摘要
利用基尔霍夫定律建立STATCOM开关函数模型,采用反馈线性化解耦控制方法,实现STATCOM非线性系统有功电流和无功电流的解耦,并基于线性控制理论中的极点配置方法为解耦线性化模型设计了控制器;并根据瞬时无功功率理论对负载线路中的无功电流进行动态实时检测,作为STATCOM补偿无功功率的给定,实现对无功变化负载的快速响应。仿真实验结果表明,所设计的控制系统实现了对STATCOM的有效控制,保持其直流端口电压稳定于给定值,控制系统具有补偿精度高、动态响应快的优点。
The nonlinear states equations of STATCOM is proposed based on Kirchhoff Law and decoupled model of STATCOM＇ s active and reactive current is obtained via feedback linearization method. Moreover, controller for the decoupled model is designed by utilizing pole placement method of modem control theory. To achieve fast dynamic control of reactive power, reactive current of line is obtained for the reference of STATCOM based on instantaneous reactive power theory. The accuracy and validity of the proposed control system is verified by simulation results and the DC voltage of STATCOM is stabilized effectively in the system.
出处
《控制工程》
CSCD
北大核心
2011年第3期327-330,376,共5页
Control Engineering of China
基金
国家自然科学基金资助项目(60871036)
