DE3478655D1 - Apparatus for detecting ground fault in variable-voltage variable-frequency power system - Google Patents

Apparatus for detecting ground fault in variable-voltage variable-frequency power system

Info

Publication number
DE3478655D1
DE3478655D1 DE8484103022T DE3478655T DE3478655D1 DE 3478655 D1 DE3478655 D1 DE 3478655D1 DE 8484103022 T DE8484103022 T DE 8484103022T DE 3478655 T DE3478655 T DE 3478655T DE 3478655 D1 DE3478655 D1 DE 3478655D1
Authority
DE
Germany
Prior art keywords
variable
power system
frequency power
ground fault
detecting ground
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
DE8484103022T
Other languages
English (en)
Inventor
Nobuharu C O Mitsubishi Takata
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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
Priority claimed from JP58049742A external-priority patent/JPS59173777A/ja
Priority claimed from JP58049740A external-priority patent/JPS59173776A/ja
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Application granted granted Critical
Publication of DE3478655D1 publication Critical patent/DE3478655D1/de
Expired legal-status Critical Current

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
    • H02H7/08—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 for dynamo-electric motors
    • 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
    • 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
DE8484103022T 1983-03-23 1984-03-20 Apparatus for detecting ground fault in variable-voltage variable-frequency power system Expired DE3478655D1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP58049742A JPS59173777A (ja) 1983-03-23 1983-03-23 可変電圧可変周波数電力系統の地絡検出装置
JP58049740A JPS59173776A (ja) 1983-03-23 1983-03-23 可変電圧可変周波数電力系統の地絡検出装置

Publications (1)

Publication Number Publication Date
DE3478655D1 true DE3478655D1 (en) 1989-07-13

Family

ID=26390188

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8484103022T Expired DE3478655D1 (en) 1983-03-23 1984-03-20 Apparatus for detecting ground fault in variable-voltage variable-frequency power system

Country Status (4)

Country Link
US (1) US4589046A (de)
EP (1) EP0123129B1 (de)
CA (1) CA1210453A (de)
DE (1) DE3478655D1 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NZ216902A (en) * 1985-10-28 1988-11-29 Gen Electric Ground fault protection-power restored if fault is cleared
GB2231216B (en) * 1989-04-05 1993-04-14 Mitsubishi Electric Corp Zero-phase sequence current detector
JPH04210779A (ja) * 1990-12-14 1992-07-31 Mitsubishi Electric Corp インバータ装置の地絡検出器及び地絡検出方法
JP3056898B2 (ja) * 1992-10-23 2000-06-26 株式会社東芝 電気車制御装置
FR2701570B1 (fr) * 1993-02-12 1995-03-31 Electricite De France Dispositif de vérification de la continuité d'une résistance.
FR2701569B1 (fr) * 1993-02-16 1995-04-14 Serthel Procédé et circuit de mesure et de régulation de puissance, pour des circuits inducteurs à courants alternatifs importants et à fréquences élevées.
DE102013225946B4 (de) * 2013-12-13 2024-01-25 Bender Gmbh & Co. Kg Vorrichtung und Verfahren zur Isolationsüberwachung in einem Stromversorgungssystem mit hochohmig geerdetem Sternpunkt
DE102015114452B4 (de) * 2015-08-31 2017-05-04 Sma Solar Technology Ag Verfahren zum Betrieb eines Wechselrichters und Wechselrichter
CN106199305B (zh) * 2016-07-01 2018-12-28 太原理工大学 煤矿井下供电系统用干式变压器绝缘健康状态评估方法
US20180041023A1 (en) * 2016-08-05 2018-02-08 Jesus Juvenal Farfan Electrical safety control device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2177900A (en) * 1937-10-09 1939-10-31 James T Logan Power system protection
DE2115807C3 (de) * 1971-04-01 1974-10-17 Siemens Ag, 1000 Berlin Und 8000 Muenchen Erdschlußschutzeinrichtung für elektrische Geräte mit in Stern geschalteten Wicklungen
US4258403A (en) * 1979-05-31 1981-03-24 Westinghouse Electric Corp. Ground fault circuit interrupter
GB2110016B (en) * 1981-06-18 1984-08-30 Bicc Plc Detector for electric earth-leakage currents, and method of detecting such currents
DE3237800C2 (de) * 1982-08-03 1986-09-11 Loher Gmbh, 8399 Ruhstorf Schutzeinrichtung für Asynchron-Motoren

Also Published As

Publication number Publication date
CA1210453A (en) 1986-08-26
EP0123129B1 (de) 1989-06-07
EP0123129A1 (de) 1984-10-31
US4589046A (en) 1986-05-13

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee