基于Simulink的串联间隙避雷器雷击能量过负荷问题分析  

Lightning Strike Energy Overload Problem of Series Gap Arrester Based on Simulink

作　　者：蔡斌 袁康 梁茂祺 杨兰均[2] 谈重磊 李磊升 李甲煌 CAI Bin;YUAN Kang;LIANG Maoqi;YANG Lanjun;TAN Chonglei;LI Leisheng;LI Jiahuang(Guangxi Lingshan Dahuaishan New Energy Co.,Ltd.,Qinzhou 535000,China;Electrical Engineering School of Xi′an Jiaotong University,Xi′an 710049,China)

机构地区：[1]广西灵山大怀山新能源有限公司,广西钦州535000 [2]西安交通大学电气学院,西安710049

出　　处：《电瓷避雷器》2024年第3期96-104,113,共10页Insulators and Surge Arresters

摘　　要：为研究雷击时线路中EGLA能量过负荷的问题,通过Simulink软件搭建相关线路结构及雷击模型,仿真分析了线路中串联间隙避雷器承担及分配雷击能量受各因素的影响。结果表明,EGLA相比MOA在仅在低幅值雷击下能量分配不均问题相对明显,但EGLA无明显安全问题,高幅值雷击下即使EGLA间能量分配相对较为均匀,整体较高的绝对能量仍易对EGLA安全性产生威胁;雷电直击线路时避雷器承担能量及故障风险远高于雷击避雷线的情况;杆塔接地电阻减小、EGLA配置距离增加都将显著增加雷击点一侧避雷器承担能量及故障风险。进一步地,指出基于避雷器的防雷策划应当结果避雷器故障情况综合考量的问题。In order to study the problem of EGLA energy overload in transmission line during lightning strike,the related structure and lightning strike model were built by Simulink software,and the influence of various factors on the load and distribution of lightning strike energy by series gap arresters in transmission line was simulated and analyzed.The results show that compared with MOA,the problem of uneven energy distribution is relatively obvious under low-amplitude lightning strikes,but EGLA has no obvious safety problem.Even if the energy distribution between EGLAs is relatively uniform under high-amplitude lightning strikes,the overall higher absolute energy is still easy to threaten the safety of EGLA;when the lightning strikes the transmission line directly,the arrester bears energy and the risk of failure is much higher than that of the lightning protection line;the reduction of the grounding resistance of the tower and the increase of the EGLA configuration distance will significantly increase the energy and the failure risk of the arrester on the side of the lightning strike point.Furthermore,it points out that the lightning protection planning based on surge arrester should comprehensively consider the failure situation of the arrester.

关 键 词：避雷器 串联间隙 雷电 能量 

分 类 号：TM862[电气工程—高电压与绝缘技术]