CN203069726U - Rural power grid power distribution line fault location and isolation system - Google Patents

Rural power grid power distribution line fault location and isolation system Download PDF

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Publication number
CN203069726U
CN203069726U CN2012206797080U CN201220679708U CN203069726U CN 203069726 U CN203069726 U CN 203069726U CN 2012206797080 U CN2012206797080 U CN 2012206797080U CN 201220679708 U CN201220679708 U CN 201220679708U CN 203069726 U CN203069726 U CN 203069726U
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CN
China
Prior art keywords
distribution line
rural power
fault
isolation
rural
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.)
Expired - Fee Related
Application number
CN2012206797080U
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Chinese (zh)
Inventor
李智敏
吕利敏
杨凤民
刘祖喜
张朝平
钟浩
吕建民
王国忠
许万鹏
关红锦
金先涛
朱莉
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.)
Zhengzhou Xiangyu Science and Technology Development Co., Ltd.
State Grid Corp of China SGCC
Zhengzhou Power Supply Co of Henan Electric Power Co
Zhengzhou Huali Information Technology Co Ltd
Original Assignee
ZHENGZHOU XIANGYU SCIENCE AND TECHNOLOGY DEVELOPMENT Co Ltd
State Grid Corp of China SGCC
Zhengzhou Power Supply Co of Henan Electric Power Co
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 ZHENGZHOU XIANGYU SCIENCE AND TECHNOLOGY DEVELOPMENT Co Ltd, State Grid Corp of China SGCC, Zhengzhou Power Supply Co of Henan Electric Power Co filed Critical ZHENGZHOU XIANGYU SCIENCE AND TECHNOLOGY DEVELOPMENT Co Ltd
Priority to CN2012206797080U priority Critical patent/CN203069726U/en
Application granted granted Critical
Publication of CN203069726U publication Critical patent/CN203069726U/en
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    • 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 utility model discloses a rural power grid power distribution line fault location and isolation system. The rural power grid power distribution line fault location and isolation system includes post-mounted intelligent switches and fault indicators. The post-mounted intelligent switches are installed on main lines and primary branch lines of rural power grid power distribution lines; the fault indicators are installed at secondary branch lines of the rural power grid power distribution lines; the intelligent switches and the fault indicators transmit information to a centralized control center in a GPRS wireless transmission mode; and the centralized control center transmits related fault information to communication terminals of related personnel through a data center in a wireless communication mode. According to the rural power grid power distribution line fault location and isolation system of the utility model, through the organic integration of the intelligent switches and the fault indicators, rural power grid integrated fault location and isolation can be realized; when faults occur on the main lines and the branch lines, the rural power grid power distribution line fault location and isolation system will send messages instantly to related maintenance personnel, and therefore, fault handling process can be accelerated.

