抑制电力系统低频振荡的UPFC控制器设计  

UPFC Controller Design for Low Frequency Oscillation of Power System

作　　者：高正中 肖佳宜 申梦茜 李梓萌 

机构地区：[1]山东科技大学电气与自动化工程学院,山东青岛266590

出　　处：《山东科技大学学报（自然科学版）》2017年第5期91-96,116,共7页Journal of Shandong University of Science and Technology(Natural Science)

基　　金：中国博士后特别资助基金项目(2015T80729);青岛市博士后研究人员应用研究项目(2015190)

摘　　要：研究了统一潮流控制器(unified power flow controller,UPFC)抑制电力系统低频振荡的系统级控制策略,首先利用Park变换得到了UPFC的动态方程,并采用逆系统解耦控制方法将非线性控制系统线性化,实现了输入信号的解耦,然后结合PI控制策略完成了UPFC主控制器的设计。为提高UPFC抑制电力系统低频振荡的效果,以发电机角速度变化量作为反馈信号,设计了UPFC阻尼控制器。最后在MATLAB/SIMULINK平台中,对所设计的控制器进行仿真研究,仿真结果表明,UPFC控制器具有抑制电力系统低频振荡的效果,加入阻尼控制器后,动态响应时间缩短,系统可以更快的恢复稳定状态。In this paper,the system level control strategy for UPFC suppression of low frequency oscillation in power system was studied.Firstly,the dynamic equation of UPFC was obtained by using Park transform,and the nonlinear control system was linearized by the inverse system decoupling control method so that the decoupling of the input signal was realized.Then,by combining with the PI control strategy,the design of the UPFC main controller was completed.To improve the effect of UPFC on low frequency oscillation of power system,the UPFC damping controller was designed with the change of angular velocity as the feedback signal.Finally,the designed controller was simulated on the MATLAB/SIMULINK platform and the results show that the UPFC controller can inhibit low frequency oscillation in power system,and that the dynamic response time is shortened and the system can reach stable state faster after damping controller is added.

关 键 词：统一潮流控制器 控制器设计 电力系统 低频振荡 阻尼控制器 

分 类 号：TM712[电气工程—电力系统及自动化]