基于多失效模式的海上浮式风电机组结构可靠性研究  

MULTI-MODE RELIABILITY ANALYSIS ON STRUCTURAL OF OFFSHORE FLOATING WIND TURBINE

作　　者：石嫄嫄 和庆冬 吴衍剑 杜君峰[1] 张敏[1] Shi Yuanyuan;He Qingdong;Wu Yanjian;Du Junfeng;Zhang Min(Ocean University of China,Shandong Provincial Key Lab of Ocean Engineering,Qingdao 266100,China;State Power Investment Group Jiangsu Offshore Wind Power Co.,Ltd.,Yancheng 224000,China;Power China Fujian Electric Power Engineering Co.,Ltd.,Fuzhou 350003,China)

机构地区：[1]中国海洋大学山东省海洋工程重点实验室,青岛266100 [2]国家电投集团江苏海上风力发电有限公司,盐城224000 [3]中国电建集团福建省电力勘测设计院有限公司,福州350003

出　　处：《太阳能学报》2022年第9期236-241,共6页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(51879247);山东省自然科学基金(ZR2018MEE049)。

摘　　要：为准确评估浮式海上风电机组结构服役安全性,提出一种基于多失效模式的可靠性评估方法。以美国国家可再生能源实验室(NREL)研制的5 MW浮式风力发电机组OC3 Hywind为目标模型,根据不同海况下浮式风电机组结构耦合动力响应分析结果,分析关键结构的不同失效模式,最后基于多失效模式的可靠性评估方法计算整体系统可靠性。结果表明,考虑串联系统,基于多失效模式可靠性分析方法得到的海上浮式风电机组结构整体的失效概率远高于单一模式失效概率,采用此方式评估结构可靠度更加安全准确。To ensure the safety of offshore floating wind turbine system,a novel the liability assessment method based on comprehensive multi-failure modes is proposed in this paper. The OC3 floating spar(Hywind)with 5 MW baseline wind turbine developed by American National Renewable Energy Laboratory(NREL)is applied as the target model. The coupled dynamic responses of OC3-Hywind are simulated under various sea states. And the reliabilities of several critical members under both ultimate strength failure and fatigue failure modes are calculated respectively. Then,the multi-mode reliability assessment is applied to calculate the structural reliability. The results demonstrate that the failure probability of the offshore floating wind turbine by the multi-mode reliability assessment is greater than that of any single mode. It is more efficient and accurate to estimate the structural reliability by this method.

关 键 词：海上风电 风电机组 可靠性分析 失效模式 疲劳损伤 极限强度 

分 类 号：TK513.5[动力工程及工程热物理—热能工程]