Description

Rural power grids distribution line failure location and shielding system
Technical field:
The utility model relates to a kind of 12~40.5kV rural power grids electrical power distribution automatization system, particularly relates to a kind of rural power grids distribution line failure location and shielding system.
Background technology:
Single radiant rays rate is all more than 70% in the present rural power distribution net, a lot of rural power grids circuits at county level are near 90%, having only the sub-fraction circuit is the looped network circuit of handing in hand, and line length is all at 15-20km, and branched line is many, however block switch and the branch switch negligible amounts of installing, has automatic isolated fault in the rural power grids circuit, the automation equipment of service restoration is less, and rate of breakdown is higher in the rural power grids circuit, and this present situation has been hindered development of rural economy and growth in the living standard.
Break down in 6-10kV rural power grids overhead transmission line, will cause transformer station's outlet switch trip, if nature of trouble is nonvolatil, transformer station overlaps and will get nowhere, and some fault effects whole piece 10kV distribution lines then occur and has a power failure, and causes large-area power-cuts; And the trouble spot is difficult to search, and the time of fixing a breakdown and restore electricity is long, causes power off time long, and the fault zone is not subjected to the fault zone influence and can not normal power supply yet simultaneously.
The utility model content:
Technical problem to be solved in the utility model is: overcome the deficiencies in the prior art, provide a kind of reasonable in design, data transmission reliable and can accurately determine rural power grids distribution line failure location and the shielding system of abort situation rapidly.
The technical solution of the utility model is: a kind of rural power grids distribution line failure location and shielding system, contain intelligent switch and fault detector on the post, intelligent switch is installed on the backbone and main branch of rural power grids distribution line on the described post, described fault detector is installed in the less important branch of rural power grids distribution line, described intelligent switch and fault detector all adopt wireless transmission method that information is sent to the centralized control center, and described centralized control center utilizes wireless communication mode that relevant failure message is sent on related personnel's the communicating terminal by data center.
Described intelligent switch and fault detector all adopt the GPRS transmission mode that information is sent to described centralized control center by the APN private network.Described centralized control center sends to relevant failure message on described related personnel's the communicating terminal with short message mode by GSM.The quantity of intelligent switch and fault detector is more than one on the described post.
The beneficial effects of the utility model are:
1, the utility model has been realized the integrated localization of fault of rural power grids and isolation by the organically blending of intelligent switch and fault detector, and when backbone, when branch line breaks down, system all can send SMS notification associated maintenance personnel immediately, accelerates fault treating procedure.
2, the utility model adopts APN private network transmission data, data safety and reliability; In addition, the real time data information that the centralized control center can circuit can also show relevant real time data in modes such as pie chart, rod figure, forms, and figure can online printing or timed print, uses very convenient.
3, the utility model can also query history deposit data, historical events, historical failure location isolate recovery information, and data query is easy, quick, is convenient in time discharge fault.
4, the utility model utilizes wireless network transmissions, the trouble spot of back fast detecting and location power distribution network short circuit and single-phase earthing in a few minutes can take place in fault, shorten the patrol time of trouble spot so greatly, make the maintenance personal rush towards the scene rapidly, fix a breakdown, recover energising, improve the reliability of power supply greatly.
5, the utility model is reasonable in design, data transmission is reliable and can accurately determine abort situation rapidly, and its usable range is wide, and it is good to promote the back economic benefit.
Description of drawings:
Fig. 1 is the structure principle chart of rural power grids distribution line failure location and shielding system;
Fig. 2 is rural power grids radial circuit synoptic diagram;
Fig. 3 is rural power grids looped network conspectus.
Embodiment:
Embodiment: referring to Fig. 1, Fig. 2 and Fig. 3, among the figure, hollow square frame represents the state that isolating switch divides, and filled box represents the state that isolating switch closes, and open circles represents fault detector.
Rural power grids distribution line failure location and shielding system contain intelligent switch and fault detector on the post, wherein: intelligent switch is installed on the backbone and main branch of rural power grids distribution line on the post, fault detector is installed in the less important branch of rural power grids distribution line, intelligent switch and fault detector all adopt the GPRS transmission mode that information is sent to the centralized control center by the APN private network, and described centralized control center utilizes wireless communication mode that relevant failure message is sent on related personnel's the communicating terminal by data center.
The quantity of intelligent switch and fault detector is more than one on the post, determines according to length and the bifurcated degree of rural power grids distribution line.
Radial circuit backbone fault, as shown in Figure 2, with the explanation of breaking down of 4,5 intervals:
(1) 4, line failure between 5,1DL, 5DL experience fault current simultaneously, because the 5DL time is set to 0.35S, 1DL time definite value is 0.5S, thus the 5DL circuit breaker trip, the isolated fault zone.
(2) intelligent switch equipment sends to master supervisory system to failure message, and master supervisory system is alarmed, and sends the SMS notification related personnel.
Radial circuit main branch connections road fault isolation adopts the 0S quick-break, and as shown in Figure 2, breaking down with No. 3 branched lines is example explanation:
(1) No. 3 breaks down in the branch circuit breaker lower end, 4DL, and 1DL experiences fault current, and the 4DL time is set to 0S, 4DL tripping operation, isolated fault zone.
(2) intelligent switch equipment sends to master supervisory system to failure message, and master supervisory system is alarmed, and sends the SMS notification related personnel.
The less important branched line fault isolation of radial circuit, as shown in Figure 2, breaking down with No. 12 branched lines is example explanation:
(1) No. 12 breaks down in the branch lower end, and the fault detector that is installed in No. 12 branch lines detects fault, and the board turning action.
(2) fault detector sends to master supervisory system to failure message, and master supervisory system is alarmed, and sends the SMS notification related personnel.
The service restoration principle of looped network circuit, explanation as shown in Figure 3, Fig. 3 is a looped network hand in hand, disposes intelligent switch on 5 important actors altogether, CB1, CB2 are that transformer station goes out the protective device that wiretap is furnished with among the figure.S1, S2, S3, S4, S5 are that (wherein S1, S2, S3, S4, S5 are block switch to intelligent switch on the post, and S3 is interconnection switch.
The process that produces fault isolation and non-fault zone service restoration from fault is described below by L2 section generation permanent fault.
(1) fault forever takes place when the L2 section: S1 section breaker protection tripping operation; S2 both sides decompression picks up counting; The one-sided decompression of S3 interconnection switch picks up counting.
(2) S2 both sides decompression is delayed time and is arrived, S2 decompression separating brake.The one-sided decompression of S3 interconnection switch is delayed time and is arrived, and S3 closes a floodgate.
(3) S2 is one-sided has when calendering to close a floodgate, and accelerates tripping operation and locking combined floodgate on the fault but be combined in.The isolation of L2 faulty section and the service restoration of non-faulty section have so been finished.
(4) intelligent switch equipment sends to master supervisory system to failure message, and the SMS notification related personnel is alarmed and sent to master supervisory system.
The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment does.

