Universiti Teknologi Malaysia Institutional Repository

Power quality analysis using linear time-frequency distribution

Abdullah, Abdul Rahim and Sha'ameri, Ahmad Zuri (2008) Power quality analysis using linear time-frequency distribution. In: IEEE International Conference on Power and Energy, 2008, Johor.


Official URL: http://dx.doi.org/10.1109/PECON.2008.4762490


This paper presents the implementation of linear time-frequency distribution (TFD) techniques to analyze power quality signals. The power quality signals are swell, sag, interruption, transient, harmonic, interharmonic, notching and normal voltage based on IEEE Std. 1159-1995. The time-frequency analysis techniques selected are spectrogram and Gabor transform. From the time-frequency representation (TFR) obtained, the signal parameters are estimated to identify the signal characteristics. Identified signal characteristics that are used as input to a classifier includes the average of root mean square (RMS) voltage, total waveform distortion, total harmonic distortion and total nonharmonic distortion and duration of swell, sag, interruption and transient. From the linear time-frequency analysis techniques used, the optimal technique is chosen in terms of accuracy, computation complexity and memory size.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:Power quality signal, spectrogram, gabor transform, time-frequency analysis
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions:Electrical Engineering
ID Code:15978
Deposited By: Siti Khairiyah Nordin
Deposited On:18 Oct 2011 09:56
Last Modified:18 Oct 2011 09:56

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