Patent ID: 8896142

Claim:
A wind turbine control method of at least one wind turbine comprising a rotor, a generator, a frequency converter, a control unit and means for connecting each wind turbine to a wind farm grid, said method comprising the steps, for each wind turbine, of: calculation of a voltage error (ΔV) based on a local voltage set point (V REF ) and a local measured voltage (V MED ), and calculation of an initial set point of reactive power (Q T ) to be generated based on the voltage error (ΔV), wherein said method further comprises the following steps of: limitation of the initial set point of reactive power (Q T ) by applying limits (Q —MAX , Q —MIN ) calculated on the basis of the local measured voltage (V MED ), thus obtaining at least one final set point of reactive power (Q —REF ); calculation of an apparent power available based on the local measured voltage (V MED ); and calculation of a maximum limit of active power (P —MAX ) depending on the final set point of reactive power (Q —REF ) and the apparent power available.