Claims (4)

1. a rural power grids distribution line failure is located and shielding system, contain intelligent switch and fault detector on the post, it is characterized in that: intelligent switch is installed on the backbone and main branch of rural power grids distribution line on the described post, described fault detector is installed in the less important branch of rural power grids distribution line, described intelligent switch and fault detector all adopt wireless transmission method that information is sent to the centralized control center, and described centralized control center utilizes wireless communication mode that relevant failure message is sent on related personnel's the communicating terminal by data center.
2. rural power grids distribution line failure according to claim 1 is located and shielding system, and it is characterized in that: described intelligent switch and fault detector all adopt the GPRS transmission mode that information is sent to described centralized control center by the APN private network.
3. rural power grids distribution line failure according to claim 1 is located and shielding system, and it is characterized in that: described centralized control center sends to relevant failure message on described related personnel's the communicating terminal with short message mode by GSM.
4. according to claim 1 or 2 or 3 described rural power grids distribution line failure location and shielding systems, it is characterized in that: the quantity of intelligent switch and fault detector is more than one on the described post.
CN2012206797080U 2012-12-11 2012-12-11 Rural power grid power distribution line fault location and isolation system Expired - Fee Related CN203069726U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012206797080U CN203069726U (en) 2012-12-11 2012-12-11 Rural power grid power distribution line fault location and isolation system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012206797080U CN203069726U (en) 2012-12-11 2012-12-11 Rural power grid power distribution line fault location and isolation system

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105527540A (en) * 2016-01-06 2016-04-27 云南电网公司大理供电局 Fault indicator and distributed intelligent terminal matched overhead distribution network fault positioning method
CN106655128A (en) * 2016-12-27 2017-05-10 国网浙江省电力公司 Partial power off control system of distribution network and distribution network system
CN106711974A (en) * 2016-12-27 2017-05-24 国网浙江省电力公司 Local power failure control system for power distribution network, and power distribution network system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105527540A (en) * 2016-01-06 2016-04-27 云南电网公司大理供电局 Fault indicator and distributed intelligent terminal matched overhead distribution network fault positioning method
CN105527540B (en) * 2016-01-06 2018-08-10 云南电网公司大理供电局 A kind of fault detector and the matched overhead distribution network fault positioning method of distributed intelligent terminal
CN106655128A (en) * 2016-12-27 2017-05-10 国网浙江省电力公司 Partial power off control system of distribution network and distribution network system
CN106711974A (en) * 2016-12-27 2017-05-24 国网浙江省电力公司 Local power failure control system for power distribution network, and power distribution network system
CN106655128B (en) * 2016-12-27 2019-10-08 国网浙江省电力公司 A kind of power distribution network part power-off control system and distribution network system

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GR01 Patent grant
C14 Grant of patent or utility model
TR01 Transfer of patent right

Effective date of registration: 20130923

Address after: 100033 West Chang'an Avenue, Beijing, No. 86, No.

Patentee after: State Grid Corporation of China

Patentee after: Zhengzhou Huali Information Technology Co., Ltd.

Patentee after: Zhengzhou Xiangyu Science and Technology Development Co., Ltd.

Patentee after: Henan Electric Power Company Zhengzhou Power Supply Branch

Address before: 450001 Henan Province, Zhengzhou city high tech Development Zone No. 5 cypress

Patentee before: Zhengzhou Xiangyu Science and Technology Development Co., Ltd.

Patentee before: Henan Electric Power Company Zhengzhou Power Supply Branch

Patentee before: State Grid Corporation of China

C41 Transfer of patent application or patent right or utility model
ASS Succession or assignment of patent right

Owner name: ZHENGZHOU HUALI INFORMATION TECHNOLOGY CO., LTD. Z

Free format text: FORMER OWNER: HENAN ELECTRIC POWER COMPANY ZHENGZHOU POWER SUPPLY BRANCH STATE ELECTRIC NET CROP.

Effective date: 20130923

Owner name: STATE ELECTRIC NET CROP.

Free format text: FORMER OWNER: ZHENGZHOU XIANGYU SCIENCE AND TECHNOLOGY DEVELOPMENT CO., LTD.

Effective date: 20130923

COR Change of bibliographic data

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130717

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CF01 Termination of patent right due to non-payment of annual fee