Improved electro‐geometric model for shielding failure analysis of transmission lines

Research and application of the FETD method for the EM transient response of MTLs excited by HEMP

“…where E c = 50 kV/m is the peak value of the electric field amplitude; k c = 1.05 is the modified coefficient; a = 4 × 10 6 ; and b = 4.76 × 10 8 . Fig.…”

“…Multiconductor transmission lines (MTLs) are widely used in electrical and electronic engineering as the significant transmission path of energy and information [1][2][3][4], but they are vulnerable to external electromagnetic (EM) interferences [5], i.e. emissions from lighting EM pulse [6][7][8], high-power radars, high-altitude EM pulse (HEMP) etc. HEMP is a complex multi-pulse, and its earlytime (E1) component is characterised by large radiation scope, intense field strength, and wide-frequency spectrum [9].…”

Monte‐Carlo‐based simulation and investigation of 230 kV transmission lines outage due to lightning

“…To such an aim, an electro-geometric model, which is based upon the striking distance as a function of lightning current, has been created and improved [10][11][12]. In [13], an improved electro-geometric model based on the consideration of upward corona leader system has been introduced. It is worth noting that the electro-geometric model is the most commonly used technique for determining the shielding failure rate and also the evaluation of lightning protection system designing.…”

Comprehensive prediction method for failure rate of transmission line based on multi‐dimensional cloud model

“…In [13], the mutual impacts of the failure rate for transmission lines were analysed by the Event Tree Analysis method. In [14], an improved electro‐geometric algorithm was used to analyse the shielding failure of transmission lines. All of these algorithms can deal with uncertainties, but they are so complex that they are inconvenient for predicting.…”