Method for predicting the accumulation of ice on a rotor blade of a wind turbine and the use thereof

Abstract

Embodiments describe a method for predicting the accumulation of ice on a rotor blade () of a wind turbine () and the use thereof. The method comprises defining an upper threshold value (So) and/or a lower threshold value (Su) for a system variable (S) which is associated with the mass of the rotor blade () and/or with the mass of an ice attachment () of the rotor blade (); acquiring system variable data during an acquisition time period (T); carrying out a compensation calculation of the curve profile for a prediction time period (Δt', Δt′, Δt′) from the system variable data which were acquired during a partial time period (Δt, Δt, Δt) of the acquisition time period (T) in order to obtain a prediction curve (N, N, N); carrying out at least one further compensation calculation of the curve profile for a further prediction time period (Δt′, Δt′, Δt′) from the system variable data which were acquired during another partial time period (Δt, Δt, Δt) of the acquisition time period (T) in order to obtain a further prediction curve (N, N, N); determining whether or not the upper threshold value (So) will be exceeded by one or more of the prediction curves (N, N, N) in future and/or whether the lower threshold value (Su) will not be undershot by one or more of the prediction curves (N, N, N) in the future; and outputting the result of the determination; and outputting the result of the determination.