International Academic Journal of Science and Engineering

  • ISSN 2454-3896

The Influences of Soil Ionization in the Grounding System and Corona Phenomena on the Injection Lightning Current of 1000 KV UHV Transmission Line

Ebadollah Amouzad Mahdiraji and Nabiollah Ramezani

Abstract: This paper investigates the 1000 KV UHV transmission line under the 100 KA lightning impulse on the overhead guard wire with considering the corona phenomena and soil ionization in high frequency grounding system. In this study, four cases of transient electromagnetic current status of the transmission line power system have been analyzed with EMTP-RV software. The results of this procedure depict that the soil ionization in the absence of the corona phenomenon can be caused an attenuation of the lightning current waves. But with considering the corona phenomena and Soil ionization, all together, this reduction of the resultant waves propagation from a lightning strike on a 1000 KV UHV transmission line is not visible due to high charging of the corona phenomena

Keywords: Soil ionization, corona phenomena, injection lightning Current, electromagnetic transients

Page: 39-50

DOI: 10.9756/IAJSE/V6I1/1910004

Volume 6, Issue 1, 2019