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Voltage Distribution Along Earth Grounding Grids Subjected to Lightning Currents.
- Source :
-
IEEE Transactions on Industry Applications . Nov2015 Part 2, Vol. 51 Issue 6, p4912-4916. 5p. - Publication Year :
- 2015
-
Abstract
- This paper applies a rigorous electromagnetic model to determine the transient distribution of potentials along a substation earth grounding grid subjected to lightning currents. The obtained results show that, in the initial period of the transient, equipment pieces that are earth grounded at distinct points of the grid and are electrically linked (for example, by aerial communication cables) experience impulsive loop currents. Such loop currents can cause equipment malfunctions, failures, and damage. A remarkable conclusion of this paper is that such loop currents can reach substantial values even in the case of soils of low resistivity. Some practical aspects are highlighted in order to reduce the risks due to the nonuniform distribution of potentials along earth grounding. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00939994
- Volume :
- 51
- Issue :
- 6
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Industry Applications
- Publication Type :
- Academic Journal
- Accession number :
- 111152768
- Full Text :
- https://doi.org/10.1109/TIA.2015.2412518