基于双环解耦的CSC-STATCOM控制器的设计研究

Study on the CSC-STATCOM Controller Based on Double-loop Decoupling

提出一种基于电流型换流器的双环解耦控制无功电流补偿的方法,该方法利用锁相环和瞬时无功电流检测理论、SPWM调制方法控制CSC-STATCOM的输出无功电流来调节输电线路上的无功传输。将CSC-STATCOM的数学模型通过d-q变换实现解耦控制。同时,直流侧电感采用PI控制使电流稳压。最后,在MATLAB/SIMULIN软件下进行仿真验证,证实了本控制方法的优越性。

The paper presents a method that double-loop decoupling controls reactive current compensation based on current mode converter. The method controls CSC-STATCOM output reactive current by phase locked loop,instantaneous reactive current detection theory and SPWM to regulate reactive power in the transmission lines, making CSC-STATCOM mathematical model achieve the decoupling control by dq transformation. Meanwhile, the inductance on the side of DC is adopted PI control to make the current steady. Finally, the simulatisn test is carried out under MATLAB/SIMULIN software, which oroves superiority of the control method.