CN105488742A - Method for filtering misreported signals of fault indicator - Google Patents
Method for filtering misreported signals of fault indicator Download PDFInfo
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Abstract
The invention relates to a method for filtering misreported signals of a fault indicator. The method comprises: a distribution automation master station system establishes a memory topology of distribution network primary equipment via a distribution network topology model; when the fault indicator reports turnover signals, the distribution master station system filters dither signals according to a set time delay wait; the distribution automation master station system filters misreported remote signals in combination with a fault current and a load current when fault signals are generated; the distribution master station system judges that the fault is a transient fault or a permanent fault according to the change of a ground electric field before and after the fault; and the distribution master station system analyzes that the fault signals are misreported or missing via a topological relation in combination with signals of front and back fault indicators. The method for filtering misreported signals of a fault indicator can prevent trigger fault judgment of fault jitter and frequent mis-sending, improve the accuracy of fault judgment, improve the efficiency and the intelligence in the fault repair process and greatly improve the repairing efficiency.
Description
Technical field
The present invention relates to electric power system power distribution automatic field, particularly a kind of filter method of fault detector false positive signal.
Background technology
Along with the continuous propelling of system for distribution network of power system Construction and practical function thereof, fault detector disposes installation on a large scale as two distant terminals.The data access of fault detector and fault location function shorten repair personnel's trouble shooting time effectively, improve scene rush to repair efficiency.Fault detector data access advances the fusion of multivariate data, solve distribution " blind tune " problem, get final product state and the fault of Real-Time Monitoring distribution network, automatically fault section is determined, and find out trouble spot, thus can Timeliness coverage get rid of line fault, shorten fault correction time, save a large amount of human and material resources.
Fault detector major deployments is on overhead transmission line, and long-term wind and weather, the working time added is longer, there will be therefore refer to performance own and battery problems, causes therefore refers to that signal is reported by mistake, shakes, failed to report.Like this, therefore refer to the inaccurate of signal, the accuracy that fault is studied and judged must be caused, thus the work efficiency of impact repairing.Therefore a kind of filter method of effective fault detector false positive signal is needed badly for distribution network failure, fully comprehensive therefore refer to the digital & analog signal amount sent, and utilize the topological connection relation between fault detector to analyze, pre-service is carried out to remote signalling actuating signal, filters wrong report, dither signal.Thus improve the accuracy studied and judged of fault, be increased in high efficiency in breakdown repair process with intelligent, raising is joined and is robbed work efficiency.
Summary of the invention
The object of the present invention is to provide a kind of filter method of fault detector false positive signal, to overcome the defect existed in prior art.
For achieving the above object, technical scheme of the present invention is: a kind of filter method based on fault detector false positive signal, realizes in accordance with the following steps:
Step S1: power distribution automation main station system, by power distribution network topological model, sets up the internal memory topology of power distribution network primary equipment;
Step S2: when fault detector reports board turning signal, described distribution main station system carries out delay according to Preset Time to be waited for, and the fault indication signal of involution in this Preset Time is judged to be dither signal, and filters this dither signal;
Step S3: fault current when described power distribution automation main website uploads described fault indication signal in conjunction with described fault detector and load current, filters sending out a remote signals by mistake;
Step S4: described power distribution automation main station system uploads the change to earth electric field of fault indication signal according to described fault detector, failure judgement is transient fault or permanent fault;
Step S5: described power distribution automation main station system is by the topological relation in described power distribution network topological model, and in conjunction with the signal that fault detector described before and after described fault detector reporting fault indicator signal sends, judge whether this fault detector signal is reported by mistake or fail to report;
Step S6: described power distribution automation main station system carries out pre-service and filter analysis to the fault indication signal that multiple fault detector is uploaded simultaneously.
In an embodiment of the present invention, in described step S1, described power distribution network topological model contains the fault detector of distribution network system, and describes the topological connection relation in distribution network system between fault detector.
In an embodiment of the present invention, in described step S2, dither signal described in the filtering of described power distribution automation main station system, no longer studies and judges.
In an embodiment of the present invention, in described step S3, whether described power distribution automation main station system occurs significantly uprushing by fault current during the remote signals that judges to receive described fault detector and send and load current, uprushes, then filter sending out a remote signals by mistake if occur.
In an embodiment of the present invention, in described step S4, described power distribution automation main station system judge described fault detector upload before and after fault indication signal to earth electric field whether existence significantly declines, and after presetting the test duration through one, described power distribution automation main station system recalls test to described fault detector to earth electric field, whether go up according to earth electric field, judgement is transient fault or permanent fault.
In an embodiment of the present invention, in described step S5, the remote signals that described power distribution automation main website uploads in conjunction with described fault detector, judges whether this fault detector signal is reported by mistake or fail to report.
In an embodiment of the present invention, in described step S6, described power distribution automation main station system supports multithreading, and is called computing method by multithreading, processes the fault indication signal that multiple fault detector is uploaded simultaneously.
