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Correlation of Macroscopic Interface Breakdown Characteristics and Microscopic Particle Motions at the XLPE-SiR Insulation Interface of Cable Joints.

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Title: Correlation of Macroscopic Interface Breakdown Characteristics and Microscopic Particle Motions at the XLPE-SiR Insulation Interface of Cable Joints.
Authors: Wang, Kai1 (AUTHOR), Chen, Weijun1,2 (AUTHOR), Zhong, Zhicong1 (AUTHOR), Xie, Haobin1,2 (AUTHOR), Zheng, Zhaodian1 (AUTHOR), Yan, Pengda1 (AUTHOR), Zeng, Yanqi2 (AUTHOR), Liu, Jiajun2 (AUTHOR), Liu, Gang2 (AUTHOR) liugang@scut.edu.cn
Source: Energies (19961073). Mar2026, Vol. 19 Issue 5, p1195. 14p.
Subject Terms: *Dielectric breakdown, *Particle motion, *Ionization (Atomic physics), *Electric discharges, *Cross-linked polyethylene insulation, *Surface pressure, *Pyrolysis
Abstract: This paper explores the correlation between the macroscopic breakdown behavior and microscopic particle motion of cable joint cross-linked polyethylene–silicone rubber (XLPE-SiR) insulation interface breakdown. Firstly, based on the characteristics of Pd values exceeding 1000 Torr·cm at the insulation interface, it shows that XLPE-SiR insulation interface breakdown falls within the scope of streamer discharge. Further, the generation process of the insulation interface breakdown is described through microscopic particle motions, and the microscopic expression of the interface breakdown energy of cable joints is derived. Based on this, it is found that the ionization degree (χ) of the interface breakdown channel is the major microscopic parameter that affects the interface breakdown energy. An experiment was conducted on equivalent samples under different conditions of pyrolysis degree interface pressure (P) and breakdown gap (d). The experiment shows that the value of χ is positively related to the pyrolysis degree and P. Additionally, it is found that with the increase in d, the value of χ increases at first and then decreases gradually. The results of this paper can be taken as a basis for research on the microscopic process of XLPE-SiR insulation interface breakdown at different stages. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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Header DbId: enr
DbLabel: Energy & Power Source
An: 192640920
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Correlation of Macroscopic Interface Breakdown Characteristics and Microscopic Particle Motions at the XLPE-SiR Insulation Interface of Cable Joints.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Wang%2C+Kai%22">Wang, Kai</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chen%2C+Weijun%22">Chen, Weijun</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhong%2C+Zhicong%22">Zhong, Zhicong</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Xie%2C+Haobin%22">Xie, Haobin</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zheng%2C+Zhaodian%22">Zheng, Zhaodian</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yan%2C+Pengda%22">Yan, Pengda</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zeng%2C+Yanqi%22">Zeng, Yanqi</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Jiajun%22">Liu, Jiajun</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Gang%22">Liu, Gang</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> liugang@scut.edu.cn</i>
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  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Energies+%2819961073%29%22">Energies (19961073)</searchLink>. Mar2026, Vol. 19 Issue 5, p1195. 14p.
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: *<searchLink fieldCode="DE" term="%22Dielectric+breakdown%22">Dielectric breakdown</searchLink><br />*<searchLink fieldCode="DE" term="%22Particle+motion%22">Particle motion</searchLink><br />*<searchLink fieldCode="DE" term="%22Ionization+%28Atomic+physics%29%22">Ionization (Atomic physics)</searchLink><br />*<searchLink fieldCode="DE" term="%22Electric+discharges%22">Electric discharges</searchLink><br />*<searchLink fieldCode="DE" term="%22Cross-linked+polyethylene+insulation%22">Cross-linked polyethylene insulation</searchLink><br />*<searchLink fieldCode="DE" term="%22Surface+pressure%22">Surface pressure</searchLink><br />*<searchLink fieldCode="DE" term="%22Pyrolysis%22">Pyrolysis</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: This paper explores the correlation between the macroscopic breakdown behavior and microscopic particle motion of cable joint cross-linked polyethylene–silicone rubber (XLPE-SiR) insulation interface breakdown. Firstly, based on the characteristics of Pd values exceeding 1000 Torr·cm at the insulation interface, it shows that XLPE-SiR insulation interface breakdown falls within the scope of streamer discharge. Further, the generation process of the insulation interface breakdown is described through microscopic particle motions, and the microscopic expression of the interface breakdown energy of cable joints is derived. Based on this, it is found that the ionization degree (χ) of the interface breakdown channel is the major microscopic parameter that affects the interface breakdown energy. An experiment was conducted on equivalent samples under different conditions of pyrolysis degree interface pressure (P) and breakdown gap (d). The experiment shows that the value of χ is positively related to the pyrolysis degree and P. Additionally, it is found that with the increase in d, the value of χ increases at first and then decreases gradually. The results of this paper can be taken as a basis for research on the microscopic process of XLPE-SiR insulation interface breakdown at different stages. [ABSTRACT FROM AUTHOR]
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        Value: 10.3390/en19051195
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      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 14
        StartPage: 1195
    Subjects:
      – SubjectFull: Dielectric breakdown
        Type: general
      – SubjectFull: Particle motion
        Type: general
      – SubjectFull: Ionization (Atomic physics)
        Type: general
      – SubjectFull: Electric discharges
        Type: general
      – SubjectFull: Cross-linked polyethylene insulation
        Type: general
      – SubjectFull: Surface pressure
        Type: general
      – SubjectFull: Pyrolysis
        Type: general
    Titles:
      – TitleFull: Correlation of Macroscopic Interface Breakdown Characteristics and Microscopic Particle Motions at the XLPE-SiR Insulation Interface of Cable Joints.
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            NameFull: Wang, Kai
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            NameFull: Chen, Weijun
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            NameFull: Zheng, Zhaodian
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            – D: 01
              M: 03
              Text: Mar2026
              Type: published
              Y: 2026
          Identifiers:
            – Type: issn-print
              Value: 19961073
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              Value: 19
            – Type: issue
              Value: 5
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            – TitleFull: Energies (19961073)
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