Technique for Safety Design Improvement of Grounding System by Compression Ratio Methods in Metropolitan Electricity Authority's System

Phayomhom, A.; Sirisumrannukul, Somporn; Ainsuk, B.

doi:10.1109/tdc.2018.8440233

Cited by 4 publications

(2 citation statements)

References 4 publications

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“…Results obtained from GA is compared with CYGRD software. In [9][10][11][12], the authors proposed PSO and BAT algorithm to achieve optimal unequal grid configuration among many feasible configurations. Developed a MATLAB software program to find optimal compression ratio for a given grid area and number of grid conductors.…”

Section: Nomenclature D Imentioning

confidence: 99%

Comparative Analysis of Equal and Unequal Grounding Grid Configurations by Compression Ratio and Least Square Curve Fitting Techniques

M¹,

George²

2023

Energy Engineering

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The primary aim of the power system grounding is to safeguard the person and satisfying the performance of the power system to maintain reliable operation. With equal conductor spacing grounding grid design, the distribution of the current in the grid is not uniform. Hence, unequal grid conductor span in which grid conductors are concentrated more at the periphery is safer to practice than equal spacing. This paper presents the comparative analysis of two novel techniques that create unequal spacing among the grid conductors: the least-square curve fitting technique and the compression ratio technique with equal grid configuration for both square and rectangular grids. Particle Swarm Optimization (PSO) is adopted for finding out one optimal feasible solution among many feasible solutions of equal grid configuration for both square and rectangular grids. Comparative analysis is also carried out between square and rectangular grids using the least square curve fitting technique as it results in only one unequal grid configuration. Simulation results are obtained by the MATLAB software developed. Percentage of improvement in ground potential rise, step voltage, touch voltage, and grid resistance with variation in compression ratios are plotted.

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Section: Nomenclature D Imentioning

confidence: 99%

Comparative Analysis of Equal and Unequal Grounding Grid Configurations by Compression Ratio and Least Square Curve Fitting Techniques

M¹,

George²

2023

Energy Engineering

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“…Grounding systems (GSs) are very important components of electric systems in substations and power plants, as well as in any civil, commercial, and industrial building, because they are essential for human safety [1] and equipment safeguard [2].…”

Section: Introductionmentioning

confidence: 99%

Thin Conductor Modelling Combined with a Hybrid Numerical Method to Evaluate the Transferred Potential from Isolated Grounding System

Aiello¹,

Alfonzetti²,

Rizzo³

2019

Energies

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Grounding systems are essential parts of substations and power generation stations. The evaluation of transferred potentials from an active grounding system to other passive ones or to any near conductors is an important aspect to be considered, because transferred potentials may cause serious and fatal events. Moreover, it is an intrinsic issue of the Smart Grid where the ground systems of the power and ICT systems could be close to each other. Therefore, the estimation of the transferred potential is necessary at grounding system design stage for people safety and electric components safeguard. Numerical methods are the best choice to perform a truthful estimation, especially when large and complex grounding systems have to be designed. However, this task is complicated by the “unbounded” nature of the electromagnetic field and by the presence of components of extremely different size in the analysis domain. In this paper, an efficient hybrid finite element method is applied for the accurate and fast computation of transferred earth potentials from grounding systems. Moreover, the small dimensions of the components in the analysis domain are taken into account by the use of one-dimensional finite elements inserted in the tetrahedral mesh. It is worth mentioning the additional advantage of obtaining the electric potential on the earth surface without any post-processing operation.

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Optimal Design in Distribution Substation’s Grounding System for Decreasing Touch Voltage

Puttarach

Kasirawat

Panta

et al. 2020

2020 17th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technolo

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Technique for Safety Design Improvement of Grounding System by Compression Ratio Methods in Metropolitan Electricity Authority's System

Cited by 4 publications

References 4 publications

Comparative Analysis of Equal and Unequal Grounding Grid Configurations by Compression Ratio and Least Square Curve Fitting Techniques

Comparative Analysis of Equal and Unequal Grounding Grid Configurations by Compression Ratio and Least Square Curve Fitting Techniques

Thin Conductor Modelling Combined with a Hybrid Numerical Method to Evaluate the Transferred Potential from Isolated Grounding System

Optimal Design in Distribution Substation’s Grounding System for Decreasing Touch Voltage

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