Influence of geometry of — GC strokes on associated electromagnetic waveforms

Author

Saito, Mikihisa ; Ishii, Masaru ; Itamoto, Naoki

Author_Institution

Univ. of Tokyo, Tokyo, Japan

fYear

2011

fDate

3-7 Oct. 2011

Firstpage

91

Lastpage

96

Abstract

GC (Ground to Cloud) strokes are specifically observed in winter along the coast of the Sea of Japan, characterized by high range-normalized amplitudes and bipolar waveforms in their electromagnetic radiation. The strokes cause severe transmission line faults, but their modeling, which is necessary to estimate current parameters from electromagnetic radiation, has not been reached to agreement yet. In this paper, relationship between the geometry of lightning channels and electric field waveforms of negative GC strokes are investigated, and estimation of the peak current and location error are discussed.

Keywords

clouds; electromagnetic waves; geometry; lightning; parameter estimation; power system simulation; power transmission faults; power transmission lines; bipolar waveform; current parameter estimation; electric field waveform; electromagnetic radiation; electromagnetic waveform; high range-normalized amplitude; lightning channel geometry; location error estimation; negative GC stroke; negative ground to cloud stroke; peak current estimation; transmission line fault; Channel models; Clouds; Electric fields; Junctions; Lightning; Power transmission lines; GC strokes; LEMP; numerical electromagnetic field analysis; winter lightning;

fLanguage

English

Publisher

ieee

Conference_Titel

Lightning Protection (XI SIPDA), 2011 International Symposium on

Conference_Location

Fortaleza

Print_ISBN

978-1-4577-1898-4

Type

conf

DOI

10.1109/SIPDA.2011.6088451

Filename

6088451