CN106026052A - Fault processing method and device of feeder automation system under switchgear malfunction condition - Google Patents

Fault processing method and device of feeder automation system under switchgear malfunction condition Download PDF

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Publication number
CN106026052A
CN106026052A CN201610608401.4A CN201610608401A CN106026052A CN 106026052 A CN106026052 A CN 106026052A CN 201610608401 A CN201610608401 A CN 201610608401A CN 106026052 A CN106026052 A CN 106026052A
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CN
China
Prior art keywords
switch
distribution network
protection
failure
fault
Prior art date
Application number
CN201610608401.4A
Other languages
Chinese (zh)
Inventor
柳劲松
陈冉
黄亮亮
温彦军
顾园山
Original Assignee
国家电网公司
国网上海市电力公司
上海金智晟东电力科技有限公司
华东电力试验研究院有限公司
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.)
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Publication date
Application filed by 国家电网公司, 国网上海市电力公司, 上海金智晟东电力科技有限公司, 华东电力试验研究院有限公司 filed Critical 国家电网公司
Priority to CN201610608401.4A priority Critical patent/CN106026052A/en
Publication of CN106026052A publication Critical patent/CN106026052A/en

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/26Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured

Abstract

The invention relates to a fault processing method and device of a feeder automation system under a switchgear malfunction condition. The method comprises a step of judging whether a distribution network is failed or not, a step of determining a distribution network fault area, a step of controlling the protection switch in the distribution network fault area to trip, a step of judging whether the protection switch in the distribution network fault area has switchgear malfunction, a step of controlling a switch adjacent to the protection switch with the switchgear malfunction to trip, wherein the adjacent switch is outside the distribution network fault area, and a step of carrying out fault recovery through a recovery module. The device comprises a detection module which is connected to the distribution network and the protection switch, a protection module which is connected to the detection module and the protection switch, and the recovery module which is connected to the protection switch. Compared with the prior art, the method and the device have the advantages of high fault tolerance ability, strong automatic performance, simple method, and high robustness.

