35kV配电线路绝缘子串与多断点灭弧防雷间隙雷电冲击绝缘配合研究  

Lighting insulating coordination between insulator string and multiple-break arc-extinguishing lighting protection gap of 35kV transmission line

作　　者：孟伟航 王巨丰[1] 黄上师 李籽剑 Meng Weihang;Wang Jufeng;Huang Shangshi;Li Zijian(School of Electrical Engineering,Guangxi University,Nanning 530004,China)

机构地区：[1]广西大学电气工程学院,南宁530004

出　　处：《电测与仪表》2022年第5期109-115,共7页Electrical Measurement & Instrumentation

基　　金：国家自然科学基金资助项目(51467002)。

摘　　要：多断点灭弧防雷间隙能有效降低35 kV配电线路雷击跳闸率,但目前暂无对多断点灭弧防雷间隙和绝缘子的雷电冲击绝缘配合的研究。因此,对35 kV玻璃、复合绝缘子串及不同间隙距离的多断点灭弧防雷间隙进行雷电冲击特性和伏秒特性的实验研究。实验结果表明:多断点灭弧防雷间隙能够在雷击后有效保护绝缘子;有效相同间隙距离下,多断点灭弧防雷间隙的绝缘水平要高于并联间隙;通过实验给出多断点灭弧防雷间隙的有效保护距离。此结论可为安装多断点灭弧防雷间隙的工程提供参考。Multiple-break arc-extinguishing lightning protection gap can effectively reduce the lightning tripping rate of 35kV transmission lines,but there are few studies on lighting insulating coordination between insulator string and multiple-break arc-extinguishing lighting protection gap of 35 kV transmission line.Therefore,the lightning impulse characteristicsand voltage-time characteristics of a 35 kV glass insulator string,a 35 kV composite insulator string and their multiple-break arc-extinguishing lighting protection gap with different clearance distances are experimentally studied.The experi-mental results show that multiple-break arc-extinguishing lightning protection gap can effectively protect insulator afterlightning stroke;the insulation level of the multiple-break arc-extinguishing lightning protection gap is higher than that ofthe parallel gap devices at the same gap distance;the effective gap distance of multiple-break arc-extinguishing lightningprotection gap is given by experiment.This conclusion can provide reference for the engineering of installing multiple-break arc-extinguishing lightning protection gap.

关 键 词：绝缘子串 灭弧间隙 雷电冲击 伏秒特性 绝缘配合 

分 类 号：TM21[一般工业技术—材料科学与工程]