METHOD AND APPARATUS FOR PROTECTING WIND TURBINES FROM EXTREME EVENTS
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United States of America Patent
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Issued Date -
Mar 13, 2014
app pub date -
Apr 30, 2012
filing date -
Apr 28, 2011
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A wind turbine has a scanning Lidar arranged on the nacelle. The Lidar has a single scanning beam which scans about a substantially vertical axis to sense wind related data in a measurement volume a predetermined distance from the Lidar. Fast Fourier transforms of data from a plurality of points in the measurement volume are analysed to derive a peak velocity and a measure of variance. A controller receives the peak velocity and measure of variance as inputs and generates an output if the controller determines that the input data shows that the wind conditions are such that damage to the wind turbine is likely.
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