Railway power supply system and method for powering an electrical device situated along a railway

A railway power supply system for electrically powering at least one electrical device situated along a railway, said powering to be performed through an electrically conductive line connecting a railway signaling device power source to a railway signaling device situated along the railway, wherein the railway signal device power source provides power to the railway signaling device at a first frequency value, said power supply system comprising:

• a power injector coupled to the electrically conductive line, said power injector configured to generate and introduce electric device power to the electrically conductive line at a first point of the electrically conductive line for powering the at least one electrical device, the electric device power configured to generate electric device power at a second frequency value sufficiently spread apart from said first frequency value to avoid interference with the operation of the railway signaling device;
• and
• a power collector coupled at a second point of the electrically conductive line and to the at least one electrical device and configured to provide a path between the electrically conductive line and the at least one electric device for the electric device power injected by the power injector.