CA2682919A1 - Protective relay capable of protection applications without protection settings - Google Patents

Protective relay capable of protection applications without protection settings Download PDF

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Publication number
CA2682919A1
CA2682919A1 CA002682919A CA2682919A CA2682919A1 CA 2682919 A1 CA2682919 A1 CA 2682919A1 CA 002682919 A CA002682919 A CA 002682919A CA 2682919 A CA2682919 A CA 2682919A CA 2682919 A1 CA2682919 A1 CA 2682919A1
Authority
CA
Canada
Prior art keywords
relay
current differential
protection
remote
power line
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.)
Granted
Application number
CA002682919A
Other languages
French (fr)
Other versions
CA2682919C (en
Inventor
Edmund O. Schweitzer, Iii
Tony J. Lee
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.)
Schweitzer Engineering Laboratories Inc
Original Assignee
Schweitzer Engineering Laboratories, Inc.
Edmund O. Schweitzer, Iii
Tony J. Lee
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 Laboratories, Inc., Edmund O. Schweitzer, Iii, Tony J. Lee filed Critical Schweitzer Engineering Laboratories, Inc.
Publication of CA2682919A1 publication Critical patent/CA2682919A1/en
Application granted granted Critical
Publication of CA2682919C publication Critical patent/CA2682919C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H02H3/286—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 involving comparison of similar homopolar quantities
    • 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
    • H02H7/30—Staggered disconnection

Abstract

A protective relay for current differential protection for a selected power line. The relay comprises a local current differential relay for protection of a selected power line portion of a power system, the local current differential relay having the capability of sampling three phase current values from its location on the power line at selected intervals of time and transmitting them to a remote relay also connected to the selected power line for current differential protection. The remote relay is not coordinated with the local current differential relay for protection functions. The local current differential relay includes a sensing function for determining when the relay is connected to a remote relay which has adjustable settings for fault determination, wherein the local current differential relay, upon such determination, disables any protection functions therein while continuing to provide phase current values to the remote relay and to receive trip commands from the remote relay.

Claims (7)

1. A protective relay for current differential protection for a selected power line, comprising:
a local current differential relay for protection of a selected power line portion of a power system, the local current differential relay having the capability of sampling three phase current values from its location on the power line at selected intervals of time and transmitting them to a remote relay also connected to the selected power line for current differential protection, wherein the remote relay is not coordinated with said local current differential relay for protection functions; and a sensing function in the local current differential relay for determining when said relay is connected to a remote relay which has adjustable settings for fault determination, wherein the local current differential relay, upon such determination, disables any protection functions therein while continuing to provide phase current values to the remote relay and to receive trip commands from the remote relay.
2. A protective relay of claim 1, wherein the sensing function is responsive to a signal from the remote relay, indicating that it has adjustable settings.
3. A protective relay of claim 2, wherein said signal is part of a data packet sent by the remote relay to the current differential relay.
4. A protective relay of claim 2, wherein the signal is part or the format of the data packet.
5. A protective relay of claim 1, wherein the local current differential relay is a relay having an adjustable settings capability.
6. A protective relay of claim 1, wherein the local current differential relay is not capable of providing any protection functions.
7. A protective relay of claim 1, wherein the selected power line is an intertie.
CA2682919A 2003-04-07 2004-04-07 Protective relay capable of protection applications without protection settings Expired - Fee Related CA2682919C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10/409,355 US7123459B2 (en) 2003-04-07 2003-04-07 Protective relay capable of protection applications without protection settings
US10/409,355 2003-04-07
CA2463575A CA2463575C (en) 2003-04-07 2004-04-07 Protective relay capable of protection applications without protection settings

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CA2463575A Division CA2463575C (en) 2003-04-07 2004-04-07 Protective relay capable of protection applications without protection settings

Publications (2)

Publication Number Publication Date
CA2682919A1 true CA2682919A1 (en) 2004-10-07
CA2682919C CA2682919C (en) 2010-10-12

Family

ID=33097830

Family Applications (2)

Application Number Title Priority Date Filing Date
CA2463575A Expired - Fee Related CA2463575C (en) 2003-04-07 2004-04-07 Protective relay capable of protection applications without protection settings
CA2682919A Expired - Fee Related CA2682919C (en) 2003-04-07 2004-04-07 Protective relay capable of protection applications without protection settings

