Enhanced Electrical Properties of Styrene-grafted Polypropylene Insulation for Bulk Power Transmission HVDC Cables

Hao Yuan; Shixun Hu; Yao Zhou; Chao Yuan; Wenbo Song; Qing Shao; Hongwei Shi; Juan Li; Jun Hu; Qi Li; Jinliang He

doi:10.17775/CSEEJPES.2021.00850

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Enhanced Electrical Properties of Styrene-grafted Polypropylene Insulation for Bulk Power Transmission HVDC Cables

Regular Papers | 更新时间：2026-10-15

- Enhanced Electrical Properties of Styrene-grafted Polypropylene Insulation for Bulk Power Transmission HVDC Cables
- CSEE Journal of Power and Energy Systems Vol. 10, Issue 1, Pages: 361-370(2024)
- 作者机构：
  
  1. SINOPEC Beijing Research Institute of Chemical Industry,Beijing,China
  2. Department of Electrical Engineering, State Key Laboratory of Power Systems, Tsinghua University,Beijing,China
- 作者简介：
- 基金信息：
- DOI：10.17775/CSEEJPES.2021.00850
  CLC：
- Published：01 January 2024
- 稿件说明：
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Hao Yuan, Shixun Hu, Yao Zhou, et al. Enhanced Electrical Properties of Styrene-grafted Polypropylene Insulation for Bulk Power Transmission HVDC Cables[J]. CSEE Journal of Power and Energy Systems, 2024, 10(1): 361-370.
DOI：

Hao Yuan, Shixun Hu, Yao Zhou, et al. Enhanced Electrical Properties of Styrene-grafted Polypropylene Insulation for Bulk Power Transmission HVDC Cables[J]. CSEE Journal of Power and Energy Systems, 2024, 10(1): 361-370. DOI： 10.17775/CSEEJPES.2021.00850.

摘要

Abstract

Polypropylene (PP) is considered to be a rather promising material for HVDC cable insulation. Grafting modi-fication has proved to be an effective method on the electrical property improvements of PP. This paper reports on the highly-enhanced electrical properties of styrene-grafted polypropylene (PP-g-St) and their related mechanism. The influence of grafting styrene on crystallization structures

thermal properties and electrical properties of PP-g-St are characterized and analyzed. These results show that PP-g-St exhibits remarkably enhanced DC volume resistivity

suppressed space charge accumulation and improved DC breakdown strengths as compared to PP. Crystallization observation shows PP-g-St has small

imperfect spherulites with indistinct boundaries

which is strongly correlated to enhanced electrical properties. This study provides an effective grafting strategy to design high-performance HVDC cable insulation materials for bulk power transmission systems.

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