CN114938066A - Data center power supply system and method - Google Patents

Abstract

The present application discloses a data center power supply system and method, and relates to the technical field of power supply and distribution. The data center power supply system includes: a high-voltage AC power supply, a power electronic transformer, a lithium battery system, a DC bus, a load and a monitoring module; the high-voltage AC power supply and the The power supply port of the power electronic transformer is connected, and the output port of the power electronic transformer is connected to the DC bus; the power electronic transformer is used to convert the high-voltage power output from the high-voltage AC power source into low-voltage power and transmit it to the DC bus; the lithium battery system and the load are respectively connected with DC bus connection; lithium battery system is used to provide electrical energy for the load when the high-voltage AC power supply is cut off; power electronic transformer and lithium battery system are connected to the monitoring module respectively; the monitoring module is used to monitor the work of the power electronic transformer and lithium battery system status, and control of power electronic transformers and lithium battery systems. The present application applies to the scenario of powering a data center.

Description

A data center power supply system and method

technical field

The present application relates to the technical field of power supply and distribution, and in particular, to a data center power supply system and method.

Background technique

At present, the data center power supply system generally includes 10KV high voltage (medium voltage) distribution system, power frequency transformer, low voltage distribution system, 10kV generator set or low voltage diesel generator set, uninterruptible power supply (UPS), 240V DC power supply, etc. composition. Specifically, the power output by high-voltage power distribution needs to be converted into low-voltage power through a power frequency transformer, and then the low-voltage power is transmitted through a multi-level low-voltage power distribution system, and then the power is transmitted to the load (High Voltage Direct Current, HVDC). Electrical equipment).

In the above solution, each system included in the data center power supply system needs to be configured with a large number of input and output devices, resulting in a large area of the data center power supply system, so centralized settings are generally required. Moreover, in the power supply system of the data center, multi-stage voltage conversion is required between the power supply and the electrical equipment to convert the high-voltage power output from the high-voltage power supply to the low-voltage power required by the load. Therefore, the power supply efficiency of the power supply system is low, the power loss is large, and it is inconvenient to access green energy such as photovoltaics.

SUMMARY OF THE INVENTION

The present application provides a data center power supply system and method, which are used to improve the power supply efficiency of the power supply system, reduce power loss, and facilitate access to green energy such as photovoltaics.

To achieve the above object, the application adopts the following technical solutions:

In a first aspect, a data center power supply system is provided. The data center power supply system includes: a high-voltage AC power supply, a power electronic transformer, a lithium battery system, a DC bus, a load and a monitoring module; the high-voltage AC power supply is connected to the power supply port of the power electronic transformer , the output port of the power electronic transformer is connected to the DC bus; the power electronic transformer is used to convert the high-voltage power output from the high-voltage AC power supply into low-voltage power and transmit it to the DC bus; the lithium battery system and the load are respectively connected to the DC bus; the lithium battery system It is used to provide power to the load when the high-voltage AC power supply is cut off; the power electronic transformer and the lithium battery system are connected to the monitoring module respectively; the monitoring module is used to monitor the working status of the power electronic transformer and the lithium battery system, and to control the power electronic transformer and lithium battery systems.

In a possible implementation manner, the data center power supply system further includes: photovoltaic power generation equipment; the photovoltaic power generation equipment is a high-voltage photovoltaic power generation equipment, the power electronic transformer includes a first power supply port and a second power supply port, the high-voltage AC power supply and the power electronic transformer The high-voltage photovoltaic power generation equipment is connected to the second power supply port of the power electronic transformer; or, the photovoltaic power generation equipment is a low-voltage photovoltaic power generation equipment, the low-voltage photovoltaic power generation equipment is connected with the DC bus, and the low-voltage photovoltaic power generation equipment is also connected with the monitoring Module connection.

In a possible implementation manner, the data center power supply system further includes: a DC generator; the DC generator is connected to the DC bus, and the DC generator is used to provide electrical energy for the load when the high-voltage AC power supply is cut off; the DC generator also Connect with the monitoring module.

