Characteristics of Surface Micro-discharge Excited by Pulsed Voltage in Open Air  

作　　者：LI Dong BAI Chuangfei WANG Xiaohua KONG Gangyu LIU Dingxin 

机构地区：[1]State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an 710049, China

出　　处：《高电压技术》2013年第9期2273-2279,共7页High Voltage Engineering

基　　金：Project supported by Fundamental Research Fund for the Central Universities of China,State Key Laboratory of Electrical Insulation and Power Equipment(EIPE11108)

摘　　要：The surface micro-discharge(SMD)excited by pulsed voltage in open air is experimentally studied by measuring its voltage,current,emission image,emission spectrum,and ultraviolet(UV)absorption spectrum.It is found that the SMD occurs intermittently in each cycle,and that it consists of many filaments on the surface of grounded electrode.While the applied voltage’s peak value Up increases from 1.75 kV to 7.25 kV,the discharge area keeps expanding until Up≈6 kV,when the discharge occupies all the available area.The emission spectrum of nitrogen metastable N2(C-B)and the density of ozone increase almost linearly.The ozone density decreases hyperbolically downstream of the grounded electrode due to the diffusion in open air.The characteristics of pulsed SMD are presented and analyzed as well,which may be referred by further investigations.The surface micro-discharge （SMD） excited by pulsed voltage in open air is experimentally studied by measuring its voltage, current, emission image, emission spectrum, and ultraviolet （UV） absorption spectrum. It is found that the SMD occurs intermittently in each cycle, and that it consists of many filaments on the surface of grounded electrode. While the applied voltage＇s peak value Up increases fi＇om 1.75 kW to 7.25 kV, the discharge area keeps expanding until UpS6 kV, when the discharge occupies all the available area. The emis- sion spectrum of nitrogen metastable N2（C-B） and the density of ozone increase almost linearly. The ozone density decreases hyperbolically downstream of the grounded electrode due to the diffusion in open air. The characteristics of pulsed SMD are presented and analyzed as well, which may be referred by further investigations.

关 键 词：脉冲电压 放电特性 表面 激发 露天 接地电极 放电面积 臭氧浓度 

分 类 号：TN78[电子电信—电路与系统] TN141.5