CN103513157A - Fault locating method of smart power distribution network in distribution line multi-power-supply-point environment - Google Patents
Fault locating method of smart power distribution network in distribution line multi-power-supply-point environment Download PDFInfo
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- CN103513157A CN103513157A CN201310334491.9A CN201310334491A CN103513157A CN 103513157 A CN103513157 A CN 103513157A CN 201310334491 A CN201310334491 A CN 201310334491A CN 103513157 A CN103513157 A CN 103513157A
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- Y—GENERAL 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS 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
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
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- Locating Faults (AREA)
Abstract
The invention belongs to the field of electric power system distribution automation, in particular to a fault locating method of a smart power distribution network in a distribution line multi-power-supply-point environment. The fault locating method of the smart power distribution network in the distribution line multi-power-supply-point environment comprises the steps that (1) a distribution automation master station system builds memory topology of a primary device of the smart power distribution network through a power distribution network topology model; (2) a terminal device judges the direction of fault current, the information of the direction of the fault current and a fault signal are together sent to the distribution automation master station system; (3) the distribution automation master station system determines a fault area and a boundary device according to the fault signal sent by the terminal device and the information, sent by the terminal device, of the direction of the fault current sent by the terminal device. The fault locating method of the smart power distribution network in the distribution line multi-power-supply-point environment supports multi-thread call, the distribution automation master station system can carry out fault locating judgment on different faults of a plurality of feeder lines at the same time, the built power distribution network topology model of the distribution automation master station system can be used, repeated modeling is not needed, so that investment and maintenance cost are greatly reduced, and the fault locating method of the smart power distribution network in the distribution line multi-power-supply-point environment well adapts to changes of operation modes of the smart power distribution network, can accomplish fault locating on the situation that part of fault information is lost, and has good fault tolerance.
Description
Technical field
The invention belongs to electric system power distribution automation field, relate in particular to the Fault Locating Method of a kind of intelligent distribution network under many power supply points of distribution line environment.
Background technology
In China, build in the process of intelligent grid, the application scale of distributed power source/microgrid constantly expands, power distribution network changes to the horizontal networks that spreads all over many power supply points from vertical single supply point radiant type network, traditional FEEDER AUTOMATION cannot adapt to the fault handling requirement under many power supply points of distribution line condition, need a kind of effective Fault Locating Method badly, when multiple feed trend two-way flow network breaks down, accurately locate fault zone, for the operations such as follow-up fault isolation ,Fei fault zone restores electricity provide scientific basis.
Summary of the invention
For above-mentioned problems of the prior art, the invention provides the Fault Locating Method of a kind of intelligent distribution network under many power supply points of distribution line environment.The object of the invention is for after distribution network access distributed power source, distribution line forms the environment of multiple feed, trend becomes two-way flow from unidirectional, cannot use traditional FEEDER AUTOMATION to carry out the problem of fault handling, proposed to locate the method for fault zone under many power supply points of circuit environment, realize when distribution network breaks down, power distribution automation main station system can be located fault zone fast.
For achieving the above object, the present invention is achieved in that
The Fault Locating Method of intelligent distribution network under many power supply points of distribution line environment, comprises the following steps:
(1), by power distribution network topological model, power distribution automation main station system is set up the internal memory topology of power distribution network primary equipment;
(2) terminal device judge fault current direction and together with fault-signal on deliver to main station system;
(3) power distribution automation main station system, according to the fault-signal sending in terminal and fault current direction, is determined fault zone and edge device;
(4) support that multithreading calls, power distribution automation main station system can carry out localization of fault judgement to the different faults of many feeder lines simultaneously.
The concrete operation method of described step (3) is: according to the annexation between switch on distribution line, the switch that fault current detected of take is border, distribution line is divided into a plurality of regions, judge that each zone boundary switch fault sense of current is flow into this region or flow out this region, region checks one by one, Ruo Mou only has in region the fault current of inflow, and there is no the fault current ，Ze Gai region of flowing out, is place, trouble spot section.
Power distribution network topological model in described step (1) need meet following main points: all devices the correct topological connection relation of describing between these equipment of containing distribution network system.
Distribution terminal in described step (2) need be delivered to main station system in time by fault current direction and fault-signal.
In described and step (3), on the correct basis of topological model, power distribution automation main station system can be determined distribution line failure region under many power supply points electric power thus supplied according to fault current direction and fault-signal.
