摘要
分析了离散小波混叠的物理本质,提出一种新的混叠抑制方法,该方法克服了现有抗混叠方法计算量大的缺点。仿真实验表明该方法可以有效消除谐波检测中的小波混叠现象,有利于进行电力系统谐波信号精确分析。
This paper analyzes the physical essence of aliasing in discrete wavelet at first,then propose a new method to reduce aliasing.This new method demands less calculation amount than existing methods used to reduce aliasing.Simulation result proves that it can effectively eliminate aliasing in wavelet transform and provide a vigorous means for power system harmonic analysis.
出处
《河北电力技术》
2007年第2期9-11,共3页
Hebei Electric Power
关键词
电力系统
小波变换
小波混叠
谐波检测
间谐波
power system
wavelet transform
wavelet aliasing
harmonic detection
inter-harmonics
