Surge behavior on the single conductor with a discontinuity

This paper addressed surge propagation on a vertical line with a discontinuity. A formula of surge reflection coefficient expressed by specially-defined surge impedance was introduced, which is similar to that of a conventional transmission line. The formula for the discontinuity with a lumped resistance was also presented. With these formulas, surges on the line with the discontinuity can be evaluated directly. The numerical results for the discontinuity with and without a lumped resistance were presented in this paper. These results were compared with those obtained from a circuit analysis approach - PEEC method. It is found that these results matched well. The average errors are generally less than 1%.