| Title |
Characteristics of Transient Grounding Impedances of Counterpoises Relevant to the Injected Point of Impulse Currents |
| Authors |
Feng Li ; Dong-Cheol Jeong ; Jong-Ho Kim ; Jae-Duk Yoo ; Dong-Kyu Kim ; Bok-Hee Lee |
| DOI |
http://dx.doi.org/10.5207/JIEIE.2010.24.5.062 |
| Keywords |
Impulse Current ; Transient Grounding Impedances ; Conventional Grounding Impedances ; Soil Resistivity ; Counterpoises |
| Abstract |
This paper presents the dependances of transient grounding impedances of counterpoises on the soil structures and the injected point of impulse currents. The transient and conventional grounding impedances of the 25 and 50[m] counterpoises buried in the soil with different resistivity were measured and analyzed as a function of the rise time of impulse currents. As a result, the transient grounding impedances give an inductive behavior, and the trend of the conventional grounding impedances is similar to that of the transient grounding impedances. The ground resistance of counterpoises is irrespective to the injected of impulse current, but the transient and conventional grounding impedances in a short time range especially depend on the soil resistivity and position of the injected point of impulse currents. |