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On-site OLTC monitoring using duval triangle and DWRM

Electric resistance; Electric resistance measurement; Insulation; Voltage control; Wear of materials; Winding; Dissolved gas analyses (DGA); Duval triangle methods; Insulation degradation; Insulation oil; OLTC; On-load tap changers; Visual inspection; Winding resistances; Oil filled transformers

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Main Authors: Khiar M.S.A., Ghani S.A., Chairul I.S., Thayoob Y.H.M., Ghazali Y.Z.Y.
Other Authors: 55336341600
Format: Conference Paper
Published: Institute of Electrical and Electronics Engineers Inc. 2023
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spelling my.uniten.dspace-224202023-05-29T14:00:52Z On-site OLTC monitoring using duval triangle and DWRM Khiar M.S.A. Ghani S.A. Chairul I.S. Thayoob Y.H.M. Ghazali Y.Z.Y. 55336341600 56504019900 55336864500 6505876050 55336569600 Electric resistance; Electric resistance measurement; Insulation; Voltage control; Wear of materials; Winding; Dissolved gas analyses (DGA); Duval triangle methods; Insulation degradation; Insulation oil; OLTC; On-load tap changers; Visual inspection; Winding resistances; Oil filled transformers Generally, the insulation degradation and contacts failure happened inside the On Load Tap Changer (OLTC). Besides, the OLTC performance can be dropped due to contact wear. Hence., the worn contact creates hotspots inside OLTC tank and affects the insulating oil. Due to this phenomenon, the insulating oil will degrade faster. Consequently, the whole unit of the transformer will be affected as well. Therefore, it is important to find new ways to detect the contacts wear inside the OLTC as it impacts the insulation oil and the age of the transformer. Thus, this paper demonstrates the application of Duval Triangle method during the diagnosis of OLTC to provide any significant indication related to the breakdown of OLTC. Besides, this paper introduced the advanced technique, Dynamic Winding Resistance Measurement (DWRM) to figure out the types and locations of faults occurred inside the OLTC. Finally, visual inspections will be carried out to validate the both results obtained from DGA and DWRM respectively. The analysis in this paper revealed that the findings from Duval Triangle method were similar to the outcomes carried out by DWRM. � 2014 IEEE. Final 2023-05-29T06:00:52Z 2023-05-29T06:00:52Z 2015 Conference Paper 10.1109/TIME-E.2014.7011621 2-s2.0-84922801825 https://www.scopus.com/inward/record.uri?eid=2-s2.0-84922801825&doi=10.1109%2fTIME-E.2014.7011621&partnerID=40&md5=7a89837b2b6e43645525c188aab885f1 https://irepository.uniten.edu.my/handle/123456789/22420 7011621 216 221 Institute of Electrical and Electronics Engineers Inc. Scopus
institution Universiti Tenaga Nasional
building UNITEN Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Tenaga Nasional
content_source UNITEN Institutional Repository
url_provider http://dspace.uniten.edu.my/
description Electric resistance; Electric resistance measurement; Insulation; Voltage control; Wear of materials; Winding; Dissolved gas analyses (DGA); Duval triangle methods; Insulation degradation; Insulation oil; OLTC; On-load tap changers; Visual inspection; Winding resistances; Oil filled transformers
author2 55336341600
author_facet 55336341600
Khiar M.S.A.
Ghani S.A.
Chairul I.S.
Thayoob Y.H.M.
Ghazali Y.Z.Y.
format Conference Paper
author Khiar M.S.A.
Ghani S.A.
Chairul I.S.
Thayoob Y.H.M.
Ghazali Y.Z.Y.
spellingShingle Khiar M.S.A.
Ghani S.A.
Chairul I.S.
Thayoob Y.H.M.
Ghazali Y.Z.Y.
On-site OLTC monitoring using duval triangle and DWRM
author_sort Khiar M.S.A.
title On-site OLTC monitoring using duval triangle and DWRM
title_short On-site OLTC monitoring using duval triangle and DWRM
title_full On-site OLTC monitoring using duval triangle and DWRM
title_fullStr On-site OLTC monitoring using duval triangle and DWRM
title_full_unstemmed On-site OLTC monitoring using duval triangle and DWRM
title_sort on-site oltc monitoring using duval triangle and dwrm
publisher Institute of Electrical and Electronics Engineers Inc.
publishDate 2023
_version_ 1806424417287274496
score 13.214268

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