Method and device for controlling the clearance of a wind turbine and wind turbine
By determining unified and independent pitch control reference values in downwind wind turbine generators, and combining tilting moment and wind thrust, the blade pitch is controlled, which solves the problem of reduced tower clearance under gusts, increases the safe distance between the blades and the tower, and reduces the risk of tower sweeping.
CN118793560BActive Publication Date: 2026-06-16BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
- Filing Date
- 2023-04-13
- Publication Date
- 2026-06-16
AI Technical Summary
⚠Technical Problem
Downwind wind turbines experience reduced tower clearance during gusts, increasing the risk of blades sweeping across the tower, which is difficult to control effectively with current technology.
⚗Method used
By determining the unified pitch control reference value and the independent pitch control reference value of the wind turbine generator, and combining the tilting moment and wind thrust, the blade pitch is controlled to compensate for the thrust under gusts and prevent the blades from getting close to the tower.
🎯Benefits of technology
It effectively increases the tower clearance, reduces the risk of blades sweeping the tower, and improves the safety and stability of wind turbine generators in gusty wind environments.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN118793560B_ABST
Abstract
The present disclosure provides a wind turbine group clearance control method, device and wind turbine group. The wind turbine group clearance control method comprises: determining a unified pitch control reference value for all blades of the wind turbine group; in response to the wind turbine group being in a gust condition, determining an independent pitch control reference value for each blade based on a collective tilting moment of all blades and a preset first tilting moment reference value; and for each blade, controlling the pitch of the blade based on the unified pitch control reference value and the independent pitch control reference value of the blade. The present disclosure solves the problem that the tower clearance of a downwind wind turbine group decreases under a gust condition, and can compensate for the thrust applied to the blades by the wind in different directions from the downwind direction in the gust, thereby avoiding the decrease in tower clearance caused by the gust.
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