有效降低输电线路杆塔接地电阻的措施研究

Measurement Study on Reducing Grounding Resistance of Pole and Tower of Power Transmission Line

为输电系统的安全稳定运行,降低杆塔接地电阻是提高线路耐雷水平、减少线路雷击跳闸率的主要措施。通过对输电线路杆塔接地电阻偏高的现象的分析,从杆塔接地装置的设计、计算入手,结合杆塔施工工程实例,查找到设计、施工、运行等方面引起接地电阻偏高的原因,从路径选择、勘探设计、工程施工、运行维护等方面提出了切实可行的措施,找到了降低杆塔接地电阻的方法,达到了研究目的。

to guarantee safe and stable operation of transmission system,it is a main measurement of reducing grounding resistance to improve lightning withstand level and reduce lightning stroke tripping. By analyzing the phenomena of grounding resistance of pole and tower of power on the high side, the higher side reasons of design, construction and operation and etc to grounding resistance can be found out in combination with practical examples. The workable measurements can be proposed from the angles of route selection, prospecting design, project construction, operational maintenance,and the ways to reduce grounding resistance of pole and tower of power were found out and achieved its aim.