大气中短空气间隙流注放电过程数值仿真  

Numerical Simulation on Streamer Discharge of Short Air Gap of Atmospheric Air

作　　者：张赟[1] 曾嵘[1] 黎小林[2] 罗兵[2] 杨学昌[1] 何金良[1] 张波[1] 

机构地区：[1]电力系统及发电设备控制和仿真国家重点实验室(清华大学电机系),北京市海淀区100084 [2]中国南方电网公司电网技术研究中心,广东省广州市510620

出　　处：《中国电机工程学报》2008年第28期6-12,共7页Proceedings of the CSEE

基　　金：国家自然科学基金项目(50777035);国家“十一五”科技支撑计划项目(2006BAA02A19)~~

摘　　要：介绍了气体放电过程的流体数值模型,并将有限元(finite element,FE)和通量校正传输(flux-corrected-transport,FCT)法结合求解该模型。针对求解时间过长的问题,引入网格自适应剖分法和并行计算方法,提高了计算精度和效率。采用所提出方法仿真了棒板间隙流注放电过程,与实验结果吻合较好。基于仿真方法研究了电压大小、电极形状对放电的影响。基于气体放电现象的物理本质,从微观上研究了气体放电过程,得到了流注过程中空间电荷、电场分布等难以直接测量的微观参量。The hydrodynamic model of streamer discharge in air at atmospheric pressure is presented, and the finite element and flux-corrected-transport （FE-FCT） method is adopted to solve the model. To increase the efficiency of computing, the adaptive mesh method and parallel computing method are introduced. The streamer discharge in air between rod-Plane electrode is simulated by the numerical method. The formation and propagation of streamer is numerically observed. The results predicted by the model are in good agreement with that of experimental measurement. The influence of applied voltage and radius of rod electrode on the streamer characteristic are also investigated. The research was based upon the physical theory of gas discharge, get some characteristics of streamer which are difficult to measure directly such as the space charge, electric field distribution.

关 键 词：流注放电 流体模型 有限元-通量校正传输法 自适应剖分 并行计算 

分 类 号：TM853[电气工程—高电压与绝缘技术]