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Mixed Insulating Liquids with Mineral Oil for High Voltage Transformer Applications: A Review

Lyutikova M., Korobeynikov S., Ungarala Mohan Rao et Fofana Issouf. (2022). Mixed Insulating Liquids with Mineral Oil for High Voltage Transformer Applications: A Review. IEEE Transactions on Dielectrics and Electrical Insulation,

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URL officielle: http://dx.doi.org/doi:10.1109/TDEI.2022.3157908

Résumé

Due to the growing interest in environmental concerns, synthetic, and natural esters have become the key focus of the picture in the last two decades as insulating fluids for high voltage equipment. This is because, unlike mineral oil, ester liquids are biodegradable, non-toxic, and safe for the environment and human health. These fluids are derived from renewable sources and have high fire resistance. However, synthetic and natural ester fluids are still used in a rather limited number of electrical equipment for several reasons (high cost, high viscosity and density, increased tendency towards electrostatic charge, faster propagation of streamers in an inhomogeneous electric field, etc.). Besides, a huge amount of equipment is filled with mineral oils. The massive replacement of oil-filled equipment with natural or synthetic esters may be extremely expensive to utilities and transformer owners. In addition, in the event of partial or complete retrofilling of mineral oil with an ester fluid, the equipment may evidently contain a mixture of two insulating fluids; therefore, demanding the scope for research on mixed insulating liquids. The intent of this article is to present a comprehensive review of the literature on the blend of mineral oil and other alternative dielectric fluids. The critical research progresses, highlights, and challenges related to mixed liquids along with significant tutorial elements as well as some analyses are discussed. This review should be useful for researchers, utilities, and transformer owners concerned with ester liquids and retro filling aspects.

Type de document:Article publié dans une revue avec comité d'évaluation
Version évaluée par les pairs:Oui
Date:8 Mars 2022
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
Unités de recherche > Centre international de recherche sur le givrage atmosphérique et l’ingénierie des réseaux électriques (CENGIVRE) > Vieillissement de l’appareillage installé sur les lignes à haute tension (ViAHT)
Mots-clés:oils, minerals, liquids, viscosity, power transformer insulation, oil insulation, dielectric liquids, huiles, minéraux, liquides, viscosité, isolation de transformateur de puissance, isolation d'huile, liquides diélectriques, transformer, mineral oil, insulating liquid, ester fluids, mixed liquids
Déposé le:16 mars 2022 22:40
Dernière modification:16 mars 2022 22:40
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