Design Load Cases Required for Offshore Wind Turbines in Hurricane-Prone Regions

摘要

This paper discusses the design load cases that are critical for offshore wind turbines installed in hurricane-prone regions onrnthe US Outer Continental Shelf (OCS). Results of a literature review on the research on the design load case for hurricanernconditions are first presented in the paper, followed by the models and results of the case studies using the conceptual designsrnof a monopile, a tripod and a jacket type support. The characteristic structural responses of offshore wind turbines underrnhurricane conditions are evaluated with the consideration of the dynamic interaction among the turbine rotor-nacellernassembly, support structure and foundation. The correlations between those responses and various design parametersrnincluding the turbine operating mode, design environmental condition, site location and support structure configuration are ofrnparticular interest. Based on the literature review and the case study results, recommendations are made for the hurricanerndesign load cases.