JPS6416970A - Fault point locating system for overhead power transmission line - Google Patents
Fault point locating system for overhead power transmission lineInfo
- 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
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.
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)
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 |
-
1987
- 1987-07-13 JP JP62172866A patent/JPS6416970A/en active Pending
Cited By (7)
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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