A study of human safety against lightning considering the grounding system and the evaluation of the associated parameters

Gazzana, Daniel S.; Bretãs, Arturo S.; Dias, Guilherme A. D.; Tello, Marcos; Thomas, Dave; Christopoulos, C.

doi:10.1016/j.epsr.2014.03.015

Cited by 12 publications

(10 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The touch or contact voltage is calculated by the use of the human body model given in Fig. The corresponding currents passing through the heart are illustrated in Figures 6(a The obtained results are in agreement with those that were reached in reference [21], and the differences are due to the fact that in this article the study was done in the case of two-layer soils and that the ionization state in the soil was considered.…”

Section: A the Impact Of Soil Ionization On The Step And Touch Potent...supporting

confidence: 80%

“…Therefore, the modeling process is the only method for conducting such studies. In any case, it is possible to compare the results obtained with that reported by others [21], [31][32][33]; especially those who used the same model of human representation [21]. The contact potentials with negative and positive reflection factors for different wave peaks considering soil ionization are given in Figures 14(a The corresponding currents passing through the heart are illustrated in Figures 15(a By comparing the results obtained in this study with those obtained in a reference, it is found an agreement in the case of touch voltage.…”

Section: The Influence Of the Wave Peaks On The Current Passing Throu...mentioning

confidence: 77%

“…The human body can be simulated by a combination of resistive and capacitive elements. Simplified simulations are carried out by many researchers [21][22][23][24][25][26][27]; one of these is shown in Fig. 2 [21].…”

Section: Human Body Simulationmentioning

confidence: 99%

“…Simplified simulations are carried out by many researchers [21][22][23][24][25][26][27]; one of these is shown in Fig. 2 [21]. Some adjustments have to be made for the evaluation of the electric current passing through the heart.…”

Section: Human Body Simulationmentioning

confidence: 99%

See 3 more Smart Citations

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

et al. 2023

View full text Add to dashboard Cite

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.

show abstract

Section: A the Impact Of Soil Ionization On The Step And Touch Potent...supporting

confidence: 80%

Section: The Influence Of the Wave Peaks On The Current Passing Throu...mentioning

confidence: 77%

Section: Human Body Simulationmentioning

confidence: 99%

Section: Human Body Simulationmentioning

confidence: 99%

See 2 more Smart Citations

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

et al. 2023

View full text Add to dashboard Cite

show abstract

“…The diameter of flexible graphite composite grounding material is generally between 22mm and 40mm. Larger grounding electrode diameter can increase the effective current dissipation area [7]. However, when using the complete similarity theory to conduct the grounding simulation test of grounding material, the similarity terms of grounding electrode diameter and grounding electrode resistivity cannot be scaled down completely.…”

Section: Introductionmentioning

confidence: 99%

RETRACTED ARTICLE: Structure optimization and preparation of power system grounding grid based on similarity data analysis algorithm

Huang

Jeon

et al. 2022

Int J Adv Manuf Technol

View full text Add to dashboard Cite

The grounding grid of power equipment is the most basic overvoltage protection device for the power system. Before the design and construction of the power grounding grid, the power system generally uses a scaled-down model to verify the characteristics of the grounding grid. As the types and structures of grounding materials become more and more complex, there are one or more similar items in the grounding simulation test that cannot be scaled down. This paper takes the similarity test of a new type of grounding material-flexible graphite composite grounding material as an example. Firstly, the complete similarity theory of grounding simulation test is deduced. Secondly, the source of similar distortion items is analyzed. Then, the distortion error of different similar items is analyzed. Finally, the distortion similarity test of the flexible graphite composite grounding material is taken as an example to verify the test error influence of the distortion similarity item of the grounding simulation. The research results of this paper can provide reference for grounding simulation test, and at the same time, it can be applied to similar tests in other fields.

show abstract

Lightning grounding system of a tall-mast for human safety

Pantoja

Román

Amórtegui

et al. 2017

Electric Power Systems Research

View full text Add to dashboard Cite

A study of human safety against lightning considering the grounding system and the evaluation of the associated parameters

Cited by 12 publications

References 5 publications

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

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

RETRACTED ARTICLE: Structure optimization and preparation of power system grounding grid based on similarity data analysis algorithm

Lightning grounding system of a tall-mast for human safety

Contact Info

Product

Resources

About