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研究新型组合弹性系泊对漂浮式风力机Spar平台动态响应及系泊张力特性的影响。建立基于OC3-Hywind Spar Buoy平台的NREL5 MW漂浮式风力机整机模型,综合考虑叶片空气动力载荷、平台的水动力载荷及平台与系泊系统的耦合。首先验证水动力学模型的可靠性,然后分析组合弹性系泊对动态响应及系泊张力的影响。结果表明:组合弹性系泊会使平台纵荡增大25.5%,但系泊张力、垂荡和纵摇却会分别减小14.0%、20%和18.1%;弹性索位置对动态响应及系泊张力影响不大;随弹性索长度的增加,平台纵荡响应增加34.0%,平台垂荡和系泊张力分别减小25.0%和7.3%。
The effect of the new combined elastic mooring on the dynamic response and mooring tension characteristics of the Spar platform of a floating wind turbine is studied. Based on the OC3-Hywind Spar Buoy platform, an overall model of NREL5 MW floating wind turbine is established. The aerodynamic loads of the blades, the hydrodynamic loads of the platform and the coupling between the platform and the mooring system are comprehensively considered. First, the reliability of the hydrodynamic model is verified, and then the effect of combined elastic mooring on dynamic response and mooring tension is analyzed. The results show that the combined elastic mooring increases the longitudinal turbulence of the platform by 25.5%, but the mooring tension, heave and pitch decrease by 14.0%, 20% and 18.1% respectively; the dynamic response and mooring position With the increase of the length of the elastic cable, the response of the platform sag increased by 34.0% and the platform heave and mooring tension decreased by 25.0% and 7.3% respectively.