Research on MMC-HVDC Oscillation Suppression Characteristics Based on Virtual Synchronous Generator Control

China has abundant wind power resources, and in recent years, the technology and engineering of wind power transmission through MMC-HVDC have emerged in China, such as the Rudong Wind Power Project and the Zhangbei DC Power Grid Project. The oscillation problem between MMC-HVDC and AC systems is a difficult problem to solve perfectly. This article analyses the characteristics of MMC-HVDC using virtual synchronous generator control technology. The parameters of virtual synchronous generator technology are important factors affecting fault traversal and oscillation characteristics, as pointed out in this article. The amplitude frequency and phase frequency characteristics of the virtual synchronous generator are obtained through frequency scanning. Finally, the principles and timing of the oscillation suppression strategy are proposed.