500 kV电力电缆用国产交联聚乙烯绝缘材料性能分析  

Performance Analysis of a Domestic Crosslinked Polyethylene Insulating Material for 500 kV Power Cable

作　　者：闫轰达 李文鹏 张翀 睢锐 李飞[2] 何霖 钟力生[2] YAN Hongda;LI Wenpeng;ZHANG Chong;SUI Rui;LI Fei;HE Lin;ZHONG Lisheng(State Grid Smart Grid Research Institute Co.,Ltd.,Beijing 102209,China;State Key Laboratory of Electrical Insulation and Power Equipment,Xi’an Jiaotong University,Xi’an 710049,China)

机构地区：[1]国网智能电网研究院有限公司,北京102209 [2]电力设备电气绝缘国家重点实验室(西安交通大学),陕西西安710049

出　　处：《中国电力》2023年第2期86-92,共7页Electric Power

基　　金：国家电网有限公司科技项目(高压电缆局部劣化缺陷的表征模型与高精度分布式感知方法研究,5500-202158334A-0-0-00)。

摘　　要：讨论了新型国产超净XLPE绝缘材料应用于500 kV交流电缆的适用性,首先分析了对应基料与进口基料在分子量以及分子链结构上的异同;然后对比研究了该国产绝缘材料与2种进口绝缘材料的电、热、力学性能,发现3种材料性能相当且均满足应用于500 kV电缆绝缘的要求;最后结合基料的分子链结构特性,认为在基料中引入更多的端基双键以提升交联效率,可能是后续国产绝缘材料提升的方向之一。The applicability of a new domestic super clean XLPE insulating material for 500 kV AC cables is discussed.Firstly,the similarities and differences between domestic and imported base resins in molecular weight and chain structure are analyzed.Furthermore,the electrical,thermal and mechanical properties of the domestic XLPE is studied and compared with those of two imported XLPE.It is found that the three materials have similar properties and all meet the requirements for 500 kV cables.Finally,based on the molecular chain structure of the base resin,it is concluded that the introduction of more terminal double bonds in the base resin to improve crosslinking efficiency may be one of the directions for the subsequent improvement of domestic insulating materials.

关 键 词：交联聚乙烯 交流电缆 国产化 交联 端基双键 

分 类 号：TM247[一般工业技术—材料科学与工程] TM21[电气工程—电工理论与新技术]