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The leakage current components as a diagnostic tool to estimate contamination level on high voltage insulators

The current paper presents an alternative and innovative technique to predict the severity of pollution of high voltage insulator using a higher harmonics component with up to the 7th component of leakage current. The leakage current was measured using a current transformer and a shunt resistor. Nex...

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Main Authors:	Salem, A. A., Abd. Rahman, R., Al Gailani, S. A., Kamarudin, M. S., Ahmad, H., Salam, Z.
Format:	Article
Language:	English
Published:	Institute of Electrical and Electronics Engineers Inc. 2020
Subjects:	TK Electrical engineering. Electronics Nuclear engineering
Online Access:	http://eprints.utm.my/id/eprint/87971/1/AliAhmedAli2020_TheLeakageCurrentComponentsasaDiagnosticTool.pdf http://eprints.utm.my/id/eprint/87971/ http://www.dx.doi.org/10.1109/ACCESS.2020.2993630
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spelling	my.utm.879712020-11-30T13:44:01Z http://eprints.utm.my/id/eprint/87971/ The leakage current components as a diagnostic tool to estimate contamination level on high voltage insulators Salem, A. A. Abd. Rahman, R. Al Gailani, S. A. Kamarudin, M. S. Ahmad, H. Salam, Z. TK Electrical engineering. Electronics Nuclear engineering The current paper presents an alternative and innovative technique to predict the severity of pollution of high voltage insulator using a higher harmonics component with up to the 7th component of leakage current. The leakage current was measured using a current transformer and a shunt resistor. Next, laboratory tests were conducted on glass and porcelain insulators with artificial pollution under salt-fog pollution state which is further represented by three levels, namely light, medium, and high contamination. In this case, the formulation of a new severity of harmonic index refers to a ratio of the sum of 5th and 7th to the 3rd harmonic component. More importantly, the new index managed to provide more accurate results when used as a diagnostic tool for the levels of pollution, compared to the ratio of the total harmonic distortion (THD) to the number of odd harmonics components (n) as the boundaries. In this case, the insulators were found to be in a clean and normal condition when the K(5+7)/3 value was greater than 3%. Contrastingly, the insulators were in an extreme condition when the K(5+7)/3 was lower than 3%. Nevertheless, there is a high probability of a flashover in glass and porcelain insulators if the K(5+7)/3 value is less than 2%. The present study shows the possibility of utilizing the value of strange harmonics up to the 7th component of leakage current as the parameter for the monitoring of leakage current in overhead insulators in the presence of contamination. Overall, it can be concluded that the 3rd, 5th, and 7th harmonics details extracted from the leakage current act as a good indicator for the level of contamination. Institute of Electrical and Electronics Engineers Inc. 2020 Article PeerReviewed application/pdf en http://eprints.utm.my/id/eprint/87971/1/AliAhmedAli2020_TheLeakageCurrentComponentsasaDiagnosticTool.pdf Salem, A. A. and Abd. Rahman, R. and Al Gailani, S. A. and Kamarudin, M. S. and Ahmad, H. and Salam, Z. (2020) The leakage current components as a diagnostic tool to estimate contamination level on high voltage insulators. IEEE Access, 8 . pp. 92514-92528. ISSN 2169-3536 http://www.dx.doi.org/10.1109/ACCESS.2020.2993630 DOI: 10.1109/ACCESS.2020.2993630
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 Salem, A. A. Abd. Rahman, R. Al Gailani, S. A. Kamarudin, M. S. Ahmad, H. Salam, Z. The leakage current components as a diagnostic tool to estimate contamination level on high voltage insulators
description	The current paper presents an alternative and innovative technique to predict the severity of pollution of high voltage insulator using a higher harmonics component with up to the 7th component of leakage current. The leakage current was measured using a current transformer and a shunt resistor. Next, laboratory tests were conducted on glass and porcelain insulators with artificial pollution under salt-fog pollution state which is further represented by three levels, namely light, medium, and high contamination. In this case, the formulation of a new severity of harmonic index refers to a ratio of the sum of 5th and 7th to the 3rd harmonic component. More importantly, the new index managed to provide more accurate results when used as a diagnostic tool for the levels of pollution, compared to the ratio of the total harmonic distortion (THD) to the number of odd harmonics components (n) as the boundaries. In this case, the insulators were found to be in a clean and normal condition when the K(5+7)/3 value was greater than 3%. Contrastingly, the insulators were in an extreme condition when the K(5+7)/3 was lower than 3%. Nevertheless, there is a high probability of a flashover in glass and porcelain insulators if the K(5+7)/3 value is less than 2%. The present study shows the possibility of utilizing the value of strange harmonics up to the 7th component of leakage current as the parameter for the monitoring of leakage current in overhead insulators in the presence of contamination. Overall, it can be concluded that the 3rd, 5th, and 7th harmonics details extracted from the leakage current act as a good indicator for the level of contamination.
format	Article
author	Salem, A. A. Abd. Rahman, R. Al Gailani, S. A. Kamarudin, M. S. Ahmad, H. Salam, Z.
author_facet	Salem, A. A. Abd. Rahman, R. Al Gailani, S. A. Kamarudin, M. S. Ahmad, H. Salam, Z.
author_sort	Salem, A. A.
title	The leakage current components as a diagnostic tool to estimate contamination level on high voltage insulators
title_short	The leakage current components as a diagnostic tool to estimate contamination level on high voltage insulators
title_full	The leakage current components as a diagnostic tool to estimate contamination level on high voltage insulators
title_fullStr	The leakage current components as a diagnostic tool to estimate contamination level on high voltage insulators
title_full_unstemmed	The leakage current components as a diagnostic tool to estimate contamination level on high voltage insulators
title_sort	leakage current components as a diagnostic tool to estimate contamination level on high voltage insulators
publisher	Institute of Electrical and Electronics Engineers Inc.
publishDate	2020
url	http://eprints.utm.my/id/eprint/87971/1/AliAhmedAli2020_TheLeakageCurrentComponentsasaDiagnosticTool.pdf http://eprints.utm.my/id/eprint/87971/ http://www.dx.doi.org/10.1109/ACCESS.2020.2993630
_version_	1685579017238872064
score	13.211869

The leakage current components as a diagnostic tool to estimate contamination level on high voltage insulators

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