CN103822722B - A kind of long-distance distributed temperature monitoring system based on optical phase conductor - Google Patents
A kind of long-distance distributed temperature monitoring system based on optical phase conductor Download PDFInfo
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- CN103822722B CN103822722B CN201410097790.XA CN201410097790A CN103822722B CN 103822722 B CN103822722 B CN 103822722B CN 201410097790 A CN201410097790 A CN 201410097790A CN 103822722 B CN103822722 B CN 103822722B
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Abstract
The invention provides a kind of long-distance distributed temperature monitoring system based on optical phase conductor, the system includes the main equipment and the slave unit that are connected with optical phase conductor respectively；Main equipment includes master controller and the probe source unit, pulse-modulator, optical circulator and the sonet multiplexer that are sequentially connected；Slave unit is included from controller and the pump light source unit, scrambler and the sonet multiplexer that are sequentially connected；Optical phase conductor includes a fiber unit, multiple aluminum-clad steel wires and multiple aluminum steels；Fiber unit includes a stainless steel tube for being provided with loose tube fiber；Single mode naked fibre in loose tube fiber meets ITU T.G.652 standards, and remaining scope long is 6 ‰~8 ‰.Compared with prior art, a kind of long-distance distributed temperature monitoring system based on optical phase conductor that the present invention is provided, when the scope that meets with stresses of optical phase conductor is defined to 0~40%RTS force value, the long-range long-distance distributed temperature monitoring to testing fiber composite aerial phase line can be realized.
Description
Technical field
The present invention relates to a kind of temperature monitoring system of transmission line of electricity, and in particular to one kind is based on optical phase conductor
Long-distance distributed temperature monitoring system.
Background technology
Optical phase conductor（Optical Phase Conductor, OPPC）For one kind makes full use of power system
The line resource of itself, fiber unit is compounded in the new special optical cable in wire.Optical phase conductor overcomes electricity
The aspect such as frequency resource, route coordination, electromagnetic compatibility and the problem of extraneous contradiction, are allowed to have transmission electric energy in power distribution network systems
And the dual-use function of communication.
Mountain area being installed on optical phase conductor, geographical and meteorological complicated, distance, distribution in addition dissipates, traditional more
The method efficiency patrolled and examined along manpower is low, working strength is big, it is impossible to meet the demand of phase line operation on-line monitoring.Prior art
In, it is main that trip temperature, stress collection are entered to optical phase conductor using Fibre Optical Sensor, so as to realize optical fiber composite overhead
The tubularpH sensor of phase line.Based on the optical fiber carried inside optical phase conductor, without adding any on the line
Part, running status and environmental information to optical phase conductor carry out real-time monitoring and control, and operations staff is in monitoring
Room can in real time grasp the ruuning situation of circuit, grasp clear accurate to trouble point, substantially increase overhaul efficiency.
Optical phase conductor as a kind of Novel optical cable for transmitting electricity and communicating, based on optical phase conductor
Optical fiber sensing technology be increasingly becoming transmission of electricity field of temperature measurement important technology research direction.Application No. 201120020503.7
Utility model patent discloses a kind of OPPC with temp sensing function, including a survey with grating temp sensing function
Warm optical fiber, it is possible to achieve the real time on-line monitoring of conductor temperature；Other single-mode fiber or volume in optical phase conductor
One root multimode fiber of outer increase, the distributed temperature of optical phase conductor is realized by raman type fibre optic temperature sensor DTS
Degree measurement.But the thermometry of fiber grating cannot realize the distributed satellite systems of wire, very little, information content is or not measuring point
Foot；The measurement range based on DTS temperature measurement technologies is generally less than 20km simultaneously, it is impossible to meet transmission line of electricity actual need more long
Ask.The utility model patent of Application No. 200920289025.2 discloses a kind of stress for being applied to OPPC OPPC
Strain gauge means, optical fiber and its are connect by the distribution type fiber-optic system BOTDR based on Brillouin scattering, monitoring computer, conduction
Head cartridge and OPPC OPPC are constituted, and can complete to monitor OPPC ess-strains abnormity point, but the patent application is not
There is proposition to avoid the technological means of temperature influence factor, the data of its measuring method measurement have certain inaccuracy.Application
Number a kind of temperature-measuring system of distributed fibers is disclosed for 200910175452 application for a patent for invention, including singlechip control panel,
Fiber optic temperature information acquisition module, photodetector and circuit signal post-processing module, can complete the temperature to temperature measuring optical cable
Monitoring, but do not have and optical phase conductor（OPPC）Combine and realize temperature survey, simply propose a kind of point
The implementation of cloth temperature measurement system.The application for a patent for invention of Application No. 201488836.U discloses a kind of for answering
Become the sensing optic cable with temperature monitoring, it is proposed that a kind of temperature that plugs is with strain sensing optical fiber and the silicon of TEMP metal hose
The sensing optic cable of rubber cover, but it is not directed to OPPC cables temperature and strain sensing structure.Application No.
