CN106443362A - Power distribution network fault detection system - Google Patents

Power distribution network fault detection system Download PDF

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Publication number
CN106443362A
CN106443362A CN201611009071.3A CN201611009071A CN106443362A CN 106443362 A CN106443362 A CN 106443362A CN 201611009071 A CN201611009071 A CN 201611009071A CN 106443362 A CN106443362 A CN 106443362A
Authority
CN
China
Prior art keywords
fault
unit
output
input
distribution network
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.)
Pending
Application number
CN201611009071.3A
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Chinese (zh)
Inventor
顾孙珺
孙平
陆华俊
孙国庆
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.)
PUWANG ELECTRONIC CO Ltd HEFEI
Original Assignee
PUWANG ELECTRONIC CO Ltd HEFEI
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 PUWANG ELECTRONIC CO Ltd HEFEI filed Critical PUWANG ELECTRONIC CO Ltd HEFEI
Priority to CN201611009071.3A priority Critical patent/CN106443362A/en
Publication of CN106443362A publication Critical patent/CN106443362A/en
Pending legal-status Critical Current

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/08Locating faults in cables, transmission lines, or networks
    • G01R31/081Locating faults in cables, transmission lines, or networks according to type of conductors
    • G01R31/086Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution networks, i.e. with interconnected conductors
    • 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 provides a power distribution network fault detection system. The power distribution network fault detection system comprises a current transformer, a power distribution terminal, a photovoltaic conversion unit, an information collection unit, a data analysis unit, a fault level judgment unit, a fault positioning module, an alarming device and a fault display unit, wherein an output end of the current transformer is connected with an input end of the information collection unit through the photovoltaic conversion unit; the output end of the information collection unit is connected with the input end of the fault level judgment unit through the data analysis unit; the output end of the fault level judgment unit is connected with the input end of the fault positioning module; the output end of the fault positioning module is connected with the alarming device and the fault display unit respectively; and the output end of the power distribution terminal is connected with the input end of the information collection unit. The power distribution network fault detection system provided by the invention can be used for accurately positioning reasons of faults and fault points; the overhauling power-off time is shortened, and the utilization rate and operation reliability of equipment are improved; and meanwhile, the overhauling cost is reduced.

Description

A kind of distribution network fault detection system
Technical field
The present invention relates to electric power network technique field is and in particular to a kind of detection of distribution network failure of distribution network fault detection system is System.
Background technology
China's power distribution network has that line construction is complicated, the various changeable, spy such as faults frequent is complicated, maintenance workload is big of environment Levy.A certain section of distribution line breaks down, and needs to investigate fault generation position paragraph by paragraph, not only working strength is big, but also can prolong By mistake emergency repair time, affects power supply reliability, and in actual use, line voltage is to household electrical appliance, industrial automation equipment, medical The normal use of the electric network terminal equipment such as instrument and meter and service life have a very big impact.At present, the fluctuation of line voltage Larger, especially in rural area, the fluctuation of line voltage is bigger;Too high line voltage often shortens making of electric network terminal equipment With the life-span, sometimes even electric network terminal equipment can be made to burn;And too low line voltage is then likely to result in electric network terminal Equipment cisco unity malfunction.Currently used detecting system and its detection method, can only be rough fault coverage is detected, and Timely and effectively failure cause and trouble point can not be confirmed and be analyzed and processed.
Content of the invention
The technical problem to be solved in the present invention is to provide a kind of distribution network fault detection system of distribution network fault detection system, This system and method accurately can be positioned to the reason fault and trouble point, reduces the time that maintenance has a power failure, and raising sets Standby utilization rate and operational reliability, reduce the cost of overhaul simultaneously.
For solving above-mentioned technical problem, the present invention employs the following technical solutions:
A kind of distribution network fault detection system, including current transformer, distribution terminal, photoelectric conversion unit, information acquisition unit, Data analysis unit, fault level judging unit, fault location module, warning device and fault display unit;Described electric current is mutual The output end of sensor is connected with the input of information acquisition unit through photoelectric conversion unit, its output end through data analysis unit with The input of fault level judging unit is connected, and its output end is connected with the input of fault location module, fault location module Output end be connected with warning device, fault display unit respectively, the output end of described distribution terminal and information acquisition unit Input is connected.
Described photoelectric conversion unit is used for for the electric signal of acquisition being converted to optical signal, and the optical information that this is changed is carried out Storage and transmission.
Described fault location module is used for detecting fault-signal, and this fault-signal is carried out statistical analysis, determines fault Point position, and this abort situation point is carried out interim storage.
The invention has the beneficial effects as follows:Present invention achieves effectively being monitored to whole station secondary device running status, have Effect reduces artificial regular inspection project, reduces the maintenance power off time of equipment, improves reliability and operating efficiency.Can accurately judge simultaneously Whether power system is broken down or is had unusual service condition, therefore, it is possible to reliably carry out relay protection to power system.
Brief description
Fig. 1 is the system block diagram of the present invention.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.
As shown in figure 1, the distribution network fault detection system of the present embodiment, including current transformer 1, distribution terminal 3, photoelectricity Converting unit 2, information acquisition unit 4, data analysis unit 5, fault level judging unit 6, fault location module 7, dress of reporting to the police Put 8 and fault display unit 9;The input through photoelectric conversion unit 2 and information acquisition unit 4 for the output end of current transformer 1 It is connected, its output end is connected with the input of fault level judging unit 6 through data analysis unit 5, its output end is fixed with fault The input of position module 7 is connected, and the output end of fault location module 7 is connected with warning device 8, fault display unit 9 respectively, joins The output end of electric terminals 3 is connected with the input of information acquisition unit 4.
This photoelectric conversion unit 2 is used for for the electric signal of acquisition being converted to optical signal, and the optical information that this is changed is carried out Storage and transmission.Fault location module 7 is used for detecting fault-signal, and this fault-signal is carried out statistical analysis, determines fault Point position, and this abort situation point is carried out interim storage.
Operation principle:Current transformer 1 obtains current information from electrical network, and the electric signal obtaining is passed through opto-electronic conversion list Unit 2 is sent to information acquisition unit 4 after being converted to optical signal, information acquisition unit 4 collection the former of distribution terminal sets current data Information, this data message is sent collectively to data analysis unit 5 together with the current information collecting, this data analysis unit 5 The data collecting is compared, finds the numerical value being consistent therewith or being close, thus obtaining corresponding to optical signals Data level, the data of the fault level after differentiating and malfunction analysis procedure is sent jointly to fault location module 7, this fault Locating module 7 is analyzed positioning according to the data message receiving, and the information after positioning is entered by fault display unit Row display, when fault level exceeds preset range or fault location module 7 can not find abort situation, warning device report Alert, point out importance and the emergency of this fault.
Present invention achieves effectively being monitored to whole station secondary device running status, effectively reduce artificial regular inspection project, The maintenance power off time of reduction equipment, improves reliability and operating efficiency.Can accurately judge whether power system occurs event simultaneously Hinder or have unusual service condition, therefore, it is possible to reliably relay protection be carried out to power system.Those skilled in the art It should be appreciated that above embodiment is intended merely to the present invention is described, and it is not used as limitation of the invention, as long as Within the spirit of the present invention, the suitable change that above example is made and change all fall claimed Within the scope of.

