特高强钢芯铝合金绞线在大跨越输电线路中应用  

Application of Ultra High Strength Steel Cored Aluminum Alloy Strand in Large-Span Transmission Line

作　　者：姚成 张瑞永 赵新宇 YAO Cheng;ZHANG Rui-yong;ZHAO Xin-yu(China Energy Engineering Group Jiangsu Electric Power Design Institute Co.,Ltd,Nanjing 211100,China)

机构地区：[1]中国能源建设集团江苏省电力设计院有限公司,江苏南京211100

出　　处：《电工电气》2022年第10期30-35,共6页Electrotechnics Electric

摘　　要：导线选型是大跨越输电线路的关键技术之一,对工程造价和安全运行意义重大。针对特高强钢芯铝合金绞线进行了载流能力分析,对导电材质不一样的JLHA1与NRLH2型两种特高强钢芯铝合金绞线进行了对比分析,从输送能力、铝部应力、经济性等方面系统地分析了特高强钢芯铝合金绞线导电层、承力层材质、铝钢比、钢芯强度对大跨越导线选型设计的影响,并给出大跨越输电线路导线设计建议。Conductor selection is one of the vital technologies of large-span transmission lines,which has great significance to the project cost and the safe operation.This paper analyzed the current carrying capacity of ultra high strength steel cored aluminum alloy strands,and two kinds of ultra high strength steel cored aluminum alloy strands with different conductive materials,JLHA1 and NRLH2,are compared and analyzed.Moreover,this research systematically analyzed the influence of the conductive layer,materials of the stressed layer,different aluminum steel ratios,and the steel core strength of the ultra high strength steel cored aluminum alloy strand on the design of the selection of large-span conductors from aspects of transmission capacity,stress of aluminum part,and strength of steel cored.Furthermore,this study provides suggestions for the design of large-span conductors.

关 键 词：大跨越输电线路 特高强钢芯铝合金绞线 铝部应力 铝钢比 钢芯强度 

分 类 号：TM726.3[电气工程—电力系统及自动化] TM751