新型混合系泊对漂浮式阵列风电场动态响应影响

Effect of Novel Hybrid Moorings on Dynamic Response of Floating Array Wind Farms

随着漂浮式风力机向深远海发展,其系泊系统及锚点成本不断上升,共享系泊逐渐成为研究热点。为提高共享系泊漂浮式风电场平台的稳定性,基于5 MW Barge平台风力机组建的2×2阵列式风电场,提出一种带有浮子与配重的新型混合共享系泊系统。利用辐射/绕射理论及有限元方法,计算并对比常规系泊与混合系泊在平台动态响应、系泊张力及躺地段长度的差异,分析了混合系泊浮子与配重间距对风电场平台稳定性的影响。结果表明:混合系泊平台纵荡与横荡动态响应幅值较常规系泊降低了40%以上,减小了系泊张力变化,并延长躺地段长度;随浮子与配重间距的增大,躺地段长度总体呈增大趋势,且改变了平台横荡的平衡位置。

With the deep sea development of floating wind turbines,the cost of mooring systems and an-chor points for floating wind turbines is continually rising,and shared moorings are gradually becoming a research top spot.In order to improve the stability of the floating wind farm platform with shared moor-ings,a novel hybrid shared mooring system with buoys and counterweights was proposed based on a 2×2 array wind farm formed by 5 MW Barge platform wind turbines.Based on the radiation/diffraction theory and the finite element method,the differences between the conventional mooring and the hybrid mooring in terms of platform dynamic response,mooring tension and laid length were calculated and compared,and the influence of the distance between the buoys and counterweights of the hybrid mooring on the sta-bility of the wind farm platform was analyzed.The results show that compared with the conventional moor-ing,the hybrid mooring can reduce the amplitude of the surge and sway dynamic response of the platform by about 40%,reduce the change of mooring tension,and extend the laid length.With the increase of the distance between the buoys and counterweights,the laid length tends to increase and the equilibrium position of sway is also changed.