模糊-PI双模控制和带电压反馈非线性最优励磁控制器的设计

Design of nonlinear optimal excitation controller with fuzzy-PI double mode control and voltage feedback

针对传统PID控制器难以控制具有非线性、大滞后、参数时变性和模型不确定性的电力系统,提出了一种基于模糊-PI双模控制与带电压负反馈非线性最优励磁控制并联运行的控制方法,并借助MATLAB模糊逻辑工具箱进行仿真分析,调整参数以适应与带电压负反馈非线性最优励磁控制器的并联运行。仿真结果表明,对于单机无穷大系统,采用模糊-PI双模控制与带电压负反馈非线性最优励磁控制并联运行的控制方法,对抑制动态扰动环境具有较好的适应性和鲁棒性。

Aiming at the difficulty of traditional PID controller in controlling electric power system which features in nonlinear,large time delay,time-variant parameters and model uncertainty,this paper proposes a control method,which runs in parallel with nonlinear optimal excitation controller with fuzzy-PI double mode control and voltage feedback,simulates the running through MATLAB fuzzy logic toolbox,and adjusts parameters to adapt the parallel running of nonlinear optimal excitation controller with fuzzy-PI double mode control and voltage feedback.Simulation shows that,as for single-machine infinite-bus system,nonlinear optimal excitation controller with fuzzy-PI double mode control and voltage feedback enjoys better adaptability and robustness in the suppression of dynamic environment.