Earthing grid designs for heterogeneous soil structures in hilly regions using current simulation method

Mondal, Debojyoti; Dey, Sumanta; Pradhan, A. K.; Das, Santanu

doi:10.1049/iet-gtd.2017.1404

Cited by 3 publications

(4 citation statements)

References 18 publications

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“…Another research used the finite element method to calculate ground resistance, step potential, and touch potential by modeling the grounding system with different shapes in multilayer soil [24]. Others used the simplest case of the current simulation method (point source) to model the earthing system and calculate the ground resistance, mesh voltage, and step potential in multilayer soil [25]. This work was verified with experimental measurements [13,26].…”

Section: Introductionmentioning

confidence: 82%

Ground Resistance Estimation for a DC Converter Station: Theory versus Experiment

Akef,

El-Morshedy,

Samy

et al. 2024

Energies

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This paper is aimed at proposing a calculation model for the ground resistance of a grounding scheme servicing a high-voltage direct-current converter station. The method is based on the equivalence of current conduction and electric field from the grounding scheme through the surrounding medium. The grounding scheme is composed of three concentric ring electrodes supported by two horizontal conductors and eight vertical rods. The calculated ground resistance is 4.8 Ω against the experimental value of 5 Ω with an error of 4.2%. The calculated ground resistance value agrees reasonably well with that of 4.7 Ω as obtained using CYMGRD software (version 7.0). The calculated surface-potential values over the ground surface agreed reasonably well with those measured experimentally, with an average deviation not exceeding 6.5%. This study is designed to investigate how ground resistance is decreased by the increase in the scheme parameters, including the rods’ diameter and length, as well as the radius of the inner and outer rings. The dependency of the ground resistance on the soil type is also investigated.

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Section: Introductionmentioning

confidence: 82%

Ground Resistance Estimation for a DC Converter Station: Theory versus Experiment

Akef,

El-Morshedy,

Samy

et al. 2024

Energies

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“…Earthing grid designs for heterogeneous soil structures in hilly regions using current simulation method is reported by Mondal et al [9] In this research, values for grid resistance, step and mesh voltage of the grid designs on multilayer and heterogeneous soil in hilly region by applying current simulation method. Wang et al [10] Pan revealed an improved method for measuring grounding resistance of transport tower that intend to flow the lightning current to the earth through the tower grounding device based on principle of the clamp meter method when a tower has a lightning strike.…”

Section: Literature Review Of Earthing Systemmentioning

confidence: 94%

Effective earthing system of electrical power engineering department using optimal electrodes

Myint¹,

Hla²,

Tun³

2020

IJATEE

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Earthing is the most important part of an electrical installation that is used to divert high currents to the earth during normal and fault conditions. Department of electrical power engineering department is chosen as a case study because it has office room and practical lab for first year students. The objectives of this research are to prevent from electric shock for creating a reliable environment and workplace that student and staffs perform safely their work and to have an effective earthing system at the department. At the time of the fault, current from the equipment flows through the earth grid of the earth and then protect them from the fault current. The earth mat conductors rise in the voltage which is equal to the multiplication of earthing resistance of the earth mat and ground fault current. The assembly of contacts is defined as earthing.*Author for correspondence Electrical connection means the metallic conductors linking the parts of the installation with the earthing. Thus, earthing system is defined as the combination of the earthing and earthing connection together. Earthing systems are essentially needed for power generating substations, central offices, and communication tower sites.According to the earthing of two non-current carrying parts of the electrical system, earthing can be categorized into neutral earthing and equipment earthing. In the former earthing, the neutral of the system which has star winding is directly affixed to the earth by using the Galvanised Iron wire. This earthing is also specified the system earthing that is established in the generator, transformer, motor etc. The latter earthing is set up with the electrical equipment. If any fault occurs in the apparatus, the fault current will flow to the earth with the help of wire. Earthing can be provided by electrically joining the respective elements in the installation to some system of electrical conductors or electrodes that are

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“…18 A soil with little resistivity is exceptionally corrosive, and dry soils possess high resistivity value, and if the soil resistivity is high, earth resistance of the electrode will also be high. Soil condition: The resistivity of soils is dependent on the soil conditions.…”

Section: Soil Resistivitymentioning

confidence: 99%

“…Study shows that every earth electrode performance depends on the soil. 18 A soil with little resistivity is exceptionally corrosive, and dry soils possess high resistivity value, and if the soil resistivity is high, earth resistance of the electrode will also be high. 19 ii.…”

Section: Soil Resistivitymentioning

confidence: 99%

Assessment and prediction of earthing resistance in domestic installation

Nti

Appiah

Nyarko‐Boateng

2020

Engineering Reports

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Before the introduction of the Ghana Electrical Wiring Regulations 2012 (L.I. 2008), most residential wiring within Sunyani Municipality was carried out by unlicensed artisans. This situation imposed a need to investigate the effectiveness of the earthing systems carried in the Sunyani municipality. Therefore, the current study sought to evaluate earthing resistance effectiveness within the Sunyani Municipality by measuring the earthing resistance of 1004 homes with an earthing resistance tester from January 2016 to April 2018. Again, we predict future resistance based on measured values. Out of 1004 buildings surveyed, 834 had an earthing system in place. Twenty‐eight buildings, recorded an earth electrode test within 0.0 to 10 Ω representing 3.36%. A high percentage (96.64%) had their earth electrode resistance above the acceptable value by the Energy Commission of Ghana. The results revealed that the overall effectiveness of earthing in the domestic installation in Sunyani Municipality is below average compared with Ghana Energy Commission benchmark.

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Earthing grid designs for heterogeneous soil structures in hilly regions using current simulation method

Cited by 3 publications

References 18 publications

Ground Resistance Estimation for a DC Converter Station: Theory versus Experiment

Ground Resistance Estimation for a DC Converter Station: Theory versus Experiment

Effective earthing system of electrical power engineering department using optimal electrodes

Assessment and prediction of earthing resistance in domestic installation

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