In described step (4), power distribution automation main station system must be supported multithreading, and by multithreading, computing method is called, and when could support multipoint fault, processes.
Feature of the present invention is:
The inventive method is passed through power distribution network topological model in power distribution automation main station system, set up the internal memory topology of power distribution network primary equipment, utilize feeder fault signal and the fault current direction on distribution network terminal Real-time Collection, sent, drive power distribution automation main station system to locate fast fault zone by internal memory topological model, for the operations such as follow-up fault isolation ,Fei fault zone restores electricity provide scientific basis.
Method tool of the present invention has the following advantages and beneficial effect:
The power distribution network topological model that 1, can utilize the power distribution automation main station system of having built up, does not need repetition modeling, can greatly reduce investment and maintenance cost;
2, clear, the accuracy of judgement of the inventive method principle, is easy to study and grasps, and the variation of the distribution network method of operation is had to very strong adaptability;
3, the inventive method, the in the situation that of partial fault loss of learning, also can complete localization of fault, has stronger fault-tolerance;
4, support that multithreading calls, can process the fault of many different feeder lines simultaneously.
The present invention proposes after distribution network access distributed power source, distribution line forms under the environment of multiple feed, by fault-signal and fault current direction, accurately locate the straightforward procedure of fault zone, by practical application, show, described method is correctly effective, can adapt to the feeder automation demand under distribution line multiple feed environment.
Embodiment
The present invention is the Fault Locating Method of a kind of intelligent distribution network under many power supply points of distribution line environment, and the method comprises the following steps:
1,, by power distribution network topological model, power distribution automation main station system is set up the internal memory topology of power distribution network primary equipment;
2, terminal device judge fault current direction and together with fault-signal on deliver to main station system;
3, power distribution automation main station system, according to the fault-signal sending in terminal and fault current direction, is determined fault zone and edge device.Concrete grammar is: according to the annexation between switch on distribution line, the switch that fault current detected of take is border, distribution line is divided into a plurality of regions, judge that each zone boundary switch fault sense of current is flow into this region or flow out this region, region checks one by one, Ruo Mou only has in region the fault current of inflow, and there is no the fault current ，Ze Gai region of flowing out, is place, trouble spot section.
4, this method supports that multithreading calls, and power distribution automation main station system can carry out localization of fault judgement to the different faults of many feeder lines simultaneously.
Power distribution network topological model in described step 1 need meet following main points: all devices the correct topological connection relation of describing between these equipment of containing distribution network system.
Distribution terminal in described step 2 need be delivered to main station system in time by fault current direction and fault-signal.
In described step 3, on the correct basis of topological model, described power distribution automation main station system can be determined distribution line failure region under many power supply points electric power thus supplied according to fault current direction and fault-signal.
In described step 4, power distribution automation main station system must be supported multithreading, and by multithreading, computing method is called, and when could support multipoint fault, processes.
Claims (6)
1. the Fault Locating Method of intelligent distribution network under many power supply points of distribution line environment, is characterized in that: comprise the following steps:
(1), by power distribution network topological model, power distribution automation main station system is set up the internal memory topology of power distribution network primary equipment;
(2) terminal device judge fault current direction and together with fault-signal on deliver to main station system;
(3) power distribution automation main station system, according to the fault-signal sending in terminal and fault current direction, is determined fault zone and edge device;
(4) support that multithreading calls, power distribution automation main station system can carry out localization of fault judgement to the different faults of many feeder lines simultaneously.
2. the Fault Locating Method of intelligent distribution network according to claim 1 under many power supply points of distribution line environment, it is characterized in that: the concrete operation method of described step (3) is: according to the annexation between switch on distribution line, the switch that fault current detected of take is border, distribution line is divided into a plurality of regions, judge that each zone boundary switch fault sense of current is flow into this region or flow out this region, region checks one by one, Ruo Mou only has in region the fault current of inflow, and there is no the fault current that flows out, Ze Gai region is place, trouble spot section.
3. the Fault Locating Method of intelligent distribution network according to claim 1 under many power supply points of distribution line environment, is characterized in that: the power distribution network topological model in described step (1) need meet following main points: all devices the correct topological connection relation of describing between these equipment of containing distribution network system.
4. the Fault Locating Method of intelligent distribution network according to claim 1 under many power supply points of distribution line environment, is characterized in that: the distribution terminal in described step (2) need be delivered to main station system in time by fault current direction and fault-signal.
