深海大兆瓦级浮式海上风电结构 强度分析
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1.国电电力浙江舟山海上风电开发有限公司;2.中国海洋大学

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国家自然科学基金项目(51879247),山东省自然科学基金项目(ZR2018MEE049)


Strength Analysis of Deep-sea Large-megawatt Floating Offshore Wind Power Structure
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Zhoushan Off-shore Wind Power Development Co.,Ltd.of Guodian Power Development Co.,Ltd

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    摘要:

    针对深海大兆瓦级浮式海上风电结构设计分析中的关键问题进行研究。浮式风电支撑结构采用美国国家可再生能源实验室(NREL)的OC3Spar平台为基准模型。分别选用5MW、6.7MW和8MW风机,采用比例因子设计法提出了对应浮式支撑结构设计方案。考虑风荷载与波浪荷载联合作用,进行了操作工况及极限工况下浮式支撑结构水动力分析以及强度分析,分别得到了支撑结构幅值响应算子以及结构关键节点应力响应随风机功率变化规律。提出了大兆瓦浮式风电结构应力消减方案,经过验证,改进后结构应力显著降低。

    Abstract:

    The key issues in design of deep-sea large-megawatt floating offshore wind turbine structures are focused in this paper. The floating supporting structure applies the OC3Spar platform of the National Renewable Energy Laboratory (NREL) as the benchmark model. The 5MW, 6.7MW and 8MW wind turbines are selected respectively, and the corresponding floating supporting structure design is proposed using the scale factor design method. Considering the combined wind load and wave load, the hydrodynamic analysis and strength analysis of the floating support structure under operating conditions and extreme conditions were carried out, and the amplitude response operator(RAO) of the support structure and the stress response of the critical nodes of the structure with the power of the wind turbine were obtained. An improved design for reducing the stress of the critical nodes is proposed and the results show the validation of the design.

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  • 收稿日期:2021-03-02
  • 最后修改日期:2021-03-17
  • 录用日期:2021-03-19
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