Results 11 to 20 of about 25,396 (267)

Application of hybrid boundary element method: Example of semishperical ground inhomogeneity [PDF]

Serbian Journal of Electrical Engineering, 2014
One new, so-called hybrid boundary element method (HBEM) is presented in this paper. It is a recently proposed numerical method for stationary and quasi-stationary EM field analysis.
Cvetković Nenad N., Ilić Saša S., Vučković Dragan D., Jovanović Dejan B., Krstić Dejan D.   +4 more
doaj   +1 more source

Soil Treatment to Reduce Grounding Resistance by Applying Low-Resistivity Material (LRM) Implemented in Different Grounding Systems Configurations and in Soils with Different Resistivities

Applied Sciences, 2022
In the present study, field tests were performed using low-resistivity materials (LRMs) in different grounding system (GS) configurations to reduce the grounding resistance (GR) and assess the variation in the effectiveness of the LRMs with increases in ...
Freddy Sinchi-Sinchi, Cristian Coronel-Naranjo, Antonio Barragán-Escandón, Flavio Quizhpi-Palomeque   +3 more
doaj   +1 more source

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

Energies, 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, Nurul Nadia Ahmad, Normiza Mohamad Nor   +2 more
doaj   +1 more source

Assessment of the Feasibility of Applying the Electromagnetic Time Reversal Theory to Locate Defects in Grounding Electrodes

Energies, 2023
In recent years, the electromagnetic time reversal (EMTR) theory has been successfully applied for locating various sources of disturbances, such as short-circuit faults, in power systems.
Rafael Alipio, Naiara Duarte, Hamidreza Karami, Marcos Rubinstein, Farhad Rachidi   +4 more
doaj   +1 more source

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

IEEE 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, Miszaina Osman, Mohd Zainal Abidin Ab. Kadir, Azrul Mohd Ariffin   +3 more
doaj   +1 more source

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

Energies, 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, Normiza Mohamad Nor, Dzulkafley Abd Samad, Muhd Norhasri Muhd Sidek   +3 more
doaj   +1 more source

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

Ingenius: 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

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

Nuclear 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., Mujezinović Adnan Z.   +1 more
doaj   +1 more source

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

Energies, 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, Uwe Schmidt, Jonathan Hänsch   +2 more
doaj   +1 more source

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

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