冰面流注发展特性试验研究  

Research on Streamer Discharge Characteristics Along Ice Surface

作　　者：王黎明[1] 叶维平 梅红伟[1] 关志成[1] WANG Liming;YE Weiping;MEI Hongwei;GUAN Zhicheng(Graduate School at Shenzhen,Tsinghua University,Shenzhen 518055,China)

机构地区：[1]清华大学深圳研究生院

出　　处：《高电压技术》2018年第9期2849-2855,共7页High Voltage Engineering

基　　金：国家自然科学基金(51307094)~~

摘　　要：目前国内外关于流注在冰层表面传播特性的研究还比较少,少数学者研究了在棒板电极结构下不均匀场中冰面流注的传播特性。为此在冰箱冷冻室内利用＂三电极＂结构研究了均匀场下冰层表面流注的传播特性,利用3个光电倍增管来观测流注在表面的传播过程。分析了流注在冰层表面传播过程中2个分量的变化情况。测量了流注的传播概率,通过数据拟合得到了流注的稳定传播场强;计算了在不同外加电场条件下流注在冰层表面的传播速度;测量了流注头部发光强度的变化规律。试验结果表明,流注在冰层表面传播过程中,只有沿面分量能够达到阴极,空气分量会在传播过程中消失。流注的稳定传播场强比较低,传播速度却很快,同时流注头部的发光强度随着传播距离的增加而不断减小。At present, the streamer propagation characteristics along ice surface are rarely researched, only a few scholars have studied the streamer propagation characteristics under non uniform field. Using a three-electrode structure, we studied the propagation characteristics of ice surface streamer under the uniform field in the refrigerator. We used three photo multiplier tubes to observe the streamer propagation process along ice surface. The two components of the streamer along ice surface were analyzed in detail. Moreover, we measured the propagation probability,obtained the stability propagation field by data fitting, calculated the propagation velocity under different external electric field, and measured the luminous intensity of streamer head. The results show that, during the process of streamer propagation along ice surface,only the ‘surface＇ component can reach the cathode, ‘air＇ component will disappear on the way. The stability field for steamer propagation along ice surface is relatively low, but the speed is very fast. Luminous intensity of streamer head decreases with the increase of propagation distance.

关 键 词：三电极结构 冰面 流注放电 传播概率 传播速度 高介电常数 

分 类 号：TM752[电气工程—电力系统及自动化]