JPH04355621A - Minute grounding selective relay - Google Patents

Minute grounding selective relay

Info

Publication number
JPH04355621A
JPH04355621A JP12915491A JP12915491A JPH04355621A JP H04355621 A JPH04355621 A JP H04355621A JP 12915491 A JP12915491 A JP 12915491A JP 12915491 A JP12915491 A JP 12915491A JP H04355621 A JPH04355621 A JP H04355621A
Authority
JP
Japan
Prior art keywords
zero
order
grounding
break
minute
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.)
Pending
Application number
JP12915491A
Other languages
Japanese (ja)
Inventor
Keiji Wada
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.)
Meidensha Corp
Meidensha Electric Manufacturing Co Ltd
Original Assignee
Meidensha Corp
Meidensha Electric Manufacturing Co Ltd
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 Meidensha Corp, Meidensha Electric Manufacturing Co Ltd filed Critical Meidensha Corp
Priority to JP12915491A priority Critical patent/JPH04355621A/en
Publication of JPH04355621A publication Critical patent/JPH04355621A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To break feeders in order starting with one having the highest possibility of minute grounding accident occurrence after detecting the magnitude of the variation of the zero-phase current of each feeder before and after the occurrence of zero-phase voltage thereby lessening the needless breaks of sound feeders.
CONSTITUTION: In a minute grounding selective relay which is equipped with a selective breaker element 10 which starts by the detection of the zero-phase voltage of a grounding overvoltage relay element 64BL and breaks feeders F1-F8 in order based on the set feeder break order, the variation (vector difference) of the zero-phase current detected with the zero-phase current transformer ZCT of each feeder before and after the detection of zero-phase voltage is measured. A zero-phase current variation order detection means 5 is provided, which decides the order of the magnitudes of these variations, and by this order, the feeder break order to be set in the selective break element 10 is set.
COPYRIGHT: (C)1992,JPO&Japio
JP12915491A 1991-05-31 1991-05-31 Minute grounding selective relay Pending JPH04355621A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12915491A JPH04355621A (en) 1991-05-31 1991-05-31 Minute grounding selective relay

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12915491A JPH04355621A (en) 1991-05-31 1991-05-31 Minute grounding selective relay

Publications (1)

Publication Number Publication Date
JPH04355621A true JPH04355621A (en) 1992-12-09

Family

ID=15002482

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12915491A Pending JPH04355621A (en) 1991-05-31 1991-05-31 Minute grounding selective relay

Country Status (1)

Country Link
JP (1) JPH04355621A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009118678A (en) * 2007-11-08 2009-05-28 Chugoku Electric Power Co Inc:The Power line earth fault protection system
JP2015524240A (en) * 2012-05-18 2015-08-20 エスエムエー ソーラー テクノロジー アーゲー Method and apparatus for locating and extinguishing arc locations

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009118678A (en) * 2007-11-08 2009-05-28 Chugoku Electric Power Co Inc:The Power line earth fault protection system
JP2015524240A (en) * 2012-05-18 2015-08-20 エスエムエー ソーラー テクノロジー アーゲー Method and apparatus for locating and extinguishing arc locations

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