Integration of PMSG-based offshore wind farm and HESS via grid-forming MMC-HVDC transmission

Flexible DC transmission has proved to be the most effective way to transmit large-scale offshore wind power over long distances. Therefore, grid-forming MMC-HVDC system connected with distributed energy sources is a promising research area due to its advantages of its good stability, operational flexibility and excellent dynamic response. The paper proposes the grid-following hydrogen energy storage system and PMSG-based wind turbine system integrated with the grid-forming MMC-HVDC model. Considering the computation burden of the complex power system, the wind turbine system and MMC-HVDC are simulated based on FPGA. The control schemes of MMC-HVDC, wind turbine system, and hydrogen energy storage system are analysed in the paper. All simulations are performed on the HYPERSIM platform. The results verify the performances of steady-state and transient tests of the distributed generators integrated with MMC-HVDC power system in real-time simulations.