增强系统阻尼并保持电压精度的静止无功补偿器非线性最优预测控制

Nonlinear Optimal Predictive GDntroller for Static Var GDmpensator to Improve Power System Damping and to Maintain Voltage

以增加系统阻尼和维待电压水平为目的,基于非线性最优预测控制理论,设计出具有闭合形式解析控制律的SVC控制器.该控制器避免了非线性预测控制在线优化计算带来的大量计算负担,从而可满足实时控制的要求,且设计参数只有滚动预测时间及控制阶,因而便于工程实现及调试.仿真的结果表明,该控制器可有效地阻尼系统的振荡并能维持SVC接入点的电压水平.

The main objectives of this paper are to improve power system damping and to maintain voltage at the Static Vat Compensator （SVC） location bus simultaneously. A new controller for SVC with closed-form analytic solution nonlinear optimal predictive control （NOPC） law was proposed. The controller does not require online optimization and the huge calculation burden can be avoided, so that the demand of real-time control can be satisfied. In addition, there are only two design parameters, which are the predictive period and control order, so it is easy to implement and test in practical use. Simulation results have shown that the controller can not only attenuate power system oscillation effectively but also maintain voltage at the SVC bus locaiton.