Research on lightning protection devices for overhead transmission lines based on electromagnetic suppression method
A new lightning protection device using electromagnetic suppression has been developed to enhance the lightning resistance of overhead transmission lines and overcome the limitations of traditional lightning protection devices in reducing the amplitude of lightning current.This method can effectively reduce both the steepness of the lightning current waveform and the peak of the earthward current.The design of the new device's structure and electrical charac-teristics are investigated,including the current-carrying coil and the device's manufacturing techniques.Finally,a prototype is made and subjected to simulation testing.The results indicate that,in comparison to traditional lightning protection devices,the novel device achieves a 54%reduction in the steepness of the lightning current waveform and a 26%reduction in the peak earthward current.Besides,it can accommodate various installation dimensions and direc-tions for tower angle steel,significantly reducing the probability of lightning side flashes and backflashes affecting over-head transmission lines.
国家科技期刊平台
NSTL
万方数据
维普
