摘要
平台的稳定是漂浮式风力机安全运行的基本保障。为研究风波耦合作用下阵列式平台漂浮式风电场Spar平台的动态响应,建立基于OC3-Hywind Spar Buoy平台的NREL 5 MW漂浮式风力机整机模型,采用链接系泊和固定系泊建立了3×3阵列Spar平台漂浮式风电场。基于叶素动量理论考虑叶尖损失、轮毂损失以及动态失速通过Fortran编程实现了水动力软件AQWA的二次开发,建立了漂浮式风电场平台气动-水动-固定系泊-链接系泊耦合动力学模型并实现了模型算法求解,结合辐射/绕射理论研究了风波耦合作用下漂浮式风电场Spar平台的动态响应特性,为解决系泊系统直接与Spar平台主体链接时平台产生的大幅度首摇、横摇响应问题,提出了首摇阻尼板和系泊链接点外移两种提高平台稳定性的方法,并研究了二者对漂浮式风电场平台动态响应特性的影响。结果表明:系泊系统直接将Spar平台链接建立阵列式平台漂浮式风电场的方案是不可行的,平台将产生极大的首摇、横摇响应;普通海况下,首摇阻尼板明显降低了漂浮式风电场平台的首摇、横摇响应,恶劣海况下效果不明显,系泊链接点外移在普通海况、恶劣海况两种工况下均能够明显降低漂浮式风电场平台的首摇、横摇响应;系泊链接点外移时,相对于风波入射方向,位于两侧的平台在xOy平面运动轨迹、首摇、横摇响应具有对称性的特点,位于中间的平台P1、P4、P7不存在横荡、横摇、首摇响应,位于两侧的平台存在横荡、横摇、首摇响应,横摇波动幅度,普通海况下约0.1°,恶劣海况约0.5°,首摇波动幅度,普通海况下约0.5°,恶劣海况约2°;此外,系泊链接点外移时,普通海况、恶劣海况两种工况下,风电场中几乎所有平台的垂荡、纵摇及机舱振动稳定性均得到了一定程度的提高。研究结果为漂浮式风力机平台稳定性的提高提供了理论参考。
The stability of platform is the basic guarantee for safe operation of floating wind turbine.Here,to study the dynamic response of Spar platform of floating wind farm with array platform under wind-wave coupled action,a NREL 5 MW floating wind turbine model based on OC3-Hywind Spar buoy platform was established.The floating wind farm with 3×3 array Spar platform was established by link mooring and fixed mooring.Based on the blade element momentum theory,considering blade tip loss,hub loss and dynamic stall,the Hydrodynamic software AQWA was secondarily developed with FORTRAN programming.The aerodynamic-hydraulic-link mooring-fixed mooring coupled dynamic model of the floating wind farm platform was established and solved using the model calculation method.Combined with the radiation/diffraction theory,the dynamic response characteristics of the floating wind farm Spar platform under wind-wave coupled action was studied.In order to solve the problem of large amplitude yaw and roll responses of the platform when the mooring system is directly linked with the main body of Spar platform,two methods to improve the stability of the platform were proposed,i.e.,the yaw damping plate and the outer moving of the mooring link point.The influence of the two methods on the dynamic response characteristics of the floating wind farm platform was studied.The results showed that it is not feasible for mooring system to link Spar platform directly to establish array platform floating wind farm,the platform can produce great roll and roll responses;in normal sea state,yaw damping plate obviously reduces yaw and roll responses of the floating wind farm platform,and the effect is not obvious under extreme sea conditions;outer moving of the mooring link point under both two conditions of normal sea state and extreme sea state can obviously reduce yaw and roll responses of the floating wind farm platform;when the mooring link point moves outward,the motion trajectory in xOy plane,yaw and roll responses of the platform located on both
作者
岳敏楠
王博
李春
李蜀军
YUE Minnan;WANG Bo;LI Chun;LI Shujun(School of Energy and Power Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China;Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering,Shanghai 200093,China)
出处
《振动与冲击》
EI
CSCD
北大核心
2021年第3期263-278,共16页
Journal of Vibration and Shock
基金
国家自然科学基金(51976131)
国家自然基金国际(地区)合作与交流(51811530315)
上海市“科技创新行动计划”地方院校能力建设(19060502200)。
关键词
漂浮式风力机
平台
阵列
叶素动量理论
辐射/绕射理论
动态响应
floating wind turbine
platform
array
blade element momentum(BEM)
radiation/diffraction theory
dynamic response
