摘要
为了研究雷电流经接地极时的冲击特性,采用电磁暂态计算程序(ATP-EMTP)仿真的方法对水平接地体在脉冲电流下的冲击特性进行分析,得出接地电极的几何尺寸和土壤电阻率对冲击接地特性产生的影响。仿真结果表明:冲击接地电阻的大小随着接地体的尺寸的增加而增大,但增长的趋势渐缓,到一定长度时趋于稳定,冲击接地电阻大小与土壤电阻率成正比。
To make research on impact character when thunder flow passes through grounding pole, electromagnetic transient calculation process （ATP-EMTP） simulation method is used to analyze impact character of grounding body under pulse current, educing that geometric size of grounding pole and resistance rate of soil have impact on impact grounding character, Simulation results show impact grounding resistance increases with increment of size of ground- ing body, but it tends to crease slowly, and tends to be stable when reaching a given length. Amount of impact grounding resistance is directly proportional to resistance rate of soil.
出处
《电工技术》
2006年第11期35-36,共2页
Electric Engineering
