高压设备表面放电紫外成像检测影响因素的试验研究  

The Influence Factorsof Surface Discharge Ultraviolet Imaging Detection of High Voltage Equipment

作　　者：王胜辉[1] 李伟 姜婷玥 牛雷雷 律方成[1] WANG Shenghui;LI Wei;JIANG Tingyue;NIU Leilei;Lü Fangcheng(North China Electric Power University,College of Electrical and Electronic Engineering,Beijing 102206,China;North China Electric Power University Department of Electrical Engineering,Baoding 071003,China)

机构地区：[1]华北电力大学电气与电子工程学院,北京102206 [2]华北电力大学电力工程系,河北保定071003

出　　处：《电瓷避雷器》2022年第1期197-203,共7页Insulators and Surge Arresters

摘　　要：为研究不同因素对电晕放电紫外成像检测的影响特性,以棒-板间隙模型为研究对象,利用CoroCAM504紫外成像仪采集了不同影响因素下交流放电的紫外视频信号。试验结果表明:放电光斑面积随观测距离的增加而减小,其变化曲线近似满足幂函数关系;在相同放电强度与观测距离下,光斑面积随增益的增加而增大,其变化趋势近似满足指数函数;放电光斑面积随观测角度的改变其大小无明显差异;光斑面积随温度的增加而增加,但具有明显的非线性;光斑面积随湿度的增加而减少,变化曲线近似满足幂函数关系;风速对电晕放电具有明显的削弱作用,风速为12 m/s时的光斑面积,较无风减少76.7%。光斑面积随气压的降低而明显增加,气压越高,光斑面积越小,二者近似满足幂函数变化特性。In order to study the influence of different factors on the UV imaging detection of corona discharge, the rod plate gap model is taken as the research object, and the UV video signals of AC discharge under different factors are collected by using the corocam 504 UV imager. The experimental results show that the discharge spot area decreases with the increase of the observation distance, and its curve approximately satisfies the power function relationship;under the same discharge intensity and the observation distance, the discharge spot area increases with the increase of the gain, and its trend of change satisfies the exponential function;the discharge spot area has no obvious difference with the change of the observation angle;the spot area increases with the increase of temperature, but it has obvious nonlinearity;the discharge spot area decreases with the increase of humidity, and the curve approximately satisfies the power function relationship;the wind speed has a significant weakening effect on corona discharge, and the spot area decreases 76.7% when the wind speed is 12 m/s. The area of discharge spot increases with the decrease of air pressure. The higher the air pressure is, the smaller the area of discharge spot is. Both of them meet the power function approximately.

关 键 词：电晕放电 紫外成像 影响因素 光斑面积 

分 类 号：TM855[电气工程—高电压与绝缘技术]