Evaluation of the cooling system calculation technique for oil-immersed transformers

The main heat sources inside the transformer are the windings and the magnetic core where there are major energy losses released as a heat into the environment during the transformer operation. Heat transfer efficiency upgrade is achieved by installation of small blowers in front of the radiator pipes. In this article we propose the calculation technique of the blower electric engine power capacity to achieve a given power capacity of the transformer with minimum energy demands.