Modified walsh transform for harmonic assessment

Harmonic assessment at end users through energy meter is a part of power quality monitoring to determine harmonics contamination level in distribution network. Integration of harmonics extraction technique with energy meter requires two considerations which are measurement accuracy of the technique...

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Main Author:	Abdul Aziz, Ahmad Fuad
Format:	Thesis
Language:	English
Published:	2014
Subjects:	TK Electrical engineering Electronics Nuclear engineering
Online Access:	http://eprints.utm.my/id/eprint/78108/1/AhmadFuadAbdulAzizMFKE20141.pdf
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id	my-utm-ep.78108
record_format	uketd_dc
spelling	my-utm-ep.781082018-07-25T08:17:31Z Modified walsh transform for harmonic assessment 2014-08 Abdul Aziz, Ahmad Fuad TK Electrical engineering. Electronics Nuclear engineering Harmonic assessment at end users through energy meter is a part of power quality monitoring to determine harmonics contamination level in distribution network. Integration of harmonics extraction technique with energy meter requires two considerations which are measurement accuracy of the technique and its computational complexity to extract harmonics. These two aspects are main requirements for meter to support the execution of harmonics extraction since it is operated under low-cost microcontroller. In harmonic extraction of Fast Fourier Transform (FFT), the computation burden is quite high and requires additional hardware installation to support the algorithm’s operation. Therefore, this thesis presents a Modified Walsh Transform algorithm as an alternative harmonic extraction. The proposed algorithm consumes less arithmetic operations than FFT and suitable to be integrated into energy meter. This study involves with extracting distorted current signal into harmonic components, measuring the harmonics magnitude and calculating Root-Mean-Square (RMS), Total Harmonic Distortion (THD) and Distortion Power Factor (DPF) as well as computational analysis between FFT and Modified Walsh Transform algorithms. The result from simulation indicates that the proposed algorithm has 99% of accuracy percentage with more consistent result than FFT. Moreover, the arithmetic operation in Modified Walsh Transform is less than FFT to show that less computation burden consumed by the proposed algorithm. Meanwhile, a laboratory experiment has been conducted to demonstrate consideration of DPF in harmonics assessment and power factor measurement as complied in IEEE Std.1459-2010. 2014-08 Thesis http://eprints.utm.my/id/eprint/78108/ http://eprints.utm.my/id/eprint/78108/1/AhmadFuadAbdulAzizMFKE20141.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:80587 masters Universiti Teknologi Malaysia, Faculty of Electrical Engineering Faculty of Electrical Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TK Electrical engineering Electronics Nuclear engineering
spellingShingle	TK Electrical engineering Electronics Nuclear engineering Abdul Aziz, Ahmad Fuad Modified walsh transform for harmonic assessment
description	Harmonic assessment at end users through energy meter is a part of power quality monitoring to determine harmonics contamination level in distribution network. Integration of harmonics extraction technique with energy meter requires two considerations which are measurement accuracy of the technique and its computational complexity to extract harmonics. These two aspects are main requirements for meter to support the execution of harmonics extraction since it is operated under low-cost microcontroller. In harmonic extraction of Fast Fourier Transform (FFT), the computation burden is quite high and requires additional hardware installation to support the algorithm’s operation. Therefore, this thesis presents a Modified Walsh Transform algorithm as an alternative harmonic extraction. The proposed algorithm consumes less arithmetic operations than FFT and suitable to be integrated into energy meter. This study involves with extracting distorted current signal into harmonic components, measuring the harmonics magnitude and calculating Root-Mean-Square (RMS), Total Harmonic Distortion (THD) and Distortion Power Factor (DPF) as well as computational analysis between FFT and Modified Walsh Transform algorithms. The result from simulation indicates that the proposed algorithm has 99% of accuracy percentage with more consistent result than FFT. Moreover, the arithmetic operation in Modified Walsh Transform is less than FFT to show that less computation burden consumed by the proposed algorithm. Meanwhile, a laboratory experiment has been conducted to demonstrate consideration of DPF in harmonics assessment and power factor measurement as complied in IEEE Std.1459-2010.
format	Thesis
qualification_level	Master's degree
author	Abdul Aziz, Ahmad Fuad
author_facet	Abdul Aziz, Ahmad Fuad
author_sort	Abdul Aziz, Ahmad Fuad
title	Modified walsh transform for harmonic assessment
title_short	Modified walsh transform for harmonic assessment
title_full	Modified walsh transform for harmonic assessment
title_fullStr	Modified walsh transform for harmonic assessment
title_full_unstemmed	Modified walsh transform for harmonic assessment
title_sort	modified walsh transform for harmonic assessment
granting_institution	Universiti Teknologi Malaysia, Faculty of Electrical Engineering
granting_department	Faculty of Electrical Engineering
publishDate	2014
url	http://eprints.utm.my/id/eprint/78108/1/AhmadFuadAbdulAzizMFKE20141.pdf
_version_	1747817908942143488

Modified walsh transform for harmonic assessment

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