JPS6416970A - Fault point locating system for overhead power transmission line - Google Patents

Fault point locating system for overhead power transmission line

Info

Publication number
JPS6416970A
JPS6416970A JP62172866A JP17286687A JPS6416970A JP S6416970 A JPS6416970 A JP S6416970A JP 62172866 A JP62172866 A JP 62172866A JP 17286687 A JP17286687 A JP 17286687A JP S6416970 A JPS6416970 A JP S6416970A
Authority
JP
Japan
Prior art keywords
ground wire
overhead ground
difference
difference current
current
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.)
Pending
Application number
JP62172866A
Other languages
Japanese (ja)
Inventor
Hitoshi Kano
Junichi Minafuji
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.)
Hitachi Cable Ltd
Original Assignee
Hitachi Cable 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 Hitachi Cable Ltd filed Critical Hitachi Cable Ltd
Priority to JP62172866A priority Critical patent/JPS6416970A/en
Publication of JPS6416970A publication Critical patent/JPS6416970A/en
Pending legal-status Critical Current

Links

Landscapes

  • Locating Faults (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

PURPOSE:To obtain a high-accuracy system which handles the single mode of an optical fiber composite overhead ground wire (OPGW), not by finding a difference current after transmitting the outputs of respective current detectors by an optical fiber separately, but finding the difference current previously from the outputs of the respective current detectors. CONSTITUTION:The current detectors CT40 and CT40 detect overhead ground wire (GW) currents which flow through the upstream-side overhead ground wire 8a and downstream-side overhead ground wire 8b of each steel tower and their detection outputs are inputted to an electrooptic (E/O) converting circuit 41 provided on the steel tower to find the difference current between the upstream and downstream sides. The difference current outputted by each circuit 41 by converting those currents into light by an LED is led to a multiplexing transmission device 7 by using the optical fiber 42 in the OPGW, multiplexed, and gathered at a monitor center 50 such as a transformer station. Here, the point where the difference current has a peak is located as a fault point from the distribution of the difference currents in the line direction.
JP62172866A 1987-07-13 1987-07-13 Fault point locating system for overhead power transmission line Pending JPS6416970A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62172866A JPS6416970A (en) 1987-07-13 1987-07-13 Fault point locating system for overhead power transmission line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62172866A JPS6416970A (en) 1987-07-13 1987-07-13 Fault point locating system for overhead power transmission line

Publications (1)

Publication Number Publication Date
JPS6416970A true JPS6416970A (en) 1989-01-20

Family

ID=15949752

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62172866A Pending JPS6416970A (en) 1987-07-13 1987-07-13 Fault point locating system for overhead power transmission line

Country Status (1)

Country Link
JP (1) JPS6416970A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5209135A (en) * 1990-04-23 1993-05-11 Nippon Seiko Kabushiki Kaisha Impact absorbing type steering column device
US5378021A (en) * 1992-03-13 1995-01-03 Nsk Ltd. Collapsible steering column apparatus
US7172103B2 (en) 2001-10-03 2007-02-06 Max Kabushiki Kaisha Fastener magazine of fastening machine
US7530458B2 (en) 2001-09-28 2009-05-12 Max Kabushiki Kaisha Connecting fastener
CN102967800A (en) * 2012-12-10 2013-03-13 辽宁省电力有限公司沈阳供电公司 Method and device for positioning single-phase ground fault section of power distribution network based on transient signal prony algorithm
CN104569741A (en) * 2014-12-31 2015-04-29 国家电网公司 Transmission line fault location method based on optical fiber composite overhead ground wire
CN104655987A (en) * 2015-02-28 2015-05-27 武汉大学 Novel power transmission line lightning stroke point locating method based on OPGW (optical fiber composite overhead ground wire) light polarization state

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5209135A (en) * 1990-04-23 1993-05-11 Nippon Seiko Kabushiki Kaisha Impact absorbing type steering column device
US5378021A (en) * 1992-03-13 1995-01-03 Nsk Ltd. Collapsible steering column apparatus
US7530458B2 (en) 2001-09-28 2009-05-12 Max Kabushiki Kaisha Connecting fastener
US7172103B2 (en) 2001-10-03 2007-02-06 Max Kabushiki Kaisha Fastener magazine of fastening machine
CN102967800A (en) * 2012-12-10 2013-03-13 辽宁省电力有限公司沈阳供电公司 Method and device for positioning single-phase ground fault section of power distribution network based on transient signal prony algorithm
CN104569741A (en) * 2014-12-31 2015-04-29 国家电网公司 Transmission line fault location method based on optical fiber composite overhead ground wire
CN104655987A (en) * 2015-02-28 2015-05-27 武汉大学 Novel power transmission line lightning stroke point locating method based on OPGW (optical fiber composite overhead ground wire) light polarization state

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