Method for evaluating incident flow in rotor blade of wind power generation facility, method for controlling wind power generation facility, and wind power generation facility

摘要

A method for determining an incident flow at a rotor blade of a wind power installation is provided. The method includes recording at least part of a pressure spectrum of pressure, in particular wall pressure, at the rotor blade at at least one measurement position. The method includes determining at least two characteristic values from the pressure spectrum, determining an indicator value from a relationship between the at least two characteristic values and assessing whether a critical incident flow is present depending on the indicator value.