接地极线路大跨越导线选型  

Conductor Selection of Large Span Projects for Grounding Electrode Line

作　　者：赵庆周 郎需军 刘晓林 吴建晓 谭嘉宁 徐子轩 ZHAO Qingzhou;LANG Xujun;LIU Xiaolin;WU Jianxiao;TAN Jianing;XU Zixuan(Shandong Electric Power Engineering Consulting Institute Co.,Ltd.,Jinan 250014,China)

机构地区：[1]山东电力工程咨询院有限公司,山东济南250014

出　　处：《电工技术》2025年第3期153-156,共4页Electric Engineering

摘　　要：随着特高压直流工程的日益增多,特高压换流站及配套接地极的站址选择日趋困难,若特高压换流站与配套接地极分置于大型通航河流两侧,则将不可避免形成接地极线路大跨越。目前,国内尚未有投运的接地极线路大跨越,基于接地极线路特点及大跨越工程导线选择原则,从电气特性和机械特性两方面对5种特强钢芯高强耐热铝合金绞线进行综合比较,最终推荐采用KTACSR/EST-500/230特强钢芯高强耐热铝合金绞线,为后续地极线路大跨越导线选型提供依据。With the increasing number of UHVDC(Ultra-High Voltage Direct Current)projects,it is increasingly difficult to select the site of UHV converter station and supporting grounding pole.If UHV converter station and supporting grounding pole are located on both sides of a large navigable river,it will inevitably form a large grounding pole line crossing.At present,there are no grounding electrode line for large span projects around China.Based on the characteristics of ground pole lines and the principle of wire selection for large span engineering,this paper selects 5 kinds of high-strength heat-resistant aluminum alloy stranded wires with extra-strong steel core for comprehensive comparison in terms of electrical characteristics and mechanical properties.Finally,the recommendation is to use KTACSR/EST-500/230 extra-strong steel core high-strength heat-resistant aluminum alloy stranded wires,which provides a basis for the conductor selection of large span projects for the following grounding electrode lines.

关 键 词：特高压直流工程 接地极线路 大跨越 导线选型 

分 类 号：TM751[电气工程—电力系统及自动化]