A near-isothermal compressed air energy storage system and its operating method
A compressed air energy storage, isothermal technology, applied in solar thermal power generation, mechanical power generation with solar energy, piston pump, etc., can solve the problems of inability to absorb reactive power, blocking, etc. Effect
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[0079] Preparation stage: use the compressor 28 to fill the high-pressure air storage space 21 and the low-pressure air storage space 22 with air, so that the pressure of the two air storage spaces reaches the set value, and adjust the water level and pressure inside the water-air co-capacity tank, only when supplementing Compressor 28 is activated in the event of a system leak.
[0080] Storage stage: the surplus electric energy drives the water pump to do work, the gas is released from the low-pressure gas storage space 22, and enters the high-pressure gas storage space 21 after being compressed by the system.
[0081] Energy release stage: the gas in the high-pressure gas storage space 21 passes through the regenerator 26 and the reheater 23 and then enters the turboexpander 25 to perform work, and the turbine exhaust gas passes through the regenerator 26 and enters the low-pressure gas storage space for storage.
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