电力系统保护与控制2012，Vol.40Issue(14)：132-136,5.
基于Fast-ICA和对称正交化的谐波检测
Harmonic detection based on FAST-ICA and symmetrical orthogonalization
冉曦希 1周群1
作者信息
- 1. 四川大学电气信息学院,四川成都610065
- 折叠
摘要
Abstract
A method of harmonic detection based on Fast-ICA and symmetrical orthogonalization is proposed. First, this paper introduces independent component analysis method briefly, treats harmonic signal as a linear combination of multiple independent components, and uses the negative entropy great independence standards based Fast-ICA algorithm to implement the estimations of one independent component. Then, the parallel estimation of multiple components is implemented by using symmetrical orthogonalization method, and the base wave, every harmonic signal and noise signal are obtained separately, thus the harmonic detection is achieved. The simulation results show that this method can accurately detect the frequency and amplitude of every harmonic composition and it is not sensitive to noise. Compared with serial orthogonalization based Fast-ICA algorithm, this method has higher degree of detection precision and faster convergence speed.
关键词
独立成分分析/Fast-ICA/负熵/对称正交化/电能质量/谐波检测Key words
independent component analysis/ Fast-ICA/ negative entropy/ symmetrical orthogonalization/ power quality/ harmonic detection分类
信息技术与安全科学引用本文复制引用
冉曦希,周群..基于Fast-ICA和对称正交化的谐波检测[J].电力系统保护与控制,2012,40(14):132-136,5.
