Response of Grounding Electrodes to Impulsive Currents: An Experimental Evaluation
Response of Grounding Electrodes to Impulsive Currents: An Experimental Evaluation
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DOI：
10.1109/temc.2008.2008396
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发表时间：
2009-02
影响因子：
2.1
通讯作者：
S. Visacro;G. Rosado
中科院分区：
文献类型：
--
作者：
S. Visacro;G. Rosado
提出了接地电极瞬态行为的实验结果，以阐明接地对雷电电流响应的基本方面。结果表明，对于快速电流波，短电极的冲击接地阻抗ZP值小于其低频电阻R LF ，而长度大于有效长度的电极的电阻值小于冲击阻抗。实验中发现的 ZP/R LF 比值低于对短于有效长度的电极进行数值模拟所得的值。
Experimental results for the transient behavior of grounding electrodes are presented to clarify fundamental aspects of the grounding response to lightning currents. It is shown that for fast current waves, the value of impulsive grounding impedance ZP of short electrodes is smaller than its low-frequency resistance R LF while electrodes longer than the effective length have a resistance value smaller than impulsive impedance. The values found for the ratio ZP/R LF in the experiments are lower than those resulting from numerical simulation for electrodes shorter than the effective length.