SG11201909827PA - Dc ground fault detection system and dc ground fault detection method for dc electric railway - Google Patents

Dc ground fault detection system and dc ground fault detection method for dc electric railway

Info

Publication number
SG11201909827PA
SG11201909827PA SG11201909827PA SG11201909827PA SG 11201909827P A SG11201909827P A SG 11201909827PA SG 11201909827P A SG11201909827P A SG 11201909827PA SG 11201909827P A SG11201909827P A SG 11201909827PA
Authority
SG
Singapore
Prior art keywords
ground fault
fault detection
rail
short
circuit switch
Prior art date
Application number
Inventor
Hiroto Ikeda
Kazuo Fukuda
Original Assignee
Meidensha Electric Mfg Co Ltd
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 Meidensha Electric Mfg Co Ltd filed Critical Meidensha Electric Mfg Co Ltd
Publication of SG11201909827PA publication Critical patent/SG11201909827PA/en

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
    • H02H7/261—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 involving signal transmission between at least two stations
    • H02H7/263—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 involving signal transmission between at least two stations involving transmissions of measured values
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
    • B60M3/00—Feeding power to supply lines in contact with collector on vehicles; Arrangements for consuming regenerative 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
    • 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
    • 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
    • H02H3/006—Calibration or setting of parameters
    • 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
    • H02H3/38—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 both voltage and current; responsive to phase angle between voltage and current
    • H02H3/385—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 both voltage and current; responsive to phase angle between voltage and current using at least one homopolar quantity

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Locating Faults (AREA)

Abstract

DC GROUND FAULT DETECTION SYSTEM AND DC GROUND FAULT DETECTION METHOD FOR DC ELECTRIC RAILWAY In a DC electric railway to supply DC power to an electric railway car through feeder lines from a plurality of feeding substations, a task is to discriminate a section of a ground fault accident accurately. A VLD control and data collection device 51 is provided in each of feeding 10 sections of the feeding substations. The device 51 includes a short-circuit switch (VLD 50) connected between a rail 37 and an earth 38 and arranged to be closed when a rail-earth voltage between the rail and the earth becomes higher than or equal to a preset voltage. The device 51 collects electric information including the rail-earth voltage 15 and a passage current passing through the short-circuit switch after closure of the short-circuit switch. A ground fault discrimination device 60 is provided to discriminate a ground fault accident from a current magnitude, a conduction time and a conduction direction of the passage current flowing through the short-circuit switch by using the electric 20 information collected by each of the VLD control and data collection devices 51. FIG.1 -38-
SG11201909827P 2017-04-26 2017-12-28 Dc ground fault detection system and dc ground fault detection method for dc electric railway SG11201909827PA (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2017086743 2017-04-26
JP2017179982A JP6299920B1 (en) 2017-04-26 2017-09-20 DC ground fault detection system and DC ground fault detection method for DC electric railway
PCT/JP2017/047213 WO2018198438A1 (en) 2017-04-26 2017-12-28 Dc ground fault detection system and dc ground fault detection method for dc electric railway

Publications (1)

Publication Number Publication Date
SG11201909827PA true SG11201909827PA (en) 2019-11-28

Family

ID=61756520

Family Applications (1)

Application Number Title Priority Date Filing Date
SG11201909827P SG11201909827PA (en) 2017-04-26 2017-12-28 Dc ground fault detection system and dc ground fault detection method for dc electric railway

Country Status (4)

Country Link
EP (1) EP3614513B1 (en)
JP (1) JP6299920B1 (en)
SG (1) SG11201909827PA (en)
WO (1) WO2018198438A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109532573A (en) * 2018-09-25 2019-03-29 苏州万龙电气集团股份有限公司 A kind of contact net emergency contact method of supplying power to based on cloud service
JP7198627B2 (en) * 2018-10-12 2023-01-04 株式会社日立製作所 Rail vehicle and power control method for rail vehicle
EP3713029A1 (en) * 2019-03-18 2020-09-23 Siemens Aktiengesellschaft Locating an earth fault in a dc network with multiple load zones
JP7244321B2 (en) * 2019-03-25 2023-03-22 東日本旅客鉄道株式会社 HIGH RESISTANCE GROUND FAULT DETECTION DEVICE AND DETECTION METHOD FOR DC FEEDER LINE
JP7396938B2 (en) 2020-03-13 2023-12-12 株式会社日立製作所 Rail-to-ground voltage suppression system
JP7309681B2 (en) 2020-11-10 2023-07-18 本田技研工業株式会社 saddle-riding vehicle
CN113238124B (en) * 2021-03-29 2022-09-13 中车青岛四方机车车辆股份有限公司 Alternating current insulation detection system and method and railway vehicle
CN113937736B (en) * 2021-10-15 2023-12-19 劲逐软件技术(深圳)有限公司 Power system fault protection system and protection method

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3915050B2 (en) * 1998-12-29 2007-05-16 株式会社指月電機製作所 Accident current detection device and accident section discrimination method in feeding equipment
KR100694279B1 (en) * 2005-06-18 2007-03-14 한국철도기술연구원 Ground fault protective relaying method using distance relay in traction power supply system
JP5425567B2 (en) * 2009-09-04 2014-02-26 公益財団法人鉄道総合技術研究所 Superconducting DC feeding system and fault detection method
KR101080265B1 (en) * 2010-08-25 2011-11-08 한국철도기술연구원 Rail potential control system capable of distinguishing between ground fault and non-ground fault when rising from the rail potential
JP5951237B2 (en) * 2011-11-21 2016-07-13 株式会社東芝 DC feeder protection relay device
JP6220209B2 (en) * 2013-09-30 2017-10-25 株式会社東芝 DC feeding protection control system

Also Published As

Publication number Publication date
WO2018198438A1 (en) 2018-11-01
JP2018185284A (en) 2018-11-22
EP3614513A4 (en) 2021-01-06
JP6299920B1 (en) 2018-03-28
EP3614513A1 (en) 2020-02-26
EP3614513B1 (en) 2021-11-03

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