系泊失效后漂浮式风力机平台动态响应研究

Research on the Dynamic Response of the Floating Wind Turbine Platform after Mooring Failure

深海漂浮式风力机平台稳定性是保证系统安全运行的基础,其系泊在风、浪及海流等动态载荷周期性作用下引发蠕变后会加速腐蚀,从而导致系泊失效。为了研究系泊失效后风力机所受载荷对平台动态响应的影响,参考Barge平台的NREL 5 MW风力机建立了漂浮式风力机整机模型,通过对AQWA的二次开发实现了与FAST间的实时数据交换,开展了漂浮式风力机的风波耦合数值仿真。结论表明:系泊失效后漂浮式风力机平台响应增大、风力机的结构安全性降低。其中,迎风侧系泊失效对平台影响最为明显,尤其是横荡和艏摇方向受到的影响更大,失效后的最大响应幅值分别为失效前的6.3倍和9.7倍。

The stability of the deep-sea floating wind turbine platform is the basis to ensure the safe operation of the system.The mooring will accelerate the corrosion after causing creep under the periodic action of dynamic loads such as wind,waves and ocean currents,thus leading to the mooring failure.To study the impact of the wind turbine load on the dynamic response of the platform after mooring failure,based on the complete model of the floating wind turbine is established based on the NREL 5 MW wind turbine of Barge platform.Through the secondary development of AQWA,the real-time data exchange with FAST is realized,and the numerical simulation of the floating wind turbine is carried out.The conclusion shows that the response of the floating wind turbine platform increases and the structural safety of the wind turbine decreases after the mooring fails.Among them,the failure of windward side mooring has the most obvious impact on the platform,especially the transverse and bow directions are relatively most affected,and the maximum response amplitude after the failure is 6.3 times and 9.7 times that before the failure,respectively.