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STUDY ON THE DIFFERENCE OF DC BREAKDOWN STRENGTH BETWEEN XLPE AND LDPE

  • Yunfei Bai
  • , Shihang Wang
  • , Liuqing Yang
  • , Jiacai Li
  • , Shengtao Li
  • , Shenghe Wang
  • , Dong Pan
  • Xi'an Jiaotong University
  • State Grid Anhui Electric Power Company

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In order to study the difference of DC breakdown strength between cross-linked polyethylene (XLPE) and low-density polyethylene (LDPE). XLPE and LDPE from three kinds of cable insulating materials samples were selected to test the DC breakdown strength and thermally stimulated depolarization current (TSDC) and X-ray diffraction (XRD) experiments. The results showed that the increase of DC breakdown strength after crosslinking is the result of the synergistic effect of two factors. One factor is that the density of deep traps will increase after crosslinking, resulting in the increase of DC breakdown strength. The other factor is that the crystallinity will decrease after crosslinking, which will hinder the improvement of DC breakdown strength. The effect of deep trap density on DC breakdown strength is greater, so DC breakdown strength will increase after crosslinking. This work provides a reference for investigating the DC breakdown strength of XLPE and LDPE.

Original languageEnglish
Title of host publicationIET Conference Proceedings
PublisherInstitution of Engineering and Technology
Pages2078-2082
Number of pages5
Volume2021
Edition15
ISBN (Electronic)9781839536052
DOIs
StatePublished - 2021
Event22nd International Symposium on High Voltage Engineering, ISH 2021 - Xi'an, Virtual, China
Duration: 21 Nov 202126 Nov 2021

Conference

Conference22nd International Symposium on High Voltage Engineering, ISH 2021
Country/TerritoryChina
CityXi'an, Virtual
Period21/11/2126/11/21

Keywords

  • CABLE INSULATING MATERIALS
  • CRYSTALLINITY
  • DC BREAKDOWN
  • DEEP TRAPS

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