CN213585162U - AC/DC power supply structure of data center - Google Patents
AC/DC power supply structure of data center Download PDFInfo
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- CN213585162U CN213585162U CN202120627001.4U CN202120627001U CN213585162U CN 213585162 U CN213585162 U CN 213585162U CN 202120627001 U CN202120627001 U CN 202120627001U CN 213585162 U CN213585162 U CN 213585162U
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Abstract
The utility model belongs to the technical field of data center power supply system technique and specifically relates to indicate a data center's alternating current-direct current power supply structure, it includes interchange 10kV distribution device A, interchange 10kV distribution device B, power electronic transformer A, power electronic transformer B, direct current 750V distribution device, photovoltaic power generation equipment, direct current 240V distribution device, storage battery, power frequency transformer and interchange 380V distribution device. The utility model discloses novel structure, through the flexible interconnection of direct current 750V distribution device and direct current 240V distribution device with two power electronic transformers, realize that each other of two power electronic transformers is full backup, improved AC/DC power supply system's reliability. The utility model discloses reduced vary voltage link equipment, improved power supply system's efficiency. The utility model discloses greatly make things convenient for data center to link to each other with photovoltaic power generation equipment, insert photovoltaic power generation back, with greatly reduced data center's PUE value, realize green data center.
Description
Technical Field
The utility model belongs to the technical field of data center power supply system technique and specifically relates to indicate a data center's alternating current-direct current power supply structure.
Background
With the implementation of the YD/T2378-. In a specific implementation process, considering that the cost of two-path direct current power supply is very high, most direct current data centers adopt an alternating current and direct current hybrid power supply mode at present, and an alternating current and direct current power supply structure of the direct current data centers is shown in fig. 1.
The scheme has the following three defects that firstly, the alternating current-direct current converter only has a redundant module, full-hot backup is not realized, the power supply reliability is not high, and the IT equipment is powered off and down when the power frequency transformer fails; secondly, according to the scheme, an alternating current 10kV commercial power is transformed into a 380V alternating current through a power frequency transformer, the 380V alternating current is transformed into a 240V direct current through an alternating current-direct current converter, and the power supply efficiency is low; thirdly, government policies guide the development of data centers to low PUE green data centers, wherein the access of renewable energy sources such as photovoltaic and the like is a great measure of the green data centers, because the electricity generated by the first stage of renewable energy sources such as photovoltaic power generation and the like is direct current of about 750V, the scheme does not have direct current of 750V, is inconvenient for the access of photovoltaic power generation equipment, and is not beneficial to the reduction of the PUE of the data centers.
Disclosure of Invention
The utility model discloses problem to prior art provides a data center's alternating current-direct current power supply structure, novel structure, design benefit, and this power supply structure can reduce data center's PUE to improve load equipment's power supply reliability.
In order to solve the technical problem, the utility model discloses a following technical scheme:
the utility model provides an alternating current-direct current power supply structure of data center, including exchanging 10kV distribution device A, exchanging 10kV distribution device B, power electronic transformer A, power electronic transformer B, direct current 750V distribution device, photovoltaic power generation equipment, direct current 240V distribution device, storage battery, power frequency transformer and exchanging 380V distribution device;
the alternating current 10kV power distribution device A is respectively connected with the power electronic transformer A and the power electronic transformer B;
the direct-current 750V power distribution device is respectively connected with the power electronic transformer A and the power electronic transformer B;
the direct-current 750V power distribution device is connected with the photovoltaic power generation equipment;
the direct current 240V power distribution device is respectively connected with the power electronic transformer A and the power electronic transformer B;
the alternating current 10kV power distribution device B is connected with an alternating current 380V power distribution device through the power frequency transformer;
the direct current 240V power distribution device, the storage battery pack and the alternating current 380V power distribution device are all used for supplying power to load equipment.
The power electronic transformer A and the power electronic transformer B are at least provided with three ports, and the three ports comprise an alternating current 10kV port, a direct current 750V port and a direct current 240V port.
