Lightning-induced voltage on an overhead wire dependent on ground conductivity

Journal Article · Fri Dec 31 23:00:00 EST 1993 · IEEE Transactions on Power Delivery (Institute of Electrical and Electronics Engineers); (United States)

DOI:https://doi.org/10.1109/61.277685· OSTI ID:7046348

Ishii, Masaru ^[1]; Michishita, Koji ^[2]; Hongo, Yasuji; Oguma, Syujiro ^[3]

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1. Univ. of Tokyo (Japan)
2. Shizuoka Univ., Hamamatsu (Japan)
3. Tohoku Electric Power Co. Inc., Sendai (Japan)

Lightning-induced voltage waveforms on an overhead wire are analyzed by solving the Telegrapher's equation, in combination with numerical calculations of electric fields from return stroke currents as inducing sources. Based on an equivalent circuit newly developed for an explanation of this method, the roles of the vertical and horizontal electric fields in generating the induced voltage are studied, respectively. By numerical calculations, it is pointed out that the crest value of the lightning-induced voltage waveform at the end of the line is greatly affected by the ground conductivity and the lightning striking points. The accuracy of the computed results is ensured by comparison with the experimental results obtained from a geometrical model on a finitely conducting ground.

• OSTI ID: 7046348
• Journal Information: IEEE Transactions on Power Delivery (Institute of Electrical and Electronics Engineers); (United States), Journal Name: IEEE Transactions on Power Delivery (Institute of Electrical and Electronics Engineers); (United States) Journal Issue: 1 Vol. 9:1; ISSN 0885-8977; ISSN ITPDE5
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
240100* -- Power Systems-- (1990-)
COMPUTER CALCULATIONS
ELECTRIC DISCHARGES
ELECTRIC POTENTIAL
INDUCTION
LIGHTNING
POWER TRANSMISSION LINES