CN204359461U - A kind of electric aerial optical cable distributed on line monitoring device - Google Patents
A kind of electric aerial optical cable distributed on line monitoring device Download PDFInfo
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- CN204359461U CN204359461U CN201420815163.0U CN201420815163U CN204359461U CN 204359461 U CN204359461 U CN 204359461U CN 201420815163 U CN201420815163 U CN 201420815163U CN 204359461 U CN204359461 U CN 204359461U
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Abstract
The utility model discloses a kind of electric aerial optical cable distributed on line monitoring device, comprise Brillouin optical time-domain reflectometer, guide optical cable, fiber optic closure, electric aerial optical cable and light change-over switch, Brillouin optical time-domain reflectometer is provided with for sending pulsed laser signal and the optical port of the brillouin frequency spectrum signal of reception feedback, guide optical cable to comprise the first guiding optical fiber and second and guide optical fiber, electric aerial optical cable is provided with light unit, light unit comprises solid drawn tube and the tightly packaged fiber be arranged in solid drawn tube and at least one naked fibre, relative to solid drawn tube, tightly packaged fiber does not have remaining length, the remaining length of naked fibre is 0.9-1.1%, advantage is by using Brillouin optical time-domain reflectometer, so only utilize the inner light unit of electric aerial optical cable can realize reaching the overhead transmission line temperature of dozens of kilometres and Strain Distribution formula is measured in real time.
Description
Technical field
The utility model relates to overhead transmission line monitoring field, especially relates to a kind of electric aerial optical cable distributed on line monitoring device.
Background technology
Electric aerial optical cable is the important carrier of communication of power system, scheduling.At present, electric aerial optical cable mainly contains the heavy optical cable ADSS of dielectric, self-supporting, OPGW optical and optical phase conductor OPPC, especially OPGW and OPPC, has ground wire/phase line and the dual-use function that communicates, is widely used in electric power transmission line.But the same with common overhead transmission line, electric aerial optical cable is distributed widely in field, and the safe and stable operations of factor to circuit such as aging circuit, meteorological disaster and outside destroy also exist huge threat.Traditional overhead transmission line inspection mainly relies on operation maintenance personnel periodically to make an inspection tour, exist and not easily find a lot of limitation such as trouble spot, poor real, monitoring range be limited, can not meet current intelligent grid construction demand, therefore, the communication of advanced person, sensing technology and technology of transmission of electricity are carried out merge and integrated, the health information of timely acquisition transmission line of electricity, the automatization level improving operational management is the developing direction of power industry.
Temperature and strain real-time measured information and the long-term operating history data of power overhead network, can reflect the health status of overhead transmission line, and the local hot spot of Timeliness coverage overhead transmission line or the fault such as icing, disconnected stock, ensure electric power delivery safety.No. 201220385724.9 Chinese utility model patents " the online comprehensive monitor system of extra high voltage network " (grant number CN202757987U) that on February 27th, 2013, bulletin was authorized disclose a kind of intelligent comprehensive monitoring system comprising distribution type fiber-optic In-Line Temperature Measure System, the sensing optic cable of distribution type fiber-optic In-Line Temperature Measure System is implanted in power cable, can the dynamic current-carrying capacity of Real-Time Monitoring conductor temperature and cable.But distribution type fiber-optic In-Line Temperature Measure System can only utilize sensor fibre to realize the measurement of temperature of electric transmission line in this patent.Patent " a kind of temperature and strain on-Line Monitor Device merging OPPC " (application number 201320019170.5) proposes a kind of temperature and the strain on-Line Monitor Device that merge OPPC, this process employs raman type Fibre Optical Sensor and realize temp sensing function, then Brillouin's type Fibre Optical Sensor is utilized to realize strain measurement function, because the performance of Raman setup sharply declines with apart from increasing thus limits measuring distance, and the method has used two kinds of measuring equipments to add system cost.The light unit that patent " optical phase conductor and system for distributed temperature strain monitoring " (application number 201310182448.5) proposes a kind of favourable optical phase conductor (OPPC) inner realizes line temperature, the method of strain monitoring, this OPPC needs to arrange naked fibre and single mode tightly packaged fiber two light unit, manufacturing cost can be increased, and naked fibre and single mode tightly packaged fiber light unit are positioned at stranded layer relative position, the temperature of the light unit of two diverse locations under wind condition is had to there are differences, single mode tightly packaged fiber in addition for strain monitoring is positioned at stranded layer, exist stranded remaining long, can not meet aerial optical cable tension force less time strain monitoring.