The alternating current 10kV port adopts a modular cascade topology structure and is formed by connecting a plurality of groups of power sub-modules in series in a low-voltage parallel high-voltage mode.
The direct current 240V port is formed by a buck non-isolated converter.
The direct-current 750V power distribution device is used for flexibly interconnecting a direct-current 750V port of the power electronic transformer A and a direct-current 750V port of the power electronic transformer B; and the direct-current 750V power distribution device is connected with the photovoltaic power generation equipment and is used for grid-connected power generation of the photovoltaic power generation equipment.
The direct current 240V power distribution device is used for flexibly interconnecting a direct current 240V port of the power electronic transformer A and a direct current 240V port of the power electronic transformer B.
The storage battery pack is positioned between the direct current 240V power distribution device and the load equipment, and is used for outputting direct current to the load equipment when the alternating current input end of the load equipment is in short-time power failure, so that uninterrupted power supply of the load equipment is guaranteed.
The power frequency transformer is a dual-port power frequency transformer, and is provided with an alternating current 10kV port and an alternating current 380V port.
The utility model has the advantages that:
the utility model discloses novel structure, design benefit replaces power frequency transformer with two power electronic transformers, through the flexible interconnection of direct current 750V distribution device and direct current 240V distribution device with two power electronic transformers, realizes that each other of two power electronic transformers is full backup, has improved alternating current-direct current power supply system's reliability. The utility model discloses a power electronic transformer is only for direct current 240V with exchanging 10kV commercial power through a vary voltage link vary voltage, has reduced vary voltage link equipment, has improved power supply system's efficiency. The utility model discloses greatly make things convenient for data center to link to each other with photovoltaic power generation equipment, insert photovoltaic power generation back, with greatly reduced data center's PUE value, realize green data center.
Drawings
Fig. 1 is a schematic block diagram of an ac/dc power supply structure in which an ac/dc hybrid power supply is adopted in a dc data center in the prior art.
Fig. 2 is a schematic block diagram of an ac/dc power supply structure of a data center according to the present invention.
Fig. 3 is a schematic circuit diagram of an ac/dc power supply structure of a data center according to the present invention.
The reference numerals in fig. 1 to 3 include:
101. an alternating current 10kV power distribution device A; 102. a power electronic transformer A; 103. a power electronic transformer B; 104. a DC750V power distribution device; 105. a photovoltaic power generation device; 106. a direct current 240V power distribution device; 107. a battery pack; 108. a load device; 109. an alternating current 10kV power distribution device B; 110. a power frequency transformer; 111. an AC 380V power distribution device.
Detailed Description
In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention. The present invention will be described in detail with reference to the accompanying drawings.
An alternating current-direct current power supply structure of a data center is shown in fig. 2 to 3 and comprises an alternating current 10kV power distribution device A101, an alternating current 10kV power distribution device B109, a power electronic transformer A102, a power electronic transformer B103, a direct current 750V power distribution device 104, photovoltaic power generation equipment 105, a direct current 240V power distribution device 106, a storage battery pack 107, a power frequency transformer 110 and an alternating current 380V power distribution device 111;
the alternating current 10kV power distribution device A101 is respectively connected with the power electronic transformer A102 and the power electronic transformer B103;
the direct-current 750V power distribution device 104 is respectively connected with the power electronic transformer a102 and the power electronic transformer B103;
the direct-current 750V power distribution device 104 is connected with the photovoltaic power generation equipment 105;
the direct current 240V power distribution device 106 is connected to the power electronic transformer a102 and the power electronic transformer B103 respectively;
the alternating current 10kV power distribution device B109 is connected with an alternating current 380V power distribution device 111 through the power frequency transformer 110;
the direct current 240V power distribution device 106, the storage battery pack 107 and the alternating current 380V power distribution device 111 are all used for supplying power to load equipment 108.
