Thermal Analysis of Insulation Oil for Transformer with and without Nano-fillers

Abstract

A transformer is a static machine that transfers electrical energy from one circuit to another through electromagnetic induction. Reliability of the power system is a major concern in any transmission and distribution network and is achieved by the proper operation of all the power system components specially the transformer. Satisfactory operations of transformers are hindered by the frequent insulation failures. Therefore there is a need to develop new insulating materials with improved thermal properties. The most commonly used insulating material is the transformer oil which serves the dual purpose of insulation and coolant. Therefore investigations are focused towards the development of transformer oil with nano fillers with better thermal properties. In this context, the present work is aimed at temperature distribution analysis of insulating oil with and without nano filler using computational tool as COMSOL 5.3a. Analysis is been carried out to check the temperature distribution in insulating oil with and without nano filler for better performance of the transformer. Simulation results have shown that there is 50 K and 5 K temperature decrease in transformer oil with and without nano filler for 25 kVA and 100 kVA ratings respectively. There is constant decrease in temperature by 7 K when vegetable oil is used with and without nano filler for 25 kVA and 100 kVA ratings respectively.