JPS54131748A - Inspection system for digital protective relay - Google Patents

Inspection system for digital protective relay

Info

Publication number
JPS54131748A
JPS54131748A JP3904478A JP3904478A JPS54131748A JP S54131748 A JPS54131748 A JP S54131748A JP 3904478 A JP3904478 A JP 3904478A JP 3904478 A JP3904478 A JP 3904478A JP S54131748 A JPS54131748 A JP S54131748A
Authority
JP
Japan
Prior art keywords
relay
circuit
arithmetic
inspection system
protective relay
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
JP3904478A
Other languages
Japanese (ja)
Inventor
Hisashi Goto
Toshihisa Funahashi
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 Electric Manufacturing Co Ltd
Tokyo Electric Power Company Holdings Inc
Original Assignee
Tokyo Electric Power Co Inc
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 Tokyo Electric Power Co Inc, Meidensha Electric Manufacturing Co Ltd filed Critical Tokyo Electric Power Co Inc
Priority to JP3904478A priority Critical patent/JPS54131748A/en
Publication of JPS54131748A publication Critical patent/JPS54131748A/en
Pending legal-status Critical Current

Links

Landscapes

  • Emergency Protection Circuit Devices (AREA)

Abstract

PURPOSE: To accomplish prompt detection of abnormalty in the equipment by inspection utilizing a margin time equivalent to sampling cycle.
CONSTITUTION: As clearly shown by the time chart, the time available for arithmetic circuits 4-1 and 4-2 almost doubles as compared with that available for an arithmetic circuit 4 within the sampling cycle ϕ. Therefore, when the arithmetic circuit 4 performs the function of a relay for short-circuit distance while other arithmetic circuits performs the function of a relay for ground-fault distance, the arithmetic circuits 4-1 and 4-2 can perform both functions of the relay for short- circuit distance and that for ground-fault.
COPYRIGHT: (C)1979,JPO&Japio
JP3904478A 1978-04-03 1978-04-03 Inspection system for digital protective relay Pending JPS54131748A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3904478A JPS54131748A (en) 1978-04-03 1978-04-03 Inspection system for digital protective relay

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3904478A JPS54131748A (en) 1978-04-03 1978-04-03 Inspection system for digital protective relay

Publications (1)

Publication Number Publication Date
JPS54131748A true JPS54131748A (en) 1979-10-13

Family

ID=12542111

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3904478A Pending JPS54131748A (en) 1978-04-03 1978-04-03 Inspection system for digital protective relay

Country Status (1)

Country Link
JP (1) JPS54131748A (en)

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