典型架空输电线路电磁取能地线的选择  

Selection of Ground Wire of Electromagnetic Power Tapping for Typical Overhead Transmission Line

作　　者：刘益岑[1] 薛志航[1] 龚奕宇[1] 蒋兴良[2] 谢彦斌[2] 胡建林[2] 

机构地区：[1]国网四川省电力公司电力科学研究院,四川成都610072 [2]重庆大学,重庆400044

出　　处：《四川电力技术》2015年第5期21-24,42,共5页Sichuan Electric Power Technology

基　　金：四川电网复杂运行工况下的在线监测装置适应性评估及运维关键技术研究(521997135062)

摘　　要：地线取能是输电线路在线监测装置较为理想的供电方式,地线取能设计首先面对的是取能地线的选择。以四川省电力公司所属的某500 k V线路为基础,借助EMTP-ATP程序对光纤复合地线(OPGW)和普通地线在取能功率、雷电冲击影响以及工程可行性(主要指安装实施)3方面的表现进行分析比较。分析表明,OPGW在取能功率和防雷性能上较优,但取能装置安装不方便(只宜在光纤续接塔处安装);普通地线则在取能功率和防雷性能上较差,但是安装比较方便,且安装位置不限(几乎可以在线路上任何一基杆塔上安装)。最后以此为基础,讨论了选择取能地线的基本原则和方法。Tap- off power from ground wire is an ideal method for on- line monitoring devices of transmission line. The first step to design tap- off power from ground wire is the selection of ground wire of tap- off power. Based on 500 k V lines of Sichuan Electric Power Company,the performances of optical power ground wire（ OPGW） and ordinary ground wire in power,lightning impact and engineering feasibility（ the installation and implementation） are compared with EMTP- ATP. The results show that OPGW works better in power and lightning impact,while the installation of power- tapping devices isn＇t convenient（ only available at the connecting point of OPGW）,and for the ordinary ground wire,it behaves better in installation basically with no limits of installation（ almost available for every tower）,while it has worse performance in the other two aspects. Finally,the basic principles and methods to select ground wire of tap- off power are discussed.

关 键 词：输电线路 架空地线 在线取能 取能功率 

分 类 号：TM726.3[电气工程—电力系统及自动化]