CN106329385B - A kind of OPGW ice covering thickness measurement method and its measuring device - Google Patents

A kind of OPGW ice covering thickness measurement method and its measuring device Download PDF

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CN106329385B
CN106329385B CN201510386814.8A CN201510386814A CN106329385B CN 106329385 B CN106329385 B CN 106329385B CN 201510386814 A CN201510386814 A CN 201510386814A CN 106329385 B CN106329385 B CN 106329385B
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ice
melt
melting
opgw
ground wire
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CN106329385A (en
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雷煜卿
陈希
汪洋
仝杰
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State Grid Corp of China SGCC
China Electric Power Research Institute Co Ltd
State Grid Sichuan Electric Power Co Ltd
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State Grid Corp of China SGCC
China Electric Power Research Institute Co Ltd
State Grid Sichuan Electric Power Co Ltd
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Abstract

The present invention relates to a kind of OPGW ice covering thickness measurement method and its measuring devices, which comprises (1) the icing situation of real-time monitoring OPGW ground wire route;(2) when monitoring that ice covering thickness is more than warning thickness on OPGW ground wire route, ice-melt alert message is issued;(3) according to the ice-melt alert message, ice-melt circuit is established;(4) ice-melt is carried out according to the ice-melt circuit;(5) monitor and acquire the ice-melt temperature and progress of the OPGW ground wire route;(6) after the coating ice falling degree of the OPGW ground wire route reaches requirement, stop ice-melt.Technical solution of the present invention shows the continuous measurement of the icing of optical fiber composite overhead ground wire.

