Posters

Abstract

LiDAR (Light Detection and Ranging) stand-alone technology has emerged as a promising alternative to traditional met masts for wind resource assessment, eliminating the need for physical infrastructure and offering several advantages over met masts. Following on from the poster PO.218 at the Wind Europe Conference 2024 in Bilbao, this study uses case studies to demonstrate the bankability of various LiDAR stand-alone measurements. Proven Concept through Case Studies The concept of LiDAR stand-alone measurements has been validated through numerous case studies across diverse terrains and wind conditions which result in bankable assessments. These case studies have consistently demonstrated the ability of LiDAR systems to accurately predict wind resource potential, comparable to met mast measurements. Even in complex terrains where LiDAR measurements may encounter limitations, bankable LiDAR stand-alone measurements have been successfully conducted with the aid of computational fluid dynamics (CFD) corrections. By following a best practice framework, involving risk assessment and management, continuous measurement supervision, the implementation of backup sensor systems, stringent post-processing procedures, and regular LiDAR device verification it can be ensured that the uncertainties obtained with LiDAR stand-alone measurements are generally comparable to the uncertainties of met mast measurements, especially for higher hub heights currently planned. LiDAR stand-alone measurements offer a distinct advantage over met masts at higher hub heights. Direct Comparison with Met Mast Measurements As verification sites are often designed and IEC compliant for power curve testing, a widespread argument is that these sites are not representative and comparable with the complexity of real measured sites. This argument can be proven wrong. A direct comparison between LiDAR and met mast measurements over an extended period has shown that LiDAR measurements remain consistent with met mast data over time. This suggests that the verification period is sufficient to assess the long-term accuracy of LiDAR measurements. Conclusion This study clearly demonstrates that bankable and reliable LiDAR stand-alone measurements have been performed which was confirmed by the evaluation of various case studies. LiDAR stand-alone measurements have proven their concept through extensive case studies and comparative analysis with met mast measurements. The uncertainties associated with LiDAR measurements are comparable to met mast measurements, and LiDAR systems offer a distinct advantage at higher hub heights. Additionally, direct comparisons between LiDAR and met mast measurements over an extended period have shown consistent results. These findings demonstrate the reliability and bankability of LiDAR stand-alone measurements, making them a viable alternative to traditional met masts for wind resource assessment. As LiDAR technology continues to advance, it is poised to play an increasingly significant role in the wind energy industry, enabling more efficient and cost-effective project development.