CN204373692U - A kind of electric aerial optical cable temperature and Strain Distribution formula monitoring device - Google Patents
A kind of electric aerial optical cable temperature and Strain Distribution formula monitoring device Download PDFInfo
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- CN204373692U CN204373692U CN201520045024.9U CN201520045024U CN204373692U CN 204373692 U CN204373692 U CN 204373692U CN 201520045024 U CN201520045024 U CN 201520045024U CN 204373692 U CN204373692 U CN 204373692U
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Abstract
The utility model relate to a kind of for electric aerial optical cable temperature and Strain Distribution formula monitoring device, comprise Test Host, aerial optical cable, fiber optic closure, two light unit are provided with in aerial optical cable, wherein the first smooth unit is positioned at optical cable center, one is had at least not have remaining long tight tube fiber, second smooth unit is positioned at optical cable stranded layer, more than one length is had at least to be the loose tube fiber of 0.5-0.8%, tight tube fiber is connected with two optical ports of Test Host respectively with one end of loose tube fiber, tight tube fiber is connected after entering fiber optic closure respectively with the other end of loose tube fiber.Tight tube fiber and loose tube fiber are respectively used to distributed strain and temperature survey, thus realize the distributed Real-Time Monitoring of power overhead network, ensure electric power delivery safety.
Description
Technical field
The utility model relates to overhead transmission line monitoring field, especially relates to a kind of electric aerial optical cable temperature and Strain Distribution formula monitoring device.
Background technology
Overhead transmission line is the important step realizing electric energy long-distance transmissions in electric system, is the artery of electric system.Traditional overhead transmission line inspection mainly relies on operation maintenance personnel periodically to make an inspection tour, and there is a lot of limitation such as poor real, monitoring range be limited.Electric aerial optical cable is a kind of special overhead transmission line, and mainly contain the heavy optical cable ADSS of dielectric, self-supporting, OPGW optical and optical phase conductor OPPC, especially OPGW and OPPC is the main carriers of power communication, scheduling, is widely used.Strengthen electric aerial optical cable on-line monitoring significant.
In recent years, propose both at home and abroad and optical sensor system is used for electric aerial optical cable circuit on-line monitoring field, realize the parameter measurements such as optical cable temperature, strain.Chinese patent CN 201569523 U " a kind of stress-strain measurement device being applied to OPPC OPPC ", form by based on the distribution type fiber-optic system BOTDR of Brillouin scattering, supervisory control comuter, conduction optical fiber and connector box thereof and OPPC OPPC, can complete and OPPC ess-strain abnormity point is monitored.Chinese patent CN 203163769 U " a kind of overhead transmission line safety monitoring system based on distributed fiberoptic sensor ", be made up of pole line stress sensing device, pole line temperature sensing device and pole line environment monitoring device, its pole line stress sensing device is based on distribution type fiber-optic Brillouin time domain optical time domain reflection (BOTDR) sensing principle, pole line temperature sensing device, based on distributed fiber Raman thermometric (ROTDR) sensing principle, realizes carrying out real-time online distributed monitoring to the temperature of whole piece overhead transmission line.Chinese patent CN 102840928 A " a kind of on-line temperature monitoring system for OPPC and monitoring method thereof " and Chinese patent CN 203310540 U " a kind of temperature and strain on-Line Monitor Device merging OPPC ", propose to utilize multimode optical fiber to carry out real time partitioned monitoring to the OPPC optical cable temperature run, measuring distance is no more than 20km, can not realize the omnidistance real-time continuous monitoring of long distance OPPC.United States Patent (USP) grant number US7412117 (PCT/GB2004/004383) Apparatus and method for distributed temperaturesensing, do not consider OPPC complex circuit heat transfer feature, do not consider the property of aerial optical cable multipoint connection.
The above-mentioned several patents mentioned all adopt BOTDR technology in OPPC stress monitoring, but the OPPC OPPC for testing is conventional structure, its structure (comprising light unit) principle of design is all that the optical fiber in cable is isolated as much as possible with external temperature, strain (especially straining), to ensure light signal not by external action ground transmitting.Therefore, for conventional electric power aerial optical cable, optical fiber has redundant length (excess fiber length) relative to light unit, namely optical fiber is lax in light unit, light unit is positioned at stranded layer in addition, and this time unit also exists certain stranded remaining length, when strain occurs electric aerial optical cable within the specific limits compared to optical cable, optical fiber in cable does not strain, and therefore it haves much room for improvement in the accuracy of OPPC stress monitoring.
