CN114793012A - AC-DC hybrid data center power supply system and data center machine room - Google Patents
AC-DC hybrid data center power supply system and data center machine room Download PDFInfo
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- CN114793012A CN114793012A CN202110098375.6A CN202110098375A CN114793012A CN 114793012 A CN114793012 A CN 114793012A CN 202110098375 A CN202110098375 A CN 202110098375A CN 114793012 A CN114793012 A CN 114793012A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
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Abstract
The invention provides an alternating current-direct current hybrid data center power supply system and a data center machine room, aiming at the technical problem of high configuration cost caused by excessive redundancy configuration in the existing data center power supply system.
Description
Technical Field
The invention relates to the technical field of power supply, in particular to a power supply technology of a data center, and more particularly relates to an alternating current-direct current hybrid data center power supply system and a data center machine room.
Background
A data center is an infrastructure that supports critical digital services. In order to ensure high-reliability operation of a Power Supply system of a data center, a 2N UPS (Uninterruptible Power Supply) system is often configured by a UPS, so that a load still has another independent UPS for protection when one UPS fails or is overhauled. In recent years, internet companies begin to use one-way mains supply and one-way high-voltage direct-current supply, and compared with 2N UPS configuration, the utility power supply can improve the system energy efficiency and save the cost. However, as shown in fig. 1 or the publication date of 2016.04.20, the publication numbers are: chinese patent invention CN 103023131B: a data center direct current power supply system supplies power to load equipment through one path of high-voltage direct current and one path of alternating current commercial power, but the scheme has the following defects:
1) 2N transformers and bus-tie segmented designs are used, and related power distribution cost is high; for example, for a 1500kW load, this scheme would require the deployment of two 1600kVA transformers;
2) during fault/maintenance period of high voltage direct current, discharging is carried out by a battery direct-hanging output bus, and a loop of a commercial power direct supply side needs to rely on commercial power reliability during the period of recovering the high voltage direct current to a normal working state, but the commercial power reliability is inferior to that of UPS output;
3) the efficiency of the commercial power alternating current output is improved, but the reliability of the commercial power is not high.
Disclosure of Invention
Aiming at the limitation of the prior art, the invention provides a data center power supply system and a data center machine room, and the technical scheme adopted by the invention is as follows:
a power supply system of a data center comprises a plurality of power supply modules and a dual-power supply server; the power supply module and the dual-power supply server form a power supply loop; wherein:
the power supply module comprises a transformer, a low-voltage power distribution cabinet, an uninterruptible power supply, a battery and a direct-current converter; the input end of the transformer is used for connecting with commercial power, and the output end of the transformer is connected with the input end of the low-voltage power distribution cabinet; the output end of the low-voltage power distribution cabinet is connected with the input end of the uninterruptible power supply; the direct current output end of the uninterruptible power supply and the output end of the battery are connected with the input end of the direct current converter through a direct current bus; the direct current buses of the power supply modules are connected in parallel in a hand-in-hand connection mode through the fault maintenance switch;
the DC input end of the dual-power-supply server is connected with the output end of the DC converter of one power supply module, and the AC input end of the dual-power-supply server is connected with the AC output end of the uninterrupted power supply of the other power supply module.
Compared with the prior art, the method and the device have the advantages that the direct-current buses of the uninterrupted power supplies are connected in parallel, the power supply loop groups of the double-power-supply server loads corresponding to the uninterrupted power supplies are formed, so that the input power of the double-power-supply server loads is the alternating-current output of the uninterrupted power supply of one power supply module, and the output of the direct-current converter of the other power supply module forms alternating-current and direct-current mixed power supply, so that the power distribution cost is reduced, and the reliability of a power supply system is improved.
Preferably, the sum of the capacities of the uninterruptible power supplies of the power supply modules is not less than N +1/N, where N is the load capacity.
Preferably, the sum of the capacities of the dc converters of the power supply modules is not less than N, which is the load capacity.
As an optional scheme, when the mains supply input is normal, the working mode of the uninterruptible power supply adopts an economic operation mode or a double-conversion working mode.
As a preferable scheme, when the commercial power input is abnormal, the operating mode of the uninterruptible power supply adopts an inverter battery discharge mode.
As a preferable scheme, the number of the dual-power-supply servers is equal to that of the power supply modules.
Preferably, when the dc converter of one of the power supply modules fails: the dual power servers to which the failed dc converter is connected obtain sufficient input power from the ac input.
As a preferred scheme, when the uninterruptible power supply of one of the power supply modules fails: the direct current converter of the power supply module where the uninterruptible power supply with failure is located obtains input power supply from other power supply modules through the direct current bus; the duplicate power supply server connected with the uninterrupted power supply with failure obtains sufficient input power supply from the direct current input end.
