考虑外施磁场的半密闭灭弧腔室内冲击电弧运动过程分析  

Analysis of Impact Arc Movement in Semi-Closed Arc-Extinguishing Chamber Considering External Magnetic Field

作　　者：浦仕遵 李宏梅 刘平林 彭庆军 杨泽文 邓明海 PU Shizun;LI Hongmei;LIU Pinglin;PENG Qingjun;YANG Zewen;DENG Minghai(Dehong Power Supply Bureau of Yunnan Power Grid Co.,Ltd.,Dehong,Yunnan 678400,China;Electric Power Research Institute,Yunnan Power Grid Co.,Ltd.,Kunming 650217,China;State Key Laboratory of Power Transmission Equipment&System Security and New Technology,Chongqing University,Chongqing 400044,China)

机构地区：[1]云南电网有限责任公司德宏供电局,云南德宏678400 [2]云南电网有限责任公司电力科学研究院,昆明650217 [3]输配电装备及系统安全与新技术国家重点实验室(重庆大学),重庆400044

出　　处：《南方电网技术》2022年第9期48-55,共8页Southern Power System Technology

基　　金：国家自然科学基金资助项目(51777020)。

摘　　要：由多个半密闭灭弧腔室串联而成的多腔室结构将雷击闪络的长电弧分割成数段短电弧,且灭弧腔室产生的高速气流有着强烈的吹弧作用,可有效抑制雷电闪络电弧的燃烧。针对单个灭弧腔室性能不足的问题,建立了考虑外施磁场的灭弧腔室内冲击电弧模型,研究了腔室内冲击电弧运动特性并借助淬弧试验验证了仿真模型的正确性,在已有腔室结构基础上研究半密闭灭弧腔室内冲击电弧运动特性及外施磁场加速效应的影响因素。结果分析表明外施磁场对腔室内冲击电弧的运动有加速作用,并且磁场越强,作用效果越明显;同时在外加磁场作用下优化腔室结构参数对电弧运动速度提升起到协同作用。The multi-chamber structure formed by connecting a plurality of semi-closed arc-extinguishing chambers in series divides the long arc flashed by lightning into several short arcs,and the high-speed airflow generated by the arc-extinguishing chambers has a strong arc blowing effect,which can effectively inhibit the burning of lightning flashover arc.In this paper,in order to improve insufficent performance of single arc-extinguishing chamber,the impact arc model in the arc-extinguishing chamber considering the external magnetic field is established,the movement characteristics of the impact arc in the chamber are studied and the effectiveness of the simulation modal is proved by quenching arc experiment.Based on the existing chamber structure,the movement characteristics of impact arc in semi-closed arc-extinguishing chamber and the influencing factors of external magnetic field acceleration effect are studied.The results indicate that the external magnetic field can accelerate the movement of impact arc in the chamber,and the stronger the magnetic field is,the more obvious the effect is.At the same time,optimizing the structural parameters of the chamber under the action of external magnetic field plays a positive role in improving the arc speed.

关 键 词：外施磁场 灭弧腔室 冲击电弧 运动特性 

分 类 号：TM721[电气工程—电力系统及自动化]