Analysis on Influencing Factors of Surface Electrical Field of Composite Insulator

ZHANG Yingli; WANG Feng; LI Meng; CHENG Yu

doi:10.13296/j.1001-1609.hva.2014.10.030

您当前的位置：

首页 >

文章列表页 >

Analysis on Influencing Factors of Surface Electrical Field of Composite Insulator

更新时间：2025-04-26

- Analysis on Influencing Factors of Surface Electrical Field of Composite Insulator
- High VoltageApparatus Vol. 50, Issue 10, Pages: 31-36(2014)
- 作者机构：
  
  1. 湖南大学电气与信息工程学院
  2. 河南省电力公司驻马店供电公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2014.10.030
  CLC： TM216
- Published：2014
- 稿件说明：
移动端阅览
[1]张盈利,汪沨,李锰,程宇.复合绝缘子沿面电场影响因素分析[J].高压电器,2014,50(10):31-36.

ZHANG Yingli, WANG Feng, LI Meng, et al. Analysis on Influencing Factors of Surface Electrical Field of Composite Insulator[J]. High voltageapparatus, 2014, 50(10): 31-36.
[1]张盈利,汪沨,李锰,程宇.复合绝缘子沿面电场影响因素分析[J].高压电器,2014,50(10):31-36. DOI： 10.13296/j.1001-1609.hva.2014.10.030.

ZHANG Yingli, WANG Feng, LI Meng, et al. Analysis on Influencing Factors of Surface Electrical Field of Composite Insulator[J]. High voltageapparatus, 2014, 50(10): 31-36. DOI： 10.13296/j.1001-1609.hva.2014.10.030.

摘要

研究不同状态下的绝缘子表面电场特征对提高绝缘子可靠性具有重要意义。笔者以220 kV交流复合绝缘子为例

借助于COMSOL有限元软件

对电场分布进行了计算分析

研究了均压环、表面污秽及内部缺陷对绝缘子沿面电场分布的影响。计算结果表明:加装均压环可以大大降低沿面最大电场强度

有效改善表面电场不均匀程度;污秽条件下

伞群和护套交接处电场畸变严重

但畸变程度不足以引发局部放电;粘结面存在空气隙时

气隙附近电场明显畸变

护套内外存在一个较大的电场梯度

当达到一定程度时会造成护套击穿。

Abstract

To enhance insulator reliability

a model of 220 kV AC composite insulator is established to simulate the surface electrical field of the composite insulator. The influences of grading ring

surface filth and internal defect on electrical field distribution are analyzed with the software COMSOL. The results reveal that: ① grading ring can lower the maximum surface electrical field greatly

and improve the nonuniformity of surface electric field effectively; ②when the insulator is covered with filth

the electrical field at the junction of the umbrella and the sheath distorts seriously

but the distortion degree is not enough to cause partial discharge; and ③ internal defect in the insulator results in clear destortion of electrical field around it

and a large electric field gradient exists on the sheath

which will cause sheath breakdown when the gradient reaches a certain degree.

关键词

Keywords

references

Views

421

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Analysis of the Electric Field of 330 kV Composite Insulator with Grading Rings

Optimization Design for Grading Ring of Composite Insulators in UHV Transmission Lines Based on RBF-GA

Seismic Response and Impact Analysis of UHV Composite Double-pillar Equipment with Tubular-busbar Coupling

Thermal Aging Characteristics Analysis of HTV Silicone Rubber Composite Insulator Shed

Study on Hydrophobicity Diagnosis Method of Composite Insulator Based on Lightweight Convolution Neural Network

Related Author

JIANG Xun

WANG Zhong-yi

ZHANG Yujiao

XU Binzhao

XU Tianyong

LI Qiang

ZHANG Changhong

YU Rongxing

Related Institution

School of Electrical Engineering,Xi’an Jiaotong University

西安交通大学电气工程学院陕西西安710049

College of Electrical Engineering and New Energy, China Three Gorges University

Hubei Electric Power Maintenance Company

CSG Extra High Voltage Power Transmission Company, Dali Bureau

⁰