Comparative study of the thermal degradation of synthetic and natural esters and mineral oil: effect of oil type in the thermal degradation of insulating kraft paper

摘要

Insulating oil plays a fundamental role in power transformers, providing both the electrical insulation and the means for transferring the thermal losses to the cooling system. In addition, insulating oil is an important information carrier. It can provide information about the degradation of insulating paper, by depolymerization, which is very important in transformer diagnostics [1].