Three-type fault triangle diagnosis method based on decomposition component of SF6 gas insulated equipment

A technology for gas-insulated equipment and decomposing components, applied in design optimization/simulation, instrumentation, testing dielectric strength, etc.

Active Publication Date: 2018-12-11
WUHAN UNIV +2
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

These methods are basically for the diagnosis of a large type of fault, PD, and there is no method to distinguish PD faults, high-energy discharge faults and POF faults at one time.

Method used

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  • Three-type fault triangle diagnosis method based on decomposition component of SF6 gas insulated equipment
  • Three-type fault triangle diagnosis method based on decomposition component of SF6 gas insulated equipment
  • Three-type fault triangle diagnosis method based on decomposition component of SF6 gas insulated equipment

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Embodiment Construction

[0063] 1. The principle of the method of the present invention will be further described below in conjunction with specific embodiments. The specific establishment process includes:

[0064] 1. Data source: The experimental data source of the present invention is that the research group has accumulated 1575 groups of SF after more than 10 years 6 The experimental data of the laboratory simulation fault decomposition, among which the data under the PD fault is 322 groups; the data under the POF fault is 438 groups; the data under the spark discharge fault is 815 groups.

[0065] 2. Data processing: The proportion of gas product content is used as the coordinate axis of the triangular coordinate system, and the proportion of gas product content refers to the percentage value between the product content and the total gas content of the application. SF 6 The main decomposition product of gas under various faults is SOF 2 、SOF 4 , SO 2 f 2 、CF 4 , SO 2 、H 2 S, CO 2 Wait. ...

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Abstract

The invention relates to a three-type fault triangle diagnosis method based on the decomposition component of SF6 gas insulated equipment. The method includes a data source acquiring step, a data processing step, a feature component extracting step, a feature weight selecting step, and a triangle fault diagnosis method model establishing step. The method has the following advantages that 1, the method can simultaneously diagnose GIE high energy discharge faults, PD, and POF; 2, different test conditions, such as micro water, micro oxygen, air pressure and adsorbent, have little influence on the diagnosis result of the triangle fault diagnosis method such that the method is less likely to be affected by field complex environmental factors and has high reliability; 3, the method can providea simple and effective field diagnostic technology for power production units, and solves the problem that it is difficult for power operation and maintenance workers to use SF6 decomposition components to quickly diagnose internal faults of the GIE.

Description

technical field [0001] The present invention belongs to sulfur hexafluoride (SF 6 ) The technical field of insulation fault type diagnosis of gas-insulated electrical equipment, specifically relates to a method based on SF 6 Three types of fault triangular diagnosis methods for decomposed components of gas-insulated equipment. Background technique [0002] SF represented by gas insulated switchgear (GIS), gas insulated transformer (GIT), gas insulated pipeline (GIL), etc. 6 Gas-insulated equipment (GIE) has been widely used in power systems since it was first put into operation in Germany in 1967 because of its small footprint, high reliability, and flexible configuration. Although GIE is more reliable than ordinary electrical equipment, its operating experience and fault statistics show that it still has a high insulation defect rate, and because it adopts a high-pressure sealed structure, once the equipment fails, its maintenance cost will be higher and the maintenance c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/12G06F17/50
CPCG01R31/1227G01R31/1263G06F30/20
Inventor 曾福平唐炬高克利刘有为吴司颖苗玉龙姚强张晓星雷志城张明轩
Owner WUHAN UNIV
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