山区线路避雷器在山区的应用和接地装置模型

The Application of Line Arresters in Mountains and Design of Relevant Grounding Device Models

本文分析了高土壤电阻率地区线路防雷接地的现状。通过工程实例分析,杆塔接地电阻不是很大时,可在易闪络杆塔上安装一组避雷器,并且易闪络杆塔的接地电阻要小于相邻杆塔。探讨了接地装置模型设计,提出了采取接地镀铜钢管注水降低接地电阻的新途径。

This paper analyzes the status quo of lightning pro- tection and grounding of lines in high-soil-resis- tivity areas. Through the study of actual engineer- ing cases leads to the conclusion that a set of ar- resters can be installed on towers vulnerable to flashovers while the tower grounding resistance is not very large and the grounding resistance of tow- ers vulnerable to flashovers is smaller than that of adjacent towers. This paper also probes into the design of the grounding device model, putting for- ward a new approach to reducing the grounding resistance, i.e. injecting water into the soil around the grounding electrode through copper-plating steel pipes.