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A new approach to calculate electric fields and charge density distribution when lightning strikes a tall object
KTH, School of Electrical Engineering (EES), Electromagnetic Engineering.
KTH, School of Electrical Engineering (EES), Electromagnetic Engineering.ORCID iD: 0000-0002-1607-2493
2014 (English)In: Electric power systems research, ISSN 0378-7796, E-ISSN 1873-2046, Vol. 113, no SI, 15-24 p.Article in journal (Refereed) Published
Abstract [en]

We derive electric field expressions, associated with lightning strikes to a tall object, using the monopole (Continuity Equation) technique which is distinctly different from the traditional dipole (Lorentz Condition) technique. Expressions to calculate the charge density along the tall object and lightning channel based on the assumptions of the transmission line model of the lightning strikes to a tall object and a series point current source placed at the object top, are also derived. These expressions are used to calculate the very close-range electric fields in the monopole (Continuity Equation) technique in terms of the retarded current and charge density along the tower and lightning channel and their results are compared with those calculated from the traditional dipole (Lorentz Condition) technique in terms of the retarded current along the tower and lightning channel. Alternative explanations are provided to the inversion of polarity of the vertical electric field at very close range based on distribution of charge density along the tower and lightning channel.

Place, publisher, year, edition, pages
2014. Vol. 113, no SI, 15-24 p.
Keyword [en]
Charge density distribution, Monopole technique, Electric field, Polarity reversal, Tall object, Lightning
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-148345DOI: 10.1016/j.epsr.2014.03.011ISI: 000337554200005Scopus ID: 2-s2.0-84901603261OAI: oai:DiVA.org:kth-148345DiVA: diva2:736225
Note

QC 20140805

Available from: 2014-08-05 Created: 2014-08-05 Last updated: 2017-12-05Bibliographically approved

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Thottappillil, Rajeev

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CiteExportLink to record
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  • apa
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  • vancouver
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  • de-DE
  • en-GB
  • en-US
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  • Other locale
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