A wavelet transform power harmonic detection method based on DSP

Author

Xie Weicheng ; Xie Yi ; Yang Xia ; Li Yuejing

Author_Institution

Sch. of Electr. & Inf. Eng., XIHUA Univ., Chengdu, China

fYear

2010

fDate

29-31 July 2010

Firstpage

4267

Lastpage

4272

Abstract

To improve the accuracy of power harmonics detect, a power harmonic detection method based on DSP and a pair of A/D is provided in the paper. Wavelet transform has been widely used in the analysis of power system as a method to analyze digital signals, this paper adopt coefficient dissociation with the wavelet packet transform express harmonic current and voltage values etc., the power harmonics detect device can send data to a PC through DSP interface, program by mixing VC++ and LabVIEW, and achieve real-time power harmonics detect. The experiment results show that the wavelet packet transform can analyze the local characteristics of the signal more accurately, and improve the harmonic analysis of real-time and accuracy.

Keywords

analogue-digital conversion; digital signal processing chips; power engineering computing; power system harmonics; wavelet transforms; A/D convertor; DSP; DSP interface; LabVIEW; VC++; coefficient dissociation; digital signal analysis; power system analysis; wavelet packet transform; wavelet transform power harmonic detection method; Digital signal processing; Harmonic analysis; Power harmonic filters; Wavelet packets; DSP; Power Harmonic Detection; Wavelet transform;

fLanguage

English

Publisher

ieee

Conference_Titel

Control Conference (CCC), 2010 29th Chinese

Conference_Location

Beijing

Print_ISBN

978-1-4244-6263-6

Type

conf

Filename

5572858