Specifically, the utility model discloses novel structure, design benefit replaces power frequency transformer 110 with two power electronic transformers, and through the flexible interconnection of two power electronic transformers of direct current 750V distribution device 104 and direct current 240V distribution device 106, realize each other of two power electronic transformers and be full backup, improved AC/DC power supply system's reliability. The utility model discloses a power electronic transformer is only for direct current 240V with exchanging 10kV commercial power through a vary voltage link vary voltage, has reduced vary voltage link equipment, has improved power supply system's efficiency. The utility model discloses greatly make things convenient for data center to link to each other with photovoltaic power generation equipment 105, insert photovoltaic power generation back, with greatly reduced data center's PUE value, realize green data center.
In the ac/dc power supply structure of the data center described in this embodiment, each of the power electronic transformer a102 and the power electronic transformer B103 is at least provided with three ports, and the three ports include an ac 10kV port, a dc750V port, and a dc 240V port.
Specifically, an alternating current 10kV port adopts a modular cascade topology structure, a plurality of groups of power sub-modules are connected in series in a low-voltage parallel high-voltage mode, and a direct current 240V port is formed by a step-down non-isolated converter. Therefore, alternating current 10kV mains supply can be directly transformed into direct current 240V through one transformation link through the power electronic transformer, and compared with a common direct current power supply structure of a data center, the direct current power supply structure has the advantages that equipment in the middle of one-level transformation link is reduced, and the efficiency of a power supply system is improved. After the embodiment is implemented, the power supply efficiency of the novel alternating current/direct current power supply structure of the data center can reach 86.3%, and compared with the power supply efficiency of the common alternating current/direct current power supply structure of the data center of 81.8%, the power supply efficiency of the embodiment is improved by 4.5%, and the PUE value of the data center can be obviously reduced.
In the ac/dc power supply structure of the data center described in this embodiment, the ac 10kV port adopts a modular cascade topology structure, and is formed by connecting a plurality of groups of power sub-modules in series in a low-voltage parallel high-voltage manner. Furthermore, the alternating current 10kV port of the power electronic transformer is composed of 3 groups of power modules, each group of power modules is connected by a plurality of power submodules through copper bars in a low-voltage parallel high-voltage series connection mode, each power submodule topology is composed of a bidirectional active bridge converter and an H bridge, a high-voltage side outgoing line is connected with a10 kV alternating current filter reactor, and a low-voltage side outgoing line is connected with a direct current breaker DC750V outgoing line. The direct current 240V port of the power electronic transformer consists of a direct current breaker, a bus capacitor, a half-bridge power unit, a filter reactor and a filter capacitor, wherein one end of the direct current breaker is connected with a direct current 750V bus, the other end of the direct current breaker is connected with the bus capacitor, one end of the bus capacitor is connected with the direct current breaker, the other end of the bus capacitor is connected with the power unit, the positive electrode and the negative electrode of the half-bridge power unit are respectively connected with the bus capacitor, the middle point of a bridge arm is connected with the filter reactor, one end of the filter reactor is connected with the middle point of the bridge arm of the half-.
In the ac/dc power supply structure of the data center in this embodiment, the dc 240V port is formed by a buck non-isolated converter.
In the ac/dc power supply structure of the data center according to this embodiment, the dc750V power distribution device 104 is configured to flexibly interconnect a dc750V port of the power electronic transformer a102 and a dc750V port of the power electronic transformer B103, so as to form a dc750V ring network for parallel operation;
the direct-current 750V power distribution device 104 is connected with the photovoltaic power generation equipment 105 and is used for grid-connected power generation of the photovoltaic power generation equipment 105.
Specifically, the direct-current 750V power distribution device 104 is connected to the photovoltaic power generation equipment 105, and is used for grid-connected power generation of the photovoltaic power generation equipment 105; renewable energy sources such as photovoltaic power generation and the like are connected into a green data center, however, electricity generated by the first stage of the renewable energy sources such as photovoltaic power generation and the like is direct current with the voltage of about 750V, a common alternating current and direct current power supply structure of the data center does not have the voltage of 750V, a first-stage voltage conversion link needs to be added to connect the photovoltaic power generation equipment 105, the electricity utilization efficiency of the photovoltaic power generation is reduced, and the reduction of the PUE of the data center is not facilitated.
