eprintid: 15484
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/01/54/84
datestamp: 2023-11-10 03:30:06
lastmod: 2023-11-10 03:30:06
status_changed: 2023-11-10 01:59:36
type: conference_item
metadata_visibility: show
creators_name: Ying-Chan, C.
creators_name: Nallagownden, P.
creators_name: Nor, N.M.
title: Utility Based Performance Assessment of Oil-Filled Transformers Considering Specific Load Characteristics and Environmental Factors
ispublished: pub
keywords: Deterioration; Health; Oil filled transformers; Outages, Characteristic factors; DGA; Environmental factors; Field test; Health indices; Input parameter; Load characteristics; Oil-filled; Performance assessment; Specific loads, Power transformers
note: cited By 0; Conference of 8th International Conference on Intelligent and Advanced Systems, ICIAS 2021 ; Conference Date: 13 July 2021 Through 15 July 2021; Conference Code:175661
abstract: Power transformers are critical components in a power system network, and they are subjected to multifactorial stresses. Regular performance assessments are conducted, and the Health Index (HI) technique is sometimes adopted. HI integrates field test results into a single index representing the overall health. Existing Transformer HI (THI) models do not consider electrical and environmental factors unique to oil and gas facilities. Exclusion of operating history and failure data analysis affects the accuracy of the models. A pilot study was conducted using 4 existing THI models to investigate the accuracy of the THI scores in depicting the actual condition of a failed transformer installed in a gas processing plant. 2 models with 24 and 15 input parameters successfully indicated a significant deterioration within the transformer. Nevertheless, a final 'Fair' score would not trigger urgent intervention. With evidences that similar failure has occurred repeatedly across the facilities, the relevant field tests could have been included as dedicated input parameters to produce a more precise THI score. Another 2 models with less than 4 input parameters, placed the failing transformer in 'Very Good' band, which was totally erroneous. To design an accurate THI model, it is essential to consider specific load characteristics and environment factors by applying actual failure probability as basis. © 2021 IEEE.
date: 2021
publisher: Institute of Electrical and Electronics Engineers Inc.
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85124133457&doi=10.1109%2fICIAS49414.2021.9642518&partnerID=40&md5=c228d3502541ee1ffadde7a37a00364c
id_number: 10.1109/ICIAS49414.2021.9642518
full_text_status: none
publication: International Conference on Intelligent and Advanced Systems: Enhance the Present for a Sustainable Future, ICIAS 2021
refereed: TRUE
isbn: 9781728176666
citation:   Ying-Chan, C. and Nallagownden, P. and Nor, N.M.  (2021) Utility Based Performance Assessment of Oil-Filled Transformers Considering Specific Load Characteristics and Environmental Factors.  In: UNSPECIFIED.