Method and system for predicting the occurrence of a wind gust at a wind turbine
AssigneeAlstom Wind, S.L.U.
InventorJosé Miguel Garate Álvaro
Life of this patent
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Abstract
A method of predicting the occurrence of a wind gust at a wind turbine is described. The values of at least one parameter measured for the wind turbine as input data are obtained on a predetermined frequency. A group of input data of predetermined size that was most recently obtained is selected. The probability of the occurrence of a wind gust is calculated based on the selected group of input data. The calculated probability that a wind gust will occur is verified to be above a predetermined probability level. And the occurrence of the wind gust is predicted.
Claims10
A method for predicting an impending wind gust at a wind turbine comprising:
- obtaining as input data, with a predetermined frequency, measured values of two or more parameters selected from wind speed, rotor speed and generator power of the wind turbine;
- selecting a group of input data of predetermined size consisting of the most recently obtained two or more selected parameters;
- calculating, via a computing device having a processor, the probability of an occurrence of a wind gust on the basis of said selected group of input data by determining the resemblance of the selected group of input data with data of the two or more selected parameters, wherein the data of the two or more selected parameters being used to determine the resemblance comprises predetermined patterns of the two or more selected parameters during one or more predetermined wind gusts conditions;
- verifying if the calculated probability of the occurrence of a wind gust is above a predetermined probability level;
- and
- predicting the occurrence of a wind gust if the calculated probability is above said predetermined probability level.
The method of claim wherein the two or more selected parameters are wind speed measured at the nacelle of the wind turbine and generator power.
A wind turbine, comprising:
- a wind turbine control system adapted to
- obtain as input data, with a predetermined frequency, measured values of two or more parameters selected from wind speed, rotor speed and generator power of the wind turbine;
- select a group of input data of predetermined size consisting of the most recently obtained two or more selected parameters;
- calculate the probability of an occurrence of a wind gust on the basis of said selected group of input data by determining the resemblance of the selected group of input data with data of the two or more selected parameters, wherein the data of the two or more selected parameters being used to determine the resemblance comprises predetermined patterns of the two or more selected parameters during one or more predetermined wind gusts conditions,
- verify if the calculated probability of the occurrence of a wind gust is above a predetermined probability level;
- and
- predict the occurrence of a wind gust if the calculated probability is above said predetermined probability level.
Dependencies are inferred from the claim text.