CONTROL OF A WIND TURBINE BASED ON OPERATIONAL TRAJECTORY VALIDATION
First Claim
1. A control system for a wind turbine, comprising:
- a main controller arranged for calculating one or more predicted operational trajectories, the one or more predicted operational trajectories include a predicted control trajectory, where a trajectory comprises a time series of at least one variable;
a safety controller arranged for receiving the one or more predicted operational trajectories and validating in accordance with at least one validation routine at least one of the predicted operational trajectories as a valid operational trajectory for a future time slot, to determine whether or not the operational trajectory is valid or invalid;
wherein the control system controls the wind turbine with the predicted control trajectory if the validation is valid, and controls the wind turbine with a safe-mode control trajectory if the validation is invalid.
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Abstract
The present invention relates tocontrol of wind turbines based on predicted operational trajectories. A control system for a wind turbineis described wherea main controller calculating one or more predicted operational trajectories and a safety controller validates at least one of the one or more predicted operational trajectories. The control system controls the wind turbine with the predicted control trajectory if the validation is valid, and controls the wind turbine with a safe-mode control trajectory if the validation is invalid. In an embodiment, the main controller is implemented as a receding horizon controller, e.g. in the form of a model predictive controller (MPC).
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Citations
20 Claims
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1. A control system for a wind turbine, comprising:
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a main controller arranged for calculating one or more predicted operational trajectories, the one or more predicted operational trajectories include a predicted control trajectory, where a trajectory comprises a time series of at least one variable; a safety controller arranged for receiving the one or more predicted operational trajectories and validating in accordance with at least one validation routine at least one of the predicted operational trajectories as a valid operational trajectory for a future time slot, to determine whether or not the operational trajectory is valid or invalid; wherein the control system controls the wind turbine with the predicted control trajectory if the validation is valid, and controls the wind turbine with a safe-mode control trajectory if the validation is invalid. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A wind turbine park controller arranged for controlling one or more wind turbines of a wind turbine park, the wind turbine park controller comprising:
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a main controller arranged for calculating one or more predicted operational trajectories of a selected wind turbine of the one or more wind turbines, the one or more predicted operational trajectories comprise a predicted control trajectory, a trajectory comprises a time series of at least one variable; a safety controller arranged for receiving the one or more predicted operational trajectories of the selected wind turbine and validating in accordance with at least one validation routine at least one of the one or more predicted operational trajectories as a valid operational trajectory for a future time slot, to determine whether or not the operational trajectory is valid or invalid; wherein the control system controls the selected wind turbine with the predicted control trajectory if the validation is valid, and controls the wind turbine with a safe-mode control trajectory if the validation is invalid.
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20. Method of operating a wind turbine, the method comprising:
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calculating in a normal operational domain one or more predicted operational trajectories, the one or more predicted operational trajectories comprise a predicted control trajectory, a trajectory comprises a time series of at least one variable; receiving in a safety related domain the one or more predicted operational trajectories and validating in accordance with at least one validation routine at least one of the one or more predicted operational trajectories as a valid operational trajectory for a future time slot, to determine whether or not the operational trajectory is valid or invalid; controlling the wind turbine with the predicted control trajectory if the validation is valid, and control the wind turbine with a safe-mode control trajectory if the validation is invalid.
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Specification