Aplicação de óleo vegetal para transformadores.

Abstract

Insulation and cooling of a power transformer are closely related to the insulating fluid being used. The transformer oil, produced through oil distillation is, so far, the most used liquid dielectric in electrical equipment. However, increasing environmental concerns about its low biodegradability and the existence of limited reserves the use of vegetable oils, based on natural esters and extracted from renewable resources, it is very attractive as an alternative to mineral oils. Based on this fact, this work proposes a literature review covering the application of vegetable oil based transformer fluids, the so called eco-friendly oil, in transformers in the electricity sector. The main purpose is to identify, in articles` abstracts, fortes and weaknesses in the application of vegetable oil based transformer fluids in power transformers to replace the mineral-based oils. At the end of this work, tangible applications of vegetable oil in transformers will be presented.