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Lessons to learn from post-installation pollution levels assessment of some distribution insulators

Fofana Issouf, N'cho Janvier Sylvestre, Bétié Amidou, Hounton Épiphane, Meghnefi Fethi et Yapi Kouba Marie Lucia. (2020). Lessons to learn from post-installation pollution levels assessment of some distribution insulators. Energies, 13, (16), p. 4064.

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URL officielle: http://dx.doi.org/doi:10.3390/en13164064

Résumé

Among the main causes of outdoor insulation failures is their poor specifications in terms of leakage distances. This happens when the selected criteria are unable to cope with all the stresses imposed by the changes in environmental pollutions. Therefore, it is important for utilities to fully understand the actual pollution characteristics of the service environment in which the insulators are operating. In this paper, the pollution severity and performance of some 13.2 kV ceramic insulators, sampled in different areas of a Canadian aluminum factory, are assessed. The investigations were performed taking into account the influence of air humidity. Various characteristics were investigated to assess the pollution levels of the insulators, such as equivalent salt deposit density (ESDD) and non-soluble deposit density (NSDD), surface resistance, and leakage current characteristics (density, 3rd harmonic amplitude, and phase). It was witnessed that the insulators, collected around the factory, were much more polluted in comparison to the initial expectation. The pollution level should not be considered static due to the environmental parameters’ dynamics. Lessons to learn: the reliability of an electrical grid is dependent on components whose own reliability is strongly affected by external factors, of which there is often a poor awareness. If care is not taken to re-evaluate the post-installation pollution levels of the insulators, the light may simply turn out!

Type de document:Article publié dans une revue avec comité d'évaluation
Volume:13
Numéro:16
Pages:p. 4064
Version évaluée par les pairs:Oui
Date:8 Juillet 2020
Sujets:Sciences naturelles et génie > Génie
Sciences naturelles et génie > Génie > Génie électrique et génie électronique
Département, module, service et unité de recherche:Départements et modules > Département des sciences appliquées > Module d'ingénierie
Mots-clés:insulator, pollution, humidity, equivalent salt deposit density (ESDD), non-soluble deposit density (NSDD), leakage current, post-installation study, isolant, pollution, humidité, densité équivalente de dépôt de sel (DEDS), densité de dépôt non soluble (DDNS), courant de fuite, étude post-installation
Déposé le:14 oct. 2020 19:42
Dernière modification:14 oct. 2020 19:42
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Creative Commons LicenseSauf indication contraire, les documents archivés dans Constellation sont rendus disponibles selon les termes de la licence Creative Commons "Paternité, pas d'utilisation commerciale, pas de modification" 2.5 Canada.

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