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http://dx.doi.org/10.5207/JIEIE.2006.20.4.072

Effects of the Length of Down Conductors on Transient Ground Impedances  

Lee, Bok-Hee (인하대학교 전자전기공학부)
Lee, Su-Bong (인하대학교 대학원 전기공학과)
Jeong, Dong-Cheol ((주)한진중공업)
Publication Information
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers / v.20, no.4, 2006 , pp. 72-77 More about this Journal
Abstract
This paper presents the transient impedance behaviors according to the length of down conductors of grounding systems to lightning impulse currents. The potential rise and effective impulse ground impedance of the deeply-driven ground rod and grounding grid subjected to the impulse currents were measured and analyzed as a function of the rise time of impulse currents and lengths of down conductor. The transient ground impedances strongly depend on the configuration and size of grounding electrodes, the waveform of impulse currents and the length of down conductors, and the installation methods reducing the inductance of down conductors are an important factor to decrease the transient ground impedances.
Keywords
Down conductor; Impulse ground impedance; Impulse current; Ground rod; Grounding grid;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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