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US 2012/0055247 A1Published application
Method and system for detecting an unusual operational condition of a wind turbine
OwnerJorge GONZALEZ CASTROinventor
Life of this patent
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Abstract
A method for detecting an unusual operational condition of a wind turbine is provided. The method includes measuring an actual imbalance of a rotor of said wind turbine, determining an imbalance deviation of the measured actual imbalance from an imbalance reference, and evaluating whether the imbalance deviation is above a predetermined imbalance threshold value.
Claims20
A method for detecting an unusual operational condition of a wind turbine, the method comprising:
- measuring an actual imbalance of a rotor of said wind turbine;
- determining an imbalance deviation of the measured actual imbalance from an imbalance reference;
- and
- evaluating whether the imbalance deviation is above a predetermined imbalance threshold value.
1 more element
A method for blade icing detection at a wind turbine, the method comprising:
- measuring an environmental temperature;
- measuring a deflection of a rotor shaft of said wind turbine;
- determining a bending moment of the rotor shaft on basis of the measured deflection;
- determining a deviation of the bending moment from a historical value of the bending moment;
- and
- detecting blade icing on basis of the measured environmental temperature and the determined deviation of the bending moment.
3 more elements
A wind turbine, comprising:
- a detection unit for detecting an unusual operational condition of the wind turbine, the detection unit having at least one proximity sensor for measuring a deflection of a rotor shaft of the wind turbine;
- a determination unit for determining a rotor imbalance on basis of the measured deflection;
- and
- an evaluation unit for comparing the determined rotor imbalance with an imbalance reference.
1 more element
Dependencies are inferred from the claim text.