N'cho Janvier Sylvestre, Fofana Issouf, Aka-Ngnui Thomas et Beroual Abderrahmane. (2011). Effect of Exposure to Electrical Discharge on Transformer Oil Properties. High Voltage Engineering, 37, (11), p. 2793-2799.
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Résumé
Petroleum based oils, the so-called mineral oils, are used for impregnating solid insulations or filling products of very large number of electric materials: transformers, reactors, cables, bushings, circuit breakers, tap changers, etc. In these equipments, oil is exposed to electrical stress and may experience electrical discharges under certain circumstances. Since the electrical stress is unavoidable in power equipments, the ability of oil to resist decomposition under electrical stress is of great importance for the safety of these devices. Electrical stress together with heat and moisture, in the presence of oxygen, oxidises the oil producing free radicals, acids and sludge that are deleterious to the transformer. In this paper, the effect of electrical discharges on oil properties is reported. The results indicate that quality of oil is considerably affected with increasing voltage stress. Comparing oil properties before and after voltage application allows assessing the outcome of random secondary chemical reactions between large oil born free radicals.
Type de document: | Article publié dans une revue avec comité d'évaluation |
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Volume: | 37 |
Numéro: | 11 |
Pages: | p. 2793-2799 |
Version évaluée par les pairs: | Oui |
Date: | Novembre 2011 |
Sujets: | Sciences naturelles et génie > Génie Sciences naturelles et génie > Génie > Génie électrique et génie électronique Sciences naturelles et génie > Sciences appliquées |
Département, module, service et unité de recherche: | Départements et modules > Département des sciences appliquées > Module d'ingénierie |
Mots-clés: | electrical discharge, oil transformer, dielectric dissipation factor (DDF), conductivity, dissolved decay products, turbidity, interracial tension, total acid number, water content |
Déposé le: | 18 févr. 2021 21:03 |
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Dernière modification: | 18 févr. 2021 21:03 |
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