Results 21 to 30 of about 9,424 (256)

Analysis on frequency and impulse characteristics of grounding grid

open access: yesThe Journal of Engineering, 2019
Studying the frequency and impulse characteristics of grounding grids is of great reference value for the optimal design of the substation. As the frequency increasing, the variation trend of the grounding resistance under different conditions is not ...
Mengmeng Su   +3 more
doaj   +1 more source

Effect of grounding grid of power transmission line on buried pipeline under short circuit fault

open access: yesYou-qi chuyun, 2021
In order to study the electromagnetic interference of the short-circuit current of grounding point when power transmission line is in fault operation, a model for grounding grid of transmission line towers and buried pipelines was established with the ...
Shaojie WANG   +4 more
doaj   +1 more source

Parameterising the grounding line in flow-line ice sheet models [PDF]

open access: yesThe Cryosphere, 2010
Realistic predictions of the behaviour of marine ice sheets require that models are able to robustly simulate grounding line migration. Fixed-grid ice sheet models have been shown to exhibit inconsistent and hence unreliable grounding line migration ...
R. M. Gladstone   +2 more
doaj   +1 more source

High current field test of impulse transient characteristics of substation grounding grid

open access: yesThe Journal of Engineering, 2018
It is significant to research the impulse characteristics of substation grounding grid for its optimal design and safe and stable operation. In order to obtain the impulse transient characteristics of substation grounding grid under lightning impulse ...
Xuefang Tong, Xiaohui Dong, Bo Tan
doaj   +1 more source

Calculation of ground potential and magnetic bias current of power grid near the grounding electrode of Chen’an Village

open access: yesZhejiang dianli, 2022
In view of the high operating current of ±800 kV UHVDC, the influence of earth current at the grounding electrode on the magnetic bias of transformers and the treatment has become a research topic.
HU Jingen   +4 more
doaj   +1 more source

Analysis of the effect of explosion grounding electrode on grounding resistance reduction

open access: yesThe Journal of Engineering, 2019
Developing cracks in the soil by means of explosions in the holes, as is called the explosion grounding electrode in this study, is a very effective way to reduce the grounding resistance in the area with high resistivity soil.
Yongli Wang   +4 more
doaj   +1 more source

Grounding Grid Fault Diagnosis With Emphasis on Substation Electromagnetic Interference

open access: yesIEEE Access, 2022
Grounding grid fault diagnosis is essential for the safe operation of a substation. However, the substation vicinity is highly electromagnetic. Therefore, the electromagnetic-based fault diagnosis is vulnerable to electromagnetic interference (EMI). This
Aamir Qamar   +3 more
doaj   +1 more source

Characteristics of Two Ground Grid Potentials After a Triggered Lightning Stroke

open access: yesIEEE 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

Relationship between radar reflectivity thresholds and very low frequency/low frequency total lightning for thunderstorm identification

open access: yesHigh Voltage
To improve our knowledge of the spatio‐temporal correspondence between radar reflectivity and VLF/LF total lightning data, this paper proposes indexes to quantify the horizontal distribution and temporal evolution characteristics between radar composite ...
Yijun Huang   +5 more
doaj   +1 more source

Comparing the Effect of Semi‐Immersive Virtual Reality, Computerized Cognitive Training, and Traditional Rehabilitation on Cognitive Function in Multiple Sclerosis: A Randomized Clinical Trial

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Cognitive impairment is a common non‐motor symptom in Multiple Sclerosis (MS), negatively affecting autonomy and Quality of Life (QoL). Innovative rehabilitation strategies, such as semi‐immersive virtual reality (VR) and computerized cognitive training (CCT), may offer advantages over traditional cognitive rehabilitation (TCR ...
Maria Grazia Maggio   +8 more
wiley   +1 more source

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