Method for lubricating at least one blade pitch bearing of a wind turbine

摘要

A method for lubricating at least one blade pitch bearing of a wind turbine is provided. The wind turbine includes a rotor hub with a number of rotor blades, with each rotor blade being supported to the rotor hub by at least one blade pitch bearing. At least one rotor blade is pitchable and a rotor blade pitch control device adapted to control pitching of the at least one rotor blade. The state of lubrication of at least one blade pitch bearing by a lubrication detection device generating at least one lubrication information signal indicating a degree of lubrication of the at least one blade pitch bearing by measuring the electrical capacitance and/or resistance of the at least one blade pitch bearing. A rotor blade lubricating device is actuated to perform at least one action to lubricate the at least one blade pitch bearing, if the lubrication information signal indicates that the at least one blade pitch bearing is not sufficiently lubricated.

主权项

1. A method for lubricating at least one blade pitch bearing of a variable-pitch wind turbine comprising a rotor hub with a plurality of rotor blades, with each rotor blade being supported to the rotor hub by at least one blade pitch bearing, at least one rotor blade is pitchable and comprising a rotor blade pitch control device adapted to control pitching of the at least one rotor blade; the method comprising:
generating with a lubrication detection device, at least one lubrication information signal indicating a degree of lubrication of the at least one blade pitch bearing by measuring an electrical capacitance of the at least one blade pitch bearing; and actuating the rotor blade pitch control device to change the pitch angle of at least one rotor blade in order to lubricate the at least one blade pitch bearing and actuating a rotor blade lubricating device to perform at least one action to lubricate the at least one blade pitch bearing when the lubrication information signal indicates that the at least one blade pitch bearing is not sufficiently lubricated.