Performance of Pipeline-Tower Combined Grounding System Under Direct Lightning Strike

For sharing corridor, analysis of electrical of interference effects of the high voltage transmission towers and nearby buried natural gas pipelines or pipe laying becomes a topic of great interest in China. Because of the complexity of this problem, computer aided simulation is introduced. Applying traditional FFT method and general frequency grounding system model, this paper accurately solves the parameters of pipeline-tower combined grounding system under direct lightning strike. Considering different factors, such as the parameters of soil and lightning current, the layout of the combined grounding system, this paper computes some specific cases, and presents some useful reference for practical engineering. At last, the software package is briefly introduced.