Reproduction of electromagnetic field waveforms and tower currents associated with return strokes struck Tokyo Skytree

Author

Ishii, M. ; Saito, Masato ; Miki, T. ; Tanaka, Daiki ; Shindo, Takatoshi ; Asakawa, Akira ; Motoyama, Hideki ; Suzuhigashi, Yusuke ; Taguchi, Hiroshi

Author_Institution

Univ. of Tokyo, Tokyo, Japan

fYear

2013

fDate

7-11 Oct. 2013

Firstpage

96

Lastpage

101

Abstract

Observation of lightning current by using Rogowski coils started in February 2012 at Tokyo Skytree, which is a 634-m high freestanding broadcasting tower. Electromagnetic field waveforms are also observed by capacitive antennas at several tens of kilometers from the tower. Lightning current and electric field waveforms simultaneously observed in May 2012 are reproduced by using an electromagnetic model of a return stroke with the help of NEC-4. Observed lightning current waveforms are well reproduced by modeling the tower with small number of thin wires. Electromagnetic field waveforms also are reproduced by an inclined lightning channel model reconstructed from still photographs.

Keywords

carrier transmission on power lines; electromagnetic field theory; lightning; poles and towers; NEC-4; Rogowski coils; Tokyo Skytree; capacitive antennas; electric field waveforms; electromagnetic field waveforms; electromagnetic model; freestanding broadcasting tower; inclined lightning channel model; lightning current waveforms; return strokes; tower currents; Channel models; Coils; Electric fields; Lightning; Poles and towers; Wires; LEMP; NEC-4; Tokyo Skytree; lightning current; upward lightning;

fLanguage

English

Publisher

ieee

Conference_Titel

Lightning Protection (XII SIPDA), 2013 International Symposium on

Conference_Location

Belo Horizonte

Print_ISBN

978-1-4799-1343-5

Type

conf

DOI

10.1109/SIPDA.2013.6729209

Filename

6729209