超高压零值绝缘子串电场分布研究  

Research on the Electric Field Distribution of Ultra-high Voltage Zero-value Insulator Strings

作　　者：乔竹生 张东东 王东伟 QIAO Zhusheng;ZHANG Dongdong;WANG Dongwei

机构地区：[1]南京工程学院电力工程学院,南京211167

出　　处：《科技创新与应用》2025年第1期30-34,38,共6页Technology Innovation and Application

基　　金：江苏省大学生科技创新训练项目(202311276029Z)。

摘　　要：绝缘子在电力系统中承担着保持导线对地绝缘的作用,其重要性不言而喻。对于电力从业者来说,电力系统安全可靠运行是“民之所愿”,然而,当绝缘子发生零值时,会造成闪络、掉串等一系列事故的发生。该文从电场分布的维度,对超高压系统中常见的钟罩式绝缘子和双伞型绝缘子进行仿真分析。通过对不同方向的电场进行检测,得到零值绝缘子的畸变特性。通过改变检测距离,分析零值绝缘子电场检测的合理范围。进一步对有无均压环2种情况下的绝缘子电场分布进行比较,探究均压环对局部电场的影响。该成果便于电力从业者了解超高压绝缘子的电场分布并对零值绝缘子电场检测法起到推动作用。Insulators play the role of maintaining the insulation of wires from the ground in the power system,and their importance is self-evident.For power practitioners,the safe and reliable operation of the power system is"the people's wish."However,when the insulator reaches zero value,a series of accidents such as flashover and string drop will occur.In this paper,the bell jar insulators and double umbrella insulators commonly used in ultra-high voltage systems are simulated and analyzed from the dimension of electric field distribution.By detecting electric fields in different directions,the distortion characteristics of zero-value insulators are obtained.By changing the detection distance,the reasonable range of zero-value insulator electric field detection is analyzed.The electric field distribution of insulators with and without grading rings is further compared to explore the influence of grading rings on the local electric field.This achievement facilitates power practitioners to understand the electric field distribution of ultra-high voltage insulators and promotes the zero-value insulator electric field detection method.

关 键 词：零值绝缘子 电场检测 均压环 检测距离 电力系统 

分 类 号：TM216[一般工业技术—材料科学与工程]