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Influence of a Nonlinear Channel Resistance on Lightning-Induced Voltages on Overhead Lines.
- Source :
-
IEEE Transactions on Electromagnetic Compatibility . Aug2010, Vol. 52 Issue 3, p676-683. 8p. 2 Diagrams, 10 Graphs. - Publication Year :
- 2010
-
Abstract
- In this paper, a lightning return-stroke model proposed by the authors is used for investigating the effect of a nonlinear (current-dependent) channel resistance on lightning-induced voltages on an overhead wire. Lightning-induced voltages are shown to behave at early times as if they were calculated by assuming a lossy channel and at later times as if they were calculated by assuming a lossless channel, the transition between early and latter stages being smoothed by the continuous time decay of the channel resistance. Despite such a transitional behavior, it is argued that similar induced-voltage waveforms can be obtained if a channel resistance with constant value between the upper and lower limits associated to the leader and return-stroke channels is suitably selected. It is also shown that in the cases evaluated in this paper simple engineering return-stroke models are able to lead to lightning-induced voltages in relatively good agreement with those predicted by the considered nonlinear return-stroke model. Finally, lightning-induced voltages calculated using the nonlinear return-stroke model are shown to be in good agreement with experimental data. [ABSTRACT FROM AUTHOR]
- Subjects :
- *LIGHTNING
*ELECTRIC currents
*ELECTRIC lines
*ELECTRIC wire
*ELECTRIC potential
Subjects
Details
- Language :
- English
- ISSN :
- 00189375
- Volume :
- 52
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Electromagnetic Compatibility
- Publication Type :
- Academic Journal
- Accession number :
- 53047680
- Full Text :
- https://doi.org/10.1109/TEMC.2010.2050323