CN103632510A - Pre-warning system for preventing high-voltage underground long-distance-transmission power cable from being damaged by external force - Google Patents
Pre-warning system for preventing high-voltage underground long-distance-transmission power cable from being damaged by external force Download PDFInfo
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- CN103632510A CN103632510A CN201310645792.3A CN201310645792A CN103632510A CN 103632510 A CN103632510 A CN 103632510A CN 201310645792 A CN201310645792 A CN 201310645792A CN 103632510 A CN103632510 A CN 103632510A
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Abstract
一种高压地埋长输电力电缆防外力破坏的预警系统，在地下输电缆每隔一段距离敷设一个光纤光栅，将所有敷设的光纤光栅采用单模光纤从头依次串联起来，在单模光纤初始端连接环形器，环形器连接宽带光源，环形器连接还连接波长解调器，波长解调器连接数字化器，数字化器连接计算机。本发明有益效果本高压地埋长输电力电缆防外力破坏的预警系统结构简单，易于施工铺设，不受电场影响。测量监测定位精度准确。
An early warning system for high-voltage buried long-distance power transmission cables to prevent external force damage. A fiber grating is laid at intervals in the underground transmission cable, and all the laid fiber gratings are connected in series with single-mode fibers from the beginning. At the initial end of the single-mode fiber The circulator is connected, the circulator is connected with the broadband light source, the circulator is connected with the wavelength demodulator, the wavelength demodulator is connected with the digitizer, and the digitizer is connected with the computer. Beneficial Effects of the Invention The early warning system for high-voltage buried long-distance transmission power cables has a simple structure, is easy to construct and lay, and is not affected by electric fields. The measurement, monitoring and positioning accuracy is accurate.
Description
Technical field
The invention belongs to sensing technology and measure monitoring field, relate in particular to the early warning system of the anti-outside destroy of a kind of high-voltage underground long-distance power supply cable.
Background technology
Although high-voltage underground long-distance power supply cable has been saved ground resource, the outside destroy being also easily subject to, as: machinery digs wound, manpower digs wound, shield structure, near water pipe explosion etc.; Also the event that has artificial pilferage power cable, these have all had a strong impact on the normally stably operation of underground electric power transmission cable, affected users' at different levels normal electricity consumption, also affected the safety of surrounding area people's life and property, underground power cable is underground owing to being embedded in, and finds that looking up the fault point is difficult, maintenance time is long, maintenance is difficult, coverage is large.In order to monitor the early warning of the anti-outside destroy of high-voltage underground long-distance power supply cable, at present existing patented technology (200920251708.9) is although the real-time security monitoring device of high-voltage underground long-distance power supply cable can reach the safe early warning object of the anti-outside destroy of underground power cable, but this installation cost is high, be difficult for applying, and have also inaccurate shortcoming of the Monitoring and Positioning of measurement precision.
Summary of the invention
The early warning system that the object of this invention is to provide the anti-outside destroy of a kind of high-voltage underground long-distance power supply cable, the real-time security monitoring device cost that overcomes patented technology (200920251708.9) high-voltage underground long-distance power supply cable is high, be difficult for applying, and have also inaccurate shortcoming of the Monitoring and Positioning of measurement precision.Reach system simple, be easy to construction and lay, be not subject to electric field influence.Measure Monitoring and Positioning precision accurate.
Particular content of the present invention
The early warning system of the anti-outside destroy of a kind of high-voltage underground long-distance power supply cable, it is characterized in that: at underground transmission cable, every a segment distance, lay a fiber grating, adopt single-mode fiber to be from the beginning together in series successively all fiber gratings that lay, in single-mode fiber initial end, connect circulator, circulator connects wideband light source, circulator connects and also connects wavelengt demodulator, and wavelengt demodulator connects Aristogrid, and Aristogrid connects computing machine.
Beneficial effect of the present invention
The early warning system of the anti-outside destroy of this high-voltage underground long-distance power supply cable is simple in structure, is easy to construction and lays, and is not subject to electric field influence.Measure Monitoring and Positioning precision accurate.
Accompanying drawing explanation
Fig. 1 is the early warning system figure of the anti-outside destroy of high-voltage underground long-distance power supply cable.
In figure, 1 is wideband light source; 2 is circulator; 3 is fiber grating; 4 is single-mode fiber; 5 is underground cable; 6 is wavelengt demodulator; 7 is Aristogrid; 8 is computing machine.
