Vestas Wind Systems A/s

Halliburton Energy Services, Inc.

Wanying Chen

Yu Zhou

Khoon Peng Lim

Keeley Burke

Pey Yen Siew

K J Karthik

Amit Kalyani

Karthik Kj

Curtis Jacks

Curtis John Jacks

Lim Khoon Peng

Karthik KJ

A method for performing condition monitoring on a plurality of wind turbines of a wind farm comprises for each wind turbine, obtaining at least one vibration signal representing vibrations of one or more monitored components; generating a plurality of faulty frequency indexes on the basis of one or more of the obtained vibration signals, and in such a manner that variations in rotational speed of one or more rotating shafts of the wind turbine are filtered; comparing faulty frequency indexes originating from different wind turbines; and determining the condition of each of the monitored components based on the comparison.

Method for performing condition monitoring in a wind farm

The present invention relates to a method of controlling a wind turbine having at least one blade and a controller, including: detect location of foreign material adhered to the blade by sensors mounted on the blade and communicatively coupled to the controller; determine the resonance mode of the blade to be excited based on the location of the foreign material by the controller; and excite the blade to the resonance mode; wherein the resonance mode is one higher than the first order resonance mode. The present invention also relates to a wind turbine using the method.

Method of controlling a wind turbine, and a wind turbine

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Singapore, Singapore

Wanying Chen