石墨缆柔性接地极在输电线路中的应用

Application of Graphite Cable Flexible Grounding Electrode in Transmission Lines

苏州部分地区的输电线路铁塔接地极存在易腐蚀、与土壤贴合度不高、易被偷盗和高成本等问题和隐患,为解决此类问题,提出一种新型石墨缆柔性接地极。分析石墨缆的材料性质和接地特性,对比分析石墨缆柔性接地极与镀锌钢接地极的导电性和全寿命周期内的费用,得出该材料的接地特点和适用范围。最后在苏州西部山区首次使用该技术的实际工程中,经过现场实际测量及后续观察,发现石墨缆柔性接地极确实比较适合在特殊强酸、易腐蚀地区进行接地改造,保护输电线路可靠运行。

There are some problems and hidden dangers such as easy corrosion,low compatibility with soil,easy theft and high cost in grounding poles of transmission lines in parts of Suzhou.To solve these problems,a new type of flexible grounding pole for graphite cable is proposed.The material properties and grounding characteristics of the graphite cable are analyzed,and the electrical conductivity and cost over the life cycle of the flexible grounding electrode of the graphite cable and the grounding electrode of galvanized steel are compared.Finally,in the practical project of using this technology for the first time in the western mountainous area of Suzhou,through the field measurement and follow-up observation,it is found that the flexible grounding electrode of graphite cable is really suitable for grounding transformation in special strong acid and corrosion-prone areas,so as to protect the reliable operation of the transmission lines.