摘要
输电线路杆塔利用电杆(铁塔)本体作为接地引线。铁塔全金属结构,作为接地引线,其性能良好;而混凝土电杆是由地线支架穿钉通过内配钢筋至接地螺栓作为接地引线,由于连接的不可靠和不能检查,故混凝土电杆接地引线导通性能较差。测量电杆接地电阻时,只把接地极这部分作为测量对象,忽视了对电杆本体这部分接地引线的测量,不能准确掌握输电线路电杆接地电阻的情况,从而给防雷治理和杆塔接地装置改造效果带来较大影响。通过选择典型的110 kV输电线路直线电杆(简称电杆)的导通电阻进行测量研究,为输电线路运行技术管理提供支持,为输电线路运行维护标准的完善和电杆设计制造工作提供信息支持。
The pole can be used as a conductor for the grounding in electric power supply circuits.The pole＇s material is well for the grounding in iron pagodas,but bad in concrete poles.If when measuring the grounding resistance of the pole,only measuring the earthing rod,neglecting measuring the pole conductor,this cannot accurately examine on-resistance of concrete poles and will bring bad effects on lightning protection and reformation of grounding.Taking typical 110kV electric power supply line poles as the research object to measure the on-resistance,by this research,to offer support to the transmission line operation technology management,and supply the information for the transmission line operation maintenance standard improvement and for the design and manufacture of poles.
出处
《华中电力》
2011年第3期65-68,共4页
Central China Electric Power
关键词
输电线路
导通电阻
接地电阻
研究
transmission line
on-resistance
grounding resistance
research
