Power quality analysis and mitigation

Due to increasing complexity in the power system, voltage sags and swells are now becoming one of the most significant power quality problems. Voltage sag is a short reduction voltage from nominal voltage, occurs in a short time, voltage swell is an increase in the r.m.s voltage from its nomin...

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Main Author:	Charles, Udechukwu Chukwuemeka
Format:	Thesis
Language:	English English English
Published:	2011
Subjects:	TK Electrical engineering Electronics Nuclear engineering
Online Access:	http://eprints.uthm.edu.my/2867/1/24p%20UDECHUKWU%20CHUKWUEMEKA%20CHARLES.pdf http://eprints.uthm.edu.my/2867/2/UDECHUKWU%20CHUKWUEMEKA%20CHARLES%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/2867/3/UDECHUKWU%20CHUKWUEMEKA%20CHARLES%20WATERMARK.pdf
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id	my-uthm-ep.2867
record_format	uketd_dc
spelling	my-uthm-ep.28672021-11-02T00:42:24Z Power quality analysis and mitigation 2011-05 Charles, Udechukwu Chukwuemeka TK Electrical engineering. Electronics Nuclear engineering TK1001-1841 Production of electric energy or power. Powerplants. Central stations Due to increasing complexity in the power system, voltage sags and swells are now becoming one of the most significant power quality problems. Voltage sag is a short reduction voltage from nominal voltage, occurs in a short time, voltage swell is an increase in the r.m.s voltage from its nominal voltage; they are bound to have a greater impact on the industrial customers. If the voltage sags exceed two to three cycles, then manufacturing systems making use of sensitive electronic equipments are likely to be affected leading to major problems. It ultimately leads to wastage of resources (both material and human) as well as financial losses. The increasing competition in the market and the declining profits has made it pertinent for the industries to realize the significance of high-power quality. This is possible only by ensuring that uninterrupted flow of power is maintained at proper voltage levels. Electric utilities are looking for solutions to ensure high quality power supply to their customers, a lot of solutions have been developed, but this project tends look at the solving the problems by using custom power devices such as Dynamic Voltage Restorer (DVR) and Distribution Static compensator (D-STATCOM). The Dynamic Voltage Restorer appears to be an especially good solution in the current scenario. This work describes the techniques of correcting the supply voltage sag and voltage swell in a distributed system. At present, a wide range of very flexible controllers, which capitalize on newly available power electronics components, are emerging for custom power applications. Among these, the distribution static compensator and the dynamic voltage restorer are most effective devices, both of them based on the VSC principle. A DVR injects a voltage in series with the system voltage and a D�STATCOM injects a current into the system to correct the voltage sag, swell and interruption. Comprehensive results are presented to assess the performance of each device as a potential custom power solution 2011-05 Thesis http://eprints.uthm.edu.my/2867/ http://eprints.uthm.edu.my/2867/1/24p%20UDECHUKWU%20CHUKWUEMEKA%20CHARLES.pdf text en public http://eprints.uthm.edu.my/2867/2/UDECHUKWU%20CHUKWUEMEKA%20CHARLES%20COPYRIGHT%20DECLARATION.pdf text en staffonly http://eprints.uthm.edu.my/2867/3/UDECHUKWU%20CHUKWUEMEKA%20CHARLES%20WATERMARK.pdf text en validuser mphil masters Universiti Tun Hussein Onn Malaysia Fakulti Kejuruteraan Elektrik dan Elektronik
institution	Universiti Tun Hussein Onn Malaysia
collection	UTHM Institutional Repository
language	English English English
topic	TK Electrical engineering Electronics Nuclear engineering TK Electrical engineering Electronics Nuclear engineering
spellingShingle	TK Electrical engineering Electronics Nuclear engineering TK Electrical engineering Electronics Nuclear engineering Charles, Udechukwu Chukwuemeka Power quality analysis and mitigation
description	Due to increasing complexity in the power system, voltage sags and swells are now becoming one of the most significant power quality problems. Voltage sag is a short reduction voltage from nominal voltage, occurs in a short time, voltage swell is an increase in the r.m.s voltage from its nominal voltage; they are bound to have a greater impact on the industrial customers. If the voltage sags exceed two to three cycles, then manufacturing systems making use of sensitive electronic equipments are likely to be affected leading to major problems. It ultimately leads to wastage of resources (both material and human) as well as financial losses. The increasing competition in the market and the declining profits has made it pertinent for the industries to realize the significance of high-power quality. This is possible only by ensuring that uninterrupted flow of power is maintained at proper voltage levels. Electric utilities are looking for solutions to ensure high quality power supply to their customers, a lot of solutions have been developed, but this project tends look at the solving the problems by using custom power devices such as Dynamic Voltage Restorer (DVR) and Distribution Static compensator (D-STATCOM). The Dynamic Voltage Restorer appears to be an especially good solution in the current scenario. This work describes the techniques of correcting the supply voltage sag and voltage swell in a distributed system. At present, a wide range of very flexible controllers, which capitalize on newly available power electronics components, are emerging for custom power applications. Among these, the distribution static compensator and the dynamic voltage restorer are most effective devices, both of them based on the VSC principle. A DVR injects a voltage in series with the system voltage and a D�STATCOM injects a current into the system to correct the voltage sag, swell and interruption. Comprehensive results are presented to assess the performance of each device as a potential custom power solution
format	Thesis
qualification_name	Master of Philosophy (M.Phil.)
qualification_level	Master's degree
author	Charles, Udechukwu Chukwuemeka
author_facet	Charles, Udechukwu Chukwuemeka
author_sort	Charles, Udechukwu Chukwuemeka
title	Power quality analysis and mitigation
title_short	Power quality analysis and mitigation
title_full	Power quality analysis and mitigation
title_fullStr	Power quality analysis and mitigation
title_full_unstemmed	Power quality analysis and mitigation
title_sort	power quality analysis and mitigation
granting_institution	Universiti Tun Hussein Onn Malaysia
granting_department	Fakulti Kejuruteraan Elektrik dan Elektronik
publishDate	2011
url	http://eprints.uthm.edu.my/2867/1/24p%20UDECHUKWU%20CHUKWUEMEKA%20CHARLES.pdf http://eprints.uthm.edu.my/2867/2/UDECHUKWU%20CHUKWUEMEKA%20CHARLES%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/2867/3/UDECHUKWU%20CHUKWUEMEKA%20CHARLES%20WATERMARK.pdf
_version_	1747830996607172608

Power quality analysis and mitigation

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