BR7705487A - Aparelhagem de rele de comparacao de fase para a protecao de uma linha de transmissao de forca em corrente alternad - Google Patents

Aparelhagem de rele de comparacao de fase para a protecao de uma linha de transmissao de forca em corrente alternad

Info

Publication number
BR7705487A
BR7705487A BR7705487A BR7705487A BR7705487A BR 7705487 A BR7705487 A BR 7705487A BR 7705487 A BR7705487 A BR 7705487A BR 7705487 A BR7705487 A BR 7705487A BR 7705487 A BR7705487 A BR 7705487A
Authority
BR
Brazil
Prior art keywords
protection
power transmission
transmission line
phase comparison
alternate current
Prior art date
Application number
BR7705487A
Other languages
English (en)
Inventor
W Hinman
R Gonnam
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 BR7705487A publication Critical patent/BR7705487A/pt

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
    • H02H3/28—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
    • H02H3/30—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 using pilot wires or other signalling channel
    • H02H3/302—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 using pilot wires or other signalling channel involving phase comparison

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)
BR7705487A 1976-08-20 1977-08-18 Aparelhagem de rele de comparacao de fase para a protecao de uma linha de transmissao de forca em corrente alternad BR7705487A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/716,045 US4053940A (en) 1976-08-20 1976-08-20 Modified offset keying apparatus for phase comparison relaying

Publications (1)

Publication Number Publication Date
BR7705487A true BR7705487A (pt) 1978-07-04

Family

ID=24876503

Family Applications (1)

Application Number Title Priority Date Filing Date
BR7705487A BR7705487A (pt) 1976-08-20 1977-08-18 Aparelhagem de rele de comparacao de fase para a protecao de uma linha de transmissao de forca em corrente alternad

Country Status (11)

Country Link
US (1) US4053940A (pt)
JP (1) JPS5325847A (pt)
BR (1) BR7705487A (pt)
CA (1) CA1085953A (pt)
DE (1) DE2736953A1 (pt)
ES (1) ES461776A1 (pt)
FR (1) FR2362513A1 (pt)
GB (1) GB1587447A (pt)
IT (1) IT1088501B (pt)
MX (1) MX143975A (pt)
SE (1) SE438580B (pt)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54137649A (en) * 1978-04-18 1979-10-25 Tokyo Electric Power Co Inc:The Digital protective relay device
JPS5752321A (en) 1980-09-10 1982-03-27 Mitsubishi Electric Corp Phase discriminator
US4935837A (en) * 1989-04-03 1990-06-19 Abb Power T&D Company Inc. Phase comparison relaying system with single channel communications link
US6469882B1 (en) * 2001-10-31 2002-10-22 General Electric Company Current transformer initial condition correction
JP4861542B2 (ja) * 2006-07-13 2012-01-25 大成化工株式会社 キャップ付き容器におけるキャップの閉蓋案内装置。

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5013937A (pt) * 1973-06-08 1975-02-13
US3986079A (en) * 1975-02-07 1976-10-12 Westinghouse Electric Corporation Offset keying technique for segregated phase comparison relaying

Also Published As

Publication number Publication date
FR2362513B1 (pt) 1980-05-16
FR2362513A1 (fr) 1978-03-17
GB1587447A (en) 1981-04-01
SE438580B (sv) 1985-04-22
SE7709367L (sv) 1978-02-21
JPS5325847A (en) 1978-03-10
CA1085953A (en) 1980-09-16
US4053940A (en) 1977-10-11
IT1088501B (it) 1985-06-10
MX143975A (es) 1981-08-12
ES461776A1 (es) 1978-12-01
DE2736953A1 (de) 1978-02-23

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