M701F联合循环机组余热锅炉启动过程优化研究

Start-up optimization of heat recovery steam generator in M701F combined cycle power plant

针对三菱M701F级燃气-蒸汽联合循环机组经常参与调峰而涉及到频繁启停,且余热锅炉因惯性大而启动慢的特点,结合余热锅炉的工作原理及相关特性,为了缩短余热锅炉启动时间,提出了一种启动优化模型。该方法以APROS(advanced process simulation software)模型为基础,综合理论分析和经验归纳,对余热锅炉内部各模块进行了详细的仿真研究。仿真结果表明,以APROS为基础的优化模型能够在准确模拟余热锅炉稳态运行工况的同时缩短至少20%的启动时间,对联合循环机组整体的运行优化有很大的帮助。

The gas-steam combined cycle power plant in M701 F series of Mitsubishi often participates in peak regulation and frequently starts up and shuts down,and the HRSG(Heat Recovery Steam Generator)starts slowly due to large inertia,so a start-up optimization model is proposed to shorten the start-up time of the HRSG according to the operating principle and related characteristics of the HRSG.Based on the APROS(Advanced Process Simulation Software)model,theoretical analysis and empirical induction,this model includes detailed simulation on each module of the HRSG.The simulation results show that the optimization model can accurately simulate the steady-state operating conditions of the HRSG while shortening at least 20%of the standard start-up time,which greatly helps the overall operation optimization of the combined cycle power plant.