水中铜丝电爆炸放电通道模型及仿真  

Model and Simulation Study of Discharge Channel During Underwater Cu Wire Explosion

作　　者：周海滨[1] 韩若愚 吴佳玮[1] 邱爱慈[1] 张永民[2] 李兴文[1] 

机构地区：[1]西安交通大学电力设备电气绝缘国家重点实验室,西安710049 [2]西安交通大学电气工程学院,西安710049

出　　处：《高电压技术》2015年第9期2943-2949,共7页High Voltage Engineering

基　　金：国家高技术研究发展计划(863计划)(2013AA064502);国家重点基础研究发展计划(973计划)(2013CB228004);国家"十二五"科技支撑计划(2012BAK04B02)~~

摘　　要：为研究水中金属丝电爆炸放电过程,基于比作用量模型和无量纲相似参数模型,提出了能够准确描述水中金属丝电爆炸的物理模型。该模型考虑了金属丝汽化时对外做功和辐射、热传等能量损耗,对比作用量模型进行了改进;并在此基础上,考虑了金属蒸汽击穿前的加热过程与击穿后的等离子体放电过程。结果表明:欠阻尼振荡条件下,计算得到的放电电流和电压的峰值与实验数据的相对误差分别为5.4%和3.1%;临界阻尼时,该误差分别为11.3%和8.7%;因此该模型计算结果与实验数据相符,优于无量纲相似参数模型。In order to research the underwater electrical wire explosion （UEWE） process, based on the specific action model and the dimensionless similarity parameter model, we proposed a modified model in order to give a more clear de- scription of the UEWE. This model considered energy consumption of DPC＇s expansion, radiation, heat transfer and so on, then improved the existed specific action model. Furthermore, nonlinear circuit simulation was adopted to simulate the whole discharge process, including the heating process before breakdown and the plasma discharge process after breakdown. The results showed that, the relative errors of currents and voltage amplitudes of calculated and measured data under under-damped condition were 5.4% and 3.1%, respectively; while the relative errors of those under critical-damped condition were 11.3% and 8.7%, respectively. Hence, the results calculated by this model is consistent with the experimental results, and the model is superior to the dimensionless similarity parameter model.

关 键 词：脉冲功率技术 水中铜丝电爆炸 相变 电阻率模型 放电等离子体通道 非线性电路仿真 

分 类 号：O461[理学—电子物理学]