Transformer performance model under power quality environment

The widespread use of static rectification and energy efficient equipment in end user loads result in a dramatic increase in harmonic content injection towards transformers connected to upstream power system. Now, due to modern developments, energy efficient equipment, such as compact fluorescent la...

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Main Author:	Thian Lim, Gary Soh
Format:	Thesis
Language:	English
Published:	2015
Subjects:	TK Electrical engineering Electronics Nuclear engineering
Online Access:	http://eprints.utm.my/id/eprint/54598/1/GarySohThianLimMFKE2015.pdf
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id	my-utm-ep.54598
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spelling	my-utm-ep.545982020-10-20T02:42:55Z Transformer performance model under power quality environment 2015-06 Thian Lim, Gary Soh TK Electrical engineering. Electronics Nuclear engineering The widespread use of static rectification and energy efficient equipment in end user loads result in a dramatic increase in harmonic content injection towards transformers connected to upstream power system. Now, due to modern developments, energy efficient equipment, such as compact fluorescent lamps are easily available. The use of energy efficient equipment increases rapidly in our country as saving of electrical energy is the main target of end users and also electric utility. Meanwhile, these types of equipment contribute to power quality problems such as harmonic distortion. The harmonic content generated by load causes the transformer to operate in higher power rating and may cause transformer operating failure in the long term. This work was initially started with experimentation of transformer performance analysis in the presence of harmonic events. The objective of this research is to develop the total harmonic distortion and efficiency model based on data analysis. Experimental tests are performed to obtain transformer parameter. Harmonic loads are modelled by utilizing the unique waveform characteristic of each individual harmonic load type through image processing and curve fitting methods. Harmonic current injection model has been proposed and applied using transformer model through the experimental parameter in MATLAB Simulink. The comparison between harmonic current injection model with the measured load in terms of true RMS current, apparent power, active power, true power factor and total harmonic distortion current have been done. An analysis has also been done on experimental data by comparing the efficiency of transformer with and without harmonic distortion on identical load type. The developed models for analysis of transformer efficiency with harmonic distortion indicate goodness of fit with R-square value close to 1 and Root Mean Square Error of less than 1. 2015-06 Thesis http://eprints.utm.my/id/eprint/54598/ http://eprints.utm.my/id/eprint/54598/1/GarySohThianLimMFKE2015.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:86197 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 Thian Lim, Gary Soh Transformer performance model under power quality environment
description	The widespread use of static rectification and energy efficient equipment in end user loads result in a dramatic increase in harmonic content injection towards transformers connected to upstream power system. Now, due to modern developments, energy efficient equipment, such as compact fluorescent lamps are easily available. The use of energy efficient equipment increases rapidly in our country as saving of electrical energy is the main target of end users and also electric utility. Meanwhile, these types of equipment contribute to power quality problems such as harmonic distortion. The harmonic content generated by load causes the transformer to operate in higher power rating and may cause transformer operating failure in the long term. This work was initially started with experimentation of transformer performance analysis in the presence of harmonic events. The objective of this research is to develop the total harmonic distortion and efficiency model based on data analysis. Experimental tests are performed to obtain transformer parameter. Harmonic loads are modelled by utilizing the unique waveform characteristic of each individual harmonic load type through image processing and curve fitting methods. Harmonic current injection model has been proposed and applied using transformer model through the experimental parameter in MATLAB Simulink. The comparison between harmonic current injection model with the measured load in terms of true RMS current, apparent power, active power, true power factor and total harmonic distortion current have been done. An analysis has also been done on experimental data by comparing the efficiency of transformer with and without harmonic distortion on identical load type. The developed models for analysis of transformer efficiency with harmonic distortion indicate goodness of fit with R-square value close to 1 and Root Mean Square Error of less than 1.
format	Thesis
qualification_level	Master's degree
author	Thian Lim, Gary Soh
author_facet	Thian Lim, Gary Soh
author_sort	Thian Lim, Gary Soh
title	Transformer performance model under power quality environment
title_short	Transformer performance model under power quality environment
title_full	Transformer performance model under power quality environment
title_fullStr	Transformer performance model under power quality environment
title_full_unstemmed	Transformer performance model under power quality environment
title_sort	transformer performance model under power quality environment
granting_institution	Universiti Teknologi Malaysia, Faculty of Electrical Engineering
granting_department	Faculty of Electrical Engineering
publishDate	2015
url	http://eprints.utm.my/id/eprint/54598/1/GarySohThianLimMFKE2015.pdf
_version_	1747817685314437120

Transformer performance model under power quality environment

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