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    Abstract
2012 (Vol. 4, Issue: 05)
Article Information:

Comparison of Return Stroke Current Profiles for Transmission-Line-Type and Traveling-Current-Source-Type Models

J.O. Adepitan and E.O. Oladiran
Corresponding Author:  J.O. Adepitan 

Key words:  Channel base current, channel height, lightning channel, lightning models, return stroke current, ,
Vol. 4 , (05): 529-533
Submitted Accepted Published
February 18, 2012 March 24, 2012 May 15, 2012
Abstract:

The study is aimed at determining the dependence of the current along a channel on the model used, assuming the same base current. We compared three transmission-line-type models, namely: Transmission Line (TL), Modified Transmission Line with Linear decay, Modified Transmission Line with Exponential decay and two traveling-current-source-type models: Bruce-Golde (BG) and Traveling Current Source (TCS) models. The current profiles along the channel at different heights predicted by these models are presented and discussed. Comparison is based on the assumption that all the models have the same base current. It was found that at low heights and within a time window frame of 15 :s, the currents of the transmission-line-type models predict a zero value at one time or the other with a maximum turning point following some 1:s after. A linear relationship is predicted between the current peak and the channel height. A discontinuity of current peak was observed at high heights. No zero value of current was recorded in case of TCS both at low and high channel heights.
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  Cite this Reference:
J.O. Adepitan and E.O. Oladiran, 2012. Comparison of Return Stroke Current Profiles for Transmission-Line-Type and Traveling-Current-Source-Type Models.  Research Journal of Environmental and Earth Sciences, 4(05): 529-533.
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ISSN (Online):  2041-0492
ISSN (Print):   2041-0484
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