BR7907178A - Aparelho para fornecimento de sinais de saida responsivos a uma corrente que passa em um sistema de energia eletrica trifasica - Google Patents

Aparelho para fornecimento de sinais de saida responsivos a uma corrente que passa em um sistema de energia eletrica trifasica

Info

Publication number
BR7907178A
BR7907178A BR7907178A BR7907178A BR7907178A BR 7907178 A BR7907178 A BR 7907178A BR 7907178 A BR7907178 A BR 7907178A BR 7907178 A BR7907178 A BR 7907178A BR 7907178 A BR7907178 A BR 7907178A
Authority
BR
Brazil
Prior art keywords
appliance
passes
current
electric power
output signals
Prior art date
Application number
BR7907178A
Other languages
English (en)
Inventor
C Sun Shan
L Church
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 BR7907178A publication Critical patent/BR7907178A/pt

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/46—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to frequency deviations
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Eletrric Generators (AREA)
  • Protection Of Generators And Motors (AREA)
  • Emergency Protection Circuit Devices (AREA)
BR7907178A 1978-11-08 1979-11-06 Aparelho para fornecimento de sinais de saida responsivos a uma corrente que passa em um sistema de energia eletrica trifasica BR7907178A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/959,045 US4208687A (en) 1978-11-08 1978-11-08 Protective relay apparatus

Publications (1)

Publication Number Publication Date
BR7907178A true BR7907178A (pt) 1980-09-16

Family

ID=25501607

Family Applications (1)

Application Number Title Priority Date Filing Date
BR7907178A BR7907178A (pt) 1978-11-08 1979-11-06 Aparelho para fornecimento de sinais de saida responsivos a uma corrente que passa em um sistema de energia eletrica trifasica

Country Status (11)

Country Link
US (1) US4208687A (pt)
JP (1) JPS5566227A (pt)
KR (1) KR830001530B1 (pt)
BR (1) BR7907178A (pt)
DE (1) DE2944521A1 (pt)
ES (1) ES8100568A1 (pt)
FR (1) FR2441285A1 (pt)
GB (1) GB2038119B (pt)
IT (1) IT1125624B (pt)
MX (1) MX150100A (pt)
SE (1) SE7909204L (pt)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4470091A (en) * 1982-10-20 1984-09-04 Westinghouse Electric Corp. Productive relay apparatus for protection from sub-synchronous current oscillations in a power system
US4607217A (en) * 1983-09-28 1986-08-19 Southern California Edison Company, Inc. Subsynchronous resonance detection
US4903163A (en) * 1989-05-09 1990-02-20 The United States Of America As Represented By The Secretary Of The Interior Directional harmonic overcurrent relay device
US5453901A (en) * 1993-10-12 1995-09-26 General Electric Co. Detection and protection of excitation system from diode failure
US5585720A (en) * 1995-10-23 1996-12-17 Western Atlas International, Inc. Signal processing method for multiexponentially decaying signals and application to nuclear magnetic resonance well logging tools
US5796629A (en) * 1995-12-18 1998-08-18 Abb Power T&D Company, Inc. Protective relaying system comprising numerical comparator-based line differential processing circuitry
US6774614B2 (en) 2002-02-27 2004-08-10 General Electric Company Method and apparatus for detecting current
US8575915B2 (en) * 2010-02-16 2013-11-05 Rockwell Automation Technologies, Inc. Power control system and method
US7939956B1 (en) 2010-04-09 2011-05-10 General Electric Company Torsional protection system and method for wind turbine
US10622923B2 (en) 2015-06-29 2020-04-14 Vestas Wind Systems A/S Sub-synchronous resonance damping

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3813593A (en) * 1973-05-04 1974-05-28 Gen Electric Reduction of turbine generator shaft torques
US3944846A (en) * 1974-03-19 1976-03-16 Southern California Edison Company Subsynchronous relay
US3992651A (en) * 1975-04-01 1976-11-16 General Electric Company Active symmetrical component network for protective relays
US4125884A (en) * 1977-01-06 1978-11-14 Westinghouse Electric Corp. Apparatus for detecting subsynchronous current in power systems
US4106071A (en) * 1977-01-06 1978-08-08 Westinghouse Electric Corp. Apparatus for protection against subsynchronous currents in a power system

Also Published As

Publication number Publication date
IT1125624B (it) 1986-05-14
MX150100A (es) 1984-03-15
ES485761A0 (es) 1980-11-01
DE2944521A1 (de) 1980-05-22
GB2038119B (en) 1982-08-25
JPS5636649B2 (pt) 1981-08-25
FR2441285A1 (fr) 1980-06-06
SE7909204L (sv) 1980-05-09
US4208687A (en) 1980-06-17
IT7927088A0 (it) 1979-11-07
GB2038119A (en) 1980-07-16
KR830001530B1 (ko) 1983-08-08
JPS5566227A (en) 1980-05-19
KR830001747A (ko) 1983-05-18
ES8100568A1 (es) 1980-11-01
FR2441285B1 (pt) 1984-01-06

Similar Documents

Publication Publication Date Title
BR7907180A (pt) Aparelho para fornecimento de sinais de saida sensiveis as correntes sub sincronas que passam em um sistema de energia eletrica trifasica
MX155953A (es) Mejoras a un sistema hibrido generador de energia electrica
PL213291A1 (pl) Uklad do wytwarzania mocy elektrycznej
IL68114A0 (en) Wind turbine system for generating electric power
DK332881A (da) Vinddrevne elektriske generatorer med diffusereffektforoegelse
BR8304318A (pt) Geracao de energia
BR8200153A (pt) Sistema medidor de energia eletrica de ca
BR8205988A (pt) Processo e aparelho para detecao de uma falha monofasica a terra em um sistema trifasico de energia eletrica
MX156911A (es) Mejoras a sistema de interconexion de dos aldes de distribucion de energia electrica trifasica
MX158146A (es) Mejoras en sistema generador de energia electrica
MX154756A (es) Mejoras a sistema para proteccion contra fallas de energia electrica en un elevador
BR7907178A (pt) Aparelho para fornecimento de sinais de saida responsivos a uma corrente que passa em um sistema de energia eletrica trifasica
MX152067A (es) Mejoras a contactor trifasico para distribucion de energia electrica
GB2001395B (en) System for generating electrical energy utilizing combined water power and combustible fuel sources
GB2099243B (en) Switch device for connecting ac power source to load
ES485547A0 (es) Perfeccionamientos en conjuntos de generadores de energia electrica con componentes consumibles
BR8201594A (pt) Sistema de geracao de energia eletrica de ciclo combinado
DK237982A (da) Energikilde der anvender et elektrisk energifrembringelsesaggregat
PH16632A (en) Device for starting ac load using ac generator as power source
BR7904366A (pt) Medidor de energia de ca
DK294779A (da) Kobling til frembringelse af en af en vekselspaending afhaengig styrejaevnspaending
NO822603L (no) Anordning for elektrisk stroemtilfoersel til elektriske apparater
DK484279A (da) Kobling til frembringelse af en af en vekselspaending afhaengigstyrejaevnspaending
JPS5597147A (en) Inverter control system connected to electric power system
YU256779A (en) Arrangement for connecting electric power consumers to conductors of the supply line

Legal Events

Date Code Title Description
MK Patent expired

Effective date: 19941106