±1500 kV特高压直流输电线路导线选型研究  

Research on ±1 500 kV UHVDC Transmission Line Conductor Selection

作　　者：吴墨非 柏晓路 吴高波 岳浩 刘文勋 吕健双 WU Mofei;BAI Xiaolu;WU Gaobo;YUE Hao;LIU Wenxun;LYU Jianshuang(Central Southern China Electric Power Design Institute Co.,Ltd.of China Power Engineering Consulting Group,Wuhan 430071,China;HVDC Technology Department of China Energy Engineering Group Engineering Institute,Wuhan 430071,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,湖北武汉430071 [2]中国能建工程研究院高压直流技术研究所,湖北武汉430071

出　　处：《电力勘测设计》2023年第6期23-30,共8页Electric Power Survey & Design

摘　　要：在我国成功突破±1100kV直流输电技术的基础上,为实现±1500kV电压等级的全新跨越,文章从导线的电气特性和机械特性对±1500kV特高压直流输电线路导线截面及分裂数形式进行研究,并运用年费用最小法推荐经济性最优的导线型号。通过对不同分裂数及截面导线的计算和比较,充分考虑±1500kV输电线路输送容量大,输送距离长,损耗小时数与电价预计也较高的特点,推荐±1500kV特高压直流输电线路工程采用电磁环境和年费用均较优的10×JL1/G3A-1250/70导线型式,为实现电压等级跨越提供借鉴。On the basis of our breakthrough in ±1 100 kV DC transmission technology,in order to achieve a new leap of ±1 500 kV DC voltage level,this paper studies the conductor section and split number form of ±1 500 kV UHVDC transmission line from the electrical and mechanical characteristics of the conductor,and recommends the optimal economic conductor type by using the minimum annual cost method.Through calculation and comparison of conductors with different split numbers and cross sections,the characteristics of ±1 500 kV transmission line with large transmission capacity,long transmission distance,high loss hours and electricity price are taken into full consideration.The conductor 10×JL1/G3A-1250/70 has better electromagnetic environment and lower annual cost and is recommended for ±1 500 kV UHVDC transmission line project,which can provide reference for achieving voltage level improvement.

关 键 词：±1500 kV直流输电线路 导线选型 导线截面 分裂数 年费用最小法 电磁环境 

分 类 号：TM751[电气工程—电力系统及自动化]