CN206932067U - A kind of transmission line of electricity provided with distributed fiberoptic sensor - Google Patents
A kind of transmission line of electricity provided with distributed fiberoptic sensor Download PDFInfo
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- CN206932067U CN206932067U CN201720836487.6U CN201720836487U CN206932067U CN 206932067 U CN206932067 U CN 206932067U CN 201720836487 U CN201720836487 U CN 201720836487U CN 206932067 U CN206932067 U CN 206932067U
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Abstract
Electric power monitoring technical field is the utility model is related to, specifically a kind of transmission line of electricity provided with distributed fiberoptic sensor, it is characterised in that：The input of the output end connection polarizing coupler of laser, the output end of polarizing coupler divides the input of the input that two-way connects the first electrooptic modulator respectively and the second electrooptic modulator, the output end of first electrooptic modulator is sequentially connected the first port of the first image intensifer, circulator, the second port of circulator connects one end of any one optical fiber, and the other end of optical fiber connects the output end of the second electrooptic modulator；3rd port of circulator is sequentially connected the input of the second image intensifer, wave filter, detector, and the output end of detector is sequentially connected processor, main frame, and optical fiber is OPGW or OPPC.The utility model is used as sensor using OPGW/OPPC circuits, you can obtains for judging whether circuit destroys changing for stranded etc. optical signal by mountain fire, icing, ice-melt and external force.
Description
Technical field
Electric power monitoring technical field is the utility model is related to, it is specifically a kind of defeated provided with distributed fiberoptic sensor
Electric line.
Background technology
In transmission line of electricity, OPGW (OPGW) and optical phase conductor (OPPC) are with higher
The distinguishing features such as reliability, superior mechanical performance, cost be relatively low, the optical cable in OPGW/OPPC are used as communication, and anti-electromagnetism is done
Disturb, be not easy by artificial destruction, the advantage such as service life is long, operation and maintenance cost is low, communication of power system is done in China in recent years
It is widely applied in transmission network.But OPGW/OPPC is in the presence of a harsh environment, easily by mountain fire, icing, ice-melt and
External force, which destroys stranded wait, to be influenceed, once ground wire function or optical fiber communication function are lost, it will jeopardize the safe and stable operation of power network.
Therefore, monitoring in real time comprehensive to the progress of OPGW/OPPC running statuses, find in time, exclusion hidden danger is particularly important.
Current transmission line of electricity monitoring means, such as monitor the heat detector of mountain fire, monitor the/pull sensing of weighing of icing
Device, the electronic temperature transmitter for monitoring ice-melt and monitoring external force destroy stranded crusing robot etc., and these methods are all present
Many deficiencies, and most of is that single parameter is measured, but generally require to measure in many practical applications whole
Mountain fire, icing, ice-melt and the external force of individual transmission line of electricity or line corridor destroy the parameter distribution information of the multidimensional problem such as stranded.
Utility model content
The purpose of this utility model is overcome the deficiencies in the prior art, using Distributed Optical Fiber Sensing Techniques, with OPGW or
Optical fiber in OPPC obtains the associated change parameter of light in a fiber, consequently facilitating realizing to mountain fire, covering as sensing media
Ice, ice-melt and external force destroy stranded etc. on-line monitoring, realize that transmission line of electricity many reference amounts monitor all standing.
To achieve the above object, a kind of transmission line of electricity provided with distributed fiberoptic sensor, including distribution type fiber-optic are designed
Sensor, it is characterised in that：
Described distributed fiberoptic sensor include laser, polarizing coupler, first, second electrooptic modulator, first,
Second image intensifer, circulator, wave filter, detector, mountain fire signal processor, icing signal processor, ice-melt signal transacting
Device, external force destroy stranded signal processor and the main frame provided with display；
The input of the output end connection polarizing coupler of described laser, the output end of polarizing coupler divide two-way point
Do not connect the input of the first electrooptic modulator and the input of the second electrooptic modulator, the output end of the first electrooptic modulator according to
The first image intensifer of secondary connection, the first port of circulator, the second port of circulator connect one end of any one optical fiber, together
The other end of a piece optical fiber connects the output end of the second electrooptic modulator；3rd port of circulator is sequentially connected the second light amplification
Device, wave filter, the input of detector, four tunnels of output end point of detector connect mountain fire signal processor, icing signal respectively
Processor, ice-melt signal processor, external force destroy the input of stranded signal processor, mountain fire signal processor, icing signal
Processor, ice-melt signal processor, external force destroy the output end connection main frame of stranded signal processor；
Described optical fiber is OPGW optical fiber or OPPC optical fiber.
Described laser is narrow linewidth laser, line width ＜ 5kHz, 50~200mW of power.
Described wave filter bandpass filter, isolation are more than 60dB.
Described detector uses APD detectors.
