Method for operation of a wind energy installation

F - Mech Eng,Light,Heat,Weapons – 03 – D

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F03D 11/00 (2006.01) F03D 1/00 (2006.01)

Patent

CA 2562600

The invention relates to a method for operation of a wind energy installation (10), with the wind energy installation (10) having a rotor (18) which can be driven by wind, having at least one rotor blade (22), a generator for conversion of the mechanical energy of the rotor (18) to electrical energy, as well as a tower (14) on which the rotor (18) is arranged. At least one measurement variable is measured, preferably more than once, by means of a suitable measurement device during operation of the wind energy installation (10), which measurement variable is a measure of the bending of the rotor blade (22) in the tower direction as a result of a given wind load, and is thus a measure of the risk of the rotor blade (22) colliding with the tower (14) of the wind energy installation (10) as it passes the tower, with at least one operating parameter of the wind energy installation (10) being adjusted as a function of this measurement variable for determination of the rotor blade bending.

Cette invention se rapporte à une méthode qui permet d'exploiter une installation éolienne (10) qui comprend les éléments qui suivent. Un rotor (18) entraîné par le vent, et pourvu d'au moins une ailette (22); un générateur pour convertir l'énergie mécanique du rotor (18) en énergie électrique; ainsi qu'un pylône (14) sur lequel est aménagé le rotor (18). Au moins une variable est mesurée, de préférence plusieurs fois, au moyen d'un dispositif de mesure approprié lors du fonctionnement de l'installation éolienne (10). Cette variable est une mesure de la flexion de l'ailette (22) dans le sens du pylône, en raison d'une charge de vent donnée. Il s'agit donc d'une mesure du risque de heurt de l'ailette (22) avec le pylône (14) de l'installation éolienne (10), lorsque cette ailette dépasse le pylône. Au moins un paramètre de service de l'installation éolienne (10) est réglé en fonction de cette variable de mesure pour déterminer la flexion de l'ailette.

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