EA201892650A1 - Способ и устройство для обнаружения коротких замыканий в трехфазной электрической распределительной сети - Google Patents

Способ и устройство для обнаружения коротких замыканий в трехфазной электрической распределительной сети

Info

Publication number
EA201892650A1
EA201892650A1 EA201892650A EA201892650A EA201892650A1 EA 201892650 A1 EA201892650 A1 EA 201892650A1 EA 201892650 A EA201892650 A EA 201892650A EA 201892650 A EA201892650 A EA 201892650A EA 201892650 A1 EA201892650 A1 EA 201892650A1
Authority
EA
Eurasian Patent Office
Prior art keywords
current
phase
phase electrical
short circuits
directions
Prior art date
Application number
EA201892650A
Other languages
English (en)
Other versions
EA036979B1 (ru
Inventor
Сеппо Петтиссало
Original Assignee
Эмтеле Ой
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Эмтеле Ой filed Critical Эмтеле Ой
Publication of EA201892650A1 publication Critical patent/EA201892650A1/ru
Publication of EA036979B1 publication Critical patent/EA036979B1/ru

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
    • H02H7/267—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured for parallel lines and wires
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/08—Locating faults in cables, transmission lines, or networks
    • G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
    • G01R31/085—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution lines, e.g. overhead
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00—Details of emergency protective circuit arrangements
    • H02H1/0007—Details of emergency protective circuit arrangements concerning the detecting means
    • 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
    • H02H3/162—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 for ac systems
    • H02H3/165—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 for ac systems for three-phase systems
    • 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
    • H02H3/26—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 difference between voltages or between currents; responsive to phase angle between voltages or between currents
    • H02H3/32—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 difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
    • H02H3/34—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 difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors of a three-phase system
    • H02H3/343—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 difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors of a three-phase system using phase sequence analysers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
    • H02H7/28—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured for meshed systems

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Locating Faults (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

Способ обнаружения коротких замыканий (4) в трехфазной электрической распределительной сети, включающий в себя определение тока (21C) нулевой последовательности, тока (21A) первой фазы и тока (21B) второй фазы в некотором месте трехфазной электрической распределительной сети, определение первых отфильтрованных токов (22) путем удаления из определенных токов частотной составляющей, соответствующей основной частоте электрической распределительной сети, за счет отфильтровывания указанной частотной составляющей, определение направлений первых отфильтрованных токов в течение первого периода (23) времени и сравнение указанных направлений (24) относительно друг друга, и, если по меньшей мере одно из определенных направлений противоположно относительно по меньшей мере одного из двух других определенных направлений, сигнализирование об обнаружении короткого замыкания (25).
EA201892650A 2016-05-23 2017-05-23 Способ и устройство для обнаружения коротких замыканий в трехфазной электрической распределительной сети EA036979B1 (ru)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20160137A FI126892B (fi) 2016-05-23 2016-05-23 Vikavirtaindikaattori
PCT/FI2017/050382 WO2017203099A1 (en) 2016-05-23 2017-05-23 Method and apparatus for detecting faults in a three-phase electrical distribution network

Publications (2)

Publication Number Publication Date
EA201892650A1 true EA201892650A1 (ru) 2019-06-28
EA036979B1 EA036979B1 (ru) 2021-01-21

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EA201892650A EA036979B1 (ru) 2016-05-23 2017-05-23 Способ и устройство для обнаружения коротких замыканий в трехфазной электрической распределительной сети

Country Status (6)

Country Link
US (1) US11428726B2 (ru)
EP (1) EP3465860A1 (ru)
CN (1) CN109478778B (ru)
EA (1) EA036979B1 (ru)
FI (1) FI126892B (ru)
WO (1) WO2017203099A1 (ru)

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* Cited by examiner, † Cited by third party
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WO2019139973A1 (en) * 2018-01-09 2019-07-18 Rensselaer Polytechnic Institute Temporary overvoltage and ground fault overvoltage protection based on arrester current measurement and analysis
CN109361199B (zh) * 2018-10-10 2023-10-20 国网浙江省电力有限公司台州供电公司 用于光伏电站送出线上过渡电阻接地故障的保护方法
AU2019271971A1 (en) 2018-12-14 2020-07-02 Smart Wires Inc. Fast post-fault phase reactance balancing
CN112649694B (zh) * 2019-10-12 2023-11-17 南京南瑞继保电气有限公司 一种小电流接地***单相接地故障的判定方法
PL241323B1 (pl) * 2019-11-05 2022-09-12 Apator Elkomtech Spolka Akcyjna Sposób i system dla sieci energetycznej średniego napięcia SN do lokalizacji i redukcji skutków awarii
TWI699061B (zh) * 2020-02-06 2020-07-11 士林電機廠股份有限公司 具母線電流偵測及短路保護的方法及其裝置
CN111884183A (zh) * 2020-07-20 2020-11-03 天津大学 一种花瓣状配电网主干线的自适应正序电流速断保护方法
EP3993204B1 (en) * 2020-10-28 2023-09-27 Katholieke Universiteit Leuven Determining a fault location on a powerline
CN113762230B (zh) * 2021-11-10 2022-02-15 广东电网有限责任公司佛山供电局 一种电缆隧道附属设施故障自动化识别方法及相关装置
FI130150B (en) * 2022-02-11 2023-03-15 Safegrid Oy METHOD AND DEVICE FOR FAULT DETECTION IN A DISTRIBUTION NETWORK
CN115513917B (zh) * 2022-10-18 2024-07-26 国网福建省电力有限公司 一种含分布式电源配电网的综合电流幅值差动保护新方法
CN117559372B (zh) * 2024-01-11 2024-03-12 珠海菲森电力科技有限公司 小电流接地***的单相接地保护方法、装置、设备和介质

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ES476633A1 (es) 1978-01-12 1979-12-01 Westinghouse Electric Corp Un aparato revelador perfeccionado.
JP2633637B2 (ja) * 1988-08-05 1997-07-23 株式会社日立製作所 対称分保護リレー
FR2687860B1 (fr) * 1992-02-25 1995-05-05 Thierry Rahban Neutralisation des surtensions generees dans les bobinages de phase par la reaction magnetique d'induit.
JPH0833318A (ja) 1994-07-14 1996-02-02 Nissin Electric Co Ltd 高調波検出器
JP3218163B2 (ja) 1995-06-01 2001-10-15 株式会社戸上電機製作所 地絡事故検出方法
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Also Published As

Publication number Publication date
CN109478778A (zh) 2019-03-15
CN109478778B (zh) 2020-04-14
EP3465860A1 (en) 2019-04-10
EA036979B1 (ru) 2021-01-21
FI126892B (fi) 2017-07-31
US11428726B2 (en) 2022-08-30
US20200341046A1 (en) 2020-10-29
WO2017203099A1 (en) 2017-11-30
FI20160137A (fi) 2017-07-31

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