Posters

Abstract

General summary Lidars have been getting wider acceptance, mainly in Wind Resource Assessment or Power Performance use cases. Other cases, such as the use of nacelle mounted lidars for wind turbine control are still in research and development. However, there has not been a comprehensive review of how operational assets can benefit from the lidar technology supporting the operational aspect of a wind project. For more than two decades now, using lidars has been supported by research projects and derived publications. To reach this level of acceptance, best practices have been developed under collaboration forums, like IEC Task 52 (formerly 32) and research projects by the Offshore Wind Accelerator, which have been key as pre-standardization documents. Today we have lidars covered by 3 of the IEC standards, recently split from IEC61400-12-1 ed.1 forming the new dedicated series for wind measurements: the IEC 61400-50 series. We have, therefore, differentiated best recognised practices for ground-based remote sensing devices in 50-2, for nacelle mounted lidars in 50-3 and the upcoming 50-4 for floating lidars (still under development). From an operational perspective, there are many use cases not yet explored which would spread the use of lidars to a massive scale. In this work we want to give visibility to the applications that can support the Operational Wind Assets, so lidar technology can be incorporated in the full span of the project lifetime. Method: Comparative analysis We have reviewed the different needs and possible applications of lidars during the operation phase of the wind farms. These applications are currently either novel, in development, or still used at a minor scale. We have accompanied this study with a long-term perspective of the use of lidars. The comparative analysis includes qualitative assessment (in metrology terms, i.e. what defines a “good wind measurement”) and quantitative assessment (i.e. economic terms). Results The results are to be shown for the following use cases: * Lidar measurements supporting Production Availability calculations within Service Agreements, including HSE service limitations. This category includes a comprehensive comparison between the different alternatives * Lidar measurements supporting long term power curve testing and performance upgrade monitoring * Lidar measurements supporting dialogue with grid operations. This category includes both production forecast for grid operators and production compensation from grid operators We also will elaborate on identified barriers that still need to be overcome for lidars to become the most recognised form of wind measurement for Operational Wind Assets. Conclusions Spreading the use of lidar technology in Operational Assets will require understanding the benefit of the different use cases and being aware of the challenges related to the large-scale adoption of lidars principle wind measurement source. Learning Objectives 1. Gaining insight into the use cases for lidar measurements during the operational phase of wind assets 2. Understanding the comparison with standard wind measurements commonly used in certain use cases 3. Understanding the barriers of using lidar technology at massive scale