eprintid: 20452
rev_number: 3
eprint_status: archive
userid: 1
dir: disk0/00/02/04/52
datestamp: 2026-01-29 06:27:50
lastmod: 2026-01-29 06:27:50
status_changed: 2026-01-29 06:27:50
type: article
metadata_visibility: show
creators_name: Bakar, Norazhar Abu
creators_name: Abu-Siada, A.
creators_name: Islam, S.
creators_name: El-Naggar, M.F.
title: A new technique to measure interfacial tension of transformer oil using UV-Vis spectroscopy
ispublished: pub
keywords: Electric transformer testing; Insulating oil; Neural networks; Oil shale; Reclamation; Surface tension; Ultraviolet visible spectroscopy; Acid numbers; Environmental conditions; Good correlations; High sensitivity; Oil parameters; Spectral response; Transformer insulation oil; UV-vis spectroscopy; Oil filled transformers
note: Cited by: 77
abstract: Interfacial tension (IFT) and acid numbers of insulating oil are correlated with the number of years that a transformer has been in service and are used as a signal for transformer oil reclamation. Oil sampling for IFT measurement calls for extra precautions due to its high sensitivity to various oil parameters and environmental conditions. The current used technique to measure IFT of transformer oil is relatively expensive, requires an expert to conduct the test and it takes long time since the extraction of oil sample, sending it to external laboratory and getting the results back. This paper introduces a new technique to estimate the IFT of transformer oil using ultraviolet-to-visible (UV-Vis) spectroscopy. UV-Vis spectral response of transformer oil can be measured instantly with relatively cheap equipment, does not need an expert person to conduct the test and has the potential to be implemented online. Results show that there is a good correlation between oil spectral response and its IFT value. Artificial neural network (ANN) approach is proposed to model this correlation. © 1994-2012 IEEE.
date: 2015
publisher: Institute of Electrical and Electronics Engineers Inc.
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84928106451&doi=10.1109%2fTDEI.2015.7076831&partnerID=40&md5=9bdb63758c825bb0eba12e0a2a0eda65
id_number: 10.1109/TDEI.2015.7076831
full_text_status: none
publication: IEEE Transactions on Dielectrics and Electrical Insulation
volume: 22
number: 2
pagerange: 1275 – 1282
refereed: TRUE
issn: 10709878
citation:   Bakar, Norazhar Abu and Abu-Siada, A. and Islam, S. and El-Naggar, M.F.  (2015) A new technique to measure interfacial tension of transformer oil using UV-Vis spectroscopy.  IEEE Transactions on Dielectrics and Electrical Insulation, 22 (2).  1275 – 1282.  ISSN 10709878