Summary of the invention
Technical problem to be solved in the utility model provides the electric aerial optical cable distributed on line monitoring device that a kind of manufacturing cost is relatively low, can meet multiple monitoring of environmental.
The utility model solves the problems of the technologies described above adopted technical scheme: a kind of electric aerial optical cable distributed on line monitoring device, comprise Brillouin optical time-domain reflectometer, guide optical cable, fiber optic closure, electric aerial optical cable and light change-over switch, described Brillouin optical time-domain reflectometer is provided with for sending pulsed laser signal and the optical port of the brillouin frequency spectrum signal of reception feedback, described guiding optical cable comprises the first guiding optical fiber and second and guides optical fiber, described light change-over switch is provided with light input end mouth, first optical output port and the second optical output port, described optical port is connected with described light input end mouth, the first described optical output port and described first guides the input end of optical fiber to be connected, the second described optical output port and described second guides the input end of optical fiber to be connected, described electric aerial optical cable is provided with light unit, described light unit comprises solid drawn tube and the tightly packaged fiber be arranged in described solid drawn tube and at least one naked fibre, the input end and described first of described tightly packaged fiber guides the output terminal of optical fiber to be connected in described fiber optic closure, the input end and described second of described naked fibre guides the output terminal of optical fiber to be connected in described fiber optic closure, relative to described solid drawn tube, described tightly packaged fiber does not have remaining length, the remaining length of described naked fibre is 0.9-1.1%.
Naked fibre in described light unit seamless pipe is laid round tightly packaged fiber spiral.
Described light unit is arranged at the central core of described electric aerial optical cable.
If in order to obtain larger strain measurement scope, described light unit can also be arranged at the stranded layer of described electric aerial optical cable.
Described guiding optical cable is common communications optical cable, and guides setting at least two in optical cable to guide optical fiber.
Compared with prior art, the utility model has the advantage of by using Brillouin optical time-domain reflectometer, so only utilizing electric aerial optical cable, inner a light unit can realize overhead transmission line temperature, Strain Distribution formula is measured in real time, without the need to extra placement sensor, construction is simple, and do not affect the structure of electric aerial optical cable, stress distribution properties and manufacturing process, be easy to realize, the distributed temperature strain monitoring reaching dozens of kilometres can be realized.Brillouin optical time-domain reflectometer is a kind of novel device of real-time measuring optical fiber brillouin frequency Spectral structure, Brillouin's frequency spectrum to temperature, the strain cross sensitivity of optical fiber, therefore utilizes Brillouin optical time-domain reflectometer can obtain optical fiber temperature along the line or/and Strain Distribution information simultaneously.After Brillouin optical time-domain reflectometer receives the scattered signal of the tightly packaged fiber of electric aerial optical cable interior lights unit, naked fibre respectively, calculate the omnidistance distributed intelligence of Brillouin's frequency spectrum of tightly packaged fiber, naked fibre.In aerial optical cable same position, the tightly packaged fiber of light unit inside is substantially identical with the temperature that naked fibre bears, because naked fibre being provided with is greater than more than 0.9% length, even if when there is strain and tensile deformation occur in aerial optical cable, also naked fibre can't be made stressed, therefore the naked fibre in light unit is only relevant with the temperature of overhead transmission line, and irrelevant with strain; And there is no remaining length due to the tightly packaged fiber of light unit inside, also synchronously can have influence on the tightly packaged fiber in light unit when therefore electric aerial optical cable exists strain and deformation occurs, because of tightly packaged fiber in this element and overhead transmission line temperature with strain simultaneously relevant.In conjunction with the brillouin frequency spectrum information (only relevant with temperature) of fibre naked in light unit, the brillouin frequency spectrum information of the strained impact of tightly packaged fiber in light-emitting units can be separated, thus realize the temperature of electric aerial optical cable and the distributed monitoring of strain.Use fiber optic closure to have fused fiber splice defencive function, and unnecessary optical fiber can be coiled.
