Combined cycle power generation system based on compressed gas energy storage

The invention provides a combined cycle power generation system based on compressed gas energy storage. The combined cycle power generation system comprises a Brayton cycle power generation unit; the compressed gas energy storage unit is connected with the power output end of the Brayton cycle power generation unit; the cold energy supply unit is used for providing low-temperature fluid fuel to cool the cycle working medium in the cooling stage in the Brayton cycle power generation unit, and the low-temperature fluid fuel absorbs heat energy of the cycle working medium in the cooling stage and then is gasified; and the waste heat utilization unit is connected with the cold energy supply unit and the compressed gas energy storage unit, the waste heat utilization unit is used for receiving and combusting the gasified low-temperature fluid fuel, and waste heat generated after the low-temperature fluid fuel is combusted is used for heating the circulating working medium in the energy release stage in the compress