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Performance of Practical Grounding Systems under High Impulse Conditions [PDF]

open access: yesEnergies, 2018
This paper investigates the factors affecting the impulse characteristics of purposely built grounding systems. We installed 2 m × 2 m grounding systems in four different sites with different soil resistivity values.
Muhd Shahirad Reffin   +3 more
doaj   +4 more sources

Simulation of earthing systems under high impulse conditions

open access: yes2006 IEEE 8th International Conference on Properties and applications of Dielectric Materials, 2006
Several models of earthing systems under high impulse conditions, which are in satisfactory agreement to the experimental results, have been proposed in previous studies [1-11].
Nor, , N. Mohamad
core   +4 more sources

Effects of moisture contents in soil and impulse polarity of earth electrode under high impulse conditions

open access: yes2006 IEEE 8th International Conference on Properties and applications of Dielectric Materials, 2006
The study on the physics of discharges in soil and performance of earthing networks subjected and obtain better electrical models of earthing systems. In this study, the characteristics of medium grain size sand of different moisture contents and impulse
Ahmad, Hussein   +5 more
core   +2 more sources

Measuring method for partial discharges in a high voltage cable system subjected to impulse and superimposed voltage under laboratory conditions

open access: yesInternational Journal of Electrical Power & Energy Systems, 2019
A partial discharge (PD) measuring system has been deployed in order to identify and measure PD in a high voltage (HV) cable joint under impulse and superimposed voltages under laboratory conditions.
Mor, A. R. (author)   +3 more
core   +4 more sources

Effects of moisture content, impulse polarity and earth electrode's dimension on dry and wet sand under high voltage conditions

open access: yesEuropean Transactions on Electrical Power, 2008
The study on the physics of discharges in soil and performance of earthing networks subjected to lightning Currents are important in order to improve the reliability of electrical systems and to obtain better electrical models of earthing systems.
Ramli, A., Nor, N. Mohamad
core   +3 more sources

Design of protected circuit models for nonlinear dielectric conductivity measurement system under high-energy impulse breakdown conditions [PDF]

open access: yesAIP Advances, 2019
During high voltage tests for nonlinear dielectric samples, accidental breakdown may occur due to the influence of some objective factors (such as material defectiveness, ambient temperature, air humidity, etc.). Under the high voltage conditions, a high
Chenyang Liu   +5 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   +1 more source

Investigative Study of Vertical Electrodes Encased in Concrete/Mortar with Various Sizes of Air Voids

open access: yesEnergies, 2021
Ionisation can occur in the soil when high impulse currents are subjected to grounding systems. This occurrence is generated by a difference in the dielectric strength value between the soil and air voids.
Hanis Hamizah Hizamul-Din   +3 more
doaj   +1 more source

Effectiveness of Large Soil Grain Sizes in Studying Impulse Characteristics of Soil

open access: yesEnergies, 2022
There have been many published studies analysing the impulse characteristics of soil and various soil properties. Some of these published results are found to be largely different and inconsistent from one study to another. Soil properties may be complex
Muhd Shahirad Reffin   +5 more
doaj   +1 more source

High impulsivity in rats predicts amphetamine conditioned place preference [PDF]

open access: yesPharmacology Biochemistry and Behavior, 2012
Stimulants such as d-amphetamine (AMPH) are used commonly to treat attention-deficit hyperactivity disorder (ADHD), but concerns have been raised regarding the use of AMPH due to its reinforcing and potentially addictive properties. The current study examined if individual differences in impulsive choice predict AMPH-induced hyperactivity and ...
Justin R, Yates   +4 more
openaire   +2 more sources

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