【摘要】 随着风电开发逐渐走向深远海，漂浮式风力机优势更为显著，但当前国际上相对成熟的SPAR型浮式风力机吃水较深，受中国海域水深条件限制，该技术难以直接应用。为此，本文面向100 m深海域，提出一种浅吃水SPAR型基础，基于三维势流理论分析其水动力性能，在此基础上研究该浅吃水SPAR型浮式风力机在不同情况下断缆后的动力响应，在时域内分析浮式风力机单根系泊缆破断后的风力机运动响应及系泊缆张力的变化。进而分析了预张力与风力机作业状态对断缆后风力机运动状态的影响。研究结果表明该浮式风力机能适应在100 m水深海域的正常工作，但系泊缆断裂后浮式风力机将发生大幅漂移，严重影响风场内其他风力机的正常作业，并对一定范围内运行的船舶存在潜在威胁。更多还原

【Abstract】 With the wind power development gradually going to the deep water area, the floating offshore wind turbine(FOWT) shows great advantages. However, the SPAR-type FOWT, which is more mature around the world, is usually in deeper draft.Due to the limitation of water depth in the China offshore areas, this technology can hardly be directly adopted. To overcome this issue, a new-type reduced-draft SPAR-type foundation is proposed for 100-meter-depth offshore area. Based on the three dimensional potential theory, the hydrodynamic performance is analyzed. Furthermore, its dynamic performance under different scenarios of mooring fracture is studied. The motions of the wind turbine and the mooring tension are simulated in the time domain, after one mooring line of the FOWT is broken. Moreover, the influence of mooring pretension and the wind turbine operational status on the motion of FOWT is investigated. According to the results, the FOWT could work normally in the offshore areas where the water depth is 100 m, but the large drift motion is observed after the mooring line of the FOWT is fractured. This will severely influence other wind turbine in the same wind farm, and it has potential threats on the nearby ships.更多还原