深远海大兆瓦级半潜式风机基础运动特性数值模拟及试验研究  

Numerical simulation and experimental study of motion characteristics of large megawatt-class semi-submersible wind turbine foundation in deep sea

作　　者：黄检 易丛 白雪平 葛晗[2] 吕柏呈 高巍 付升雷 齐磊 HUANG Jian;YI Cong;BAI Xueping;GE Han;LYU Baicheng;GAO Wei;FU Shenglei;QI Lei(CNOOC Research Institute Ltd.,Beijing 100028,China;Ocean College of Zhejiang University,Zhoushan,Zhejiang 316021,China;CNOOC Energy Development Clean Energy Company,Tianjin 300459,China)

机构地区：[1]中海油研究总院有限责任公司,北京100028 [2]浙江大学海洋学院,浙江舟山316021 [3]中海油能源发展股份有限公司清洁能源分公司,天津300459

出　　处：《中国海上油气》2024年第5期206-217,共12页China Offshore Oil and Gas

基　　金：中海石油(中国)有限公司北京研究中心“十四五”重大科技项目“风电基础形式关键技术研究(编号:KJZX-2022-12-XNY-0200)”部分研究成果。

摘　　要：针对水深百米以上的深远海浮式风电开发需求,本文面向可搭载大兆瓦级(15 MW)风机的新型半潜式风机基础的运动特性展开研究。利用AQWA软件建立了该基础与系泊系统的数值模型,基于南海实际海况确定了风机塔筒的载荷,并开展了缩尺比为1∶64的水池模型试验,验证了数值模型计算的准确性;基于验证的数值模型分析了新型风机基础在南海恶劣海况下的运动特性及系泊张力,发现该新型风机基础的运动极值和系泊张力均满足规范要求。相同海况下,新型风机基础与经典半潜式风机基础OC4-DeepCwind(三浮筒平台)的运动性能及系泊缆张力对比结果表明:发电工况下,新型风机基础的垂荡和倾角的极值较三浮筒平台的分别下降62.8%和81.3%;停机工况下,垂荡和倾角的极值则分别下降46.1%和41.4%,充分说明该新型风机基础具有优越的运动性能;而在停机工况下1、2号缆系泊张力最大值分别下降17.4%和9.6%,大大降低了系泊系统的设计难度。研究结果为中国深远海浮式风电开发船型的选择提供了借鉴。In view of the demand for floating wind power development in the deep sea where the water depth is more than 100 meters,the motion characteristics of the new semi-submersible wind turbine foundation that can carry large megawatt-class(15 MW)wind turbines were studied.The numerical model of the foundation and mooring system was established by using AQWA software,and the load of the wind turbine tower was determined based on the actual sea condition in the South China Sea.The pool model test with a scaling ratio of 1∶64 was carried out to verify the accuracy of the numerical model calculation,and the motion characteristics and mooring tension of the new wind turbine foundation under harsh sea conditions in the South China Sea were analyzed based on the verified numerical model.It was found that both the extreme value of the motion and the mooring tension of the new wind turbine foundation satisfied the specification requirements.Under the same sea condition,the comparison results of the motion performance and mooring tension between the new wind turbine foundation and the classic semi-submersible wind turbine foundation OC4-DeepCwind(three-float platform)show that under the power generation condition,the extreme values of heave and tilt of the new wind turbine foundation are decreased by 62.8%and 81.3%compared with those of the three-float platform,respectively.Under the shutdown condition,the extreme values of heave and tilt are decreased by 46.1%and41.4%,which fully indicates that the new wind turbine foundation has superior motion performance.In addition,the maximum values of mooring tension of No.1 and No.2 cables under the shutdown condition decrease by 17.4%and 9.6%,respectively,which greatly reduces the design difficulty of the mooring system.The results of the study provide a reference for the selection of the ship type for the development of deep-sea floating wind power in China.

关 键 词：深远海风电 半潜式风机基础 数值模拟 模型试验 运动特性 系泊张力 

分 类 号：U662[交通运输工程—船舶及航道工程] P752[交通运输工程—船舶与海洋工程]