Description

A kind of OPGW ice covering thickness measurement method and its measuring device
Technical field:
The present invention relates to electric system power transmission and transformation on-line monitoring technique fields, are more particularly to a kind of OPGW ice covering thickness survey Amount method and its measuring device.
Background technique:
The icing of current power transmission route monitors main still manually inspection, the area of high pressure and extra high voltage network distribution Domain is with a varied topography, bad environments, so that line walking work is very arduous.By sensor technology, the communication technology, power supply and anti-strong jamming The development of the restriction of the factors such as technology, icing on-line monitoring technique is very slow.Mainly use wire icing accumulated snow certainly both at home and abroad Dynamic detection weather station, wire icing accumulated snow detects automatically and forecast system, tower load measurement and data collection system, power transmission line Road ice load telemetering equipment etc..The principle of these devices is the variation of route, conducting wire and tower load after detecting wire icing. Analog conducting wire method is method relatively simple in these icing measurement methods.Analog conducting wire method is by icing station or attached Nearly one section lead of the construction of line carrys out transmission line simulation, estimates transmission line of electricity by the ice covering thickness on measurement analog conducting wire Icing situation, this mode are applied relatively more at present.Analog conducting wire method advantage principle is fairly simple, easily operated, but simulation is led Line measurement method there are some problems, the ice covering thickness measured on analog conducting wire first usually with the icing on actual motion conducting wire Thickness has difference;Furthermore with the progress that conducting wire ice-melt works, the icing on analog conducting wire can not be removed the same period, cause conducting wire The failure of icing monitoring function.
Summary of the invention:
The object of the present invention is to provide a kind of OPGW ice covering thickness measurement method and its measuring devices, realize optical fiber composite frame The continuous measurement of the icing of vacant lot line.
To achieve the above object, the invention adopts the following technical scheme: a kind of OPGW ice covering thickness measuring device, including melt Ice system, the distributed light with the ice covering monitoring system of ice melting system communication connection and ice melting system communication connection Fine temp measuring system and ice-melt circuit;The ice covering monitoring system is connect with FBG fiber-optic grating sensor;The distribution type fiber-optic is surveyed Temperature system is connect by outdoor optical cable with OPGW ground wire;The ice-melt circuit includes being respectively used to connection ice melting system and phase line of transmitting electricity With the ice-melt short circuit of ice melting electric cable and connection transmission of electricity phase line and the OPGW ground wire for connecting ice melting system and OPGW ground wire Line.
The ice melting system, ice covering monitoring system and temperature-measuring system of distributed fibers pass through 485 buses and establish communication chain Road;The ice covering monitoring system to the ice melting system issue start ice-melt control instruction, start the ice melting system and according to Preset ice melting current starts ice-melt, and the ice covering monitoring system does not control the ice melting system at this time;
After the ice melting system starts ice-melt, the ice melting system issues ice-melt to the temperature-measuring system of distributed fibers Sign on;The temperature-measuring system of distributed fibers starts to control ice melting system;Monitoring and acquisition institute are entered at this time During stating the temperature of OPGW ground wire line ice-melting and judging ice-melt progress.
The temperature-measuring system of distributed fibers is adjusted in real time according to the OPGW ground wire line ice-melting temperature, Xiang Suoshu Ice melting system, which issues, increases or reduces ice melting current signal.
After ice-melt, the temperature-measuring system of distributed fibers is issued to the ice melting system and is instructed, and is melted described in control Ice system stops output electric current;The ice melting system issues ice-melt END instruction to the ice covering monitoring system.
The ice covering monitoring system is thick by icing on the FBG fiber-optic grating sensor real-time monitoring OPGW ground wire route Degree;When the ice covering thickness is more than warning thickness, the ice covering monitoring system issues ice-melt alert message.
A kind of OPGW ice covering thickness measurement method, comprising:
(1) the icing situation of real-time monitoring OPGW ground wire route;
(2) when monitoring that ice covering thickness is more than warning thickness on OPGW ground wire route, ice-melt alert message is issued;
(3) according to the ice-melt alert message, ice-melt circuit is established;
