AU2001269667A1 - Current compensation method and device for power system protection - Google Patents

Current compensation method and device for power system protection

Info

Publication number
AU2001269667A1
AU2001269667A1 AU2001269667A AU6966701A AU2001269667A1 AU 2001269667 A1 AU2001269667 A1 AU 2001269667A1 AU 2001269667 A AU2001269667 A AU 2001269667A AU 6966701 A AU6966701 A AU 6966701A AU 2001269667 A1 AU2001269667 A1 AU 2001269667A1
Authority
AU
Australia
Prior art keywords
sub
zone
continuously
transmission lines
protection system
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.)
Abandoned
Application number
AU2001269667A
Inventor
Zoran Gajic
Mikael Goransson
Jianping Wang
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.)
ABB AB
Original Assignee
ABB AB
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 ABB AB filed Critical ABB AB
Publication of AU2001269667A1 publication Critical patent/AU2001269667A1/en
Abandoned legal-status Critical Current

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
    • H02H3/26—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 difference between voltages or between currents; responsive to phase angle between voltages or between currents
    • H02H3/28—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 difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at two spaced portions of a single system, e.g. at opposite ends of one line, at input and output of apparatus
    • H02H3/283—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 difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at two spaced portions of a single system, e.g. at opposite ends of one line, at input and output of apparatus and taking into account saturation of current transformers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Amplifiers (AREA)

Abstract

The present invention relates to a method for current compensation of a protection system for protecting a zone in a power system, which zone comprises a number of transmission lines connected to power sources and a number of transmission lines connected to a number of loads where the power sources and the loads are arranged outside the zone and a number of current transformers (CT) arranged to the transmission lines, wherein the method comprises the steps of continuously measuring all the incoming currents (I<SUB>in</SUB>) to the zone, continuously measuring all the outgoing currents (I<SUB>out</SUB>) from the zone, continuously calculating the differential current (I<SUB>d</SUB>) according to I<SUB>d</SUB>=I<SUB>in</SUB>-I<SUB>out</SUB>, continuously calculating q=I<SUB>out</SUB>/I<SUB>in</SUB>, continuously comparing q with set values and continuously comparing I<SUB>out </SUB>with a set value Set1. The invention is characterised by setting I<SUB>out</SUB>=I<SUB>in</SUB>=I<SUB>comp </SUB>at the instant when q changes and I<SUB>out </SUB>exceeds the value set1, which is an indication of the occurrence of a fault external to the protection zone due to saturation of the CT of the faulted outgoing transmission line, and using the value I<SUB>comp </SUB>in the protection system in order to prevent tripping of the protection system. The present invention also relates to a device and a computer program product for performing the method.
AU2001269667A 2000-07-12 2001-07-11 Current compensation method and device for power system protection Abandoned AU2001269667A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE0002632A SE518947C2 (en) 2000-07-12 2000-07-12 Power compensation method and power system protection device
SE0002632 2000-07-12
PCT/SE2001/001604 WO2002004967A1 (en) 2000-07-12 2001-07-11 Current compensation method and device for power system protection

Publications (1)

Publication Number Publication Date
AU2001269667A1 true AU2001269667A1 (en) 2002-01-21

Family

ID=20280467

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2001269667A Abandoned AU2001269667A1 (en) 2000-07-12 2001-07-11 Current compensation method and device for power system protection

Country Status (9)

Country Link
US (1) US7002784B2 (en)
EP (1) EP1311866B1 (en)
AT (1) ATE374372T1 (en)
AU (1) AU2001269667A1 (en)
CA (1) CA2427821C (en)
DE (1) DE60130664T2 (en)
ES (1) ES2294006T3 (en)
SE (1) SE518947C2 (en)
WO (1) WO2002004967A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2423424B (en) * 2005-02-22 2009-10-28 Areva T & D Uk Ltd A method and an apparatus for supervising the operation of current transformers
US8405944B2 (en) * 2007-10-09 2013-03-26 Schweitzer Engineering Laboratories Inc Distributed bus differential protection using time-stamped data
FI125501B (en) * 2013-02-14 2015-10-30 Abb Technology Oy Control system for semiconductors
CN104466903B (en) * 2014-11-26 2017-04-19 济南大学 Current transformer saturation recognition method for differential protection
RU2615614C1 (en) * 2015-11-19 2017-04-05 федеральное государственное автономное образовательное учреждение высшего образования "Северо-Кавказский федеральный университет" Method for specifying actuation line of relay protection measuring device by comparing two specially generated signals
WO2020144150A1 (en) * 2019-01-08 2020-07-16 Abb Power Grids Switzerland Ag Differential protection of a transmission line
US11177645B2 (en) * 2019-11-22 2021-11-16 Schweitzer Engineering Laboratories, Inc. Systems and methods for improving restricted earth fault protection
CN112345882B (en) * 2020-10-14 2022-10-11 云南电网有限责任公司文山供电局 Rapid fault detection method based on fuzzy inference system

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS596715A (en) * 1982-07-01 1984-01-13 三菱電機株式会社 Differential protecting relaying device
JPS59162711A (en) * 1983-03-04 1984-09-13 株式会社東芝 Protective relaying device
US4862308A (en) 1987-05-01 1989-08-29 Electric Power Research Institute, Inc. Power bus fault detection and protection system
DE4230059C1 (en) 1992-09-07 1994-03-17 Siemens Ag Method for obtaining a trigger signal by comparing currents at the ends of a section of an electrical energy transmission line to be monitored
CA2106357A1 (en) 1993-07-07 1995-01-08 Murty V. V. S. Yalla Method for implementing selectable protective relay functions
US5809045A (en) 1996-09-13 1998-09-15 General Electric Company Digital current differential system
US6356421B1 (en) * 1999-11-29 2002-03-12 Schweitzer Engineering Labs., Inc. System for power transformer differential protection
US6829544B1 (en) * 2000-04-10 2004-12-07 General Electric Company Line current differential protective relaying method and relay for in-zone tapped transformers
US6501631B1 (en) * 2000-04-14 2002-12-31 Abb Ab Method and device for power system protection

Also Published As

Publication number Publication date
SE0002632L (en) 2002-01-13
EP1311866B1 (en) 2007-09-26
ES2294006T3 (en) 2008-04-01
WO2002004967A1 (en) 2002-01-17
US20040090728A1 (en) 2004-05-13
SE518947C2 (en) 2002-12-10
DE60130664T2 (en) 2008-07-03
CA2427821A1 (en) 2002-01-17
DE60130664D1 (en) 2007-11-08
US7002784B2 (en) 2006-02-21
CA2427821C (en) 2011-03-29
EP1311866A1 (en) 2003-05-21
SE0002632D0 (en) 2000-07-12
ATE374372T1 (en) 2007-10-15

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