Holttinen, H.H.HolttinenOrths, A.G.A.G.OrthsEriksen, P.B.P.B.EriksenHidalgo, J.J.HidalgoEstanqueiro, A.A.EstanqueiroGroome, F.F.GroomeCoughlan, Y.Y.CoughlanNeumann, H.H.NeumannLange, B.B.LangeHulle, F.V.F.V.HulleDudurych, I.I.Dudurych2022-03-042022-03-042011https://publica.fraunhofer.de/handle/publica/22626610.1109/MPE.2011.942351The power systems in denmark, portugal, Spain, Ireland, and Germany have some of the highest wind penetrations in the world, as is shown in a graph.en621journal article