GB882840A - Improvements in or relating to voltage sensing circuits for polyphase alternating current systems - Google Patents

Improvements in or relating to voltage sensing circuits for polyphase alternating current systems

Info

Publication number
GB882840A
GB882840A GB35452/59A GB3545259A GB882840A GB 882840 A GB882840 A GB 882840A GB 35452/59 A GB35452/59 A GB 35452/59A GB 3545259 A GB3545259 A GB 3545259A GB 882840 A GB882840 A GB 882840A
Authority
GB
United Kingdom
Prior art keywords
voltage
phase
circuit
voltage regulator
senses
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.)
Expired
Application number
GB35452/59A
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.)
CBS Corp
Original Assignee
Westinghouse 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 Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of GB882840A publication Critical patent/GB882840A/en
Expired 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

882,840. Automatic voltage control systems. WESTINGHOUSE ELECTRIC CORPORATION. Oct. 20, 1959 [Oct. 22, 1958], No. 35452/59. Class 38 (4). [Also in Group XXXVII] A polyphase alternating current system comprises means to prevent the voltage of any phase from rising to a dangerous value under fault conditions by means of devices which obtain the symmetrical voltage components of the system. A three-phase system 1 is supplied by an alternator 2 having a field winding 3 fed by an exciter 4 controlled by a voltage regulator 6. A circuit 7 is provided which senses the average value-or the positive sequence voltage-of the phase voltages of the system 1, a circuit 8 which senses the negative sequence voltage of the phase voltages and a circuit 9 which senses the zero sequence voltage thereof. The outputs of the circuits 7, 8, 9 are fed to windings 31, 32, 33 respectively of the voltage regulator 6 which output is representative of the highest phase voltage of the system 1. The output of the voltage regulator controls the alternator field 3 by way of the exciter 4 to prevent a dangerous rise in the voltage of any phase due, say, to fault conditions. The voltage regulator 6 may be of the magnetic amplifier type. Alternatively, the voltage regulator may be replaced by an overvoltage relay responsive to the outputs of the circuits 7, 8, 9. Frequency compensation is provided in the circuit 8.
GB35452/59A 1958-10-22 1959-10-20 Improvements in or relating to voltage sensing circuits for polyphase alternating current systems Expired GB882840A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US882840XA 1958-10-22 1958-10-22
US1238142XA 1958-10-22 1958-10-22

Publications (1)

Publication Number Publication Date
GB882840A true GB882840A (en) 1961-11-22

Family

ID=65721675

Family Applications (1)

Application Number Title Priority Date Filing Date
GB35452/59A Expired GB882840A (en) 1958-10-22 1959-10-20 Improvements in or relating to voltage sensing circuits for polyphase alternating current systems

Country Status (3)

Country Link
JP (1) JPS368369B1 (en)
FR (1) FR1238142A (en)
GB (1) GB882840A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2249474A1 (en) * 2009-05-06 2010-11-10 Siemens Aktiengesellschaft Method for suppressing network originated faults in a power plant assembly

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1115344A (en) * 1978-01-30 1981-12-29 Timothy F. Glennon Voltage regulator for a.c. generator
CN113671252B (en) * 2021-07-02 2024-05-17 浙江中广电器集团股份有限公司 Power supply protection device and method for air source heat pump unit and storage medium

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2249474A1 (en) * 2009-05-06 2010-11-10 Siemens Aktiengesellschaft Method for suppressing network originated faults in a power plant assembly

Also Published As

Publication number Publication date
JPS368369B1 (en) 1961-06-22
FR1238142A (en) 1960-08-05

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