Title :
Influence of geometry of — GC strokes on associated electromagnetic waveforms
Author :
Saito, Mikihisa ; Ishii, Masaru ; Itamoto, Naoki
Author_Institution :
Univ. of Tokyo, Tokyo, Japan
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;
Conference_Titel :
Lightning Protection (XI SIPDA), 2011 International Symposium on
Conference_Location :
Fortaleza
Print_ISBN :
978-1-4577-1898-4
DOI :
10.1109/SIPDA.2011.6088451
