Geoarchaeological Investigation of Abydos Area Using Land Magnetic and GPR Techniques, El-Balyana, Sohag, Egypt [PDF]
Applied Sciences, 2022 Abydos Temple is one of Egypt’s most significant sites which has a long history that dates back to the ancient monarchy and continued until the coming of Islam and also served as one of Egypt’s most significant ancient royal and high-ranking official ...
Abdelbaset M. Abudeif +3 more
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Diagnostic analysis and protective measures of transient ground potential rise in a 1000 kv UHV substation [PDF]
The Journal of Engineering, 2019 With the continuous expansion of power grid capacity and growth of voltage levels, the transient ground potential rise (GPR) caused by the switchgear operation has become great threaten to the safety of the grid.
Fubin Pang +3 more
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Transient analysis of power transmission towers above lossy ground with frequency dependent electrical parameters considering the water content of soil [PDF]
e-Prime: Advances in Electrical Engineering, Electronics and Energy, 2023 Adequate soil modeling is fundamental to assessing the grounding impedance of the grounding system and the transient responses in power systems. This paper aims to investigate three soil models with electrical parameters varying with frequency and water ...
Walter Luiz Manzi de Azevedo +4 more
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Harmonic grounding impedance of rods in horizontally stratified soils using ABCD-matrix approach [PDF]
e-Prime: Advances in Electrical Engineering, Electronics and Energy, 2023 Grounding electrodes play a fundamental role in the operation of power systems. In this context, precise computation of grounding impedance must consider the frequency-dependence of the soil parameters and the ground organized in stratified layers of ...
Anderson R.J. de Araújo +4 more
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Numerical Investigation of the Use of Electrically Conductive Concrete-Encased Electrodes as Potential Replacement for Substation Grounding Systems [PDF]
Energies, 2023 This paper presents a numerical investigation regarding the possibility of using electrically conductive concrete (ECON) combined with concrete-encased electrode (CEE) technology to develop new substation grounding systems (SGSs) called ECON-EE as a ...
Mouna Daadaa +3 more
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IET Science, Measurement & Technology, 2021 Due to the impedance characteristic of conductor, the ground potential rise is different within grounding grid when impulse current is injected. When staff touches objects with different GPR at the same time, the GPD will be applied to human body ...
Chun Li +5 more
doaj +1 more source
Ground Potential Rise and Transient Response of the Grounding Grid Based on the Triggered Lightning
应用气象学报, 2020 It is extremely dangerous of ground grid potentials which significantly rise when the lightning currents are flowing through the grid. A statistical analysis on 39 return-strokes, 10 M-components and the ground potential rise (GPR) caused by them based ...
Yan Xu +4 more
doaj +1 more source
Energies, 2022 Lightning is a perilous and unavoidable event of nature that presents major deleterious consequences on humans, tall structures, electrical power systems, forests, etc. Though several research studies have been carried out to analyse the sufficiency of a
Srisailam Sreedhar +1 more
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Characteristics of Two Ground Grid Potentials After a Triggered Lightning Stroke
IEEE Access, 2020 It has been determined that the discharge of lightning current to ground through grounding grid results in high potential at the grounding grid and other nearby grounding grids, which is very destructive.
Xu Yan +5 more
doaj +1 more source
Applied Sciences, 2020 Since high voltage transmission line towers or wind turbines structures are installed in high-altitude areas, it is essential to achieve a high overvoltage protection system against direct and indirect lightning strikes collisions.
Maziyar Fakhraei +2 more
doaj +1 more source