基于地电位均布的共享铁塔接地网设计方案  

Design Scheme of Shared Tower Grounding Network Based on Uniform Ground Potential Distribution

作　　者：匡宇来 唐波[1,2] 谢黄海 李勃铖 刘钢 KUANG Yulai;TANG Bo;XIE Huanghai;LI Bocheng;LIU Gang(College of Electronic Engineering&New Energy,Three Gorges University,Yichang 443002,China;Hubei Provincial Engineering Technology Research Center for Power Transmission Line,Yichang 443002,China)

机构地区：[1]三峡大学电气与新能源学院,湖北宜昌443002 [2]湖北省输电线路工程技术研究中心,湖北宜昌443002

出　　处：《电瓷避雷器》2022年第2期115-124,共10页Insulators and Surge Arresters

摘　　要：共享铁塔中移动基站的接地标准较为苛刻,需要对传统输电铁塔接地网进行改造以满足基站接地要求。笔者采用场路结合的方法,对接地导体进行分段处理,计算各分段导体的自电阻和互电阻,推导了共享铁塔接地网地电位的求解公式,进而判断接地网地电位的均匀程度。参照现有电力与通信的接地标准,提出了共享铁塔接地网的设计思路以及4种设计方案。计算结果表明,网状结构加垂直接地极的接地网设计方案可保证地电位分布最均匀,最大地电位梯度相比于简单扩大接地网面积的设计方案降了43.83%。The grounding standard of mobile base station in shared tower is relatively strict, so it is necessary to transform the grounding network of traditional transmission tower to meet the grounding requirement of base station. The method of field-circuit coupling is adopted to treat the ground conductor in sections, calculate the self-resistance and cross-resistance of each section conductor, derive the solution formula of ground potential of grounding grid of shared tower, and then judge the uniformity of ground potential of grounding grid. Referring to the existing grounding standard of power and communication, the design idea and 4 design schemes of shared tower grounding grid are put forward. The results show that the design scheme of grounding grid with mesh structure and vertical grounding electrode can ensure the most uniform distribution of ground potential and the maximum potential gradient is 43.83% lower than that of the simple plan of expanding the area of the ground network.

关 键 词：共享铁塔 接地网 地电位均布 场路结合 设计方案 

分 类 号：TM862[电气工程—高电压与绝缘技术]