Research on Storage Capacity of Compressed Air Pumped Hydro Energy Storage Equipment
- 1 State Key Laboratory of Alternate Electrical Power, System with Renewable Energy Sources, North China Electric Power University, Beijing, China
- 2 State Key Laboratory of Alternate Electrical Power, System with Renewable Energy Sources, North China Electric Power University, Beijing, China
- 3 State Key Laboratory of Alternate Electrical Power, System with Renewable Energy Sources, North China Electric Power University, Beijing, China
- 4 State Key Laboratory of Alternate Electrical Power, System with Renewable Energy Sources, North China Electric Power University, Beijing, China
Abstract
Compressed air pumped hydro energy storage equipment combines compressed air energy storage technology and pumped storage technology. The water is pumped to a vessel to compress air for energy storage, and the compressed air expanses pushing water to drive the hydro turbine for power generation. The novel storage equipment saves natural gas resources, reduces carbon emission, and improves the controllability and reliability. The principle of compressed air pumped hydro energy storage is introduced and its mathematical model is built. The storage and generation process of the novel equipment is analyzed using the model. The calculation formula of the storage power is deduced in theory in different situations of isothermal and adiabatic compression. The optimal storage scheme is given when the capacity and withstand pressure of the vessel is definitive, and the max available capacity and the equipment utilization efficiency evaluation of the scheme is given.
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