水中大电流脉冲放电电弧通道发展过程分析  

Analysis on the Development Process of Arc Channel for Underwater High Current Pulsed Discharge

作　　者：刘毅[1,2] 赵勇[1] 任益佳 林福昌 李化[1,2] Liu Yi;Zhao Yong;Ren Yijia;Lin Fuchang;Li Hua(State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan,430074,China;Key Laboratory of Pulsed Power Technology Ministry of Education Huazhong University of Science and Technology,Wuhan,430074,China)

机构地区：[1]强电磁工程与新技术国家重点实验室(华中科技大学电气与电子工程学院),武汉430074 [2]华中科技大学脉冲功率技术教育部重点实验室,武汉430074

出　　处：《电工技术学报》2021年第16期3525-3534,共10页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金资助项目(51877095)。

摘　　要：针对基于Braginskii阻抗模型求解电弧通道注入能量时,与实验设置相关的放电系数求解过程复杂,且结果难以准确地反映电弧通道发展特性等问题,该文提出基于电弧通道电压、电流的水中大电流脉冲放电电弧通道发展过程分析方法。采用“活塞”模型阐述通道快速膨胀过程及激波产生机理,提出基于电弧通道电压、电流实测数据剥离电感分量计算注入通道能量的方法,借助能量平衡方程对通道发展过程进行建模分析。与基于传统Braginskii阻抗模型的求解结果对比表明,该文提出的方法可以更准确地描述电弧通道的加速膨胀特性,为深入探究电弧通道的发展机理提供依据。There are two problems in solving the arc channel injection energy with the help of the bragenskii impedance model.The first problem is that the process of solving the discharge coefficient related to the experimental setup is complicated,and the second problem is that the solution results are difficult to accurately reflect the channel development characteristics.Therefore,an analysis method of arc channel development process of underwater high current pulsed discharge based on arc channel voltage and current is proposed.The“piston”model was used to describe the rapid expansion process of the channel and the mechanism of shock wave generation.Based on the measured voltage and current of arc channel,removing the inductance component,a method to calculate the injected channel energy was proposed.The energy balance equation was used to model and analyze the channel development process.Compared with the solution results based on the Braginskii impedance model,the method proposed in this paper can more accurately describe the accelerated expansion characteristics of the arc channel,and can provide a basis for in-depth exploration of the development mechanism of the arc channel.

关 键 词：水中放电 脉冲大电流 电弧通道 能量平衡方程 阻抗模型 

分 类 号：TM85[电气工程—高电压与绝缘技术]