As a preferred scheme, when the direct current bus of one of the power supply modules fails: the fault maintenance switches on the two sides of the section of the direct current bus with the fault failure are disconnected, the double-power-supply server connected with the uninterruptible power supply of the power supply module where the section of the direct current bus with the fault failure is located obtains the input power with the full amount from the direct current input end, and the double-power-supply server connected with the direct current converter of the power supply module where the section of the direct current bus with the fault failure is located obtains the input power with the full amount from the alternating current input end.
The present invention also provides the following:
a data center machine room comprises a power supply system, wherein the power supply system is the alternating current and direct current hybrid data center power supply system.
Drawings
Fig. 1 is an electrical topology diagram of a path of commercial power and a path of high voltage dc power supply system under 1500kW load in the prior art;
fig. 2 is an electrical topology schematic diagram of an ac-dc hybrid data center power supply system according to embodiment 1 of the present invention;
fig. 3 is a schematic current flow diagram of a power supply system of an ac/dc hybrid data center according to embodiment 1 of the present invention under a normal operation condition of a 1500kW load;
fig. 4 is a schematic current flow diagram of a power supply system of an ac-dc hybrid data center according to embodiment 1 of the present invention in a case of a 1500kW load dc converter failure;
fig. 5 is a schematic current flow diagram of a power supply system of an ac/dc hybrid data center in case of a 1500kW load uninterruptible power supply failure according to embodiment 1 of the present invention;
fig. 6 is a schematic current flow diagram of a power supply system of an ac-dc hybrid data center according to embodiment 1 of the present invention, in the case of a 1500kW load dc bus fault;
fig. 7 is an electrical topology schematic diagram of an ac-dc hybrid data center power supply system according to embodiment 2 of the present invention;
fig. 8 is a schematic current flow diagram of an ac/dc hybrid data center power supply system according to embodiment 2 of the present invention under a normal operation condition of a 2400kW load;
fig. 9 is a schematic current flow diagram of an ac-dc hybrid data center power supply system provided in embodiment 2 of the present invention in the case of an uninterruptible power supply fault with a 2400kW load;
description of reference numerals: 1. a power supply module; 11. comprises a transformer; 12. a low-voltage power distribution cabinet; 13. an uninterruptible power supply; 14. a battery; 15. a DC converter; 2. a dual-power server; 3. a fault maintenance switch.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent;
it should be understood that the embodiments described are only some embodiments of the present application, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the embodiments in the present application.
The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments of the present application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the application, as detailed in the appended claims. In the description of the present application, it is to be understood that the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not necessarily used to describe a particular order or sequence, nor are they to be construed as indicating or implying relative importance. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In addition, in the description of the present application, "a plurality" means two or more unless otherwise specified. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. The invention is further illustrated by the following figures and examples.
In order to solve the limitation of the prior art, the present embodiment provides a technical solution, and the technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.
Example 1
Referring to fig. 2, an ac-dc hybrid data center power supply system includes a plurality of power supply modules 1 and a dual power supply server 2; the power supply module 1 and the dual-power-supply server 2 form a power supply loop; wherein:
the power supply module 1 comprises a transformer 11, a low-voltage power distribution cabinet 12, an uninterruptible power supply 13, a battery 14 and a direct-current converter 15; the input end of the transformer is used for accessing commercial power, and the output end of the transformer is connected with the input end of the low-voltage power distribution cabinet 12; the output end of the low-voltage power distribution cabinet 12 is connected with the input end of the uninterruptible power supply 13; the direct-current output end of the uninterruptible power supply 13 and the output end of the battery 14 are connected with the input end of the direct-current converter 15 through a direct-current bus; the direct current buses of the power supply modules 1 are connected in parallel in a hand-in-hand connection mode through the fault maintenance switch 3;
the direct current input end of the dual power supply server 2 is connected with the output end of the direct current converter 15 of one power supply module 1, and the alternating current input end is connected with the alternating current output end of the uninterrupted power supply 13 of the other power supply module 1.
Compared with the prior art, the method and the device have the advantages that the direct-current buses of the uninterrupted power supplies are connected in parallel, the power supply circuit groups of the double-power-supply server loads corresponding to the uninterrupted power supplies are formed, the input power of the double-power-supply server loads is converted into the alternating-current output of the uninterrupted power supply of one power supply module, and the output of the direct-current converter of the other power supply module is converted into the alternating-current and direct-current mixed power supply, so that the power distribution cost is reduced, and the reliability of a power supply system is improved.
Specifically, the dual power supply server 2 represents a load side having a power supply selection function.
The hand-pulling wiring is characterized in that the devices are connected through a bus, and the bus refers to a shared passage on which a plurality of devices are connected in a parallel branch form, so that the bus can be also called a bus system.
