CN101650392A - Return voltage testing method used for fault diagnosis of distribution equipment - Google Patents
Return voltage testing method used for fault diagnosis of distribution equipment Download PDFInfo
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- CN101650392A CN101650392A CN200810041782A CN200810041782A CN101650392A CN 101650392 A CN101650392 A CN 101650392A CN 200810041782 A CN200810041782 A CN 200810041782A CN 200810041782 A CN200810041782 A CN 200810041782A CN 101650392 A CN101650392 A CN 101650392A
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Abstract
The invention relates to a return voltage testing method for fault diagnosis of distribution equipment, which comprises the following steps: constructing a return voltage method testing platform in alaboratory, performing a test aiming at a solid insulating material used by transformation and distribution equipment, and exploring a return voltage method changing rule of a test sample under the condition of comparing different humidities and aging degrees; performing analysis aiming at field actual measurement results by using a statistical analysis method, and extracting an insulation fault diagnostic criterion of the distribution equipment from the analysis; and performing comprehensive analysis on return voltage method evaluation parameters and field judgment bases to develop an expertsystem based on a return voltage method. Compared with the prior art, the return voltage testing method introduces a novel testing method namely the return voltage method to profitably supplement a field transformer testing technique and effectively improve the running reliability of the transformer, has a very extensive application prospect, and not only has very good economic benefits but also has great social functions.
Description
Technical field
The present invention relates to the application of return voltage method, relate in particular to a kind of return voltage test method that is used for fault diagnosis of distribution equipment.
Background technology
Along with the accelerated growth of Electricity Demand, a large amount of controller switching equipments is just approaching or surpass its design and operation time limit, is very significant to this kind equipment solid insulation situation and the assessment of the comprehensive diagnos in life-span.On the other hand, also there is bigger deficiency in the fault diagnosis of distribution equipment technology at the aspect such as representativeness of choosing of expense, operability and solid sample, replenishes on-the-spot practical application so be badly in need of introducing more, more effective test method.Return voltage method (Return Voltage Method, RVM) promptly be a kind of novelty, easy non-destructive off-line method for diagnosing faults, it utilizes the dielectric response ultimate principle to obtain the solid insulation status information, determines equipment running status, and can be used as the useful additional of isolation diagnostic method.RVM is a kind of non-destructive testing (NDT), and its test wiring is simple, is convenient to field conduct.It not only can to year controller switching equipment of a specified duration insulation make aging assessment, can also to will put into operation and big light maintenance after equipment detect, make the installation of equipment and the evaluation of maintenance technology, range of application is quite wide, more implements state maintenance a kind of important means is provided.
Summary of the invention
Purpose of the present invention is exactly for the defective that above-mentioned prior art exists, the return voltage test method that provides a kind of high-efficiency reliable to be used for fault diagnosis of distribution equipment are provided.
Purpose of the present invention can be achieved through the following technical solutions: a kind of return voltage test method that is used for fault diagnosis of distribution equipment is characterized in that this method may further comprise the steps:
(1) in testing laboratory, makes up return voltage method test platform, test with solid insulating material, under contrast different humidity and the degree of aging situation, excavate sample return voltage method Changing Pattern at distribution equipment;
(2) utilize statistical analysis technique to analyze, therefrom extract controller switching equipment insulation fault diagnosis criterion at field actual measurement results;
(3) analysis-by-synthesis return voltage method evaluate parameter and field judgment bases are developed the expert system based on the return voltage method.
Compared with prior art, the present invention has replenished on-the-spot transformer test technology valuably by introducing this novel test method of return voltage method, effectively improve the transformer operational reliability, its application prospect is boundless, and extraordinary economic benefit is not only arranged, and very large social agency is arranged; According to domestic and foreign literature report, have a lot of superiority based on the transformer test method of return voltage, and can be extended to aspects such as main equipment fault analysis and maintenance decision, so market potential is very big, market outlook are also fine.
Embodiment
A kind of return voltage test method that is used for fault diagnosis of distribution equipment of the present invention may further comprise the steps:
(1) in testing laboratory, makes up return voltage method test platform, test with solid insulating material, under contrast different humidity and the degree of aging situation, excavate sample return voltage method Changing Pattern at distribution equipment;
(2) utilize statistical analysis technique to analyze, therefrom extract controller switching equipment insulation fault diagnosis criterion at field actual measurement results;
(3) analysis-by-synthesis return voltage method evaluate parameter and field judgment bases are developed the expert system based on the return voltage method.
Innovative point of the present invention is:
(1) by introducing this novel test method of return voltage method, replenished on-the-spot transformer test technology valuably;
(2) effectively improve the transformer operational reliability, its application prospect is boundless, and extraordinary economic benefit is not only arranged, and very large social agency is arranged;
(3) the transformer test method based on return voltage has a lot of superiority, and can be extended to aspects such as main equipment fault analysis and maintenance decision;
(4) carry out the return voltage method of testing at the transformer more than 35 kilovolts and test, and obtain eigenwert;
(5) to scene or lab investigation to data or the data collected of other modes, analyze; Then on this basis, filter out typical evaluating and preliminary criterion.Make up return voltage test method platform for finally reaching, new test method is introduced in suggestion in the existing testing regulations of transformer, and provides corresponding test parameters and basis for estimation and lay a solid foundation;
(6) explore distribution equipment except that transformer, the feasibility of carrying out the test of return voltage method.
