风电叶片新型防雷设计的仿真和试验研究  

Simulation and experimental researches on the new lightning protection design for wind turbine generator blade

作　　者：肖琼 何相勇 冯学斌[1] 梁鹏程[1] 胡杰桦[1] 戴龙侠[1] 姚威 韩敏 Xiao Qiong;He Xiangyong;Feng Xuebin;Liang Pengcheng;Hu Jiehua;Dai Longxia;Yao Wei;Han Min(Zhuzhou Times New Material Technology Co.,Ltd.,Zhuzhou 412007,China;Xi’an Airborne Electromagnetic Technology Co.,Ltd.,Xi’an 710077,China;Lightning and Electromagnetic Environmental Laboratory of Xi’an Airborne Electromagnetic Technology Co.,Ltd.,Xi’an 710077,China)

机构地区：[1]株洲时代新材料科技股份有限公司,湖南株洲412007 [2]西安爱邦电磁技术有限责任公司,陕西西安710077 [3]爱邦雷电与电磁环境实验室,陕西西安710077

出　　处：《可再生能源》2021年第6期784-789,共6页Renewable Energy Resources

基　　金：国家重点研发计划资助项目(2019YFB1503700)。

摘　　要：雷击是风力发电场最严重的安全威胁之一,其中叶片是最容易受雷击的部件,因此优化叶片防雷设计以降低雷击风险是解决安全威胁的重要途径。文章在风电场雷击统计数据和理论计算的基础上,以某型号风电机组叶片为研究对象,通过采用环氧树脂包裹接闪器基座,叶尖内置倒角设计、合理选择叶尖/叶身接闪器布置位置等优化方法以提升防雷效果。通过雷电数值仿真和直接雷击试验等方式对防雷设计进行验证,仿真和试验结果表明:该防雷设计可有效引接雷电并降低叶尖后部的尖端放电风险,绝缘性能优异,具有良好的防雷效果,有较大的实用价值。Lightning strike is one of the most serious safety threats in wind farms,in which the blade is the most vulnerable to lightning strike.Therefore,optimizing the lightning protection design of the blade to reduce the risk of lightning strike is an important way to solve the security threats.In this paper,based on the statistical data in wind field and the theoretical calculation of lightning strikes,a certain type of wind turbine blades was chosen as the research object,some optimized methods were adopted to enhance the lightning protection effect such as using epoxy resin to cover receptor base,the design of internal chamfer of the blade tip,and the reasonable selection of the location of the receptors of tip/body of blade.The lightning protection designs were tested and verified through numerical simulation and direct lightning experiments,and the results showed that the design can effectively trigger the lightning and reduce the risk of tip discharge at the back of the blade tip.It has the excellent insulation performance,good lightning protection effect and great practical value.

关 键 词：风电叶片 防雷设计 数值仿真 试验 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程]