摘要
在运行的电力线路中,能快速准确实现对谐波中非平稳信号的处理,已成为现代信号处理的研究热点。而经验模态分解方法,在非平稳非线性信号处理与分析领域,不断地展现其优势。文中对经验模态分解进行了深入的研究,重点分析经验模态分解存在的模态混叠现象,并针对这一现象提出了基于经验模态分解的小波处理法。
In the operation of power lines,the fast and accurate processing of non-stationary signals in harmonics has become a research hotspot in modern signal processing.Empirical mode decomposition（EMD）shows its advantages in nonstationary nonlinear signal processing and analysis.In this paper,the empirical mode decomposition was studied deeply,and the modal aliasing phenomenon in the empirical mode decomposition was analyzed,and a wavelet processing method based on empirical mode decomposition was proposed.
作者
陈旭
丁杰峰
赵诗雅
CHEN Xu;DING Jie-feng;ZHAO Shi-ya(UHV AC and DC Inspection Centre,State Grid Hubei Corporation Maintenance Company,Yichang 443000,China)
出处
《通信电源技术》
2018年第7期76-77,共2页
Telecom Power Technology
关键词
谐波检测
经验模态分解
模态混叠
小波法
harmonic detection
empirical mode decomposition
modal mixing wavelet method