Carry out durability test in the laboratory: for seeking the Changing Pattern of return voltage in the insulation ag(e)ing process, with transformer solid insulation material (oil-paper) is sample, under lab carry out the even aging test of longer acceleration, aging with transformer paper in the analog equivalent actual motion; Under the condition of sealing, immerse the transformer oil of different moisture content then, leave standstill 48 hours after, test.Concrete measurement parameter comprises: return voltage, charging voltage, discharge and recharge time, return voltage slope, dielectric loss angle tangent, electric capacity, water content in oil, environment temperature, ambient humidity or the like.Keep taking multiple measurements under the identical conditions as far as possible, exploring aging preferably reflection characteristic parameter, thus the Changing Pattern of observation return voltage and each parameter under different aging conditions.
Field measurement: after the use of being familiar with 5462 return voltage tables, survey with many transformers that the scene are under the different aging conditions, thus the major parameter of analyzing influence return voltage waveform (comprising working time, ring temperature, structure and measuring condition etc.); In order to improve the result of use of instrument, the power equipment practical operating experiences should be incorporated among the fault analysis of concrete transformer, intend carrying out being no less than 10 times field measurement, focus on the area, Shanghai and test.If when surveying in Shanghai, the field staff that need be no less than 2 participates in.Preferably can before and after the big light maintenance of transformer, measure,, be more conducive to find aging rule with comparative test result.
Technical training: proving installation is comprehensively introduced and training on operation, comprises principle, using method, on-the-spot application notice, instrument daily servicing; Introduce the factor analysis that the laboratory power equipment wears out with material aging mechanism, influence, and the senior using method in laboratory of instrument; Project is carried out mid-term, in conjunction with the laboratory study achievement, the field staff is just carried out a technical training, and how preliminary instruction carries out the discriminatory analysis transformer fault; Before the project concluding, give training at the on-the-spot personnel of teams and groups, focus on how carrying out discriminatory analysis.
Claims (1)
1. return voltage test method that is used for fault diagnosis of distribution equipment is characterized in that this method may further comprise the steps:
(1) in testing laboratory, makes up return voltage method test platform, test with solid insulating material, under contrast different humidity and the degree of aging situation, excavate sample return voltage method Changing Pattern at distribution equipment;
(2) utilize statistical analysis technique to analyze, therefrom extract controller switching equipment insulation fault diagnosis criterion at field actual measurement results;
(3) analysis-by-synthesis return voltage method evaluate parameter and field judgment bases are developed the expert system based on the return voltage method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810041782A CN101650392A (en) | 2008-08-15 | 2008-08-15 | Return voltage testing method used for fault diagnosis of distribution equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810041782A CN101650392A (en) | 2008-08-15 | 2008-08-15 | Return voltage testing method used for fault diagnosis of distribution equipment |
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| Publication Number | Publication Date |
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| CN101650392A true CN101650392A (en) | 2010-02-17 |
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| CN200810041782A Pending CN101650392A (en) | 2008-08-15 | 2008-08-15 | Return voltage testing method used for fault diagnosis of distribution equipment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108828413A (en) * | 2018-04-04 | 2018-11-16 | 国网天津市电力公司电力科学研究院 | Transformer insulated cardboard aging quantitative evaluating method based on effect of electromagnetic field |
| CN108872803A (en) * | 2018-03-29 | 2018-11-23 | 福建工程学院 | A kind of detection method of the transformer insulation state based on dielectric return voltage |
| CN113514317A (en) * | 2020-04-10 | 2021-10-19 | 中国石油化工股份有限公司 | Performance evaluation method and evaluation system of cold insulation material |
-
2008
- 2008-08-15 CN CN200810041782A patent/CN101650392A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108872803A (en) * | 2018-03-29 | 2018-11-23 | 福建工程学院 | A kind of detection method of the transformer insulation state based on dielectric return voltage |
| CN108872803B (en) * | 2018-03-29 | 2020-12-08 | 福建工程学院 | A detection method of transformer insulation state based on recovery voltage of insulating medium |
| CN108828413A (en) * | 2018-04-04 | 2018-11-16 | 国网天津市电力公司电力科学研究院 | Transformer insulated cardboard aging quantitative evaluating method based on effect of electromagnetic field |
| CN108828413B (en) * | 2018-04-04 | 2020-12-11 | 国网天津市电力公司电力科学研究院 | Quantitative evaluation method for aging of transformer insulating paperboard based on dielectric response characteristics |
| CN113514317A (en) * | 2020-04-10 | 2021-10-19 | 中国石油化工股份有限公司 | Performance evaluation method and evaluation system of cold insulation material |
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Application publication date: 20100217 |