CA1194549A - Method and device for finding faults on electric lines by the principle of low impedance - Google Patents

Method and device for finding faults on electric lines by the principle of low impedance

Info

Publication number
CA1194549A
CA1194549A CA000411975A CA411975A CA1194549A CA 1194549 A CA1194549 A CA 1194549A CA 000411975 A CA000411975 A CA 000411975A CA 411975 A CA411975 A CA 411975A CA 1194549 A CA1194549 A CA 1194549A
Authority
CA
Canada
Prior art keywords
voltage signal
limit value
line
difference
phase difference
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
CA000411975A
Other languages
English (en)
French (fr)
Inventor
Ivan Demesmaeker
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.)
BBC Brown Boveri AG Switzerland
Original Assignee
BBC Brown Boveri AG Switzerland
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 BBC Brown Boveri AG Switzerland filed Critical BBC Brown Boveri AG Switzerland
Application granted granted Critical
Publication of CA1194549A publication Critical patent/CA1194549A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/08—Locating faults in cables, transmission lines, or networks
    • 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
    • H02H3/38—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 both voltage and current; responsive to phase angle between voltage and current
    • H02H3/382—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 both voltage and current; responsive to phase angle between voltage and current involving phase comparison between current and voltage or between values derived from current and voltage

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Locating Faults (AREA)
CA000411975A 1981-09-22 1982-09-22 Method and device for finding faults on electric lines by the principle of low impedance Expired CA1194549A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH6094/81 1981-09-22
CH609481 1981-09-22

Publications (1)

Publication Number Publication Date
CA1194549A true CA1194549A (en) 1985-10-01

Family

ID=4304172

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000411975A Expired CA1194549A (en) 1981-09-22 1982-09-22 Method and device for finding faults on electric lines by the principle of low impedance

Country Status (6)

Country Link
US (1) US4458285A (enExample)
EP (1) EP0075348B1 (enExample)
BR (1) BR8205496A (enExample)
CA (1) CA1194549A (enExample)
DE (1) DE3265428D1 (enExample)
IN (1) IN156517B (enExample)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2690573B1 (fr) * 1992-04-28 1997-05-09 Merlin Gerin Dispositif de controle de defaut homopolaire dans un reseau de distribution electrique.
FR2692086B1 (fr) * 1992-06-03 1995-10-06 Electricite De France Procede et dispositif de protection selective contre les defauts a la terre d'un reseau electrique.
US5349490A (en) * 1992-10-15 1994-09-20 Schweitzer Engineering Laboratories, Inc. Negative sequence directional element for a relay useful in protecting power transmission lines
US6869282B2 (en) * 2002-03-04 2005-03-22 Robert P. Carmichael Implant positioning device and method
CN103605012B (zh) * 2013-10-23 2016-08-24 国家电网公司 一种励磁系统试验小车
CN110470980B (zh) * 2019-08-15 2020-10-16 电子科技大学 基于遗传算法的模拟电路故障特征范围确定方法
CN117458396A (zh) * 2023-11-16 2024-01-26 中广核工程有限公司 发电机失磁保护与励磁限制匹配性综合分析方法和系统

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US409269A (en) * 1889-08-20 Nahan bros
CH402137A (de) * 1963-06-28 1965-11-15 Bbc Brown Boveri & Cie Richtungsrelais
GB1096412A (en) * 1964-04-28 1967-12-29 English Electric Co Ltd Electrical protective relays
SU480134A1 (ru) * 1973-05-03 1975-08-05 Всесоюзный Государственный Проектно-Изыскательский И Научно-Исследовательский Институт "Энергосетьпроект" Реле сопротивлени
CH613570A5 (enExample) * 1976-03-25 1979-09-28 Bbc Brown Boveri & Cie

Also Published As

Publication number Publication date
US4458285A (en) 1984-07-03
DE3265428D1 (en) 1985-09-19
IN156517B (enExample) 1985-08-24
BR8205496A (pt) 1983-08-23
EP0075348B1 (de) 1985-08-14
EP0075348A1 (de) 1983-03-30

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Legal Events

Date Code Title Description
MKEX Expiry