(4) ice-melt is carried out according to the ice-melt circuit;
(5) monitor and acquire the ice-melt temperature and progress of the OPGW ground wire route;
(6) after the coating ice falling degree of the OPGW ground wire route reaches requirement, stop ice-melt.
In the step (3), the ice-melt circuit includes ice melting electric cable and ice-melt short-circuit line;The ice melting electric cable is used for Connection ice melting system phase line and connect ice melting system and OPGW ground wire with transmitting electricity;It transmits electricity described in the ice-melt short-circuit line connection phase line With the OPGW ground wire.
The ice-melt circuit is connect with ice melting system;By being actuated for ice-melt to the ice melting system.
The ice melting current that the ice melting system issues is adjusted in real time according to the ice-melt temperature of the OPGW ground wire route.
Compared with the nearest prior art, the technical scheme provide by that invention has the following excellent effect
1, technical solution of the present invention is melted using temperature-measuring system of distributed fibers and ice covering monitoring system co- controlling direct current Ice power supply overcomes what the ice covering thickness measured on analog conducting wire can not change with the ice covering thickness same period on actual motion conducting wire Problem;
2, technical solution of the present invention passes through the judgement of combining of temperature-measuring system of distributed fibers and ice covering monitoring system, solves The problem continuously monitored of OPGW ground wire icing;
3, technical solution of the present invention realizes the ice-melt temperature in deicing processes using temperature-measuring system of distributed fibers Real-time monitoring, distributed temperature monitoring, can prevent destruction of the optical cable in superhigh temperature, the service life of effective protection OPGW optical cable and Ensure the safe operation of optical cable;
4, technical solution of the present invention can realize conductor temperature monitoring and the overtemperature of electric system optical fiber composite overhead ground wire Alarm, ice covering thickness monitoring and icing critical state alarm, the monitoring of icing melting state, optical cable ice-melt ancillary control function;
5, technical solution of the present invention guarantees the operational reliability of optical fiber composite overhead ground wire.
Detailed description of the invention
Fig. 1 is the measuring device structural schematic diagram of the embodiment of the present invention;
Fig. 2 is the method flow diagram of the embodiment of the present invention;
Wherein, 1- ice covering monitoring system, 2- temperature-measuring system of distributed fibers, 3- DC ice melting power supply, 4- outdoor optical cable, 5- Ice melting electric cable, 6- transmission of electricity phase line, 7-FBG fiber-optic grating sensor, 8-OPGW ground wire, 9- ice-melt short-circuit line.
Specific embodiment
Below with reference to embodiment, the invention will be described in further detail.
Embodiment 1:
The invention of this example provides a kind of OPGW ice covering thickness measurement method and its measuring device;Technical solution of the present invention passes through The combined monitoring for analog conducting wire ice covering monitoring system and distributed optical fiber temperature measurement the monitoring system that Fiber Bragg Grating technology is realized is realized The continuous measurement of the icing of optical fiber composite overhead ground wire.The icing monitoring scheme for the optical fiber composite overhead ground wire that the application is constituted can Realize conductor temperature monitoring and overtemperature alarm, ice covering thickness monitoring and the critical shape of icing of electric system optical fiber composite overhead ground wire State alarm, the monitoring of icing melting state, optical cable ice-melt ancillary control function etc., guarantee the reliable for operation of optical fiber composite overhead ground wire Property.
The method includes as shown in Figure 2:
Step 1: in icing phase, first three ice covering monitoring system 1, temperature-measuring system of distributed fibers 2, ice melting system masters Communication link is established by 485 buses between machine.The ice melting system is that DC ice melting power supply 3 is main equipment, ice covering monitoring system 1 It is used as with temperature-measuring system of distributed fibers 2 from equipment.The DC ice melting power supply 2 is initiated liaison and is aroused.
Step 2: in the icing phase, 1 continuous operation of ice covering monitoring system is passed by the FBG fiber grating being affiliated on shaft tower Sensor 7 monitors the icing situation of OPGW ground wire route.
Step 3: the ice covering monitoring system 1 monitors to cover on OPGW ground wire route by FBG fiber-optic grating sensor 7 When ice thickness is more than warning thickness, ice-melt alert message is issued immediately, and pop up the confirmation dialog box of ice-melt power initiation.Electric power The company relevant personnel build ice-melt circuit as needed, and ice melting electric cable 5 is connected in transmission of electricity a phase line 6 and OPGW ground wire 8, Upper ice-melt short-circuit line 9 is connected in the end to ice-melt section simultaneously.