In a possible implementation manner, the data center power supply system further includes: an inverter and an AC bus, the load includes a first AC load and a second AC load, and the first AC load includes a lithium battery; the input port of the inverter is connected to The DC bus is connected, and the output port of the inverter is connected with the AC bus; the inverter is used to convert the input DC into AC; the first AC load and the second AC load are respectively connected with the AC bus, and the first AC load and the second AC load The AC loads are respectively connected with the monitoring modules.

In a possible implementation manner, the lithium battery system includes multiple lithium battery packs, the multiple lithium battery packs are connected in parallel, and each lithium battery pack corresponds to a battery management system BMS and a bidirectional DC converter; the BMS and the bidirectional DC converter are used for Control the lithium battery pack to charge and discharge.

In a possible implementation manner, the data center power supply system further includes: a plurality of intelligent switches; the intelligent switches are respectively arranged at the output ports of the DC bus and the electronic transformer, the lithium battery system, the load, the low-voltage photovoltaic power generation equipment, the DC generator, Between the inverters, the intelligent switch is also arranged between the AC bus and the first AC load and the second AC load.

In a second aspect, a data center power supply method is provided, the data center power supply method is applied to a data center power supply system, and the data center power supply method includes: when the monitoring module detects that the high-voltage AC power supply is powered off, controlling the lithium battery system and photovoltaic power generation equipment Provide power for the load; monitor the working status of the high-voltage AC power supply and the lithium battery system through the monitoring module, obtain the power-off information of the high-voltage AC power supply and the discharge information of the lithium battery system; start the DC generator as the load according to the power-off information and discharge information Provide power.

In a possible implementation manner, the method further includes: when the monitoring module detects that the high-voltage AC power supply is powered off, controlling the intelligent switch to disconnect the AC bus and the second AC load; when the monitoring module detects that the high-voltage AC power supply restores power supply When , the intelligent switch is controlled to connect the AC bus and the second AC load.

In a possible implementation manner, the method further includes: charging the lithium battery system when the monitoring module detects that the high-voltage AC power supply is restored to supply power.

In a possible implementation manner, the monitoring module is used to monitor the operation of the power supply system of the data center in real time, and adjust the power supply form of the power supply system of the data center according to the working status of the high-voltage AC power supply, photovoltaic power generation equipment, and lithium battery system.

In a third aspect, a data center power supply device includes: a processor and a memory; wherein the memory is used to store one or more programs, and the one or more programs include computer-executed instructions, and when the data center power supply device runs, the processor The computer-executed instructions stored in the memory are executed to cause the data center power supply device to perform a data center power supply method according to the second aspect.

A fourth aspect provides a computer-readable storage medium storing one or more programs, the one or more programs comprising instructions that, when executed by a computer, cause the computer to perform a data center power supply as in the second aspect method.

The present application provides a data center power supply system and method, which are applied in the scenario of supplying power to a data center. The data center power supply system includes: high-voltage AC power supply, power electronic transformer, lithium battery system, DC bus, load and monitoring module; the high-voltage AC power supply is connected to the power supply port of the power electronic transformer, and the output port of the power electronic transformer is connected to the DC bus; power The electronic transformer is used to convert the high-voltage power output from the high-voltage AC power supply into low-voltage power and transmit it to the DC bus; the lithium battery system and the load are respectively connected to the DC bus; the lithium battery system is used to provide the load when the high-voltage AC power is cut off. Electric energy; power electronic transformer and lithium battery system, respectively connected with monitoring module; monitoring module is used to monitor the working status of power electronic transformer and lithium battery system, and control power electronic transformer and lithium battery system. Therefore, the high-voltage power output from the high-voltage AC power supply is converted into low-voltage power for the load to use through the power electronic transformer, and combined with the monitoring module and the lithium battery system, when the monitoring module detects the power failure of the high-voltage AC power supply, the lithium battery system provides the load with the power supply. electrical energy. Thus, the uninterrupted power supply of the data center is guaranteed, the power supply efficiency of the power supply system is improved, and the power loss is reduced.