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CA2463575A Expired - Fee Related CA2463575C (en) 2003-04-07 2004-04-07 Protective relay capable of protection applications without protection settings

Country Status (7)

Country Link
US (2) US7123459B2 (en)
AU (1) AU2004201474B2 (en)
BR (1) BRPI0402390A (en)
CA (2) CA2463575C (en)
MX (1) MXPA04003328A (en)
NZ (1) NZ532214A (en)
ZA (1) ZA200402726B (en)

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CN113725826A (en) * 2021-04-19 2021-11-30 保定钰鑫电气科技有限公司 Fault processing method for interphase short circuit

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US7123459B2 (en) * 2003-04-07 2006-10-17 Schweitzer Engineering Laboratories, Inc. Protective relay capable of protection applications without protection settings
CN100395933C (en) * 2004-12-24 2008-06-18 许继集团有限公司 Method for discriminating directions of fault components in positive / negative sequence, and direction of homopolar power
MX2010002163A (en) * 2007-09-28 2010-06-02 Schweitzer Engineering Lab Inc Amplitude and phase comparators for line protection.
US20090088990A1 (en) * 2007-09-30 2009-04-02 Schweitzer Iii Edmund O Synchronized phasor processor for a power system
CA2702210C (en) * 2007-10-09 2014-03-18 Schweitzer Engineering Laboratories, Inc. Transformer through-fault current monitor
US7903381B2 (en) * 2008-03-11 2011-03-08 Schweitzer Engineering Laboratories, Inc. Negative sequence differential element
EP2289137A1 (en) * 2008-06-18 2011-03-02 Siemens Aktiengesellschaft Method and arrangement for generating an error signal
ES2754711T3 (en) * 2008-09-25 2020-04-20 Schneider Electric Ind Sas Directional detection of a ground fault
US8558551B2 (en) * 2010-04-21 2013-10-15 Schweitzer Engineering Laboratories Inc Fault location in electric power delivery systems
US8717725B2 (en) 2010-12-02 2014-05-06 Schweitzer Engineering Laboratories Inc Dual-comparator restricted earth fault protection
CN102118023A (en) * 2011-03-01 2011-07-06 许继集团有限公司 Asymmetric identification method of fiber channel for three-terminal differential protection of T connection line
US8717721B2 (en) * 2011-08-25 2014-05-06 Southern States, Llc High impedance fault isolation system
US8791704B2 (en) * 2011-10-11 2014-07-29 Schweitzer Engineering Laboratories Inc. Fault-type identification for electric power delivery systems
CN102403699B (en) * 2011-11-08 2014-04-23 西安交通大学 Self-adaptive current differential protection method for direct-current lines
CN102694375B (en) * 2012-06-11 2014-07-30 国家电网公司 Ultra high-voltage alternating current transmission line protection method based on all-component differential coefficient matrix
CN103001196B (en) * 2012-11-13 2015-09-30 江苏省电力公司镇江供电公司 The relay protecting method of excision failure in transformer dead zone
CN103063984A (en) * 2012-12-20 2013-04-24 北京交通大学 Power distribution network single-phase earth fault line selection method based on line double-terminal negative sequence current
CN103346540B (en) * 2013-03-25 2016-04-27 浙江大学 A kind of hybrid line traveling wave differential protecting method adopting phase current to brake
CN103326333B (en) * 2013-05-24 2015-09-16 广东电网公司东莞供电局 A kind of differential protecting method of asymmetric electric transmission line fault and system thereof
CN104037738B (en) * 2013-12-24 2018-04-17 许继集团有限公司 3/2 wiring T areas short leg differential protection starts method and differential protecting method
CN104037742A (en) * 2014-07-09 2014-09-10 国家电网公司 Extra-high voltage alternating current transmission line protection method
CN104092196B (en) * 2014-07-15 2017-01-18 国家电网公司 Ultra-high voltage alternating-current transmission line relay protection method
CN104078950B (en) * 2014-07-15 2017-02-22 国家电网公司 Ultra-high voltage transmission line relay protection method based on positive-sequence break variable differential coefficient matrix
CN104319749B (en) * 2014-11-14 2017-04-26 国家电网公司 Line phase-to-phase fault relay protection method based on fault location factor phase characteristics
CN104319750B (en) * 2014-11-14 2017-06-27 国家电网公司 Circuit phase fault relay protecting method based on the abort situation factor
US9660438B2 (en) 2014-11-26 2017-05-23 Schweitzer Engineering Laboratories, Inc. Secure and dependable differential protection for electric power generators
CN104716636B (en) * 2015-03-11 2018-02-13 国电南瑞科技股份有限公司 The method for preventing distance protection III sections from making by overload mis-operation
CN104701830A (en) * 2015-03-24 2015-06-10 北京四方继保自动化股份有限公司 System and method for identifying overloads and system and method for protecting distances
CN104852366B (en) * 2015-05-20 2018-08-24 天津大学 The direct-flow distribution system short trouble guard method of the current limiter containing resistive superconducting
CN105140894B (en) * 2015-08-07 2018-09-25 许继电气股份有限公司 A kind of power distribution network differential protecting method based on Phase Difference Principle
CN105071346B (en) * 2015-08-27 2017-11-21 南京国电南自电网自动化有限公司 A kind of forward-order current for preventing restricted earth protection malfunction intersects braking method
CN105244857B (en) * 2015-10-10 2017-12-19 江苏省电力公司苏州供电公司 Prevent power network distance protection first start after decompression malfunction method
CN105391035B (en) * 2015-12-15 2017-11-24 华北电力大学 The differential protection system of transmission line of electricity and guard method based on fault compression
CN106526291A (en) * 2016-11-04 2017-03-22 国网山东省电力公司潍坊供电公司 Bypass operation low voltage rapid conversion device, and monitoring, releasing and displaying methods thereof
CN106711963B (en) * 2016-11-17 2018-11-20 云南电网有限责任公司电力科学研究院 Multistage route differential protective system and method
CN106711964B (en) * 2016-11-17 2018-11-13 云南电网有限责任公司电力科学研究院 Double line terminal differential protective system and method
CN107104414B (en) * 2017-05-04 2019-06-11 中国南方电网有限责任公司 A kind of relay protection maintenance aid decision-making method based on online data
CN108110737B (en) * 2017-11-28 2019-06-25 酒泉钢铁(集团)有限责任公司 6-10kV isolated neutral system casing zero sequence optical differential protective relaying device
US10859639B2 (en) 2018-10-02 2020-12-08 Schweitzer Engineering Laboratories, Inc. Fault-type identification in an electric power delivery system using composite signals
US11177645B2 (en) 2019-11-22 2021-11-16 Schweitzer Engineering Laboratories, Inc. Systems and methods for improving restricted earth fault protection
US11469588B2 (en) 2020-08-31 2022-10-11 Schweitzer Engineering Laboratories, Inc. Electric power system differential protection with DC compensation
US11411390B2 (en) 2020-12-31 2022-08-09 Schweitzer Engineering Laboratories, Inc. Secure and dependable restricted earth fault protection for electric power generators and transformers

