Wind Turbine Control Settings Using Free-Stream Wind Turbulence
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Solution Overview
Problem
Conventional methods for determining control settings of wind turbines in a wind park do not consistently lead to optimized performance, particularly regarding power output and load management, as they fail to adequately account for wake interactions between turbines.
Innovation Solution
A method that determines control settings for wind turbines based on free-stream wind turbulence, incorporating yawing offsets, blade pitch angles, and rotor speed, to optimize power output and manage load by considering free-stream wind speed, direction, and turbulence, using a wake model that predicts power production and loading.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional control settings based on free-stream wind conditions are used, then the control system is simple to operate, but the wind park performance is not optimized due to inadequate consideration of wake interactions
Solution Approach 1:
The patent implements feedback by using measured free-stream wind turbulence to dynamically adjust control settings. The system continuously monitors turbulence conditions and adjusts yawing offsets accordingly, creating a closed-loop control system that adapts to changing wake interaction conditions to optimize power output.
Solution Approach 2:
The control settings are made dynamic by adjusting yawing offsets based on varying free-stream wind turbulence conditions. Rather than using fixed conventional settings, the system continuously adapts the control parameters according to real-time turbulence measurements, enabling optimal performance across different operating conditions.
2Productivity
If larger yawing offsets are applied to deflect wakes away from downstream turbines, then power production may increase, but the control setting does not account for varying turbulence conditions leading to suboptimal performance
Solution Approach 1:
The patent applies parameter changes by adjusting the yawing offset based on the measured free-stream wind turbulence. The control setting dynamically modifies the yawing angle parameter according to turbulence intensity, allowing the system to adapt to varying atmospheric conditions and optimize wake deflection for maximum power production under each specific turbulence regime.
3Productivity
If free-stream wind turbulence is considered in control settings, then wind park performance is optimized, but the measurement and derivation of turbulence adds system complexity
Solution Approach 1:
The system uses self-service by leveraging existing wind turbine operational data and standard wind measurements to derive free-stream wind turbulence. Rather than requiring entirely new measurement infrastructure, the system utilizes available sensor data from the wind park to calculate turbulence intensity, reducing additional hardware complexity while enabling optimized control.
Data Source
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AI summary
Determining control settings for a wind turbine It is described a method of determining a control setting of at least one wind turbine (13) of a wind park (1), the method comprising: determining a free-stream wind turbulence (25) and deriving the control setting (41) based on the freestream wind turbulence (25), wherein the control setting includes a yawing offset, and wherein the yawing offset is derived to be the smaller, the higher the free-stream wind turbulence (25) is.