SYSTEM AND METHOD FOR MONITORING AND CONTROLLING WIND TURBINE BLADE DEFLECTION

摘要

A system and method for monitoring and controlling the deflection of rotor blades of a wind turbine so as to prevent tower strikes is disclosed. The method includes operating the wind turbine at standard pitch angle settings. Another step includes monitoring a loading condition of the wind turbine over a predetermined time period. A further step includes tracking a number of wind condition deviations of a certain magnitude occurring during a predetermined time period. The method also include altering one or more of the standard pitch settings of the rotor blades in response to the number of wind condition deviations exceeding a wind deviation threshold and/or the loading condition exceeding a loading threshold as an exceedance indicates an increased probability of rotor blade deflection. The method further includes performing one or more additional corrective actions so as to reduce the probability of a rotor blade tower strike.

主权项

1. A method for monitoring and controlling deflection of rotor blades of a wind turbine, the method comprising:
operating the wind turbine at standard pitch angle settings for the rotor blades; monitoring a loading condition of the wind turbine over a predetermined time period; tracking a number of wind condition deviations of a certain magnitude occurring during the predetermined time period; and, altering one or more of the standard pitch angle settings of the rotor blades in response to the number of wind condition deviations exceeding a wind deviation threshold and the loading condition exceeding a loading threshold, wherein an exceedance above the wind deviation threshold and the loading threshold indicates an increased probability of a rotor blade deflection occurring in one or more of the rotor blades; and performing one or more corrective actions so as to reduce the probability of a rotor blade tower strike.