201210337121.6 application for a patent for invention discloses a kind of long range Brillouin light time domain analyzer, gives based in cloth
The signal measurement implementation method in deep pool, but the method for being not directed to OPPC and temperature survey.Application No.
201110007053.2 application for a patent for invention discloses a kind of current-carrying capacity of cable monitoring based on distributed optical fiber temperature measuring method
Method and system, temperature-measuring optical fiber directly contact cable surface, but the measuring method cannot be used for OPPC temperature monitorings.Application number
The Apparatus and method for disclosed in the application for a patent for invention of US7412117 (PCT/GB2004/004383)
Distributed temperature sensing, OPPC complex circuit heat transfer features are not considered, do not account for frame
The property of empty optical cable multipoint connection.
Therefore it provides a kind of optical fiber of the temperature monitoring that can realize that optical phase conductor is long-distance distributed is compound
Aerial phase line and system are particularly important.
The content of the invention
The need in order to meet prior art, the invention provides a kind of long range based on optical phase conductor point
Cloth temperature monitoring system, the system includes the main equipment being connected with optical phase conductor by ADSS optical cables and from setting
It is standby；
The main equipment includes the probe source unit, pulse-modulator, optical circulator and the sonet multiplexer that are sequentially connected；
The probe source unit is joined directly together with master controller；The optical circulator passes through optical-electrical converter and the master controller phase
Even；Fiber optical transceiver is connected between the sonet multiplexer and the master controller；
The slave unit includes the pump light source unit, scrambler and the sonet multiplexer that are sequentially connected；The pump light source
Unit and the scrambler are joined directly together with from controller；The sonet multiplexer and described from connecting optical fiber between controller
Transceiver is connected.
Preferably, the optical phase conductor includes fiber unit, number at least two or a two or more
Aluminum-clad steel wire and aluminum steel；It is arranged in optical phase conductor after the fiber unit is stranded with the aluminum-clad steel wire
The heart；The aluminum steel is successively set on the periphery of the aluminum-clad steel wire；The fiber unit is provided with loose tube fiber including one
Stainless steel tube；
Preferably, the fiber unit is arranged on the ground floor inside the optical phase conductor；
Preferably, an at least core is set in the fiber unit pipe of the loose tube fiber has remaining single mode naked fibre long；It is described
Filled with ointment for protecting the single mode naked fibre in fiber unit；
Preferably, the single mode naked fibre meets ITU-T.G.652 standards, and remaining scope long is 6 ‰~8 ‰；
Preferably, the testing fiber in the optical phase conductor is single mode naked fibre described in 1 core；
Preferably, the working stress scope of the optical phase conductor is 0~40%RTS；
Preferably, the monitoring main frame being connected with remote monitoring terminal is provided with the transformer station of the main equipment side, for supervising
Survey personnel carry out remote distributed temperature monitoring to the optical phase conductor.
