A Novel Multiterminal High Voltage DC Network in the Black Sea Region

This paper shows a novel multiterminal high voltage DC network, which uses modular multilevel converters and is located in the Black Sea region, in the Romanian offshore area. The concept of high voltage DC transmission is becoming essential to the successful integration of high-power renewable energy sources, especially in off-shore scenarios. Each terminal uses full-bridge submodules and vector control is deployed. Simulations are performed using detailed equivalent models, in order to show various operating conditions.