Heat radiation system used for current transformer

The utility model discloses a heat radiation system used for a current transformer. The heat radiation system comprises a heat radiation cabinet body, an evaporator and an internal circulation blower fan. The evaporator and the internal circulation blower fan are installed in a current transformer cabinet body. The heat radiation cabinet body is provided with a main condenser and a compressor. The main condenser and the compressor are connected via a pipeline. Refrigerant is compressed into high-temperature and high-pressure steam by the compressor to be transmitted to the current transformer cabinet body via the main condenser and then accessed to each power module in the current transformer via the pipeline. Refrigerant flowing through each power module is transmitted to the evaporator via the pipeline and then transmitted back to the compressor via the evaporator. The internal circulation blower fan is arranged to be towards the evaporator and used for blowing cold air to the current transformer cabinet body. The heat radiation system used for the current transformer has advantages that overall heat exchange efficiency of the current transformer can be enhanced and external environment temperature influence can be reduced.