Results 11 to 20 of about 22,090 (262)

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

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

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

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

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

Kernel Function-Based Inverting Algorithm for Structure Parameters of Horizontal Multilayer Soil

Energies, 2023
A multilayer soil structure model is fundamental to design grounding systems. A new method is presented to invert the structure parameters of horizontal multilayer soil.
Min-Jae Kang, Chang-Jin Boo, Byeong-Chan Han, Ho-Chan Kim   +3 more
doaj   +1 more source

Investigations on the Performance of Various Horizontal Ground Electrodes

Energies, 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, Normiza Mohamad Nor, Nurul Nadia Ahmad, Nur Farahi Idris, Azwan Mahmud   +4 more
doaj   +1 more source

Modeling of different tower grounding systems using hybrid continuous circuit-trapezoidal integration method [PDF]

Serbian Journal of Electrical Engineering, 2021
In order to protect the transmission lines against lightning strikes, it is important to investigate the tower grounding system. In this paper, a recent method called hybrid continuous circuit-trapezoidal integration method is used to calculate ...
Asadpourahmadchali Mohammadbagher, Niasati Mohsen, Alinejad-Beromi Yousef   +2 more
doaj   +1 more source

A pulse generator with inductive energy storage for measuring the grounding resistance of transmission line towers

Vestnik MGTU, 2018
The pulse method may be used to measure the footing resistance of transmission towers with overhead grounding wires. Measuring systems that obtain the time dependent transient impedance may be used to measure the low-frequency resistance of transmission ...
Kolobov V. V. , Kolobov V. V. , Selivanov V. N.   +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

Zhejiang 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, ZHU Qingsong, WANG Yizhao, ZHANG Zhihua, CHEN Jieyu   +4 more
doaj   +1 more source