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Detection of voltage disturbances in power quality using wavelet transforms

Ramlee, Nor Asrina (2012) Detection of voltage disturbances in power quality using wavelet transforms. Masters thesis, Universiti Tun Hussein Onn Malaysia.

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Abstract

Power quality has cause a great concern to electric utilities with the growing use of sensitive and susceptive electronic and computing equipment. The best analysis on power quality is vital to provide better service to customers. This paper presents the detection of voltage sag and voltage swell event using four types of mother wavelet namely Haar, Dmey, Daubechies and Symlet to identify the most accurate mother. The method is developed by applying time domain signal analysis using Discrete Wavelet Transform (DWT) as a detection tool in MATLAB. The actual interrupted signals were obtained from 22kv transmission line in Skudai, Johor Bahru. They will be decomposed through the wavelet mothers. The best mother is the one that capable to detect the time location of the event accurately.

Item Type: Thesis (Masters)
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK1001-1841 Production of electric energy or power. Powerplants. Central stations
Depositing User: Normajihan Abd. Rahman
Date Deposited: 07 Nov 2012 08:16
Last Modified: 07 Nov 2012 08:16
URI: http://eprints.uthm.edu.my/id/eprint/2930
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