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In this paper the behavior of an earthing system when a 100 kA, 10/350 lightning current is applied to a grounded mast is investigated. The numerical calculations were performed using the transient solver of CST Microwave Studio, a finite technique based computer program. CST was used to calculate induced step and touch voltages in the mast under grounded with and without a protecting fence or enclosure...
This paper aims at contributing to the study of grounding systems behavior due to direct lightning currents striking rural distribution lines located in high flash density areas. The high current density, from direct flashes, causes soil ionization phenomenon in grounding systems. In order to investigate the ionization phenomenon under various grounding conditions, impulse tests were performed on...
The study was accomplished in the transmission line (LT) 138 kV Barreiras - Rio Grande, placed at the Bahia west. This study shows a practical and well happened case, involving necessary stages for decrease the number turn off fortuitous in LT 138 kV Barreiras-Rio Grande.
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