Results 1 to 10 of about 664 (264)

Tower impulse grounding resistance measurement based on multiple frequency impedance

open access: yesIET Generation, Transmission & Distribution, 2023
Tower impulse grounding resistance is important for judging the lightning protection performance of transmission lines. Therefore, it is significant to accurately measure the tower impulse grounding resistance. Existing measurement methods mainly contain
Yihua Dan   +5 more
doaj   +3 more sources

Study on Evaluation Method of Impulse Dispersion Performance of Grounding Device Using X-ray Imagining System

open access: yesEnergies, 2021
When the lightning current enters the ground through the grounding system, the impulse dispersion performance can be observed by the phenomenon of soil spark discharge, which is fundamentally determined by the nearby soil.
Xiaoyan Han   +5 more
doaj   +2 more sources

Potentials' distribution in high resistivity soil around extended grounding electrodes [PDF]

open access: yesVestnik MGTU, 2016
The potential distribution in high resistivity soil around extended grounding electrodes has been described in the paper. The high-voltage polygon has been developed for experimental investigation.
Ivonin V. V.
doaj   +2 more sources

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   +2 more sources

Investigations on the Performance of Grounding Device with Spike Rods (GDSR) with the Effects of Soil Resistivity and Configurations

open access: yesEnergies, 2020
In a recently published work, the characteristics of a new grounding device with spike rods (GDSR) with various arrangements of ground electrodes under high magnitude impulse currents (up to 16 kA), was investigated.
Abdul Wali Abdul Ali   +4 more
doaj   +2 more sources

Investigations on the Performance of Various Horizontal Ground Electrodes

open access: yesEnergies, 2021
Experimental work on grounding systems has shown that the characteristics of grounding systems under high impulse conditions are different than those obtained at steady-state conditions.
Hanis Hamizah Hizamul-Din   +4 more
doaj   +2 more sources

Effect of Ground Electrodes on the Susceptibility to Damage of Customer Premises Equipment (CPE) under Impulse Conditions

open access: yesEnergies, 2022
One of the requirements for the safe operation of customer premises equipment (CPE) is an adequate grounding system as a means to divert high fault currents to the ground.
Usman Muhammad   +3 more
doaj   +2 more sources

A critical review on soil ionisation modelling for grounding electrodes [PDF]

open access: yesArchives of Electrical Engineering, 2016
Grounding electrode resistance non-linearly changes under impulse conditions due to soil ionisation phenomenon. Several models have been proposed to model soil ionisation for grounding electrodes applications.
Mokhtari Mehrdad   +2 more
doaj   +3 more sources

A grounding method of OCS pillar foundation based on conductive concrete

open access: yes机车电传动, 2023
A grounding method of OCS pillar foundation based on conductive concrete was proposed to solve the grounding problem of traction power supply system in areas with high soil resistivity. The proportioning of materials for conductive concrete was optimized
CHANG Zhanning   +5 more
doaj   +2 more sources

BEHAVIOUR OF BACKFILL MATERIALS FOR ELECTRICAL GROUNDING SYSTEMS UNDER HIGH VOLTAGE CONDITIONS [PDF]

open access: yesJournal of Engineering Science and Technology, 2015
Backfill materials like Bentonite and cement are effective in lowering grounding resistance of electrodes for a considerable period. During lightning, switching impulses and earth fault occurrences in medium and high voltage networks, the grounding ...
S. C. LIM   +4 more
doaj   +3 more sources

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