用于静止无功补偿器的非线性PID控制器

THE NEW NONLINEAR PID CONTROLLER FOR SVC

为了克服常规PID稳定范围较小、适应性及鲁棒性较差及微分信号难于提取等缺陷,应用非线性控制理论,基于非线性跟踪微分器及PID校正的思想,设计了一种用于静止无功补偿器(SVC)的新型非线性PID控制器。这种控制器具有不依赖于被控系统知识的特点,对系统工作点和网络结构的变化具有良好的鲁棒性且结构简单,易于实现。数值仿真结果表明,这种非线性PID控制器的控制品质好,不但能有效地改善电力系统功角稳定性和SVC安装点的电压动态特性,而且具有较强的适应性和鲁棒性。

In this paper a nonlinear PID controller is deligned for Static Var Compensator(SVC). The controller has many good characteristics, such as not dependent on the model of controlled system, having valuable robustness about working point and the with structure of the systems, easy to realize, and having simple structure. The simulation manifests that the controller can not only improve power angle stability and local voltage characteristics of SVC, but also has strong compatibility and robustness.