Wind Turbine Yaw Alignment Correction via Power-Optimized Deviation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional wind turbine yawing correction methods are inefficient due to inaccurate wind alignment angle calculations, leading to reduced generating capacity and unbalanced loads, as they rely on rough average and standard deviation thresholds for triggering corrections rather than real-time data analysis.
Innovation Solution
A method and system for real-time acquisition and analysis of wind speed, wind alignment angle, and generation power values to calculate wind alignment correction deviations, allowing for continuous correction of wind alignment angles based on local maximum power values, with the ability to stop recalculating deviations when the turbine operates at limited or rated power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional yawing correction is performed by monitoring average wind alignment angle and standard deviation thresholds, then the correction process is simple to implement, but the measurement precision and reliability of wind alignment angle are insufficient
Solution Approach 1:
The patent implements a feedback mechanism where the wind alignment angle measurement values are continuously corrected based on the calculated correction deviation. The corrected values are fed back into the system for ongoing monitoring and adjustment, ensuring continuous improvement of measurement precision without requiring complex additional hardware
Solution Approach 2:
The system performs self-correction by automatically calculating the wind alignment correction deviation using the relationship between generation power values and wind alignment angle measurement values. The system serves itself by utilizing its own operational data (power output and angle measurements) to correct its own measurement errors, eliminating the need for external intervention or complex correction systems
2Reliability
If alarm is triggered based on average wind alignment angle threshold, then the response process is simple, but real-time correction cannot be implemented and security requirements cannot be met
Solution Approach 1:
The patent enables continuous correction of wind alignment angle measurement values throughout the wind turbine's operation. Instead of periodic alarm-based corrections, the system continuously monitors and adjusts the wind alignment angle in real-time, ensuring that security requirements are met without interruption and eliminating delays associated with alarm response
Solution Approach 2:
The system continuously feedback-corrects the wind alignment angle measurement values based on real-time power output data. This continuous feedback loop ensures immediate detection and correction of alignment deviations, meeting security requirements without the time delays inherent in alarm-triggered corrections
3Productivity
If wind alignment correction is performed based on rough average and standard deviation, then the calculation process is simple, but the generating capacity is reduced due to inaccurate correction
Solution Approach 1:
The patent changes the parameters used for correction from rough average and standard deviation statistics to real-time power output values and wind alignment angle measurement values. By using actual operational parameters (power, wind speed, alignment angle) rather than statistical averages, the system achieves accurate correction that maximizes generating capacity while maintaining measurement precision
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
A method for controlling wind alignment correction of a wind turbine generator system comprises: acquiring environmental wind speed values, yawing wind alignment angle measured values, and generated power values of the wind turbine generator system in real time; dividing each acquired environmental wind speed value into multiple wind speed sections according to the magnitude of the environmental wind speed value, and extracting yawing wind alignment angle measured values and generated power values in at least one wind speed section; determining a maximum value of extracted generated power values in each wind speed section; calculating a wind alignment correction deviation of the wind turbine generator system according to a yawing wind alignment angle measured value corresponding to the maximum value of the extracted generated power values in each wind speed section; and performing correction processing on a subsequently acquired yawing wind alignment angle measured value by using the wind alignment correction deviation. The control method implements a wind alignment correction control operation on the wind turbine generator system, and also improves correction efficiency. The present disclosure further relates to a device and a system that are related to the foregoing method.