CN102928757B - Insulator arc-over fault positioning device and positioning method based on discharging light detection - Google Patents

Insulator arc-over fault positioning device and positioning method based on discharging light detection Download PDF

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Publication number
CN102928757B
CN102928757B CN201210477981.XA CN201210477981A CN102928757B CN 102928757 B CN102928757 B CN 102928757B CN 201210477981 A CN201210477981 A CN 201210477981A CN 102928757 B CN102928757 B CN 102928757B
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China
Prior art keywords
insulator
arc
flashover
over
positioning
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CN201210477981.XA
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Chinese (zh)
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CN102928757A (en
Inventor
陈新岗
古亮
李山
黄会贤
汪能文
陈鹏
邹文平
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重庆理工大学
重庆市电力公司长寿供电局
国家电网公司
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Priority to CN201210477981.XA priority Critical patent/CN102928757B/en
Publication of CN102928757A publication Critical patent/CN102928757A/en
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Publication of CN102928757B publication Critical patent/CN102928757B/en

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    • Y04S10/522

Abstract

The invention discloses an insulator arc-over fault positioning device and a positioning method based on discharging light detection. The insulator arc-over fault positioning device comprises a micro-consumption pinhole camera, a solar battery, a storage battery, an image processing singlechip, a counting unit, a wireless transmission module, an image receiving unit and an alarm unit, wherein the micro-consumption pinhole camera is used for collecting insulator arc-over discharging light, the image processing singlechip is used for controlling the micro-consumption pinhole camera to collect parameters and analyze and judge whether arc-over discharging is incurred to an insulator according to a collecting result, the counting unit is used for counting the number of arc-over times, the wireless transmission module is used for transmitting an arc-over picture to the image receiving unit, the solar battery and the storage battery are used as power supply devices, the image receiving unit is used for receiving and storing the arc-over picture transmitted by the wireless transmission module and the alarm unit is used for transmitting an alarm signal. The insulator arc-over fault positioning device and the positioning method based on the discharging light detection have the advantages of intuitively and effectively positioning the insulator with arc-over fault, improving working efficiency of line walking personnel and shortening fault eliminating time.

Description

The insulator arc-over fault locator detected based on discharging light and localization method

Technical field

The present invention relates to a kind of insulator arc-over fault locator and localization method.

Background technology

In existing high voltage power transmisson system, insulator is absolutely necessary a part, and it makes high voltage isolate with ground and carry out mechanical stretching to power transmission line, serves and supports power transmission line and prevent electric current from returning the effect on ground.Along power transmission line, insulator quantity is very large, and kind is a lot, distributes very wide.The flashover ground faults such as its pollution flashover of insulator, wet sudden strain of a muscle, ice sudden strain of a muscle often occur.Once insulator arc-over occurs, isolating switch open circuit will cut off flashover current, can again close a floodgate afterwards.If reclosing is unsuccessful, need quick position faulty insulator, process is to make power supply reliable in time.Artificial line walking can locate flashover insulator, but insulator quantity is large, distribution area is wide, power off time is long, trouble-shooting point difficulty, and hunting engineering technical personnel labour intensity is large, there is the problem being difficult to quick position.Therefore be necessary to invent a kind of instrument and equipment, alleviate the work on the spot amount of fault inspection, increase work efficiency, accurately and timely find trouble spot, reduce because insulator chain flashover causes the erroneous judgement of tripping operation, shorten the time of Failure elimination.

Patent CN88211694.0(insulator chain flashover colour indicator) disclose a kind of high voltage circuit run in the colored indicating device of insulator chain flashover, it accurately can reflect the position of arcing fault point, and energy display color mark, tour personnel just can be observed on ground or helicopter, thus alleviate the work on the spot amount of fault inspection, increase work efficiency, accurately and timely find trouble spot.Patent CN02230975.6(flashover indicator for isolator of high-voltage power line) utilize short-circuit current sensor, the indicating member of activation pressure jetting system is carried out by insulator arc-over signal, colored ribbon to be sprayed outside chamber and to be hung out under indicator, staff need not step on bar, arcing fault point can be confirmed according to the colored ribbon of ejection on ground, decrease loss of outage and improve ultra-high-tension power transmission line reliability of operation.Patent 201020242577(magnetic induction insulator flashover fault indicator) utilize magnetic induction ring, warning weight etc. to make flashover current allow fault detector spray sign colored ribbon and to be hung out under indicator, staff need not step on bar, arcing fault point can be confirmed according to the colored ribbon of ejection on ground, line fault of electrical power system can be solved very well and find problem, for intensity of workers of increasing work efficiency, alleviate provides a kind of strong means, but when arcing fault occurs repeatedly insulator, colored ribbon/colored indicating device can not indicate repetition flashover number of times.