Compared to prior art, the present invention has following beneficial effect: the filter method of a kind of fault detector false positive signal proposed by the invention, the power distribution network topological model of the power distribution automation main station system built up can be utilized, do not need repetition modeling, greatly can reduce investment and maintenance cost.The remote signals of fault detector is analyzed in conjunction with remote measurement amount by the method, has filtered the signal of wrong report, has improve the accuracy that fault is studied and judged, thus the high efficiency that adds in breakdown repair process is with intelligent, and raising is joined and robbed work efficiency.Support multithreading calls, and the filtration that simultaneously can process multiple fault detector judges process.Shown by practical application, the method is correctly effective, avoids the fail result studying and judging out a large amount of mistake because of false positive signal, improves the accuracy that fault is studied and judged, can greatly improve distribution scheduling and join and rob work efficiency.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of the filter method of a kind of fault detector false positive signal in the present invention.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is specifically described.
Signal wrong report, shake etc. for fault detector in power distribution network affect the problem that fault is studied and judged, the present invention proposes a kind of filter method based on fault detector false positive signal, realize when receiving therefore refer to remote signals, power distribution automation main station system can the correctness of active analysis signal, pre-service is carried out to signal, filter the signal of wrong report, shake, realize in accordance with the following steps:
Step S1: power distribution automation main station system, by power distribution network topological model, sets up the internal memory topology of power distribution network primary equipment;
Step S2: when fault detector reports board turning signal, distribution main station system carries out delay according to Preset Time to be waited for, and be dither signal by the fault detector board turning signal determining of involution in this Preset Time (general 2 minutes), and this dither signal is filtered;
Step S3: fault current when power distribution automation main website uploads fault indication signal in conjunction with fault detector and load current, filters sending out a remote signals by mistake;
Step S4: power distribution automation main station system uploads the change to earth electric field of fault indication signal according to fault detector, failure judgement is transient fault or permanent fault;
Step S5: power distribution automation main station system by the topological relation in power distribution network topological model, and in conjunction with the signal that fault detector before and after fault detector reporting fault indicator signal sends, judges whether this fault detector signal is reported by mistake or fail to report;
Step S6: power distribution automation main station system carries out pre-service and filter analysis to the fault indication signal that multiple fault detector is uploaded simultaneously.
Further, in the present embodiment, in step sl, power distribution network topological model contains the fault detector of distribution network system, and describes the topological connection relation in distribution network system between fault detector.In the present embodiment, the model created need meet following main points: contain the fault detector of distribution network system and correct describe these therefore topological connection relation between referring to.
Further, in the present embodiment, in step s 2, power distribution automation main station system filtering dither signal, no longer studies and judges.In the present embodiment, receive therefore after referring to the signal of action, carry out delay disposal, if distribution main station system receives slot signal within the delay stand-by period, being then judged to be dither signal, filtering this thus refer to signal, no longer study and judge.
Further, in the present embodiment, in step s3, power distribution automation main station system by judge receive fault detector send remote signals time fault current and load current whether occur significantly uprushing, uprush if occur, then filter sending out remote signals by mistake.In the present embodiment, when fault occurs, therefore refer to except remote signalling action, fault current or load current also should occur and significantly uprush, and during remote signalling false triggering, do not have this phenomenon, verify out the correctness of remote signals according to curent change.
Further, in the present embodiment, in step s 4 which, power distribution automation main station system failure judgement indicator upload before and after fault indication signal to earth electric field whether existence significantly declines, and after presetting the test duration through one, power distribution automation main station system recalls test to fault detector to earth electric field, and whether go up according to earth electric field, judgement is transient fault or permanent fault.In the present embodiment, distribution main station system according to before and after fault to carry out failure judgement to the change of earth electric field be transient fault or permanent fault.Fault occur time, obvious decline is had to earth electric field, after 2 minutes distribution main station system to thus refer to survey is called together to earth electric field, whether go up according to earth electric field, judge it is transient fault or permanent fault.
Further, in the present embodiment, in step s 5, the remote signals that power distribution automation main website uploads in conjunction with fault detector, judges whether this fault detector signal is reported by mistake or fail to report.In the present embodiment, distribution main station system, by topological connection relation, in conjunction with the remote signals of front and back fault detector, is analyzed this therefore refers to whether signal is reported by mistake or fail to report.
Further, in the present embodiment, in step s 6, power distribution automation main station system supports multithreading, and is called computing method by multithreading, processes the fault indication signal that multiple fault detector is uploaded simultaneously.In the present embodiment, power distribution automation main station system must support multithreading, and is called computing method by multithreading, could support that the multiple therefore signal referred to processes simultaneously.
Be more than preferred embodiment of the present invention, all changes done according to technical solution of the present invention, when the function produced does not exceed the scope of technical solution of the present invention, all belong to protection scope of the present invention.
