BR9914383A - Sistema de monitoração de corrente contìnua para uso em subestações de energia elétrica - Google Patents

Sistema de monitoração de corrente contìnua para uso em subestações de energia elétrica

Info

Publication number
BR9914383A
BR9914383A BR9914383-6A BR9914383A BR9914383A BR 9914383 A BR9914383 A BR 9914383A BR 9914383 A BR9914383 A BR 9914383A BR 9914383 A BR9914383 A BR 9914383A
Authority
BR
Brazil
Prior art keywords
monitoring system
direct current
current monitoring
electrical substations
identified
Prior art date
Application number
BR9914383-6A
Other languages
English (en)
Inventor
Jeffrey B Roberts
Tony J Lee
David E Whitehead
Original Assignee
Schweitzer Engineering Lab Inc
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 Schweitzer Engineering Lab Inc filed Critical Schweitzer Engineering Lab Inc
Publication of BR9914383A publication Critical patent/BR9914383A/pt

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
    • H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
    • H02H7/268—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured for dc systems
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00—Details of emergency protective circuit arrangements
    • H02H1/06—Arrangements for supplying operative power
    • 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
    • H02H3/16—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 fault current to earth, frame or mass

Landscapes

  • Emergency Protection Circuit Devices (AREA)
  • Emergency Alarm Devices (AREA)

Abstract

"SISTEMA DE MONITORAçãO DE CORRENTE CONTìNUA PARA USO EM SUBESTAçõES DE ENERGIA ELéTRICA". Um sistema de monitoração de corrente continua (CC) é provido em cada relé de segurança em uma subestação de energia elétrica para a detecção de aterramento de CC no sistema de suprimento de CC. O sistema de monitoração de CC inclui uma primeira parte (62,64) que indica a presença de uma ligação à terra de CC. Em uma segunda parte do sistema (76,78), as tensões nas entradas de contato do relé são identificadas e comparadas contra uma gama de valor de tensão padrão. Uma indicação é fornecida quando a tensão identificada está dentro da gama. A combinação das indicações provenientes das primeira e segunda partes é útil no determinar a locação de aterramentos de CC no sistema de suprimento de CC da subestação.
BR9914383-6A 1998-10-08 1999-10-06 Sistema de monitoração de corrente contìnua para uso em subestações de energia elétrica BR9914383A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/169,370 US6084755A (en) 1998-10-08 1998-10-08 Protective relay-based monitoring system of DC power within an electric power substation
PCT/US1999/023333 WO2000021175A1 (en) 1998-10-08 1999-10-06 A protective relay-based monitoring system of dc power within an electric power substation

Publications (1)

Publication Number Publication Date
BR9914383A true BR9914383A (pt) 2002-01-15

Family

ID=22615387

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9914383-6A BR9914383A (pt) 1998-10-08 1999-10-06 Sistema de monitoração de corrente contìnua para uso em subestações de energia elétrica

Country Status (6)

Country Link
US (1) US6084755A (pt)
EP (1) EP1119891A4 (pt)
AU (1) AU761774B2 (pt)
BR (1) BR9914383A (pt)
CA (1) CA2346732C (pt)
WO (1) WO2000021175A1 (pt)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070067132A1 (en) * 2005-09-19 2007-03-22 Tziouvaras Demetrios A Method and apparatus for routing data streams among intelligent electronic devices
US7755872B2 (en) * 2006-09-14 2010-07-13 Schweitzer Engineering Laboratories, Inc. System, method and device to preserve protection communication active during a bypass operation
US8040139B2 (en) * 2009-02-16 2011-10-18 Maxim Integrated Products, Inc. Fault detection method for detecting leakage paths between power sources and chassis
US8598897B2 (en) * 2010-01-26 2013-12-03 Maxim Integrated Products, Inc. Isolation monitoring system and method utilizing a variable emulated inductance
CN106707083A (zh) * 2016-12-28 2017-05-24 国家电网公司 一种变电站直流接地检测装置
JP6932964B2 (ja) * 2017-03-25 2021-09-08 東京電力ホールディングス株式会社 直流電源供給回路の断線判別装置及び配線判別装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3619775A (en) * 1969-11-25 1971-11-09 Pulse Monitors Inc Polarity and voltage level detecting test probe
CA933237A (en) * 1971-06-16 1973-09-04 A. I. Young John Dc bus resistive path to ground fault detector
US4929901A (en) * 1985-09-06 1990-05-29 Dorr Kimball DC ground fault detection
US5530363A (en) * 1994-10-31 1996-06-25 John Gaughan DC ground fault detecting apparatus with an auto-null circuit and method

Also Published As

Publication number Publication date
AU761774B2 (en) 2003-06-12
AU6418999A (en) 2000-04-26
US6084755A (en) 2000-07-04
WO2000021175A1 (en) 2000-04-13
CA2346732A1 (en) 2000-04-13
CA2346732C (en) 2008-08-05
EP1119891A4 (en) 2002-03-20
EP1119891A1 (en) 2001-08-01

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Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 7A, 8A E 9A ANUIDADES.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO PUBLICADO NA RPI 1962 DE 12/08/2008.