Compared with immediate prior art, excellent effect of the invention is：
1st, in technical solution of the present invention, Distributed Temperature Monitoring System is based on BOTDA（Brillouin Optical Time
Domain Analysis）Technology, by setting main equipment and slave unit, to being carried out in cloth everywhere in optical phase conductor
Deep frequency analysis, so that it is guaranteed that Distributed Temperature Monitoring System maintains stabilization, reliable working condition；
2nd, in technical solution of the present invention, the monitoring master being connected with remote monitoring terminal is provided with the transformer station of main equipment side
Machine, the optical phase conductor frequency information to Distributed Temperature Monitoring System collection is analyzed, and realizes monitoring personnel pair
The remote distributed temperature monitoring of optical phase conductor；
3rd, a kind of long-distance distributed temperature monitoring system based on optical phase conductor that the present invention is provided, effectively
Reduce the cost of the long-distance distributed temperature monitoring of optical phase conductor；
4th, a kind of long-distance distributed temperature monitoring system based on optical phase conductor that the present invention is provided, realizes
The all fronts temperature real-time monitoring of the optical phase conductor of extra long distance, so that the long-term fortune for passing through optical phase conductor
Row historical temperature data, can reflect the health status of optical phase conductor, and optical phase conductor is found in time
Local hot spot or the failure such as icing, stranded, improve the level monitoring of overhead transmission line power transmission process, ensure power Transmission
Safety.
Brief description of the drawings
The present invention is further described below in conjunction with the accompanying drawings.
Fig. 1 is：It is a kind of in the embodiment of the present invention to be used for long-distance distributed temperature monitoring system overall structure figure；
Fig. 2 is：It is a kind of in the embodiment of the present invention to be used for long-distance distributed temperature monitoring system cut-away view；
Fig. 3 is：Optical phase conductor structure chart in the embodiment of the present invention.
Specific embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from start to finish
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
It is exemplary to scheme the embodiment of description, it is intended to for explaining the present invention, and be not considered as limiting the invention.
In order to effectively reducing the long-distance distributed temperature monitoring cost of transmission line of electricity and improving its accuracy, this hair
It is bright there is provided a kind of long-distance distributed temperature monitoring system based on optical phase conductor；
The long range distribution based on the optical phase conductor disclosed in the present embodiment is respectively illustrated such as Fig. 1 and Fig. 2
Formula temperature monitoring system structure chart；
First, the system includes the main equipment and the slave unit that are connected with testing fiber composite aerial phase line by ADSS optical cables；
①：Main equipment includes the probe source unit, pulse-modulator, optical circulator and the sonet multiplexer that are sequentially connected；
Probe source unit is joined directly together with master controller；Optical circulator is connected by optical-electrical converter with master controller；Optical fiber multiplexing
Device is connected by fiber optical transceiver with master controller；The sonet multiplexer and probe source unit of main equipment pass through fiber coupler
It is connected with master controller after being connected with frequency detector respectively；
The monitoring main frame being connected with remote monitoring terminal is provided with the transformer station of main equipment side, for monitoring personnel to be measured
Optical phase conductor carries out remote distributed temperature monitoring；Monitoring main frame is received and stores region optical fiber composite overhead
The temperature data of phase line, completes the analysis of the temperature data of whole piece circuit, extracts real-time maximum temperature, minimum temperature, spy
The mean temperature of section of fixing time, maximum temperature rise speed equitemperature magnitude numerical value and positional information；Temperature over-range can be entered simultaneously
Row alarm；The initial data of Distributed Temperature Monitoring System is maintained on monitoring main frame with processing data, for long-range monitoring eventually
The monitoring personnel at end is checked, called.
②：Slave unit includes the pump light source unit, scrambler and the sonet multiplexer that are sequentially connected；Pump light source unit and
Scrambler is directly joined directly together with from controller；Sonet multiplexer is connected by fiber optical transceiver with from controller.
During testing fiber composite aerial phase line as shown in Figure 1 is the optical phase conductor connected by intermediate joint box
1 core single mode naked fibre；Optical phase conductor is connected with ADSS optical cables respectively by termination separator, and in passing through indirectly
Head cartridge connection realizes that the long range of thermometric phase line extends, so as to complete the temperature survey of whole piece optical phase conductor.
