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

Info

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
Authority
CN
China
Prior art keywords
insulator
arc
flashover
over
positioning
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201210477981.XA
Other languages
Chinese (zh)
Other versions
CN102928757A (en
Inventor
陈新岗
古亮
李山
黄会贤
汪能文
陈鹏
邹文平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Changshou Power Supply Branch of State Grid Chongqing Electric Power Company
State Grid Corp of China SGCC
Chongqing University of Technology
Original Assignee
CHANGSHOU POWER SUPPLY BUREAU OF CHONGQING ELECTRIC POWER CORP
State Grid Corp of China SGCC
Chongqing University of Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by CHANGSHOU POWER SUPPLY BUREAU OF CHONGQING ELECTRIC POWER CORP, State Grid Corp of China SGCC, Chongqing University of Technology filed Critical CHANGSHOU POWER SUPPLY BUREAU OF CHONGQING ELECTRIC POWER CORP
Priority to CN201210477981.XA priority Critical patent/CN102928757B/en
Publication of CN102928757A publication Critical patent/CN102928757A/en
Application granted granted Critical
Publication of CN102928757B publication Critical patent/CN102928757B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00Systems supporting electrical power generation, transmission or distribution
    • Y04S10/50Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
    • Y04S10/52Outage or fault management, e.g. fault detection or location

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 Active CN102928757B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210477981.XA CN102928757B (en) 2012-11-22 2012-11-22 Insulator arc-over fault positioning device and positioning method based on discharging light detection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210477981.XA CN102928757B (en) 2012-11-22 2012-11-22 Insulator arc-over fault positioning device and positioning method based on discharging light detection

Publications (2)

Publication Number Publication Date
CN102928757A CN102928757A (en) 2013-02-13
CN102928757B true CN102928757B (en) 2015-07-22

Family

ID=47643601

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201210477981.XA Active CN102928757B (en) 2012-11-22 2012-11-22 Insulator arc-over fault positioning device and positioning method based on discharging light detection

Country Status (1)

Country Link
CN (1) CN102928757B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103278745A (en) * 2013-05-31 2013-09-04 国家电网公司 Line fault live-action collecting and processing method based on wireless mobile terminal
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
CN105182179A (en) * 2015-08-24 2015-12-23 国网天津市电力公司 Intelligent remote visual fault indication system
CN105093067A (en) * 2015-08-24 2015-11-25 国网天津市电力公司 Intelligent remote fault indicating system
CN105277856B (en) * 2015-11-20 2018-01-09 重庆理工大学 Cross-Linked Polythene Cable Joints discharge fault monitoring system and Fault Classification
CN108037411A (en) * 2017-12-04 2018-05-15 国网江苏省电力有限公司检修分公司 A kind of transmission line of electricity hidden danger electric discharge method for early warning
CN110146795A (en) * 2019-06-05 2019-08-20 国网黑龙江省电力有限公司电力科学研究院 The device that a kind of pair of insulator arc-over failure is detected automatically
CN110221186A (en) * 2019-06-13 2019-09-10 国网山东省电力公司青州市供电公司 A kind of darkroom alternating-current voltage resistance test device and test method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201628558U (en) * 2008-12-23 2010-11-10 胡广生 Digital online monitoring system and monitoring device for power transmission lines
CN201689150U (en) * 2010-04-02 2010-12-29 李柏松 High-voltage power transmission insulator arc-over accurate positioning device
CN201946099U (en) * 2010-05-05 2011-08-24 无锡科尔华电子有限公司 Comprehensively monitored data acquiring device for solar zigbee wireless power transmission line

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0738010B2 (en) * 1992-11-09 1995-04-26 東北電力株式会社 Flash display
JPH06324104A (en) * 1993-05-12 1994-11-25 Kyushu Denki Seizo Kk Method and device for detecting breakage of power line insulator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201628558U (en) * 2008-12-23 2010-11-10 胡广生 Digital online monitoring system and monitoring device for power transmission lines
CN201689150U (en) * 2010-04-02 2010-12-29 李柏松 High-voltage power transmission insulator arc-over accurate positioning device
CN201946099U (en) * 2010-05-05 2011-08-24 无锡科尔华电子有限公司 Comprehensively monitored data acquiring device for solar zigbee wireless power transmission line

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
低气压下绝缘子串直流污闪放电过程;张志劲 等;《电工技术学报》;20090430;第24卷(第04期);第30-35,47页 *
紫外成像仪在750kV输变电系统中的应用;周斌 等;《电网与清洁能源》;20090228;第25卷(第02期);第32-35页 *

Also Published As

Publication number Publication date
CN102928757A (en) 2013-02-13

Similar Documents

Publication Publication Date Title
CN102928757B (en) Insulator arc-over fault positioning device and positioning method based on discharging light detection
CN104092750B (en) A kind of flood control rainwater feelings wireless monitor station and its monitoring method
CN101969229B (en) On-line monitoring method for secondary circuit
CN201765296U (en) Magnetic induction insulator flashover fault indicator
CN102411119A (en) Intelligent monitoring device for temperature and insulation state of 330KV high-voltage cable in hydropower station
CN102116823A (en) System for automatically judging and positioning faults of automatic blocking and continuous railway power lines in railway distribution network
CN202025062U (en) Small neutral earthed system fault locating device based on 3G (The 3rd Generation Telecommunication) communication network
CN205038280U (en) Direct current current conversion station earthing pole on -line monitoring system
CN202025060U (en) Automatic fault determining and positioning system of railway distribution network automatic blocking and continuous transmission lines
CN203798958U (en) Power distribution overhead type monitoring indicator
CN202939261U (en) Insulator arcing fault positioning device based on discharging light detection
CN201233385Y (en) Insulator dirt on-line detecting instrument
CN202393866U (en) Hydropower station 330kV high voltage cable temperature and insulating state intelligent monitoring device
CN203444066U (en) Fault indication apparatus of overhead line
CN207718635U (en) A kind of traffic signals facility staff realtime monitoring system
CN205942370U (en) Solar energy thing networking bugZapper
CN201974667U (en) Novel 10kV power cable fault signal collector
CN107945559A (en) A kind of traffic signals facility staff realtime monitoring system and method
CN211429564U (en) Intelligent energy-saving remote control system for street lamp
CN107688137A (en) A kind of sensor-based high voltage cable failure automatic monitoring system and its method
CN203932832U (en) A kind of inspection robot for high-voltage line
CN2893815Y (en) Wireless electric line trouble indicating system
CN210015208U (en) Crank arm opening and closing in-place monitoring system of high-voltage switchgear
CN202513674U (en) Remote alarm device for abnormal current leakage of arrestor
CN205408043U (en) Transmission line monitor platform

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
GR01 Patent grant
C14 Grant of patent or utility model
CP01 Change in the name or title of a patent holder

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

CP01 Change in the name or title of a patent holder