator in a three-phase network with an insulated neutral contains a reactor with a three-rod non-saturated magnetic core and windings connected in a star with a grounded common point (neutral), as well as a normally open high-voltage module equipped with a drive connected to the control and control module, and made in the form of series-connected selector and a vacuum switching module with three vacuum switches, and the selector is made with three movable contacts and, with three isolated fixed contacts, with three grounded leads and with three leads connected to buses, and the switching module is made with three leads connected to the movable contacts of the selector and to three leads connected to the windings of the reactor, while the control and monitoring module made with the possibility of identifying a single-phase circuit of the circuit to the ground voltage zero-sequence. As a result, the design has been simplified, speed and reliability have been improved, dimensions and weight have been reduced, optimal layout has been ensured, and safety has been improved.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/RU2007/000213 WO2008133543A1 (en) | 2007-04-28 | 2007-04-28 | Zero sequence current generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EA200901464A1 true EA200901464A1 (en) | 2010-04-30 |
| EA016235B1 EA016235B1 (en) | 2012-03-30 |
Family
ID=39925894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EA200901464A EA016235B1 (en) | 2007-04-28 | 2007-04-28 | Zero sequence current generator |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2145369A4 (en) |
| CN (1) | CN101711447A (en) |
| EA (1) | EA016235B1 (en) |
| WO (1) | WO2008133543A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101436776B (en) * | 2008-12-15 | 2010-12-22 | 辽宁省电力有限公司锦州供电公司 | Grounding and line selection method for low current grounding system |
| CN106773994B (en) * | 2017-01-09 | 2023-08-04 | 浙江新涛电子科技有限公司 | Circuit for controlling PE ground wire in time sequence and control method |
| CN107623314B (en) * | 2017-09-06 | 2019-04-16 | 李晓明 | A kind of neutral resistor earthed system zero-sequence protection method and system |
| CN113484681B (en) * | 2021-07-14 | 2022-09-23 | 广西电网有限责任公司电力科学研究院 | On-site overlapping type feeder automation line ground fault interval detection method and device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2157038C1 (en) * | 1999-04-27 | 2000-09-27 | Новосибирский государственный технический университет | Ground fault detector for insulated-neutral supply mains |
| RU2217851C1 (en) * | 2002-03-14 | 2003-11-27 | Общество С Ограниченной Ответственностью "Промышленная Группа Тэл Таврида Электрик" | Switchgear and control gear |
| FI115488B (en) * | 2003-10-22 | 2005-05-13 | Abb Oy | Method and apparatus for detecting a breaking earth fault in a power distribution network |
| JP2007068279A (en) * | 2005-08-30 | 2007-03-15 | Chubu Electric Power Co Inc | Method for detecting earth fault |
-
2007
- 2007-04-28 EA EA200901464A patent/EA016235B1/en not_active IP Right Cessation
- 2007-04-28 WO PCT/RU2007/000213 patent/WO2008133543A1/en active Application Filing
- 2007-04-28 CN CN200780052774.7A patent/CN101711447A/en active Pending
- 2007-04-28 EP EP07834948.7A patent/EP2145369A4/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| EP2145369A4 (en) | 2014-01-22 |
| EP2145369A1 (en) | 2010-01-20 |
| WO2008133543A1 (en) | 2008-11-06 |
| EA016235B1 (en) | 2012-03-30 |
| CN101711447A (en) | 2010-05-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM4A | Lapse of a eurasian patent due to non-payment of renewal fees within the time limit in the following designated state(s) |
Designated state(s): AM AZ BY KZ KG MD TJ TM RU |