Modeling and Performance Analysis of Compressed Air Pumped Storage System
In order to support the energy transformation,improve the utilization rate of wind photovoltaic power and optimize the operation of power systems,a new whole model of compressed air pumped storage system was establised to analyze the operation performance of storage tank system,hydraulic subsystem,pump turbine system,and mechanical subsystem.The best efficiency point control method was used to adjust the speed of pump turbine.The simulation was carried out in terms of pressure configuration and dimensionless flow setting.The results show that the proposed model can make the pump turbine work quickly and stably in the high efficiency zone.When the storage tank adopts the lower/higher pressure ratio,there will be higher storage tank efficiency.Reducing the dimensionless flow rate of pump turbine will affect the efficiency of storage tank and pump turbine simultaneously,and the decrease of pump turbine efficiency will have a greater impact on the overall efficiency.The research results can provide reference for the design and operation of compressed air pumped storage system.
compressed air energy storagepumped storageperformance analysisefffficiency analysis
NETL
NSTL
万方数据
维普
