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Comparison between duval triangle and duval pentagon method for dissolved gas analysis of power transformer

Power transformers are the highest value of the equipment installed in high-voltage substations, comprising up to 60% of total investment. There is a need for economic and financial reports to be provided to make asset decisions and ensuring balance between investment, maintenance costs and operatio...

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Main Author: Ibrahim, Sharal Aida
Format: Thesis
Language:English
Published: 2018
Subjects:
TK Electrical engineering. Electronics Nuclear engineering
Online Access:http://eprints.utm.my/id/eprint/86988/1/SharalAidaIbrahimMSKE2018.pdf
http://eprints.utm.my/id/eprint/86988/
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spelling my.utm.869882020-10-31T12:16:33Z http://eprints.utm.my/id/eprint/86988/ Comparison between duval triangle and duval pentagon method for dissolved gas analysis of power transformer Ibrahim, Sharal Aida TK Electrical engineering. Electronics Nuclear engineering Power transformers are the highest value of the equipment installed in high-voltage substations, comprising up to 60% of total investment. There is a need for economic and financial reports to be provided to make asset decisions and ensuring balance between investment, maintenance costs and operational performance. Health index (HI) is the most common approach used in determining the condition of the transformers. It is a tool that process information by creating a score that describe the condition of an asset. A comparative analysis is made between HI calculation models that allow the evaluation of the condition of a power transformer. Through this index it is possible to objectively determine the condition of power transformers to make maintenance or reinvestment decisions. Thus, it is possible to detect possible risk assets preventing them from failing, allowing an increase in the life time. Several studies have examined different power transformer condition assessment and life management techniques. These techniques include measuring or monitoring of dissolved gas analysis (DGA) using Duval Triangle method. DGA technique is a reliable method and widely used to detect incipient faults which may occur in transformers such as partial discharge, thermal fault and electrical fault. This paper will focus on DGA using Duval Triangle & Pentagon method. The objective of this paper is to compare and identify between Duval Triangle and Duval Pentagon methods which may provide more accurate interpretation of DGA test result. This comparative study is based on real data provided by Malaysia utility company. The analysis using Duval Pentagon method give the accurate fault analysis and exactly same as the interpretation given by IEC 60599 Standard. An accurate fault analysis using Duval Pentagon Method give a better output of life time prediction, types of possible faults and recommendations for future maintenance action can be achieved. 2018 Thesis NonPeerReviewed application/pdf en http://eprints.utm.my/id/eprint/86988/1/SharalAidaIbrahimMSKE2018.pdf Ibrahim, Sharal Aida (2018) Comparison between duval triangle and duval pentagon method for dissolved gas analysis of power transformer. Masters thesis, Universiti Teknologi Malaysia, Faculty of Engineering - School of Electrical Engineering. http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:132666
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
language English
topic TK Electrical engineering. Electronics Nuclear engineering
spellingShingle TK Electrical engineering. Electronics Nuclear engineering
Ibrahim, Sharal Aida
Comparison between duval triangle and duval pentagon method for dissolved gas analysis of power transformer
description Power transformers are the highest value of the equipment installed in high-voltage substations, comprising up to 60% of total investment. There is a need for economic and financial reports to be provided to make asset decisions and ensuring balance between investment, maintenance costs and operational performance. Health index (HI) is the most common approach used in determining the condition of the transformers. It is a tool that process information by creating a score that describe the condition of an asset. A comparative analysis is made between HI calculation models that allow the evaluation of the condition of a power transformer. Through this index it is possible to objectively determine the condition of power transformers to make maintenance or reinvestment decisions. Thus, it is possible to detect possible risk assets preventing them from failing, allowing an increase in the life time. Several studies have examined different power transformer condition assessment and life management techniques. These techniques include measuring or monitoring of dissolved gas analysis (DGA) using Duval Triangle method. DGA technique is a reliable method and widely used to detect incipient faults which may occur in transformers such as partial discharge, thermal fault and electrical fault. This paper will focus on DGA using Duval Triangle & Pentagon method. The objective of this paper is to compare and identify between Duval Triangle and Duval Pentagon methods which may provide more accurate interpretation of DGA test result. This comparative study is based on real data provided by Malaysia utility company. The analysis using Duval Pentagon method give the accurate fault analysis and exactly same as the interpretation given by IEC 60599 Standard. An accurate fault analysis using Duval Pentagon Method give a better output of life time prediction, types of possible faults and recommendations for future maintenance action can be achieved.
format Thesis
author Ibrahim, Sharal Aida
author_facet Ibrahim, Sharal Aida
author_sort Ibrahim, Sharal Aida
title Comparison between duval triangle and duval pentagon method for dissolved gas analysis of power transformer
title_short Comparison between duval triangle and duval pentagon method for dissolved gas analysis of power transformer
title_full Comparison between duval triangle and duval pentagon method for dissolved gas analysis of power transformer
title_fullStr Comparison between duval triangle and duval pentagon method for dissolved gas analysis of power transformer
title_full_unstemmed Comparison between duval triangle and duval pentagon method for dissolved gas analysis of power transformer
title_sort comparison between duval triangle and duval pentagon method for dissolved gas analysis of power transformer
publishDate 2018
url http://eprints.utm.my/id/eprint/86988/1/SharalAidaIbrahimMSKE2018.pdf
http://eprints.utm.my/id/eprint/86988/
http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:132666
_version_ 1683230690101952512
score 13.211869

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