It is of the present utility model compared with prior art, it is simple in construction, with an OPGW/OPPC circuits wherein core spare fibre phase
Even, sensor is used as using the core fibre, it is not necessary to which additional sensors are installed on the line, you can facilitate acquisition to be subsequently used for handling
Judge whether OPGW/OPPC circuits destroy changing for stranded etc. optical signal by mountain fire, icing, ice-melt and external force；Compared to existing
The monitoring acquisition modes of some point type electronic sensors, the present apparatus is more difficult to be influenceed by outside environmental elements, and data are accurate
True property is more preferable.
Brief description of the drawings
Fig. 1 is connection diagram of the present utility model.
Embodiment
In conjunction with drawings and Examples, the utility model is further described.
Embodiment 1
Referring to Fig. 1, a kind of transmission line of electricity provided with distributed fiberoptic sensor of the utility model, including distribution type fiber-optic pass
Sensor, it is characterised in that：
Described distributed fiberoptic sensor include laser, polarizing coupler, first, second electrooptic modulator, first,
Second image intensifer, circulator 1, wave filter, detector, mountain fire signal processor, icing signal processor, ice-melt signal transacting
Device, external force destroy stranded signal processor and the main frame provided with display；
The input of the output end connection polarizing coupler of described laser, the output end of polarizing coupler divide two-way point
Do not connect the input of the first electrooptic modulator and the input of the second electrooptic modulator, the output end of the first electrooptic modulator according to
The first image intensifer of secondary connection, the first port of circulator 1, the second port of circulator 1 connect one end of any one optical fiber,
The other end of same root optical fiber connects the output end of the second electrooptic modulator；3rd port of circulator 1 is sequentially connected the second light
Amplifier, wave filter, the input of detector, four tunnels of output end point of detector connect mountain fire signal processor, icing respectively
Signal processor, ice-melt signal processor, external force destroy the input of stranded signal processor, mountain fire signal processor, icing
Signal processor, ice-melt signal processor, external force destroy the output end connection main frame of stranded signal processor；
In the utility model, described laser is used to send continuous light, and described polarizing coupler splits the light into two
Road signal exports to first, second electrooptic modulator respectively, wherein the first electrooptic modulator optical signal modulation into pump light, this
The pulse width of pump light is generally 20~60ns in example, and the second electrooptic modulator is optical signal modulation into continuous light；Pump light
Enter circulator 1 by the first image intensifer, then enter from any one OPGW optical fiber or OPPC optical fiber, the upstream end is
Optical fiber initial end, pump light constantly produces back-scattering light in optical fiber, and continuous light enters shape from the end of same root optical fiber
Into detection light, pump light and detection light meet in a fiber, when the frequency difference of pump light and continuous detection light and scattering optical frequency shift
When equal, light scattering enlarge-effect will be produced in the region, energy transfer occurs between two-beam, realizes backscatter signals
Enhancing；The signal of the enhancing exports from the initial end of optical fiber, enters the second image intensifer by the 3rd port of circulator 1,
Then filtered device enters detector, and last signal is sent into mountain fire signal processor, icing signal processor, ice-melt signal transacting
Device and external force destroy stranded signal processor, are ultimately routed on main frame, and the display by being connected on main frame is shown
Come.
Further, described laser is narrow linewidth laser, line width ＜ 5kHz, 50~200mW of power.
Further, described wave filter bandpass filter, isolation are more than 60dB.
Further, described detector uses APD detectors.
Mountain fire signal processor, icing signal processor, ice-melt signal processor and external force are destroyed disconnected in the utility model
The main function of stock signal processor is to obtain the spectral characteristic of input signal, and its energy measurement signal distortion factor, percentage modulation spectrum are pure
Degree, the data received by main frame, and these data and the expression being previously set are in mountain fire, icing, ice-melt or external force
Threshold range when destroying stranded is compared, so as to judge which kind of state optical fiber is in instantly.The principle of its foundation is as follows：
Being monitored for mountain fire, the intensity of the back-scattering light in optical fiber has been modulated in the temperature field of spatial points residing for optical fiber,
The thermal expansion effects in optical fiber can be triggered when the temperature on optical fiber changes, so that density of optic fibre and optical fibre refractivity hair
Changing, and then cause the change of scattering optical frequency shift.Referring to《Cable temperature monitoring based on BOTDA technologies》Shanghai maritime affairs are big
Learn, Zhong Lina et al..
Monitored for icing, icing can make optical cable elongation cause sag to increase, and cause the change of fibre strain.Therefore, may be used
By monitoring fibre strain, to realize early warning and alarm to icing.Fibre strain can cause to scatter the change of optical frequency shift, pass through
The light intensity of each scattering light is detected, can be to know the icing information along optical fiber.Referring to paper《ADSS optical cables based on BOTDA
Study on Monitoring Technology》North China Electric Power University, Li Yongqian etc.；And《BOTDA technologies answering in power network heavy icing area on-line monitoring
With》Zhaotong power supply administration of Yunnan Power System Co., Ltd, Xiong Wen are virtuous etc..And the principle of ice-melt is basically identical with icing principle, only
But icing is the process of icing thickness increase, and ice-melt is the process reduced.
