CN102707198A - Feeder automation failure positioning method based on failure backcasting - Google Patents
Feeder automation failure positioning method based on failure backcasting Download PDFInfo
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Abstract
The invention discloses a feeder automation failure positioning method based on failure backcasting, which comprises the steps of: establishing a network topology according to a connecting relationship of switches and nodes, when failures occur, detecting that failed switches respectively search failures leftwards and rightwards according to the connecting relationship of the switches and the nodes; when searching that the node is a power supply point, backcasting to a failure point, setting a node state on a path as a failure; and finally, searching stages of nodes at two sides of all switches, if one node at two sides of one switch is in a failure state and other node is in a normal state, judging that the switch is a failed switch, and isolating the failed switch, and using the normal switch connected with the node in a failure stat at one side of the failed switch as an opposite isolation switch. According to the invention, the failure can be accurately and rapidly located, the problem of misjudgment or failure of the whole feeder automatic system due to failure of some switches is solved, and the dependence of the centralized feeder automatic mode to the communication reliability is reduced.
Description
Technical field
The invention belongs to electric system distribution automation field, be specifically related to the distribution feeder automation technology.
Background technology
Feeder automation (FA; Feeder automation) is meant automation equipment or the system of utilizing, keeps watch on the operation conditions of distribution line, in time find line fault; Rapid be out of order interval and fault section isolated of diagnosis, fast quick-recovery is to the power supply of non-fault section.
Feeder automation is a critical function in the distribution automation, and fault handling is the top priority of feeder automation, and distribution automation is the modern inexorable trend of electric system; Its main meaning is: when distribution is broken down, find fault section rapidly, fast the isolated fault section; In time recover non-fault zone user's power supply automatically; Therefore shortened power off time, reduced the power failure area, improved power supply reliability the user.Feeder automation has two kinds of implementations: local control mode and centralized control.Local control mode is the voltage-type implementation again, realizes through automatic circuit, and switch tripping when the feeder line dead electricity is pressed is closed block switch according to the examination of time delays order then, confirms fault section isolated fault and recover non-faulty section and supply power again at last.Centralized control adds main station system and realizes through on-load switch, FTU (feeder automation detection and control terminal).Detect electric current to differentiate fault by FTU, failure message is concentrated and is sent to main website, confirms fault section by main website, sends out the action of guidance command CS by main station system then, accomplishes fault isolation and recovers non-faulty section power supply.Centralized control accomplish localization of fault by computer system, so localization of fault is rapid, but electricity is sent in the automatic recovery of the non-fault section of Rapid Realization, and the switch motion number of times is few owing to introduced the power distribution automation main station system, and is also little to the impact of distribution system.Its shortcoming is, needs high-quality communication port and computing machine main website, and communication system is had relatively high expectations, and when line fault, requires corresponding information can in time be sent to the higher level station, and higher level's control information of sending of standing also can be sent to FTU rapidly.When some or part FTU break down or communicating interrupt, then main station system maybe fault location position or location mistake according to incomplete information.
Summary of the invention
Analyze based on the above, and solve the problems referred to above that exist in the prior art, the invention discloses a kind of feeder automation Fault Locating Method that pushes back based on fault.
The following technical scheme of the concrete employing of the present invention.
A kind of feeder automation Fault Locating Method that pushes back based on fault, this method is used for the localization of fault of the feed line automatization system of centralized communication, and this method comprises following steps:
(1) defines switch, nodal community, and annexation is set according to the real network topology;
(2), obtain real-time switch position signal, fault-signal based on original feed line automatization system;
(3) when arbitrary switch reports the over current fault signal; Feed line automatization system is a starting point with the switch that sends fault-signal; Carry out abort situation to this switch left and right sides both direction according to the annexation of node and switch respectively and search, check switch position signal, fault-signal, nodal community successively;
(4) if search nodal community when being power supply node, return,, will all node states be changed to malfunction along the road simultaneously up to the switch that sends the over current fault signal along former search pattern; If search endpoint node or switch is that gate-dividing state is then searched for end, maintain the original state along the node state on road, do not change;
(5) check all switch both sides node states of searching for; Like one of switch both sides node state is fault; One is non-fault, and then this switch is the switch of isolated fault, needs tripping operation; And the regular tap that does not report fault-signal that links to each other with the node of the non-malfunction of this breakdown switch one side is the switch of offside isolated fault, needs tripping operation;
(6) trip signal of the switch of isolated fault is handed down to the FTU to inductive switch by the feed line automatization system main website, and localization of fault, isolation are accomplished in the remote control tripping operation.
