Patent ID: 9645034
Date: 2017-05-09
CPC Classifications: F03D,F05B,G01L

Claim:
1. A method of operating a wind power installation that has an aerodynamic rotor that is a horizontal-axis rotor having a hub with at least one rotor blade, and provided on the rotor is at least one load measuring means for detecting a loading on the rotor, the method comprising: orientating the rotor of the wind power installation with a slight or no wind loading; rotating the rotor through a single complete revolution of the rotor; recording a series of load measurements with the at least one load measuring means at regular intervals of the single complete revolution of the rotor, the series of load measurements including a first set of compression loads and a second set of stretching loads; totaling the absolute values of the series of load measurements; and calibrating the load measuring means, wherein calibrating comprises determining a sensitivity of the load measuring means based on the total of the absolute values of the series of the load measurements and previously known weight forces occurring on the rotor.