Stranded monitoring, the stranded missing that can cause scattered light signal are destroyed for external force, system will be collected backwards to auspicious
Time, differentiation in different regions and the optical power change situation that sharp scattered signal reaches according to it are sampled collection, and then determine stranded
Position.Referring to paper《High voltage electricity transmission conductive wire based on OTDR technique is stranded and damage check》, Shanghai Electric Power Co electric power
Research institute.
Claims (4)
1. a kind of transmission line of electricity provided with distributed fiberoptic sensor, including distributed fiberoptic sensor, it is characterised in that：
Described distributed fiberoptic sensor includes laser, polarizing coupler, first, second electrooptic modulator, first, second
Image intensifer, circulator (1), wave filter, detector, mountain fire signal processor, icing signal processor, ice-melt signal transacting
Device, external force destroy stranded signal processor and the main frame provided with display；
The input of the output end connection polarizing coupler of described laser, the output end of polarizing coupler divide two-way to connect respectively
The input of the first electrooptic modulator and the input of the second electrooptic modulator are connect, the output end of the first electrooptic modulator connects successively
The first port of the first image intensifer, circulator is connect, the second port of circulator connects one end of any one optical fiber, same root
The other end of optical fiber connects the output end of the second electrooptic modulator；3rd port of circulator be sequentially connected the second image intensifer,
The input of wave filter, detector, four tunnels of output end point of detector connect mountain fire signal processor, icing signal transacting respectively
Device, ice-melt signal processor, external force destroy the input of stranded signal processor, mountain fire signal processor, icing signal transacting
Device, ice-melt signal processor, external force destroy the output end connection main frame of stranded signal processor；
Described optical fiber is OPGW optical fiber or OPPC optical fiber.
A kind of 2. transmission line of electricity provided with distributed fiberoptic sensor as claimed in claim 1, it is characterised in that：Described swashs
Light device is narrow linewidth laser, line width ＜ 5kHz, 50~200mW of power.
A kind of 3. transmission line of electricity provided with distributed fiberoptic sensor as claimed in claim 1, it is characterised in that：Described filter
Ripple device bandpass filter, isolation are more than 60dB.
A kind of 4. transmission line of electricity provided with distributed fiberoptic sensor as claimed in claim 1, it is characterised in that：Described spy
Survey device and use APD detectors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720836487.6U CN206932067U (en) | 2017-07-11 | 2017-07-11 | A kind of transmission line of electricity provided with distributed fiberoptic sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720836487.6U CN206932067U (en) | 2017-07-11 | 2017-07-11 | A kind of transmission line of electricity provided with distributed fiberoptic sensor |
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| CN206932067U true CN206932067U (en) | 2018-01-26 |
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| CN201720836487.6U Expired - Fee Related CN206932067U (en) | 2017-07-11 | 2017-07-11 | A kind of transmission line of electricity provided with distributed fiberoptic sensor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108957209A (en) * | 2018-08-01 | 2018-12-07 | 四川特旺通信科技有限公司 | A kind of broken string automatic detection device of telecommunication optical fiber optical cable production |
| CN109141487A (en) * | 2018-07-25 | 2019-01-04 | 国网河北省电力有限公司电力科学研究院 | A kind of distributed fiberoptic sensor |
| CN109307444A (en) * | 2018-11-16 | 2019-02-05 | 上海海事大学 | A kind of non-maintaining multistage-combination electricity jet pump |
| CN112378428A (en) * | 2020-09-18 | 2021-02-19 | 云南电网有限责任公司昭通供电局 | Sag real-time monitoring device and method for ice melting through-flow process of optical fiber composite overhead ground wire |
-
2017
- 2017-07-11 CN CN201720836487.6U patent/CN206932067U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109141487A (en) * | 2018-07-25 | 2019-01-04 | 国网河北省电力有限公司电力科学研究院 | A kind of distributed fiberoptic sensor |
| CN108957209A (en) * | 2018-08-01 | 2018-12-07 | 四川特旺通信科技有限公司 | A kind of broken string automatic detection device of telecommunication optical fiber optical cable production |
| CN108957209B (en) * | 2018-08-01 | 2020-11-24 | 四川特旺通信科技有限公司 | Automatic broken line detection device for communication optical fiber cable production |
| CN109307444A (en) * | 2018-11-16 | 2019-02-05 | 上海海事大学 | A kind of non-maintaining multistage-combination electricity jet pump |
| CN109307444B (en) * | 2018-11-16 | 2024-04-02 | 上海海事大学 | Maintenance-free multistage combined electrojet pump |
| CN112378428A (en) * | 2020-09-18 | 2021-02-19 | 云南电网有限责任公司昭通供电局 | Sag real-time monitoring device and method for ice melting through-flow process of optical fiber composite overhead ground wire |
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Granted publication date: 20180126 Termination date: 20210711 |