JPS54153253A - Protection relay system - Google Patents

Protection relay system

Info

Publication number
JPS54153253A
JPS54153253A JP6115078A JP6115078A JPS54153253A JP S54153253 A JPS54153253 A JP S54153253A JP 6115078 A JP6115078 A JP 6115078A JP 6115078 A JP6115078 A JP 6115078A JP S54153253 A JPS54153253 A JP S54153253A
Authority
JP
Japan
Prior art keywords
relays
directional distance
inputs
outputs
outer directional
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
JP6115078A
Other languages
Japanese (ja)
Inventor
Yuji Haishi
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP6115078A priority Critical patent/JPS54153253A/en
Publication of JPS54153253A publication Critical patent/JPS54153253A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To interrupt inner troubles for sure when electric source is off on one end by locking the outputs of outer directional distance relays on conditions of the operation of lagging undervoltage relays for ground fault and the non-operation of lagging outer directional distance relays.
CONSTITUTION: Inhibit circuits 201∼203 with inputs of undervoltage relays 114∼ 116 and outer directional distance relays 117∼119 and on-delay timers 204∼206 with inputs of these outputs, and inhibit circuits 207∼209 and off-delay timers 210∼212 with inputs of these outputs, are added to a phase comparison relaying system which compares phases constantly for controlling to the side of non-operation by the operation of outer directional distance relays when an outer trouble is given. In this construction, since unnecessary reactions of outer directional distance relays are locked by inhibit circuits 207∼209, phase comparison relays 129∼131 can be operated for sure for issuing breaker-tripping instructions even in the troubled time when electric source is off on one end.
COPYRIGHT: (C)1979,JPO&Japio
JP6115078A 1978-05-24 1978-05-24 Protection relay system Pending JPS54153253A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6115078A JPS54153253A (en) 1978-05-24 1978-05-24 Protection relay system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6115078A JPS54153253A (en) 1978-05-24 1978-05-24 Protection relay system

Publications (1)

Publication Number Publication Date
JPS54153253A true JPS54153253A (en) 1979-12-03

Family

ID=13162790

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6115078A Pending JPS54153253A (en) 1978-05-24 1978-05-24 Protection relay system

Country Status (1)

Country Link
JP (1) JPS54153253A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60167623A (en) * 1984-02-08 1985-08-31 株式会社東芝 Direction comparison relay system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60167623A (en) * 1984-02-08 1985-08-31 株式会社東芝 Direction comparison relay system

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