Impact Of Distributed Generation On Power System Protection

This dissertation describes a simulation study of the impact of distributed generation (DG) interconnection to an existing distribution system of an Iraq system. The increase load demand in many countries pushes the electrical company to use DG technology to meet their load. From the literature revi...

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Main Author:	Ahmed, Dawood Saleem
Format:	Thesis
Language:	English English
Published:	2016
Subjects:	T Technology (General)
Online Access:	http://eprints.utem.edu.my/id/eprint/18385/1/Impact%20Of%20Distributed%20Generation%20On%20Power%20System%20Protection.pdf http://eprints.utem.edu.my/id/eprint/18385/2/Impact%20Of%20Distributed%20Generation%20On%20Power%20System%20Protection.pdf
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id	my-utem-ep.18385
record_format	uketd_dc
institution	Universiti Teknikal Malaysia Melaka
collection	UTeM Repository
language	English English
advisor	Zainuddin, Hidayat
topic	T Technology (General) T Technology (General)
spellingShingle	T Technology (General) T Technology (General) Ahmed, Dawood Saleem Impact Of Distributed Generation On Power System Protection
description	This dissertation describes a simulation study of the impact of distributed generation (DG) interconnection to an existing distribution system of an Iraq system. The increase load demand in many countries pushes the electrical company to use DG technology to meet their load. From the literature review, it was found in spite of many positive effects of DG such as reduce the power losses and reduce voltage drop; the parallel operation of DG with an existing distribution system has many technical problems. One of the most significant issues of parallel operation is the change of fault level and suitability of existing protection system that indeed needs to be maintained within acceptable limits as defined in the international standards. Therefore, this dissertation is performed to investigate the impact of DG based synchronous generator driven by diesel engine on both the fault level and protection system. A small part of the distribution system in Baghdad capital-Iraq which the DG is currently interconnected at 11kV bus has been chosen and modeled using DIgSILENT PowerFactory version 15. The impacts of DG installation at three different locations, i.e. two possible locations which are 33kV and 132kV buses as well as the actual location have been investigated. The dissertation basically includes two investigations which are; examine the change in the fault level without the presence of DG and with DG interconnection at three interconnection locations by executing three-phase fault at each bus of the network as well as investigate the suitability of protection devices through performing single-line-to-ground and three-phase faults at 33kV and 11kV feeders within the distribution system. The results show that after an extensive simulation study, the increase in short circuit level is noticeable at the buses where the DG is interconnected and the protection performance of unidirectional overcurrent relay suffer from blinding and sympathetic tripping as well as the under reach of distance relay, therefore, a series remedy is needed for safety purposes and to reliability of the system.
format	Thesis
qualification_name	Master of Philosophy (M.Phil.)
qualification_level	Master's degree
author	Ahmed, Dawood Saleem
author_facet	Ahmed, Dawood Saleem
author_sort	Ahmed, Dawood Saleem
title	Impact Of Distributed Generation On Power System Protection
title_short	Impact Of Distributed Generation On Power System Protection
title_full	Impact Of Distributed Generation On Power System Protection
title_fullStr	Impact Of Distributed Generation On Power System Protection
title_full_unstemmed	Impact Of Distributed Generation On Power System Protection
title_sort	impact of distributed generation on power system protection
granting_institution	Universiti Teknikal Malaysia Melaka
granting_department	Faculty Of Electrical Engineering
publishDate	2016
url	http://eprints.utem.edu.my/id/eprint/18385/1/Impact%20Of%20Distributed%20Generation%20On%20Power%20System%20Protection.pdf http://eprints.utem.edu.my/id/eprint/18385/2/Impact%20Of%20Distributed%20Generation%20On%20Power%20System%20Protection.pdf
_version_	1747833928453980160
spelling	my-utem-ep.183852021-10-08T13:25:01Z Impact Of Distributed Generation On Power System Protection 2016 Ahmed, Dawood Saleem T Technology (General) TK Electrical engineering. Electronics Nuclear engineering This dissertation describes a simulation study of the impact of distributed generation (DG) interconnection to an existing distribution system of an Iraq system. The increase load demand in many countries pushes the electrical company to use DG technology to meet their load. From the literature review, it was found in spite of many positive effects of DG such as reduce the power losses and reduce voltage drop; the parallel operation of DG with an existing distribution system has many technical problems. One of the most significant issues of parallel operation is the change of fault level and suitability of existing protection system that indeed needs to be maintained within acceptable limits as defined in the international standards. Therefore, this dissertation is performed to investigate the impact of DG based synchronous generator driven by diesel engine on both the fault level and protection system. A small part of the distribution system in Baghdad capital-Iraq which the DG is currently interconnected at 11kV bus has been chosen and modeled using DIgSILENT PowerFactory version 15. The impacts of DG installation at three different locations, i.e. two possible locations which are 33kV and 132kV buses as well as the actual location have been investigated. The dissertation basically includes two investigations which are; examine the change in the fault level without the presence of DG and with DG interconnection at three interconnection locations by executing three-phase fault at each bus of the network as well as investigate the suitability of protection devices through performing single-line-to-ground and three-phase faults at 33kV and 11kV feeders within the distribution system. The results show that after an extensive simulation study, the increase in short circuit level is noticeable at the buses where the DG is interconnected and the protection performance of unidirectional overcurrent relay suffer from blinding and sympathetic tripping as well as the under reach of distance relay, therefore, a series remedy is needed for safety purposes and to reliability of the system. 2016 Thesis http://eprints.utem.edu.my/id/eprint/18385/ http://eprints.utem.edu.my/id/eprint/18385/1/Impact%20Of%20Distributed%20Generation%20On%20Power%20System%20Protection.pdf text en public http://eprints.utem.edu.my/id/eprint/18385/2/Impact%20Of%20Distributed%20Generation%20On%20Power%20System%20Protection.pdf text en validuser https://plh.utem.edu.my/cgi-bin/koha/opac-detail.pl?biblionumber=100296 mphil masters Universiti Teknikal Malaysia Melaka Faculty Of Electrical Engineering Zainuddin, Hidayat 1. A.R.van C.Warrington, 1977. 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Impact Of Distributed Generation On Power System Protection

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