Patent 201020170112(insulator flashover grounding warning piezometer ring) utilize outside grading ring ring body and be provided with meltable eye-catching layer, in time there is flashover in insulator, electrical discharge arc makes meltable eye-catching layer fusing or burning, malfunction elimination person just can significantly see flashover position on ground, has saved a large amount of manpower and materials.Patent CN2399805(mono-kind can indicate the high-tension insulator of arcing fault) on high-tension insulator porcelain patticoat, apply organic and inorganic composite materials, form one deck coverlay; Its color and porcelain patticoat matrix color have obvious difference; After there is arcing fault, coverlay is burnt by high arc temperature, and it is obviously different from coverlay primary colors that porcelain patticoat color is exposed by institute, and indicate arcing fault with this; But artificial line walking workload is large.

Patent CN2121032(insulator twinkle displayer) adopt electromagnetic principle, utilize static iron core and attract armature to form flux circuit, sensing arcing fault signal, utilize and attract armature to drive display board action, sensing and driving is made to turn to one, solve and cause the power off time of short circuit long because of suspended insulator flashover, trouble-shooting point difficulty, the problem that hunting engineering technical personnel labour intensity is large.Patent CN2251144(disc type isolator flash over recording indicator) utilize striking circle that insulator arc-over electric current is directed to flow past electromagnetic energy converter, drive transmission indicating mechanism action record, conveniently look into rapidly out of order insulator chain, reduce the loss caused because of line outage, improve the reliability of whole High voltage output electric line.Patent CN2054909(insulator contamination point (flashover point) indicator) utilize be contained in transmission line of electricity insulator chain on the damming dish gone up most on a slice insulator cap flashover short-circuit current is incorporated into signal meter (SM), the fusible link of signal meter (SM) is fused, expose bright-coloured checkmark field, show obvious signal.But striking circle in this patent/dam dish may make the Electric Field Distribution on insulator chain change to some extent, and fusible link can only action once, repetition flashover can not be indicated, and inconvenience is changed.

Above patent all carries out flashover instruction in flashover insulator this locality, although to flashover instruction more directly with clear and definite, still need artificial line walking, operation maintenance person works amount is still very large.

Patent CN200620154557.1(transmission line insulator flashover malfunction monitoring locating device) comprise high current warning circuit, power supply and management circuit thereof, analog-to-digital conversion module, chip microprocessor, clock circuit and micro power consumption wireless communication module, described power supply and management circuit thereof are responsible for powering to whole device; Micro power consumption wireless communication module is connected with the communication interface of chip microprocessor, is responsible for transmission and the reception of data; Clock circuit is connected with chip microprocessor, as the real-time clock of device inside, to determine time of failure by I2C bus; In the modulating output of analog-to-digital conversion module sampling high current warning circuit and power supply and management circuit thereof, data are passed to microprocessor, flashover information wireless are sent to network by the voltage of battery after analog/digital conversion.The present invention can count, and alleviates the work on the spot amount of fault inspection, increases work efficiency, accurately and timely find trouble spot, reduces because insulator chain flashover causes the erroneous judgement of tripping operation, shortens the time of Failure elimination, significantly strengthen economic benefit.Patent CN2597997(flashover telemetering system for isolator for high-voltage transmission line) utilize the insulator arc-over information launcher of solar cell for supplying power to be connected by wireless communication networks with insulator arc-over information receiver, the information such as time of remote transmission high-voltage transmission line insulator flashover, place and flashover reason, fundamentally solve and rely on workman's line walking, step on the problem that flashover point searched by bar.Due to line insulator high number, this patent cost is too high, and insulator arc-over fault is not directly perceived.Further, use microelectronic circuit in patent, be vulnerable to the interference running on-the-spot corona and flashover transient state highfield etc., for strengthening the reliability of whole system, the EMC Design of system is complicated, and cost is high.

Therefore, be badly in need of a kind of energy directly perceived, the automatic detection of low cost judges the locating device of insulator arc-over fault.

Summary of the invention

In view of this, an object of the present invention is to provide a kind of insulator arc-over Fault Locating Method detected based on discharging light.

For achieving the above object, the invention provides following technical scheme: a kind of insulator arc-over Fault Locating Method detected based on discharging light, comprises the following steps: 1) utilize the camera head being arranged on each insulator place to gather each insulator surface illuminated message; 2) collection result in step 1) is analyzed, judge whether each insulator flashover electric discharge occurs; Its determination methods is: real-time analysis step 1) the middle each frame picture gathered, if the grey scale pixel value in some region in the picture of certain insulator is suddenly by secretly brightening and exceeding setting threshold values, dimmed again subsequently, just judge that this insulator generation flashover discharges; 3) when insulator generation arcing fault, flashover number of times is counted, and send failure message to office terminal; 4) office terminal receives the failure message that arcing fault insulator occurs, and shows the locating information of this insulator, starts alarm unit simultaneously and sends alerting signal to staff.

