Control of wind turbines
AssigneeVestas Wind Systems A/S
InventorsKelvin HALES, Chris SPRUCE
Life of this patent
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Abstract
The present invention relates to a method and control system comprising at least one cable temperature sensor for measuring cable temperature values for at least one power collection cable (50, 55) connected to a wind turbine (20) and a controller (110) arranged to generate and output an overrating control signal to the wind turbine (20). The output overrating control signal sets an amount by which the power output of the wind turbine (20) is to be overrated. It is determined whether the measured cable temperature values exceed a temperature set point and modifying the overrating control signal to reduce the amount of overrating if the temperature set point is exceeded.
Claims7
A method of controlling a wind turbine, the method comprising:
- generating and outputting an overrating control signal to the wind turbine, the overrating control signal setting an amount by which the power output of the wind turbine is to be overrated;
- measuring cable temperature values for at least one power collection cable connected to the wind turbine using at least one cable temperature sensor;
- determining whether the measured cable temperature values exceed a temperature set point;
- and
- modifying the overrating control signal to reduce the amount of overrating if the measured cable temperature values exceed the temperature set point.
A method of controlling a plurality of wind turbines connected to a common node from which power generated by the plurality of turbines is exported by at least one power collection cable, the method comprising:
- generating and outputting an overrating control signal to the plurality of wind turbines, the overrating control signal setting an amount by which the power output of the plurality of wind turbines is to be overrated;
- measuring cable temperature values for the at least one power collection cable using at least one cable temperature sensor;
- determining whether the measured cable temperature values exceed a temperature set point;
- and
- modifying the overrating control signal of at least one of the wind turbines to reduce the amount of overrating if the measured cable temperature values exceed the temperature set point.
A wind turbine control system comprising:
- at least one cable temperature sensor for measuring cable temperature values for at least one power collection cable connected to the wind turbine;
- and
- a controller arranged to generate and output an overrating control signal to the wind turbine, the overrating control signal setting an amount by which the power output of the wind turbine is to be overrated, determining whether the measured cable temperature values exceed a temperature set point and modifying the overrating control signal to reduce the amount of overrating if the temperature set point is exceeded.
Dependencies are inferred from the claim text.