Analysis and Prospects of Status of Broadband Oscillation and Suppression Methods for New Energy Stations Connected to Power System

New energy installations in China have increased greatly, and the strategic goals of “emission peak” and “carbon neutrality” have been put forward. The high proportion of new energy grid has become the development trend of the future grid. However, the stability of power systems connected to large new energy stations is a serious problem, and broadband oscillation needs to be solved urgently. Aiming at the problem of wideband oscillation, the control strategy of new energy grid-connected inverter is introduced. Then, the modeling method of grid-connected power generation system and its advantages and disadvantages are introduced. The oscillation mechanism in the current research is also analyzed. Finally, several strategies for oscillation suppression are compared. The main points and limitations of the current research are pointed out from these aspects: control system and strategy, system modeling and analysis method, and broadband oscillation suppression methods. Future research directions are also given.