Thermal Simulation Using COMSOL Application Builder for Oil-Air Transformer Bushings

Somil Joshi1
1Hitachi Energy India
Published in 2023

Transformer bushings are power system equipment installed on transformers tank to connect overhead conductor & transformer leads. These Bushings at high voltages carry large currents leading to higher temperature & catastrophic failures. Whereas excess insulation further reduces Inservice life. Hence during design, it becomes important to thermally comply with governing standards (Ref. 1) & ensure reliable operation. The purpose of this work was to develop user friendly thermal simulation application which reduces efforts during preprocessing, give accurate losses & temperature prediction for newly designed condenser core transformer bushings. The key users from product development, design & tender can use this application to predict temperature, compare existing designs & generate reports swiftly.