The embodiment directly provides a direct-current 750V voltage port in the power electronic transformer, which is greatly convenient for the access of the photovoltaic power generation equipment 105, and meanwhile, the direct-current 750V port is a flexible interconnected ring network of the power electronic transformer A102 and the power electronic transformer B103 to run in parallel, so that the photovoltaic power generation equipment 105 can be connected to the grid for power generation through the power electronic transformer A102 or the power electronic transformer B103, and the power supply reliability of the photovoltaic power generation equipment 105 is improved.
In the ac/dc power supply structure of the data center according to this embodiment, the dc 240V power distribution device 106 is configured to flexibly interconnect the dc 240V port of the power electronic transformer a102 and the dc 240V port of the power electronic transformer B103, so as to form a dc 240V ring network for parallel operation.
Specifically, the power electronic transformer a102 and the power electronic transformer B103 are formed by the above arrangement, two-stage ring networks between the two transformers run in parallel, and the two power electronic transformers are mutual devices for full-hot backup, which is a function that the ordinary power frequency transformer 110 does not have due to the characteristics of its own electromagnetic ring network. When the power electronic transformer A102 and the power electronic transformer B103 run normally, the power electronic transformer A102 and the power electronic transformer B103 respectively bear 10850% of load of the load equipment, when one power electronic transformer fails, the load equipment 108 and the photovoltaic power generation equipment 105 can be seamlessly switched to the other power electronic transformer to run at 100% of load, and power supply reliability of the data center alternating current and direct current power supply structure is greatly improved.
In the ac/dc power supply structure of the data center according to this embodiment, the storage battery pack 107 is located between the dc 240V power distribution apparatus 106 and the load device 108, and the storage battery pack 107 is used for outputting dc power to the load device 108 when an ac input terminal of the load device 108 is in a short-time power failure, so as to ensure that the load device 108 supplies power uninterruptedly. Specifically, the storage battery pack 107 is located between the direct current 240V power distribution apparatus 106 and the load device 108, and is used for outputting direct current to the load device 108 when an alternating current input end of the load device 108 is in short-time power failure, so as to ensure that the load device 108 supplies power uninterruptedly; and after the ac input terminal resumes power supply, the battery pack 107 stops outputting and is in a floating state.
Specifically, the load devices 108 may be, but are not limited to, dual-powered server devices; for the dual-power-supply server equipment, because two power supply modules of the dual-power-supply server equipment are completely independent, the input ends are independently arranged, and the output ends are connected together in parallel, the input ends can adopt different power supply types. In this embodiment, a dual power input mode of one path of alternating current and one path of direct current is adopted to respectively supply power to an alternating current input end and a direct current input end of a dual power server device; an AC 10kV commercial power inlet line A is converted into 240V direct current through an AC 10kV distribution device A101, a power electronic transformer A102 and a power electronic transformer B103, and then the direct current is provided for load equipment 108 through a direct current 240V distribution device 106 to be input; an alternating current 10kV commercial power inlet line B passes through an alternating current 10kV power distribution device B109, is converted into 380V alternating current through a power frequency transformer 110, and then provides alternating current input for load equipment 108 through an alternating current 380V power distribution device 111.
In the ac/dc power supply structure of the data center according to this embodiment, the power frequency transformer 110 is a dual-port power frequency transformer 110, and the power frequency transformer 110 is provided with an ac 10kV port and an ac 380V port; specifically, exchange 10kV distribution device B109 with power frequency transformer 110 links to each other for export exchange 10kV commercial power inlet wire B way to power frequency transformer 110, turn into 380V alternating current with exchange 10kV commercial power inlet wire B way, provide load device 108's alternating current input, exchange 380V distribution device 111 with load device 108 links to each other for it carries out alternating current power supply to provide alternating current output for load device 108.
The above description is only for the preferred embodiment of the present invention, and the present invention is not limited to the above description, and although the present invention is disclosed in the preferred embodiment, it is not limited to the above description, and any person skilled in the art can make some changes or modifications to equivalent embodiments without departing from the scope of the present invention, but all the technical solutions of the present invention are within the scope of the present invention.
