摘要
逆系统方法是一种将非线性系统反馈线性化的方法。运用逆系统方法将简单电力系统的非线性模型线性化 ,对该线性化的系统运用具有二次型性能指标的线性最优控制方法设计了电力系统混沌振荡控制器 ,可以使得电力系统自身的非线性特性得以抵消和补偿 ,增加系统的阻尼 ,因而抑制了混沌振荡。数值仿真表明 :在该控制器作用下 ,由于受周期性负荷扰动而产生混沌振荡甚至失去稳定的系统可以从远离平衡点的位置上被驱动到包含平衡点的低振幅的稳定周期轨道上 ,从而抑制了混沌振荡 ,保证了电力系统的稳定运行 ,同时该控制器具有维持电力系统静态稳定的作用。
Inverse system method is a feedback linearization method. A simple nonlinear power system linearized and the linear optimal control technique which possesses the quadratics index to the linearized system applyed,the power system chaos controller is designed.In the process of designing this controller,the target periodic orbit needn't be evaluated.The performance of the controller has been evaluated by numerical simulation.It is concluded that such a controller can drive chaotic or unstable trajectory of power system under stronger periodic load perturbation to periodic and stable orbit surrounding the initial position,i.e.,the controller can restrain chaotic oscillation and ensure power system stability.
出处
《南京工程学院学报》
2002年第4期8-11,共4页
Journal of Nanjing Institute of Technology