Description of drawings

FIG. 1 is a schematic structural diagram of an existing data center power supply system provided by an embodiment of the present application;

FIG. 2 is a schematic structural diagram 1 of a data center power supply system provided by an embodiment of the present application;

3 is a second schematic structural diagram of a data center power supply system according to an embodiment of the present application;

FIG. 4 is a third schematic structural diagram of a data center power supply system according to an embodiment of the present application;

FIG. 5 is a fourth schematic structural diagram of a data center power supply system according to an embodiment of the present application;

FIG. 6 is a schematic structural diagram 5 of a data center power supply system provided by an embodiment of the present application;

FIG. 7 is a schematic flow chart 1 of a method for supplying power to a data center according to an embodiment of the present application;

FIG. 8 is a second schematic flowchart of a data center power supply method according to an embodiment of the present application;

FIG. 9 is a third schematic flowchart of a method for supplying power to a data center according to an embodiment of the present application;

FIG. 10 is a schematic structural diagram of a data center power supply device according to an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application.

In the description of this application, unless otherwise stated, "/" means "or", for example, A/B can mean A or B. In this article, "and/or" is only an association relationship to describe the associated objects, which means that there can be three kinds of relationships, for example, A and/or B, which can mean that A exists alone, A and B exist at the same time, and B exists alone these three situations. Further, "at least one" and "plurality" refer to two or more. The words "first" and "second" do not limit the quantity and execution order, and the words "first", "second" and the like do not limit certain differences.

As shown in Figure 1, the current data center power supply system generally includes a 10KV high-voltage (medium-voltage) power distribution system, a power frequency transformer, a low-voltage power distribution system, a 10kV generator set or a low-voltage diesel generator set, and an Uninterruptible Power Supply (UPS). , 240V DC power supply, etc. Specifically, the power output by high-voltage power distribution needs to be converted into low-voltage power through a power frequency transformer, and then the low-voltage power is transmitted through a multi-level low-voltage power distribution system, and then the power is transmitted to the load through High Voltage Direct Current (HVDC). (Electrical equipment). Each system needs to be equipped with a large number of input and output devices, covering a large area, so it generally needs to be set up centrally, and the system needs to undergo multi-level transformation, the system power supply efficiency is low, the power loss of the line is large, and it is inconvenient for green energy such as photovoltaics. access.

A data center power supply system provided by the embodiment of the present application can be applied to a data center power supply method. FIG. 2 shows a schematic structural diagram of the power supply system of the data center. As shown in FIG. 2 , the data center power supply system 20 includes: a high-voltage AC power supply 21 , a power electronic transformer 22 , a lithium battery system 23 , a DC bus 24 , a load 25 and a monitoring module 26 .

Specifically, the high-voltage AC power source 21 is connected to the power supply port of the power electronic transformer 22, and the output port of the power electronic transformer 22 is connected to the DC bus 24; the power electronic transformer 22 is used for converting the high-voltage power output from the high-voltage AC power source 21 into low-voltage power to the DC bus 24.

Specifically, the lithium battery system 23 and the load 25 are respectively connected to the DC bus 24; the lithium battery system 23 is used to provide electrical energy to the load 25 when the high-voltage AC power supply 21 is powered off.

Specifically, the power electronic transformer 22 and the lithium battery system 23 are respectively connected to the monitoring module 26; the monitoring module 26 is used to monitor the working states of the power electronic transformer 22 and the lithium battery system 23, and to control the power electronic transformer 22 and the lithium battery system 23 .

Optionally, the DC bus 24 may be a 240V DC bus.

Optionally, the high-voltage AC power source 21 may be a 10kV AC power source, and the 10kV AC power source may be a commercial power source equipped with a 10kV high-voltage generator, or may be an independent 10kV commercial power source.

Optionally, the monitoring module 26 is specifically used to monitor the operation of each device included in the data center power supply system 20 in real time, and to supply power in time according to the working states of the high-voltage AC power supply 21, the power electronic transformer 22, and the lithium battery system 23. conversion and control.

As a possible implementation manner, as shown in FIG. 3 , the data center power supply system 20 further includes: a photovoltaic power generation device 27; the photovoltaic power generation device 27 is a high-voltage photovoltaic power generation device 271, and the power electronic transformer 22 includes a first power supply port and a second power supply port. Power supply ports, the high-voltage AC power source 21 is connected to the first power supply port of the power electronic transformer 22 , and the high-voltage photovoltaic power generation device 271 is connected to the second power supply port of the power electronic transformer 22 .

