GB1216928A - Real load unbalance protection circuit for alternating current power sources connected for parallel operation - Google Patents

Real load unbalance protection circuit for alternating current power sources connected for parallel operation

Info

Publication number
GB1216928A
GB1216928A GB55502/68A GB5550268A GB1216928A GB 1216928 A GB1216928 A GB 1216928A GB 55502/68 A GB55502/68 A GB 55502/68A GB 5550268 A GB5550268 A GB 5550268A GB 1216928 A GB1216928 A GB 1216928A
Authority
GB
United Kingdom
Prior art keywords
frequency
circuits
generators
output
real load
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
GB55502/68A
Other languages
English (en)
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.)
Westinghouse Electric 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 GB1216928A publication Critical patent/GB1216928A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/06—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric generators; for synchronous capacitors
    • H02H7/062—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric generators; for synchronous capacitors for parallel connected generators

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Protection Of Generators And Motors (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Control Of Eletrric Generators (AREA)
GB55502/68A 1968-01-10 1968-11-22 Real load unbalance protection circuit for alternating current power sources connected for parallel operation Expired GB1216928A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US69675668A 1968-01-10 1968-01-10

Publications (1)

Publication Number Publication Date
GB1216928A true GB1216928A (en) 1970-12-23

Family

ID=24798418

Family Applications (1)

Application Number Title Priority Date Filing Date
GB55502/68A Expired GB1216928A (en) 1968-01-10 1968-11-22 Real load unbalance protection circuit for alternating current power sources connected for parallel operation

Country Status (3)

Country Link
US (1) US3539820A (https=)
JP (1) JPS5224217B1 (https=)
GB (1) GB1216928A (https=)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0288642A3 (en) * 1986-12-05 1989-12-06 Westinghouse Electric Corporation Real load unbalance protection circuit and method
EP0446526A3 (en) * 1990-03-12 1992-08-05 Westinghouse Electric Corporation Differential current protection circuits

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3683199A (en) * 1970-09-14 1972-08-08 Westinghouse Electric Corp Over-{11 and underexcitation protection circuit for alternating current power systems
CA1140989A (en) * 1979-02-05 1983-02-08 Roland W. Christen Protective circuit for clutchless parallel generating system
US4701690A (en) * 1985-11-27 1987-10-20 Basler Electric Company Transfer apparatus, regulating apparatus and methods
US4728806A (en) * 1986-12-05 1988-03-01 Westinghouse Electric Corp. DC link variable speed constant frequency power source paralleling controls
US4800291A (en) * 1987-03-04 1989-01-24 Basler Electric Company Electronic circuit for control of a voltage regulator of an electrical generator
US4754161A (en) * 1987-07-31 1988-06-28 Westinghouse Electric Corp. Circuit and method for paralleling AC electrical power systems
US4797570A (en) * 1987-07-31 1989-01-10 Westinghouse Electric Corp. Automatic paralleling of AC power sources
US4766327A (en) * 1987-07-31 1988-08-23 Westinghouse Electric Corp. Circuit and method for synchronizing power sources in a parallel AC electrical power system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3156828A (en) * 1959-03-30 1964-11-10 Gen Electric Protective control for paralleled alternator systems
US3248609A (en) * 1962-12-27 1966-04-26 Westinghouse Electric Corp Protective relaying devices
US3294978A (en) * 1963-02-06 1966-12-27 Westinghouse Electric Corp Unbalanced current protection apparatus for parallel generator systems

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0288642A3 (en) * 1986-12-05 1989-12-06 Westinghouse Electric Corporation Real load unbalance protection circuit and method
EP0446526A3 (en) * 1990-03-12 1992-08-05 Westinghouse Electric Corporation Differential current protection circuits

Also Published As

Publication number Publication date
US3539820A (en) 1970-11-10
JPS5224217B1 (https=) 1977-06-29

Similar Documents

Publication Publication Date Title
EP0053103B1 (en) Circuit for detecting and signalling failure and irregular operation of a charging device for batteries
US3210603A (en) Generator protection
GB1416910A (en) Ac generator system including differential protection of exciter
GB1149889A (en) Improvements in voltage cut-off circuits
GB1216928A (en) Real load unbalance protection circuit for alternating current power sources connected for parallel operation
US3775651A (en) Power system overcurrent protection means utilizing voltage adjustment
US3562545A (en) Automatic generator synchronizing and connecting system and synchronizer apparatus for use therein
GB1323267A (en) Fault indicator circuit for motor vehicle battery charging systems
US3973169A (en) Overvoltage protection for high voltage shunt capacitor banks
GB1350491A (en) Over and under excitation protection circuit for alternating current power systems
GB1148355A (en) Potential regulator circuits
US2862111A (en) Automatic paralleling system
GB1079374A (en) Unbalanced load detection in alternating current system
US3535589A (en) Unbalanced load protection circuit for ac generator
US3351812A (en) Generator protective systems
US3377551A (en) Multiphase current transformer fault indicator
US3249846A (en) Electrical apparatus for initial and short circuit excitation of generators
US3248608A (en) Generator protective device
US3351845A (en) Excitation system for a dynamoelectric machine
US3652933A (en) Apparatus for producing a signal when a selected phase relationship exists between two alternating current voltages of different frequencies
US3032700A (en) Static excitation system for generators
US2422958A (en) Saturable reactor system
US3027509A (en) Electrical control apparatus for generators
US3105186A (en) Horsepower limit control and function generator therefor
US3007105A (en) Electrical control apparatus