ES476633A1 - Protective relaying apparatus - Google Patents

Protective relaying apparatus

Info

Publication number
ES476633A1
ES476633A1 ES476633A ES476633A ES476633A1 ES 476633 A1 ES476633 A1 ES 476633A1 ES 476633 A ES476633 A ES 476633A ES 476633 A ES476633 A ES 476633A ES 476633 A1 ES476633 A1 ES 476633A1
Authority
ES
Spain
Prior art keywords
remote location
zero sequence
circuit breaker
protective relaying
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
ES476633A
Other languages
Spanish (es)
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.)
CBS 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 ES476633A1 publication Critical patent/ES476633A1/en
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
    • H02H7/26—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
    • H02H7/30—Staggered disconnection
    • 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
    • H02H3/40—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 ratio of voltage and current
    • H02H3/402—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 ratio of voltage and current using homopolar quantities

Landscapes

  • Emergency Protection Circuit Devices (AREA)

Abstract

A protective system for a polyphase distribution circuit comprises first and second ground relays 60, 60' located at a substation and a remote location respectively, each ground relay providing a time- delayed trip signal to an associated circuit breaker 52, 52' in dependence on the ratio of the zero sequence current Io to some function of the phase currents, and a zero sequence directional relay 67 at the remote location for adjusting the trip delay time of the second circuit breaker according to the flow direction of a zero sequence quantity at the remote location.
ES476633A 1978-01-12 1979-01-08 Protective relaying apparatus Expired ES476633A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US86878978A 1978-01-12 1978-01-12

Publications (1)

Publication Number Publication Date
ES476633A1 true ES476633A1 (en) 1979-12-01

Family

ID=25352322

Family Applications (1)

Application Number Title Priority Date Filing Date
ES476633A Expired ES476633A1 (en) 1978-01-12 1979-01-08 Protective relaying apparatus

Country Status (10)

Country Link
JP (1) JPS5497748A (en)
BR (1) BR7900098A (en)
DE (1) DE2900654A1 (en)
ES (1) ES476633A1 (en)
FR (1) FR2414810A1 (en)
GB (1) GB2012505B (en)
IT (1) IT1110058B (en)
MX (1) MX145530A (en)
SE (1) SE436237B (en)
ZA (1) ZA79137B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63179736U (en) * 1987-05-14 1988-11-21
SE459059B (en) * 1987-09-16 1989-05-29 Asea Ab PROTECT FOR HIGH-RESISTANT EARTH ERRORS
DE4439499C2 (en) * 1994-10-27 1998-01-29 Siemens Ag Method for detecting an earth short on an electrical power transmission line
US6453248B1 (en) * 1998-07-21 2002-09-17 Abb Inc. High impedance fault detection
AU755700B2 (en) * 1999-11-29 2002-12-19 Canon Kabushiki Kaisha Power generation system, and method for installing the same
ES2323994B1 (en) * 2006-10-25 2010-05-13 Universidad Del Pais Vasco-Euskal Herriko Unibertsitatea ELECTRICAL LINE PROTECTION SYSTEM TO DETERMINE THE SENSE IN WHICH A FAILURE IS PRODUCED.
FI126892B (en) * 2016-05-23 2017-07-31 Emtele Oy Felströmindikator

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3539866A (en) * 1967-10-11 1970-11-10 Federal Pacific Electric Co Multi-zone fault protection systems

Also Published As

Publication number Publication date
GB2012505B (en) 1982-04-28
DE2900654A1 (en) 1979-07-19
SE7900254L (en) 1979-09-14
SE436237B (en) 1984-11-19
ZA79137B (en) 1979-12-27
IT1110058B (en) 1985-12-23
MX145530A (en) 1982-03-02
BR7900098A (en) 1979-08-07
GB2012505A (en) 1979-07-25
IT7919231A0 (en) 1979-01-12
FR2414810A1 (en) 1979-08-10
JPS5497748A (en) 1979-08-02

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