Wind Turbine Typhoon Control Strategy via Yaw Adjustment
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Solution Overview
Problem
Wind turbines in offshore or coastal areas face challenges during typhoons due to the lack of effective automatic control methods that balance structural strength and power generation, leading to increased maintenance workload and uncertain resistance to typhoons.
Innovation Solution
A control method, device, and system for wind turbines that acquire current working conditions and determine a target control strategy based on preset relationships between power, yaw, and communication systems, employing strategies like active windward, controlled passive leeward, and passive leeward to optimize yaw positioning and reduce maintenance workload during typhoons.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual control schemes are used to reduce load during typhoons, then survivability is improved, but power generation is reduced and maintenance workload increases
Solution Approach 1:
The wind turbine system performs self-protection during typhoons through automatic control strategies. The control system autonomously adjusts yaw angle and blade pitch based on wind speed thresholds without requiring manual intervention, thereby maintaining survivability while enabling automatic resumption of power generation once conditions improve
Solution Approach 2:
The control system activates protective measures before typhoon conditions fully develop. When wind speed reaches predetermined thresholds (e.g., 25 m/s for active windward strategy), the system proactively adjusts yaw and pitch angles to prepare for extreme conditions, ensuring survivability while minimizing disruption to power generation
2Reliability
If manual control schemes are used to reduce load during typhoons, then survivability is improved, but maintenance workload increases
Solution Approach 1:
The system autonomously monitors wind speed, selects appropriate control strategies, and executes protective actions without human intervention. The control system automatically transitions between operational modes (active windward, controlled passive leeward, passive leeward) based on real-time conditions, eliminating the need for manual operation during typhoons
Solution Approach 2:
The control system continuously monitors wind speed feedback and automatically adjusts control strategies accordingly. When wind speed exceeds thresholds, protective measures are automatically activated; when conditions improve, the system automatically resumes normal operation, creating a closed-loop system that eliminates manual maintenance requirements
3Reliability
If structural strength of components is strengthened to resist typhoons, then typhoon resistance is improved, but investment cost increases
Solution Approach 1:
Instead of permanently strengthening structural components, the system dynamically changes operational parameters (yaw angle, pitch angle) in response to typhoon conditions. The control system adjusts the windward angle and blade pitch to optimize load distribution, achieving typhoon resistance through flexible parameter adjustment rather than rigid structural reinforcement
Solution Approach 2:
The system employs dynamic control strategies that adapt to changing typhoon conditions. The yaw system actively adjusts the windward angle in real-time, and the pitch system dynamically modifies blade angles, transforming a static structural defense into a dynamic operational response that reduces the need for costly structural strengthening
Data Source
AI summary
The present disclosure provides a control method, device and system for a wind turbine. The control method includes: acquiring current working conditions of a power system, a yaw system and a communication system of the wind turbine when a typhoon warning signal is received; determining a target control strategy corresponding to the current working conditions according to a preset corresponding relationship between control strategies and working conditions of the power system, the yaw system and the communication system, wherein the control strategies may include an active windward strategy for controlling the yaw system to face typhoon wind direction, a controlled passive leeward strategy for controlling the yaw system to face opposite to the typhoon wind direction, and a passive leeward strategy for adjusting the yaw system to face opposite to the typhoon wind direction; and controlling the wind turbine by using the target control strategy.