静止无功补偿器(SVC)的一种新型非线性鲁棒自适应控制设计方法

A Novel Improved Nonlinear Robust Adaptive Control Design Method of SVC

为提高提高多机电力系统的暂态稳定性,该文首先建立了静止无功补偿器(static var compensator,SVC)系统的一个含有时变参数不确定性的二阶非线性动态模型,然后在SVC动态模型的基础上,利用自适应控制技术和鲁棒控制技术设计了SVC系统的控制器。为了验证所设计的控制器的有效性,以一个经典的三机九母线电力系统作为测试系统,对鲁棒自适应SVC控制器与PID SVC控制器和反馈线性化SVC控制器分别进行了比较研究。仿真结果表明,与PID SVC控制器和反馈线性化SVC控制器相比,所提出的鲁棒自适应SVC控制器具有良好的性能。

In this paper, in order to enhance the transient stability of multi-machine power system, a second order nonlinear dynamical model of static var compensator （SVC） with time varying parameter uncertainties is constructed firstly. Based on the dynamical model, adaptive and robust control techniques are employed to deal with the time varying parameter uncertainties and design SVC controller. A three-machine nine-bus system is chosen to testify the effectiveness of the proposed controller of SVC compared with PID SVC controller and the SVC controller based on direct feedback linearization （DFL） method, respectively. The simulation results show that performances of the proposed nonlinear robust adaptive controller Have an advantage over those of the above mentioned other two controllers in voltage stability enhancement.