A simplified method for calculating the impulse resistance of vertical grounding rods

被引：0
|
作者：
Zhang, XQ [1 ]
机构：
[1] No Jiaotong Univ, Dept Elect Engn, Beijing 100044, Peoples R China
来源：
2002 IEEE REGION 10 CONFERENCE ON COMPUTERS, COMMUNICATIONS, CONTROL AND POWER ENGINEERING, VOLS I-III, PROCEEDINGS | 2002年
关键词：
grounding rod; impulse resistance; ground potential rise;
D O I：
暂无
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
A simplified method is,:proposed for calculating the impulse resistance of vertical grounding rods. The analytic formula is first derived to determine the low current resistance and then the calculation procedure is developed to estimate the impulse resistance. In the procedure, a nonlinear relationship is introduced to characterize the electric field and current density in the ionization zone surrounding the grounding rod. The effective radius of the grounding rod is evaluated according to the nonlinear relationship. The impulse resistance is calculated by substituting the effective radius into the analytic formula of the low current resistance. Finally, a comparison is made between calculated and measured results in confirmation of the validity of the proposed method.
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页码：1881 / 1884
页数：4
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