The Method of Eliminating White Noise at On - line detection of Partial Discharge by Wavelet Analysis

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The Method of Eliminating White Noise at On - line detection of Partial Discharge by Wavelet Analysis

更新时间：2025-04-26

- The Method of Eliminating White Noise at On - line detection of Partial Discharge by Wavelet Analysis
- High VoltageApparatus Issue 3, Pages: 8-12(1999)
- 作者机构：
  
  1. 重庆大学
  2. 重庆大学 400044
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM855
- Published：1999
- 稿件说明：
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[1]杨永明,孙才新,李新.用小波分析去除局部放电在线监测中的白噪干扰[J].高压电器,1999(03):8-12.

The Method of Eliminating White Noise at On - line detection of Partial Discharge by Wavelet Analysis[J]. High voltageapparatus, 1999, (3): 8-12.
[1]杨永明,孙才新,李新.用小波分析去除局部放电在线监测中的白噪干扰[J].高压电器,1999(03):8-12. DOI：

The Method of Eliminating White Noise at On - line detection of Partial Discharge by Wavelet Analysis[J]. High voltageapparatus, 1999, (3): 8-12. DOI：

摘要

分析了电力变压器局部放电在线监测中局放信号及白噪声的特征.引出了时—频功率谱的概念.研究了自相关函数的小波变换及它与时—频功率谱的关系.提出了利用小波分析去除变压器局部放电在线监测中的白噪干扰的方法.

Abstract

The characteristics of partial discharge （PD） signal and white noise at on - line transformer monitoring are analyzed. The concept of time - frequency power spectrum is introduced. The relations between the time- frequency power spectrum and wavelet transformation of selfcorrelation function are also studied. A method for eliminating white noise by wavelet analysis is suggested.

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