Operational Method of Horizontal Axis Wind Turbine with Icing in Cold Climates

Abstract

Wind turbines in cold climates are defined as wind turbine operating in an environment where the temperature below the operating limit temperature (-10℃) of a standard wind turbine and /or meteorological icing occurs to the wind turbine . In this paper, the aerodynamic characteristics change due to icing is determined based on the IEC standard. The wind turbine performance and the load of icing airfoil was clarified by numerical analysis. Also, the effect of icing on the reduction of rated power was evaluated. As result of the analysis, the wind speed that shows rated power of wind turbine with icing airfoil is higher than that without icing, and the maximum thrust with icing airfoil is higher. Also, the optimum limit rate of the rated power with icing airfoil was estimated by a view point of the maximum thrust.