I wish to simulate a transmission line and it's losses according to load, length and type of conductor, each one having their own characteristics such as impedance, radius, cost, etc.
My goal is to figure out at which point a single-wire earth return line stops being economically feasible when compared to a regular single-phase line.
I'm familiar with "normal" circuit simulation with programs like LTspice and Psim, but I don't know how I can use them to tackle this problem. It seems to require a lot of different simulations, at least one for each type of conductor, with different parameters.
After all those simulations I also have to make sense of the results. How can I do that?