Description

The fault handling method of feed line automatization system and device in the case of switch failure
Technical field
The present invention relates to power system automatic field, in the case of especially relating to a kind of switch failure, feeder line is automatic The fault handling method of change system and device.
Background technology
The feeder automation of distribution network systems can be divided into distributed feeder automation and centralized feeder automation, works as distribution Net be short-circuited fault, singlephase earth fault time, feed line automatization system by distribution terminal detect fault, according to Feeder automation algorithm by main website or Distributed power terminal realize the automatically excision of fault, fault section automatic Isolation, the problem such as be automatically positioned of the automatic recovery of power supply in non-faulting region and trouble point, improve power supply reliability.
It is good that current feed line automatization system is all based on signal intelligence, real under the conditions of power equipment normal operation etc. Existing fault detect, Fault Isolation and fault recovery.But still suffer from actual distribution network systems substantial amounts of always Old power equipment, often occurs that protection switchs the situation of interim tripping, and current feed line automatization system is to switch The situation of tripping is without solution, and when switch occurs tripping, Distribution Network Failure cannot excise, now feeder automation system System enters blocking, no longer carries out Fault Isolation and fault recovery, finally causes transformer station's outlet switch tripping operation to make Whole piece distribution line dead electricity.
Summary of the invention
It is an object of the invention to provide a kind of fault-tolerant ability height for the problems referred to above, automatization's performance is strong, method is simple The fault handling method of feed line automatization system and device in the case of easy row and the high switch failure of robustness.
The purpose of the present invention can be achieved through the following technical solutions:
The fault handling method of feed line automatization system in the case of a kind of switch failure, is used for preventing protection in power distribution network Switch failure and the transformer station outlet switch tripping operation that causes, it is characterised in that described method comprises the following steps:
1) judge whether power distribution network breaks down, if then entering step 2), if otherwise returning step 1);
2) distribution network failure region is determined;
3) the protection switch trip in distribution network failure region is controlled;
4) judge whether the switch of the protection in distribution network failure region occurs switch failure, if then entering step 5), If otherwise returning step 1);
5) controlling to occur the adjacent switch tripping operation of the protection switch of switch failure, described adjacent switch is positioned at power distribution network Outside fault zone;
6) distribution network failure recovery is carried out;
7) carry out protection switch to recover.
Described step 5) particularly as follows:
51) the physical topology information of the protection switch that switch failure occurs is obtained;
52) there are all adjacent switches that the protection of switch failure switchs in inquiry;
53) judge whether adjacent switch is positioned at beyond distribution network failure region, and will determine that result is sent to protect mould Block, if then protection module controls adjacent switch tripping operation, if otherwise protection module does not control adjacent switch tripping operation.
Described step 7) particularly as follows:
71) judge that distribution network failure region is recovered the most completely, if then entering step 72), if otherwise returning step Rapid 6);
72) the protection switch request successively controlling tripping operation restores electricity;
73) judge the protection of tripping operation switchs whether full recovery is powered, if then showing that fault solves, if otherwise returning Return step 72).
The fault treating apparatus of feed line automatization system in the case of a kind of switch failure, it is characterised in that described device Including:
Detection module, is connected with power distribution network and protection switch respectively, is used for detecting distribution network failure, detects switch and refuse Move, judge distribution network failure scope and obtain the physical topology information of protection switch;
Protection module, is connected with detection module and protection switch respectively, is used for controlling to protect switch trip;
Recover module, be connected with power distribution network, protection module and protection switch respectively, be used for recovering distribution network failure, Judge that distribution network failure region is recovered state and controls to protect switch to restore electricity.
Described detection module includes:
Distribution network failure detector unit, is connected with power distribution network, is used for detecting distribution network failure and determining distribution network failure Scope;
Protection switch detector unit, is connected with protection switch, for detecting switch failure and obtaining the thing of protection switch Reason topology information.
Described recovery module includes:
Fault recovery unit, is connected with power distribution network, is used for recovering distribution network failure;
Recover judging unit, be connected with fault recovery unit and protection module respectively, be used for judging distribution network failure district Territory is recovered the most completely;
Switch recovery unit, is connected with recovery judging unit and protection switch respectively, is recovering sentencing of judging unit Response when disconnected result is for being, restores electricity for controlling protection switch according to the feedback result recovering judging unit.
Compared with prior art, the method have the advantages that
(1) by controlling to occur the protection adjacent switch trip of switch of switch failure to reach to expand fault model Enclosing, it is ensured that the purpose of failure removal, it can be ensured that Fault Isolation, fault-tolerant ability is high.
(2) this method just can complete from distribution network failure to fault recovery a series of dynamic without artificial monitoring Making, automatization's performance is strong, it is simple to realize.
(3) complete the most only need to control protect switch trip can realize, method is simple, save people Power and power cost.
(4) owing to expanding fault coverage, it is hereby ensured that the circuit that will not break down does not has isolated Situation, has ensured stablizing of whole power distribution network, and robustness is high.
(5) whole device is provided with detection module, protection module and recovers 3 modules of module, and the degree of modularity is high, Convenient to operate and maintenance.
