Method of checking a wind turbine in a wind farm for a yaw misalignment, method of monitoring a wind turbine in a wind farm and monitoring apparatus

摘要

A method of checking a wind turbine (1-8) in a wind farm comprising a number of wind turbines (1-1 to 1-20) for a yaw misalignment is provided. In this method, the yaw angles of at least a subset of wind turbines of the wind farm are ascertained; an average yaw angle is established from the ascertained yaw angles; and a yaw misalignment of the wind turbine (1-8) to be checked is identified by a deviation of its yaw angle from the average yaw angle by more than a threshold value.