Results 21 to 30 of about 743,825 (230)

Dead-beat circulating current suppression method of underground UPS paralleling power supply system

open access: yesGong-kuang zidonghua, 2016
In order to improve reliability of underground UPS power supply system, a dead-beat circulating current suppression method of underground UPS paralleling power supply system was put forward.
WANG Ling, WU Tao, LI Zhizhong
doaj   +1 more source

A Grid Service Infrastructure for Mobile Devices [PDF]

open access: yes, 2005
One of the visions of Grid computing is to access computational resources automatically on demand to deliver the services required with appropriate quality. Because mobile devices are now increasingly common, an infrastructure is required to allow mobile
Guan, Tao   +8 more
core   +2 more sources

The Grounding Impedance Calculation of Large Steel Grounding Grid [PDF]

open access: yes, 2012
Steel is widely used as grounding material in China. The resistivity and permeability of steel are higher than those of copper. If a grounding grid is very large, it is a problem for steel grounding grid to have great potential difference within the ...
Zhao, Zhang, Zhiwei, Lu
core   +1 more source

Investigation and Optimization of Grounding Grid Based on Lightning Response by Using ATP-EMTP and Genetic Algorithm

open access: yesComplexity, 2018
A large number of electromagnetic transient studies have been analyzed for finding the overvoltage behavior of power system. A grounding grid of power system is so important for reducing the effect of overvoltage phenomena during a short-circuit event ...
Saeid Gholami Farkoush   +7 more
doaj   +1 more source

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

Transient impedance of grounding system with impulse superimposed sinewave

open access: yesENP Engineering Science Journal, 2021
Investigating the transient performance of grounding systems subject to lightning (impulse or impulse superimposed sinewave) is valuable for protecting the power system and maintaining the system operation.
Sherif Ghoneim   +2 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

A classification of emerging and traditional grid systems [PDF]

open access: yes, 2008
The grid has evolved in numerous distinct phases. It started in the early ’90s as a model of metacomputing in which supercomputers share resources; subsequently, researchers added the ability to share data.
Li, M, Kurdi, H, Al-Raweshidy, H
core   +6 more sources

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

Grounding Concepts: the Problem of Composition [PDF]

open access: yes, 2011
In a recent book C.S. Jenkins proposes a theory of arithmetical knowledge which reconciles realism about arithmetic with the a priori character of our knowledge of it.
Forrai, Gábor
core   +2 more sources

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