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US4795983A (en) * 1988-03-07 1989-01-03 Westinghouse Electric Corp. Method and apparatus for identifying a faulted phase
US4896241A (en) * 1989-02-28 1990-01-23 Westinghouse Electric Corp. Directional comparison blocking protective relay system
US5793750A (en) * 1995-10-20 1998-08-11 Schweitzer Engineering Laboratories, Inc. System of communicating output function status indications between two or more power system protective relays
US7123459B2 (en) * 2003-04-07 2006-10-17 Schweitzer Engineering Laboratories, Inc. Protective relay capable of protection applications without protection settings

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113725826A (en) * 2021-04-19 2021-11-30 保定钰鑫电气科技有限公司 Fault processing method for interphase short circuit
CN113725826B (en) * 2021-04-19 2023-12-05 保定钰鑫电气科技有限公司 Fault processing method for interphase short circuit

Also Published As

Publication number Publication date
AU2004201474B2 (en) 2009-01-08
NZ532214A (en) 2004-11-26
US20040196603A1 (en) 2004-10-07
CA2463575C (en) 2011-09-13
BRPI0402390A (en) 2004-12-07
US7375941B2 (en) 2008-05-20
MXPA04003328A (en) 2006-04-27
US7123459B2 (en) 2006-10-17
CA2463575A1 (en) 2004-10-07
ZA200402726B (en) 2005-07-27
CA2682919C (en) 2010-10-12
AU2004201474A1 (en) 2004-10-21
US20070035902A1 (en) 2007-02-15

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