Embodiment
The early warning system of the anti-outside destroy of a kind of high-voltage underground long-distance power supply cable as shown in the figure, at underground transmission cable, every a segment distance, lay a fiber grating, adopt single-mode fiber to be from the beginning together in series successively all fiber gratings that lay, in single-mode fiber initial end, connect circulator, circulator connects wideband light source, circulator connects and also connects wavelengt demodulator, and wavelengt demodulator connects Aristogrid, and Aristogrid connects computing machine.
Wherein, article one, single-mode fiber 4, surrounding layer is without steel armour teflon stranding, according to 5 length of underground cable, at the ad-hoc location (as 50 meters, interval) of single-mode fiber, locate to be processed into grating 3 in advance, the single mode fiber cable of the fiber grating processing 34 and feeder cable are laid with ditch, 20 centimetres of both distances, optical fiber one end is connected with circulator 2, circulator 2 one end and wideband light source 1, the other end is connected with wavelengt demodulator 6, and wavelengt demodulator is connected with Aristogrid 7, and Aristogrid 7 joins with computing machine 8.
The present invention is like this work: according to formula: Δ λ
b=k
εε
zλ
bwith Δ λ
b=k
tΔ T λ
bhere coefficient of strain ε
zwith temperature coefficient k
ttitle can be associated with a lot of physical quantitys, as temperature,
Vibrations etc., that is to say and can realize the measurement to temperature, strain, vibration physical quantity by designing the device of various engineering properties.Wideband light source is constantly launched the light wave of 1550-1650nm to optical fiber by circulator, when joint temperature variation at underground transmission cable, with excited vibration, there is the variation with pm level in the wavelength of its reflection, the reflecting light wavelength changing that wavelengt demodulator fast demodulation receives by circulator is with the variation of pm level, and change into digitizing wavelength with pm level value by what be connected Aristogrid with wavelengt demodulator, output to computing machine, by Computer, being calculated the vibration values of each optical grating point composes and shows, and compose threshold value comparison with alarm, send normal, early warning signal.Reach the object of the early warning of the anti-outside destroy of high-voltage underground long-distance power supply cable.
The present invention is such principle of work and the course of work:
According to formula: Δ λ
b=k
εε
zλ
bwith Δ λ
==k
tΔ T λ
b
Here coefficient of strain ε
zwith temperature coefficient k
ttitle can be associated with a lot of physical quantitys, as temperature, vibration etc., that is to say and can realize the measurement to temperature, strain, vibration physical quantity by designing the device of various engineering properties.Wideband light source is constantly launched the light wave of 1550-1650nm to optical fiber by circulator, when joint temperature variation at underground transmission cable, with excited vibration, there is the variation with pm level in the wavelength of its reflection, the reflecting light wavelength changing that wavelengt demodulator fast demodulation receives by circulator is with the variation of pm level, and change into digitizing wavelength with pm level value by what be connected Aristogrid with wavelengt demodulator, output to computing machine, by Computer, being calculated the vibration values of each optical grating point composes and shows, and compose threshold value comparison with alarm, send normal, early warning signal.Reach the object of the early warning of the anti-outside destroy of high-voltage underground long-distance power supply cable.
Claims (1)
1. the early warning system of the anti-outside destroy of high-voltage underground long-distance power supply cable, it is characterized in that: at underground transmission cable, every a segment distance, lay a fiber grating, adopt single-mode fiber to be from the beginning together in series successively all fiber gratings that lay, in single-mode fiber initial end, connect circulator, circulator connects wideband light source, circulator connects and also connects wavelengt demodulator, and wavelengt demodulator connects Aristogrid, and Aristogrid connects computing machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310645792.3A CN103632510A (en) | 2013-12-04 | 2013-12-04 | Pre-warning system for preventing high-voltage underground long-distance-transmission power cable from being damaged by external force |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310645792.3A CN103632510A (en) | 2013-12-04 | 2013-12-04 | Pre-warning system for preventing high-voltage underground long-distance-transmission power cable from being damaged by external force |
