电力学报2025，Vol.40Issue(2)：105-114,10.DOI:10.13357/j.dlxb.2025.012
海上风机的多叶片接闪与二次回击过电压研究
Research on Multi-blade Lightning and Secondary Return Stroke Overvoltage of Offshore Wind Turbine
摘要
Abstract
Because offshore wind turbines are vulnerable to lightning strikes,the overvoltage caused by the first lightning return stroke of a single blade of offshore wind turbines is mainly analyzed,ignoring the impact of multi-blade lightning and subsequent return strokes.In view of the serious damage of offshore wind turbines in lightning accidents,the transient potential changes caused by lightning strikes and secondary return strokes on multiple blades are studied.The transient calculation model of offshore wind turbine is built by ATP-EMTP software to calculate overvoltage distributions under two blade configurations and six lightning currents.The impact of current waveform,amplitude,and simultaneous strikes on overvoltage is analyzed.The results show that the more simultaneous strikes there are,the worsen the overvoltage on towers/cables.The shorter the wave head time is,the more the number of lightning blades is,the higher the overvoltage at the generator is.Blade-tip overvoltage depends on the shortest wavefront time and maximum amplitude,while tower-base over-voltage depends on total amplitude.The overvoltage peak generated by secondary return stroke is large and the time to reach the peak is short.The research results can grasp the overall overvoltage distribution of the wind turbine under various lightning strike conditions,and provide a theoretical reference for the lightning protection design of offshore wind turbines.关键词
海上风机/雷电过电压/多叶片/二次回击/ATP-EMTP/电场仿真Key words
offshore wind turbine/lightning stroke overvoltage/multi-blade/secondary return stroke/ATP-EMTP/electric field simulation分类
信息技术与安全科学引用本文复制引用
陈子骐,王振超,罗日成,高凯..海上风机的多叶片接闪与二次回击过电压研究[J].电力学报,2025,40(2):105-114,10.基金项目
湖南省教育厅科学研究项目(15C0031). （15C0031）
