Applying power margin tracking droop control to flexible operation in multi-terminal DC collector systems of renewable generation

An emerging multi-terminal looped DC (MTDC) collector system is now advocated for collecting and transferring large-scale renewable generation. However, it remains an open question as to improving the cooperative control capability of looped converter stations for flexible and robust response to renewable grid-connection fluctuation. This paper addresses this problem with a novel Power Margin Trac...