Year: 2000
Type: article
Abstract: Observation of winter lightning has been carried out on a test transmission line since 1987. For the analysis of the observation results by EMTP, it is necessary to make parameters of the transmission line model clear. So we measured the lightning surge response characteristics on a tower of the test transmission line. The measured surge impedance for the transmission tower was 90 Ω and effective propagation velocity inside the transmission tower is almost 90% of the speed of light. We estimated influence of the arrangement of the current lead wire and the auxiliary potential wire, and analyzed the measured waveforms by EMTR The appropriate surge impedance at each section of the multistory tower model determined through EMTP analysis was approximately 80 Ω.
Authors: Naoki Itamoto, Seiichi Shimada, Kazuo Nakata, Hideki Motoyama, Masaru Ishii
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W2332941099