JPS55155600A - Overexcitation restricting device for generator - Google Patents

Overexcitation restricting device for generator

Info

Publication number
JPS55155600A
JPS55155600A JP6340379A JP6340379A JPS55155600A JP S55155600 A JPS55155600 A JP S55155600A JP 6340379 A JP6340379 A JP 6340379A JP 6340379 A JP6340379 A JP 6340379A JP S55155600 A JPS55155600 A JP S55155600A
Authority
JP
Japan
Prior art keywords
generator
voltage
field current
allowable
avr4
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
JP6340379A
Other languages
Japanese (ja)
Other versions
JPH036756B2 (en
Inventor
Tsutomu Yamada
Masaru Shimomura
Junji Sofue
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP6340379A priority Critical patent/JPS55155600A/en
Publication of JPS55155600A publication Critical patent/JPS55155600A/en
Publication of JPH036756B2 publication Critical patent/JPH036756B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
    • H02P9/14—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Eletrric Generators (AREA)

Abstract

PURPOSE:To enable the operation of a generator up to the full extent of its capability and to lessen the shock generated when an overexcitation is restricted by changing an allowable field current value in proportion to an inner-cooling gas compression and also by allowing a short period overexitation using a step signal. CONSTITUTION:A voltage Vg in proportion to the inner-cooling gas compression of a generator 1 detected by a converter 10 is added to the base quantity Vb established by a setting device 11, and a set point for the allowable field current is obtained by a circuit 12. Then the voltage of the generator 1 is detected by a detection relay 25, and if the generator voltage is above +5% and the field current is above the allowable value, the output of a deviation detector 8 is immediately given to an AVR4, through the intermediatry of a polarity converting amplifier 49, with a relay 25 energized by the output of a comparator 24. In the case where the generator has normal voltage and a system voltage has dropped, a detector 13 detects an excessive field voltage and a timer 14 is energized. After elapse of the set time, a contact 15a gives an ''ON'' indication, the pulse of a V/F converter 46 is counted 47, and then a step type signal, obtained by D/A conversion 48, is given to the AVR4.
JP6340379A 1979-05-21 1979-05-21 Overexcitation restricting device for generator Granted JPS55155600A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6340379A JPS55155600A (en) 1979-05-21 1979-05-21 Overexcitation restricting device for generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6340379A JPS55155600A (en) 1979-05-21 1979-05-21 Overexcitation restricting device for generator

Publications (2)

Publication Number Publication Date
JPS55155600A true JPS55155600A (en) 1980-12-03
JPH036756B2 JPH036756B2 (en) 1991-01-30

Family

ID=13228294

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6340379A Granted JPS55155600A (en) 1979-05-21 1979-05-21 Overexcitation restricting device for generator

Country Status (1)

Country Link
JP (1) JPS55155600A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63144799A (en) * 1986-12-09 1988-06-16 Mitsubishi Electric Corp Excitation controller for synchronous machine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5111117A (en) * 1974-07-18 1976-01-29 Tokyo Shibaura Electric Co Dokihatsudenkino seigyosochi
JPS5373314A (en) * 1976-12-10 1978-06-29 Mitsubishi Electric Corp Excessive excitation limitting device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5111117A (en) * 1974-07-18 1976-01-29 Tokyo Shibaura Electric Co Dokihatsudenkino seigyosochi
JPS5373314A (en) * 1976-12-10 1978-06-29 Mitsubishi Electric Corp Excessive excitation limitting device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63144799A (en) * 1986-12-09 1988-06-16 Mitsubishi Electric Corp Excitation controller for synchronous machine

Also Published As

Publication number Publication date
JPH036756B2 (en) 1991-01-30

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