Further, the camera head described in step 1) of said method adopts Micro Energy Lose pinhole cameras.

Further, in said method, office terminal adopts mobile phone or network computer.

Two of object of the present invention is to provide a kind of insulator arc-over fault locator detected based on discharging light.

The described insulator arc-over fault locator detected based on discharging light comprises Micro Energy Lose pinhole cameras, solar cell and battery pack, image procossing single-chip microcomputer, counting unit, wireless sending module, image receiving unit, alarm unit; Described Micro Energy Lose pinhole cameras is used for Real-time Collection insulator arc-over discharging light; Described image procossing single-chip microcomputer is for controlling Micro Energy Lose pinhole cameras acquisition parameter and judging whether insulator flashover electric discharge occurs according to collection result analysis; Described counting unit is used for counting flashover number of times; Described wireless sending module is used for sending flashover picture to image receiving unit; Described solar cell and battery pack are used for powering to Micro Energy Lose pinhole cameras, image procossing single-chip microcomputer, counting unit and wireless sending module; Described image receiving unit for receiving and storing the flashover picture that wireless sending module sends, and starts alarm unit according to the information that receives and sends alerting signal.

Further, described wireless sending module adopts GPRS wireless module.

Further, described image receiving unit adopts mobile phone or network computer.

Further, described image procossing single-chip microcomputer can process the mobile object image collected, and sends prompting message by wireless sending module to image receiving unit.

Beneficial effect of the present invention is: 1. the present invention judges flashover, transmission flashover picture output alarm etc. by record a video to insulator surface and analyze, location rapidly and accurately directly perceived arcing fault insulator, solve the problem that hunting engineering technical personnel labour intensity is large, be difficult to quick position, improve work efficiency, decrease because insulator chain flashover causes the erroneous judgement of tripping operation, shorten the time of Failure elimination, significantly enhance economic benefit.2. the present invention adopts light to isolate, the Transient Electromagnetic interference that microelectronic circuit is subject to is little, functional reliability is high, and simultaneously the present invention can also increase the identification of mobile object and far control function in image processing Single Chip Microcomputer (SCM) program, plays the supervisory function bit such as electric power facilities anti-theft and icing.

Accompanying drawing explanation

In order to make object of the present invention, technical scheme and beneficial effect clearly, the invention provides following accompanying drawing and being described:

Fig. 1 is the structural representation of the insulator arc-over fault locator based on discharging light detection of the present invention;

Fig. 2 is the workflow diagram of the insulator arc-over Fault Locating Method based on discharging light detection of the present invention.

Embodiment

Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.

Fig. 1 is the structural representation of the insulator arc-over fault locator based on discharging light detection of the present invention, comprises Micro Energy Lose pinhole cameras, solar cell and battery pack, image procossing single-chip microcomputer, counting unit, wireless sending module, image receiving unit and alarm unit; For simplicity, depict only the Micro Energy Lose pinhole cameras at some electric power pylon places, solar cell and battery pack, image procossing single-chip microcomputer, counting unit and wireless sending module in the drawings, above-mentioned parts are also arranged at other each electric power pylon places, and image receiving unit and alarm unit are as remote equipment, quantity can select employing 1 image receiving unit and 1 alarm unit, can be arranged in the workplace of staff; Wherein, Micro Energy Lose pinhole cameras is used for each insulator arc-over discharging light of Real-time Collection, namely realizes the Real-Time Monitoring to insulator; Image procossing single-chip microcomputer is for controlling Micro Energy Lose pinhole cameras acquisition parameter and judging whether insulator flashover electric discharge occurs according to collection result analysis; Counting unit is used for counting flashover number of times, and wireless sending module is used for sending flashover picture to image receiving unit; Solar cell and battery pack are used for powering to Micro Energy Lose pinhole cameras, image procossing single-chip microcomputer, counting unit and wireless sending module; Image receiving unit for receive and store wireless sending module send flashover picture, display locating information, simultaneously start alarm unit send alerting signal.

Described Micro Energy Lose pinhole cameras can adopt one or more, be installed on different parts below the aerial earth wire of electric power pylon top, camera lens is downward, avoids the sun and the direct incident camera of thunder and lightning light, simultaneously the convenient electric discharge observing insulator surface from all angles.

First described image procossing single-chip microcomputer controls the parameters such as Micro Energy Lose pinhole cameras sampling rate, time shutter, then each frame picture of real-time analysis collection, if the grey scale pixel value in some region in picture is suddenly by secretly brightening and exceeding setting threshold values, dimmed again subsequently, just judge the electric discharge of insulator generation flashover and count in this locality; Concrete determination methods is: first, if become a fine day the sun, the possibility of insulator generation flashover is very low; Secondly, glass insulator and porcelain insulator the are reflected into camera light duration due to any surface finish is longer, and flashover lighting time interval is very short; Again, if at a distance because thunder and lightning is luminous, its brightness is darker; And the light reflected by insulator smooth finish surface presents little block hot spot and occurs curve-like arclight unlike insulator arc-over.

