Alternating current and direct current power supply structure of data center

Abstract

The invention relates to the technical field of a power supply system of a data center, and especially relates to an alternating current and direct current power supply structure of the data center. The power supply structure comprises an alternating current 10kV power distribution device A, an alternating current 10kV power distribution device B, a power electronic transformer A, a power electronic transformer B, a direct current 750V power distribution device, photovoltaic power generation equipment, a direct current 240V power distribution device, a storage battery pack, an industrial frequency transformer and an alternating current 380V power distribution device. The power supply structure is novel, flexible interconnection of the two power electronic transformers is realized through the DC 750V power distribution device and the DC 240V power distribution device, mutual full backup of the two power electronic transformers is realized, and the reliability of the alternating current and direct current power supply system is improved. Transformation link equipment is reduced, and the efficiency of a power supply system is improved. Connection between the data center and photovoltaic power generation equipment is greatly facilitated, after photovoltaic power generation is accessed, the PUE value of the data center is greatly reduced, and a green data center is realized.

Description

technical field [0001] The present invention relates to the technical field of data center power supply systems, in particular to an AC and DC power supply structure of a data center. Background technique [0002] With the implementation of the YD / T 2378-2011 "240V DC Power Supply System for Communications" standard, more and more data centers in China use 240V DC power supply. In the specific implementation process, considering that the cost of two DC power supplies is very high, most DC data centers currently use AC-DC hybrid power supply. The AC-DC power supply structure is as follows: figure 1 shown. [0003] This solution has the following three disadvantages. First, the AC-DC converter of this solution has only redundant modules, without full hot backup, and the reliability of the power supply is not high. When the power frequency transformer fails, it will cause power outages and downtime of IT equipment; Second, the scheme first transforms the AC 10kV mains power i...

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Problems solved by technology

[0003] This solution has the following three disadvantages. First, the AC-DC converter of this solution has only redundant modules, without full hot backup, and the reliability of the power supply is not high. When the power frequency transformer fails, it will cause power outages and downtime of IT equipment; Second, the scheme first transforms the AC 10kV mains power into 380V AC power through the power frequency transformer, and then transforms the 380V AC power into 240V DC power through the AC-DC converter. The power supply efficiency is not high; third, the government policy guides the data center Developing towards a green data center with low PUE, among which access to renewable energy such as photovoltaics is a major measure for green data centers, because the electricity generated by the first stage of renewable energy such as photovoltaic power generation is about 750V DC, and this scheme does not have DC 750V voltage, it is inconvenient to connect photovoltaic power generation equipment, and it is not conducive to reducing the PUE of the data center

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