高电压技术2012，Vol.38Issue(12)：3323-3330,8.
特高压输电线路杆塔基础独立接地性能仿真分析
Independent Ground Performance Simulation Analysis of UHV Transmission Line Tower Footings
摘要
Abstract
In order to master the independent grounding performance of the UHV transmission line tower footings, guiding the UHV transmission line grounding design, we investigated the typical structure of UHV tower footings and artificial grounding devices, calculated grounding resistance of various tower footings based on CDEGS, and analyzed various factors. The reduction in resistance of the grounding devices was compared, and potential level and distribution characteristics around the tower in the presence and absence of the grounding devices were simulated. The results show that, most types of tower footings meet the requirements of resistance design when soil resistivity is less than 1 000 Ω·m, most grounding footings cannot meet the requirements of resistance design and need artificial grounding devices or secondary resistance reduction measures when soil resistivity is larger. Artificial grounding devices reduce the max potential rise and the surrounding potential difference. The potential distribution with tower footings cannot meet the touch voltage goal expect the soil resistivity is very small. The simulated error are analyzed by comparing with field measurements, the results show that the modeling method is effective and the simulation deviation is within the allowable range.关键词
特高压（UHV）/输电线路/杆塔基础/接地电阻/电位分布/接触电势/现场测量Key words
ultra high voltage ( UHV )/transmission distribution/touch potential/field measurement line/tower footing/grounding resistance/potential分类
信息技术与安全科学引用本文复制引用
童雪芳,董晓辉,谷定燮..特高压输电线路杆塔基础独立接地性能仿真分析[J].高电压技术,2012,38(12):3323-3330,8.基金项目
基金资助项目：国家电网公司科技项目（EPRIGYKJ[2012]4747）. （）
