13.2 MW半潜浮式风力机性能仿真分析

Simulation Analysis of 13.2 MW Semi-Submersible Floating Wind Turbine Performance

以桑迪亚国家实验室(Sandia National Laboratories)公开的SNL-13.2 MW半潜式浮式风力机计算模型作为研究对象,采用Openfast软件对浮式风机进行“气动–水动–控制–弹性”全耦合时域仿真模拟,对风机系统在正常工况、极限工况、故障工况下的运动特性进行研究分析并与同工况下10 MW风机的运动特性比对。研究发现:SNL 13.2 MW半潜浮式风机系统在湍流风不规则波作用的正常工况下,纵荡、纵摇、垂荡的响应幅值较小且与同工况下10 MW风机的运动响应差异较小;风机系统在极端工况下,单条系泊线断裂时,能达到新的平衡,基本满足风机安全工作的规范要求。

The computational model of SNL-13.2 MW semi-submersible floating wind turbine published by Sandia National Laboratories is used as the object of study, and the fully coupled “aero-hydro- servo-elasto” time domain simulation of the floating wind turbine is carried out by Openfast software. And the motion characteristics of the wind turbine system under normal, extreme and fault conditions were studied and compared with those of a 10MW wind turbine under the same conditions. It is found that the surge, pitch, and heave of SNL 13.2 MW semi-submersible wind turbine system are minor under the normal operating conditions of turbulent wind irregular waves, and the difference be-tween the motion response of SNL 13.2 MW semi-submersible wind turbine system and that of 10 MW wind turbine under the same operating conditions is minor;the wind turbine system can achieve a new equilibrium when the mooring system of the wind turbine fails under the extreme operating conditions, which basically meets the specification requirements for normal and safe operation of the wind turbine.