The fault maintenance switch 3 is normally closed and can be opened when a direct current bus of one of the power supply modules 1 fails.
The uninterruptible power supply 13 consists of a rectifier, an inverter and a static bypass; in the power supply module 1, the output end of the low voltage power distribution cabinet 12 may be directly connected to the load end through an external maintenance bypass, so as to maintain power supply when a maintenance worker maintains the uninterruptible power supply 13.
As a preferred embodiment, the sum of the capacities of the uninterruptible power supplies 13 of the power supply modules 1 is not less than N +1/N, which is the load capacity.
As a preferred embodiment, the sum of the capacities of the dc converters 15 of the power supply modules 1 is not less than N, which is the load capacity.
As an alternative embodiment, when the mains supply is normal, the operation mode of the uninterruptible power supply 13 adopts an economic operation mode or a dual-conversion operation mode.
The economic operation mode is an ECO mode, and a high-efficiency mode similar to a commercial power direct supply mode can be achieved in the ECO mode; in the double conversion working mode, the power supply system is more reliable, but the efficiency is lower than that of the commercial power direct supply.
As a preferred embodiment, when the commercial power input is abnormal, the operation mode of the uninterruptible power supply 13 adopts an inverter battery discharge mode.
As a preferred embodiment, the number of the dual power supply servers 2 is equal to that of the power supply modules 1.
As a preferred embodiment, when the dc converter 15 of one of the power supply modules 1 fails: the dual power supply server 2 to which the failed dc converter 15 is connected receives a full amount of input power from the ac input.
As a preferred embodiment, when the uninterruptible power supply 13 of one of the power supply modules 1 fails: the direct current converter 15 of the power supply module 1 where the uninterruptible power supply 13 with the fault failure is located obtains input power supply from other power supply modules 1 through the direct current bus; the dual power supply server 2 connected with the failure uninterrupted power supply 13 obtains input power supply of full amount from the direct current input end
As a preferred embodiment, when the dc bus of one of the power supply modules 1 fails: the fault maintenance switches 3 on the two sides of the section of the direct current bus with the fault failure are disconnected, the dual-power-supply server 2 connected with the uninterruptible power supply 13 of the power supply module 1 with the section of the direct current bus with the fault failure obtains the sufficient input power from the direct current input end, and the dual-power-supply server 2 connected with the direct current converter 15 of the power supply module 1 with the section of the direct current bus with the fault failure obtains the sufficient input power from the alternating current input end.
Also taking the situation of 1500kW load capacity in the background art as an example, when the data center power supply system provided in this embodiment performs equipment configuration, as shown in fig. 3, the data center power supply system includes 3 power supply modules 1 and 3 dual power supply servers 2, and each dual power supply server 2 bears 500kW load capacity; in this embodiment, only 3 800kVA transformers need to be configured, and the uninterruptible power supplies 13 are configured according to N +1 capacities, that is, each uninterruptible power supply 13 is configured with a capacity of 750kVA, the sum of the capacities of the uninterruptible power supplies 13 of the power supply modules 1 is 2250kVA, and the sum of the capacities of the dc converters 15 of the power supply modules 1 is 1500 kW; the direct current bus can be 600V standard, and the direct current converter 15 can be a direct current converter converting 600V DC to 240V DC. Therefore, compared with the prior art, when the data center power supply system provided by the embodiment is used for equipment configuration, the configuration cost is saved.
The reliability of the data center power supply system provided by the present embodiment will be described with reference to various failure conditions, referring to fig. 3, in a normal operation condition, the ac output terminals of the upss 13 and the output terminals of the dc converters 15 respectively output 250kW of power supply.
Referring to fig. 4, when the dc converter 15 of one of the power supply modules 1 fails, the dual power supply server 2 connected to the failed dc converter 15 is powered by the uninterruptible power supply 13 of the other power supply module 1 at the other input end to output 500 kW.
Referring to fig. 5, when the ups 13 of one of the power supply modules 1 fails, the dual power server 2 connected to the failed ups 13 is powered by 500kW output from the dc converters 15 of the other power supply modules 1 at the other input end, and the input end of the dc converter 15 in the power supply module 1 in which the ups 13 fails obtains 250kW input from the dc bus.
Referring to fig. 6, when the failure of the dc bus causes a failure of one of the power supply modules 1, the fault maintenance switches 3 on both sides of the dc bus are turned off, and the remaining two power supply modules 1 continue to ensure power supply of the load end.
Example 2
Referring to fig. 7 and 8, in embodiment 2, the configuration of the 2400kW load is adopted in the embodiment of the present invention, the data center power supply system includes 4 power supply modules 1 and 4 dual power servers 2, the capacity of the uninterruptible power supply 13 of each power supply module 1 is 800kVA, the sum of the capacities of the uninterruptible power supplies 13 is 3200kVA, the capacity of the dc converter 15 of each power supply module 1 is 600kW, and the sum of the capacities of the dc converters 15 is 2400 kW.