Accompanying drawing explanation
Fig. 1 is the method flow diagram of the present invention;
Fig. 2 is the schematic diagram that only one of which protection switch occurs switch failure;
Fig. 3 is the schematic diagram having two protection switches that switch failure occurs.
Detailed description of the invention
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.The present embodiment is with the technology of the present invention side Implement premised on case, give detailed embodiment and concrete operating process, but the protection model of the present invention Enclose and be not limited to following embodiment.
The present embodiment provides fault handling method and the device of feed line automatization system in the case of a kind of switch failure, should Method realizes based on feeder automation.In power distribution network runs, according to the topology information of feed line automatization system, Every protection switch has adjacent switch, according to the algorithm of feed line automatization system, if certain switch is in fault zone, The then adjacent switch of its both sides, inevitable side is in fault zone, and opposite side is in non-faulting region.
The fault handling method of feed line automatization system in the case of a kind of switch failure has been obtained according to above-mentioned principle, as Shown in Fig. 1, the method comprises the following steps:
1) judge whether power distribution network breaks down, if then entering step 2), if otherwise returning step 1);
2) distribution network failure region is determined;
3) the protection switch trip in distribution network failure region is controlled;
4) judge whether the switch of the protection in distribution network failure region occurs switch failure, if then entering step 5), If otherwise returning step 1);
5) controlling to occur the adjacent switch tripping operation of the protection switch of switch failure, described adjacent switch is positioned at power distribution network Outside fault zone:
51) the physical topology information of the protection switch that switch failure occurs is obtained;
52) there are all adjacent switches that the protection of switch failure switchs in inquiry;
53) judge whether adjacent switch is positioned at beyond distribution network failure region, and will determine that result is sent to protect mould Block, if then protection module controls adjacent switch tripping operation, if otherwise protection module does not control adjacent switch tripping operation;
6) distribution network failure recovery is carried out;
7) carry out protection switch to recover:
71) judge that distribution network failure region is recovered the most completely, if then entering step 72), if otherwise returning step Rapid 6);
72) the protection switch request successively controlling tripping operation restores electricity;
73) judge the protection of tripping operation switchs whether full recovery is powered, if then showing that fault solves, if otherwise returning Return step 72).
In order to realize said method, the present embodiment additionally provides feed line automatization system in the case of a kind of switch failure Fault treating apparatus, this device includes: detection module, respectively with power distribution network and protection switch be connected, be used for examining It is measured electric network fault, detection switch failure, judges distribution network failure scope and obtain the physical topology letter of protection switch Breath;Protection module, is connected with detection module and protection switch respectively, is used for controlling to protect switch trip;Recover mould Block, is connected with power distribution network, protection module and protection switch respectively, is used for recovering distribution network failure, judging power distribution network Fault zone is recovered state and controls to protect switch to restore electricity.
Wherein, detection module includes: distribution network failure detector unit, is connected with power distribution network, is used for detecting power distribution network Fault and determine distribution network failure scope;Protection switch detector unit, is connected with protection switch, is used for detecting switch Tripping and the physical topology information of acquisition protection switch.Recover module to include: fault recovery unit, with power distribution network even Connect, be used for recovering distribution network failure;Recover judging unit, be connected with fault recovery unit and protection module respectively, For judging that distribution network failure region is recovered the most completely;Switch recovery unit, respectively with recovery judging unit and guarantor Protect switch to connect, the response when the judged result of recovery judging unit is for being, for according to recovering the anti-of judging unit Feedback output control protection switch restores electricity.
The present embodiment uses 8 FTU imitate on-the-spot line to be tested, simulated field feeder automation Fault detect, Fault Isolation and the recovery process in non-faulting region.The experiment system built with the DTU of laboratory As a example by system, being artificially introduced switch fault in the different position of the switch in experimentation, system can be by the present invention The method in the expansion Fault Isolation region proposed realizes isolation and the recovery in non-faulting region in region, trouble point.
As in figure 2 it is shown, A1-A8 is load switch, A6 is contact, and wherein A3 exists switch failure.S1、 S2 is protection exit switch.Fault occurs between A3 and A4, and system first determines whether A3 and A4 switch region Between be fault zone, after A3 tripping being detected, system extract A3 adjacent switch information, find A2 exist In non-faulting region, system controls A2 and has tripped Fault Isolation.A6 is asked to restore electricity after A4 Fault Isolation. A2-A4 section is expanded as by original A3-A4 section in fault zone, and the non-faulting section of A2-A3 is also included into faulty section Dead electricity.
As it is shown on figure 3, A1-A8 is load switch, A6 is contact, and wherein A3 and A4 all exists switch failure. S1, S2 are protection exit switch.Fault occurs between A3 and A4, and system first determines whether that A3 and A4 opens Closing interval is fault zone, and after A3 tripping being detected, system extracts the adjacent switch information of A3, finds A2 In non-faulting region, system controls A2 tripping operation, and after A4 tripping being detected, system extracts the adjacent of A4 Switching information, A5 is in non-faulting region in discovery, and system controls A5 tripping operation, asks A6 extensive after A5 Fault Isolation Multiple power supply.A2-A5 section is expanded as by original A3-A4 section in fault zone.
Test result indicate that the method in the expansion Fault Isolation region that the present invention proposes can effectively strengthen feeder line automatic Change fault-tolerant ability in performing process of fault isolation, reduce artificial participation and coordinate to control, improve the robustness of system.

