Title :
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
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;
Conference_Titel :
Electrical, Electronics and Computer Science (SCEECS), 2012 IEEE Students' Conference on
Conference_Location :
Bhopal
Print_ISBN :
978-1-4673-1516-6
DOI :
10.1109/SCEECS.2012.6184756
