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

Inactive Publication Date: 2020-03-24
SHENZHEN POWER SUPPLY BUREAU
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  • Abstract
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Problems solved by technology

[0004] However, for UHF signals, there will be incomplete feature extraction using these methods

Method used

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

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Embodiment Construction

[0065] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

[0066] The partial discharge pulse feature extraction method provided in this application can be applied to a partial discharge monitoring system. The partial discharge monitoring system may include a control device, a collection device, and the like. Wherein, the collection device can collect partial discharge signals in real time; the control device may include computer equipment, which may be but not limited to industrial computers, notebook computers, smart phones, tablet computers and portable wearable devices. The partial discharge pulse feature extraction method pr...

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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.

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/12
CPCG01R31/1227
Inventor 贺振华杨振宝肖利龙张嘉乐
Owner SHENZHEN POWER SUPPLY BUREAU
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