高速湍流风下漂浮式风力机系泊失效动态响应研究

以Barge平台5 MW风力机为研究对象，基于叶素动量理论、势流理论及有限元法建立平台气动−水动−系泊动力学模型，考虑风浪同向入射的最恶劣情况下的系泊失效，此时漂浮式风力机承受风浪载荷最大，系泊最易因疲劳及冲击载荷发生失效，对比分析高速湍流风与稳态风作用下不同位置系泊失效前后平台动态响应及系泊张力。结果表明，迎风浪侧系泊失效对多个自由度响应有显著影响，背风浪侧系泊失效主要影响纵荡、纵摇和艏摇响应，在高速湍流风作用下，平台瞬态响应加剧，横荡方向的漂移距离增加，纵荡波动幅值提高，迎风浪侧系泊张力最大值及平均值明显增大，且越靠近迎风浪侧系泊平均张力越大。因此，出于安全性考虑，平台系泊设计应考虑高速湍流风的影响。

Dynamic response of mooring failure for floating wind turbine under high speed turbulent wind

Taking the 5 MW wind turbine with Barge platform as the research object, the aero-hydro-mooring dynamic model of the platform was established based on the blade element momentum theory, potential flow theory and finite element method. Considering the mooring failure in the worst case of wind and wave incident in the same direction, the floating wind turbine bears the maximum wind and wave load, and the mooring was most vulnerable to fatigue and impact loads. The dynamic response and mooring tension of the platform before and after mooring failure at different positions under high-speed turbulent wind and steady wind were compared and analyzed. The results show that the failure of the mooring system on the windward side has a significant influence on the response to multiple degrees of freedom. The failure of the mooring system on the leeward side mainly affects the surge, pitch and yaw response. Under the action of high-speed turbulent wind, the transient response of the platform is intensified; the drift distance of the sway is increased; the surge amplitude is increased. The maximum and average tension of the mooring system on the windward side are significantly increased, and the closer to the windward side, the greater the average tension of the mooring system. Therefore, the influence of high-speed turbulent wind should be considered in the design of platform mooring system for safety reasons.