闫渤文, 朱恒立, 黄叙, 张浩, 王宇航, 周绪红, 杨佑发. 台风非平稳性对钢格构浮式基础海上风机动力响应影响研究[J]. 工程力学, 2022, 39(7): 237-246. DOI: 10.6052/j.issn.1000-4750.2021.09.0717
引用本文: 闫渤文, 朱恒立, 黄叙, 张浩, 王宇航, 周绪红, 杨佑发. 台风非平稳性对钢格构浮式基础海上风机动力响应影响研究[J]. 工程力学, 2022, 39(7): 237-246. DOI: 10.6052/j.issn.1000-4750.2021.09.0717
YAN Bo-wen, ZHU Heng-li, HUANG Xu, ZHANG Hao, WANG Yu-hang, ZHOU Xu-hong, YANG You-fa. STUDY ON INFLUENCES OF TYPHOON NON-STATIONARITY ON DYNAMIC RESPONSE OF OFFSHORE WIND TURBINE WITH STEEL LATTICE FLOATING FOUNDATION[J]. Engineering Mechanics, 2022, 39(7): 237-246. DOI: 10.6052/j.issn.1000-4750.2021.09.0717
Citation: YAN Bo-wen, ZHU Heng-li, HUANG Xu, ZHANG Hao, WANG Yu-hang, ZHOU Xu-hong, YANG You-fa. STUDY ON INFLUENCES OF TYPHOON NON-STATIONARITY ON DYNAMIC RESPONSE OF OFFSHORE WIND TURBINE WITH STEEL LATTICE FLOATING FOUNDATION[J]. Engineering Mechanics, 2022, 39(7): 237-246. DOI: 10.6052/j.issn.1000-4750.2021.09.0717

台风非平稳性对钢格构浮式基础海上风机动力响应影响研究

STUDY ON INFLUENCES OF TYPHOON NON-STATIONARITY ON DYNAMIC RESPONSE OF OFFSHORE WIND TURBINE WITH STEEL LATTICE FLOATING FOUNDATION

  • 摘要: 该文提出了一种用于海上风机的新型钢格构式浮式基础,研究了台风作用下新型钢格构式浮式基础的动力载荷和动力响应。根据美国可再生能源实验室的5 MW风电机组参数初步设计了一种新型的钢格构式浮式基础;采用Holland台风模型和超强台风“山竹”(1822)的实测数据,基于叶素动量理论、势流理论和Morison方程分析了台风-浪荷载联合作用下的浮式基础动力响应特性。结果表明:该文提出的钢格构式浮式基础的动力载荷和运动响应会受到台风作用的显著影响,强台风及台风过境工况下的响应显著大于稳态强风工况,并呈现出剧烈的非平稳性。浮式基础动力载荷和运动响应与环境风速变化的趋势一致,且当风向不断变化,将引起塔筒底部产生较大的扭矩,海上风机浮式基础产生较大的艏摇运动响应。证明了考虑台风作用对钢格构式浮式风机基础稳定性影响的必要性,为钢格构式浮式基础海上风机在台风作用下的安全评价提供了理论依据和分析方法。

     

    Abstract: This study proposed a new type of steel lattice floating foundation for offshore wind turbines, and investigated the motion and dynamic responses of the steel lattice floating foundation for the offshore wind turbine during the passage of typhoon winds. A new type of steel lattice floating foundation was initially designed, considering a 5 MW wind turbine proposed by National Renewable Energy Laboratory (NREL). The dynamic response characteristics of the floating foundation were analyzed by Blade Element Momentum (BEM) theory, potential flow theory and Morison equation under the coupled typhoon wind-wave loads, using Holland typhoon model and the field data of super-typhoon "Mangkhut" (1822). The results show that the dynamic responses of the steel lattice floating foundation were significantly affected by strong typhoon, which were predominantly greater than those under synoptic strong wind conditions and featured with apparent non-stationarity. The dynamic responses of the floating foundation were in a good correspondence with the trend of the non-stationary wind speed. When the wind direction constantly changed, a greater torque was resulted at the bottom of the wind turbine tower, and increased yaw motions were also observed. It proves the effects of non-stationary typhoon winds on the stability of steel lattice floating foundation are indispensable and provides a theoretic basis and analysis methodology for the safety evaluation of steel lattice floating foundation for offshore wind turbines under typhoon winds.

     

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