摘要
本文用离散系统理论,建立轴流转浆式水轮机微机调速器的数学模型,并且通过脉冲传递函数和它的z反变换,得到微机调节器的每个采样周期的离散控制量,同时解决了过渡过程计算中不同的采样周期与计算时步协调的问题。然后与原有的过渡过程计算程序结合计算轴流转浆式微机调节系统的小波动工况,且对仿真结果进行了分析。在此基础上用单纯型加速法进行PID参数优化,分析了目标函数形式对过渡过程的影响。
The math-model of digital govenor for Kaplan turbine by using discrete system theory is presented in this paper. The coordination between sampling period and time scale is studied by the calculated transient. According to this coordination, the transient of the small fluctuation in the power station with Kplan turbine and digital governor is calculated and analysed. Meanwhile, based on the above model, optimization of PID parameters is performed by using simplex search method.
出处
《水力发电学报》
EI
CSCD
北大核心
2006年第1期119-123,共5页
Journal of Hydroelectric Engineering
关键词
PID数字调速器
PID参数优化
单纯型加速法
采样周期
小波动
PID digital governor
optimization of PID parameters
simplex search method
sampling period
small fluctuation
