Transformer substation thermal balance control system and control method

The invention relates to a transformer substation thermal balance control system and a control method. The transformer substation thermal balance control system comprises a main transformer room and asecondary equipment room, wherein the main transformer room and the secondary equipment room are communicated with each other by means of a ventilation duct, an air inlet of the ventilation duct is provided with an axial flow fan I, an air outlet of the ventilation duct is provided with an axial flow fan II, an air filtering device is arranged in the ventilation duct between the axial flow fan Iand the axial flow fan II, the main transformer room and the secondary equipment room each provided with a temperature sensor internally, the temperature sensors are connected with temperature controldevices, the temperature control devices are connected with fan control devices, and the fan control devices are connected with the axial flow fan I and the axial flow fan II separately, the temperature control devices in the