为研究驳船式风-浪集成能源系统在不同风浪联合作用时的动态响应,以NREL 5 MW风力机、ITI Energy Barge平台及数个摆式波能装置组成的集成能源系统（IFES）为研究对象,并基于开源软件OpenFAST和水动力分析软件AQWA构建气动-水动-伺服-弹性一体化仿真模型（CATIFES）,以期通过CATIFES计算常规运行工况时集成系统的平台运动响应及输出功率,定性并定量分析波能装置安装对集成系统运动特性及发电性能的影响。结果表明：所有运行工况下,集成系统的平台横摇及纵摇响应均显著小于单个驳船式平台。其中,当风速为12 m/s时,横摇及纵摇分别降低67.45%与47.02%。此外,集成系统整体发电功率在安装波能装置后有所提升,额定风速时可达到1.89%。且波能装置的安装对塔基弯矩及系泊张力未产生不利影响。为此,波能装置的合理安装可在平衡水动力载荷,提升集成系统运动稳定性的同时,增加整体输出功率,从而提高海洋能源利用效率。
Abstract
In order to investigate the dynamic responses of the IFES model under different wind-wave combined loads, the NREL 5 MW wind turbine, the ITI Energy barge-type platform and several Wavestar prototype WECs are employed for the case study. A coupled analysis tool is developed to examine the aero-hydro-servo-elastic coupled dynamic behavior of the hybrid system under wind and wave loadings. The platform motions and power characteristics of the IFES model are obtained and compared to that of the FOWT. The results indicated that the time-varying platform motions of the examined IFES models are significantly mitigated by the integration of WECs under all examined conditions. The platform roll and pitch is respectively decreased by 67.45% and 47.02% at wind speed of 12 m/s. Additionally, the output power of the IFES model is also increased by 1.89% under the rated wind speed of the wind turbine. The tower-base bending moment in rolling and pitching are also not negatively influenced to increase as well as fairlead tension of each mooring line. The obtained results have confirmed that the combination of WECs is not just beneficial in improving platform motion stability of the hybrid system, but also positively enhancing the renewable energy utilization efficiency.
关键词
海上风力机 /
海上风电 /
波浪能 /
集成系统 /
动力学响应 /
全耦合效应
Key words
offshore wind turbines /
offshore wind energy /
wave energy /
integrated system /
dynamic response /
coupling effect
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基金
国家重点研发计划（2021YFB1507100）; 国家自然科学基金（52101317）; 中国长江三峡集团有限公司科研项目（202303059）; 高等学校学科创新引智计划（111计划）“跨海大桥安全保障与智能运行学科创新引智基地（D21013）”资助
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