摘要
未来海上风电场的建设需要大量动态响应低且相互干扰小的漂浮式风力机,为此研究一种尺寸更小,能减少或防止相互间干扰及安装费用更低的新型张力腿平台漂浮式风力机(TLP风力机),基于辐射/绕射理论并结合有限元方法,运用水动力学软件AQWA对其在不同海况下及不同系泊系统下的动态响应进行模拟研究,得到了频域和时域的动态响应数据。结果表明:频域分析中,新型张力腿平台漂浮式风力机的运动响应主要集中在低频区域,其中横荡、垂荡及纵摇的峰值频率分别为0.1、0.35和0.19 rad/s;TLP风力机垂荡和纵摇方向上的运动响应都小于Spar风力机运动响应;横荡、垂荡及纵摇方向上,TLP风力机附加质量均远大于辐射阻尼;时域分析中,4根张紧系泊设计优于单根张紧系泊设计,能有效降低横荡和纵摇运动响应和延长系泊绳的寿命;随着海况恶劣程度的加剧,TLP风力机的动态响应也随之增大。
The construction of future offshore wind farms requires a large number of floating wind turbines with low dynamic response and low mutual interference.For this purpose,a new type of tension leg platform for floating wind turbine with smaller size,which can reduce or prevent mutual interference and lower installation cost,is studied.Based on the radiation/diffraction theory combined with the finite element method and using hydrodynamic software AQWA,the dynamic response of TPL under different sea conditions and different mooring systems is calculated,and the frequency domain and time domain dynamic response data are obtained.The results show:in frequency domain analysis,the motion response of floating wind turbine with the new type of tension leg platform is mainly concentrated in the low frequency region.The peak frequencies of sway,heave,and pitch are 0.1,0.35,and 0.19 rad/s,respectively.TLP Wind Turbine heave and pitch motion responses are smaller than Spar wind turbine movement response.In the swaying,heaving and pitching directions,the additional mass of the TLP wind turbine is much greater than the radiation damping.In the time domain analysis,mooring scheme 2 is better than scheme 1,which can effectively reduce the sway and pitch motion response and prolong the life of mooring ropes.As the severity of sea conditions intensifies,the dynamic response of TLP wind turbines also increases.
作者
黄致谦
丁勤卫
李春
HUANG Zhi-qian;DING Qin-wei;LI Chun(School of Energy and Power Engineering,University of Shanghai for Science and Technology,Shanghai,China,Post Code:200093)
出处
《热能动力工程》
CAS
CSCD
北大核心
2019年第9期156-163,共8页
Journal of Engineering for Thermal Energy and Power
基金
国家自然科学基金(51676131,51811530315,51176129)~~
关键词
漂浮式风力机
张力腿平台
系泊系统
动态响应
附加质量
辐射阻尼
floating wind turbine
tension leg platform
mooring system
dynamic response
additional mass
radiation damping
