JPS63178799A - Exciter for synchronous generator - Google Patents

Exciter for synchronous generator

Info

Publication number
JPS63178799A
JPS63178799A JP62008048A JP804887A JPS63178799A JP S63178799 A JPS63178799 A JP S63178799A JP 62008048 A JP62008048 A JP 62008048A JP 804887 A JP804887 A JP 804887A JP S63178799 A JPS63178799 A JP S63178799A
Authority
JP
Japan
Prior art keywords
specified value
generator
exciter
voltage
current
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
JP62008048A
Other languages
Japanese (ja)
Inventor
Toshio Okazaki
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP62008048A priority Critical patent/JPS63178799A/en
Publication of JPS63178799A publication Critical patent/JPS63178799A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To ensure the protection of a generator against overvoltage, by judging that the feedback signal for an exciter is found lost in case the terminal voltage of the generator is below the specified value, even if the field current of the generator is above the specified value.
CONSTITUTION: A voltage detection circuit 10 compares the voltage feedback signal detected through a potential transformer 4 with the specified value, by which a contact 11 will be closed and an auxiliary relay 12 excited, if the detected voltage value is below the specified value. On the other hand, a field current detection circuit 14 compares the field current signal detected through a shunt 7 with the specified value, by which a contact 15 will be closed and an auxiliary relay 16 excited, if the detected field current value is above the specified value. If the contacts of auxiliary relays 12 and 16 are connected in series and both contacts are closed, the signal will be supplied to a generator trip circuit as the loss of generator voltage feedback signal for an exciter.
COPYRIGHT: (C)1988,JPO&Japio
JP62008048A 1987-01-19 1987-01-19 Exciter for synchronous generator Pending JPS63178799A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62008048A JPS63178799A (en) 1987-01-19 1987-01-19 Exciter for synchronous generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62008048A JPS63178799A (en) 1987-01-19 1987-01-19 Exciter for synchronous generator

Publications (1)

Publication Number Publication Date
JPS63178799A true JPS63178799A (en) 1988-07-22

Family

ID=11682452

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62008048A Pending JPS63178799A (en) 1987-01-19 1987-01-19 Exciter for synchronous generator

Country Status (1)

Country Link
JP (1) JPS63178799A (en)

Similar Documents

Publication Publication Date Title
JPH04252611A (en) Static switch
ES8202452A1 (en) Static tripping device for an electric circuit-breaking switch.
JPH03270631A (en) 4-pole circuit breaker
JPS63178799A (en) Exciter for synchronous generator
JPH03132436A (en) Different power supply mixed-contact detecting system and device therefor
JPH03250514A (en) Circuit breaker
JPH03239137A (en) Feeder system
JPH0469009A (en) Faulty feeder selector
JPH01144313A (en) Over voltage protecting circuit
JPH0217823A (en) Abnormal voltage detection breaker
JPH02304374A (en) Method of starting fault locator
JPH03251040A (en) Power distribution line fault zone detector
JPH01110016A (en) Protection circuit for load controller
JPS5442638A (en) Circuit breaker
JPH04355621A (en) Minute grounding selective relay
JPS5317948A (en) Protective circuit for overcurrent
JPH02273034A (en) Switchboard device
JPS6212877A (en) System for monitoring earth and short circuit of one-point earthing system
JPH0356099A (en) Field test method for generator
JPS5296336A (en) Protection device for circuit breaker
JPH01286723A (en) Overcurrent relay with trouble detecting function
JPH01270724A (en) Ground-fault relay
JPS5468950A (en) Short-circuit protective relay system
JPH0356879A (en) Circuit breaker testing device
JPH03241624A (en) Vacuum circuit-breaker