? methods for supplying electricity to an electrical supply network and for controlling a plurality of wind power installations, wind power installation, wind farm, and arranging a plurality of wind power installations or a plurality of wind farms?

摘要

The invention relates to a method for supplying electricity to an electrical supply network having a network voltage having a network frequency at a network connection point by means of at least one wind power installation or a power station or a generating plant consisting of at least one wind power installation, comprising the following steps: specifying a reference system having a reference frequency, a reference phasor having a reference angle, and a reference amplitude of a voltage of output to be generated, wherein the reference angle revolves at the reference frequency and the reference frequency substantially corresponds to the mains frequency; specify a phase angle as the phase angle between output voltage and mains voltage; calculate a feed angle, which revolves with the reference angle, from the specified phase angle so that the specified phase angle results as a phase angle between an output voltage generated at the feed angle and the mains when the reference frequency coincides with the mains frequency; generate the output voltage having a voltage amplitude depending on the reference amplitude, a frequency depending on the reference frequency and the supply angle and delayly tracking the mains voltage behavior by the reference system.