抽水蓄能电站与火电厂联合优化运行分析

Analysis of Combined Optimal Operation of Pumped Storage Power Plants and Thermal Power Plants

[目的]利用抽水蓄能电站优化火电厂的出力曲线,是提高电力系统经济性的重要手段。[方法]建立了抽水蓄能电站与火电厂联合优化运行的数学模型,然后以某实际电力系统为例对联合运行进行了优化模拟。最后探讨了联合运行节煤的内在机理。[结果]模拟结果表明抽水蓄能电站与火电厂联合优化运行降低了系统煤耗。[结论]建议要充分利用抽水蓄能电站来优化火电厂的出力曲线,提高电力系统运行经济性。

[Introduction]Optimizing output curve of thermal power plants by using pumped storage power plants is an important means to improve the economy of power system. [Method]In this paper,a mathematical model of combined optimal operation of pumped storage power plants and thermal power plants was established first. Then,an actual power system containing pumped storage power plants and thermal power plants was taken as an example for simulation. Finally,the mechanism of coal saving of combined optimal operation of pumped storage power plants and thermal power plants was revealed. [Result]The simulation results show that combined optimal operation of pumped storage power plants and thermal power plants reduce the coal consumption of power system.[Conclusion]We suggest that output curve of thermal power plants should be optimized by making full use of pumped storage to improve running efficiency of power system.