Analysis of a Transient Lightning Current Flowing Through the Horizontal Grounding Conductor

Analysis of transient response of current along the horizontal buried conductor due to the excitation of standard lightning impulse current in lossy grounding conditions is an important objective for designing the proper grounding system. In this paper, the transient analysis of current along the buried conductor is performed and reported due to the application of standard lightning current of 100 kA, 1.2/50 µs under different grounding conditions (i.e., \(\sigma = 0.01,0.001,0.0001,0.00001\,{\text{s}}/{\text{m}}\)) by using transmission line (TL) approach. This is the first of its kind attempt that the standard lightning current is considered as an exciting current. It is observed from the reported results that the conductivity of ground much effects on peak of transient current along the buried conductor. Further, this approach will be helpful in order to design proper grounding system to diminish the peak current along the horizontal buried conductor.