GB2578532B - Current differential relay and sampling synchronization method - Google Patents

Current differential relay and sampling synchronization method Download PDF

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Publication number
GB2578532B
GB2578532B GB1918810.1A GB201918810A GB2578532B GB 2578532 B GB2578532 B GB 2578532B GB 201918810 A GB201918810 A GB 201918810A GB 2578532 B GB2578532 B GB 2578532B
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GB
United Kingdom
Prior art keywords
synchronization method
current differential
differential relay
sampling synchronization
sampling
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.)
Active
Application number
GB1918810.1A
Other versions
GB2578532A (en
GB201918810D0 (en
Inventor
Oda Shigetoo
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of GB201918810D0 publication Critical patent/GB201918810D0/en
Publication of GB2578532A publication Critical patent/GB2578532A/en
Application granted granted Critical
Publication of GB2578532B publication Critical patent/GB2578532B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • H02H3/30—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 using pilot wires or other signalling channel
    • H02H3/302—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 using pilot wires or other signalling channel involving phase comparison
    • 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
    • H02H3/30—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 using pilot wires or other signalling channel
    • H02H3/305—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 using pilot wires or other signalling channel involving current comparison

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)
GB1918810.1A 2017-08-30 2017-08-30 Current differential relay and sampling synchronization method Active GB2578532B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2017/031106 WO2019043821A1 (en) 2017-08-30 2017-08-30 Current differential relay and sampling synchronization method

Publications (3)

Publication Number Publication Date
GB201918810D0 GB201918810D0 (en) 2020-02-05
GB2578532A GB2578532A (en) 2020-05-13
GB2578532B true GB2578532B (en) 2022-05-04

Family

ID=61074716

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1918810.1A Active GB2578532B (en) 2017-08-30 2017-08-30 Current differential relay and sampling synchronization method

Country Status (4)

Country Link
JP (1) JP6271114B1 (en)
KR (1) KR102378031B1 (en)
GB (1) GB2578532B (en)
WO (1) WO2019043821A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109103857B (en) * 2018-10-16 2020-10-16 南京南瑞继保电气有限公司 Method and device for monitoring synchronous state of pilot channel for line protection
JP7499595B2 (en) 2020-04-10 2024-06-14 三菱電機株式会社 Distance Relay
KR102464084B1 (en) * 2020-07-14 2022-11-08 한국전력공사 System and Method for calculating compensation element of charge current
CN114421440B (en) * 2021-12-29 2023-07-14 长园深瑞继保自动化有限公司 Differential protection method for power distribution network line, terminal equipment and storage medium
CN115356586B (en) * 2022-08-01 2024-07-02 北京四方继保工程技术有限公司 Double-end time synchronization method and system for power transmission line
JP7542684B1 (en) 2023-05-30 2024-08-30 三菱電機株式会社 Protection relay system and protection relay device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008125251A (en) * 2006-11-13 2008-05-29 Mitsubishi Electric Corp Relay system and pcm current differential relay system in electric power station
JP2011200100A (en) * 2010-02-24 2011-10-06 Hitachi Ltd Protection relay system and protective relay device
JP2015142416A (en) * 2014-01-28 2015-08-03 株式会社東芝 Protection relay device and protection system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62262615A (en) 1986-05-07 1987-11-14 三菱電機株式会社 Method of synchronizing sampled signal
JP2735359B2 (en) 1990-05-08 1998-04-02 株式会社東芝 Sampling synchronizer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008125251A (en) * 2006-11-13 2008-05-29 Mitsubishi Electric Corp Relay system and pcm current differential relay system in electric power station
JP2011200100A (en) * 2010-02-24 2011-10-06 Hitachi Ltd Protection relay system and protective relay device
JP2015142416A (en) * 2014-01-28 2015-08-03 株式会社東芝 Protection relay device and protection system

Also Published As

Publication number Publication date
KR20200014914A (en) 2020-02-11
WO2019043821A1 (en) 2019-03-07
JPWO2019043821A1 (en) 2019-11-07
KR102378031B1 (en) 2022-03-24
GB2578532A (en) 2020-05-13
GB201918810D0 (en) 2020-02-05
JP6271114B1 (en) 2018-01-31

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