向无源网络供电的VSC-HVDC系统无源控制研究

Passive Control Design of VSC-HVDC System Connected to Passive Network

推导了轻型高压直流(VSC-HVDC)输电系统的端口受控耗散哈密顿系统(PCHD)模型,针对向无源网络供电的VSC-HVDC系统提出了一种无源控制新方法。该方法将换流站模型VSC-HVDC系统等效成一个具有耗散性质的无源系统,通过互联与阻尼配置的方法设计无源控制器,追踪参考电流,实现对无源网络交流电压的恒定控制。最后,通过仿真实验验证了所设计的无源控制器的有效性。

The port -controlled Hamilton with dissipation （PCHD） model is derived and a new passive control strategy is proposed for transmitting power to passive network by means of VSC - HVDC system. In the theory, the converter model of VSC - HVDC is equivalent to a dissipative passive system, and the passive controllers are designed by intereonneetion and damping configuration to trace the reference currents. Finally, the simulation results show that the 0ro0osed controller is effective.