以美国可再生能源实验室的OC5半潜式海上漂浮式风电机组为研究对象,对漂浮式基础和风电机组进行一体化仿真建模,分别运用时域和频域谱分析方法,对该漂浮式基础进行结构疲劳计算。对风电机组载荷产生的疲劳损伤和波浪载荷产生的疲劳损伤用多种方法进行组合,并和时域方法得到的风浪联合作用下结构的疲劳损伤进行比较研究。结果表明：损伤组合法、等效应力90 °异向叠加法和挪威船级社（DNV）规范法得出的疲劳损伤与时域计算的结果最为相近,可用于漂浮式风电机组的初步设计。
Abstract
Taking the OC5 semi-submersible offshore floating wind turbine developed by NREL as the research object, an integrated simulation model was established for both the floating foundation and the wind turbine. Time domain and frequency domain spectral analysis methods were used to perform structural fatigue calculations on the floating foundation. Various approaches were employed to combine the fatigue damage induced by wind turbine loads and wave loads, and the results were compared with the fatigue damage of the structure under combined wind-waves loading conditions obtained through time-domain method. The research results indicate that the fatigue damage estimates derived from the damage combination method, equivalent stress 90° out-of-phase superposition method, and DNV specification method show the closest agreement with the time domain calculation results, making them suitable for the preliminary design of floating wind turbines.
关键词
海上风电机组 /
疲劳损伤 /
时域分析 /
频域分析 /
一体化仿真 /
风浪组合
Key words
offshore wind turbine /
fatigue damage /
time domain analysis /
frequency domain analysis /
integrated simulation /
wind-wave combination
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参考文献
[1] 秦海岩. “十四五”,大力发展风电正当时[J]. 风能, 2021(11): 1.
QIN H Y.It is the right time to vigorously develop wind power in the “14 th Five-Year Plan”[J]. Wind energy, 2021(11): 1.
[2] HAAGENSEN P J, LARSEN J E, VÅRDAL O T. Long term effectiveness of life extension methodologies applied to offshore structures[J]. Engineering failure analysis, 2015, 58: 499-513.
[3] NEJAD A R, BACHYNSKI E E, KVITTEM M I, et al.Stochastic dynamic load effect and fatigue damage analysis of drivetrains in land-based and TLP, spar and semi-submersible floating wind turbines[J]. Marine structures, 2015, 42: 137-153.
[4] 张敏, 赵薇, 李炜, 等. 10 MW级海上风电新型浮式基础结构强度分析[J]. 太阳能学报, 2024, 45(6): 628-636.
ZHANG M, ZHAO W, LI W, et al.Strength analysis of new floating infrastructure for 10 MW offshore wind turbine[J]. Acta energiae solaris sinica, 2024, 45(6): 628-636.
[5] 方龙, 李良碧, 李荣富. 海上漂浮式风力机支撑结构疲劳寿命研究[J]. 太阳能学报, 2016, 37(12): 3184-3188.
FANG L, LI L B, LI R F.Fatigue life research of support structure for floating offshore wind turbine[J]. Acta energiae solaris sinica, 2016, 37(12): 3184-3188.
[6] MOHAMMADI S F, GALGOUL N S, STAROSSEK U, et al.An efficient time domain fatigue analysis and its comparison to spectral fatigue assessment for an offshore jacket structure[J]. Marine structures, 2016, 49: 97-115.
[7] 彭丽华. 考虑雨流计数的频域疲劳计算方法[D]. 武汉: 武汉理工大学, 2018.
PENG L H.A new freguency domain fatigue damage computational method considering rain-flow counting[D]. Wuhan: Wuhan University of Technology, 2018.
[8] KATSIKOGIANNIS G, HEGSETH J M, BACHYNSKI-POLIĆ E E. Application of a lumping method for fatigue design of monopile-based wind turbines using fully coupled and simplified models[J]. Applied ocean research, 2022, 120: 102998.
[9] LI T, YANG Q S, ZHANG X S, et al.Efficient fatigue damage estimation of offshore wind turbine foundation under wind-wave actions[J]. Journal of constructional steel research, 2024, 221: 108903.
[10] ROBERTSON A N, WENDT F, JONKMAN J M, et al.OC5 project phase Ⅱ: validation of global loads of the DeepCwind floating semisubmersible wind turbine[J]. Energy procedia, 2017, 137: 38-57.
[11] 熊志鑫. 船体结构有限元建模与分析[M]. 上海: 上海交通大学出版社, 2014.
XIONG Z X.Finite element modeling and analysis of hull structure[M]. Shanghai: Shanghai Jiao Tong University Press, 2014.
[12] IEC 61400-3-1, Wind energy generation systems-Part 3-1: design requirements for fixed offshore wind turbines[S].
[13] W IEC/TS 61400-3-2, ind energy generation systems-Part 3-2: design requirements for floating offshore wind turbines[S].
[14] MURAKAMI Y, TAKAGI T, WADA K, et al.Essential structure of S-N curve: prediction of fatigue life and fatigue limit of defective materials and nature of scatter[J]. International journal of fatigue, 2021, 146: 106138.
[15] DNVGL-RP-C103, Column-stabilised units[S].
[16] Fatigue assessment of offshore structures[S]. ABS, 2020.
[17] 甄春博, 张丽妹, 张小奇, 等. 基于雨流修正的船舶宽带疲劳强度分析[J]. 舰船科学技术, 2018, 40(15): 23-26.
ZHEN C B, ZHANG L M, ZHANG X Q, et al.Fatigue strength analysis of ship structure based on rain flow correction[J]. Ship science and technology, 2018, 40(15): 23-26.
[18] KÜHN M J. Dynamics and design optimisation of offshore wind energy conversion systems[D]. Delft: Delft University of Technology, 2001.
[19] HAN C S, MA Y L, QU X Q, et al.A practical method for combination of fatigue damage subjected to low-frequency and high-frequency Gaussian random processes[J]. Applied ocean research, 2016, 60: 47-60.
[20] GERVEN F P M V. Optimising the design of a steel substructure for offshore wind turbines in deeper waters[D]. Delft: Delft University of Technology, 2011.
[21] DNVGL-RP-C203, Fatigue design of offshore steel structures[S].
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