Fault Locating Method according to the fault of above step pushes back can not receive the influence of local problem, and still fault location fast and accurately, and definite disconnector has solved centralized feed line automatization system the communication reliability is depended on unduly.
Description of drawings
Fig. 1 is switch, node definition synoptic diagram;
Fig. 2 is switch, nodal community and connects generation network topology synoptic diagram;
Fig. 3 pushes back schematic flow sheet for fault.
Specific embodiments
Below according to Figure of description and combine specific embodiment to the further detailed presentations of concrete implementation method of the present invention in feed line automatization system.
This method can realize on the main website of centralized feed line automatization system or substation.
At first need define the attribute of switch and node.The switch attribute is divided into the power supply point switch, regular tap, branch line switch, interconnection switch; Nodal community is divided into power supply node, ordinary node and endpoint node (being the node of line end), and node state is divided into normal condition and malfunction, and node state is defaulted as normal condition during initialization.
Power supply point switch: first switch that is connected with power supply node.
Regular tap: the switch both sides all have switch to be connected to the switch of power supply node.
Branch line switch: have only a side to have switch to be connected to the switch of power supply node.
Interconnection switch: the connection switch of two power supplys, be responsible for the power supply of the non-fault zone of recovery, normal run time behaviour is for dividing the position.
Switch as shown in Figure 1 has unique switch number; Each switch has all defined connected left and right sides node, and node also has connected switch, has just generated network topology structure according to annexation; Node A as shown in Figure 2, I are power supply node; K switch 1, K8 are the power supply point switch, and K9, K10 are the branch line switch, and K2-K7 is a regular tap.
Can obtain real-time switch position signal, reach fault-signal based on original feed line automatization system; When line failure; The FTU that detects fault current can report main station system with fault-signal; Receive any one fault-signal when main station system and promptly start fault search that fault search is that starting point begins search respectively to the left and right with the FTU that detects fault-signal to inductive switch, inquires about the position signalling and the nodal community of each switch successively; Up to power supply node or the position of the switch is in the branch bit switch, or line end.As shown in Figure 3, the trouble spot is at the F point, and the FTU of K1-K5 switch detects fault current, and reports fault-signal, is example with K5 switch in scheming, shown in the solid arrow direction be the fault search direction, following searching route:
K5-> F-K6-G->K7 inquires about the position of the switch and nodal community successively, inquires K switch 7 and is the separating brake position, search finishes;
K5-> E-K9-J-K10-K inquires about the position of the switch and nodal community successively, to endpoint node, do not have other switches to be connected with it, the search end.
K5-> E-K4-D-K3-C-K2-B-K1-A searches power supply node, begins to push back, when searching power supply node, push back the starting point switch of search beginning by original route, and will all be set to malfunction by all nodes along the road.
Path A shown in Fig. 3 dotted arrow-> B-C-D-the E node state all is set to fault.
After all search is all accomplished, detect the left and right sides node state of all switches, if certain switch one side gusset is the fault state, the opposite side node is non-malfunction, and then the breakdown switch of this switch for needing to isolate needs tripping operation; The non-fault side (breakdown switch that above-mentioned needs are isolated; Two nodes about having, a side gusset is changed to malfunction, and the node of a side is a normal condition; Non-fault side just is meant this side of node of this normal condition) node be trouble spot (being the F node of K6); The regular tap that does not report fault-signal (K6) that is attached thereto also is the switch that needs isolated fault, needs tripping operation, and the branch line switch does not then need isolated operation.Like K5, K6 among Fig. 3 is the switch that needs isolated fault.The trip signal of disconnector is handed down to the FTU to inductive switch by main website, the remote control tripping operation.
