气液两相介质阻挡放电的等效电路模型  

Equivalent Electrical Model in Gas-liquid Two-phase Dielectric Barrier Discharge

作　　者：侯世英[1] 曾鹏[2] 孙韬[1] 罗书豪[3] 

机构地区：[1]重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆400030 [2]国网四川省电力公司成都供电公司,成都610000 [3]国网四川省电力公司检修公司,成都610000

出　　处：《高电压技术》2014年第6期1876-1882,共7页High Voltage Engineering

基　　金：输配电装备及系统安全与新技术国家重点实验室自主研究项目(2007DA10512711204);中央高校基本科研业务费(CDJRC10150010;CDJZR 11150002);国家"111"计划(B08036)~~

摘　　要：针对目前对介质阻挡放电的电气模型研究主要集中在气相放电,对气液两相介质阻挡放电研究较少的问题,搭建了相应的实验装置,对气液两相介质阻挡放电的外加电压、放电时间等外部实验参数,与放电电流、放电功率等内部放电参数间的关系进行了研究。通过测量不同气液比下放电功率随时间的变化趋势,利用数值分析的方法对实验数据进行分析,提出了一种可反应液体参数及放电时间对放电效果影响的仿真模型,该模型以微放电为主要放电形式,其微放电电流值为时间的函数。最后,将提出的模型在MATLAB中进行仿真验证,并在气液体积比1:1、放电电压峰值24 kV时将仿真与实验结果进行了对比。研究发现:随着放电的进行,仿真放电电流值有了较大的增长,其变化趋势与实验所反应的电流变化趋势一致;同时,仿真功率值与实测值误差<2%,说明该仿真模型可以很好地模拟实际的放电发展过程。Currently, Researches on electrical models of dielectric barrier discharges（DBD） concentrate in the gas-phase discharges, and gas-liquid two-phase DBD are far less focused on. Hence, we investigated the relationship between the ‘internal＇ discharge parameters（discharge current, discharge power） and the ‘external＇ experimental parameters（applied voltage, discharge time） in the gas-liquid two-phase DBD using a homemade experimental apparatus. By measuring the variation of electric power with time under different gas liquid volume ratios, we numerically analyzed the results. Consequently we put forward a simulative model that represents the effects of liquid parameters and discharge time on the discharge. In this model, the microdischarge is the main discharge form, and the microdischarge current is a function of time. Moreover, we calculated the model in MATLAB with the ratio of gas to liquid of 1：1 and the discharge voltage amplitude of 24 kV, and then compared the simulation results with the experimental results. The simulation shows that as the discharge proceeds, the discharge current increases significantly, and this increase is in accordance with the experimental results. Meanwhile, the difference between the discharge power of the simulation and its experimental counterpart is less than 2%. Therefore, the proposed model can simulate the actual discharge development effectively.

关 键 词：介质阻挡放电 电气模型 水处理 Lissajous图 电导率 MATLAB 

分 类 号：O461[理学—电子物理学]