Abstract: Based on the intelligent control system for optimization of the cold end of the variable frequency circulating water pump, according to the environmental conditions and unit parameters, real-time monitoring and analysis of the performance changes of the cold end system and equipment, optimization of circulating water pump operation mode and real-time correction of the operating frequency of the variable frequency circulating water pump make the difference between the power of the generator and the power consumption of the circulating pump in the current unit under the premise of ensuring safe and stable operation of the unit. Maximum operating condition and conditions can be achieved to maximize the economy of the unit under partial load as far as possible.