SIMULINK在水轮机调节系统仿真中的应用

Application of SIMULINK in simulation of hydro-turbine governing system

在小波动范围内,建立了水轮机调节系统各部分的数学模型,采用SIMULINK仿真软件对水轮机调节系统在1%频率扰动和机组突减30%负荷情况下的动态特性进行了仿真分析。通过仿真,整定了水轮机调节系统空载频率扰动过程中,暂态转差系数bt=0.4,暂态反馈时间常数Td=2.95和负荷扰动过程中bt=0.5,Td=2.95的最佳调节参数,获得水轮机调节系统良好的快速性和稳定性。结果表明,利用SIMULINK仿真软件对水轮机调节系统进行仿真研究,方便、灵活。

The mathematic model of the hydro?9turbine governing system is established in a small disturbed motion range. A research using SIMULINK to analyze the dynamic characteristic of the hydro?turbine governing system with 1% frequency disturbance and 30% load rejection is carried out. The optimal governing parameters in the processes of frequency disturbance in which the transient rotational?difference coefficient bt is equal to 0.4 and the transient feedback time constant Td, 2.95 and of load disturbance in which bt equals 0.5 and Td,2.95 are all adjusted and the favorable dynamic characteristics in aspects of fastness and stability of the governing system are obtained by simulation. The results indicate that the model is convenient and flexible to simulate the hydro?turbine governing system using the SIMULINK software.