孤立金属放电针电晕电流特性的研究  

Study on Corona Current Characteristics of Isolated Metal Object

作　　者：朱俊儒[1] 谭涌波[2] 汤洁[1] 陈佳义 师正[2] ZHU Junru;TAN Yongbo;TANG Jie;CHEN Jiayi;SHI Zheng(Huai′an Weather Service,Huai′an 223001,China;School of Atmospheric Physics,Nanjing University of Information Science&Technology,Nanjing 210044,China;Huaiyin Meteorological Bureau,Huai′an 223300,China)

机构地区：[1]淮安市气象局,江苏淮安223001 [2]南京信息工程大学大气物理学院,江苏南京210044 [3]淮阴区气象局,江苏淮安223300

出　　处：《电工技术》2022年第15期220-223,共4页Electric Engineering

基　　金：国家自然科学基金项目(编号41805002);江苏省气象局青年基金(编号KQ201912)。

摘　　要：为定量分析强电场下孤立金属放电针电晕放电强度,首先通过实验获取圆柱型铁质金属尖端在发生电晕放电时的瞬时电晕电压值;在分辨率为1 cm情况下,利用二维有限元法将电晕电压值转换成铁质放电针尖端处的电场值;拟合建立了电晕电流与金属尖端处电场之间的函数公式。最后,根据得到的电晕电流公式与野外观测得到的负环境电场下的电晕电流作对比,发现实验室环境下的放电针电晕放电强度明显小于野外观测环境的,且电晕电流增强幅度弱于野外观测环境的。In order to quantitatively analyze the corona discharge intensity of isolated metal discharging needle under strong electric field,the instantaneous corona voltage value of cylindrical iron metal tip at the time of corona discharge is obtained through laboratory experiments.With a resolution of 1 cm,the corona voltage value is converted into the electric field value at the tip of the iron discharge needle using the two-dimensional finite element method.A fitting function formula between the corona current and the electric field at the tip of the metal tip is established.Finally,by comparing the corona current formula obtained with the corona current observed in the field,it is found that the intensity of corona discharge produced by the discharge needle in the laboratory environment is significantly lower than that in the field test environment and the intensity of corona current enhancement is weaker than that in the laboratory environment.

关 键 词：电晕放电 实验室 模拟 电晕电流 数值计算 

分 类 号：TM241[一般工业技术—材料科学与工程]