Albano, M. ORCID: https://orcid.org/0000-0002-5486-4299, Waters, R. T., Slama, M. A. and Haddad, A. ORCID: https://orcid.org/0000-0003-4153-6146 2024. Online measurement of voltage gradient distortion and leakage current of heavily contaminated outdoor insulation using thermal imaging. IEEE Transactions on Dielectrics and Electrical Insulation 31 (2) , pp. 988-996. 10.1109/TDEI.2023.3340985 |
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Official URL: https://doi.org/10.1109/TDEI.2023.3340985
Abstract
A new thermal model of an insulator heat loss coefficient proves that evaporation power loss is more significant than thermal conduction to a moist environment. Consequently, the leakage current in a moist pollution layer may cause dry-band formation. Such bands are bridged and sustained by streamer discharges, which can initiate partial arcing. Clean-fog tests of contaminated insulators have been shown to provide infrared temperature data for the model, and the evaluation of voltage gradients in this dry-band regime. The same modelling also offers a unique method of online leakage current monitoring.
Item Type: | Article |
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Date Type: | Publication |
Status: | Published |
Schools: | Engineering |
Publisher: | Institute of Electrical and Electronics Engineers |
ISSN: | 1070-9878 |
Date of First Compliant Deposit: | 8 December 2023 |
Date of Acceptance: | 27 November 2023 |
Last Modified: | 14 May 2024 16:38 |
URI: | https://orca.cardiff.ac.uk/id/eprint/164635 |
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