METHOD FOR OPERATING A WIND POWER PLANT AND METHOD FOR OPERATING IT

摘要

The invention relates to Method of operating a wind turbine, wherein rotor windings of an induction generator, which comprises stator coils coupled to a voltage grid, fed with rotor currents by a feed-in unit are driven by a roto r of the wind turbine; wherein the frequencies of the fed-in rotor currents ar e controlled depending on the rotor rotation frequency and the feed-in unit is electrically decoupled from the rotor windings in the case predetermined variations of the grid voltage amplitude and the rotor current feed-in is resumed after the decoupling caused by the variation of the grid voltage amplitude, when the currents generated in the rotor windings by the variatio n have declined to a predetermined value.