高压电器2017，Vol.53Issue(12)：14-19,6.DOI:10.13296/j.1001-1609.hva.2017.12.003
短时能量法在断路器机械振动信号分析中的应用
Application of Short-time Energy Method in the Analysis of Mechanical Vibration Signal of Circuit Breaker
王静君 1王飞 2杨元威 3赵科 1刘通 1关永刚3
作者信息
- 1. 国网江苏省电力公司电力科学研究院,南京211103
- 2. 兰州供电公司,兰州730070
- 3. 清华大学电机系,北京100084
- 折叠
摘要
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.关键词
短时能量法/断路器/振动信号/分析应用Key words
short-time energy method/circuit breaker/vibration signal/analysis and application引用本文复制引用
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):14-19,6.
