Partial discharge pulse feature extraction method and device, computer equipment and medium

A partial discharge pulse and feature extraction technology, which is applied in the direction of measuring devices, measuring electricity, and measuring electrical variables, etc., can solve the problem of incomplete feature extraction, achieve the effect of complete feature extraction, reduce noise signals, and reduce interference
CN110907770AInactive Publication Date: 2020-03-24SHENZHEN POWER SUPPLY BUREAU
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHENZHEN POWER SUPPLY BUREAU
Publication Date
2020-03-24
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a partial discharge pulse feature extraction method and device, computer equipment and a medium. The method comprises the following steps: acquiring a partial discharge signal; based on an adaptive signal time-frequency processing method, decomposing the partial discharge signal to obtain an intrinsic mode function component; based on the statistical property of the noisesignal, randomly sorting the intrinsic mode function components to obtain a reconstructed signal; accumulating and averaging the reconstructed signals to obtain denoised partial discharge signals; decomposing the denoised partial discharge signal into a plurality of product functions based on a local mean decomposition method; and extracting pulse features according to the plurality of product functions. According to the partial discharge pulse feature extraction method provided by the invention, the pulse features can be extracted more completely, so that the partial discharge signals can beanalyzed accurately.
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Description

technical field

[0001] The present application relates to the technical field of partial discharge monitoring, in particular to a partial discharge pulse feature extraction method, device, computer equipment and media. Background technique

[0002] Partial discharge mainly refers to the local discharge of transformers, transformers, power cables and other power equipment under the action of high voltage. This kind of discharge is limited to only causing a local short circuit of the insulation between the conductors without forming a conductive path. Partial discharge is one of the main causes of insulation failure of high-voltage power equipment. When partial discharge occurs in the insulation of equipment, it will affect the insulation life of the equipment. The detection frequency band is increasingly developing in the direction of high frequency and broadband, and UHF signals will be generated when partial discharge occurs in equipment. Therefore, UHF monitoring methods ...

Claims

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