Optionally, the high-voltage photovoltaic power generation equipment 271 may be a 10kV photovoltaic power generation equipment.

It can be understood that the power electronic transformer 22 can be a power electronic transformer with dual-port input (that is, including two power supply ports) and single-port output, so as to be used for the high-voltage AC power supply 21 and the high-voltage photovoltaic power generation device 271 as the input power supply at the same time, and the output voltage is The 240V DC power is used by the load 25.

As a possible implementation, the photovoltaic power generation device 27 is a low voltage photovoltaic power generation device 272 connected to the DC bus 24 and also connected to the monitoring module 26 .

Optionally, the low-voltage photovoltaic power generation equipment 272 may be a 240V photovoltaic power generation equipment.

It can be understood that the power electronic transformer 22 can also be a power electronic transformer with single-port input (that is, including one power supply port) and single-port output, so as to use only the high-voltage AC power supply 21 as the input power supply, and the output voltage is 240V DC power for the load 25. .

Optionally, the photovoltaic power generation device 27 is used as a supplementary power source for the high-voltage AC power source 21, providing part or nearly all of the power supply, without considering the relationship between the photovoltaic power generation capacity and the load power consumption, and the need for grid-connected power generation.

As a possible implementation manner, as shown in FIG. 4 , the data center power supply system 20 further includes: a DC generator 28 ; the DC generator 28 is connected to the DC bus 24 , and the DC generator 28 is used to power off the high-voltage AC power supply 21 At the time, the load 25 is provided with electric power; and the DC generator 28 is also connected with the monitoring module 26 .

Optionally, when the high-voltage AC power supply 21 is an independent commercial power supply, the DC generator 28 can be optionally configured, so that when the high-voltage AC power supply 21 is powered off and the battery capacity of the photovoltaic power generation equipment 27 and the lithium battery system 23 is insufficient, The normal operation of the data center power supply system 20 is guaranteed.

It can be understood that the DC bus 24 can be connected in parallel with the power electronic transformer 22 , the DC generator 28 , the photovoltaic power generation device 27 and the lithium battery system 23 . In addition, the photovoltaic power generation equipment 27 may be a high-voltage photovoltaic power generation equipment 271 or a low-voltage photovoltaic power generation equipment 272. The working voltage of the high-voltage photovoltaic power generation equipment 271 or the low-voltage photovoltaic power generation equipment 272 is different, and can be determined according to the construction scale of the data center or the actual configuration of photovoltaic power generation. Certainly.

The high-voltage photovoltaic power generation equipment 271 needs to be connected to different power supply ports of the power electronic transformer 22 in parallel with the high-voltage AC power supply 21;

Optionally, when the high-voltage AC power supply 21 supplies power normally, the photovoltaic power generation device 27 serves as a supplementary power supply device for the high-voltage AC power supply 21 , and together with the high-voltage AC power supply 21 supplies power to the load 25 .

Optionally, when the high-voltage AC power supply 21 is powered off, the lithium battery system 23 and the photovoltaic power generation device 27 are jointly used as power supply devices to supply power to the load 25 .

As a possible implementation, as shown in FIG. 5 , the data center power supply system 20 further includes: an inverter 29 and an AC bus 30 , and the load 25 includes a first AC load 251 and a second AC load 252 . The first AC load 251 includes a lithium battery; the input port of the inverter 29 is connected to the DC bus 24, and the output port of the inverter 29 is connected to the AC bus 30; the inverter 29 is used to convert the input DC power into AC power; the first AC load 251 and the second AC load 252 are respectively connected to the AC bus 30 , and the first AC load 251 and the second AC load 252 are respectively connected to the monitoring module 26 .

Optionally, the first AC load 251 can be understood as a guaranteed AC load, and the second AC load 252 can be understood as a non-guaranteed AC load.

Optionally, the difference between the first AC load 251 and the second AC load 252 is whether a lithium battery is included. The first AC load 251 includes a lithium battery, and the first AC load 251 can be powered by the lithium battery when the power is turned off. , to ensure the normal operation of the first AC load 251 .

