Stably-operating adiabatic compressed air storage power generation method and system

Abstract

The invention discloses a stably-operating adiabatic compressed air storage power generation method and system. The technical scheme is as follows: when a power grid is in a valley load, by using a sinuous coil heat pipe exchanger arranged at a gas storage chamber and a countercurrent gas-liquid heat pipe exchanger arranged at an outlet of a gas compressor, through forced circulation, compression heat in a gas compression and energy storage process is absorbed by steps, and the absorbed heat is stored in the heat storage device; and when the power grid is in a peak load, the heat of the heat storage device is released, by using a gas release countercurrent gas-liquid heat pipe exchanger arranged at a turbine motor inlet and the sinuous coil heat pipe exchanger arranged at the gas storage chamber, through forced circulation, the temperature of a gas entering a turbine motor is increased, expansion cold of the gas storage chamber is absorbed, and the temperature of the gas storage chamber is kept relatively stable. According to the stably-operating adiabatic compressed air storage power generation method and system, the compression heat in a gas compression and energy storage process and expansion cold generated in a gas release and power generation process are absorbed by steps, thus a constant temperature of air in the gas storage chamber can be kept, the whole operation efficiency of the system is improved, the safety of the gas storage chamber can be ensured, and continuous and stable operation of a unit is ensured.

Description

technical field [0001] The invention relates to a power generation technology, in particular to a stable operation method and system for adiabatic compressed air energy storage power generation. Background technique [0002] Compressed air energy storage is a large-scale energy storage method with development potential. It has the advantages of fast dynamic response, low cost, and environmental friendliness. When the compressed air energy storage power generation system uses electricity to drive the compressor to compress the air and store it in the air storage chamber, the temperature of the air at the outlet of the compressor and the air temperature in the air storage chamber will increase accordingly. And the faster the air pressure in the gas storage chamber rises, the greater the increase in the temperature of the air in the gas storage chamber. Conversely, during the deflation process of the air storage chamber, the pressure of the air storage chamber will decrease wi...

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Problems solved by technology

In the existing compressed air energy storage power generation system, the heat transfer between the gas storage chamber and the surrounding environment only depends on the natural heat dissipation between the wall of the gas storage chamber and the environment, and the variation range of the air temperature in the gas storage chamber is directly related to the pressure change rate of the gas storage chamber. Its temperature is not controlled, poor heat dissipation, especially a short-term rapid rise or fall in the pressure of the gas storage chamber, will cause the temperature of the gas storage chamber to rise or fall rapidly

The frequent rise and fall of the air temperature in the gas storage room will affect the energy storage power consumption and power generation effic

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