污秽对瓷绝缘子串电压分布的影响

Contamination Effect on Voltage Distribution on Porcelain Insulator Strings

线路运行绝缘子串电压分布不均匀极大影响绝缘子串的闪络电压,试验研究洁净绝缘子串与污秽绝缘子串的电压分布。采用红外摄像仪、紫外测试仪及球隙放电法测量分布电压得出不均匀污秽绝缘子串的电压分布的影响因素。

The uneven distribution voltage has great impact on the flashover voltage of line insulator strings. Using infrared camera, UV（ultraviolet） tester and ball-gap discharge voltage measurement doing the test, comparing the clean and dirty insulator strings of voltage distributions to find out the factors which impact non-uniform voltage distribution of dirty insulator strings.