摘要
桂林地区配电网设备接地因岩石地质原因,难以施打接地桩及敷设接地网,造成电阻超标的问题日益突出。柔性石墨接地极相较传统镀锌钢接地材料具有更加稳定、耐腐蚀等接地特性,因此开展线路杆塔接地改造关键技术的研究。对桂林地区进行土壤结构和杆塔接地电阻进行勘察,将柔性石墨接地极应用于10 kV线路杆塔接地改造,并评估接地电阻、接触电压、跨步电压等安全标准。
In view of the rock geology of distribution network equipment grounding in Guilin area,it is difficult to construct the grounding pile,and the grounding resistance of the grounding grid exceeds the standard.Compared with the traditional galvanized steel grounding material,the flexible graphite grounding electrode has more stable and corrosion-resistant grounding characteristics.Therefore,the key technology research of grounding transformation of line tower was carried out.The soil structure and tower grounding resistance were investigated in Guilin area,and the flexible graphite grounding electrode was applied to the transformation of 10 kV transmission tower grounding.The safety standards such as grounding resistance,contact voltage and step voltage were evaluated.
作者
董刚
蒋剑
钱帅伟
蒋增红
韦懿桓
王辰
阳海峰
DONG Gang;JIANG Jian;QIAN Shuaiwei;JIANG Zenghong;WEI Yihuan;WANG Chen;YANG Haifeng(Guilin Power Supply Station of Guangxi Power Grid,Guilin 541000,China)
出处
《现代建筑电气》
2020年第10期41-44,共4页
Modern Architecture Electric
关键词
柔性石墨接地极
10
kV线路杆塔
接地改造
接地电阻
接触电压
跨步电压
flexible graphite grounding material
10 kV line tower
grounding transformation
grounding resistance
contact voltage
step voltage