Scholarlink

To investigate interfacial issues in prefabricated cable accessories for HVDC cables, this study examines the effects of different interface roughness on the polarization process in XLPE/SIR double-layer dielectrics. Commercial HVDC cable XLPE pellets were hot-pressed into specimens. The XLPE surfaces were polished using sandpapers of grit numbers #80, #400, #600, #1000, and #2000, alongside an unpolished control sample (#0000). These were combined with commercial silicone rubber (SIR) specimens to fabricate XLPE/SIR double-layer samples with varying interface roughness. Conductivity current tests were performed at ambient temperature and pressure, followed by analysis of conductivity and polarization processes. Results indicate that as interface roughness decreases, the polarization process initially accelerates, then slows, and finally accelerates again. Reducing interface roughness in prefabricated cable accessories can expedite polarization.

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Effect of Varying Interface Roughness on Polarization Characteristics in XLPE/SIR Double-layer Dielectrics

  • 会议论文

  • 发表日期：

    2026年

查看全文
  • Xun Yang,
  • Yuanxiang Zhou,
  • Xuzhao Hou

摘要

To investigate interfacial issues in prefabricated cable accessories for HVDC cables, this study examines the effects of different interface roughness on the polarization process in XLPE/SIR double-layer dielectrics. Commercial HVDC cable XLPE pellets were hot-pressed into specimens. The XLPE surfaces were polished using sandpapers of grit numbers #80, #400, #600, #1000, and #2000, alongside an unpolished control sample (#0000). These were combined with commercial silicone rubber (SIR) specimens to fabricate XLPE/SIR double-layer samples with varying interface roughness. Conductivity current tests were performed at ambient temperature and pressure, followed by analysis of conductivity and polarization processes. Results indicate that as interface roughness decreases, the polarization process initially accelerates, then slows, and finally accelerates again. Reducing interface roughness in prefabricated cable accessories can expedite polarization.