漂浮式风机基础结构强度算法对比  

Algorithm comparison of floating wind turbine foundation structural strength

作　　者：赵恩明 乔晓国 胡海峰[1] 宫焕杰 王靖凯 ZHAO Enming;QIAO Xiaoguo;HU Haifeng;GONG Huanjie;WANG Jingkai(Offshore Oil Engineering Co.,Ltd.,Tianjin 300451,China)

机构地区：[1]海洋石油工程股份有限公司,天津300451

出　　处：《中国海上油气》2025年第2期279-286,共8页China Offshore Oil and Gas

摘　　要：随着全球能源需求的不断增长,深远海丰富的风能资源开发成为研究热点。然而,漂浮式风机基础结构强度分析仍广泛采用传统的频域设计波法,其中以塔底断面荷载筛选的设计波只能考虑风机和塔筒的无气动阻尼的惯性力部分,与漂浮式风机时域全耦合分析得到的塔底断面荷载存在显著差异。针对该问题,以“海油观澜号”浮式风电平台为研究对象,首先介绍了设计波法及荷载叠加法、虚拟质量法与比例系数法这3种塔底载荷加载的原理及算法,通过建立“海油观澜号”的有限元模型和水动力模型,检验3种算法的性能与适用性。结果表明:虚拟质量法得到的应力结果最低,可能导致结构设计冗余度降低;比例系数法得到的应力结果最高,会使结构设计过于保守,增加建造成本;而荷载叠加法在保证结构设计冗余度的前提下,能有效降低建造成本,其塔底弯矩与时域全耦合分析结果也较为接近。本文研究为漂浮式风电平台结构设计提供了参考,有助于优化设计方法,降低工程成本,推动深远海风电开发技术的发展。With the continuously growing global energy demand,the development of abundant wind energy resources in the deep sea has become a research hotspot.However,the strength analysis of floating wind turbine(FWT)foundation structures still widely adopts the traditional frequency-domain design wave method.Specifically,the design wave selected by the load of the tower bottom section can only consider the inertia force of the wind turbine and the tower without aerodynamic damping,which results in a significant difference from the load of the tower bottom section obtained by the time-domain full coupling analysis of FWT foundation structures.To this end,this paper took the“CNOOC Guanlan”FWT as the research object.First,the principles and algorithms of the design wave method,load superposition method,virtual mass method,and proportional coefficient method were introduced.By building a finite element model and hydrodynamic model for the“CNOOC Guanlan”floating wind turbine,the performance and applicability of these algorithms were evaluated.The results show that the virtual mass method has the lowest stress result,which may reduce structural design redundancy,while the proportional coefficient method produces the highest stress results,thus causing overly conservative structural design and increased construction cost.The load superposition method can effectively reduce construction costs while maintaining structural design redundancy,with the tower bottom bending moment being close to timedomain full coupling analysis results.This study provides references for the structural design of FWTs,helping optimize the design method,reducing the project cost,and promoting the development of deep-sea wind power technology.

关 键 词：浮式风机 塔底荷载 荷载叠加法 虚拟质量法 比例系数法 

分 类 号：TH17[机械工程—机械制造及自动化]