FIELD: electrical engineering.
SUBSTANCE: invention relates to the field of electrical engineering, in particular, to three-wire systems for the supply of DC power networks. In the three-wire DC power supply system, the first and second DC power sources located at station (1), set of three lines, common line (7) is connected to the common output of both sources of DC voltage at the station, wherein this output is obtained by combining one pair of outputs with opposite polarities of the output voltage. Non-ordinary line (6) is connected to an unused output of the first constant voltage source. Power line (8) is connected to the device and connected to a separate output of the second constant voltage source. In addition, polarity converters (4.1) and (4.2) have been added. Above polarity converters are connected to common line (7) and supply line (8) in accordance with their polarities. Outputs of the polarity converter are connected to the common and non-common lines according to their polarities. In the common line, the currents are compensated from the non-common and supply lines. DC loads (11) can be connected to the power supply system via the group line directly, AC loads can be connected via inverter (12).
EFFECT: group line allows you to connect loads that are located off the main lines of the power supply system.
23 cl, 27 dwg
