Considerations about Substation Grounding System Design

Neamt, Liviu; Bălan, Horia; Chiver, Olivian; Hotea, Alexandru

doi:10.1109/mps.2019.8759737

Cited by 2 publications

(2 citation statements)

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“…En el GS, las corrientes de falla a tierra deben ser disipadas de forma segura para retornar la tierra a sus fuentes , de manera que los dispositivos de protección puedan desconectar rápidamente la alimentación y eliminar la falla. Sin embargo, las corrientes de falla que fluyen a través de la red de tierra también lo hacen a través de otros objetos metálicos enterrados, incluyendo sistemas de puesta a tierra conectados a otras instalaciones no afectadas por las fallas [2], [3], [4], [5].…”

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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“…Several studies on the effect of lightning strikes on transmission lines, tall structures, step-voltage phenomena, grid or mesh grounding systems, and substations have been done [3][4][5][6][7][8]. However, few studies comprehensively investigate the impact of lightning strikes that may cause failure in the low-voltage electrical system.…”

Section: Introductionmentioning

confidence: 99%

Investigation and Improvement of Standard External Lightning Protection System: Industrial Case Study

et al. 2021

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In this study, the lightning protection system and grounding system of one plant of the petrochemical industry were investigated, evaluated, and improved. The methods used in this study were rolling sphere and angle protection methods. The grounding system of the building under study was modeled and simulated using ATP/EMTP (Alternative Transient Program/Electromagnetic Transient Program) software. The results show that the external lightning protection system of the prilling tower studied does not adhere to IEC 62305 and IEC 1024-1-1 standards. Moreover, the grounding configuration of the DCS building was not appropriate for protecting sensitive equipment inside. Lightning causes an enormous potential difference between lightning ground rods in the grounding system. Additionally, disabling the existing surge protective device (SPD) causes an increase in the magnitude of Ground Potential Rise at the DCS building. Improvement of the lightning protection system of the prilling tower and DCS building on Plant 1 of this petrochemical company as well as some other recommendations for improvements are proposed. This paper also shows evidence that external lightning protection, internal lightning protection, and the grounding system need to be connected to make an exemplary lightning protection system.

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Considerations about Substation Grounding System Design

Cited by 2 publications

References 1 publication

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

Investigation and Improvement of Standard External Lightning Protection System: Industrial Case Study

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