Smart Inspection of Wind Turbines: Application of Phoenix H25 Hydrogen-Powered UAV in Blade Inspection at an Inner Mongolia Wind Farm
— Winter Special Inspection at a 300MW Wind Farm in Ulanqab
Smart Inspection of Wind Turbines: Application of Phoenix H25 Hydrogen-Powered UAV in Blade Inspection at an Inner Mongolia Wind Farm
— Winter Special Inspection at a 300MW Wind Farm in Ulanqab
In December 2023, a 300MW wind farm in Ulanqab, Inner Mongolia, encountered extreme low temperatures and strong winds, causing 23 3.6MW wind turbines to trigger "blade vibration abnormal" alarms. Traditional manual inspection methods were not only time-consuming (4-6 hours per unit inspection) but also posed risks of high-altitude operations and visual blind spots.
To address this challenge, the maintenance team adopted the Phoenix H25 hydrogen-powered UAV, equipped with a dual-light pod (visible light + infrared) and lidar, to implement an efficient and precise inspection plan. First, the UAV quickly scanned all 42 units at a cruising speed of 18 m/s, completing macroscopic appearance detection of a single turbine in just 18 minutes and initially locating 12 abnormal units with icing or cracks.
Subsequently, the team conducted detailed re-inspections of the abnormal units, identifying 9 internal structure debonding defects through infrared thermal imaging, while using lidar to generate 3D models for precise crack size measurement. Finally, for the 3 high-risk units, the UAV performed continuous 72-hour vibration frequency monitoring, with real-time data transmission providing a reliable basis for maintenance decisions.
This case fully demonstrates the stability and efficiency of hydrogen-powered UAVs in extreme environments, significantly enhancing the safety and efficiency of wind power inspections and providing a replicable intelligent solution for the industry. The Phoenix H25’s Level 7 wind resistance rating (corresponding to 20.8-24.4 m/s wind speed) ensures stable flight in complex airflows after typhoons, and with a 90-minute endurance, a single flight can complete around-the-clock inspection of 5 units.
Maintenance personnel completed high-altitude repair work within 48 hours based on the 3D coordinate positioning provided by the UAV, successfully avoiding potential blade fracture accidents. According to calculations, this action reduced direct economic losses, equivalent to recovering the full field’s 3 days of power generation.
This practical application verifies the unique value of UAVs in offshore wind power maintenance.
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