Digital protection scheme for distance relaying of a six-phase power system

The objectives of this study are to investigate various algorithms for digital relaying that can be used in six-phase system and to develop a laboratory replica of six-phase system from selected three-phase double-circuit of Tenaga Nasional Berhad (TNB) network. A novel algorithm which is called bou...

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Main Author:	Ghainani, Alireza Tavakoli
Format:	Thesis
Language:	English
Published:	2010
Subjects:	TK Electrical engineering Electronics Nuclear engineering
Online Access:	http://eprints.utm.my/id/eprint/18756/21/AlirezaTavakoliGhainaniPFKE2010.pdf
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spelling	my-utm-ep.187562017-09-17T08:29:14Z Digital protection scheme for distance relaying of a six-phase power system 2010 Ghainani, Alireza Tavakoli TK Electrical engineering. Electronics Nuclear engineering The objectives of this study are to investigate various algorithms for digital relaying that can be used in six-phase system and to develop a laboratory replica of six-phase system from selected three-phase double-circuit of Tenaga Nasional Berhad (TNB) network. A novel algorithm which is called bounded data uncertainties (BDU) for digital relaying is proposed. The proposed method is an enhanced least-square algorithm, which unlike classical least-square, it allows perturbations in data matrix and measurements or observations. MATLAB programs have been developed to compare the BDU with the Discrete Fourier Transform (DFT) algorithm. The results show the superiority of BDU over DFT method. An existing three-phase double-circuit line between Kuala Krai (KKRI) and Gua Musang (GMSG) substations has been selected as a case study for conversion to six-phase single-circuit system. Using the configuration line data provided by TNB, parameters of six-phase line are calculated. The calculation of parameters of line is also carried out using software package PSCAD/EMTDC. The results from MATLAB and PSCAD programs have revealed that the positive-sequence inductive reactance of six-phase single-circuit is higher than the three-phase double-circuit line. Furthermore, the results of MATLAB show that the maximum fault current occurs for phases a-b-d-f fault. Based on the maximum fault current, the necessary components have been obtained to construct the six-phase prototype. The prototype is successfully developed which resembles six-phase line of the KKRI-GMSG. The phase difference of voltages of the six-phase prototype has been successfully validated by LabVIEW software package. The prototype is unique in Malaysia and it is an invaluable tool which can be used by power utilities and graduate students to do research work in six-phase system. 2010 Thesis http://eprints.utm.my/id/eprint/18756/ http://eprints.utm.my/id/eprint/18756/21/AlirezaTavakoliGhainaniPFKE2010.pdf application/pdf en public phd doctoral 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 Ghainani, Alireza Tavakoli Digital protection scheme for distance relaying of a six-phase power system
description	The objectives of this study are to investigate various algorithms for digital relaying that can be used in six-phase system and to develop a laboratory replica of six-phase system from selected three-phase double-circuit of Tenaga Nasional Berhad (TNB) network. A novel algorithm which is called bounded data uncertainties (BDU) for digital relaying is proposed. The proposed method is an enhanced least-square algorithm, which unlike classical least-square, it allows perturbations in data matrix and measurements or observations. MATLAB programs have been developed to compare the BDU with the Discrete Fourier Transform (DFT) algorithm. The results show the superiority of BDU over DFT method. An existing three-phase double-circuit line between Kuala Krai (KKRI) and Gua Musang (GMSG) substations has been selected as a case study for conversion to six-phase single-circuit system. Using the configuration line data provided by TNB, parameters of six-phase line are calculated. The calculation of parameters of line is also carried out using software package PSCAD/EMTDC. The results from MATLAB and PSCAD programs have revealed that the positive-sequence inductive reactance of six-phase single-circuit is higher than the three-phase double-circuit line. Furthermore, the results of MATLAB show that the maximum fault current occurs for phases a-b-d-f fault. Based on the maximum fault current, the necessary components have been obtained to construct the six-phase prototype. The prototype is successfully developed which resembles six-phase line of the KKRI-GMSG. The phase difference of voltages of the six-phase prototype has been successfully validated by LabVIEW software package. The prototype is unique in Malaysia and it is an invaluable tool which can be used by power utilities and graduate students to do research work in six-phase system.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Ghainani, Alireza Tavakoli
author_facet	Ghainani, Alireza Tavakoli
author_sort	Ghainani, Alireza Tavakoli
title	Digital protection scheme for distance relaying of a six-phase power system
title_short	Digital protection scheme for distance relaying of a six-phase power system
title_full	Digital protection scheme for distance relaying of a six-phase power system
title_fullStr	Digital protection scheme for distance relaying of a six-phase power system
title_full_unstemmed	Digital protection scheme for distance relaying of a six-phase power system
title_sort	digital protection scheme for distance relaying of a six-phase power system
granting_institution	Universiti Teknologi Malaysia, Faculty of Electrical Engineering
granting_department	Faculty of Electrical Engineering
publishDate	2010
url	http://eprints.utm.my/id/eprint/18756/21/AlirezaTavakoliGhainaniPFKE2010.pdf
_version_	1747815351152803840

Digital protection scheme for distance relaying of a six-phase power system

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