Electric Arc Recoil–A Novel Method for Reducing Lightning Strike Potential Difference for Transmission Line

Increasing arc pressure by tens of times with fine pouring tube, a positive shock wave the entering closed space thin tube (electric recoil wave). The electric is 8 to 23 than that wave. Since has more wave, and their directions are opposite, poring driven away from channel completely emptying large scale truncation formed. Therefore, interrupts lightning current, recombusts form new backwash recombustion caused alternately, forming intermittent discharge, decrease in amplitude steepness discharge time. results show current can reduce 67.14 kA 35.1 kA, 77.3%. This attenuation method could significantly flowing into ground, induced overvoltage ohm potential difference. Additionally, problem strike step voltage high soil specific resistivity areas electromagnetic be solved this paper. probability original fault reduced, operation reliability enhanced. lower cost ground network improve protection performance.