Optical phase conductor include fiber unit, number at least two and a more than two aluminum-clad steel wires and
Aluminum steel；Fiber unit is arranged on the center of optical phase conductor with aluminum-clad steel wire after stranded, and fiber unit is arranged on
Ground floor inside optical phase conductor is positioned adjacent to the outer layer position of optical phase conductor kernel of section；Aluminium
Line is successively set on the periphery of aluminum-clad steel wire.
Fiber unit includes a stainless steel tube for being provided with loose tube fiber；Tool is set in the fiber unit pipe of loose tube fiber
The single mode naked fibre for having a surplus long；Filled with ointment for protecting single mode naked fibre in fiber unit.The number of single mode naked fibre is at least one
It is individual, meet ITU-T.G.652 standards, remaining scope long is 6 ‰~8 ‰；Optical phase conductor working stress scope 0~
The temperature of the phase line can be effectively measured during 40%RTS.
Optical phase conductor structure is in the present embodiment as shown in Figure 3：
Fiber unit includes placing the list that 24 core diameters are 250 microns in the stainless steel tube of a diameter of 2.7mm, stainless steel tube
Mould naked fibre.
The center of optical phase conductor is an aluminum-clad steel wire of a diameter of 2.9mm；Fiber unit and five diameters
For the aluminum-clad steel wire of 2.8mm it is stranded after be placed on 2.9mm aluminum-clad steel wire peripheral ground floor.According to phase line design parameter upper
State the aluminum steel of periphery three layers of a diameter of 3.65mm stranded successively of fiber unit；Wherein, ground floor aluminum steel is 10, and the second layer is
16, third layer is 22.Corrosion protection ointment is filled between each layer of optical phase conductor to be used to protect single mode naked fibre, entirely
A diameter of 30.40mm of optical phase conductor.
One end of 1 core single mode naked fibre in fiber unit is connected to the light based on disclosed in the present embodiment as shown in Figure 2
On the optical channel of the pump light source unit of the long-distance distributed temperature monitoring system of fine composite aerial phase line, the other end is connected to
On the optical channel of probe source unit.
2nd, the course of work of Distributed Temperature Monitoring System is in the present embodiment：
①：Main equipment is interacted with slave unit and communicated：
Step 1：The Laser emission end of main controller controls fiber optical transceiver 1 sends the 1301nm according to certain rule encoding
Laser, 1301nm laser enters testing fiber composite aerial phase line after being multiplexed through sonet multiplexer 2；Then through sonet multiplexer 4
After demultiplexing, into the signal receiving end of fiber optical transceiver 3, receive signal and entered from control by the control end of fiber optical transceiver 3
Device processed；The command parameter for sending of master controller is parsed from controller；
Step 2：Sent according to the 1490nm laser of certain rule encoding, 1490nm by fiber optical transceiver 3 from controller
Laser enters testing fiber composite aerial phase line after being multiplexed through sonet multiplexer 3；Then after being demultiplexed through sonet multiplexer 2, enter
Enter the signal receiving end of fiber optical transceiver 1, receive signal and master controller is entered by the control end of fiber optical transceiver 1；Main control
Device parses the status information from the slave unit for sending of controller.
So far, main equipment is completed with slave unit interactive communication；Main equipment control slave unit in pump light source unit and disturb partially
The original state of device.
②：Probe source unit and pump light source unit send detection light and pump to testing fiber composite aerial phase line respectively
Pu light：
Pulse detection light is formed after the detection light pulse modulated device that probe source unit sends, pulse detection light leads to successively
The sonet multiplexer 2 for crossing optical circulator and main equipment is sent to testing fiber composite aerial phase line；Pump light source unit sends
The signal that pump light sends with the fiber optical transceiver 4 of slave unit is sent to testing fiber and answers by the sonet multiplexer 3 of slave unit
Close aerial phase line；Detection light is continuous laser.
