火力抽水-蓄能发电的经济性分析

火力抽水-蓄能发电是由汽轮机直接带动水泵抽水蓄能发电，文中分析了火力抽水-蓄能发电的发电效率，投资效益以及技术上的可行性，与传统的抽水蓄能发电相比，火力抽水-蓄能发电减少了2次能量转换的损失和1次电能传输的损失，总的发电效率可提高10%以上。其运行方式是全天24h抽水，电网峰负荷时发电。锅炉、汽轮机都可以满负荷工作，得到最高的热效率，用火力抽水-蓄能发电取代同样规模的火电厂和抽水蓄能电站，可以提高发电效率，降低供电煤耗率，增加发电量，降低设备投资。

ANALYSIS ON THE ECONOMY OF THE THERMODYNAMIC PUMPED STORAGE POWER GENERATION

The power generation efficiency,investment benefit and technical feasibility of the thermodynam ic pumped storage are analyzed.The thermodynam ic pum ped storage system is notusing electricity,butusing the steam turbine to pum p water, directly converting heat energy to potential energy for storing energy and then generating power.Because the energy losses in twice energy converting processes and a transm ission process are avoided,the efficiency may im prove more than10 % .The running mode of therm odynamic pum ped storage power generation is pumping in2 4h,generating in peak hours.The boiler, the steam turbine and the pump work in rated capacity,thus all getting the highest electric generation efficiency. The advantages of using a thermodynam ic pumped storage power plant to replace a pum ped storage power station and a fossil fuel power plant in sam e capacity are higher efficiency,less construction investment,m ore electric energy generation and less coal consumption rate.