半潜式浮式风机一体化耦合分析方法对比  

Comparison of various integrated coupled analysis methods for the semi-submersible floating wind turbine

作　　者：李帅 贾玉超 张法富[1] 梁瑜[1] LI Shuai;JIA Yuchao;ZHANG Fafu;LIANG Yu(Offshore Oil Engineering Co.,Ltd.,Tianjin 300451,China;State Key Laboratory of Ocean Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]海洋石油工程股份有限公司,天津300451 [2]上海交通大学海洋工程全国重点实验室,上海200240

出　　处：《中国海上油气》2024年第6期149-158,共10页China Offshore Oil and Gas

基　　金：国家重点研发计划政府间国际科技创新合作项目“大型漂浮式风机基础平台一体化设计优化与模型试验研究(编号:2023YFE0110000)”;国家自然科学基金面上项目“变桨控制的浮式垂直轴风机耦合数值方法与虚拟混合模型试验研究(编号:42176210)”;中国海洋石油集团有限公司“十四五”重大科技项目12课题3“海上风电建造、安装、调试技术研究(编号:KJGG-2022-1203)”部分研究成果。

摘　　要：由于风机厂家通常仅提供风机的结构载荷,不提供上部风机参数,导致在进行海上风机浮式基础设计时,难以开展浮式风机的全耦合分析。从风机载荷的组分出发,建立了全耦合、限制耦合、准耦合、半耦合4种分析模型,以“海油观澜号”为例,对比了不同耦合模型在计算极限海况下浮式风机运动和系泊张力方面的差异。结果表明:限制耦合模型忽略了风机质量,其计算结果与全耦合分析结果最大相对误差超过70%,无法满足工程实施需求;准耦合模型求解的响应与全耦合模型的最大相对误差约6%,半耦合模型的最大相对误差则低于2%,均可满足工程实施要求;准耦合模型只需风机厂家提供主要的风机结构参数和固定式风机的塔底载荷信息,可用于浮式风机的概念设计和基本设计的前期阶段;半耦合模型可用于和风机厂家开展联合设计;相较于全耦合模型,准耦合模型的计算效率提高近3倍,可实现浮式基础的快速迭代优化。研究成果在“海油观澜号”浮式风电项目中得到了应用,并可为其他半潜式浮式风机的工程设计提供参考。Since wind turbine manufacturers generally only provide structural loads of wind turbines but do not disclose the superstructure parameters of wind turbines,carrying out the fully coupled analysis of floating wind turbines is quite difficult in the floating platform design of offshore wind turbines.From the viewpoint of wind turbine load components,fully-coupled,limited-coupled,quasi-coupled,and semi-coupled models are developed in this study.With“CNOOC Guanlan”as an example,a comparison study is conducted to reveal the differences of these models in calculating motions and mooring tensions of the floating wind turbine under extreme sea conditions.The results show that the maximum relative error between the results of fully-coupled model and those from the limited-coupled model which neglects the mass properties of wind turbines exceeds 70%.Thus,the limited-coupled model is not applicable for engineering applications.The maximum relative error of responses between the quasi-coupled model and the fully-coupled model is about 6%,while that between the semi-coupled model and the fully-coupled model is less than 2%.In other words,both the quasi-coupled model and the semi-coupled model meet engineering requirements.The quasi-coupled model,requiring only basic structural parameters of wind turbines and tower base loads of fixed wind turbines,is appropriate for conceptualization and preliminary design stages.The semi-coupled model can be employed during detailed design phases in collaboration with wind turbine manufacturers.Moreover,compared with the fully coupled model,the quasi-coupled model significantly improves computational efficiency by nearly three times,enabling rapid iterative optimization of floating platforms.This methodology has been implemented in the“CNOOC Guanlan”project and can be extended to the design of other semi-submersible floating wind turbines.

关 键 词：“海油观澜号” 浮式风机 风机参数 耦合分析 全耦合模型 限制耦合模型 准耦合模型 半耦合模型 

分 类 号：P751[交通运输工程—港口、海岸及近海工程] TK83[天文地球—海洋科学]