Optionally, to supply power to the first AC load 251 and the second AC load 252, the inverter 29 needs to be connected in parallel on the DC bus 24 to convert the DC power output by the DC bus 24 into AC power, so as to be the first AC load. 251 and the second AC load 252 provide power.

Optionally, the AC bus 30 may be a 220V AC bus or a 380V AC bus, and the AC load may be equipment such as an air conditioner in a data center.

Optionally, when the high-voltage AC power supply 21 is powered off, the monitoring module 26 can control the automatic disconnection of the power supply for the second AC load 252. At the same time, the monitoring module 26 monitors the power-off information of the high-voltage AC power supply 21 and the lithium battery system 23. The discharge information of the data center starts the DC generator 28 to ensure the normal operation of the data center power supply system 20 .

As a possible implementation manner, as shown in FIG. 6 , the lithium battery system 23 includes multiple lithium battery packs 231 , the multiple lithium battery packs 231 are connected in parallel, and each lithium battery pack 231 corresponds to a battery management system (Battery Management System, BMS). ) and a bidirectional DC converter 232; the BMS and the bidirectional DC converter 232 are used to control the lithium battery pack 231 to charge and discharge.

It can be understood that the lithium battery system 23 is composed of a plurality of lithium battery packs 231 , a plurality of BMSs and a bidirectional DC converter 232 , which can realize the parallel connection of dozens of groups of batteries. charge and discharge management.

As a possible implementation, the data center power supply system 20 further includes: a plurality of smart switches; the smart switches are respectively arranged on the DC bus 24 and the output port of the electronic transformer, the lithium battery system 23, the load 25, the low-voltage photovoltaic power generation equipment 272, Between the DC generator 28 and the inverter 29 , an intelligent switch is also provided between the AC bus 30 and the first AC load 251 and the second AC load 252 .

Optionally, the smart switch can be realized by an electronic switch or a contactor. When the high-voltage AC power supply 21 is powered off, the power supply of part of the load can be cut off in time, and when the high-voltage AC power supply 21 is restored, the power supply of the load can also be restored in time.

Optionally, the data center power supply system 20 can be used as a distributed power supply for a large data center, and can be configured at the end of the computer room, close to the server equipment; or as an independent power supply system, as an independent power supply for a micro data center.

The present application provides a data center power supply system and method, which are applied in the scenario of supplying power to a data center. The data center power supply system includes: high-voltage AC power supply, power electronic transformer, lithium battery system, DC bus, load and monitoring module; the high-voltage AC power supply is connected to the power supply port of the power electronic transformer, and the output port of the power electronic transformer is connected to the DC bus; power The electronic transformer is used to convert the high-voltage power output from the high-voltage AC power supply into low-voltage power and transmit it to the DC bus; the lithium battery system and the load are respectively connected to the DC bus; the lithium battery system is used to provide the load when the high-voltage AC power is cut off. Electric energy; power electronic transformer and lithium battery system, respectively connected with monitoring module; monitoring module is used to monitor the working status of power electronic transformer and lithium battery system, and control power electronic transformer and lithium battery system. Therefore, the high-voltage power output from the high-voltage AC power supply is converted into low-voltage power for the load to use through the power electronic transformer, and combined with the monitoring module and the lithium battery system, when the monitoring module detects the power failure of the high-voltage AC power supply, the lithium battery system provides the load with the power supply. electrical energy. Thus, the uninterrupted power supply of the data center is guaranteed, the power supply efficiency of the power supply system is improved, and the power loss is reduced.

A data center power supply system provided by the embodiment of the present application can be used as a distributed power supply of a large data center or as an independent power supply system of a micro data center, and the system structure can be adjusted according to the actual usage. The data center power supply system reduces the intermediate voltage conversion link, and directly transforms the high-voltage power output from the high-voltage power supply into the low-voltage DC power supply available for the load, which improves the power supply efficiency of the system. inside, saving space. At the same time, it can choose to connect high-voltage photovoltaic power generation equipment or low-voltage photovoltaic power generation equipment, which reduces the use of fossil energy-based thermal power supply. And the lithium battery system is equipped with BMS and bidirectional DC converter, which can directly manage its own charge and discharge, which solves the problem that the power electronic transformer cannot manage the charge and discharge of parallel batteries.

