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Estimation of Lightning Current and Return Stroke Velocity Profile Using Measured Electromagnetic Fields
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
2014 (English)In: Electric power components and systems, ISSN 1532-5008, E-ISSN 1532-5016, Vol. 42, no 2, 103-111 p.Article in journal (Refereed) Published
Abstract [en]

To evaluate lightning current using measured electromagnetic fields, an inverse procedure algorithm is proposed in this article, where the variation of return velocity stroke velocity is considered as opposed to previous methods where the velocity is set at a constant value. The proposed algorithm considers all electromagnetic fields components directly in the time domain without needing to apply any extra conversions. Moreover, it can support the wide range of current models based on the general form of engineering current models. The proposed method is validated using a sample of triggered lightning data and measured electromagnetic fields at two stations with different distances from the lightning channel. The results illustrate that the proposed method could estimate the behavior of current along the channel and can thus be used for preparing a data bank to record lightning current parameters of a wide range of lightning occurrences based on measured fields.

Place, publisher, year, edition, pages
2014. Vol. 42, no 2, 103-111 p.
Keyword [en]
return stroke velocity, lightning, electromagnetic, inverse procedure algorithm
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Engineering Science with specialization in Science of Electricity
URN: urn:nbn:se:uu:diva-227949DOI: 10.1080/15325008.2013.853214ISI: 000335931200002OAI: oai:DiVA.org:uu-227949DiVA: diva2:732996
Available from: 2014-07-07 Created: 2014-07-02 Last updated: 2014-07-17Bibliographically approved

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Cooray, Vernon
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