| 摘要 |
A method and system of determining an imbalance of a wind turbine is provided. In accordance with one embodiment, there is provided a method for determining an imbalance of a rotor of a wind turbine, the wind turbine comprising a tower and a nacelle mounted to the top of the tower, the tower having a central axis extending through the nacelle, the nacelle having a front end and a rear end, the rotor being rotatably connected to the nacelle typically at the front end for rotating about a rotor axis and having a plurality of rotor blades, the rotation of the rotor about the rotor axis defining a rotor plane, the method comprising: positioning a first vibration sensor towards the central axis of the tower with its sensitive axis of the first vibration sensor substantially parallel to the rotor plane; measuring a first data set of vibration data using the first vibration sensor over a first sampling period; and determining a counterweight for at least one blade in the rotor in accordance with the first data set of vibration data when a mass imbalance in the rotor exists.
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