Described counting unit and wireless sending module are after the analysis of image processing single-chip microcomputer judges to obtain insulator generation flashover result, carry out this locality counting and send flashover picture to image receiving unit, wireless transmitter module can adopt the conventional wireless transport module comprising GPRS module.

Described solar cell and battery group capacity should be enough large, ensure to run without interruption when cloudy day or insulator arc-over at night.

Described image receiving unit for receive and store wireless sending module send flashover picture, show locating information to staff, simultaneously start alarm unit send alerting signal; Image receiving unit can adopt the terminal such as mobile phone or network computer, alarm unit can adopt audible-visual annunciator, staff can utilize the real-time monitoring of these terminal devices realization to insulator arc-over fault easily, and processes rapidly according to alerting signal.

As the improvement of the present embodiment, the recognition function to mobile object is increased in image processing Single Chip Microcomputer (SCM) program, image procossing single-chip microcomputer can process the mobile object image collected, and send prompting message by wireless sending module to image receiving unit, so just play the supervisory function bit such as electric power facilities anti-theft and icing.

What finally illustrate is, above preferred embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although by above preferred embodiment to invention has been detailed description, but those skilled in the art are to be understood that, various change can be made to it in the form and details, and not depart from claims of the present invention limited range.

Claims (2)

1., based on the insulator arc-over Fault Locating Method that discharging light detects, it is characterized in that: comprise the following steps:
1) camera head being arranged on each electric power pylon top is utilized to gather each insulator surface illuminated message;
2) to step 1) in collection result analyze, judge each insulator whether occur flashover electric discharge; Its determination methods is: real-time analysis step 1) the middle each frame picture gathered, if the grey scale pixel value in some region in the picture of certain insulator is suddenly by secretly brightening and exceeding setting threshold values, dimmed again subsequently, just judge that this insulator generation flashover discharges;
3) when insulator generation arcing fault, flashover number of times is counted, and send failure message to office terminal;
4) office terminal receives the failure message that arcing fault insulator occurs, and shows the locating information of this insulator, starts alarm unit simultaneously and sends alerting signal to staff;
In step 1) in, described camera head adopts Micro Energy Lose pinhole cameras;
Described office terminal adopts mobile phone or network computer.
2., based on the insulator arc-over fault locator that discharging light detects, it is characterized in that: comprise Micro Energy Lose pinhole cameras, solar cell and battery pack, image procossing single-chip microcomputer, counting unit, wireless sending module, image receiving unit and alarm unit; Described Micro Energy Lose pinhole cameras is used for Real-time Collection insulator arc-over discharging light; Described image procossing single-chip microcomputer is for controlling Micro Energy Lose pinhole cameras acquisition parameter and judging whether insulator flashover electric discharge occurs according to collection result analysis; Described counting unit is used for counting flashover number of times; Described wireless sending module is used for sending flashover picture to image receiving unit; Described solar cell and battery pack are used for powering to Micro Energy Lose pinhole cameras, image procossing single-chip microcomputer, counting unit and wireless sending module; Described image receiving unit for receiving and storing the flashover picture that wireless sending module sends, and starts alarm unit according to the information that receives; Described alarm unit is used for sending alerting signal to staff;
Described wireless sending module adopts GPRS wireless module;
Described image receiving unit adopts mobile phone or network computer;
Described image procossing single-chip microcomputer can also process the mobile object image collected, and sends prompting message by wireless sending module to image receiving unit.
CN201210477981.XA 2012-11-22 2012-11-22 Insulator arc-over fault positioning device and positioning method based on discharging light detection CN102928757B (en)

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CN103499774B (en) * 2013-07-09 2016-03-02 武汉双微电气科技有限公司 Transmission of electricity insulator arc-over in-service monitoring safety early warning device
CN103558505B (en) * 2013-10-23 2016-01-20 国家电网公司 Line flashover fault detection method is with Installed puts
CN103675603A (en) * 2013-12-03 2014-03-26 国网河南省电力公司商丘供电公司 Insulator breakdown indicator
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Address after: 400054 Banan District red light road, Chongqing, No. 69

Co-patentee after: Changshou Power Supply Branch of State Grid Chongqing Electric Power Company

Patentee after: Chongqing University of Technology

Co-patentee after: State Grid Corporation of China

Address before: 400054 Banan District red light road, Chongqing, No. 69

Co-patentee before: Changshou Power Supply Bureau of Chongqing Electric Power Corporation

Patentee before: Chongqing University of Technology

Co-patentee before: State Grid Corporation of China