METHOD AND SYSTEM FOR WIND GUST DETECTION IN A WIND TURBINE

摘要

A method for wind gust detection and classification in a wind turbine. The wind turbine includes a tower and a rotor provided with a number of rotor blades on a rotor axis. The rotor is arranged on the tower. The method includes a) collecting data of a mechanical loading condition of the wind turbine, the data being associated with at least two loads exerted on the construction of the wind turbine; b) converting the data to the associated loads e in a non-rotating reference frame; c) monitoring temporal evolutions of the loads, comprising: c1) determining steady state components of the loads; c2) obtaining residuals of the loads by removing the respective steady state component from the loads; d) detecting by a test condition if the temporal evolutions of the residuals indicate that a wind gust is evolving; e) classifying the wind gust in one of a plurality of predetermined wind gust classes based on predetermined characteristics for the temporal evolutions of the residuals of the loads; f) based on the result of the classification, generating signals for adjusting the operation of the wind turbine.