**7. Conclusions**

Lightning induced-voltages are usually computed considering only the low-frequency grounding resistance when one considers the grounding system of the distribution tower. This work presented the impact of two different models for the grounding system of distribution line towers on the lightning-induced voltage on the phase insulators computation. The comparison between the low-frequency grounding resistance (*RLF*) and the equivalent circuit corresponding to the wideband grounding frequency response (*Z*(*ω*)) shows that considering only *RLF* may lead to non-negligible underestimation of the maximum induced voltage. This aspect is more evident for subsequent strokes in the case of close stroke locations and low soil conductivities, which represents, by the way, one of the configurations when the lightning-induced voltages on a distribution line are high and potentially dangerous. On the other hand, for high soil conductivity, the differences between the two models are negligible. Future work will extend this analysis to the evaluation of a distribution line lightning performance to check whether this trend is also confirmed when dealing with statistical calculations. Additionally, in future works it is expected to include the coupling between the lightning channel and the grounding electrodes, similarly, as presented in [58].

**Author Contributions:** Conceptualization, D.M. and R.A.R.d.M.; methodology, D.M.; software, R.P. and R.A.R.d.M.; validation, D.M. and M.A.d.O.S.; formal analysis, D.M. and M.A.d.O.S.; writing— original draft preparation, D.M. and R.A.R.d.M.; writing—review and editing, R.P. and M.A.d.O.S.; All authors have read and agreed to the published version of the manuscript.

**Funding:** This research received no external funding.

**Institutional Review Board Statement:** Not applicable.

**Informed Consent Statement:** Not applicable.

**Conflicts of Interest:** The authors declare no conflict of interest.
