高氧浓度下大气压Ar/O_2脉冲介质阻挡放电频率特性数值研究  

A Numerical Study on the Frequency Effects of the Electrical Characteristics of the Pulsed Dielectric Barrier Discharge in Ar/O_2 with High Oxygen Concentration at Atmospheric Pressure

作　　者：潘光胜 谭震宇[1,2] 王晓龙 潘杰[1,2] 黄强 Pan Guangsheng;Tan Zhenyu;Wang Xiaolong;Pan Jie;Huang Qiang(School of Electrical Engineering Shandong University Jinan 250061 China;Shandong Provincial Key Laboratory of UHV Transmission Technology and Equipment Jinan 250061 China)

机构地区：[1]山东大学电气工程学院,济南250061 [2]山东省特高压输变电技术与装备重点实验室,济南250061

出　　处：《电工技术学报》2017年第20期71-81,共11页Transactions of China Electrotechnical Society

基　　金：山东大学基本科研业务费专项资金资助项目(2016JC016)

摘　　要：使用一维流体模型,研究了高氧浓度(1.0%~5.0%)下大气压Ar/O_2脉冲介质阻挡放电的频率(<100k Hz)效应。在所考虑的氧浓度和频率范围内,计算了放电电流密度以及四种(O、O(~1D)、O^2(~1Δg)、O_3)活性氧粒子产生与消耗的主要路径及其贡献随频率的变化。结果表明,一个电压脉冲周期中均发生两次极性相反的放电,并分别发生在外施电压脉冲的上升沿和下降沿。不同氧浓度下,第一次放电与第二次放电的放电电流密度峰值均随着频率的增加先减小后增大,即存在最小值,相应的频率定义为特征频率,并获得了二特征频率随氧浓度的变化。另外,在氧浓度为3.0%时,给出了四种活性氧粒子产生与消耗的主要路径及其在不同频率下相应的贡献。By means of a1-D fluid model,the effects of frequency on the atmospheric-pressure Ar/O2pulsed dielectric barrier discharge(DBD)under high oxygen concentrations(1%～5.0%)were investigated.Under the considered frequency range below100kHz and oxygen concentrations,the frequency dependences of the discharge current densities were calculated and analyzed.The results show that there are two bipolar discharges,one occurs at the rising edge of Va and the other at the falling edge of Va.Under different oxygen concentrations,the peak values of the two bipolar discharges first reduce and then increase with the increase of frequency,that is,there is a minimum value,where the corresponding frequency of each discharge can be defined as the characteristic frequency.The oxygen concentration dependences of the two characteristic frequencies corresponding to the two bipolar discharges,respectively,are obtained.In addition,when the oxygen concentration is3.0%,the dominated reaction pathways for the production and consumption of four reactive species(O,O(1D),O2(1Δg)and O3)and their contributions at different frequencies are also given.

关 键 词：脉冲介质阻挡放电 氩氧气体 频率效应 一维流体模型 

分 类 号：TM89[电气工程—高电压与绝缘技术] TM213[一般工业技术—材料科学与工程]