Correcting measured wind characteristic of a wind turbine
AssigneeSiemens Gamesa Renewable Energy A/S
InventorsPer Egedal, Thomas Esbensen, Gustav Hoegh
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Abstract
Provided is a method of correcting a measurement value of least one wind characteristic, in particular wind speed and/or wind direction, related to a wind turbine having a rotor with plural rotor blades at least one having an adaptable flow regulating device installed, the method including: measuring a value of the wind characteristic; obtaining state information of the adaptable flow regulating device; and determining a corrected value of the wind characteristic based on the measured value of the wind characteristic and the state information of the adaptable flow regulating device.
Claims19
A method of correcting a measurement value of least one wind characteristic, related to a wind turbine having a rotor with plural rotor blades, at least one having an adaptable flow regulating device installed, the method comprising:
- measuring a value of the wind characteristic;
- obtaining state information of the adaptable flow regulating device;
- and
- determining a corrected value of the wind characteristic based on the measured value of the wind characteristic and the state information of the adaptable flow regulating device;
- wherein the wind characteristic includes wind direction, and
- wherein a value of wind direction is used as a reliable value when setting up a correction function, or wherein a derived value of the wind direction, as derived by performing a hill climbing algorithm in which a nacelle orientation is changed until most power output is obtained, is used as a reliable value when setting up a correction function.
A method of controlling a wind turbine, the method comprising:
- correcting a measurement value of at least one wind characteristic by measuring the measurement value of the at least one wind characteristic, obtaining state information of an adaptable flow regulating device of the wind turbine, and determining a corrected value of the at least one wind characteristic based on the measured value of the wind characteristic and the state information of the adaptable flow regulating device;
- and
- controlling the wind turbine based on the corrected measurement value of the wind characteristic,
- wherein the wind characteristic includes wind direction, and
- wherein a value of wind direction is used as a reliable value when setting up a correction function, or wherein a derived value of the wind direction, as derived by performing a hill climbing algorithm in which a nacelle orientation is changed until most power output is obtained, is used as a reliable value when setting up the correction function.
An arrangement for correcting a measurement value of least one wind characteristic, related to a wind turbine having a rotor with plural rotor blades, at least one having an adaptable flow regulating device installed, the arrangement comprising:
- a sensor adapted to measure a value of the wind characteristic;
- an input module adapted to obtain state information of the adaptable flow regulating device;
- and
- a processor adapted to determine a corrected value of the wind characteristic based on the measured value of the wind characteristic and the state information of the adaptable flow regulating device;
- wherein the wind characteristic includes wind direction, and
- wherein a value of wind direction measured is used as a reliable value when setting up a correction function, or wherein a derived value of the wind direction, as derived by performing a hill climbing algorithm in which a nacelle orientation is changed until most power output is obtained, is used as a reliable value when setting up a correction function.
Dependencies are inferred from the claim text.