The following describes a data center power supply method provided by an embodiment of the present application with reference to the accompanying drawings.

As shown in FIG. 7 , a data center power supply method provided by an embodiment of the present application is applied to a data center power supply system, including S201-S203:

S201 , when the monitoring module detects that the high-voltage AC power supply is powered off, control the lithium battery system and the photovoltaic power generation equipment to provide electrical energy for the load.

In this embodiment of the present application, when the monitoring module in the power supply system of the data center detects that the high-voltage AC power supply is powered off, it can control the lithium battery system and the photovoltaic power generation equipment to provide power for the load; and monitor the high-voltage AC power supply and the lithium battery system through the monitoring module. The working state is used to obtain the power-off information of the high-voltage AC power supply and the discharge information of the lithium battery system; thus, according to the power-off information and the discharge information, the DC generator is further started to provide electrical energy for the load. Further, when the monitoring module detects that the high-voltage AC power supply is powered off, the intelligent switch can also be controlled to disconnect the AC bus and the second AC load to save power.

Optionally, the monitoring module in the data center power supply system is used to monitor the working state of each device in the data center power supply system, specifically for monitoring the working state of the power electronic transformer and the lithium battery system, and to control the power electronic transformer and Lithium battery system. In order to timely convert and control the power supply according to the working state of the high-voltage AC power supply, power electronic transformer, and lithium battery system.

As a possible implementation, the lithium battery system and photovoltaic power generation equipment are used as backup power sources, which can provide power to the load in time when the high-voltage AC power supply is cut off, so as to ensure the normal operation of the data center power supply system.

Optionally, the photovoltaic power generation device can be a high-voltage photovoltaic power generation device, and the high-voltage photovoltaic power generation device is connected to the power supply port of the power electronic transformer, so that the high-voltage electric energy output by the high-voltage photovoltaic power generation device is converted into low-voltage electric energy through the power electronic transformer, and transmitted to the direct current. The bus is used by the load.

Optionally, when the photovoltaic power generation device is a high-voltage photovoltaic power generation device, the power electronic transformer can be a power electronic transformer with dual power supply ports input and single port output, so that the high voltage AC power supply can be connected to the first power supply port of the power electronic transformer, and the high voltage The photovoltaic power generation equipment is connected to the second power supply port of the power electronic transformer, and simultaneously supplies power to the data center power supply system through the high-voltage AC power supply and the high-voltage photovoltaic power generation equipment.

Optionally, the photovoltaic power generation equipment can also be a low-voltage photovoltaic power generation equipment, and the low-voltage photovoltaic power generation equipment can be directly connected with the DC bus, so as to directly transmit the low-voltage power output by the low-voltage photovoltaic power generation equipment to the DC bus for the load to use.

Optionally, when the photovoltaic power generation equipment is a low-voltage photovoltaic power generation equipment, the power electronic transformer can be a power electronic transformer with a single power supply port input and a single port output, so that the high-voltage AC power supply can be connected with the power supply port of the power electronic transformer, and the low-voltage photovoltaic power generation The equipment is directly connected to the DC bus, and supplies power to the data center power supply system through high-voltage AC power supply and low-voltage photovoltaic power generation equipment at the same time.

Optionally, the high-voltage AC power supply may be a 10kV AC power supply, and the 10kV AC power supply may be a mains power supply equipped with a 10kV high-voltage generator, or an independent 10kV mains power supply.

S202 , monitoring the working state of the high-voltage AC power supply and the lithium battery system through the monitoring module, and acquiring the power-off information of the high-voltage AC power supply and the discharge information of the lithium battery system.

In one design, the monitoring module is used to monitor the operation of the data center power supply system in real time, and adjust the power supply form of the data center power supply system according to the working status of the high-voltage AC power supply, photovoltaic power generation equipment, and lithium battery systems.

Optionally, when the monitoring module monitors the working status of the high-voltage AC power supply and the lithium battery system in real time, the power-off information of the high-voltage AC power supply and the discharge information of the lithium battery system can be obtained in real time, so that the monitoring module detects that the high-voltage AC power supply is disconnected. When the power is turned off, the lithium battery system can be controlled to discharge in time to ensure the uninterrupted power supply of the data center power supply system.

