Digital simulation for solution of oscillatory overvoltage problems in AC railroad electrification

The University of Birmingham, UK, and the University of Pisa, Italy worked together to look at continuous over-voltages in the AC Dorsale Sarda railway system. Different simulation approaches are applied to the same study, the first based on a complex general purpose program and the second on a simpler program developed for such an application. Good agreement on simulation results encourages a comparison between the two methods taking into account difficulty in modelling approach, output capabilities, need of computer memory and computation times