摘要
水轮机调节系统的本质是非线性的。为了深入了解非线性水轮机调节系统的调节规律,在考虑水力发电机组非线性特性的基础上,建立了一个水轮机调节系统的非线性模型。运用非线性系统线性化的方法和线性系统的Hurwitz判据对系统进行稳定性分析,得到了令非线性系统稳定的控制器参数。非线性系统的仿真结果表明:线性化系统的稳定参数一定能使非线性系统稳定,且线性化系统的稳定参数中一定包含了令非线性系统强稳定的控制器参数。这为非线性水轮机调节系统的控制器参数整定及稳定运行提供了理论依据。
The essence of hydro-turbine governing system is nonlinear. A nonlinear mathematical model of hydro-turbine governing system is presented based on the nonlinear characteristics of hydro-turbine to lucubrate the nonlinear dynamical behaviors of the system. Governor parameters that make nonlinear system stable are tuned by using linearization method and Hurwitz criterion about linear system. The simulation result shows that stable parameters of the linearized system can also stabilize nonlinear system, and some of them can make the system stable effectively. It provides a way to tune parameters of hydro-turbine governing system and can ensure the safe operation of hydro-power stations.
作者
唐兆祥
张德虎
刘志淼
TANG Zhao-xiang ZHANG De-hu LIU Zhi-miao(College of Energy and Electrical Engineering, Hohai University, Nanjing 211100, China)
出处
《中国农村水利水电》
北大核心
2016年第11期175-177,182,共4页
China Rural Water and Hydropower
关键词
水力发电机组
非线性调节系统
线性化系统
稳定运行
参数整定
hydro-generator unit
non-linear governing system
linearized system
steady operation
parameter tuning
