Influence of chamber structure on arc quenching in multigap system
作者机构：School of Electrical EngineeringGuangxi UniversityNanningPeople's Republic of China Meishan Power Supply Branch of State Grid Sichuan Electric Power Co.LtdSichuanPeople's Republic of China Fuzhou Power Supply Branch of State Grid Jiangxi Electric Power Co.LtdJiangxiPeople's Republic of China
出 版 物：《High Voltage》 (高电压（英文）)
年 卷 期：2020年第5卷第3期
页 面：313-318页
核心收录：
学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 08[工学]
基 金：the National Natural Science Foundation of China(51467002) the Innovation Project of Guangxi Graduate Education(YCBZ2019001)
主 题：quenching system structure
摘 要：In order to improve the arc quenching ability of the multigap system,it is important to know the principle of arc quenching and how the chamber structure affects the arc development process in the multigap *** this study,the twodimensional geometric model of the multigap system is established based on the magnetohydrodynamics theory in COMSOL multiphysics simulation *** principle of arc quenching in the multigap system is explained in detail by analysing the physical characteristics of the arc in the multigap *** simulation result shows that the arc is compressed at large scales in the semi-closed chambers of the multigap system,which results in an instantaneous temperature rise of the arc,thus,forming the self-expanding *** strong self-expanding airflow cuts off the arc channel and blocks the energy supply of the *** influence of the chamber structure on arc quenching in the multigap system is manifested in the fact that proper improvement of the width and depth of the chamber subserves arc cooling,the reduction of the deflection angle and the increment of the number of the chambers are conductive to arc extinction.
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