Fofana Issouf, Borsi H., Gockenbach E. et Farzaneh Masoud. (2007). Aging of transformer insulating materials under selective conditions. European Transactions on Electrical Power, 17, (5), p. 450-470.
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URL officielle: http://dx.doi.org/doi:10.1002/etep.134
Résumé
In today's economic climate, it is important to know the condition, by means of suitable diagnostic tests, of the oil impregnated paper usable as primary insulation in equipment such as transformers, switchgear, bushings, cables, and their accessories. The aim of this paper is regarded as a main task to study the parameters that mostly influence the ageing process of oil/paper insulation used in transformers with preset moisture levels. A comparison is made between the performances of cellulose and Aramid papers. It is shown that Aramid paper is much less sensitive to water than cellulose paper. However, the addition of air (oxygen), via acid formation and oxidation in the oil, has a direct influence on the increase of the loss factor for both papers. The catalysts, that represent the metallic components in the transformer, accelerate the ageing process of the cellulose papers, while no influence on the ageing process of Aramid was observed. Oil ageing without a solid partner is insignificantly influenced by water, but accelerated by air‐oxygen, via the moisture and acid formation, and oxidation processes. A direct influence on the increase of the loss factor and the decrease of electric strength particularly at low temperatures is to be noted.
Type de document: | Article publié dans une revue avec comité d'évaluation |
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Volume: | 17 |
Numéro: | 5 |
Pages: | p. 450-470 |
Version évaluée par les pairs: | Oui |
Date: | 2007 |
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: | vieillissement, matériaux isolants, transformateurs, conditions sélectives, isolation huile/papier, niveau d'humidité, aging, aging factors, transformers, power transformers, liquid insulation, paper insulation |
Déposé le: | 18 févr. 2021 17:08 |
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Dernière modification: | 18 févr. 2021 17:08 |
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