白久林, 李晨辉, 龚彦安, 王宇航. 考虑RNA运行作用的近海风电结构动力响应分析[J]. 工程力学, 2022, 39(11): 97-108. DOI: 10.6052/j.issn.1000-4750.2021.06.0453
引用本文: 白久林, 李晨辉, 龚彦安, 王宇航. 考虑RNA运行作用的近海风电结构动力响应分析[J]. 工程力学, 2022, 39(11): 97-108. DOI: 10.6052/j.issn.1000-4750.2021.06.0453
BAI Jiu-lin, LI Chen-hui, GONG Yan-an, WANG Yu-hang. DYNAMIC RESPONSE ANALYSIS OF OFFSHORE WIND TURBINE CONSIDERING ROTOR-NACELLE ASSEMBLY (RNA) OPERATION[J]. Engineering Mechanics, 2022, 39(11): 97-108. DOI: 10.6052/j.issn.1000-4750.2021.06.0453
Citation: BAI Jiu-lin, LI Chen-hui, GONG Yan-an, WANG Yu-hang. DYNAMIC RESPONSE ANALYSIS OF OFFSHORE WIND TURBINE CONSIDERING ROTOR-NACELLE ASSEMBLY (RNA) OPERATION[J]. Engineering Mechanics, 2022, 39(11): 97-108. DOI: 10.6052/j.issn.1000-4750.2021.06.0453

考虑RNA运行作用的近海风电结构动力响应分析

DYNAMIC RESPONSE ANALYSIS OF OFFSHORE WIND TURBINE CONSIDERING ROTOR-NACELLE ASSEMBLY (RNA) OPERATION

  • 摘要: 在风、浪的长期耦合作用下,海上风电结构的振动问题不仅会影响发电机组的电能输出,还会加剧结构的累积疲劳损伤,危害结构安全。为更加科学、合理地认识近海风电结构的动力特性,该文通过考虑风轮-机舱组件(rotor-nacelle assembly, RNA)运行作用及风、浪相关性,采用Von Karman风谱模型模拟湍流风场并计算气动荷载,通过莫里森方程求取单桩基础结构的波浪荷载,对NREL 5MW单桩风电塔进行动力响应分析,对比其在不同状态下的动态行为模式;通过批处理程序,开展对近海风电结构在3 m/s~30 m/s风速范围内的响应计算,探究RNA运行作用下近海风电结构位移、加速度响应随风速的变化规律。结果表明:近海风电结构在不同工作状态下的动力响应具有不同的频谱特征,其位移、加速度峰值响应会被RNA运行作用放大。

     

    Abstract: Caused by the long-term coupling effect of wind and wave, the vibration of offshore wind turbine will affect the power output of the generator unit, aggravate the cumulative fatigue damage of the structure and reduce the safety of the structure. In order to understand the dynamic characteristics of offshore wind turbine more scientifically, this paper uses von Karman wind spectrum model to simulate the turbulent wind field and calculate the aerodynamic load by considering the Rotor–Nacelle Assembly (RNA) operation and the correlation between wind and wave, and calculates the wave load at monopile foundation structure by Morrison equation. The dynamic response of NREL 5MW monopile wind turbine is analyzed, and the dynamic behavior patterns under different states are compared. Through batch processing program, the response of offshore wind turbine with the wind speed range of 3 m/s~30 m/s is calculated, and the variation laws of displacement and acceleration response of offshore wind turbine with wind speed under RNA operation are explored. The results show that the dynamic response of offshore wind turbine under different working conditions has different spectrum characteristics, and the peak response of displacement and acceleration will be amplified by RNA operation.

     

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