The classical systems of centralized power supply do not allow to provide the necessary conditions for the introduction of high-speed traffic on existing lines. Voltage values both on the buses of the traction substation and in the traction lines have a significant range of oscillations. Having a significant reserve of installed aggregate power at traction substations in UNraine, there are no means of voltage modes regulation in the traction lines. Existing foreign and UNrainian means for increasing of the energy efficiency of DC traction power supply systems require significant capital investments and do not taNe into account the peculiarities of the organization of high-speed traffic. Therefore, it is necessary to develop energy-saving technology of distributed power supply with the maximum use of existing infrastructure, taNing into account the features of the high-speed trains load.