直流电缆屏蔽料对XLPE绝缘空间电荷的影响  

Effects of DC Cable Shielding Materials on Space Charge in XLPE Insulation

作　　者：张伟[1] 慕坵林 姚晶晶[1] 徐曼[1] 傅明利 侯帅 田野 王国利 

机构地区：[1]西安交通大学电气绝缘研究中心,西安710049 [2]南方电网科学研究院,广州510080

出　　处：《南方电网技术》2015年第10期19-25,共7页Southern Power System Technology

基　　金：特高压工程技术(昆明;广州)国家工程实验室开放基金项目(NEL201502)~~

摘　　要：随着交联聚乙烯(XLPE)绝缘直流电缆电压等级的提高,对半导电屏蔽料的质量及可靠性的要求也越来越高。选用了2种国外高电压等级用直流半导电屏蔽料、一种国产较为优秀的半导电屏蔽料和国内XLPE直流电缆绝缘料作为试验材料,测试了3种屏蔽料的热、电性能,屏蔽与绝缘的复合性能,研究了3种屏蔽料对XLPE绝缘空间电荷的影响。通过对试验结果的综合分析,提出了炭黑填充量、炭黑粒径和基体树脂以及界面结合情况是影响半导电屏蔽料体积电阻率和空间电荷注入的关键因素。With the rise of XLPE insulated DC cable voltage level,the requirements on the quality and reliability of semi-conductive shielding material are increasing. In this paper,two imported and one domestic high quality HVDC semi-conductive shielding materials in combination with one domestic XLPE DC cable insulation material are selected for testing. Their thermal,electrical properties,shielded and insulated composite performance are tested. The effects of DC cables shielding materials on space charge in XLPE insulation are analyzed. On the basis of these results and analysis,the filling amount and particle size of carbon black,the matrix resinare and interface bonding are proposed to be the key factors which affect the volume resistivity and space charge of semi-conductive shielding materials.

关 键 词：高压直流电缆 半导电屏蔽 空间电荷 绝缘-屏蔽复合界面 

分 类 号：TM464[电气工程—电器]