Results 261 to 270 of about 12,035,860 (334)

Ground Potential Rise at Various Locations from the Ground Electrodes

2026 13th International Conference on Electrical and Electronics Engineering (ICEEE)
The rise in electric potential at the ground electrode and in its vicinity would occur when the high current flows into the respective ground electrode. The ground potential rise (GPR) in general is reduced for the low fault current and ground resistance
Usman Muhammad, N. M. Nor, Nuhu Dan-Azumi Muhammad, N. Ahmad   +3 more
semanticscholar   +2 more sources

MATHEMATICAL CALCULATION OF GROUND POTENTIAL RISE IN POWER STATION

Advances in Mathematics: Scientific Journal, 2020
During lifetime of a power station, the electrical system is subjected many times to ground faults, giving rise to voltage hazards. This could be a ground potential rise, which is dangerous and result into electric shock and/or loss of life to O&M ...
Pankaj Kumar, Vivek Kumar, Manoj Kumar, C. Kumar, Anupama   +4 more
semanticscholar   +2 more sources

Consistency in ground potential rise estimation utilizing fall of potential method data

IEEE Transactions on Power Delivery, 2005
Analyzing fall of potential (FOP) test data from a grounding system current injection test is the prevalent method used to determine ground potential rise (GPR). Achievable tolerance in analyzing near ideal FOP results using recognized and alternative methods were assessed previously, whereas this paper investigates distortions by buried metallic ...
Darren Woodhouse, Richard H. Middleton
semanticscholar   +4 more sources

Probabilistic Assessment of Ground Potential Rise Using Finite Integration Technique

IEEE Transactions on Power Delivery, 2018
The behavior of grounding systems against waves with high-frequency content such as lightning or very fast transient overvoltages is completely different from the steady state.
A. Razi-Kazemi, M. Hajian
semanticscholar   +2 more sources

Analysis and Mitigation of Ground Grid Lightning Potential Rise

Transactions on Electrical and Electronic Materials, 2020
Grid design depends mainly on bringing grounding resistance, mesh voltage, and step voltage below tolerable limits when subjected to any ground fault. But, it should be noticed that the grid performance has to be tested when subjected to lightning stroke. The performance of the grid under impulse current differs than that of under power–frequency fault.
Ahmed Taher, A. Said, Tamer Eliyan, Abdelsalam Hafez   +3 more
semanticscholar   +2 more sources

Maximum Limit of Allowable Ground Potential Rise of Substation Grounding System

IEEE Transactions on Industry Applications, 2015
Substation grounding systems should guarantee the safety of equipment and human beings. This paper discusses the maximum ground potential rise (GPR) of substation grounding systems resulting from short-circuit ground faults, the potential difference on the insulations of secondary cables and devices, and the relationship between the potential ...
Jinliang He, Bo Zhang, R. Zeng
semanticscholar   +2 more sources

Reverse Operation of Surge Protective Devices on RS 485 Communication Lines Under Lightning Ground Potential Rise

International Conference on Logic Programming, 2022
In protecting against lightning damage, specifically related to RS 485 industrial communication systems, the approach is typically to apply surge protective devices as mitigation measure.
P. H. Pretorius
semanticscholar   +1 more source

Research on 220kV GIS enclosure circulation and temporary ground potential rise

IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society, 2017
Enclosure circulation of Gas Insulated Switchgear (GIS) and Very Fast Transient Overvoltage (VFTO) are harmful to many respects of power system, including system's security, stability and economic. The effective inhibition of GIS enclosure circulation and VFTO has attracted wide attention.
Xinghua Liu, Xuebin Lv, Xu Sun, Tao Wang, Shikun Wang, YU Peng, Yin Pei, Liang Ji, Dongyang Hu, Hong-Shun Liu   +9 more
semanticscholar   +3 more sources

The Damage Effects on Surge Protective Devices Caused by the Ground Potential Rise During the Initial Long Continuous Current Processes of Triggered Lightning Events

IEEE Transactions on Power Delivery, 2021
Based on the triggered lightning technology, this study carried out observational tests regarding the impulses of ground potential rise (GPR) to surge protective devices (SPD), and emphatically analyzed the impulse and damage effects of the initial long ...
Shao-Dong Chen, Xu Yan, Yang Zeng, Lyuwen Chen, Sai Du   +4 more
semanticscholar   +1 more source

Ground potential rise of faulty substations having equal and unequal spacing grounding grids conductors

IET Generation, Transmission & Distribution, 2017
Grounding of power substations is to provide safety for personnel during normal and fault‐to‐ground conditions by limiting step and touch potentials, to dissipate lightning strokes and to stabilise voltage during transient conditions. One important goal of this study is to present simplified approaches for the earth surface potentials and ground ...
O. Gouda, A. E. El Dein
semanticscholar   +2 more sources