多工况下漂浮式风力机张力腿平台时域响应及系泊强度分析

Time-domain and Mooring Intensity Analysis of Motion Response of Tension Leg Platform of Floating Wind Turbines under Multiple Operating Conditions

为研究漂浮式风力机张力腿平台在风、浪、海流载荷联合作用下的时域响应及系泊受力特征,建立漂浮式风力机及张力腿平台模型,采用有限元方法,对比分析无风、额定、最大及极限工况下张力腿平台运动响应及系泊受力。4种工况作用下,极限停机工况时漂浮式平台运动响应最大,最大作业工况其次,额定作业工况再次,无风作业工况最小;但在最大工况时系泊作用力最大。结果表明：运动响应主要集中在纵荡,垂荡和纵摇方向;作业工况越恶劣,漂浮式平台运动响应越大;系泊张力在最大作业工况时最大,但小于系泊断裂极限。

Based on the model of floating wind turbine and tension leg platform, the finite element meth- od was used to study the time domain response and mooring force characteristics of the wind turbine plat- form with wind force, wave and ocean current load. The motion response and mooting force of the tension leg platform were compared and analyzed under no wind, rated, maximum and extreme operating condi- tions. Under the four conditions, the motion response of the floating platform under extreme operating condition is the maximum, followed in order by those under working, rated, and no wind conditions. However, the mooring force is the largest under the maximum operating condition. It was concluded ： the motion response is mainly concentrated in the direction of swing, heave and pitching. The worse the operating condition, the greater the floating platform motion response. The mooring tension is the greatest under the maximum operating conditions, but less than the mooring fracture limit.