| 摘要 |
Method for operating a wind turbine (1), particularly a direct drive wind turbine, the wind turbine (1) comprising
- a generator (5) comprising a stator (6) and a rotor (7), with the rotor (7) being rotatably supported relative to the stator (6) by means of at least one bearing (8), and
- a control means (14), which is adapted to control rotational speed of the rotor (7) and/or at least one rotatably supported wind turbine component coupled to the rotor (7) and/or adapted to control electric power output of the generator (5), characterised in the steps of:
- determining at least one temperature information, which indicates a temperature difference between at least two components of the bearing (8), particularly between an outer ring (10) and an inner ring (9),
- comparing the temperature information with at least one upper temperature information, which indicates an upper threshold temperature difference between the at least two components of the bearing (8),
- limiting rotational speed of the rotor (7) and/or the at least one rotatably supported wind turbine component coupled to the rotor (7) to a value unlike zero yet, below a wind turbine specific nominal rotational speed of the rotor (7) and/or below the wind turbine specific nominal rotational speed of the at least one rotatably supported wind turbine component coupled to the rotor (7) and/or limiting electric power output of the generator (5) to a value unlike zero yet, below a wind turbine specific nominal electric power output of the generator (5),
if the temperature difference between the at least two components of the bearing (8) increases above the upper threshold temperature difference. |