Summary of the invention
Technical problem to be solved in the utility model, by providing a kind of electric aerial optical cable temperature and Strain Distribution formula monitoring device, effectively can utilize aerial optical cable built-in redundancy optical fiber, realize distributed temperature and strain measurement.
The utility model solves the problems of the technologies described above adopted technical scheme: a kind of electric aerial optical cable temperature and Strain Distribution formula monitoring device, it is characterized in that: comprise Test Host, aerial optical cable, fiber optic closure, the first smooth unit and the second smooth unit is provided with in described aerial optical cable, described first smooth unit is positioned at the central core of aerial optical cable, described second smooth unit is positioned at the stranded layer of aerial optical cable, described first smooth unit port is connected with the first optical port of described Test Host, the fiber optic closure described in the introducing of another port of the described first smooth unit is inner, described second smooth unit port is connected with the second optical port of described Test Host, the fiber optic closure described in the introducing of another port of the described second smooth unit is inner, another port of described first smooth unit is connected in described fiber optic closure inside with another port of the described second smooth unit.
In the utility model one embodiment, built-in at least one of the described first smooth unit does not have remaining long tight tube fiber, and the described second smooth unit is built-in with the loose tube fiber that more than at least one length is 0.5-0.8%.
In the utility model one embodiment, described Test Host has two optical ports, first optical port has transmission continuous laser semiotic function, second optical port is for sending pulsed laser signal, have the brillouin frequency spectrum signal function receiving feedback, described Test Host demodulates fiber optic temperature, strain value after the second optical port receives feedback signal simultaneously.
In the utility model one embodiment, described fiber optic closure has fused fiber splice protection, coiling excess fiber function.
Compared with prior art, the utility model has the advantage of and utilize electric aerial optical cable internal optical fiber to realize the temperature of overhead transmission line and Strain Distribution formula is measured in real time, by conjunction with existing software, achieving without measuring blind area, without the need to extra placement sensor, construct simply, be easy to realize; And the accuracy of measuring of this monitoring method and precision high, achieve length and be not more than the omnidistance Real-Time Monitoring of 75km transmission line of electricity, line length sampling interval reaches 0.1 ~ 1m; Measure one group of temperature and strain data every 20S, temperature accuracy reaches ± 1 ° of C, and temperature resolution is 0.1 ° of C; Strain precision reaches ± 20me, and strain resolution is 20me.This monitoring method improves the level monitoring of electric aerial optical cable effectively, ensures electric power delivery safety.
Accompanying drawing explanation
Fig. 1 is a kind of electric aerial optical cable temperature and Strain Distribution formula monitoring device schematic diagram in the utility model.
Fig. 2 is the cross sectional representation of the electric aerial optical cable of built-in two light unit in the utility model.
Embodiment
Below in conjunction with accompanying drawing embodiment, the utility model is described in further detail.
Fig. 1 is the schematic diagram in the utility model, comprising: Test Host 1, aerial optical cable 2, fiber optic closure 3.Test Host 1 has the first optical port 11, second optical port 12 totally two optical ports, the distributed temperature and the strain monitoring that reach dozens of kilometres can be realized, first optical port has transmission continuous laser semiotic function, second port is for sending pulsed laser signal, have the brillouin frequency spectrum signal function receiving feedback, described Test Host demodulates fiber optic temperature, strain value after the second optical port receives feedback signal simultaneously.In the present embodiment, aerial optical cable 2 is optical phase conductor OPPC, have delivery of electrical energy and power communication function concurrently, aerial optical cable 2 is built-in with the first smooth unit 21, second smooth unit 22 totally two light unit, first smooth unit, 21 1 ports are connected with the first optical port 11 of Test Host 11, another port of first smooth unit 21 introduces fiber optic closure 3 inside, second smooth unit, 22 1 ports are connected with the second optical port 12 of Test Host 1, another port of second smooth unit introduces fiber optic closure 3 inside, be connected with second another port of smooth unit at first another port of smooth unit of fiber optic closure 3 inside, form optical fiber measurement loop.Fiber optic closure 3 is conventional outdoor version, the optical fiber in optical phase conductor through photodetachment laggard enter in fiber optic closure 3, can optical fiber fusion welding point be protected, coiling storage excess fiber.In the present embodiment, Test Host 1 can adopt Brillouin's type optical time-domain analyzer.
