Results 1 to 10 of about 36,031 (286)

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   +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

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

Simulation Study on Lightning Impulse Characteristics of Flexible Graphite Composite Grounding Materials Applied to Grounding Grid of Power System

open access: yesFrontiers in Energy Research, 2022
The flexible graphite composite grounding electrode is a non-metallic grounding electrode with good electrical conductivity, corrosion resistance and non-ferromagnetic properties.
Yuanchao Hu   +7 more
doaj   +1 more source

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   +1 more source

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   +1 more source

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   +1 more source

Comprehensive evaluation of corroded grounding electrodes considering the impulse characteristics

open access: yesFrontiers in Materials, 2023
The grounding electrodes are buried in a harsh soil environment, which will cause corrosion. Corroded grounding electrodes directly affect the safe and stable operation of the power system.
Xuemeng Wang   +4 more
doaj   +1 more source

Measurement and analysis of impulse grounding impedance of tower grounding device subjected to artificial lightning M‐component

open access: yesIET Generation, Transmission & Distribution, 2023
The impulse grounding impedance of tower grounding device is one of the important factors in the lightning protection evaluation of transmission line. The impulse characteristic test of the actual tower grounding device under lightning was rarely carried
Yi Zhang   +7 more
doaj   +1 more source

Measurement of resistance temperature characteristics of graphite based flexible grounding body with current heating voltammetry

open access: yesXi'an Gongcheng Daxue xuebao, 2022
The resistance temperature characteristics and thermal stability of graphite based flexible grounding materials were studied. With the method of current heating and constant temperature protection, the resistance of grounding body at each temperature was
HU Songjiang   +6 more
doaj   +1 more source

Home - About - Disclaimer - Privacy