Under above-mentioned situation; If the FTU device of K switch 3, K4 breaks down or communicating interrupt, then it can not correctly report failure message, and this moment, other switches correctly reported failure message can make main website normally start fault search; Searching route is still identical with above-mentioned example with the result; Though K3, K4 switch do not report fault, the Reflector of its node is put in the process that fault search pushes back, and still can guarantee the correctness of localization of fault.The conventional Fault Locating Method that only passes through to compare two adjacent switch failure messages; Break down or the situation of communicating interrupt for the FTU device of K switch 3, K4; Because a side has fault, the trouble-free node of a side has C, E, three points of F, can cause the mistake of localization of fault.If having solved, described method of the present invention have the fault detection capability of one or more FTU own to lose efficacy or communicating interrupt in the centralized feed line automatization system; Feed line automatization system can not the fault location position or the wrong defective in location, has reduced centralized feed line automatization system the communication reliability is depended on unduly.
Claims (2)
1. feeder automation Fault Locating Method that pushes back based on fault, this method is used for the localization of fault of the feed line automatization system of centralized communication, and this method comprises following steps:
(1) defines switch, nodal community, and annexation is set according to the real network topology;
(2), obtain real-time switch position signal, fault-signal based on original feed line automatization system;
(3) when arbitrary switch reports the over current fault signal; Feed line automatization system is a starting point with the switch that sends fault-signal; Carry out abort situation to this switch left and right sides both direction according to the annexation of node and switch respectively and search, check switch position signal, fault-signal, nodal community successively;
(4) if search nodal community when being power supply node, return,, will all node states be changed to malfunction along the road simultaneously up to the switch that sends the over current fault signal along former search pattern; If search endpoint node or switch is that gate-dividing state is then searched for end, maintain the original state along the node state on road, do not change;
(5) check all switch both sides node states of searching for; Like one of switch both sides node state is fault; One is non-fault, and then this switch is the switch of isolated fault, needs tripping operation; And the regular tap that does not report fault-signal that links to each other with the node of the non-malfunction of this breakdown switch one side is the switch of offside isolated fault, needs tripping operation;
(6) trip signal of the switch of isolated fault is handed down to the FTU to inductive switch by the feed line automatization system main website, and localization of fault, isolation are accomplished in the remote control tripping operation.
2. the feeder automation Fault Locating Method that pushes back based on fault according to claim 1 is characterized in that:
The switch attribute is divided into the power supply point switch, regular tap, branch line switch, interconnection switch; Nodal community is divided into power supply node, ordinary node and endpoint node, and node state is divided into normal condition and malfunction.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103150625A (en) * | 2012-10-22 | 2013-06-12 | 山东电力集团公司青岛供电公司 | Feeder terminal unit (FTU)-based power failure event information acquisition method and system |
| CN103761625A (en) * | 2014-02-13 | 2014-04-30 | 国家电网公司 | Outage management system based on information exchange bus and data processing method thereof |
