Summary
This study proposes a simplified and efficient strategy to develop high-performance HVDC insulation by designing a silane-integrated system based on a standard AC XLPE formulation.
Read more Read lessInstead of modifying commercial products or employing complex grafting, three types of functional vinyl silanes (VS-L, VS-M, VS-H) with varying alkoxy densities were incorporated as a key component into the base formulation. The results demonstrate that VS-H, characterized by the highest alkoxy density, significantly enhances electrical reliability at 90℃, achieving a
DC breakdown strength of 283 kV/mm (a 15% increase over the reference) and a near-ideal field enhancement factor (FEF) of 1.03. These improvements are attributed to the formation of localized deep traps that effectively immobilize charge carriers and suppress field distortion.
Furthermore, the VS-H system exhibited superior thermomechanical stability with a hotelongation of 54% and excellent retention of mechanical properties after thermal aging. This research establishes that integrating high-density silane into a conventional AC XLPE is a robust and practical route for next-generation HVDC cable insulation.
Additional informations
| Publication type | Session Materials |
|---|---|
| Reference | D1_11785_2026 |
| Publication year | |
| Publisher | CIGRE |
| Country | Korea, Republic of (South Korea) |
| Study committees | |
| File size | 953 KB |
| Price for non member | 30 € |
| Price for member | 30 € |
Authors
LEE Taekwon - Hanwha Solutions; KIM Chanwook - Hanwha Solutions; KIM Sunkak - Hanwha Solutions; LEE Youngjoo - Hanwha Solutions
Keywords