Claims (7)
1. based on a filter method for fault detector false positive signal, it is characterized in that, realize in accordance with the following steps:
Step S1: power distribution automation main station system, by power distribution network topological model, sets up the internal memory topology of power distribution network primary equipment;
Step S2: when fault detector reports board turning signal, described distribution main station system carries out delay according to Preset Time to be waited for, and the fault indication signal of involution in this Preset Time is judged to be dither signal, and filters this dither signal;
Step S3: fault current when described power distribution automation main website uploads described fault indication signal in conjunction with described fault detector and load current, filters sending out a remote signals by mistake;
Step S4: described power distribution automation main station system uploads the change to earth electric field of fault indication signal according to described fault detector, failure judgement is transient fault or permanent fault;
Step S5: described power distribution automation main station system is by the topological relation in described power distribution network topological model, and in conjunction with the signal that fault detector described before and after described fault detector reporting fault indicator signal sends, judge whether this fault detector signal is reported by mistake or fail to report;
Step S6: described power distribution automation main station system carries out pre-service and filter analysis to the fault indication signal that multiple fault detector is uploaded simultaneously.
2. a kind of filter method based on fault detector false positive signal according to claim 1, it is characterized in that, in described step S1, described power distribution network topological model contains the fault detector of distribution network system, and describes the topological connection relation in distribution network system between fault detector.
3. a kind of filter method based on fault detector false positive signal according to claim 1, is characterized in that, in described step S2, dither signal described in the filtering of described power distribution automation main station system, no longer studies and judges.
4. a kind of filter method based on fault detector false positive signal according to claim 1, it is characterized in that, in described step S3, described power distribution automation main station system by judge receive described fault detector send remote signals time fault current and load current whether occur significantly uprushing, uprush if occur, then filter sending out remote signals by mistake.
5. a kind of filter method based on fault detector false positive signal according to claim 1, it is characterized in that, in described step S4, described power distribution automation main station system judge described fault detector upload before and after fault indication signal to earth electric field whether existence significantly declines, and after presetting the test duration through one, described power distribution automation main station system recalls test to described fault detector to earth electric field, whether go up according to earth electric field, judgement is transient fault or permanent fault.
6. a kind of filter method based on fault detector false positive signal according to claim 1, it is characterized in that, in described step S5, the remote signals that described power distribution automation main website uploads in conjunction with described fault detector, judges whether this fault detector signal is reported by mistake or fail to report.
7. a kind of filter method based on fault detector false positive signal according to claim 1, it is characterized in that, in described step S6, described power distribution automation main station system supports multithreading, and by multithreading, computing method are called, the fault indication signal that multiple fault detector is uploaded is processed simultaneously.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107844841A (en) * | 2017-12-06 | 2018-03-27 | 福建奥通迈胜电力科技有限公司 | Simple electrical power distribution network fault location method based on fault detector Multi-information acquisition |
| CN105759165B (en) * | 2016-05-03 | 2018-11-02 | 国网新疆电力公司昌吉供电公司 | Power distribution automation main station functionization evaluating method based on feeder fault condition diagnosing |
| CN110470948A (en) * | 2019-08-15 | 2019-11-19 | 国网四川省电力公司电力科学研究院 | A kind of fault location system and method based on platform area circuit topology relationship |
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| CN203745593U (en) * | 2014-03-12 | 2014-07-30 | 泉州七星电气有限公司 | Electric power monitoring and fault positioning system |
| CN104092305A (en) * | 2014-07-11 | 2014-10-08 | 国家电网公司 | Power distribution network fault handling method |
| CN204330940U (en) * | 2014-12-31 | 2015-05-13 | 伍曙伟 | A kind of line fault monitoring system |
| CN104849612A (en) * | 2014-02-14 | 2015-08-19 | 国网河南省电力公司鹤壁供电公司 | Power distribution network fault locating method and device |
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Patent Citations (4)
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| CN104849612A (en) * | 2014-02-14 | 2015-08-19 | 国网河南省电力公司鹤壁供电公司 | Power distribution network fault locating method and device |
| CN203745593U (en) * | 2014-03-12 | 2014-07-30 | 泉州七星电气有限公司 | Electric power monitoring and fault positioning system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105759165B (en) * | 2016-05-03 | 2018-11-02 | 国网新疆电力公司昌吉供电公司 | Power distribution automation main station functionization evaluating method based on feeder fault condition diagnosing |
| CN107844841A (en) * | 2017-12-06 | 2018-03-27 | 福建奥通迈胜电力科技有限公司 | Simple electrical power distribution network fault location method based on fault detector Multi-information acquisition |
| CN107844841B (en) * | 2017-12-06 | 2021-08-03 | 福建奥通迈胜电力科技有限公司 | Simple power distribution network fault positioning method based on fault indicator multi-information fusion |
| CN110470948A (en) * | 2019-08-15 | 2019-11-19 | 国网四川省电力公司电力科学研究院 | A kind of fault location system and method based on platform area circuit topology relationship |
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Application publication date: 20160413 |