区域间联络线上的STATCOM的鲁棒控制器设计  

Robust controller design for STATCOMs installed in connection lines

作　　者：王文聪[1] 梅生伟[1] 刘锋[1] 

机构地区：[1]清华大学电机工程与应用电子技术系,北京100084

出　　处：《清华大学学报（自然科学版）》2004年第4期433-437,共5页Journal of Tsinghua University(Science and Technology)

基　　金：国家"九七三"重点基础研究基金项目(G1998020309);国家自然科学基金资助项目(59837270)

摘　　要：针对互联电力系统的弱阻尼问题,该文为装设在区域间联络线上的静止同步无功补偿器(STATCOM)提出了以阻尼区域间振荡为目标并保证电压稳态精度的鲁棒控制设计方法。该法基于STATCOM的一阶电流源模型,将装有STATCOM的多机系统等值为两机三母线,由此建立了综合考虑机电振荡和电压动态的四阶模型;然后运用反馈线性化方法和H∞控制理论设计了考虑干扰影响的鲁棒控制器。依据所设计的控制器分别在一个四机示例系统和四川省网实际系统中进行了计算机仿真,结果证明了该文所提出的控制器能有效地阻尼区域间振荡,提高传输容量。A robust controller for STATCOMs (static synchronous compensators) installed on long connection lines was developed to damp inter-area oscillations and maintain steady voltages to reduce weak damping in interconnected power systems. The method treats the STATCOM as a first-order current resource and simplifies the multi-machine system into a two-machine three-bus model to constructs a fourth-order model which integrates the electromechanical oscillations and voltage dynamics. Feedback linearization and H_∞ control theory were used to design a robust controller. Computer simulations on a four-machine system of the Sichuan provincial power system have showed that the control strategy can effectively damp inter-area oscillations and increase transmission capacity.

关 键 词：区域间联络线 STATCOM的鲁棒控制器 设计 电力系统 区域间振荡 静止同步无功补偿器 

分 类 号：TM712[电气工程—电力系统及自动化] TM571