Abstract: This paper introduces the application of frequency converters in Kailuan Power Station and analyzes their energy-saving and operational effects. It shows that the power station's adoption of low-voltage frequency converters for speed regulation and energy-saving retrofitting of equipment such as pulverized coal exhaust fans has significant effects. It has advantages such as reducing equipment wear and environmental pollution. Keywords: Frequency converter; Pulverizing Application of the Frequency Transducer in the Kafluan Power Station 1 Introduction Kailuan Power Station has an installed capacity of 3×25MW, with 4 boilers and 3 turbines in operation, forming a medium-temperature, medium-pressure cogeneration unit. With the formation of the domestic market, the promotion and application of frequency converter technology has achieved good energy-saving results. Kailuan Power Station first adopted frequency converter technology to retrofit the drive power supply of the pulverized coal exhaust fans to enhance the company's competitiveness. 2 Speed ​​Regulation and Energy-Saving Principle The speed n of an asynchronous motor is related to the frequency f, the motor slip s, and the number of pole pairs P of the motor as follows: [b][align=center]For more details, please click: Application of Frequency Converters in Kailuan Power Station[/align][/b]