Rocket-Triggered-Lightning Strikes to 10 kV Power Distribution Lines and Associated Measured Parameters of Lightning Current

This article presents an experiment of rocket-triggered lightning to 10 kV power distribution lines and the characteristics of lightning current at Guangzhou Field Experiment Site for Lightning Research and Testing during 2018–2019. The return strokes (RSs) current of the triggered-lightning flashes in this study exhibits a shorter half-peak width and similar risetime and peak current compared with those of subsequent strokes current from natural lightning. The peak current of RSs shows strong power function correlations with charge transfer within 1 ms and action integral within 1 ms of RSs, with
R
²
of 0.80 and 0.92, respectively. Besides, the peak current of RSs is proportional to the average rate rise of RSs (
dI
/
dt
). We recommend the double HEIDLER function to simulate the RS current and provide accurate raw data for the study of lightning protection.