This paper puts forward a thought

which transform the cooling system of existing trditional transformer.The foucs of the transformation is optimization and design of the radiator

and the calculation of the method is also confirmed viably.With new cooling system replaced the previous one and equiped the high-quality blowing device and control box

eventually

it reach the requirements of energy saving

noise reduction and safe operation of transformer.Finally

the transformation of the cooling system of main transformer in a substation of a power supply corporation proved that the method have very strong practicability.