Optimal design and development of software for design of substation grounding system

Vyas, Kaustubh A.; Jamnani, Jitendra G.

doi:10.1109/nuicone.2011.6153288

Cited by 9 publications

(4 citation statements)

References 4 publications

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“…Fault current division factor is the ratio of grid current flowed between the grounding grids to symmetrical fault current that represented by a factor was defined as (7); (7) The maximum grid current was defined as (8) as shown in the following;…”

Section: ) Grid Maximum Currentmentioning

confidence: 99%

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Design of a Substation Grounding System for Fast Front Overvoltage

2019

IJRTE

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Grounding studies allow an optimized design of grounding system to provide protection for electrical components and personnel at substation. The design of grounding system needs to comply with IEEE Standard 80:2013. Field work is conducted with Fall-of-Potential method and Wenner’s method to perform measurement soil test. Data from measurement test is used to develop two-layer soil model by using Sunde’s graphical method. Calculation for tolerable step voltage and touch voltage are under 50kg body weight condition. Based on the findings, calculated values for tolerable step voltage and touch voltage are higher than calculated values for mesh voltage and touch voltage. The percentage of error is 7% when computed values and calculated values for tolerable voltages are compared. Higher tolerable voltages minimise the risk of getting electrical shock to any individual presents at substation during fault or lightning strike occurs. However, there is limitation in this paper related to software licensing where full simulation with grounding software required full access.

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Section: ) Grid Maximum Currentmentioning

confidence: 99%

“…Soil modelling is done by either inspection of resistivity measurement or computer algorithm. Sunde's graphical method is the first method in soil modelling and it still be applicable for two-layer soil model without [7]. Grounding system is relatively an interesting topic especially when comes to design part.…”

Section: Introductionmentioning

confidence: 99%

Design of a Substation Grounding System for Fast Front Overvoltage

2019

IJRTE

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“…Hence, design analysis of a substation ground grid system should address the issue of deducing the soil resistivity, maximum GPR, touch and step voltages computation. Being the major component of the power system grounding structures, ground grids should be designed to ensure the safety of the overall grounding system and should also be cost effective [2]. [1] There are quite a few studies in the area of optimal design of substation grounding system for very high fault current.…”

Section: Introductionmentioning

confidence: 99%

“…[1] There are quite a few studies in the area of optimal design of substation grounding system for very high fault current. In [2], the performance of substation grounding system was expounded with regards to the different grounding parameters. This was done to ascertain the most effective parameters needed to achieve cost-effective and safe design.…”

Section: Introductionmentioning

confidence: 99%

Optimal design analysis of substation ground grid mesh

Akhikpemelo

2023

Nig. J. Tech.

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Substations are grounded by means of earth-embedded electrodes in order to provide safety during normal or fault conditions. Electric substations are effectively grounded to guarantee the proper operation of electrical devices, minimize the likelihood of flash-over during transient conditions as well as dispel lightning strokes. A structure is termed grounded if it is electrically bonded to earth-embedded metallic frames. The earth-embedded metallic frames provide a conducting pathway of electricity to the earth and it is called a ground grid system. Substation ground grid mesh is comprised of vertical and horizontal conductors as well as vertical rods buried beneath the substation ground. Electric current flow through the human body is hazardous. Therefore, ground grid systems should be designed such that the likely electric body current in an operator or passer-by should not exceed the standard defined limits under any foreseeable harmful circumstances and as well provide protection of equipment. The objective of this study is to determine substation, safe ground grid system parameters as well as the cost-effectiveness of designing substation ground grids by comparing the IEEE Std. 80-2000/2013 and the Finite Element Method (FEM). ETAP 16.0 Power Tool is employed in carrying out this analysis. The substation expected maximum short circuit current is stated. The design analysis using both methods is presented separately and suggestions are made with reference to the most cost effective and safest method for the effective designing of the substation ground grid system.

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