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Time domain solution of electromagnetic radiation model of the grounding system excited by pulse current [PDF]

open access: yesNuclear Technology and Radiation Protection, 2020
This paper deals with an advanced electromagnetic radiation approach for analyzing the time-domain performance of grounding systems under pulse excitation currents.
Dautbašić Nedis J.   +1 more
doaj   +1 more source

Research on the Interaction Between Multi-Circuit Shared HVDC Grounding Electrodes

open access: yes南方能源建设, 2023
[Introduction] Unlike the independent grounding electrode, shared earth electrode is connected to multiple DC (Direct Current) systems, and its parameters and operation mode need to be determined by each system connected to it.
Yu LIU, Wen WANG
doaj   +1 more source

Effect of Impulse Polarity on a New Grounding Device with Spike Rods (GDSR)

open access: yesEnergies, 2020
The characterizations of grounding systems subjected to high impulse conditions are known to be dependent on the polarity, current to peak time and discharge time, as well as the electrical properties of the soil, and the grounding electrodes themselves.
Abdul Wali Abdul Ali   +2 more
doaj   +1 more source

Improvement of single-phase grounding fault detection for small resistance grounding systems based on steady-state monitoring information in the substation

open access: yesZhejiang dianli, 2023
In order to use the existing hardware sources to improve the line selection performance of single-phase grounding fault of small resistance grounding systems, a method for line selection of single-phase grounding fault based on the global steady-state ...
LIU Jian   +4 more
doaj   +1 more source

Review of Substation Grounding System Behavior Under High Frequency and Transient Faults in Uniform Soil

open access: yesIEEE Access, 2020
Substations are important parts of electric power systems, and they require well-designed grounding systems. A proper grounding system guarantees the safety of the personnel working in an environment surrounded by grounded equipment from possible ...
Navinesshani Permal   +3 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

Considerations in the design of electrical substations, including the effect of potential gradient on surrounding metallic structures

open access: yesIngenius: Revista de Ciencia y Tecnología, 2022
For designing and studying an electrical substation grounding system [GS], a simple remote substation is considered according to the safety procedures indicated in the IEEE 80 Standard. Buried metallic materials or nearby metallic structures permanently
Wilo Chiliquinga, Pablo Robles
doaj   +1 more source

Harmonic Current Distribution in Grounding Systems of Cabled Medium Voltage Grids during Single-Pole Ground Fault

open access: yesEnergies, 2021
The design of every power supply system must guarantee the safety for human life even in the event of a fault. Due to the system change in the electrical power supply, the fault current contains more and more unknown shares of current harmonics ...
Benjamin Küchler   +2 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

Seasonal Influences on the Impulse Characteristics of Grounding Systems for Tropical Countries

open access: yesEnergies, 2019
One of the most important parameters of the performance of grounding systems is the soil resistivity. As generally known, the soil resistivity changes seasonally, hence the performance of grounding systems, at DC and under high impulse conditions.
Muhd Shahirad Reffin   +6 more
doaj   +1 more source

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