Impedance, tension and electricity variables behavior facing impulse discharges for different grounding systems modeled by DTF

This document presents the analysis of impedance, tension, and electricity variables facing impulse discharges on the guard cable in a transmission line, in which we consider different grounding systems modeled in software ATP/EMTP using the Distribution and Tensioning Factors method (DTF). The methodology is divided in four stages: tower model selection, equivalent circuit for the grounding system, modeling, and simulation in ATP/EMPT. Among the multiple conclusions, it is noted that for a grounding system with a 30 m counterweight in horizontal position to a depth of 30 cm it was registered a decrease on the grounding impedance and on the induced tensions in the isolator suspension arms.