③：Brillouin's frequency scanning is carried out to testing fiber composite aerial phase line：
The pump light that the detection light that fiber coupler sends to probe source unit sends with pump light source unit is clapped
Frequently；The beat frequency rate adjustment detection light frequency that master controller is obtained according to frequency detector, so as to realize testing fiber composite frame
Brillouin's frequency scanning of Kongxiang line；
Pump light in testing fiber composite aerial phase line and dorsad Brillouin scattering passes sequentially through the optical fiber of main equipment
Multiplexer 2, coupler 6, optical circulator and optical-electrical converter enter master controller；Master controller is to pump light and dorsad Brillouin
Scattering light carries out fiber to be measured Brillouin's frequency analysis everywhere, obtains the temperature information of testing fiber composite aerial phase line.
Finally it should be noted that：Described embodiment is only some embodiments of the present application, rather than whole realities
Apply example.Based on the embodiment in the application, those of ordinary skill in the art are obtained under the premise of creative work is not made
Every other embodiment, belong to the application protection scope.
Claims (7)
1. a kind of long-distance distributed temperature monitoring system based on optical phase conductor, it is characterised in that the system
Including the main equipment being connected with optical phase conductor by ADSS optical cables and slave unit；
The main equipment includes the probe source unit, pulse-modulator, optical circulator and the sonet multiplexer that are sequentially connected；It is described
Probe source unit is joined directly together with master controller；The optical circulator is connected by optical-electrical converter with the master controller；
The first fiber optical transceiver is connected between the sonet multiplexer and the master controller；
The slave unit includes the pump light source unit, scrambler and the sonet multiplexer that are sequentially connected；The pump light source unit
It is joined directly together with from controller with the scrambler；The sonet multiplexer and described from connecting the second optical fiber between controller
Transceiver；
The optical phase conductor is at least including fiber unit, the aluminum-clad steel wire of number at least two and a number
The aluminum steel of two；The center of optical phase conductor is arranged on after the fiber unit is stranded with the aluminum-clad steel wire；It is described
Aluminum steel is successively set on the periphery of the aluminum-clad steel wire；The fiber unit includes a stainless steel for being provided with loose tube fiber
Pipe.
2. a kind of long-distance distributed temperature monitoring system based on optical phase conductor as claimed in claim 1, its
It is characterised by, the fiber unit is arranged on the ground floor inside the optical phase conductor.
3. a kind of long-distance distributed temperature monitoring system based on optical phase conductor as claimed in claim 1, its
It is characterised by, described being provided with the stainless steel tube of loose tube fiber sets an at least core and have remaining single mode naked fibre long；The light
Filled with ointment for protecting the single mode naked fibre in fine unit.
4. a kind of long-distance distributed temperature monitoring system based on optical phase conductor as claimed in claim 3, its
It is characterised by, the single mode naked fibre meets ITU-T.G.652 standards, remaining scope long is 6 ‰~8 ‰.
5. a kind of long-distance distributed temperature monitoring system based on optical phase conductor as claimed in claim 3, its
It is characterised by, the testing fiber in the optical phase conductor is single mode naked fibre described in 1 core.
6. a kind of long-distance distributed temperature monitoring system based on optical phase conductor as claimed in claim 1, its
It is characterised by, the working stress scope of the optical phase conductor is 0~40%RTS.
7. a kind of long-distance distributed temperature monitoring system based on optical phase conductor as claimed in claim 1, its
It is characterised by, the monitoring main frame being connected with remote monitoring terminal is provided with the transformer station of the main equipment side, for monitoring personnel
Remote distributed temperature monitoring is carried out to the optical phase conductor.
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| CN106019009A (en) * | 2016-05-20 | 2016-10-12 | 国网天津市电力公司 | Cable current-carrying capacity monitoring method and system base on distributed fiber temperature measurement method |
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| CN203310540U (en) * | 2013-01-15 | 2013-11-27 | 中国电力科学研究院 | Temperature and strain on-line monitoring device integrating optical phase conductors |
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