Availability model of wind and solution to immunize the generators against short time perturbations

Following a previously presented availability model of wind considered as a self-repairable system, the authors developed a new one based on over two years of continuously wind state monitoring in a given location. The new aspects are related to short time wind perturbations defined by its speed variations outside the generic useful speed limits, to establish the correspondent availability model and to bring out how to immunize a wind aggregate to some kind of wind perturbations based on the mechanical time constant and on the similar methods used to immunize the electrical drives against voltage dips. A case study is also presented with a parametrical analysis and numerical results. The research was done using the facilities offered by new laboratory, LACARP - Laboratory for Applied Research and Prototype Design of the Power Engineering Department.