Optionally, the monitoring module is connected to each device included in the power supply system of the data center, and obtains the working status of each device in real time through sensors, so that when an abnormal situation occurs in a certain device (such as a power failure of a high-voltage AC power supply), timely emergency measures (such as controlling the discharge of the lithium battery system to ensure the normal operation of the data center power supply system).

S203 , according to the power-off information and the discharge information, start the DC generator to provide electric energy for the load.

Optionally, when the power-off information of the high-voltage AC power supply is monitored by the monitoring module: power-off state, and the discharge information of the lithium battery system is: discharge-state, the DC generator can be started to provide power to the load according to the power-off information and the discharge information. Electric energy to ensure the normal operation of the data center power supply system through the lithium battery system and the DC generator at the same time, and provide electric energy for the load.

Optionally, the DC generator is used to provide electrical energy for the load when the high-voltage AC power supply is cut off; and the DC generator is also connected to the monitoring module, so as to monitor the working state of the DC generator in real time through the monitoring module.

The present application provides a data center power supply system and method, which are applied in the scenario of supplying power to a data center. The data center power supply system includes: high-voltage AC power supply, power electronic transformer, lithium battery system, DC bus, load and monitoring module; the high-voltage AC power supply is connected to the power supply port of the power electronic transformer, and the output port of the power electronic transformer is connected to the DC bus; power The electronic transformer is used to convert the high-voltage power output from the high-voltage AC power supply into low-voltage power and transmit it to the DC bus; the lithium battery system and the load are respectively connected to the DC bus;

The lithium battery system is used to provide electrical energy for the load when the high-voltage AC power supply is cut off; the power electronic transformer and the lithium battery system are connected to the monitoring module respectively; the monitoring module is used to monitor the working status of the power electronic transformer and the lithium battery system, and control the Power electronic transformers and lithium battery systems. Therefore, the high-voltage power output from the high-voltage AC power supply is converted into low-voltage power for the load to use through the power electronic transformer, and combined with the monitoring module and the lithium battery system, when the monitoring module detects the power failure of the high-voltage AC power supply, the lithium battery system provides the load with the power supply. electrical energy. Thus, the uninterrupted power supply of the data center is guaranteed, the power supply efficiency of the power supply system is improved, and the power loss is reduced.

In one design, in order to control the power supply of the second AC load when the monitoring module detects that the high-voltage AC power supply is powered off, as shown in FIG. 8 , in a data center power supply method provided by an embodiment of the present application, the specific The following S301-S302 may also be included:

S301 , when the monitoring module detects that the high-voltage AC power supply is powered off, the intelligent switch is controlled to disconnect the connection between the AC bus and the second AC load.

S302 , when the monitoring module detects that the high-voltage AC power supply is restored to supply power, control the intelligent switch to connect the AC bus and the second AC load.

Optionally, the data center power supply system is provided with an intelligent switch at the connection of each device, so as to control the connection or disconnection between the various devices through the intelligent switch.

As a possible implementation, the second AC load can be auxiliary equipment such as air conditioners and lighting equipment in the data center. When the high-voltage AC power supply is cut off, the power supply of these devices can be disconnected through a smart switch to save power.

As a possible implementation manner, when the monitoring module detects that the high-voltage AC power supply is restored, the intelligent switch control can be used to restore the power supply of the second AC load in time.

In this embodiment of the present application, the connection state of the device can be flexibly controlled through the intelligent switch, so as to control the power supply of the device through the intelligent switch according to the conversion situation of the power supply. Improve the flexibility of the data center power supply system.

In one design, in order to charge the lithium battery system when the monitoring module monitors that the high-voltage AC power supply is restored, as shown in FIG. Include the following S401:

S401 , charging the lithium battery system when the monitoring module detects that the high-voltage AC power supply is restored to supply power.

Optionally, the lithium battery system may include multiple lithium battery packs, the multiple lithium battery packs are connected in parallel, each lithium battery pack corresponds to a battery management system BMS and a bidirectional DC converter, and the lithium battery is controlled by the BMS and the bidirectional DC converter. The group is charged and discharged.

