JPS56107798A - Limiting device of overexcitation for gas-cooled rotary electric machine - Google Patents

Limiting device of overexcitation for gas-cooled rotary electric machine

Info

Publication number
JPS56107798A
JPS56107798A JP1059780A JP1059780A JPS56107798A JP S56107798 A JPS56107798 A JP S56107798A JP 1059780 A JP1059780 A JP 1059780A JP 1059780 A JP1059780 A JP 1059780A JP S56107798 A JPS56107798 A JP S56107798A
Authority
JP
Japan
Prior art keywords
field current
overexcitation
amplifier
generator
signal
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
JP1059780A
Other languages
Japanese (ja)
Inventor
Tsutomu Yamada
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 JP1059780A priority Critical patent/JPS56107798A/en
Publication of JPS56107798A publication Critical patent/JPS56107798A/en
Pending 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 recover the voltage of the rotary electric machine to the maximum capacity of the generator therein by eliminating the overexcitation to the generator when it is less than the time limit inversely proportional to the magnitude of a field current exceeding the allowable field current proportional to the cooling gas pressure. CONSTITUTION:The allowable field current proportional to the internal cooling gas pressure of the generator produced from an allowable field current signal setting circuit 15 is compared with the field current by a deviation detector 8. A subtractor 22 subtracts the square 100% voltage by the square field current, and a square operation amplifier 20 squares the deviation signal. When the deviation signal reaches a set value, a relay 17 is operated to open the contact 71b, and an arithmetic amplifier 27 integrates the sum of the outputs of the amplifier 20 and the subtractor 22. When the output of the amplifier 27 reaches the set value of the setting unit 28, a relay 30 is operated to apply the deviation signal as an overexcitation limit signal to an automatic voltage regulator 4.
JP1059780A 1980-01-29 1980-01-29 Limiting device of overexcitation for gas-cooled rotary electric machine Pending JPS56107798A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1059780A JPS56107798A (en) 1980-01-29 1980-01-29 Limiting device of overexcitation for gas-cooled rotary electric machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1059780A JPS56107798A (en) 1980-01-29 1980-01-29 Limiting device of overexcitation for gas-cooled rotary electric machine

Publications (1)

Publication Number Publication Date
JPS56107798A true JPS56107798A (en) 1981-08-26

Family

ID=11754644

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1059780A Pending JPS56107798A (en) 1980-01-29 1980-01-29 Limiting device of overexcitation for gas-cooled rotary electric machine

Country Status (1)

Country Link
JP (1) JPS56107798A (en)

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