Referring to fig. 8, in a normal operation situation, the ac output terminals of the upss 13 and the output terminals of the dc converters 15 respectively supply 300kW of power to the outputs.
Referring to fig. 9, when the uninterruptible power supply 13 of one of the power supply modules 1 fails, the dual power supply server 2 connected to the failed uninterruptible power supply 13 outputs 600kW from the dc converters 15 of the other power supply modules 1 at the other input end for power supply, and meanwhile, the input end of the dc converter 15 in the power supply module 1 in which the uninterruptible power supply 13 fails obtains 300kW of input from the dc bus.
The description of other failure conditions in this embodiment is similar to the example in embodiment 1, and is not repeated here.
Example 3
A data center machine room comprises a power supply system, wherein the power supply system is the alternating current-direct current hybrid data center power supply system in embodiment 1 or embodiment 2.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. An alternating current-direct current hybrid data center power supply system is characterized by comprising a plurality of power supply modules (1) and a dual-power server (2); the power supply module (1) and the dual-power server (2) form a power supply loop; wherein:
the power supply module (1) comprises a transformer (11), a low-voltage power distribution cabinet (12), an uninterruptible power supply (13), a battery (14) and a direct-current converter (15); the input end of the transformer is used for being connected with commercial power, and the output end of the transformer is connected with the input end of the low-voltage power distribution cabinet (12); the output end of the low-voltage power distribution cabinet (12) is connected with the input end of the uninterruptible power supply (13); the direct current output end of the uninterrupted power supply (13) and the output end of the battery (14) are connected with the input end of the direct current converter (15) through a direct current bus; direct current buses of the power supply modules (1) are connected in parallel in a hand-in-hand connection mode through the fault maintenance switch (3);
the direct current input end of the dual-power server (2) is connected with the output end of the direct current converter (15) of one power supply module (1), and the alternating current input end of the dual-power server is connected with the alternating current output end of the uninterrupted power supply (13) of the other power supply module (1).
2. The ac/dc hybrid data center power supply system according to claim 1, wherein the sum of the capacities of the uninterruptible power supplies (13) of the power supply modules (1) is not less than N +1/N, where N is a load capacity.
3. The ac-dc hybrid data center power supply system according to claim 1, wherein the sum of the capacities of the dc converters (15) of the power supply modules (1) is not less than N, N ═ load capacity.
4. The ac-dc hybrid data center power supply system according to claim 1, wherein the uninterruptible power supply (13) is operated in an economic operation mode or a double conversion operation mode when the mains power input is normal.
5. The ac-dc hybrid data center power supply system according to claim 1, wherein the uninterruptible power supply (13) operates in an inverter battery discharge mode when the utility power input is abnormal.
6. The ac/dc hybrid data center power supply system according to claim 1, wherein the dual power servers (2) are equal in number to the power supply modules (1).
7. The ac/dc hybrid data center power supply system according to claim 1, wherein, when the dc converter (15) of one of the power supply modules (1) fails: the dual power supply server (2) to which the failed dc converter (15) is connected receives a full input supply from the ac input.
8. The ac-dc hybrid data center power supply system according to claim 1, wherein, when the uninterruptible power supply (13) of one of the power supply modules (1) fails: the direct current converter (15) of the power supply module (1) where the uninterruptible power supply (13) with the failure is located obtains input power supply from other power supply modules (1) through the direct current bus; the duplicate power supply server (2) connected with the failure uninterrupted power supply (13) obtains sufficient input power supply from the direct current input end.
9. The ac-dc hybrid data center power supply system according to claim 1, wherein when a dc bus of one of the power supply modules (1) fails: the fault maintenance switches (3) on the two sides of the section of the fault failed direct-current bus are disconnected, the dual-power-supply server (2) connected with the uninterruptible power supply (13) of the power supply module (1) where the section of the fault failed direct-current bus is located obtains full-amount input power from the direct-current input end, and the dual-power-supply server (2) connected with the direct-current converter (15) of the power supply module (1) where the section of the fault failed direct-current bus is located obtains full-amount input power from the alternating-current input end.
10. A data centre room comprising a power supply system, wherein the power supply system is the ac/dc hybrid data centre power supply system of any one of claims 1 to 9.
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| CN115313615A (en) * | 2022-08-30 | 2022-11-08 | 安徽明德源能科技有限责任公司 | Data center power supply system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115313615A (en) * | 2022-08-30 | 2022-11-08 | 安徽明德源能科技有限责任公司 | Data center power supply system |
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