抗饱和广域时滞阻尼控制器参量Lyapunov设计策略

Research on Design Method of Anti-Windup Wide-Area Time-Delay Damping Controller

广域阻尼控制器能够有效阻尼区间低频振荡,但远方反馈信号的传输时延,是影响广域阻尼控制器阻尼效果甚至系统稳定的重要因素;另外,执行器饱和会导致控制器性能恶化甚至威胁系统稳定,因此通信时滞和执行器饱和都会影响阻尼控制器效果,该文在建立的电力系统线性化模型中同时考虑广域测量信号时滞和执行器饱和,并基于参量Lyapunov方法设计得到了一种新型的广域时滞阻尼抗饱和控制器,控制器控制律和参数值可以通过参量Lyapunov方程直接得到。改进10机39节点系统上的仿真,与基于线性矩阵不等式(LMI)方法设计控制器的控制效果进行对比,结果证实了所提控制器设计方法的有效性和优越性。

Wide-area damping controller can effectively damp inter-area low-frequency oscillation.The resulting time delay has become an important factor affecting controller performance.Therefore,time delay and wind-up will affect the damping controller effect.The linearized model of power systems is established taking the unavoidable transmission time delay of the wide-area measurement signals and wind-up into consideration.A new type of anti-windup wide-area time-delay damping controller is designed based on parametric Lyapunov method.The test on the New England system confirmed the control effect of the controller proposed in this paper.