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高压、超高压直流电缆绝缘料用LDPE性能研究

Research on LDPE for HV/EHVDC Cable Insulation Material

Electrical Engineering and Technology / 2021,2(2): 1-9 / 2021-06-21 1020 787

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• Authors: 刘淑军¹ 吴启仁¹ 曾浩² 高凯²
• Information:

  1．中国三峡新能源（集团）股份有限公司，北京；
  2．南瑞集团有限公司（国网电力科学研究院有限公司），南京

• Keywords:
  EHVDC cable; LDPE; GPC; Volume resistivity; DC breakdown
  超高压直流电缆; LDPE; 凝胶渗透色谱; 体积电阻率; 直流击穿
• Abstract: In order to achieve the goal of carbon peak and carbon neutrality, a new power system with new energy as the main body should be built, and HV and EHV DC cables will become the main backbone network component of the new power grid. The focus of DC cable research is on insulating materials, but there is little research on low density polyethylene (LDPE) for insulating materials in cable industry. Four kinds of LDPE (A, B, C, D) for MV/HV cable insulation material from manufacturers home and abroad were selected in this paper. The key performance parameters were compared by means of GPC, tensile test, volume resistivity test and DC breakdown test. A is more suitable as the base resin and these results will provide experimental and data support for the localization of EHVDC cable insulation material. 为实现碳达峰碳中和目标，应构建以新能源为主体的新型电力系统，而高压、超高压直流电缆将成为新型电网的主力骨干网络组成部分。直流电缆的研究重点是绝缘料，然而行业内对绝缘料用低密度聚乙烯（LDPE）研究较少。本文选取国内外中高压电缆绝缘料专用的四种LDPE A、B、C、D，通过高温凝胶渗透色谱（GPC）、拉伸测试、体积电阻率测试、直流击穿测试以及杂质检测等手段，对比性能参数，优选出基础树脂A，为实现超高压直流电缆绝缘料国产化提供了实验和数据支撑。
• DOI: https://doi.org/10.35534/eet.0202006
• Cite: 刘淑军，吴启仁，曾浩，等．高压、超高压直流电缆绝缘料用LDPE 性能研究［J］．电气工
  程与技术，2021，2（2）：1-9．