Results 1 to 10 of about 140,545 (203)

Correlation between Ground Motion Parameters and Displacement Demands of Mid-Rise RC Buildings on Soft Soils Considering Soil-Structure-Interaction

open access: yesBuildings, 2021
This paper investigates the correlation between ground motion parameters and displacement demands of mid-rise RC frame buildings on soft soils considering the soil-structure interaction.
Muhammet Kamal, Mehmet Inel
doaj   +4 more sources

Ground Potential Rise and Transient Response of the Grounding Grid Based on the Triggered Lightning

open access: yes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   +2 more sources

Diagnostic analysis and protective measures of transient ground potential rise in a 1000 kv UHV substation

open access: yesThe 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
doaj   +2 more sources

Ground State for the Schrödinger Operator with the Weighted Hardy Potential [PDF]

open access: yesInternational Journal of Differential Equations, 2011
We establish the existence of ground states on ℝ𝑁 for the Laplace operator involving the Hardy-type potential. This gives rise to the existence of the principal eigenfunctions for the Laplace operator involving weighted Hardy potentials. We also obtain a
J. Chabrowski, K. Tintarev
doaj   +2 more sources

Effects of sea-level rise on physiological ecology of populations of a ground-dwelling ant. [PDF]

open access: yesPLoS ONE, 2020
INTRODUCTION:Sea-level rise is a consequence of climate change that can impact the ecological and physiological changes of coastal, ground-dwelling species.
L M Hooper-Bùi   +6 more
doaj   +2 more sources

Comparison of Grounding Grid Parameters Between Copper and Galvanized Flat Steel [PDF]

open access: yesE3S Web of Conferences, 2021
In the intelligent substation, the shell of the secondary equipment is connected to the ground grid locally. When the short circuit fault current is injected into the grounding grid to cause the ground potential rise, the potential difference between the
Yu Yue   +5 more
doaj   +1 more source

Study on safety operation of medium voltage distribution network [PDF]

open access: yesE3S Web of Conferences, 2021
Aiming at the problem of safe operation in the medium voltage distribution network with neutral point grounding through small resistance, the distribution network model was built, and on this basis, MW-level photovoltaic (PV) system, doubly fed Induction
Chen Xiaofang   +3 more
doaj   +1 more source

Transient analysis of power transmission towers above lossy ground with frequency dependent electrical parameters considering the water content of soil

open access: yese-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
doaj   +1 more source

A New Grounding Resistance Reduction Method for Wind Turbines by Grounding Grid Connection in Limited Areas

open access: yesFrontiers in Energy Research, 2022
Restricted by cultivated land vegetation, road construction, and land acquisition compensation costs, the grounding electrode extension method is not applicable for grounding resistance reduction of some wind turbines in limited areas.
Yuanchao Hu   +8 more
doaj   +1 more source

Design, Modeling, and Analysis of IEEE Std 80 Earth Grid Design Refinement Methods Using ETAP

open access: yesApplied Sciences, 2023
The design of a compliant, safe, and reliable substation earth grid is not a straightforward process; in most cases, it requires some additional measures to be taken due to various constraints that differ from environment to environment, such as soil ...
Vuyani Michael Nicholas Dladla   +2 more
doaj   +1 more source

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