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 R2 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.

Automated summary

This article discusses an experiment on rocket-triggered lightning to 10 kV power distribution lines and analyzes the characteristics of lightning current. The study finds that the return strokes (RSs) current of the triggered-lightning flashes exhibits similarities to subsequent strokes current from natural lightning, and proposes the use of a double HEIDLER function for simulating RS current.