Permission maximum tension due to electric aerial optical cable design is general comparatively large, and when normal stringing is installed, tension force is less, if do not need to monitor stress when stringing is installed, described smooth unit can be arranged at the stranded layer of electric aerial optical cable.Now, because light unit is positioned at stranded layer, there is certain stranded remaining length, thus obtain larger strain measurement scope.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model electric aerial optical cable distributed on line monitoring device;
Fig. 2 is the structural representation of light unit at the electric aerial optical cable of central core of the utility model embodiment one;
Fig. 3 is the structural representation of light unit at the electric aerial optical cable of stranded layer of the utility model embodiment two.
Embodiment
Below in conjunction with accompanying drawing embodiment, the utility model is described in further detail.
Embodiment one: as shown in Figure 1, a kind of electric aerial optical cable distributed on line monitoring device based on optical time domain reflectometer in cloth, comprising: Brillouin optical time-domain reflectometer 1, guiding optical cable 2, fiber optic closure 3, electric aerial optical cable 4 and light change-over switch 5.Electric aerial optical cable 4 as shown in Figure 2, optical phase conductor OPPC, have delivery of electrical energy and power communication function concurrently, comprise light unit 41, aluminum cald steel wire line 42 and aluminum steel 43, light unit 41 is arranged on the central core of electric aerial optical cable 4, and light unit 41 comprises solid drawn tube 410 and the tightly packaged fiber 411 be arranged in solid drawn tube 410 and the six roots of sensation naked fine 412, relative to solid drawn tube 410, tightly packaged fiber 411 does not have remaining length, and naked fine more than 412 length are 0.9%, Brillouin optical time-domain reflectometer 1 has optical port 11, for sending pulsed laser signal and receiving the brillouin frequency spectrum signal fed back, guide in optical cable 2 and be provided with the first guiding optical fiber 21 and the second guiding optical fiber 22, light change-over switch 5 has light input end mouth 51, first optical output port 52 and the second optical output port 53, optical port 11 is connected with light input end mouth 51, first optical output port 52 and first guides the input end of optical fiber 21 to be connected, second optical output port 53 and second guides the input end of optical fiber 22 to be connected, the input end and first of tightly packaged fiber 411 guides the output terminal of optical fiber 21 to be connected in fiber optic closure 3, the naked input end of fine 412 and second guides the output terminal of optical fiber 22 to be connected in fiber optic closure 3, fiber optic closure 3 is conventional outdoor version, can protect optical fiber fusion welding point, coiling storage excess fiber.
Embodiment two: structure and embodiment one similar, difference is that light unit 41 is arranged on the stranded layer of electric aerial optical cable 4, as shown in Figure 3.Naked fine 412 have two, and the remaining length of naked fine 412 is 1.1%.
Above-described embodiment is when measuring the temperature of electric aerial optical cable 4, light change-over switch 5 is set to light input end mouth 51 to the first optical output port 52 and forbids, the conducting of light input end mouth 51 to the first optical output port 53, now the light that sends of Brillouin's type optical time domain reflectometer 1 is through light change-over switch 5, second guides optical fiber 22 to be input in naked fine 412, Brillouin's type optical time domain reflectometer 1 measures the Brillouin's frequency spectrum obtaining naked fine 412, because naked fine more than 412 length are larger, only relevant with the temperature of electric aerial optical cable 4, namely the brillouin frequency spectrum information of naked fine 412 only reacts the temperature information of aerial optical cable 4, when measuring the strain of electric aerial optical cable 4, light change-over switch 5 is set to the conducting of light input end mouth 51 to the first optical output port 52, light input end mouth 51 to the second optical output port 53 is forbidden, now the light that sends of Brillouin's type optical time domain reflectometer 1 is through light change-over switch 5, first guides optical fiber 21 to be input in tightly packaged fiber 411, Brillouin's type optical time domain reflectometer 1 measures the Brillouin's frequency spectrum obtaining naked fine 411, and tightly packaged fiber 411 does not have remaining length, the strain synchronous impact of electric aerial optical cable 4 is to the strain of tightly packaged fiber 411, therefore tightly packaged fiber 411 is simultaneously relevant with strain with the temperature of electric aerial optical cable 4.Brillouin frequency spectrum information (only relevant with temperature) in conjunction with naked fine 411, can isolate the brillouin frequency spectrum information of the strained impact of tightly packaged fiber 412, thus realize the temperature of electric aerial optical cable 4 and the distributed monitoring of strain.