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| CN103632510A true CN103632510A (en) | 2014-03-12 |
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| CN201310645792.3A Pending CN103632510A (en) | 2013-12-04 | 2013-12-04 | Pre-warning system for preventing high-voltage underground long-distance-transmission power cable from being damaged by external force |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630264A (en) * | 2013-12-04 | 2014-03-12 | 国家电网公司 | Underground power transmission cable connector temperature real-time online measurement system |
| CN104964707A (en) * | 2015-01-14 | 2015-10-07 | 四川安普光控科技有限公司 | All-fiber sensing integrated monitoring system applied to electric power tunnels |
| CN105528854A (en) * | 2014-09-30 | 2016-04-27 | 国家电网公司 | External force damage prevention system for power cable |
| CN111780855A (en) * | 2020-05-26 | 2020-10-16 | 山东大学 | Method and system for preventing external breakage of cables based on optical fiber radial vibration source ranging and vibration identification |
| CN113295355A (en) * | 2021-04-15 | 2021-08-24 | 广西电网有限责任公司南宁供电局 | Ground cable channel monitoring device with abnormal vibration early warning function |
| CN113437796A (en) * | 2021-05-24 | 2021-09-24 | 国网河北省电力有限公司涉县供电分公司 | Intelligent early warning cable system |
| CN113936438A (en) * | 2021-10-12 | 2022-01-14 | 国家电网有限公司 | Monitoring and early warning device for underground cable operating environment |
| CN115877126A (en) * | 2022-11-30 | 2023-03-31 | 广东电网有限责任公司 | An underground cable risk early warning system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0052193A1 (en) * | 1980-11-14 | 1982-05-26 | International Business Machines Corporation | Security arrangement against theft or tampering of electrical apparatus |
| CN1236234A (en) * | 1999-04-30 | 1999-11-24 | 诺斯坎仪器有限公司 | Fiber optic cable monitoring system |
| CN101566586A (en) * | 2008-04-22 | 2009-10-28 | 宁波诺可电子科技发展有限公司 | External safety early-warning and positioning system of optical cable and optical-electrical compound cable |
| CN201662859U (en) * | 2010-05-04 | 2010-12-01 | 武巍 | Light-guide fiber monitoring and alarming system for cable fault, stealing and pipeline damage |
| CN101916492A (en) * | 2010-08-10 | 2010-12-15 | 卢军翔 | Optical fiber intelligent sensor used in security system |
| CN203165121U (en) * | 2013-01-29 | 2013-08-28 | 广州供电局有限公司 | Power cable anti-damage monitoring system |
-
2013
- 2013-12-04 CN CN201310645792.3A patent/CN103632510A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0052193A1 (en) * | 1980-11-14 | 1982-05-26 | International Business Machines Corporation | Security arrangement against theft or tampering of electrical apparatus |
| CN1236234A (en) * | 1999-04-30 | 1999-11-24 | 诺斯坎仪器有限公司 | Fiber optic cable monitoring system |
| CN101566586A (en) * | 2008-04-22 | 2009-10-28 | 宁波诺可电子科技发展有限公司 | External safety early-warning and positioning system of optical cable and optical-electrical compound cable |
| CN201662859U (en) * | 2010-05-04 | 2010-12-01 | 武巍 | Light-guide fiber monitoring and alarming system for cable fault, stealing and pipeline damage |
| CN101916492A (en) * | 2010-08-10 | 2010-12-15 | 卢军翔 | Optical fiber intelligent sensor used in security system |
| CN203165121U (en) * | 2013-01-29 | 2013-08-28 | 广州供电局有限公司 | Power cable anti-damage monitoring system |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630264A (en) * | 2013-12-04 | 2014-03-12 | 国家电网公司 | Underground power transmission cable connector temperature real-time online measurement system |
| CN105528854A (en) * | 2014-09-30 | 2016-04-27 | 国家电网公司 | External force damage prevention system for power cable |
| CN104964707A (en) * | 2015-01-14 | 2015-10-07 | 四川安普光控科技有限公司 | All-fiber sensing integrated monitoring system applied to electric power tunnels |
| CN111780855A (en) * | 2020-05-26 | 2020-10-16 | 山东大学 | Method and system for preventing external breakage of cables based on optical fiber radial vibration source ranging and vibration identification |
| CN113295355A (en) * | 2021-04-15 | 2021-08-24 | 广西电网有限责任公司南宁供电局 | Ground cable channel monitoring device with abnormal vibration early warning function |
| CN113437796A (en) * | 2021-05-24 | 2021-09-24 | 国网河北省电力有限公司涉县供电分公司 | Intelligent early warning cable system |
| CN113936438A (en) * | 2021-10-12 | 2022-01-14 | 国家电网有限公司 | Monitoring and early warning device for underground cable operating environment |
| CN115877126A (en) * | 2022-11-30 | 2023-03-31 | 广东电网有限责任公司 | An underground cable risk early warning system |
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Application publication date: 20140312 |