Distribution Characteristics of Tracking Failure on XLPE-silicon Rubber Interface with Micro-cavity

XIA Yan-song1; LUO Li-shi1; LI Yong-dong1; ZHANG Jin-xiang1; WEI Xiao-wei1; WEI Hai-jun1; ZHANG Yu1; GU Liang2

doi:10.13296/j.1001-1609.hva.2011.12.021

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Distribution Characteristics of Tracking Failure on XLPE-silicon Rubber Interface with Micro-cavity

更新时间：2025-04-26

- Distribution Characteristics of Tracking Failure on XLPE-silicon Rubber Interface with Micro-cavity
- High VoltageApparatus Vol. 47, Issue 12, Pages: 109-114(2011)
- 作者机构：
  
  1. 华北电网有限公司北京超高压公司
  2. 重庆理工大学
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2011.12.021
  CLC： TM247
- Published：2011
- 稿件说明：
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[1]夏岩松,骆立实,李永东,张金祥,魏晓伟,魏海军,张宇,古亮.划痕类微孔对交联聚乙烯—硅橡胶界面电痕破坏的影响[J].高压电器,2011,47(12):109-114.

XIA Yan-song1, LUO Li-shi1, LI Yong-dong1, et al. Distribution Characteristics of Tracking Failure on XLPE-silicon Rubber Interface with Micro-cavity[J]. High voltageapparatus, 2011, 47(12): 109-114.
[1]夏岩松,骆立实,李永东,张金祥,魏晓伟,魏海军,张宇,古亮.划痕类微孔对交联聚乙烯—硅橡胶界面电痕破坏的影响[J].高压电器,2011,47(12):109-114. DOI： 10.13296/j.1001-1609.hva.2011.12.021.

XIA Yan-song1, LUO Li-shi1, LI Yong-dong1, et al. Distribution Characteristics of Tracking Failure on XLPE-silicon Rubber Interface with Micro-cavity[J]. High voltageapparatus, 2011, 47(12): 109-114. DOI： 10.13296/j.1001-1609.hva.2011.12.021.

摘要

交联聚乙烯电力电缆安装过程中可能会产生刀具划痕类微孔和微导电屑等缺陷。在分析界面电痕破坏过程中的放电光和炭化分布的基础上

研究了划痕类微孔对交联聚乙烯—硅橡胶界面电痕破坏的影响。试验中使用1片聚乙烯和1片硅橡胶样品模拟交联电缆接头的界面并在界面两端设置电极。界面划痕分为分布在两电极之间、连接高压电极、贯穿两电极3种情况。高压实验电源施加于两电极上直至界面电痕破坏。使用摄像机录制了界面从放电至电痕破坏整个过程的放电光和炭化通道分布。随后

对放电光和炭化通道的宽度分布的分析结果表明

划痕增强了电荷的输运

易导致界面放电和电痕破坏。界面存在微导电屑时的界面放电光和炭化分布特征证明了这个结论。

Abstract

The installation of XLPE cable joint may introduce defects into the XLPE-silicon rubber interface

such as micro-cavity and micro-wire.This study investigated the effect of micro-cavity on tracking failure by analyzing the distribution characteristics of discharge light and carbonization.Three kinds of interfaces with different configurations of artificial micro-cavities were tested.Each interface was setup by pressing a slice of XLPE and a slice of transparent silicon rubber together.High voltage（AC

50 Hz） was applied on a pair of flat-round electrodes sandwiched in the interface with their insulation distance of 5 mm until tracking failure occurred.The discharge light from starting discharge to the failure and the carbonization after the failure were recorded with a digital video recorder

then their channel widths were analyzed.The results show that micro-cavity at the XLPE-silicon rubber interface strengthens the transportation of charge

and easily leads to interfacial discharge and tracking failure.Investigation of channel widths of discharge light and carbonization on the interface with small metallic conductor is helpful in better understanding the tracking failure process and mechanism of XLPE cable joint.

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