Frequency modulation control method of compressed air energy storage system

The invention relates to a frequency modulation control method for a compressed air energy storage system, and the method comprises the steps: connecting a power grid system, firstly, building a gas storage SOC model of a gas storage and a heat storage SOC model of a heat storage tank; then, the compressed air energy storage frequency modulation droop control coefficient is adjusted in a self-adaptive mode through the air storage SOC and the heat storage SOC, and the compressed air energy storage participated power grid frequency modulation response power is obtained according to the frequency modulation droop control coefficient; and finally, according to the compressed air energy storage participation power grid frequency modulation response power, an adjusting instruction for adjusting the mass flow of the adjusting valve of the compressed air energy storage is obtained, and the final output power of the compressed air energy storage turbine is obtained according to the instruction. The compressed air ener