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Abstract
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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
Submitted: February 18, 2012
Accepted: March 24, 2012
Published: May 15, 2012 |
Abstract:
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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.
Key words: Channel base current, channel height, lightning channel, lightning models, return stroke current, ,
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Abstract
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Cite this Reference:
J.O. Adepitan and E.O. Oladiran, . Comparison of Return Stroke Current Profiles for Transmission-Line-Type and Traveling-Current-Source-Type Models. Research Journal of Environmental and Earth Sciences, (05): 529-533.
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ISSN (Online): 2041-0492
ISSN (Print): 2041-0484 |
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