Waking a wind turbine from a sleep state
AssigneeVestas Wind System A/S
InventorsCarlo Alberto Ratti, Johnny Nielsen, Jens Van Schelve
Life of this patent
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Abstract
A method of transitioning a wind turbine from a sleep state is provided in which a wind speed at the wind turbine is measured, and the measured wind speed is compared to a wake-up threshold. If the wind speed exceeds the wake-up threshold, the wind turbine is transitioned to an active state. Before comparing, either the measured wind speed or the wake-up threshold is adjusted based on an outcome of at least one previous transition from the sleep state of the wind turbine.
Claims20
A method of transitioning a wind turbine from a sleep state, in the sleep state the wind turbine being disconnected from an external power grid and being powered by an internal power source, in the sleep state the wind turbine is not providing power to non-essential systems and is providing power to essential systems, the essential systems include a wind sensor at the wind turbine and sub-control system to which the wind sensor is connected, the method comprising:
- measuring a wind speed using the wind sensor at the wind turbine to obtain a measured wind speed;
- adjusting either the measured wind speed or a wake-up threshold based on an outcome of at least one previous transition from the sleep state of the wind turbine;
- comparing the measured wind speed to the wake-up threshold;
- and
- when the wind speed exceeds the wake-up threshold, transitioning the wind turbine from the sleep state to an active state, wherein, in the active state, the wind turbine:
- remains disconnected from the external power grid;
- remains powered by the internal power source;
- and
- provides power to at least some of the non-essential systems.
A non-transitory memory storing a computer program comprising instructions which, when executed by a computer, cause the computer to carry out an operation transitioning a wind turbine from a sleep state in which the wind turbine is disconnected from an external power grid, is powered by an internal power source, is not providing power to non-essential systems and is providing power to essential systems;
- wherein the essential systems include a wind speed measurement system;
- the operation, comprising:
- measuring a wind speed using the wind speed measurement system to obtain a measured wind speed;
- adjusting either the measured wind speed or a wake-up threshold based on an outcome of at least one previous transition from the sleep state of the wind turbine;
- comparing the measured wind speed to the wake-up threshold;
- and
- when the wind speed exceeds the wake-up threshold, transitioning the wind turbine from the sleep state to an active state, wherein, in the active state, the wind turbine:
- remains disconnected from the external power grid;
- remains powered by the internal power source;
- and
- provides power to at least some of the non-essential systems.
A wind turbine comprising:
- a wind speed measurement system;
- and
- a controller configured to receive a wind speed measurement from the wind speed measurement system;
- wherein the controller is configured to perform an operation transitioning the wind turbine from a sleep state in which the wind turbine is disconnected from an external power grid, is powered by an internal power source, is not providing power to non-essential systems and is providing power to essential systems;
- wherein the essential systems include the wind speed measurement system and the controller;
- the operation, comprising:
- measuring a wind speed using the wind speed measurement system to obtain a measured wind speed;
- adjusting either the measured wind speed or a wake-up threshold based on an outcome of at least one previous transition from the sleep state of the wind turbine;
- comparing the measured wind speed to the wake-up threshold;
- and
- when the wind speed exceeds the wake-up threshold, transitioning the wind turbine from the sleep state to an active state, wherein, in the active state, the wind turbine:
- remains disconnected from the external power grid;
- remains powered by the internal power source;
- and
- provides power to at least some of the non-essential systems.
Dependencies are inferred from the claim text.