Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/37823
Title: Hybrid time-frequency domain of analysis on power quality disturbances
Authors: Ngan, HW 
Lau, ECC
Keywords: Power quality
Time-frequency domain
Wavelet packet transform
Issue Date: 2009
Source: 8th IET International Conference on Advances in Power System Control, Operation and Management 2009 : APSCOM 2009 : Hong Kong, China, 8-11 November 2009, p. 1-6 How to cite?
Abstract: Power quality disturbance imposes problems to the reliability of electrical distribution system. Traditional method of detecting these disturbances by using Fast Fourier Transformation (FFT) has drawback of limitation for detection of stationary disturbances only. Wavelet Packet Transform (WPT) is commonly used to detect the non-stationary disturbances but the exact frequency content cannot be seen. In this paper, a hybrid time-frequency approach is envisaged to reserve the respective domain information. Simulation results show that the intrinsic problem of FFT and WPT is resolved.
URI: http://hdl.handle.net/10397/37823
DOI: 10.1049/cp.2009.1823
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