Loading...
Harmonics and interharmonics estimation using wavelet transform
Author(s)
Keaochantranond, Tiwa
Boonseng, Chongrag
Date Issued
December 1, 2002
Type
Conference Paper
Abstract
This paper presents the harmonics and interharmonics estimation of non-stationary signal. The approach is based on wavelet transform analysis. Wavelet transform decomposes the non-stationary signal into sub-band frequency. The decomposition is performed using discrete wavelet transform. Discrete wavelet transform is implemented by using Quadrature Mirror Filter (QMF) Bank. The non-stationary signal are passed through the finite impulse response (FIR) QMF filtering. The coefficient of wavelet on the time-frequency plane. The continuous wavelet transform is applied to the decomposed sub-bands to estimate the harmonics and interharmonics frequencies and amplitude. The harmonics and interharmonics estimation has been tested on non-stationary signal including transient and capacitor bank switching signal.
Citation
Proceedings of the IEEE Power Engineering Society Transmission and Distribution Conference, 2(ASIA PACIFIC), 775-780, 2002