Modelling the provision of inertial response from variable speed wind turbines

One of the key issues around wind energy is how to provide acceptable power system frequency control in the context of high wind penetration. The time varying nature of intermittent wind generation acts as a continuous disturbance to the power system. Wind turbines can be controlled to make a contribution to frequency response, in particular inertial response, although variations in wind speed mean that this potential must be assessed probabilistically. A wind turbine model is presented and used to show the impact of wind speed transients on inertial response from a variable speed wind turbine.