Application of Short-time Energy Method in the Analysis of Mechanical Vibration Signal of Circuit Breaker

WANG Jingjun; WANG Fei; YANG Yuanwei; ZHAO Ke; LIU Tong; GUAN Yonggang

doi:10.13296/j.1001-1609.hva.2017.12.003

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Application of Short-time Energy Method in the Analysis of Mechanical Vibration Signal of Circuit Breaker

更新时间：2025-04-26

- Application of Short-time Energy Method in the Analysis of Mechanical Vibration Signal of Circuit Breaker
- High VoltageApparatus Vol. 53, Issue 12, Pages: 14-19(2017)
- 作者机构：
  
  1. 国网江苏省电力公司电力科学研究院
  2. 兰州供电公司
  3. 清华大学电机系
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2017.12.003
  CLC： TM561
- Published：2017
- 稿件说明：
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[1]王静君,王飞,杨元威,赵科,刘通,关永刚.短时能量法在断路器机械振动信号分析中的应用[J].高压电器,2017,53(12):14-19.

WANG Jingjun, WANG Fei, YANG Yuanwei, et al. Application of Short-time Energy Method in the Analysis of Mechanical Vibration Signal of Circuit Breaker[J]. High voltageapparatus, 2017, 53(12): 14-19.
[1]王静君,王飞,杨元威,赵科,刘通,关永刚.短时能量法在断路器机械振动信号分析中的应用[J].高压电器,2017,53(12):14-19. DOI： 10.13296/j.1001-1609.hva.2017.12.003.

WANG Jingjun, WANG Fei, YANG Yuanwei, et al. Application of Short-time Energy Method in the Analysis of Mechanical Vibration Signal of Circuit Breaker[J]. High voltageapparatus, 2017, 53(12): 14-19. DOI： 10.13296/j.1001-1609.hva.2017.12.003.

摘要

断路器机械振动信号分析中

提取振动事件是一种有效的信号时域分析方法和实现断路器故障诊断的可靠途径。振动信号与语音信号类似均属于瞬时非平稳信号

因此将语音信号处理中常用的短时能量法应用于振动信号分析中

在给出窗函数及窗长度选用原则后

对不同状况下采集的振动信号从提高信号信噪比、凸显振动事件、提取事件发生时刻等方面与包络法进行了分析与比较

结果表明

短时能量法不仅能明显提高信号信噪比

更是一种提取振动事件发生时刻的有效方法。

Abstract

In the analysis of mechanical vibration signal of circuit breaker

the extraction of vibration event is an effective method for the signal time domain analysis and also a reliable way to realize the fault diagnosis of the circuit breaker.The vibration signal is similar to the speech signal

both of them belong to the non-stationary signal

so in this paper

the short-time energy method is used in the analysis of vibration signal

after given the selection principle of window function and window length

analyzes the effect of the method in improving signal SNR（signal-noise ratio）

highlighting and extracting the vibration events and compare with envelope method

the result shows that the short-time energy method not only can significantly improve the signal SNR

but also is an effective way to extract the occurrence of vibration events.

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