5. the Fault Locating Method of intelligent distribution network according to claim 1 under many power supply points of distribution line environment, it is characterized in that: in described and step (3), on the correct basis of topological model, power distribution automation main station system can be determined distribution line failure region under many power supply points electric power thus supplied according to fault current direction and fault-signal.
6. the Fault Locating Method of intelligent distribution network according to claim 1 under many power supply points of distribution line environment, it is characterized in that: in described step (4), power distribution automation main station system must be supported multithreading, and by multithreading, computing method are called, when could support multipoint fault, processed.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104049178A (en) * | 2014-06-28 | 2014-09-17 | 国家电网公司 | Fault locating method and system of active power distribution network |
| CN104316840A (en) * | 2014-11-07 | 2015-01-28 | 国家电网公司 | Positioning method and device for fault branches of mixed multi-branch nodes of power distribution network |
| CN104360230A (en) * | 2014-11-07 | 2015-02-18 | 国家电网公司 | Method and device for locating fault branches of active multi-branch nodes of power distribution network |
| CN104361451A (en) * | 2014-11-15 | 2015-02-18 | 国网河南省电力公司开封供电公司 | Power distribution network control method based on mass data |
| CN104360228A (en) * | 2014-11-07 | 2015-02-18 | 华北电力大学 | Method for improving positioning of fault section of power distribution network including distributed power supply through directional elements |
| CN105606957A (en) * | 2015-12-23 | 2016-05-25 | 国网福建省电力有限公司 | Grid fault research and judge method based on fault indicator and public/specific transformer |
| CN107329051A (en) * | 2017-09-01 | 2017-11-07 | 三河市鼎科远图科技有限公司 | The power network distribution fault decision method and device of a kind of topology adaptation |
| CN110514965A (en) * | 2019-09-06 | 2019-11-29 | 昆明理工大学 | A kind of multiple-limb electrical power distribution network fault location method using sets match method |
| CN110988591A (en) * | 2019-11-26 | 2020-04-10 | 国电南瑞南京控制***有限公司 | Power distribution network fault positioning method and device based on transient recording type fault indicator |
| CN116505493A (en) * | 2023-06-28 | 2023-07-28 | 南京荣泰电气自动化有限公司 | Distributed fault positioning and isolating method for power distribution network multi-power supply condition |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104049178A (en) * | 2014-06-28 | 2014-09-17 | 国家电网公司 | Fault locating method and system of active power distribution network |
| CN104316840A (en) * | 2014-11-07 | 2015-01-28 | 国家电网公司 | Positioning method and device for fault branches of mixed multi-branch nodes of power distribution network |
| CN104360230A (en) * | 2014-11-07 | 2015-02-18 | 国家电网公司 | Method and device for locating fault branches of active multi-branch nodes of power distribution network |
| CN104360228A (en) * | 2014-11-07 | 2015-02-18 | 华北电力大学 | Method for improving positioning of fault section of power distribution network including distributed power supply through directional elements |
| CN104361451A (en) * | 2014-11-15 | 2015-02-18 | 国网河南省电力公司开封供电公司 | Power distribution network control method based on mass data |
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| CN107329051A (en) * | 2017-09-01 | 2017-11-07 | 三河市鼎科远图科技有限公司 | The power network distribution fault decision method and device of a kind of topology adaptation |
| CN110514965A (en) * | 2019-09-06 | 2019-11-29 | 昆明理工大学 | A kind of multiple-limb electrical power distribution network fault location method using sets match method |
| CN110514965B (en) * | 2019-09-06 | 2021-10-08 | 昆明理工大学 | Multi-branch power distribution network fault positioning method using set matching method |
| CN110988591A (en) * | 2019-11-26 | 2020-04-10 | 国电南瑞南京控制***有限公司 | Power distribution network fault positioning method and device based on transient recording type fault indicator |
| CN116505493A (en) * | 2023-06-28 | 2023-07-28 | 南京荣泰电气自动化有限公司 | Distributed fault positioning and isolating method for power distribution network multi-power supply condition |
| CN116505493B (en) * | 2023-06-28 | 2023-09-15 | 南京荣泰电气自动化有限公司 | Distributed fault positioning and isolating method for power distribution network multi-power supply condition |
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Application publication date: 20140115 |