Method And System For Predicting The Occurrence Of A Wind Gust At A Wind Turbine
AssigneeAlston 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.
Claims15
Method of predicting the occurrence of a wind gust at a wind turbine comprising:
- obtaining, with a predetermined frequency, the values of at least one parameter measured for the wind turbine as input data;
- selecting a group of input data of predetermined size that was most recently obtained;
- calculating the probability of the occurrence of a wind gust on the basis of said selected group of input data;
- 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.
Method according to any previous claim, wherein obtaining, with a predetermined frequency, the values of at least one parameter measured for the wind turbine as input data comprises obtaining input on the value of wind speed at the nacelle of said wind turbine and/or rotor shaft speed and/or generator power.
Method according to any previous claim, wherein obtaining, with a predetermined frequency, the values of at least one parameter measured for the wind turbine as input data comprises obtaining input on the values of two parameters measured in the wind turbine, preferably wind speed measured at the nacelle of the wind turbine, and generator power.
Method according to any previous claim, wherein said predetermined frequency is between 10 and 1000 times per second, more preferably between 10 and 100 times per second, most preferably approximately 20 times per second.
Method according to any previous claim, wherein said group of input data of predetermined size covers a period of between 1 and 10 seconds, preferably between 2 and 8 seconds, more preferably of approximately 5 seconds.
Method according to any previous claim, wherein said predetermined probability level is between approximately 40% and approximately 85%.
A computer system for predicting the occurrence of a wind gust, comprising:
- a module for obtaining, with a predetermined frequency, input data on the values of at least one parameter measured in the wind turbine;
- a module for selecting a group of input data of predetermined size that was most recently obtained;
- a module for calculating the probability of the occurrence of a wind gust on the basis of said selected group of input data;
- a module for verifying if the calculated probability of the occurrence of a wind gust is above a predetermined probability level;
- and a module for predicting the occurrence of a wind gust if the calculated probability is above said predetermined probability level.
Dependencies are inferred from the claim text.