Inception Voltage of Burst Pulses, Onset Streamers, and Positive Glow in Short Rod-to-Plane Gaps

El-Hawary, Hadeer Hassan; Abdel‐Salam, M.; Hashem, Azza Abdel-Rahman; Turky, A

doi:10.1109/tps.2021.3079212

Cited by 6 publications

(1 citation statement)

References 23 publications

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“…For each simulation charge, a boundary point is selected on the electrode surface. A set of boundary points are located on each rod and conductor being modeled as finite-lines charges extending along their axes [10,42].…”

Section: Simulation Techniquementioning

confidence: 99%

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: Simulation Techniquementioning

confidence: 99%