基于电磁抑制法的架空输电线路防雷装置研究  

Research on lightning protection devices for overhead transmission lines based on electromagnetic suppression method

作　　者：伍弘 房子祎 郝茗 吴波 吴彦亨 李定培 WU Hong;FANG Ziyi;HAO Ming;WU Bo;WU Yanheng;LI Dingpei(Power Research Institute,State Grid Ningxia Electric Power Co.,Ltd.,Yinchuan Ningxia 750011,China;Shenzhen RAMS Technology Co.,Ltd.,Shenzhen Guangdong 518000,China)

机构地区：[1]国网宁夏电力有限公司电力科学研究院,宁夏银川750011 [2]深圳市瑞迈思科技有限公司,广东深圳518000

出　　处：《宁夏电力》2024年第2期60-64,74,共6页Ningxia Electric Power

基　　金：国网宁夏电力有限公司科技项目(5229DK23000N)。

摘　　要：为进一步提升架空输电线路耐雷水平,解决传统防雷装置在降低雷电流幅值方面存在的不足,采用电磁抑制法可有效降低雷电流波形陡度和入地电流峰值的新型防雷装置。对新型防雷装置结构及电气进行了设计,研究了通流线圈及装置制造工艺,最后制作了装置样机并开展模拟试验。结果表明,相较于传统防雷装置,新型防雷装置雷电流波形陡度降低幅度达54%,雷电流入地峰值降低幅度达26%,且适应于多种铁塔角钢尺寸、方向的安装,可有效降低架空输电线路遭受雷电绕击和反击概率。A new lightning protection device using electromagnetic suppression has been developed to enhance the lightning resistance of overhead transmission lines and overcome the limitations of traditional lightning protection devices in reducing the amplitude of lightning current.This method can effectively reduce both the steepness of the lightning current waveform and the peak of the earthward current.The design of the new device′s structure and electrical characteristics are investigated,including the current-carrying coil and the device′s manufacturing techniques.Finally,a prototype is made and subjected to simulation testing.The results indicate that,in comparison to traditional lightning protection devices,the novel device achieves a 54%reduction in the steepness of the lightning current waveform and a 26%reduction in the peak earthward current.Besides,it can accommodate various installation dimensions and directions for tower angle steel,significantly reducing the probability of lightning side flashes and backflashes affecting overhead transmission lines.

关 键 词：输电线路 防雷 电磁抑制法 雷电流 通流电感 

分 类 号：TM755[电气工程—电力系统及自动化]