Protection of Multiterminal HVDC Grids based on Modular Multilevel Converters: DC Fault Ride-Through and AC Grid Support

High Voltage DC (HVDC) grids provide an efficient solution for the transmission of bulk power over long distances between the energy production and consumption centers. Up to now, most of the implemented dc connections are point-to-point, creating dc links to strengthen the existing, predominantly ac, electricity grid. However, to optimize the...