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Comparative study between conventional and hybrid solid insulation systems

Kassi Koutoua Simon, Fofana Issouf, Megnefhi Fethi, Bétié Amidou, Yéo Z. et Perron Jean. Comparative study between conventional and hybrid solid insulation systems. Dans : 2014 IEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2014 , 19-22 October 2014, Des Moines, IA.

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Résumé

A conventional mineral oil/cellulose insulated transformer's functional life is limited by the life of the cellulose paper. Since cellulose paper aging is accelerated by temperature, moisture and oxygen, poly-aramid-based synthetic insulation paper, with better thermal stability, has emerged for use in transformers. Two ASTM tests methods: DP<inf>V</inf> 'degree of polymerization' as a direct diagnostic tool according to ASTM D4243 and DGA 'Dissolved Gas Analysis' as an indirect diagnostic tool to quantify carbon oxides (CO and CO<inf>2</inf>) according to ASTM D3612 were used to monitor the thermal aging of the cellulose paper within solid hybrid insulation aged with mineral oil. It was then submitted to local overheating, with a comparison to cellulose paper aged with mineral oil to provide a benchmark for evaluation. The results indicate that the cellulose paper within solid hybrid insulation is slightly less degraded compared to the cellulose paper of conventional insulation.

Type de document:Matériel de conférence (Non spécifié)
Sujets:Sciences naturelles et génie > Génie > Génie des matériaux et génie métallurgique
Département, module, service et unité de recherche:Départements et modules > Département des sciences appliquées > Module d'ingénierie
Mots-clés:Degree of polymerisation, dissolved gas analysis, hybrid insulation, local overheating
Déposé le:22 janv. 2016 01:33
Dernière modification:09 déc. 2016 15:43
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