Analysis of harmonics in power system using wavelet transform

Author

Gudaru, U. ; Waje, Vishal B.

Author_Institution

Dept. of Electr. Eng., Walchand Coll. of Eng., Sangli, India

fYear

2012

fDate

1-2 March 2012

Firstpage

1

Lastpage

5

Abstract

The paper proposes an algorithm based on the wavelet transform for the analysis of harmonics in power systems. The algorithm proposed decomposes the voltage/current waveforms into uniform frequency bands corresponding to the odd harmonic components of the signal. First, the selection of the mother wavelet, the sampling frequency and the frequency characteristics of the selected wavelet filter bank are studied. Finally the performance of the method proposed is compared with the results obtained using DFT analysis and the harmonic group concept introduced by the International Electro technical Commission using different test waveforms proposed in standard IEC-61000-4-7.

Keywords

channel bank filters; harmonic analysis; power system harmonics; wavelet transforms; DFT analysis; IEC-61000-4-7 standard; International Electrotechnical Commission; frequency characteristics; odd harmonic components; power system harmonic analysis; sampling frequency; test waveforms; uniform frequency bands; voltage-current waveform decomposition; wavelet filter bank; wavelet transform; Harmonic analysis; Multiresolution analysis; Power harmonic filters; Wavelet transforms; MATLAB; discrete fourier transform (DFT); harmonics; total harmonic distortion (THD); wavelet transform;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical, Electronics and Computer Science (SCEECS), 2012 IEEE Students' Conference on

Conference_Location

Bhopal

Print_ISBN

978-1-4673-1516-6

Type

conf

DOI

10.1109/SCEECS.2012.6184756

Filename

6184756