WIND POWER PLANT COMPRISING A REACTIVE POWER MODULE FOR SUPPORTING A POWER SUPPLY SYSTEM AND CORRESPONDING METHOD

摘要

"WIND POWER PLANT COMPRISING A REACTIVE POWER MODULE FOR SUPPORTINGT A POWER SUPPLY SYSTEM AND DCORRESPONDING METHOD" The invention relates to a wind turbine with a rotor, a generator driven by it, which generates electrical power and de4livers it to a power system, and a control unit which controls the operation of the plant and has a reactive-power control module. According to the invention, it is provided that the control unit has aq determining device for a safe minimum active power. Furthermore, it comprises a limiting device for the reactive-power control module, in such a manner that the reactive power is limited to such a measure that the safe minimum active power is swtill available, taking into consideration the available apparent power. As a result, the total current generated, apart from the active current required for the safe operation of the plant, can be fed into the power system as reactive current as backup in the case of a voltage drop. The invention is also related to a corresponding method.