高压XLPE电缆绝缘V-t特性研究综述  

Reviewon Research of V-t Characteristics of HV XLPE Cables

作　　者：刘霞[1] 于钦学[1] 钟力生[1] 傅明利 侯帅 

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57-63,共7页Southern Power System Technology

摘　　要：交联聚乙烯（cross-linked polyethylene,XLPE）绝缘电力电缆是输电线路的重要电力设备。针对高压交流和直流电缆系统的运行现状,介绍了运用V-t特性（击穿电压与击穿时间的关系）曲线描述XLPE电缆绝缘的电老化寿命模型,分析了国内外高压交、直流XLPE电缆绝缘V-t特性的研究方法及相关结果。已有的研究结果表明,交流XLPE电缆绝缘的电老化寿命指数n值在9~25之间,直流XLPE电缆绝缘的电老化寿命指数n值在13~20之间。国内目前尚未见有关直流电缆绝缘V-t特性研究的文献报道。XLPE（ cross-linked polyethylene） insulated cable is an important component of power transmission lines. In allusion to the operating status of HVAC and HVDC cables,the paper introduces the electrical ageing model of XLPE cable insulation based on the typical V-t characteristics（ the relationship between breakdown voltage and breakdown time） and the research method of V-t characteristics both of HVAC and HVDC XLPE insulated cables. Previous research showthat the electrical aging lifetime index n of AC XLPE cable is between 9 and 25,while the electrical aging lifetime index n of DC XLPE cable from very limted research shows that it’s between 13 and 20. And there is no research on V-t characteristics of DC cables having been reported yet in China.

关 键 词：交联聚乙烯 高压交流和高压直流电缆 V-t特性 电老化寿命指数 

分 类 号：TM726.1[电气工程—电力系统及自动化]