Thermal power generating unit thermoelectric decoupling system coupling ejector and heat storage and operation method

The invention discloses a thermal power generating unit thermoelectric decoupling system for coupling an ejector and heat storage and an operation method, and belongs to the technical field of thermal power generating units. The thermal power generating unit thermoelectric decoupling system comprises a thermal power plant coal-fired generating unit, a regenerative steam extraction system, a steam extraction heat supply module and an energy storage and release module; a steam ejector is introduced into the system and ejects exhaust steam from an outlet of a low-pressure cylinder, heat of the exhaust steam is recycled, condensation loss is reduced, and the energy efficiency of the system is improved; in the time period with the high heat supply load requirement, the high-pressure steam extraction amount of the ejector can be increased to improve the heat supply capacity of the unit, and the requirement of the time period with the high heat supply load is met; a fused salt energy storage module is coupled in the