基于反馈线性化的静止同步串联补偿器变结构潮流控制研究

Study on Power Flow Control with Variable Structure Control for Synchronous Series Compensator Based on Feedback Linearization

静止同步串联补偿器(static synchonous series compensator,SSSC)是一种调节线路潮流和接入点电压的FACTS装置,采用输入-输出反馈线性化处理SSSC含滤波电容方程的5阶非线性等效数学模型,得到一个带约束条件的线性方程,运用变结构控制理论设计了SSSC的变结构控制器。最后利用Matlab/Simulink仿真验证了所设计的控制器达到了SSSC的控制潮流的效果,与PI控制相比,其性能有一定的优越性。

Static synchronous series compensator （SSSC） is a kind of FACTS devices to regulate line power flow and the volt- age at access point. The fifth - order nonlinear mathematical model of SSSC containing filter capacitor equation is processed by input/output feedback linearization to acquire linear equations with the constraints, and then the variable structure controller of SSSC is designed using variable structure control theory. Finally, the simulation in Matlab/Simulink dynamic simulation platform verifies the designed controller can achieve the.control effect for SSSC and has some advantages compared with PI control.