JPS5486742A - Differential protective network for a*c* electric apparatus - Google Patents

Differential protective network for a*c* electric apparatus

Info

Publication number
JPS5486742A
JPS5486742A JP15063078A JP15063078A JPS5486742A JP S5486742 A JPS5486742 A JP S5486742A JP 15063078 A JP15063078 A JP 15063078A JP 15063078 A JP15063078 A JP 15063078A JP S5486742 A JPS5486742 A JP S5486742A
Authority
JP
Japan
Prior art keywords
electric apparatus
differential protective
protective network
network
differential
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.)
Pending
Application number
JP15063078A
Other languages
English (en)
Japanese (ja)
Inventor
Edowaado Pibarinen Uein
Jiyon Roseru Roido
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.)
Westinghouse Electric Corp
Original Assignee
Westinghouse 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
Application filed by Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of JPS5486742A publication Critical patent/JPS5486742A/ja
Pending 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
    • H02H7/06—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 generators; for synchronous capacitors
    • H02H7/062—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 generators; for synchronous capacitors for parallel connected generators
    • 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
    • H02H3/28—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 two spaced portions of a single system, e.g. at opposite ends of one line, at input and output of apparatus

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Protection Of Generators And Motors (AREA)
JP15063078A 1977-12-08 1978-12-07 Differential protective network for a*c* electric apparatus Pending JPS5486742A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/858,863 US4173774A (en) 1977-12-08 1977-12-08 Parallel AC electrical system with differential protection immune to high current through faults

Publications (1)

Publication Number Publication Date
JPS5486742A true JPS5486742A (en) 1979-07-10

Family

ID=25329389

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15063078A Pending JPS5486742A (en) 1977-12-08 1978-12-07 Differential protective network for a*c* electric apparatus

Country Status (8)

Country Link
US (1) US4173774A (en, 2012)
JP (1) JPS5486742A (en, 2012)
CA (1) CA1130436A (en, 2012)
DE (1) DE2852582A1 (en, 2012)
FR (1) FR2411499A1 (en, 2012)
GB (1) GB2010030B (en, 2012)
IT (1) IT1101397B (en, 2012)
NL (1) NL7810816A (en, 2012)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4644440A (en) * 1985-01-08 1987-02-17 Westinghouse Electric Corp. Redundant power supply arrangement with surge protection
US4731690A (en) * 1986-12-05 1988-03-15 Westinghouse Electrical Corp. Real load unbalance protection system for parallel variable speed constant frequency electrical power systems
US4728806A (en) * 1986-12-05 1988-03-01 Westinghouse Electric Corp. DC link variable speed constant frequency power source paralleling controls
US4905117A (en) * 1988-09-02 1990-02-27 Westinghouse Electric Corp. Circuit and method for DC content protection of parallel VSCF power systems
US5047890A (en) * 1990-03-12 1991-09-10 Westinghouse Electric Corp. Differential current protection circuits
US5523938A (en) * 1995-06-07 1996-06-04 Sundstrand Corporation Differential current fault protection for an AC/DC hybrid system and method therefor
US5805394A (en) * 1997-06-17 1998-09-08 Sundstrand Corporation Overvoltage protection circuit for a generating system utilizing a fault current sensing Circuit in combination with a shunting circuit
FR2769142B1 (fr) * 1997-09-29 1999-12-17 Sgs Thomson Microelectronics Circuit de protection associable a un filtre
US7016171B2 (en) 2001-02-01 2006-03-21 Hydro-Aire, Inc. Current fault detector and circuit interrupter and packaging thereof
US6583975B2 (en) * 2001-02-01 2003-06-24 Hydro-Aire, Inc. Aircraft applicable ground fault circuit interrupter
US7362551B2 (en) * 2001-02-01 2008-04-22 Hydro-Aire, Inc. Aircraft applicable circuit imbalance detection and circuit interrupter and packaging thereof
US6879224B2 (en) * 2002-09-12 2005-04-12 Agilent Technologies, Inc. Integrated filter and impedance matching network
CN110556781B (zh) * 2018-05-31 2022-08-12 上海航空电器有限公司 单通道多电飞机发电机控制器的联接汇流条差动保护功能结构
CN112965005B (zh) * 2021-02-04 2023-06-27 西安热工研究院有限公司 一种利用假负载校验差动保护极性的系统及方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4932139A (en, 2012) * 1972-07-26 1974-03-23

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1731955A (en) * 1926-08-05 1929-10-15 Gen Electric Protective arrangement
US2183537A (en) * 1938-01-03 1939-12-19 Westinghouse Electric & Mfg Co Pilot wire relaying
US2696573A (en) * 1951-04-09 1954-12-07 Reyrolle A & Co Ltd Electric signaling arrangement for protective or other purposes
US3160787A (en) * 1959-11-12 1964-12-08 Westinghouse Electric Corp Restraint operation relay employing zener diode
DE1151060B (de) * 1962-01-11 1963-07-04 Bbc Brown Boveri & Cie Differentialschutz
US3259802A (en) * 1963-06-03 1966-07-05 Gen Electric Ground fault responsive protective system for electric power distribution apparatus
US3377551A (en) * 1964-06-26 1968-04-09 Gen Electric Multiphase current transformer fault indicator
US3654516A (en) * 1971-04-07 1972-04-04 Westinghouse Electric Corp Change of current or voltage acutated protecting relay
US3729650A (en) * 1972-02-07 1973-04-24 R Cook Potential-current transformer device
CH577762A5 (en, 2012) * 1974-02-27 1976-07-15 Bbc Brown Boveri & Cie
US4089033A (en) * 1977-03-04 1978-05-09 General Electric Company High speed bus differential relay

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4932139A (en, 2012) * 1972-07-26 1974-03-23

Also Published As

Publication number Publication date
FR2411499A1 (fr) 1979-07-06
IT1101397B (it) 1985-09-28
GB2010030A (en) 1979-06-20
GB2010030B (en) 1982-06-23
DE2852582C2 (en, 2012) 1990-10-04
IT7830600A0 (it) 1978-12-06
DE2852582A1 (de) 1979-06-13
US4173774A (en) 1979-11-06
CA1130436A (en) 1982-08-24
NL7810816A (nl) 1979-06-12

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