Filtering, denoising and analyzing method, system and device for partial discharge signals and storage medium

Abstract

The invention discloses a filtering, denoising and analyzing method for a partial discharge signal. The filtering, denoising and analyzing method comprises the following steps: filtering a partial discharge signal to be processed; carrying out wavelet transform denoising on the filtered partial discharge signal; and carrying out differential wave crest detection and local mean value characteristicdecomposition on the partial discharge signal subjected to wavelet transform denoising to obtain an analysis result of the partial discharge signal. By applying the technical scheme provided by the invention, the accuracy of the analysis result of the partial discharge signal can be effectively improved. The invention further provides a filtering, denoising and analyzing system and device for thepartial discharge signals and a storage medium, and the corresponding technical effects are achieved.

Description

technical field [0001] The present invention relates to the technical field of signal processing, in particular to a method, system, device and storage medium for filtering, denoising and analyzing partial discharge signals. Background technique [0002] With the continuous development and progress of science and technology, the importance of high-voltage switchgear in the power system is also increasing. In the high-voltage switchgear, there are a large number of wiring to connect various components to ensure the normal operation of the equipment. When the electric field strength in a local area reaches the breakdown field strength of the medium in this area, a discharge will occur in this area, but this discharge does not penetrate between the two conductors to which the voltage is applied, that is, the entire insulation system does not break down and remains insulated performance, this phenomenon is called partial discharge. Partial discharge is a common problem in insu...

AI Technical Summary

Problems solved by technology

Partial discharge is a common problem in insulation. Under certain conditions, it will lead to insulation performance degradation, and even cause serious situations such as fire, which poses a threat to the safe operation of the system.

[0003] At present, the processing of partial discharge signals is mainly focused on detection, and a single algorithm is usually used, which makes the accuracy of the analysis results low

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