Claims (5)
1. an electric aerial optical cable distributed on line monitoring device, it is characterized in that comprising Brillouin optical time-domain reflectometer, guide optical cable, fiber optic closure, electric aerial optical cable and light change-over switch, described Brillouin optical time-domain reflectometer is provided with for sending pulsed laser signal and the optical port of the brillouin frequency spectrum signal of reception feedback, described guiding optical cable comprises the first guiding optical fiber and second and guides optical fiber, described light change-over switch is provided with light input end mouth, first optical output port and the second optical output port, described optical port is connected with described light input end mouth, the first described optical output port and described first guides the input end of optical fiber to be connected, the second described optical output port and described second guides the input end of optical fiber to be connected, described electric aerial optical cable is provided with light unit, described light unit comprises solid drawn tube and the tightly packaged fiber be arranged in described solid drawn tube and at least one naked fibre, the input end and described first of described tightly packaged fiber guides the output terminal of optical fiber to be connected in described fiber optic closure, the input end and described second of described naked fibre guides the output terminal of optical fiber to be connected in described fiber optic closure, relative to described solid drawn tube, described tightly packaged fiber does not have remaining length, the remaining length of described naked fibre is 0.9-1.1%.
2. a kind of electric aerial optical cable distributed on line monitoring device as claimed in claim 1, is characterized in that the naked fibre in described light unit seamless pipe is laid round tightly packaged fiber spiral.
3. a kind of electric aerial optical cable distributed on line monitoring device as claimed in claim 1, is characterized in that described light unit is arranged at the central core of described electric aerial optical cable.
4. a kind of electric aerial optical cable distributed on line monitoring device as claimed in claim 1, is characterized in that described light unit can also be arranged at the stranded layer of described electric aerial optical cable.
5. a kind of electric aerial optical cable distributed on line monitoring device as claimed in claim 1, is characterized in that described guiding optical cable is common communications optical cable, arranges at least two and guide optical fiber in described guiding optical cable.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420815163.0U CN204359461U (en) | 2014-12-19 | 2014-12-19 | A kind of electric aerial optical cable distributed on line monitoring device |
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| CN201420815163.0U CN204359461U (en) | 2014-12-19 | 2014-12-19 | A kind of electric aerial optical cable distributed on line monitoring device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104535220A (en) * | 2014-12-19 | 2015-04-22 | 深圳市天音电力设备有限公司 | Electric power aerial optical cable distributive on-line monitoring device |
| CN112887017A (en) * | 2021-01-21 | 2021-06-01 | 国家电网有限公司 | Positioning method and positioning system for optical cable connecting tower |
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2014
- 2014-12-19 CN CN201420815163.0U patent/CN204359461U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104535220A (en) * | 2014-12-19 | 2015-04-22 | 深圳市天音电力设备有限公司 | Electric power aerial optical cable distributive on-line monitoring device |
| CN104535220B (en) * | 2014-12-19 | 2018-03-16 | 深圳市科迪讯电力设备有限公司 | A kind of electric aerial optical cable distributed on line monitoring device |
| CN112887017A (en) * | 2021-01-21 | 2021-06-01 | 国家电网有限公司 | Positioning method and positioning system for optical cable connecting tower |
| CN112887017B (en) * | 2021-01-21 | 2022-04-12 | 国家电网有限公司 | Positioning method and positioning system for optical cable connecting tower |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170209 Address after: Nanshan District Xili street of Shenzhen city in Guangdong province 518055 liuxiandong 20 Dong Industrial Zone No. 908 Patentee after: Shenzhen Kedi hearing Power Equipment Co. Ltd. Address before: Nanshan District Xili street of Shenzhen city in Guangdong province 510805 liuxiandong Industrial Zone No. 20 901D Patentee before: SHENZHEN TELLING POWER EQUIPMENT CO., LTD. |