Posters - WindEurope Annual Event 2024

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We would like to invite you to come and see the posters at our upcoming conference. The posters will showcase a diverse range of research topics, and will give delegates an opportunity to engage with the authors and learn more about their work. Whether you are a seasoned researcher or simply curious about the latest developments in your field, we believe that the posters will offer something of interest to everyone. So please join us at the conference and take advantage of this opportunity to learn and engage with your peers in the academic community. We look forward to seeing you there!



PO200: T-RIX A new criteria to classify orographic complexity for wind energy yield assessment

Martin Richter-Rose, Senior Wind & Site Assessment, PAVANA GmbH

Abstract

The assessment of orographic complexity is a central factor when determining the wind- and energy potential for proposed wind energy projects. Orographic complexity is particularly important for evaluating the suitability of flow models, as it can influence the limits of applicability of different models and methods. The criteria currently used in Technical Guideline 6, Revision 11 to assess orographic complexity is based on the method of IEC 61400-1, Ed.3, where complexity is characterized by the variations of the terrain topography from a plane, the radius of observation of which depends, among other things, on the hub height taken as a basis. However, it has been shown that this methodology does not meet the technical requirements for use in wind and yield potential assessments and, moreover, does not correspond to the subjective assessments of experts. In order to close these gaps, we present in this article a new pragmatical methodology for assessing terrain complexity, which was developed and validated within the framework of the FGW Technical Committee on Wind Potential (FGW TC WP). Additional aspects, such as variations in terrain, explicit design for wind and energy potential analysis, similarity between sites considered (e.g., location of wind measurement and location of proposed wind turbine), and consideration of terrain slope, were included. The application of this procedure allows an objective assessment of the terrain complexity and thus helps to define more precisely the limits of transferability of wind conditions using flow models.


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