电气化牵引线路杆塔故障时跨步电位差与接触电位差分析  

Analysis on step and touch potential difference in the breakdown of power traction transmission lines

作　　者：任华钢[1] 倪玉贵[2] 

机构地区：[1]湖南省电力公司岳阳电业局,湖南岳阳414000 [2]湖南省电力公司常德电业局,湖南常德415000

出　　处：《湖南电力》2011年第3期25-28,52,共5页Hunan Electric Power

摘　　要：变电站架构或输电线路杆塔在单相接地或相间短路接地故障时,对地电位会升高,从而可能出现危及人身安全的接触电位与跨步电压。本文根据110 kV新牵T汨线路4号铁塔现场对接触电位与跨步电位的实测和分析,提出相应对策并对其可能引起的的接地危害进行风险评估。When the breakdown of substation frame or tower in transmission lines occurs in single-phase or interphase short circuit and grounding,grounding potential will rise,then possible step and touch potential will endanger personal safety.According to the measure and analysis of step and touch potential of 4th iron tower for 110kV Xinqian transmission line,corresponding countermeasure is presented and probable grouding risk is appraised in the paper.

关 键 词：杆塔故障 跨步电压 接触电位差 

分 类 号：TM75[电气工程—电力系统及自动化]