Operation and control of wind farm connected to grid using multiterminal VSC-HVDC

Wind energy is one of the most important sources for renewable energy that has been utilizing worldwide. Interconnecting the wind farm to the grid is a noteworthy issue in the modern power system. In this paper considered wind farm composed of variable speed wind turbines driving squirrel cage induction generators. HVDC connection based on Voltage Source Converter (VSC) is selected for interconnecting the wind farm to the grid. The proposed wind farm is 50 MW, consists of 10 induction generators based 5 MW generators along with two VSC, while the turbines are clustered in two groups and the space between turbines in each group is 300 m. Perturbation and observation method has been used to obtain the maximum power from turbines. Investigation on transient and normal operation of the system based PSCAD/EMTDC software has been done. Simulation results show fine operation of the system even when the severe fault has been applied.