发电机非线性状态PI励磁汽门协调控制器的研究

针对电力系统的强非线性和不确定性的特点，直接对其非线性不确定对象设计了非线性状态PI励磁汽门协调控制器。避免了一般反馈线性化励磁汽门综合控制由于数学模型的误差而影响控制器性能的缺点。所得的控制规律与系统运行点和网络结构完全无关，同时控制器本身结构简单，仅需发电机局部信息，易于在多机系统中实现分散协调控制。仿真计算表明非线性状态PI励磁汽门协调控制器能够有效地提高系统的暂态稳定性。

The research on nonlinear state PI coordinated controller of generator's excitation and valve

As for the strong nonlinear and uncertain characteristic of the power system,the nonlinear state PI coordinated controller of excitation and valve is proposed in this paper.The controller is designed for the uncertain model object and the shortcoming of general feedback linearization coordinated control of excitation and valve,which its performance is affected by the mathematical model error,is avoided.The control law is completely independent on the operation condition and the net structure of the power system.The controller structure is simple and only local information of generator is needed.The decentralized controller can be accomplished easily in multimachine power system.The simulation shows that the nonlinear state PI coordinated controller of excitation and valve is satisfied for improvement of power system.