Distance protection with penetration of Distributed Generation infeed in transmission lines

The grids changed from passive to active grids with Distributed Generation units (DG) allowing the power flow in either direction. The main objectives of DG units are providing a continuous power supply to the load, providing power where the main grid cannot supply electric power, increasing energy...

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Main Author:	Ahmed, Raghad Hatem
Format:	Thesis
Language:	English
Published:	2022
Subjects:	TK Electrical engineering Electronics Nuclear engineering
Online Access:	http://eprints.utm.my/id/eprint/99538/1/RaghadHatemAhmedMSKE2022.pdf
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id	my-utm-ep.99538
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spelling	my-utm-ep.995382023-02-28T07:42:31Z Distance protection with penetration of Distributed Generation infeed in transmission lines 2022 Ahmed, Raghad Hatem TK Electrical engineering. Electronics Nuclear engineering The grids changed from passive to active grids with Distributed Generation units (DG) allowing the power flow in either direction. The main objectives of DG units are providing a continuous power supply to the load, providing power where the main grid cannot supply electric power, increasing energy efficiency, improving voltage profile, reducing line losses, reducing the emission of pollutants, improving the system voltage stability, and improving system reliability. However, DG connections give significant influence on the protection coordination. When DGs are connected to the same network, the protection devices will be able to detect and sense the flow of fault currents in different directions. Without DG, the only source of short circuit current was the grid, and protection systems were designed accordingly. The operation of protective devices would be affected by the changes in the fault current level in the power system. The integration of DG into protective equipment could cause reverse power flow, false tripping, loss of protective devices grading, and blinding of protection. In this research, a new distance relay model built using MATLAB Simulink is proposed to compensate the effect of DG integration with the distribution grid. A simple communication-based scheme for accurately calculating the distance to fault in the presence of infeed is proposed. The proposed model is tested by different faults location, different fault arc resistance, and different penetration levels of DG. The proposed protection communication has high accuracy to trip the faults, the fault is cleared by the distance relay in case of distance relay cannot sense the fault, the overcurrent will trip the circuit and the system maintain in operation state, the proposed distance relay is not affected by the infeed in case of the fault present in zone two. 2022 Thesis http://eprints.utm.my/id/eprint/99538/ http://eprints.utm.my/id/eprint/99538/1/RaghadHatemAhmedMSKE2022.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:149945 masters Universiti Teknologi Malaysia, Faculty of Engineering - School of Electrical Engineering Faculty of Engineering - School 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 Ahmed, Raghad Hatem Distance protection with penetration of Distributed Generation infeed in transmission lines
description	The grids changed from passive to active grids with Distributed Generation units (DG) allowing the power flow in either direction. The main objectives of DG units are providing a continuous power supply to the load, providing power where the main grid cannot supply electric power, increasing energy efficiency, improving voltage profile, reducing line losses, reducing the emission of pollutants, improving the system voltage stability, and improving system reliability. However, DG connections give significant influence on the protection coordination. When DGs are connected to the same network, the protection devices will be able to detect and sense the flow of fault currents in different directions. Without DG, the only source of short circuit current was the grid, and protection systems were designed accordingly. The operation of protective devices would be affected by the changes in the fault current level in the power system. The integration of DG into protective equipment could cause reverse power flow, false tripping, loss of protective devices grading, and blinding of protection. In this research, a new distance relay model built using MATLAB Simulink is proposed to compensate the effect of DG integration with the distribution grid. A simple communication-based scheme for accurately calculating the distance to fault in the presence of infeed is proposed. The proposed model is tested by different faults location, different fault arc resistance, and different penetration levels of DG. The proposed protection communication has high accuracy to trip the faults, the fault is cleared by the distance relay in case of distance relay cannot sense the fault, the overcurrent will trip the circuit and the system maintain in operation state, the proposed distance relay is not affected by the infeed in case of the fault present in zone two.
format	Thesis
qualification_level	Master's degree
author	Ahmed, Raghad Hatem
author_facet	Ahmed, Raghad Hatem
author_sort	Ahmed, Raghad Hatem
title	Distance protection with penetration of Distributed Generation infeed in transmission lines
title_short	Distance protection with penetration of Distributed Generation infeed in transmission lines
title_full	Distance protection with penetration of Distributed Generation infeed in transmission lines
title_fullStr	Distance protection with penetration of Distributed Generation infeed in transmission lines
title_full_unstemmed	Distance protection with penetration of Distributed Generation infeed in transmission lines
title_sort	distance protection with penetration of distributed generation infeed in transmission lines
granting_institution	Universiti Teknologi Malaysia, Faculty of Engineering - School of Electrical Engineering
granting_department	Faculty of Engineering - School of Electrical Engineering
publishDate	2022
url	http://eprints.utm.my/id/eprint/99538/1/RaghadHatemAhmedMSKE2022.pdf
_version_	1776100614643646464

Distance protection with penetration of Distributed Generation infeed in transmission lines

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