JPH04364319A - Protective unit for power system - Google Patents

Protective unit for power system

Info

Publication number
JPH04364319A
JPH04364319A JP3166317A JP16631791A JPH04364319A JP H04364319 A JPH04364319 A JP H04364319A JP 3166317 A JP3166317 A JP 3166317A JP 16631791 A JP16631791 A JP 16631791A JP H04364319 A JPH04364319 A JP H04364319A
Authority
JP
Japan
Prior art keywords
fault
power
detecting
under
operating
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.)
Granted
Application number
JP3166317A
Other languages
Japanese (ja)
Other versions
JP3222491B2 (en
Inventor
Satoru Ishibashi
Original Assignee
Toshiba 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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP16631791A priority Critical patent/JP3222491B2/en
Publication of JPH04364319A publication Critical patent/JPH04364319A/en
Application granted granted Critical
Publication of JP3222491B2 publication Critical patent/JP3222491B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PURPOSE: To detect fault of power system reliably by providing means for detecting a fault and holding the fault detection for a predetermined time.
CONSTITUTION: A fault detecting section 12a detects occurrence of fault based on an averaged value of power operated at a power value operating section 11b and a power operated at a power operating section 11a. A fault removal detecting section 12b detects occurrence of fault based on an averaged value of power operated at a power averaged value operating section 11b and a power operated at the power operating section 11a. An under fault detecting section 17 detects under fault based on signals detected at the fault detecting section 12a and the fault removal detecting section 12b. In other words, upon detection of a fault 91D1 a fault occurrence detecting/holding section 13a holds a fault occurrence signal for a predetermined time, and an under fault detection 14 signal is set based on the output from an under fault recording/holding section 13c. According to the invention, under fault can be detected reliably.
COPYRIGHT: (C)1992,JPO&Japio
JP16631791A 1991-06-11 1991-06-11 Power system protection device Expired - Lifetime JP3222491B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16631791A JP3222491B2 (en) 1991-06-11 1991-06-11 Power system protection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16631791A JP3222491B2 (en) 1991-06-11 1991-06-11 Power system protection device

Publications (2)

Publication Number Publication Date
JPH04364319A true JPH04364319A (en) 1992-12-16
JP3222491B2 JP3222491B2 (en) 2001-10-29

Family

ID=15829112

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16631791A Expired - Lifetime JP3222491B2 (en) 1991-06-11 1991-06-11 Power system protection device

Country Status (1)

Country Link
JP (1) JP3222491B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007228690A (en) * 2006-02-22 2007-09-06 Central Res Inst Of Electric Power Ind Severe accident detector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007228690A (en) * 2006-02-22 2007-09-06 Central Res Inst Of Electric Power Ind Severe accident detector

Also Published As

Publication number Publication date
JP3222491B2 (en) 2001-10-29

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