无接地极直流输电线路金属回线选型设计  

Design of Metal Wires in Ungrounded Poles of Direct Current Transmission Line Selection

作　　者：林芳 向宇 雷雨泽 LIN Fang;XIANG Yu;LEI Yuze(Central Southern China Electric Power Design Institute Company Limited of China Power Engineering Consulting Group,Wuhan 130071,China)

机构地区：[1]中国电力工程顾问集团中南电力设计院有限公司,武汉430071

出　　处：《吉林电力》2022年第1期5-9,共5页Jilin Electric Power

基　　金：国家自然科学基金(51277135)。

摘　　要：为了有效解决高压直流输电系统接地极极址及线路路径选择困难的问题,考虑采用金属回线与极导线同塔架设的方案,对金属回线的特点进行了分析,提出了金属回线选型的主要原则,并以典型±800 kV直流输电线路为例,进行了金属回线的比选分析,推荐采用JNRLH1/G3A-500/45钢芯耐热铝合金绞线作为金属回线。In order to effectively solve the problem of high voltage direct current transmission system grounding poles and circuit route selection difficulties,the scheme of erecting metal wires and pole conductor on the same tower is considered..This paper analyzes the characteristics of the metal return line,puts forward the main principles of the metal return line selection,and takes the typical±800 kV direct current transmission line as an example,conducts the metal return line comparison and analysis.It is recommended to use JNRLH1/G3 A-500/45 steel core heat-resistant aluminum alloy stranded wire as metal wire.

关 键 词：无接地极直流输电线路 金属回线 选型设计 

分 类 号：TM75[电气工程—电力系统及自动化]