A windpark includes at least two wind energy installations, each of which installations comprises a rotor, a generator driven by the rotor and a control device, and which are connected via connecting lines to a main line. In one aspect of the invention, the at least one aperture is a slot. A method of fixedly securing a pilot boss to a torque converter cover, the torque converter cover including a protrusion from an outer surface of the cover and symmetrical about an axis of rotation for the cover and a pilot boss including a body having a recessed portion, the method including the step of matingly engaging said recessed portion to the protrusion. The present invention includes a weighted fair queueing system where the position of the next service in a best efforts system for using bandwidth which is not used by committed bandwidth is determined based on the length of the frame and the weight of the particular flow.