EVALUATION OF LIGHTNING RETURN STROKE CURRENT USING MEASURED ELECTROMAGNETIC FIELDS

The lightning return stroke current is an important parameter for considering the effect of lightning on power lines. In this study, a numerical method is proposed to evaluate the return stroke current based on measured electromagnetic fields at an observation point in the time domain. The proposed...

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Bibliographic Details
Published inElectromagnetic waves (Cambridge, Mass.) Vol. 130; pp. 581 - 600
Main Authors Izadi, M, Ab Kadir, M.Z.A, Gomes, C, Cooray, V
Format Journal Article
LanguageEnglish
Published Cambridge Electromagnetics Academy 01.01.2012
Subjects
Electric currents
Electric measurements
Electric waves
Electromagnetic radiation
Electromagnetic waves
Engineering research
Engineering Science with specialization in Science of Electricity
Lightning
Measurement
Methods
Properties
Teknisk fysik med inriktning mot elektricitetslära
Sweden
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Summary:The lightning return stroke current is an important parameter for considering the effect of lightning on power lines. In this study, a numerical method is proposed to evaluate the return stroke current based on measured electromagnetic fields at an observation point in the time domain. The proposed method considers all field components and the full wave shape of the current without the use of a special current model as a basic assumption compared to previous methods. Furthermore, the proposed algorithm is validated using measured fields obtained from a triggered lightning experiment. The results show a good agreement between the simulated field based on the evaluated currents from the proposed method and the corresponding measured field at a remote observation point. The proposed method can determine current wave shapes related to a greater number of lightning occurrences compared to the direct measurement of the current.
ISSN:1559-8985
1070-4698
1559-8985
DOI:10.2528/PIER12060712