Claims (3)

1. a kind of distribution network fault detection system it is characterised in that:Including current transformer(1), distribution terminal(3), photoelectricity turns Change unit(2), information acquisition unit(4), data analysis unit(5), fault level judging unit(6), fault location module (7), warning device(8)And fault display unit(9);Described current transformer(1)Output end through photoelectric conversion unit(2)With Information acquisition unit(4)Input be connected, its output end is through data analysis unit(5)With fault level judging unit(6)'s Input is connected, its output end and fault location module(7)Input be connected, fault location module(7)Output end respectively With warning device(8), fault display unit(9)It is connected, described distribution terminal(3)Output end and information acquisition unit(4)'s Input is connected.
2. distribution network fault detection system according to claim 1 it is characterised in that:Described photoelectric conversion unit(2)With In the electric signal of acquisition is converted to optical signal, and the optical information that this is changed is stored and is sent.
3. distribution network fault detection system according to claim 1 it is characterised in that:Described fault location module(7)With In detection fault-signal, and this fault-signal is carried out statistical analysis, localization of faults position, and this abort situation point is carried out Interim storage.
CN201611009071.3A 2016-11-16 2016-11-16 Power distribution network fault detection system Pending CN106443362A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201611009071.3A CN106443362A (en) 2016-11-16 2016-11-16 Power distribution network fault detection system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201611009071.3A CN106443362A (en) 2016-11-16 2016-11-16 Power distribution network fault detection system

Publications (1)

Publication Number Publication Date
CN106443362A true CN106443362A (en) 2017-02-22

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201611009071.3A Pending CN106443362A (en) 2016-11-16 2016-11-16 Power distribution network fault detection system

Country Status (1)

Country Link
CN (1) CN106443362A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107317718A (en) * 2016-08-19 2017-11-03 北京市燃气集团有限责任公司 A kind of O&M service management and management platform
CN107404152A (en) * 2017-08-09 2017-11-28 国网安徽省电力公司阜阳供电公司 A kind of intelligent power distribution network operation Measuring error integration apparatus
CN108896873A (en) * 2018-07-09 2018-11-27 武汉瑞莱保能源技术有限公司 A kind of remote monitoring of power transmission line and fault location system
CN109459664A (en) * 2018-12-26 2019-03-12 安徽网华信息科技有限公司 A kind of detection of distribution network failure and positioning analysis system
CN110166573A (en) * 2019-06-06 2019-08-23 大唐东营发电有限公司 Power plant protective relaying device tele-control system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105445594A (en) * 2016-01-25 2016-03-30 国网山东省电力公司高唐县供电公司 Power grid fault detection system
CN105891679A (en) * 2016-06-13 2016-08-24 姹や寒 Fault detection system and method for electric power grid

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105445594A (en) * 2016-01-25 2016-03-30 国网山东省电力公司高唐县供电公司 Power grid fault detection system
CN105891679A (en) * 2016-06-13 2016-08-24 姹や寒 Fault detection system and method for electric power grid

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107317718A (en) * 2016-08-19 2017-11-03 北京市燃气集团有限责任公司 A kind of O&M service management and management platform
CN107317718B (en) * 2016-08-19 2018-06-01 北京市燃气集团有限责任公司 A kind of O&M service management and management platform
CN107404152A (en) * 2017-08-09 2017-11-28 国网安徽省电力公司阜阳供电公司 A kind of intelligent power distribution network operation Measuring error integration apparatus
CN108896873A (en) * 2018-07-09 2018-11-27 武汉瑞莱保能源技术有限公司 A kind of remote monitoring of power transmission line and fault location system
CN109459664A (en) * 2018-12-26 2019-03-12 安徽网华信息科技有限公司 A kind of detection of distribution network failure and positioning analysis system
CN110166573A (en) * 2019-06-06 2019-08-23 大唐东营发电有限公司 Power plant protective relaying device tele-control system

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Application publication date: 20170222

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