Claims (6)

1. a fault handling method for feed line automatization system in the case of switch failure, in being used for preventing power distribution network Protection switch failure and the transformer station outlet switch tripping operation that causes, it is characterised in that described method comprises the following steps:
1) judge whether power distribution network breaks down, if then entering step 2), if otherwise returning step 1);
2) distribution network failure region is determined;
3) the protection switch trip in distribution network failure region is controlled;
4) judge whether the switch of the protection in distribution network failure region occurs switch failure, if then entering step 5), If otherwise returning step 1);
5) controlling to occur the adjacent switch tripping operation of the protection switch of switch failure, described adjacent switch is positioned at power distribution network Outside fault zone;
6) distribution network failure recovery is carried out;
7) carry out protection switch to recover.
The fault handling method of feed line automatization system in the case of switch failure the most according to claim 1, It is characterized in that, described step 5) particularly as follows:
51) the physical topology information of the protection switch that switch failure occurs is obtained;
52) there are all adjacent switches that the protection of switch failure switchs in inquiry;
53) judge whether adjacent switch is positioned at beyond distribution network failure region, and will determine that result is sent to protect mould Block, if then protection module controls adjacent switch tripping operation, if otherwise protection module does not control adjacent switch tripping operation.
The fault handling method of feed line automatization system in the case of switch failure the most according to claim 1, It is characterized in that, described step 7) particularly as follows:
71) judge that distribution network failure region is recovered the most completely, if then entering step 72), if otherwise returning step Rapid 6);
72) the protection switch request successively controlling tripping operation restores electricity;
73) judge the protection of tripping operation switchs whether full recovery is powered, if then showing that fault solves, if otherwise returning Return step 72).
4. the fault treating apparatus of feed line automatization system in the case of a switch failure, it is characterised in that described Device includes:
Detection module, is connected with power distribution network and protection switch respectively, is used for detecting distribution network failure, detects switch and refuse Move, judge distribution network failure scope and obtain the physical topology information of protection switch;
Protection module, is connected with detection module and protection switch respectively, is used for controlling to protect switch trip;
Recover module, be connected with power distribution network, protection module and protection switch respectively, be used for recovering distribution network failure, Judge that distribution network failure region is recovered state and controls to protect switch to restore electricity.
The fault treating apparatus of feed line automatization system in the case of switch failure the most according to claim 4, It is characterized in that, described detection module includes:
Distribution network failure detector unit, is connected with power distribution network, is used for detecting distribution network failure and determining distribution network failure Scope;
Protection switch detector unit, is connected with protection switch, for detecting switch failure and obtaining the thing of protection switch Reason topology information.
The fault treating apparatus of feed line automatization system in the case of switch failure the most according to claim 4, It is characterized in that, described recovery module includes:
Fault recovery unit, is connected with power distribution network, is used for recovering distribution network failure;
Recover judging unit, be connected with fault recovery unit and protection module respectively, be used for judging distribution network failure district Territory is recovered the most completely;
Switch recovery unit, is connected with recovery judging unit and protection switch, respectively in the judgement recovering judging unit Respond when result is for being, restore electricity for controlling protection switch according to the feedback result recovering judging unit.
CN201610608401.4A 2016-07-28 2016-07-28 Fault processing method and device of feeder automation system under switchgear malfunction condition CN106026052A (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN201610608401.4A CN106026052A (en) 2016-07-28 2016-07-28 Fault processing method and device of feeder automation system under switchgear malfunction condition

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002084656A (en) * 2000-09-04 2002-03-22 Hitachi Ltd Malfunction preventing circuit for grounding protector
CN101409442A (en) * 2008-11-25 2009-04-15 中国南方电网有限责任公司 Rapid line backup protection method with reliable selection based on wide area measuring system
CN102005746A (en) * 2010-11-30 2011-04-06 南京南瑞继保电气有限公司 Method based on topology protection of distributing network
CN104734143A (en) * 2013-12-23 2015-06-24 国家电网公司 Failure processing method and device of voltage and current hybrid line

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002084656A (en) * 2000-09-04 2002-03-22 Hitachi Ltd Malfunction preventing circuit for grounding protector
CN101409442A (en) * 2008-11-25 2009-04-15 中国南方电网有限责任公司 Rapid line backup protection method with reliable selection based on wide area measuring system
CN102005746A (en) * 2010-11-30 2011-04-06 南京南瑞继保电气有限公司 Method based on topology protection of distributing network
CN104734143A (en) * 2013-12-23 2015-06-24 国家电网公司 Failure processing method and device of voltage and current hybrid line

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