Compressed air energy storage(CAES) technologies have garnered widespread attention due to their large scale

high efficiency

and environmental friendliness. Among them

the non-combustion compressed air energy storage technology is mature

and produces no carbon emissions during operation. There are already several adiabatic non-combustion compressed air energy storage power stations in operation

under construction

and in planning in China. However

the design parameters of the CAES system lack a unified standardization system

which poses many challenges in system design and performance optimization of CAES. To solve this problem

the design of medium-temperature and high-temperature thermal energy storage system schemes for a 200 MW class CAES system is presented

the key equipment parameters and system boundary conditions are determined. Moreover

the performance and technical economy of the medium-and high-temperature thermal energy storage system schemes is compared. The results show that

the high-temperature thermal energy storage system is superior to the medium-temperature thermal energy storage system in performance indicators

but it has a higher investment cost

indicating that when choosing the thermal energy storage technology route for large-capacity CAES systems

it is necessary to consider comprehensively based on specific application scenarios and economic budgets.