Detection Method of SF<sub>6</sub> Leakage in Gas Insulated Power Equipment Based on Wavelet Analysis

YAN Tao

doi:10.13296/j.1001-1609.hva.2020.10.036

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Detection Method of SF₆ Leakage in Gas Insulated Power Equipment Based on Wavelet Analysis

更新时间：2025-04-26

- Detection Method of SF₆ Leakage in Gas Insulated Power Equipment Based on Wavelet Analysis
- High VoltageApparatus Vol. 56, Issue 10, Pages: 233-238(2020)
- 作者机构：
  
  云南电网有限责任公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2020.10.036
  CLC： TM213;TM855
- Published：2020
- 稿件说明：
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[1]颜涛.基于小波分析的气体绝缘电力设备中SF_6泄漏检测方法[J].高压电器,2020,56(10):233-238.

YAN Tao. Detection Method of SF₆ Leakage in Gas Insulated Power Equipment Based on Wavelet Analysis[J]. High voltageapparatus, 2020, 56(10): 233-238.
[1]颜涛.基于小波分析的气体绝缘电力设备中SF_6泄漏检测方法[J].高压电器,2020,56(10):233-238. DOI： 10.13296/j.1001-1609.hva.2020.10.036.

YAN Tao. Detection Method of SF₆ Leakage in Gas Insulated Power Equipment Based on Wavelet Analysis[J]. High voltageapparatus, 2020, 56(10): 233-238. DOI： 10.13296/j.1001-1609.hva.2020.10.036.

摘要

目前的气体绝缘电力设备中SF

气体泄漏检测方法存在检测精度低、无法对泄漏点准确定位等不足

为此提出基于小波分析的绝缘电力设备中SF

气体泄漏检测方法。通过红外气体检漏器进行采样

通过直方图均衡化实现图像预处理

通过小波变换对信号、图像进行分解

再通过小波变换去除背景

留下目标和噪声

再通过设置小波阈值去除噪声

至此完成基于小波分析的绝缘电力设备中SF

气体泄漏检测方法的设计与实现。从检测精度和泄漏点定位准确性两方面

对提出的基于小波分析的绝缘电力设备中SF

气体泄漏检测方法和传统的检测方法进行对比实验。实验结果表明

与传统的绝缘电力设备中SF

气体泄漏检测方法相比

采用提出基于小波分析的绝缘电力设备中SF

气体泄漏检测方法

其检测精度提高几十倍

检测精度可达0.000 1 mL/s

且对泄漏点的定位准确性更高

能够更有效地对绝缘电力设备中SF

气体泄漏进行检测。

Abstract

The current SF

gas leakage detection method for insulated power equipment has the disadvantages of low detection accuracy and inability to accurately locate the leak point. Therefore

a method for detecting SF

gas leakage in insulated power equipment based on wavelet analysis is proposed. The infrared gas leak detector is used for sampling

the image preprocessing is realized by histogram equalization

the signal and the image are decomposed by wavelet transform

the background is

removed by wavelet transform

the target and noise are left

and the noise is removed by setting a wavelet threshold

so far

the design and implementation of SF

gas leakage detection method for insulated power equipment based on wavelet analysis has been completed. From the two aspects of detection accuracy and leakage point location accuracy

the SF

gas leakage detection method and the traditional detection method in the proposed insulated power equipment based on wavelet analysis are Comparative experiment. The experimental results show that compared with the traditional SF

gas leakage detection method in insulated power equipment

the SF

gas leakage detection method based on wavelet analysis is proposed. The detection accuracy is improved by dozens of times and the detection accuracy can reach 0.000 1 mL/s

and the positioning accuracy of the leak point is higher

which can more effectively detect the SF

gas leakage in the insulated power equipment.

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Detection Method of SF6 Leakage in Gas Insulated Power Equipment Based on Wavelet Analysis

DOI：10.13296/j.1001-1609.hva.2020.10.036

摘要

Abstract

关键词

Keywords

references

Detection Method of SF₆ Leakage in Gas Insulated Power Equipment Based on Wavelet Analysis