用于静止无功补偿器的非线性状态PI控制器

The Nonlinear State PI Controller for Static Var Compensator

针对电力系统的强非线性和不确定性，运用非线性状态PI控制直接对其不确定对象进行设计，能同时改善电力系统功角稳定和装设点电压动态特性的静止无功补偿器（SVC），避免了基于反馈线性化理论的非线性SVC控制器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。仿真计算表明非线性状态PI型静止无功补偿控制器能有效地改善系统的动态特性。

 As for the strong nonlinear and uncertain characteristic of the power system the nonlinear state PI controller is used to design Static Var CompensatorSVC in this paper． The proposed SVC controller can improve the power angle stability of power system and local voltage characteristics of SVC． The shortcoming of general nonlinear SVC controller 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 simulation suggests that the nonlinear state PI SVC controller can improve dynamic stability of power system effectively．