Optimization of Grounding Grids Design for a Square-Shaped Mesh

Sodre, Rayane Pereira; Pereira, Beatriz Lopes; Sidrim, Luna Leite; Almeida, José Felipe; Sobrinho, Carlos Leonidas Silva Souza

doi:10.1109/tla.2018.8291465

Cited by 3 publications

(1 citation statement)

References 9 publications

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“…Este artículo apunta a presentar casos de estudio sobre los problemas introducidos por la presencia de estructuras metálicas y los sistemas de protección asociados, entre otros, en la transferencia de gradientes de potencial [GPG] en GS pasivos. Los procedimientos de diseño descritos en los estándares relacionados con los GS de subestaciones eléctricas, en áreas urbanas y estaciones de petróleo, permiten el cálculo de niveles seguros de tensiones de paso y de contacto dentro del área de la subestación, pero los GPG adyacentes no son tomados en cuenta [18], [19], [20], [21], [22], [23], [24].…”

Section: Introductionunclassified

Considerations in the design of electrical substations, including the effect of potential gradient on surrounding metallic structures

Chiliquinga

Robles

2022

ings

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For designing and studying an electrical substation grounding system [GS], a simple remote substation is considered according to the safety procedures indicated in the IEEE 80 Standard. Buried metallic materials or nearby metallic structures permanently endanger human life when electrical faults occur. Scenarios related to the design of electrical substations that consider the transfer of electrical potentials that can occur between the GS and buried metallic materials in their vicinity are presented, the behavior of potential transfer is evaluated, values of transferred voltages are calculated, and the main variables that influence the transferred voltage levels are identified. The simulations are performed with the CYMGRD software specific for GS calculations. Its analysis generates real results in the potential transfer that must be considered by the GS design engineer, which enables to avoid designing isolated substations without taking into account existing elements that may affect the substation surroundings.

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Section: Introductionunclassified

Considerations in the design of electrical substations, including the effect of potential gradient on surrounding metallic structures

Chiliquinga

Robles

2022

ings

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Design of Earthing Grid using ETAP

Nandhini

Kumar

Iruthayarajan

2022

2022 6th International Conference on Trends in Electronics and Informatics (ICOEI)

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Effects of lightning impulse front time on substation grounding system performance

Adnan

Malek

Din³

et al. 2020

IJEECS

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<table width="593" border="1" cellspacing="0" cellpadding="0"><tbody><tr><td valign="top" width="387"><p>The role of the grounding system in the safety of the power system and protection of personnel is obvious during an unexpected short circuit or lightning discharge at the substation. The aim of this work is to analyze the effects of several parameters: lightning impulse front time, soil resistivity and types of grid materials on the grounding system of the Substation. The ground potential rise (GPR), touch voltage and step voltage of a 50 m x 60 m grounding grid buried at a depth of 0.5 m were computed using CDEGS when injected by impulse with different front times. Results show that the shorter the front time of lightning impulse waveform, the higher the value of GPR, touch voltage and step voltage. Meanwhile, when the value of soil resistivity is increased, the value of GPR, touch voltage and step voltage is also increased. Lastly, different types of grid conductor materials give different values of GPR, touch voltage and step voltage. However, it can be said that the differences are too small to be of any significance.</p><p> </p></td></tr></tbody></table>

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Optimization of Grounding Grids Design for a Square-Shaped Mesh

Cited by 3 publications

References 9 publications

Considerations in the design of electrical substations, including the effect of potential gradient on surrounding metallic structures

Considerations in the design of electrical substations, including the effect of potential gradient on surrounding metallic structures

Design of Earthing Grid using ETAP

Effects of lightning impulse front time on substation grounding system performance

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