Harmonic detection for three-phase circuits based on resampling and feedback theory

Author

Zhang, Jun-min ; Liu, Kai-pei

Author_Institution

South-Central Univ. For Nationalities, Wuhan

Volume

1

fYear

2007

fDate

2-4 Nov. 2007

Firstpage

29

Lastpage

32

Abstract

A method for digital harmonic detecting based on resampling and feedback theory is proposed, and a digital harmonic detecting system is designed. According of feedback theory, the filter can be designed to take the direct current Ip(Iq), and the ip(iq) before the low-pass filter can be resampled based on the resampling theory. Through this digital system the harmonic currents in power system can be detected timely and accurately. The simulation of the system shows that this filter not only takes advantages of digital filters in accuracy, but also overcomes the bad performance of digital filters in dynamics, and can fellow the measured signal in real time.

Keywords

active filters; digital filters; feedback; low-pass filters; power harmonic filters; power system harmonics; reactive power; active power filter; digital filters; digital harmonic detection; feedback theory; harmonic currents; instantaneous reactive power theory; low-pass filter; power system; resampling theory; three-phase circuits; Digital filters; Digital systems; Feedback circuits; Filtering theory; Low pass filters; Power harmonic filters; Power system dynamics; Power system harmonics; Power system measurements; Power system simulation; Active power filter; Feedback theory; Harmonic detection; Instantaneous reactive theory; Resampling;

fLanguage

English

Publisher

ieee

Conference_Titel

Wavelet Analysis and Pattern Recognition, 2007. ICWAPR '07. International Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4244-1065-1

Electronic_ISBN

978-1-4244-1066-8

Type

conf

DOI

10.1109/ICWAPR.2007.4420630

Filename

4420630