基于Simulink的水轮机调节系统频率扰动仿真研究

Research on frequency disturbance simulation for turbine governing system based on Simulink

运用计算机仿真技术进行了水轮机调节系统频率扰动的实验研究。在机组空载频率扰动工况下,改变调速器参数及被控系统参数进行仿真实验。仿真结果表明:不同参数组合对系统频率扰动性能优劣程度影响极大,基于Simulink仿真可为调节系统频率扰动寻求到控制效果良好的参数组合。通过仿真实验,可加深学生对水轮发电机组频率扰动PID调节规律的认识和理解,提高学生运用仿真技术对水轮机组频率扰动问题评价的能力。

The computer simulation technology is used to study the frequency disturbance of water turbine governing system （WTRS）.Under no-load frequency disturbance condition,the parameters of governor and the controlled system are changed to do the simulation experiments.The simulation results show that the different parameters combinations have great influences on the system ’s performances under frequency disturbance condition.In addition,the simulation experiments in Simulink environment can seek to find the parameter combination which can make the governing system achieve good control effect under frequency disturbance condition.The simulation experiments can not only strengthen students’understanding of the PID adjusting rule for frequency disturbance of hydroelectric generating set,but also improve the students’ability of using the computer technology to provide theoretical basis and evaluation for the practical engineering problem of WTRS under frequency disturbance condition.