# Digital computation of currents and voltages due to lightning strokes to power system components

Kishore, NK and Nagabhushana, GR (1990) Digital computation of currents and voltages due to lightning strokes to power system components. In: VI NPSC 90. Power Systems for the Year 2000 and Beyond. Proceedings of the Sixth National Power Systems Conference, 4-7 June 1990, Bombay, India, pp. 264-269.

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## Abstract

Presents an equivalent circuit for a lightning stroke to estimate the magnitude and waveshapes of currents and voltages on power transmission system components due to lightning strokes. Results for strokes to towers, mid-spans of overhead ground wire, ground and line conductors are presented. For these cases times to front of voltages are about 1 μs and that for currents are in the range of 8 to 10 $\mu s$. Crest currents are as high as 100 kA whereas voltages are upto 3 MV. Arrester currents can go as high as 1400 A with a front time of the order of 15 $\mu s$, while the arrester voltages are substantially rectangular lasting anywhere upto 60 $\mu s$.

Item Type: Conference Paper Copyright of this article belongs to Tata McGraw-Hill. Division of Electrical Sciences > High Voltage Engineering (merged with EE) 26 Oct 2007 18 Jan 2012 09:57 http://eprints.iisc.ernet.in/id/eprint/11368