一种输电线路架空地线带电直流融冰方法  

A method of energized DC ice-melting for overhead ground wire of transmission line

作　　者：高凯 罗日成[1] 刘娟 陈子骐 王昱彤 GAO Kai;LUO Richeng;LIU Juan;CHEN Ziqi;WANG Yutong(School of Electrical and Information Engineering,Changsha University of Science&Technology,Changsha 410114)

机构地区：[1]长沙理工大学电气与信息工程学院,长沙410114

出　　处：《电气技术》2024年第11期42-47,共6页Electrical Engineering

摘　　要：为了解决架空地线融冰需停电作业的问题,本文以两条并联的光纤复合架空地线(OPGW)和铝包钢绞线作为研究对象,提出一种架空地线带电直流融冰新方法。首先,对该方法中融冰回路的构成原理进行深入研究;然后,利用ATP-EMTP软件建立融冰电路的仿真模型,并计算融冰电流与融冰电源容量的大小;最后,利用COMSOL软件对OPGW与铝包钢绞线的融冰过程和OPGW脱冰后的温度分布进行仿真分析。研究表明,融冰电源安装在融冰段的中间位置时两条并联地线可以同时脱冰;融冰段内的直流电流对非融冰段的影响很小,可以忽略不计。In order to solve the problem that the overhead ground wire ice-melting needs power outage operation,this paper takes two parallel optical fiber composite overhead ground wires(OPGW)and Al-cladding steel strands as the research objects,and proposes a new method of energized DC ice-melting for overhead ground wires.Firstly,the composition principle of the ice-melting circuit in this method is studied in depth.Then,the simulation model of the ice-melting circuit is established by using ATP-EMTP software,and the ice-melting current and the capacity of the ice-melting power supply are calculated.Finally,the ice-melting process of OPGW and Al-cladding steel strand and the temperature distribution of OPGW after de-icing are simulated and analyzed by COMSOL software.The research show that when the ice-melting power supply is installed in the middle of the ice-melting section,two parallel ground wires can deice at the same time;the influence of DC current in the ice-melting section on the non-ice-melting section is very small and can be ignored.

关 键 词：架空地线 光纤复合架空地线(OPGW) 铝包钢绞线 带电 直流融冰 

分 类 号：TM752[电气工程—电力系统及自动化]