Step 4: the confirmation dialog box that DC ice melting power supply 3 starts is confirmed on ice covering monitoring system 1.Icing monitoring system System 1 is issued to DC ice melting power supply 3 starts ice-melt control instruction, and starting DC ice melting power supply 3 is opened according to preset ice melting current Beginning ice-melt, ice covering monitoring system 1 abandon the control of DC ice melting power supply 3.
Step 5: after DC ice melting power supply 3 starts ice-melt, DC ice melting power supply 3 is immediately to distributed optical fiber temperature measurement system System 2 issues ice-melt sign on.Temperature-measuring system of distributed fibers 2 obtains the control of DC ice melting power supply 3, enters ice-melt line In the temperature monitoring on road and the deterministic process of ice-melt progress.
Step 6: in deicing processes, temperature-measuring system of distributed fibers 2 and the continuous two-way communication of DC ice melting power supply 3.Point Cloth optical fiber temperature measurement system 2 adjusts ice-melt strategy according to 8 ice-melt temperature of OPGW ground wire in real time, issues and increases to DC ice melting power supply 3 Big or reduction ice melting current signal, ensures that OPGW ground wire 8 is in best ice-melt state.
Step 7: temperature-measuring system of distributed fibers 2 monitors 8 temperature variations of OPGW ground wire, according to the icing of acquisition Temperature information on OPGW ground wire 8 judges that icing melts progress.After 8 coating ice falling degree of OPGW ground wire reaches certain requirement, Determine that ice-melt terminates.Then the temperature-measuring system of distributed fibers 2 issues instruction, and control DC ice melting power supply 3 stops output electricity Stream, ice-melt terminate.
Step 8: after this ice-melt terminates, DC ice melting power supply 3, which issues ice-melt to ice covering monitoring system 1, to be terminated to refer to It enables, ice covering monitoring system 1OPGW ground wire 8 is told to deice completion.Ice covering monitoring system 1 immediately enters new ice covering thickness monitoring week Phase recalculates ice covering thickness growth pattern on analog conducting wire on the basis of existing ice thickness.One is entered step to step 8 institute State process.
Step 9: when meteorological condition takes a turn for the better, related staff determines to remove ice-melt circuit, at this time ice covering monitoring system 1 The phase is monitored into independent.Stop ice and monitors system, temperature-measuring system of distributed fibers 2, the triangular communication of DC ice melting power supply 3.
The measuring device includes as shown in Figure 1:
Ice covering monitoring system 1, temperature-measuring system of distributed fibers 2, DC ice melting power supply 3, outdoor optical cable 4, ice melting electric cable 5, Transmission of electricity phase line 6, FBG fiber-optic grating sensor 7, OPGW ground wire 8 and ice-melt short-circuit line 9.The OPGW ground wire 8 is used more containing thermometric Mould or single mode optical fiber, and be insulation with shaft tower after insulating is transformed.The temperature-measuring system of distributed fibers 2 and OPGW Ground wire 8 is connected by outdoor optical cable 4.The temperature-measuring system of distributed fibers 2 and 3 two-way communication of DC ice melting power supply, transmission control Signal processed.The ice covering monitoring system 1 and 3 two-way communication of DC ice melting power supply, transmission of control signals.The ice covering monitoring system 1 connect with FBG fiber-optic grating sensor 7.The DC ice melting power supply 3 is connected OPGW ground wire 8 and a phase by ice melting electric cable 5 Transmission of electricity phase line 6.When ice-melt, ice-melt short-circuit line 9 is responsible for connection OPGW ground wire 8 and transmission of electricity phase line 6.
The distributed optical fiber temperature measurement monitoring system applied in this application be based on fiber raman scattering phenomenon (RAMAN) and Real-time, online, the continuous temperature measurement technology of optical time domain reflection (OTDR).The distributed optical fiber temperature measurement monitoring system has height Spatial resolution, high thermometric accuracy, high positional accuracy.Its main feature is that: high reliablity, rate of false alarm be low, not by electromagnetic interference, Networking capability is strong, be easily integrated, extend convenient, intelligence degree is high, convenient for debugging, maintenance and management, system simply, safeguard at This is low.
Finally it should be noted that: the above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof, institute The those of ordinary skill in category field is although should be understood with reference to the above embodiments: still can be to a specific embodiment of the invention It is modified or replaced equivalently, these are without departing from any modification of spirit and scope of the invention or equivalent replacement, in Shen Within claims of the invention that please be pending.

