Calculation of Shielding Failure Rate on Transmission Line Based on Improved EGM and the Analysis of Typical Accident
Bin Ma · Gaoya dianqi · 2006
The improved electric geometrical model is proposed,and some on-site accidents are successfully explained,which are difficultly commented by EGM.With such model the effect of tower structure,lightning current amplitude,angle of the lightning incidence,as well as the ground angle on the shielding failure rate are analyzed.It is concluded that large lightning current can stride across lightning conductors to strike conductors under certain conditions in mountain areas.