Estimation of lightning current wave front duration by the lightning performance of Japanese EHV transmission lines

In the analysis of back-flashover of transmission lines, the wave-front time of the lightning current is assumed to be 2 approximately 4 mu s. The results of a lightning investigation at the tops of isolated towers show that the front time is closely related to the current amplitude, and is longer t...

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Bibliographic Details
Published inIEEE transactions on power delivery Vol. 8; no. 2; pp. 660 - 671
Main Author Udo, T.
Format Journal Article
LanguageEnglish
Published United States IEEE 01.04.1993
Subjects
240201 - Power System Networks, Transmission & Distribution- AC Systems- (1990-)
AC SYSTEMS
ASIA
CALCULATION METHODS
CURRENTS
DEVELOPED COUNTRIES
Distributed parameter circuits
EHV AC SYSTEMS
ELECTRIC ARCS
ELECTRIC CURRENTS
ELECTRIC DISCHARGES
ELECTRICAL FAULTS
ENERGY SYSTEMS
JAPAN
LIGHTNING
MECHANICAL STRUCTURES
Performance analysis
Poles and towers
Power & Energy Society
POWER SYSTEMS
POWER TRANSMISSION AND DISTRIBUTION
POWER TRANSMISSION LINES
POWER TRANSMISSION TOWERS
Printing
Shape
Steel
Surges
WAVE PROPAGATION
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Summary:In the analysis of back-flashover of transmission lines, the wave-front time of the lightning current is assumed to be 2 approximately 4 mu s. The results of a lightning investigation at the tops of isolated towers show that the front time is closely related to the current amplitude, and is longer than 8 mu s in 70 approximately 120 kA range. The author estimates the wave-front time from the lightning performance of EHV (extra-high-voltage) double circuit transmission lines, and finds that it is about 4 mu s in the 70 approximately 150 kA range. The author predicts that lightning currents measured at the tops of isolated tall towers will be different in shape because of the large predischarge current.< >
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0885-8977
1937-4208
DOI:10.1109/61.216873