| CN105067959A (en) * | 2015-09-15 | 2015-11-18 | 长沙威胜信息技术有限公司 | Fault positioning method under ring network power supply condition |
| CN105548801A (en) * | 2015-12-02 | 2016-05-04 | 南京四方亿能电力自动化有限公司 | Fault location method suitable for closed-loop operation of distribution network |
| CN106154115A (en) * | 2016-06-16 | 2016-11-23 | 上海交通大学 | Distributed feed line automatization terminal and distribution line failure judgement system, method |
| CN106597210A (en) * | 2016-09-29 | 2017-04-26 | 国网新疆电力公司 | Distribution network star map monitoring method based on SIM card state |
| CN108493928A (en) * | 2018-03-28 | 2018-09-04 | 国电南瑞科技股份有限公司 | Distributed feeder automation distribution line topology ad hoc network method |
| CN109655709A (en) * | 2018-10-19 | 2019-04-19 | 南京海兴电网技术有限公司 | A kind of Fault Locating Method based on distributed feeder automation |
| CN110221183A (en) * | 2019-07-11 | 2019-09-10 | 国网浙江省电力有限公司杭州市大江东供电公司 | Distribution Network Failure method for early warning and system towards non-power distribution automation overlay area |
| CN111123160A (en) * | 2019-12-02 | 2020-05-08 | 国网浙江省电力有限公司台州供电公司 | Fault positioning method and device for secondary circuit of switch cabinet mechanism |
| CN112018887A (en) * | 2020-08-18 | 2020-12-01 | 江苏省电力试验研究院有限公司 | Distribution network feeder automatic operation process supervision and analysis method |
| CN113030642A (en) * | 2021-03-03 | 2021-06-25 | 北京天能继保电力科技有限公司 | Automatic field test method and system for feeder automation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103150625B (en) * | 2012-10-22 | 2014-08-06 | 山东电力集团公司青岛供电公司 | Feeder terminal unit (FTU)-based power failure event information acquisition method and system |
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| CN105067959A (en) * | 2015-09-15 | 2015-11-18 | 长沙威胜信息技术有限公司 | Fault positioning method under ring network power supply condition |
| CN105067959B (en) * | 2015-09-15 | 2017-11-28 | 长沙威胜信息技术有限公司 | Fault Locating Method under the conditions of ring network power supply |
| CN105548801B (en) * | 2015-12-02 | 2018-12-07 | 南京四方亿能电力自动化有限公司 | Fault Locating Method suitable for power distribution network operation with closed ring |
| CN105548801A (en) * | 2015-12-02 | 2016-05-04 | 南京四方亿能电力自动化有限公司 | Fault location method suitable for closed-loop operation of distribution network |
| CN106154115A (en) * | 2016-06-16 | 2016-11-23 | 上海交通大学 | Distributed feed line automatization terminal and distribution line failure judgement system, method |
| CN106597210A (en) * | 2016-09-29 | 2017-04-26 | 国网新疆电力公司 | Distribution network star map monitoring method based on SIM card state |
| CN108493928A (en) * | 2018-03-28 | 2018-09-04 | 国电南瑞科技股份有限公司 | Distributed feeder automation distribution line topology ad hoc network method |
| CN108493928B (en) * | 2018-03-28 | 2021-11-05 | 国电南瑞科技股份有限公司 | Distributed feeder automation distribution line topology ad hoc network method |
| CN109655709A (en) * | 2018-10-19 | 2019-04-19 | 南京海兴电网技术有限公司 | A kind of Fault Locating Method based on distributed feeder automation |
| CN110221183A (en) * | 2019-07-11 | 2019-09-10 | 国网浙江省电力有限公司杭州市大江东供电公司 | Distribution Network Failure method for early warning and system towards non-power distribution automation overlay area |
| CN111123160A (en) * | 2019-12-02 | 2020-05-08 | 国网浙江省电力有限公司台州供电公司 | Fault positioning method and device for secondary circuit of switch cabinet mechanism |
| CN112018887A (en) * | 2020-08-18 | 2020-12-01 | 江苏省电力试验研究院有限公司 | Distribution network feeder automatic operation process supervision and analysis method |
| CN112018887B (en) * | 2020-08-18 | 2022-06-10 | 江苏省电力试验研究院有限公司 | Distribution network feeder automatic operation process supervision and analysis method |
| CN113030642A (en) * | 2021-03-03 | 2021-06-25 | 北京天能继保电力科技有限公司 | Automatic field test method and system for feeder automation |
| CN113030642B (en) * | 2021-03-03 | 2021-11-16 | 北京天能继保电力科技有限公司 | Automatic field test method and system for feeder automation |
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