Direct current power supply system

Abstract

The invention provides a direct current power supply system. The system is characterized by comprising at least one first input source and a second input source, a phase-shifting transformer group, arectifier group and a monitoring module; the phase-shifting transformer group is used for converting medium voltage alternating current input by the first input source or the second source into low voltage alternating current and then outputting the low voltage alternating current; the rectifier group is used for rectifying the low voltage alternating current output by the corresponding phase-shifting transformer to be low voltage direct current and outputting the low voltage direct current; the transformer group and the rectifier group both are arranged in the same power supply box / cabinet, or the phase-shifting transformer group and the rectifier group are respectively arranged in two neighboring power supply boxes / cabinets; and the monitoring module monitors a working state of the phase-shifting transformer group and the rectifier group. With the direct current power supply system provided by the invention, the phase-shifting transformer, the rectifier and the monitoring module areorganically integrated into a modularized system, thus, line transmission loss and wring cost are reduced, moreover, each module in the system is monitored in real time through the monitoring module,and operational stability of the system is improved.

Description

technical field [0001] The invention relates to the technical field of power supply and distribution, in particular to a DC power supply system. Background technique [0002] The power capacity of a large data center is generally at the tens of MW level. Because of its load characteristics, the power supply and distribution of a large data center has high reliability requirements to ensure that the entire computer room can reliably supply power when the AC power grid fails or is abnormal. At the same time, high power supply efficiency is also required to reduce the cost of operation and maintenance of the computer room. [0003] The current commonly used data center power supply and distribution system architecture is: the grid is combined with a generator, and AC UPS (including batteries) or DC UPS (including batteries) are used to supply power to data center equipment. In order to further improve the reliability of power supply, generators, UPS and power distribution unit...

AI Technical Summary

Problems solved by technology

[0004] In the existing scheme, the input of the power supply and distribution system of the data center is connected to the power frequency transformer group, and the power frequency transformer group is connected to the rectifier group. The redundant configuration of different floors is very complicated, and the wiring between the two is also very complicated. The length of the line is too long, resulting in high cost and loss of the line, and the entire power supply system is lacking in efficiency and reliability.

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