Seismic control of next generation large offshore wind turbines considering SSI effect
YU Jie1,QIN Zhihao1,YANG Yang1,2,DAI Kaoshan2
1.Faculty of Maritime and Transportation,Ningbo University,Ningbo 315211,China;
2.Sichuan Provincial Key Lab of Failure Mechanics and Engineering Disaster Prevention,Sichuan University,Chengdu 610065,China
摘要为研究地震载荷对海上风力机结构动力响应，本文以IEA 15 MW单桩风力机为研究对象，基于开源软件FAST二次开发，考虑土-构耦合效应，通过模态加速度法和调谐质量阻尼器（Tuned Mass Damper，TMD）编写了海上风力机地震动力学仿真及结构控制程序，研究了三种不同载荷场景下风力机结构动力响应变化以及TMD对塔架振动效果的影响。结果表明，地震载荷为风力机塔架振动的主要因素，风载荷与波浪载荷对地震后塔顶纵向位移影响较大；TMD能有效降低塔顶振动，可降低峰值40%以上，对地震后塔基面内弯矩降载明显，标准差可降低70%。
Abstract：In order to investigate the earthquake loading effects on the dynamic responses of an offshore wind turbine, this study has developed a seismic analysis and structural control architecture using the modal acceleration method and Tuned Mass Damper（TMD）by extending capabilities within the open source tool namely FAST. The IEA 15 MW monopile wind turbine is used for the case study, considering the soil-structure interaction effects. The dynamic responses of the wind turbine and the influence of TMD on the vibration effect of tower under three different load scenarios are studied. The results show that earthquake load is the dominant contributor to the tower vibration, wind and wave loadings have a significant influence on the fore-aft displacement at the tower top after the earthquake occurrence. The TMD can effectively reduce the tower top vibration and the peak magnitude decreases by over 40%. The in-plane bending moment at the tower-base following the earthquake occurrence has a considerable reduction due to the presence of TMD. More specifically, the standard deviation is reduced by 70%.
[1] 刘吉臻，马利飞，王庆华，等. 海上风电支撑我国能源转型发展的思考[J]. 中国工程科学，2021，23(01)：149-159.
LIU Jizhen, MA Lifei, WANG Qinghua, et al. Offshore wind power supports china’s energy transition[J]. Strategic Study of CAE, 2021, 23(01): 149-159.
[2] 杨阳，李春，袁全勇. 大型风力机地震动力响应研究[J]. 热能动力工程，2017，32(05)：105-110+140-141.
YANG Yang, LI Chun, YUAN Quanyong. Research on dynamic response of large-scale wind turbine on seismic condition[J]. Journal of Engineering for Thermal Energy and Power, 2017, 32(05): 105-110+140-141.
[3] Yangtian Yan, Yang Yang, Musa Bashir, et al. Dynamic analysis of 10 MW offshore wind turbines with different support structures subjected to earthquake loadings[J]. Renewable Energy, 2022.
[4] Chen Yiming, Jin Xin, Liu Hao, et al. Large scale wind turbine TMD optimization based on Blade-Nacelle-Tower-Foundation Coupled Model[J]. Ocean Engineering, 2021, 239.
[5] 牛凯伦，闫阳天，李春，等. 基于混沌理论的地震诱导近海风力机动力响应研究[J]. 动力工程学报，2022，42(02)：156-163.
Niu Kailun, Yan Yangtian, Li Chun, et al. Dynamic response of offshore wind turbine induced by earthquake based on chaos theory[J]. Journal of Chinese Society of Power Engineering, 2022, 42(02): 156-163.
[6] 李志昊，岳敏楠，李春，等. 基于三维地震作用下桩-土耦合效应近海超大型风力机动力学响应研究[J]. 振动与冲击，2021，40(21)：242-250.
Li Zhihao, YUE Minnan, Li Chun, et al. Dynamic response of offshore super-large scale wind turbine based on pile-soil coupled effect under 3-D earthquake. Journal of Vibration and Shock, 2021, 40(21): 242-250.
[7] 薛世成，岳敏楠，闫阳天，等. 基于精确桩土模型的桁架式大型海上风力机地震动力学响应分析[J]. 热能动力工程，2021，36(06)：143-151.
XUE Shicheng, YUE Minnan, YAN Yangtian, et al. Seismic dynamic response analysis of a jacket offshore wind turbine based on an accurate soil-pile model[J]. Journal of Engineering for Thermal Energy and Power, 2021, 36(06): 143-151
[8] 梅轩，杨阳. 土-构耦合效应对15 MW风力机地震动态响应的影响[J]. 动力工程学报，2022，42(03)：269-275+285.
MEI Xuan, YANG Yang. Effect of soil-structure interaction on seismic behaviors of 15 MW wind turbine[J]. Journal of Chinese Society of Power Engineering, 2022, 42(03): 269-275+285.
[9] 梅轩，杨阳. 地震载荷对15MW海上风力机动态响应的影响[J]. 动力工程学报，2022，42(02)：150-155+196.
MEI Xuan, YANG Yang. Effects of earthquake excitation on dynamic responses of a 15 MW offshore wind turbine[J]. Journal of Chinese Society of Power Engineering, 2022, 42(02): 150-155+196.
[10] Gaertner E. Definition of the IEA wind 15-megawatt offshore reference wind turbine Tech. Rep[R]. NREL/TP-5000-75698 National Renewable Energy Laboratory Golden, CO, 2020.
[11] Arya S C. Design of structures and foundations for vibrating machines/Suresh c. arya, Michael w. o’neill, George pincus[M]. 1979.
