Studying Direct Lightning Stroke Impact on Human Safety near HVTL Towers Considering Two Layer Soils and Ionization Influence

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Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2023-01-10
Major/Subject
Mcode
Degree programme
Language
en
Pages
12
5019-5030
Series
IEEE Access, Volume 11
Abstract
A lightning strike is considered one of the most risky natural phenomena that can lead to human harmful and the surrounding soil layers. To tackle this issue, this article investigates the influence of direct lightning characteristics in terms of human body safety. Specifically, such investigation is carried out on the effect of resistivities of two-layer soils on human safety when lightning stroke hits the towers of the high voltage transmission lines (HVTLs). The merit of the proposed study is that the soil ionization phenomenon is taken into consideration. Further, the study focuses on the current passing through the human heart, when step and touch (contact) voltages are generated by grounding potential rise, caused by direct lightning strikes transmission tower and the produced potential rise that a person could be exposed. Also, studying the effects of peak current and time of lightning strokes are investigated. Additionally, the paper presents the effect of different reflection factors on human safety.For validation purposes, the ATP program is used in the simulation of the grounding system as well as the human body model. Numerous simulations were accomplished in order to examine the behavior of the current passing through with the human heart. Based on the simulation results, it was concluded that the soil characteristics have superior influences on the contact and step potentials and, accordingly, the survival threshold.
Description
Publisher Copyright: Author
Keywords
ATP program, Electric potential, Electrodes, Grounding, High voltage transmission lines, High-voltage techniques, Human body safety, Human factors, Human heart, Ionization, Lightning, Lightning strokes, non-homogenous soil, Poles and towers, Power transmission lines, Safety, Soil ionization, Soil moisture
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Citation
Gouda , O E , El Dein , A Z , Omar , S Y , Darwish , M M F & Lehtonen , M 2023 , ' Studying Direct Lightning Stroke Impact on Human Safety near HVTL Towers Considering Two Layer Soils and Ionization Influence ' , IEEE Access , vol. 11 , pp. 5019-5030 . https://doi.org/10.1109/ACCESS.2023.3235874