Claims (8)
1. An alternating current-direct current power supply structure of a data center is characterized in that: the system 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, a power frequency transformer and an alternating current 380V power distribution device;
the alternating current 10kV power distribution device A is respectively connected with the power electronic transformer A and the power electronic transformer B;
the direct-current 750V power distribution device is respectively connected with the power electronic transformer A and the power electronic transformer B;
the direct-current 750V power distribution device is connected with the photovoltaic power generation equipment;
the direct current 240V power distribution device is respectively connected with the power electronic transformer A and the power electronic transformer B;
the alternating current 10kV power distribution device B is connected with an alternating current 380V power distribution device through the power frequency transformer;
the direct current 240V power distribution device, the storage battery pack and the alternating current 380V power distribution device are all used for supplying power to load equipment.
2. The ac/dc power supply structure of data center according to claim 1, wherein: the power electronic transformer A and the power electronic transformer B are at least provided with three ports, and the three ports comprise an alternating current 10kV port, a direct current 750V port and a direct current 240V port.
3. The ac/dc power supply structure of the data center according to claim 2, wherein: the alternating current 10kV port adopts a modular cascade topology structure and is formed by connecting a plurality of groups of power sub-modules in series in a low-voltage parallel high-voltage mode.
4. The ac/dc power supply structure of the data center according to claim 2, wherein: the direct current 240V port is formed by adopting a buck non-isolated converter.
5. The ac/dc power supply structure of the data center according to claim 2, wherein: the direct-current 750V power distribution device is used for flexibly interconnecting a direct-current 750V port of the power electronic transformer A and a direct-current 750V port of the power electronic transformer B;
and the direct-current 750V power distribution device is connected with the photovoltaic power generation equipment and is used for grid-connected power generation of the photovoltaic power generation equipment.
6. The ac/dc power supply structure of data center according to claim 1, wherein: the direct current 240V power distribution device is used for flexibly interconnecting a direct current 240V port of the power electronic transformer A and a direct current 240V port of the power electronic transformer B.
7. The ac/dc power supply structure of data center according to claim 1, wherein: the storage battery pack is arranged between the direct current 240V power distribution device and the load equipment, and is used for outputting direct current to the load equipment when the alternating current input end of the load equipment is in short-time power failure, so that uninterrupted power supply of the load equipment is guaranteed.
8. The ac/dc power supply structure of data center according to claim 1, wherein: the power frequency transformer is a dual-port power frequency transformer, and is provided with an alternating current 10kV port and an alternating current 380V port.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11929622B2 (en) | 2018-08-29 | 2024-03-12 | Sean Walsh | Optimization and management of renewable energy source based power supply for execution of high computational workloads |
| US11962157B2 (en) | 2018-08-29 | 2024-04-16 | Sean Walsh | Solar power distribution and management for high computational workloads |
| US11967826B2 (en) | 2017-12-05 | 2024-04-23 | Sean Walsh | Optimization and management of power supply from an energy storage device charged by a renewable energy source in a high computational workload environment |
| US12081030B2 (en) | 2018-08-29 | 2024-09-03 | Sean Walsh | Solar power distribution and management for cryptocurrency mining |
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2021
- 2021-03-26 CN CN202120627001.4U patent/CN213585162U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11967826B2 (en) | 2017-12-05 | 2024-04-23 | Sean Walsh | Optimization and management of power supply from an energy storage device charged by a renewable energy source in a high computational workload environment |
| US11929622B2 (en) | 2018-08-29 | 2024-03-12 | Sean Walsh | Optimization and management of renewable energy source based power supply for execution of high computational workloads |
| US11962157B2 (en) | 2018-08-29 | 2024-04-16 | Sean Walsh | Solar power distribution and management for high computational workloads |
| US12081030B2 (en) | 2018-08-29 | 2024-09-03 | Sean Walsh | Solar power distribution and management for cryptocurrency mining |
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