| 摘要 |
The invention concerns a method for detecting ice on a wind energy plant, in particular on a rotor of the wind energy plant, having at least one rotor blade, a heating means for heating the at least one rotor blade and a temperature sensor, the method being characterised in that the temperature sensor is designed to detect a temperature signature in the form of a temperature change at at least one measuring point on a surface of the rotor blade, and comprises the following steps: specifying a reference temperature signature of the rotor blade, which reference temperature signature describes the temperature change at the at least one measuring point on the surface of the rotor blade when the wind energy plant is in an ice-free state; heating the at least one rotor blade at the at least one measuring point on the surface of the rotor blade by means of the heating means; detecting the temperature signature for the at least one measuring point on the surface of the rotor blade during heating; comparing the detected temperature signature with the reference temperature signature; determining an evaluation result on the basis of said comparison; and assigning the evaluation result to an ice-covered state of the wind energy plant if a deviation between the detected temperature signature and the reference temperature signature is determined, or otherwise assigning said evaluation result to the ice-free state of the wind energy plant. The invention also relates to an assembly for detecting ice on a wind energy plant. |
