ZA828960B - Protective relay apparatus - Google Patents

Protective relay apparatus

Info

Publication number
ZA828960B
ZA828960B ZA828960A ZA828960A ZA828960B ZA 828960 B ZA828960 B ZA 828960B ZA 828960 A ZA828960 A ZA 828960A ZA 828960 A ZA828960 A ZA 828960A ZA 828960 B ZA828960 B ZA 828960B
Authority
ZA
South Africa
Prior art keywords
relay apparatus
protective relay
protective
relay
Prior art date
Application number
ZA828960A
Other languages
English (en)
Inventor
Roger Elliott Ray
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 ZA828960B publication Critical patent/ZA828960B/xx

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
    • H02H3/305—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 current comparison
    • 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
    • H02H7/261—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 involving signal transmission between at least two stations
    • H02H7/263—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 involving signal transmission between at least two stations involving transmissions of measured values

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)
ZA828960A 1982-01-13 1982-12-06 Protective relay apparatus ZA828960B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/339,031 US4408246A (en) 1982-01-13 1982-01-13 Protective relay apparatus

Publications (1)

Publication Number Publication Date
ZA828960B true ZA828960B (en) 1983-12-28

Family

ID=23327171

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA828960A ZA828960B (en) 1982-01-13 1982-12-06 Protective relay apparatus

Country Status (8)

Country Link
US (1) US4408246A (es)
EP (1) EP0083772A1 (es)
JP (1) JPS58123314A (es)
BR (1) BR8207555A (es)
CA (1) CA1198201A (es)
ES (1) ES518916A0 (es)
MX (1) MX154870A (es)
ZA (1) ZA828960B (es)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2510831A1 (fr) * 1981-07-31 1983-02-04 Inst Francais Du Petrole Dispositif d'alimentation electrique d'appareils electroniques d'un ensemble de grande longueur de reception d'ondes acoustiques
US4528611A (en) * 1983-02-22 1985-07-09 Westinghouse Electric Corp. Relay for pilot protection of electrical power lines
US4538195A (en) * 1984-02-22 1985-08-27 Westinghouse Electric Corp. Three terminal current differential protective relay
FR2560456B1 (fr) * 1984-02-29 1990-04-13 Alsthom Atlantique Dispositif de protection differentielle d'une ligne electrique a haute tension comprenant au moins un piquage
US4675774A (en) * 1985-12-13 1987-06-23 Westinghouse Electric Corp. Direct transfer trip apparatus for use with an active pilot wire communications channel
US4675775A (en) * 1985-12-13 1987-06-23 Westinghouse Electric Corp. Active pilot wire apparatus for electromechanical current differential relays
GB2195845B (en) * 1986-09-30 1991-03-27 Electricity Council Remote protection of three phase distribution transformers
US4751604A (en) * 1986-10-16 1988-06-14 General Electric Company Comparison signal error detector for protective relay system
NO864750L (no) * 1986-11-26 1988-05-27 Gni Energetichesky Inst Anordning for transient direktiv beskyttelse av transmisjonslinje som anvender baereboelgestroem overfoering.
DE69022555T2 (de) * 1989-04-06 1996-05-30 Fuji Electric Co Ltd Gerät zur erfassung von der trennung eines systemes für verteilte stromversorgung.
US4939617A (en) * 1989-05-05 1990-07-03 Dowty Rfl Industries Inc. Method and apparatus for monitoring an AC transmission line
US6567256B1 (en) * 1993-08-06 2003-05-20 Schweitzer Engineering Labs, Inc. Dual protective relay for power systems
US6148267A (en) * 1998-01-02 2000-11-14 General Electric Company Method and apparatus for transmission line phase angle comparisons
US6222711B1 (en) 1998-04-21 2001-04-24 Kabushiki Kaisha Toshiba Bus-bar protection relay equipment
US20030223167A1 (en) * 2000-12-22 2003-12-04 Udren Eric A. Distributed bus differential relay system
CN105119249B (zh) * 2015-06-30 2017-09-19 许昌许继软件技术有限公司 一种换流系统的桥差动保护方法
CN110703041B (zh) * 2019-10-24 2020-09-15 西南交通大学 基于电流-电流导数二维空间的输电线路故障检测方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2641634A (en) * 1950-06-29 1953-06-09 Donald J Marihart Phase comparison electronic relay protective system
JPS5128813B1 (es) * 1968-02-02 1976-08-21
US4020396A (en) * 1975-02-07 1977-04-26 Westinghouse Electric Corporation Time division multiplex system for a segregated phase comparison relay system
JPS5242460A (en) * 1975-10-01 1977-04-02 Shiyuukichi Inatome Method of making stainless steel melting vessel by deep drawing
JPS54140144A (en) * 1978-04-24 1979-10-31 Chugoku Electric Power Co Ltd:The Protective relaying equipment
US4275429A (en) * 1979-10-12 1981-06-23 Westinghouse Electric Corp. Protective relay apparatus
JPS56136121A (en) * 1980-03-25 1981-10-24 Mitsubishi Electric Corp Multiterminal protecting relay

Also Published As

Publication number Publication date
US4408246A (en) 1983-10-04
JPS58123314A (ja) 1983-07-22
EP0083772A1 (en) 1983-07-20
BR8207555A (pt) 1983-10-25
ES8403242A1 (es) 1984-03-01
CA1198201A (en) 1985-12-17
ES518916A0 (es) 1984-03-01
MX154870A (es) 1987-12-23

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