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为了进一步改善高压直流 ( HVDC)输电系统的性能 ,采用在逆变侧定无功电流控制方式代替传统的定熄弧角控制 ,并将现代控制理论中非线性系统的状态反馈精确线性化方法与线性系统的变结构控制理论相结合 ,设计了非线性变结构控制器。仿真结果表明 ,所设计的新型控制器能够改善直流系统的性能 ,并提高交流系统的电压稳定性
In order to further improve the performance of high voltage direct current (HVDC) power transmission system, the control method of invertor side set reactive current control is adopted instead of the traditional fixed arc extinguishing angle control, and the state feedback accurate linearization method of nonlinear system in modern control theory The linear system variable structure control theory is combined to design a nonlinear variable structure controller. The simulation results show that the new controller designed can improve the performance of DC system and improve the voltage stability of AC system