Electric field around parallel DC and multi-phase AC transmission lines

A new method is described for calculating the electrostatic field values around parallel DC and multiphase AC transmission lines. The new method is based on the charge simulation technique combined with the method of imaging, where the number and locations of the simulating charges are no longer arbitrary. The surface charge on each subconductor is simulated by the images of the remaining subconductors. The superposition technique is employed, and the RMS value of the electric field is calculated at any point in the space around a transmission line of any number of subconductors. Several examples of field calculation were carried out by the new method, showing good agreement with previous calculations and measurements. The merits of this method are simplicity in programming and considerable saving in computer time compared to classical field calculation techniques