高电压技术2017，Vol.43Issue(5)：1467-1475,9.DOI:10.13336/j.1003-6520.hve.20170428011
基于紫外成像技术的瓷绝缘子串放电程度量化评估
Quantitative Assessment of Porcelain Insulator String Discharge Degree Based on UV Imaging Technology
摘要
Abstract
In order to evaluate the discharge degree of insulator string using UV imaging technology,firstly,we set up a test device with stable discharge power supply and UV imager,and we studied the effects of 4 parameters,including instrument gain,distance,angle,and wind force on the UV imaging results.Then,we carried out a series of artificial pollution tests by using porcelain insulator strings,and recorded the discharge phenomena of insulator strings in the process of rising voltage with a UV imager.Finally,we extracted three indexes from the ultraviolet detection video,and analyzed the relationship between the indexes and discharge intensity of the insulator strings.From the steady discharge test,it is found that there is an exponential relationship between the gain,the distance,and the UV detection results in a certain range,while the influence of angle and wind force on discharge is negligible.The study on the flashover test shows that there is a positive correlation between the indexes extracted from the vedios and the discharge strength of the insulator strings.According to the numerical value of these indexes,we can divide the discharge stage into three grades,including corona discharge,intermittent arc discharge,and persistent arc discharge.Moreover,we succeed in using UV imaging technology to evaluate the discharge degree of insulator string.The conclusion is of great significance to the application of UV imaging technology and the early warning of pollution flashover of insulator strings.关键词
紫外成像/仪器增益/检测距离/紫外光子数/光斑面积脉冲/放电评估/污闪预警Key words
UV imaging/instrument gain/detection distance/UV photon number/spot area pulse/discharge evaluation/pollution flashover warning引用本文复制引用
贾志东,王林军,尚晓光,贾骉,石海珍,张楠..基于紫外成像技术的瓷绝缘子串放电程度量化评估[J].高电压技术,2017,43(5):1467-1475,9.基金项目
国家自然科学基金(51477086).Project supported by National Natural Science Foundation of China(51477086). （51477086）
