CH618552A5 - - Google Patents

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Publication number
CH618552A5
CH618552A5 CH485379A CH485379A CH618552A5 CH 618552 A5 CH618552 A5 CH 618552A5 CH 485379 A CH485379 A CH 485379A CH 485379 A CH485379 A CH 485379A CH 618552 A5 CH618552 A5 CH 618552A5
Authority
CH
Switzerland
Prior art keywords
phase
signal
circuit
signals
circuit means
Prior art date
Application number
CH485379A
Other languages
German (de)
English (en)
Inventor
Merwyn Edgar Hodges
Original Assignee
Gen Electric
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 Gen Electric filed Critical Gen Electric
Publication of CH618552A5 publication Critical patent/CH618552A5/de

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
    • H02H3/26—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

Landscapes

  • Emergency Protection Circuit Devices (AREA)
  • Networks Using Active Elements (AREA)
  • Measurement Of Current Or Voltage (AREA)
CH485379A 1975-04-01 1979-05-23 CH618552A5 (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/564,015 US3992651A (en) 1975-04-01 1975-04-01 Active symmetrical component network for protective relays

Publications (1)

Publication Number Publication Date
CH618552A5 true CH618552A5 (ja) 1980-07-31

Family

ID=24252825

Family Applications (2)

Application Number Title Priority Date Filing Date
CH385076A CH618551A5 (ja) 1975-04-01 1976-03-26
CH485379A CH618552A5 (ja) 1975-04-01 1979-05-23

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CH385076A CH618551A5 (ja) 1975-04-01 1976-03-26

Country Status (8)

Country Link
US (1) US3992651A (ja)
BR (1) BR7601987A (ja)
CH (2) CH618551A5 (ja)
DE (1) DE2612256A1 (ja)
ES (1) ES446487A1 (ja)
FR (1) FR2306569A1 (ja)
SE (1) SE438391B (ja)
ZA (1) ZA761254B (ja)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE399995B (sv) * 1976-06-30 1978-03-06 Asea Ab Anordning for matning av stromfilter i elektriska skydd
US4146913A (en) * 1977-12-30 1979-03-27 Westinghouse Electric Corp. Symmetrical component sequence filter
US4208687A (en) * 1978-11-08 1980-06-17 Westinghouse Electric Corp. Protective relay apparatus
US4342062A (en) * 1979-05-21 1982-07-27 General Electric Company Sequence network circuits for protective relaying applications
US4296451A (en) * 1979-10-11 1981-10-20 General Electric Company Ultra high speed protective relay circuit
US4480283A (en) * 1981-06-24 1984-10-30 Elevator Gmbh Procedure and means for monitoring the phase sequence in a three-phase network
US4420788A (en) * 1982-07-29 1983-12-13 General Electric Company Phase relay for AC power transmission line protection
US4600961A (en) * 1983-09-01 1986-07-15 Westinghouse Electric Corp. Protective relay apparatus for detecting high-impedance ground faults
US4686601A (en) * 1985-10-02 1987-08-11 General Electric Company Ground distance relay for AC power transmission line protection
GB2195845B (en) * 1986-09-30 1991-03-27 Electricity Council Remote protection of three phase distribution transformers
FR2613492B1 (fr) * 1987-03-30 1989-07-21 Eurotherm Automation Sa Dispositif de detection de defaut dans un reseau triphase d'alimentation de charges
US4825323A (en) * 1987-11-12 1989-04-25 General Electric Company Out-of-step blocking unit
US4795983A (en) * 1988-03-07 1989-01-03 Westinghouse Electric Corp. Method and apparatus for identifying a faulted phase

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1674477A (en) * 1925-09-11 1928-06-19 Gen Electric Electric apparatus
GB361934A (en) * 1930-06-19 1931-11-19 Francis John Lane Improvements in electric protective arrangements
US2516022A (en) * 1945-08-18 1950-07-18 Westinghouse Electric Corp Relaying system
US2914703A (en) * 1953-03-30 1959-11-24 Lockheed Aircraft Corp Phase sequence sensitive circuits
US2897407A (en) * 1953-11-03 1959-07-28 Gen Electric Negative-phase-sequence responsive apparatus
US2836771A (en) * 1956-08-08 1958-05-27 Westinghouse Electric Corp Negative sequence voltage sensing network
FR1195611A (fr) * 1958-05-05 1959-11-18 Labo Cent Telecommunicat Circuits de contrôle d'un réseau d'alimentation en courant alternatif triphasé
US3110844A (en) * 1959-09-29 1963-11-12 Gen Electric Open and reverse phase protective system for polyphase electric apparatus
GB987974A (en) * 1960-07-20 1965-03-31 English Electric Co Ltd Improvements in or relating to electrical protective relays
US3331989A (en) * 1963-08-12 1967-07-18 Westinghouse Electric Corp Voltage comparator circuits
FR2034094A7 (ja) * 1969-01-10 1970-12-11 Comp Generale Electricite
US3736470A (en) * 1971-11-15 1973-05-29 Allen Bradley Co Method and apparatus for detecting phase imbalances
US3743889A (en) * 1971-12-16 1973-07-03 Hatch Inc Polyphase electric system protective apparatus

Also Published As

Publication number Publication date
CH618551A5 (ja) 1980-07-31
US3992651A (en) 1976-11-16
BR7601987A (pt) 1976-10-05
DE2612256C2 (ja) 1992-09-03
ES446487A1 (es) 1977-06-16
SE438391B (sv) 1985-04-15
ZA761254B (en) 1977-02-23
FR2306569B1 (ja) 1982-10-22
FR2306569A1 (fr) 1976-10-29
DE2612256A1 (de) 1976-10-21
SE7603902L (sv) 1976-10-02

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Legal Events

Date Code Title Description
PL Patent ceased