Revision, extension, and validation of Jordan's formula to calculate the surge impedance of vertical conductors

Jordan's formula to calculate the surge impedance of vertical conductors is revised and extended to take into account systems with multiple conductors. Experimental data and the hybrid electromagnetic model are applied in order to validate the derived expressions. Additionally, Jordan's fo...

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Veröffentlicht in:	IEEE transactions on electromagnetic compatibility 2006-08, Vol.48 (3), p.530-536
Hauptverfasser:	De Conti, A., Visacro, S., Soares, A., Schroeder, M.A.O.
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Conductors Disturbances. Regulation. Protection Electrical engineering. Electrical power engineering Electrical power engineering Electromagnetic compatibility Electromagnetic transient analysis Exact sciences and technology Impedance Information, signal and communications theory lightning Mathematical models numerical analysis Poles and towers Power networks and lines power transmission lines Representations Strikes Surges Telecommunications and information theory Towers
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Beschreibung
Zusammenfassung:	Jordan's formula to calculate the surge impedance of vertical conductors is revised and extended to take into account systems with multiple conductors. Experimental data and the hybrid electromagnetic model are applied in order to validate the derived expressions. Additionally, Jordan's formula is successfully used in the representation of an actual tower as a multiconductor vertical system. The obtained results indicate the usefulness of the derived expressions if an engineering analysis of direct strikes over elevated strike objects is required
ISSN:	0018-9375 1558-187X
DOI:	10.1109/TEMC.2006.879345