Results 21 to 30 of about 2,085,793 (277)
Journal of Electrical Systems and Information Technology, 2023 The grounding system of an electrical substation provides safety to both operator and equipment. The lightning current waveform has a major influence on the dynamic performance of ground electrodes.
Kaushal Pratap Sengar +1 more
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Analysis of Zinc Oxide (ZnO) Surge Arrester Connected to Various Ground Electrodes
Energies, 2021 This paper presents impulse tests results on a zinc oxide (ZnO) surge arrester connected to four ground electrodes, with its resistance values ranging from 17 Ω to 104 Ω.
Hanis Hamizah Hizamul-Din +1 more
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Characteristics of the Flexible Graphite Grounding Material and its Engineering Application
IEEE Access, 2019 In order to meet the requirements of corrosion resistance of the grounding material and thermal stability of the grounding material of the transmission line towers, under the condition of power frequency current and high-frequency lightning current ...
Daochun Huang +4 more
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Influence of Nonlinear Processes in Soils on the Impulse Resistance of Grounding Electrodes
Journal of Physics: Conference Series, 2021 Abstract The article presents the results of laboratory studies of nonlinear processes during the flow of pulsed currents into moistened soil from electrodes modelling grounding devices of electric power facilities. A methodology for studying the pulse parameters of grounding devices has been developed and a laboratory stand and a ...
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Energies, 2021 Ionisation can occur in the soil when high impulse currents are subjected to grounding systems. This occurrence is generated by a difference in the dielectric strength value between the soil and air voids.
Hanis Hamizah Hizamul-Din +3 more
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Mechanism Analysis and Multiphysics Validation of Lightning Attenuation in Constrained Space
IEEE Access, 2022 The problem of resistance reduction has always been the key and difficult point of lightning protection. However, the problem of reducing the grounding resistance efficiently has not been solved. A method is introduced in this paper to solve this problem
Yang Lu +3 more
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Analysis of Lightning Transient Characteristics of Short-Length Mixed MMC-MVDC Transmission System
IEEE Access, 2023 Medium voltage direct current (MVDC) transmission system are growing due to their assistive quality in conventional grid and compatibility with renewable power network. MVDC distribution links with “Mixed” overhead (OH) & underground
Muhammad Usman +2 more
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Optimization of impulse resistance reduction for tower grounding device of transmission line
Journal of Physics: Conference Series, 2020 Abstract When the lightning strikes the tower, the lightning current is discharged into the ground through the tower grounding device. The magnitude of the impulse earthed resistance of the tower grounding device determines the lightning discharge capacity of the tower. Therefore, the tower grounding device directly affects the lightning
Sixiang Chen +5 more
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Effect of impulse polarity on a new grounding device with spike rods (GDSR)
, 2020 The characterizations of grounding systems subjected to high impulse conditions are known to be dependent on the polarity, current to peak time and discharge time, as well as the electrical properties of the soil, and the grounding electrodes themselves.
Ahmad, Nurul Nadia +5 more
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A New Flexible Graphite Composite Electrical Grounding Material
Frontiers in Materials, 2022 Corrosion is an inevitable problem of metallic grounding grids. To propose an effective method avoiding the above corrosion, a new type of non-metallic grounding material was made in this paper. It is called flexible graphite composite grounding material,
Tao Huang +7 more
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