Inductive and conductive interference problems for practical cases solved with special interpolation algorithms

In the paper are presented and discussed practical cases of subdivision of the right of way AC Power Lines / electric traction line / gas pipeline in sections (a circuit model) and also are briefly presented analytical solutions of the induced voltages and current densities in victim structures. Is created a special interpolation algorithm based on global interpolation functions for precise evaluation of the induced voltages values in different points on the underground pipeline, taking into account the measured data. Also, are applied numerical interpolation methods and/or nonlinear curve fitting procedures for determining a continuous function between the magnetic permeability and electrical induced currents, because in practice, there are only a set of available reactance measurements.