Abstract: 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.

Abstract: 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.

Abstract: A method for lubricating a bearing of a variable-pitch wind turbine is disclosed. The electrical capacitance and/or resistance of the bearing is measured and the state of lubrication of the bearing by is determined from the measurement. The bearing is lubricated when state of lubrication indicates that the bearing is insufficiently lubricated.

Abstract: A repository for a lubricant includes a closed hollow base body for accommodating a lubricant. The base body has an inlet for filling in a lubricant, but no gas outlet. The base body further has expanding means which expand the base body from a compressed non-filled into an expanded filled state by filling the lubricant into the base body.