The cross sectional representation of the electric aerial optical cable of built-in two light unit as shown in Figure 2, comprise the smooth unit 22 of the first smooth unit 21, second, aluminum steel 23, aluminum cald steel wire line 24, first smooth unit 21 is positioned at the central core of electric aerial optical cable 2, built-in at least one of first smooth unit 21 does not have remaining long tight tube fiber 211, second smooth unit 22 is positioned at the stranded layer of electric aerial optical cable 2, and the second smooth unit 22 is built-in with the loose tube fiber 221 that more than at least one length is 0.5-0.8%.
In the present embodiment, the remaining length of loose tube fiber 221 is larger, and it is relevant with the temperature of overhead transmission line, and namely its brillouin frequency spectrum information only reacts the temperature information of overhead transmission line; And tight tube fiber 211 does not have remaining length, and do not exist stranded remaining long, tight tube fiber 211 is simultaneously relevant with strain with the temperature of overhead transmission line.In conjunction with the brillouin frequency spectrum information (only relevant with temperature) of loose tube fiber 221, the brillouin frequency spectrum information of the strained impact of tight tube fiber 211 can be isolated, thus realize temperature and the monitoring of Strain Distribution formula of power overhead network.Temperature and strain real-time measured information and the long-term operating history data of power overhead network, the health status of overhead transmission line can be reflected, the local hot spot of Timeliness coverage overhead transmission line or the fault such as icing, disconnected stock, improve the level monitoring of overhead transmission line electric power transfer process, ensure electric power delivery safety.
Be more than preferred embodiment of the present utility model, all changes done according to technical solutions of the utility model, when the function produced does not exceed the scope of technical solutions of the utility model, all belong to protection domain of the present utility model.
Claims (4)
1. an electric aerial optical cable temperature and Strain Distribution formula monitoring device, it is characterized in that: comprise Test Host, aerial optical cable, fiber optic closure, the first smooth unit and the second smooth unit is provided with in described aerial optical cable, described first smooth unit is positioned at the central core of aerial optical cable, described second smooth unit is positioned at the stranded layer of aerial optical cable, described first smooth unit port is connected with the first optical port of described Test Host, the fiber optic closure described in the introducing of another port of the described first smooth unit is inner, described second smooth unit port is connected with the second optical port of described Test Host, the fiber optic closure described in the introducing of another port of the described second smooth unit is inner, another port of described first smooth unit is connected in described fiber optic closure inside with another port of the described second smooth unit.
2. a kind of electric aerial optical cable temperature as claimed in claim 1 and Strain Distribution formula monitoring device, it is characterized in that: built-in at least one of the described first smooth unit does not have remaining long tight tube fiber, the described second smooth unit is built-in with the loose tube fiber that more than at least one length is 0.5-0.8%.
3. a kind of electric aerial optical cable temperature as claimed in claim 1 and Strain Distribution formula monitoring device, is characterized in that: described Test Host has two optical ports; First optical port is for sending continuous laser signal; Second optical port, for sending pulsed laser signal, receives the brillouin frequency spectrum signal of feedback simultaneously; Described Test Host demodulates fiber optic temperature, strain value after the second optical port receives feedback signal.
4. a kind of electric aerial optical cable temperature as claimed in claim 1 and Strain Distribution formula monitoring device, is characterized in that described fiber optic closure has fused fiber splice protection, coiling excess fiber function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520045024.9U CN204373692U (en) | 2015-01-22 | 2015-01-22 | A kind of electric aerial optical cable temperature and Strain Distribution formula monitoring device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520045024.9U CN204373692U (en) | 2015-01-22 | 2015-01-22 | A kind of electric aerial optical cable temperature and Strain Distribution formula monitoring device |
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| CN204373692U true CN204373692U (en) | 2015-06-03 |
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| CN201520045024.9U Expired - Fee Related CN204373692U (en) | 2015-01-22 | 2015-01-22 | A kind of electric aerial optical cable temperature and Strain Distribution formula monitoring device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104634388A (en) * | 2015-01-22 | 2015-05-20 | 国家电网公司 | Temperature and strain distributed monitoring device of power aerial optical cable |
| CN105865497A (en) * | 2016-06-08 | 2016-08-17 | 无锡亚天光电科技有限公司 | Method for using communication optical fiber as distributive sensor |
-
2015
- 2015-01-22 CN CN201520045024.9U patent/CN204373692U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104634388A (en) * | 2015-01-22 | 2015-05-20 | 国家电网公司 | Temperature and strain distributed monitoring device of power aerial optical cable |
| CN105865497A (en) * | 2016-06-08 | 2016-08-17 | 无锡亚天光电科技有限公司 | Method for using communication optical fiber as distributive sensor |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150603 Termination date: 20220122 |
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| CF01 | Termination of patent right due to non-payment of annual fee |