AC fault dynamic studies of islanded grid including HVDC links operating in VF-control

VSC-HVDC link can operate in VF-control (or grid-forming mode) when connected to a weak or islanded network to overcome the PQ-control (or grid-feeding) limitation. Up to now, the VF-control represents a challenge due to static and dynamic limits. This paper provides a dynamic performance, during AC faults, of HVDC link in VF-control connected to an islanded grid. The islanded grid is based on the Northern France network and includes synchronous generator and wind farm. The EMT-type simulations provides an insight on dynamic network behavior when HVDC is operating in VF-control.