摘要
本文以四川省甘孜州九龙县某220kV线路12基杆塔接地网的改造为案例,提出在高土壤电阻率地区地网施工中,降阻剂多层施工方法和在水平射线末端增加抑制环的措施,可有效降低输电线路杆塔的接地电阻、地电位、接触电压,为输电线路杆塔的接地设计提供参考。
An upgrade of a grounding grid of 220kV transmission line tower with 12 bases in Jiulong County, Garze Tibetan Autonomous Prefecture, Sichuan Province is taken as an example of case in this article to illustrate that in the construction work of a grounding grid with high earth resistivity in the surrounding area, the grounding resistance, earth potential and contact voltage of transmission line towers can be effectively lowered by means of multiple layers construction of resistance reducing material and applying an additional restraining ring to the end of the level ground conductors at the base, for the reference of the design of a transmission line tower＇s grounding project.
出处
《电气技术》
2012年第11期78-81,共4页
Electrical Engineering
关键词
输电线路
接地电阻
地电位
接触电压
Transmission line
grounding resistance
earth potential
contact voltage
