基于气吹灭弧模型研究工频电弧发展及抑制机理  

Study on the development of power frequency arc and suppression mechanism based on gas-blown arc-extinguishing model

作　　者：王巨丰[1] 韩力 卢辛 李籽剑 张清河 Wang Jufeng;Han Li;Lu Xin;Li Zijian;Zhang Qinghe(School of Electrical Engineering,Guangxi University,Nanning 530004,China)

机构地区：[1]广西大学电气工程学院,南宁530004

出　　处：《电测与仪表》2021年第8期104-109,共6页Electrical Measurement & Instrumentation

基　　金：国家自然科学基金资助项目(51467002);广西壮族自治区科技厅科技项目(桂科AB18126105)。

摘　　要：文中基于MHD理论,利用Comsol Mutiphysic仿真平台对110 kV输配网气吹灭弧装置所产生的高速气流与电弧耦合进行研究,发现装置气吹起始灭弧时间点控制在电弧暂态发展的早期,即雷电脉冲波峰过后至第一个工频周期的时间范围内为熄弧的最佳时机,期间电弧具有电导率处于低值状态、弧柱半径小及能量较孱弱的特点,所以设置在此阶段内吹弧能保证彻底熄灭电弧恢复绝缘。In this paper,based on MHD theory,the coupling of high-speed airflow and arc produced by 110 kV transmission and distribution network gas-blown arc-extinguishing device is studied by using Comsol Mutiphysic simulation platform.It is found that the time point control of the device gas blowing initial arc extinguishing is in the early stage of arc transient development,that is,the time range from the lightning pulse peak to the first power frequency period is the best time to extinguish the arc,during which the arc has a low conductivity state.The arc column has the characteristics of small radius and weak energy,therefore,the arc blowing can ensure that the arc can be completely extinguished and insulated.

关 键 词：输配网 雷电脉冲 MHD磁流体 气吹灭弧 雷击跳闸 

分 类 号：TM863[电气工程—高电压与绝缘技术]