河北工程技术高等专科学校学报Issue(2)：48-51,4.
一种基于Hilbert和Chirp—Z变换闪变测量的改进方法
An Improved Method of Flicker Measurement Based on Hilbert Transform and the Chirp-Z Transform
帅旗 1金颖1
作者信息
- 1. 华北电力大学电气与电子工程学院,北京102206
- 折叠
摘要
Abstract
In order to make an accurate measurement for flicker, especially when the wave vector is a square wave signal generated by voltage flicker, an improved algorithm based on Hilbert transform and Chirp-Z transform has been proposed. Firstly, the theory of the Hilbert transform and the Chirp-Z transform is introduced. The formula of extracting the flicker envelope by the Hilberl： transform has been derived from the theory. In particular, by conveniently applying existing detection methods, larger error of the short-term flicker have been found when the wave vector was a square wave ,;ignal. According to this problem, an improved method was proposed. Finally, the correctness of the proposed method is verified by an example.关键词
电压闪变/Hilbert变换/Chirp—Z变换/方波Key words
voltage flicker/Hilbert transform/Chirp-Z transform/square wave分类
动力与电气工程引用本文复制引用
帅旗,金颖..一种基于Hilbert和Chirp—Z变换闪变测量的改进方法[J].河北工程技术高等专科学校学报,2012,(2):48-51,4.
