Nowadays, the Transmission System Operators are dealing with an increasing share of wind power, thus issuing new grid requirements in order to maintain power system stability. The Wind Farms must provide grid support capabilities similar with conventional power plants. The purpose of this project is the implementation of a wind power control system in accordance with the grid regulations in Denmark. Modelling of the wind power system, grid connection techniques and the Wind Farm control architecture have been performed and analyzed. The active and reactive power control functions implemented in the model verify the powerful grid support that a Wind Farm can provide to the stability of the power system. A dynamic RMS simulation platform including a reduced model of a Wind Farm, a VSC-HVDC transmission system and a Wind Farm controller, has been implemented in Power Factory DIgSILENT and is available for future studies.