Assessment of Multiterminal HVDC Systems with Grid-Forming Converters in the Brazilian Power System

The growing integration of variable renewable energy sources (knonw as VRES), particularly wind and solar sources, is significantly reshaping the operating dynamics of large-scale power systems around the world. Mainly in Brazil, the Northeast region has emerged as a key renewable generation hub, while the main consumption centers remain predominantly located in the southeast and south region. This characteristic introduces technical challenges for longdistance power transmission and system stability, particularly under high & extreme VRES penetration scenarios. In this context, Multiterminal Transmission Direct Current (MTDC) based on grid-forming Voltage Source Converters (VSC) have pointed out as a promising solution for enhancing transmission capacity and system resilience.