WIND TURBINE BLADE DEFLECTION MONITORING SYSTEM AND METHOD FOR THE MONITORING OF WIND TURBINE BLADE DEFLECTION

摘要

The system comprises two or more sensors mounted in the wind turbine blade, each sensor comprising an accelerometer and/or a magnetic transducer. The sensors and their connectors are jointly encapsulated in a protective cover covered with a metallic shield. Blade deflection comprises the steps of estimating the variations around the average wind turbine blade deflection based on the signals from the sensors, estimating the average wind turbine blade deflection from calculations based on a combination of measured operational parameter, and estimating the absolute value of the blade deflection by combining the estimate of the variations around the average blade deflection with the estimate of the average blade deflection.