Energy production losses due to iced blades and instruments at Nygårdsfjell, Sveg and Aapua

Abstract

Estimates of energy production losses caused by iced blades and meteorological instruments were performed for three wind power sites in Norway and Sweden. The turbine types are Vestas V90-2MW, Vestas V82-1.5MW and Siemens SWT-2.3-93. Analysis was performed with the same data processing for all of the three sites. One main conclusion is that an anemometer which can operate during icing conditions is absolutely necessary for analysis of power losses. According to the calculations performed, the energy losses were least severe at the Nygårdsfjell site and most severe at the Aapua site.