关于交直流并列输电系统的控制策略研究

Study on Control Tactics about AC-DC Parallel Transmission System

提出了一种针对交直流并联输电系统的非线性变结构控制方法。它使用状态反馈精确线性化的方法,将该非线性系统线性化为一个完全可控的线性系统,再结合变结构控制理论,即利用滑动模态对系统的摄动和外部干扰的不变性,设计了非线性变结构控制器。仿真结果表明,非线性变结构控制可以有效地调节直流线路的传输功率,保证交直流系统的稳定性。

This paper brings forward a nonlinear variable structure controller for the system of AC paralleled with DC. it turns a nonlinear system into a controlled linear system with the way of state-feedback accurate linearization. To connected with the theory of variable structure control, it makes use of the sliding mode in- variability toward the perturbation of system and exterior. And it designs the nonlinear variable structure con- troller. The result indicates the nonlinear variable structure control can adiust the transmission power of DC line effectively, and assure the stability of the AC-DC system.