The present invention concerns a method of operating a wind park having a plurality of wind power installations. The invention further concerns a wind power installation having an electrically excited generator and a wind park having a central apparatus for controlling the park. Therefore the object of the present invention is to provide a method of operating a wind park having a plurality of wind power installations, a wind power installation having an electrically excited generator and a wind park having a central apparatus for control of the park, wherein the execution of operational procedures is effected with a restricted or reduced power draw from the network (reference power). A method of operating a wind park comprising a plurality of wind power installations characterized in that the operational procedures of each wind power installation are controlled in such a way that electrical power is taken from the network only up to a predeterminable maximum value.