基于逐级计算的汽轮机性能仿真模块的研究与应用

1前言汽轮机是一种以蒸汽为工质,并将蒸汽的热能转换为机械功的旋转机械,是现代火力发电厂中应用最广的原动机,掌握其动静态特性始终是电力系统研究人员不断追求的目标。随着计算机技术的迅速发展,应用数字仿真技术对热力系统进行研究已成为解决实际问题的重要手段。在众多关于

Research and Applications of a Steam Turbine Performance Simulation Module Based on Stage-by-stage Calculations

Under certain circumstances when it is not possible to obtain detailed geometric parameters and aerodynamic characteristics for a steam turbine stage-group one can on the basis of the calculation method for nodes in a fluid network consider the stage to be solved as pressure nodes and based on mass equilibrium calculate steam exhaust discharge pressure.In accordance with the work-doing principle of the turbine stage-group other status-parameters can be computed,and according to the design philosophy of mechanical work a relevant simulation algorithm has been prepared.The latter was employed in the project development of several sets of power station simulation system.General practice has shown that the steam turbine simulation module under discussion can accurately reflect the whole physical process of the simulation object and features fine static precision as well as outstanding dynamic response characteristics.It is a general-purpose simulation module of high practical value.