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为提高多机电力系统的稳定性 ,提出了一种新型的非线性分散控制器 (NDC)。该控制器的设计是基于输入输出反馈线性化控制策略 ,并采用估计的状态和定义为一个虚拟状态的扰动来反映系统的非线性、不确定和各子系统的外部动态的综合作用。鲁棒滑动模态观测器被用来估计系统的状态和扰动。该控制器的设计不需要系统详细的知识 ,易于实现分散控制。 3机系统的仿真结果表明了所提非线性分散控制器能有效地提高系统的稳定性
In order to improve the stability of multi-machine power system, a new type of nonlinear decentralized controller (NDC) is proposed. The design of the controller is based on input-output feedback linearization control strategy, and uses the estimated state and the disturbance defined as a virtual state to reflect the nonlinearity of the system, the uncertainties and the combined effects of external dynamics of the subsystems. Robust sliding mode observer is used to estimate the state and disturbance of the system. The design of the controller does not require detailed system knowledge, easy to achieve decentralized control. The simulation results of the 3-machine system show that the proposed nonlinear decentralized controller can effectively improve the stability of the system