Carbon emission reduction and energy storage system for thermal power plant

A carbon emission reduction and energy storage system for a thermal power plant comprises a carbon emission reduction subsystem and a carbon dioxide energy storage subsystem which are communicated through a pipeline and valve system and can selectively achieve independent or coupled operation. The carbon emission reduction subsystem comprises a carbon capture module, a carbon dioxide compression module and a carbon storage module which are connected in sequence, chimney flue gas is connected into the carbon capture module, and the carbon emission reduction subsystem is used for separation-purification, compression-heat recovery and storage of CO2 gas in the chimney flue gas; the carbon dioxide energy storage subsystem comprises an energy storage module, an energy release module, a high-pressure storage tank, a low-pressure storage tank, a heat storage tank and a cold storage tank; the energy storage module, the high-pressure storage tank, the energy release module and the low-pressure storage tank are sequent