高梯度电阻片介电常数特性及电位分布研究  

Dielectric Constant Characteristics and Potential Distribution of High Gradient Varistor

作　　者：张宗扬 马子鑫 郭洁[1] 李朋飞 房崇豪 沈林 陈喆 ZHANG Zongyang;MA Zixin;GUO Jie;LI Pengfei;FANG Chonghao;SHEN Lin;CHEN Zhe(College of Electrical Engineering,Xi'an Jiaotong University,Xi'an 710049,China)

机构地区：[1]西安交通大学电气工程学院,西安710049

出　　处：《电瓷避雷器》2021年第6期64-69,共6页Insulators and Surge Arresters

摘　　要：避雷器的高梯度电阻片在生产过程中受多种因素影响,使其相对介电常数呈现一定分散性。本研究通过实验和仿真研究了某型号220 kV GIS避雷器高梯度电阻片相对介电常数的分散性及其在不同荷电率下的变化规律,分析了其对GIS避雷器内部电位分布的影响。研究发现,电阻片相对介电常数随荷电率变化存在很大的分散性,同时提出一种基于电阻片排布的避雷器设计优化方案。The high gradient resistor of lightning arrester is affected by many factors in the production process, so its relative dielectric constant often presents a certain dispersion. The dispersion of relative dielectric constant of high gradient resistor of a 220 kV GIS arrester and its variation law under different charging rates are studied through experiment and simulation, and its influence on the internal potential distribution of GIS arrester is analyzed. It is found that the relative dielectric constant of the resistor varies greatly with the charge rate. At the same time, a design optimization measure of the arrester is proposed.

关 键 词：GIS避雷器 高梯度电阻片 相对介电常数 荷电率 电位分布 

分 类 号：TM862[电气工程—高电压与绝缘技术]