Claims (8)

1. a kind of OPGW ice covering thickness measuring device, it is characterised in that: communicated to connect including ice melting system, with the ice melting system Ice covering monitoring system, with the ice melting system communication connection temperature-measuring system of distributed fibers and ice-melt circuit;The icing Monitoring system is connect with FBG fiber-optic grating sensor;The distributed optical fiber temperature measurement system is connected by outdoor optical cable and OPGW ground wire It connects;The ice-melt circuit includes being respectively used to connection ice melting system with transmission of electricity phase line and for connecting ice melting system and OPGW ground wire Ice melting electric cable and connection transmission of electricity phase line and the OPGW ground wire ice-melt short-circuit line;
The ice melting system, ice covering monitoring system and temperature-measuring system of distributed fibers pass through 485 buses and establish communication link;Institute It states ice covering monitoring system and is issued to the ice melting system and start ice-melt control instruction, start the ice melting system and according to preset Ice melting current starts ice-melt, and the ice covering monitoring system does not control the ice melting system at this time;
After the ice melting system starts ice-melt, the ice melting system issues ice-melt to the temperature-measuring system of distributed fibers and starts Instruction;The temperature-measuring system of distributed fibers starts to control ice melting system;It is entered described in monitoring and acquisition at this time The temperature of OPGW ground wire line ice-melting and during judging ice-melt progress.
2. a kind of OPGW ice covering thickness measuring device as described in claim 1, it is characterised in that: the distributed optical fiber temperature measurement System is adjusted in real time according to the OPGW ground wire line ice-melting temperature, and Xiang Suoshu ice melting system, which issues, increases or reduce ice-melt Current signal.
3. a kind of OPGW ice covering thickness measuring device as claimed in claim 2, it is characterised in that: described after ice-melt Temperature-measuring system of distributed fibers is issued to the ice melting system and is instructed, and is controlled the ice melting system and is stopped output electric current;It is described to melt Ice system issues ice-melt END instruction to the ice covering monitoring system.
4. a kind of OPGW ice covering thickness measuring device as claimed in claim 3, it is characterised in that: the ice covering monitoring system is logical Cross ice covering thickness on the FBG fiber-optic grating sensor real-time monitoring OPGW ground wire route;When the ice covering thickness is more than warning When thickness, the ice covering monitoring system issues ice-melt alert message.
5. a kind of measurement method of OPGW ice covering thickness measuring device as described in claim 1, it is characterised in that: include:
(1) the icing situation of real-time monitoring OPGW ground wire route;
(2) when monitoring that ice covering thickness is more than warning thickness on OPGW ground wire route, ice-melt alert message is issued;
(3) according to the ice-melt alert message, ice-melt circuit is established;
(4) ice-melt is carried out according to the ice-melt circuit;
(5) monitor and acquire the ice-melt temperature and progress of the OPGW ground wire route;
(6) after the coating ice falling degree of the OPGW ground wire route reaches requirement, stop ice-melt.
6. a kind of OPGW ice covering thickness measurement method as claimed in claim 5, it is characterised in that: in the step (3), institute Stating ice-melt circuit includes ice melting electric cable and ice-melt short-circuit line;The ice melting electric cable is for connecting ice melting system and transmission of electricity phase line and company Connect ice melting system and OPGW ground wire;Transmission of electricity phase line and the OPGW ground wire described in the ice-melt short-circuit line connection.
7. such as a kind of OPGW ice covering thickness measurement method described in claim 5 or 6, it is characterised in that: the ice-melt circuit with Ice melting system connection;By being actuated for ice-melt to the ice melting system.
8. a kind of OPGW ice covering thickness measurement method as claimed in claim 7, it is characterised in that: according to the OPGW ground wire line The ice-melt temperature on road adjusts the ice melting current that the ice melting system issues in real time.
CN201510386814.8A 2015-07-03 2015-07-03 A kind of OPGW ice covering thickness measurement method and its measuring device Active CN106329385B (en)

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Publication number Priority date Publication date Assignee Title
CN107894402B (en) * 2017-11-06 2020-02-07 哈尔滨工业大学 Icing monitoring and ice melting system based on fiber bragg grating and graphene film
CN110243295A (en) * 2019-06-21 2019-09-17 永州电力勘测设计院有限公司 Transmission line icing method for measuring thickness based on distributed optical fiber vibration sensor
CN111668937A (en) * 2020-06-16 2020-09-15 中国南方电网有限责任公司超高压输电公司 Monitoring method and monitoring system for ice coating of optical fiber composite overhead ground wire

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CH263181A (en) * 1947-02-20 1949-08-15 Svit Np Procedure for removing icing on the overhead line of electric railways.
CN102255274B (en) * 2011-08-03 2013-06-12 南方电网科学研究院有限责任公司 Direct-current de-icing method of overhead ground wire and composite optical fibre ground wire
CN102611062A (en) * 2012-03-13 2012-07-25 云南电力试验研究院(集团)有限公司电力研究院 Method for determining parameters of transmission line overhead ground wire direct-current ice-melting device
CN202522342U (en) * 2012-04-27 2012-11-07 河南科信电缆有限公司 Electric transmission line monitoring system based on fiber bragg grating sensor
CN103151745A (en) * 2013-02-20 2013-06-12 浙江浙电经济技术研究院 Method for deicing by connecting double-side deicing overhead ground wires in series
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