Optionally, since the lithium battery system and photovoltaic power generation equipment are controlled to provide power to the load when the high-voltage AC power supply is cut off, after a certain period of time, the power in the lithium battery system will be seriously insufficient, so that the monitoring module detects the high-voltage AC power. When the power supply is restored, the lithium battery system can be charged in time.

Optionally, BMS is a management system for lithium batteries. When lithium batteries are mass-produced, it is not easy to control the quality of the products. When the battery cells leave the factory, there are generally slight differences in power, and with the actual operating area environment, aging, excessive Due to factors such as charging and over-discharging, the inconsistency between batteries becomes more and more obvious, and the battery efficiency and life become worse. The purpose of BMS is to enhance the utilization efficiency of the battery, prevent excessive charging and excessive discharging of the battery, increase the service life of the battery, and monitor the state of the battery. It is an operating system that manages, controls and uses lithium battery packs.

Optionally, the bidirectional DC converter realizes the bidirectional transmission of energy, which is equivalent to two unidirectional DC-DC converters in function, which can greatly reduce the volume and weight of the system and realize the charging or discharging of the lithium battery system.

In the embodiment of the present application, when the monitoring module detects that the high-voltage AC power supply is restored, the lithium battery system can be charged in time to ensure sufficient power in the lithium battery system and improve the performance of the data center power supply system.

The embodiment of the present application proposes a data center power supply system and method. The data center power supply system integrates a transformer, a power distribution system, a UPS system/240V DC system, has few conversion links, high system efficiency, and small footprint, and can be used as a The distributed power supply of large data centers can be flexibly set up centrally or installed at the end of the computer room near the server side. It can also be used as an independent power supply system for micro data centers, and can be connected to 10KV or 240V photovoltaic and other green energy sources, reducing the need for The use of fossil energy-based thermal power, and a complete battery and generator backup power plan after the mains power outage is proposed.

The solutions provided by the embodiments of the present application have been introduced above mainly from the perspective of methods. In order to realize the above-mentioned functions, it includes corresponding hardware structures and/or software modules for executing each function. Those skilled in the art should easily realize that, in conjunction with the units and algorithm steps of each example described in the embodiments disclosed herein, the embodiments of the present application can be implemented in hardware or a combination of hardware and computer software. Whether a function is performed by hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.

In this embodiment of the present application, a resource management and allocation apparatus may be divided into functional modules according to the foregoing method examples. For example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. . The above-mentioned integrated modules can be implemented in the form of hardware, and can also be implemented in the form of software function modules. Optionally, the division of modules in the embodiment of the present application is schematic, and is only a logical function division, and another division manner may be used in actual implementation.

This embodiment of the present application provides another possible schematic structural diagram of the data center power supply device involved in the foregoing embodiment. As shown in FIG. 10 , a data center power supply device 60 is used to improve the power supply efficiency of the power supply system, reduce power loss, and facilitate the access of green energy such as photovoltaics, for example, for implementing a data center shown in FIG. 7 . Power supply method. The data center power supply device 60 includes a processor 601 , a memory 602 and a bus 603 .

The processor 601 and the memory 602 may be connected through a bus 603 .

The processor 601 is the control center of the communication device, and may be a processor or a general term for multiple processing elements. For example, the processor 601 may be a general-purpose central processing unit (central processing unit, CPU), or may be other general-purpose processors, or the like. Wherein, the general-purpose processor may be a microprocessor or any conventional processor or the like.

As an example, the processor 601 may include one or more CPUs, such as CPU 0 and CPU 1 shown in FIG. 10 .

Memory 602 may be read-only memory (ROM) or other type of static storage device that can store static information and instructions, random access memory (RAM), or other type of static storage device that can store information and instructions The dynamic storage device can also be an electrically erasable programmable read-only memory (electrically erasable programmable read-only memory, EEPROM), a magnetic disk storage medium or other magnetic storage devices, or can be used to carry or store data in the form of instructions or data structures. desired program code and any other medium that can be accessed by a computer, but is not limited thereto.

As a possible implementation manner, the memory 602 may exist independently of the processor 601, and the memory 602 may be connected to the processor 601 through a bus 603 for storing instructions or program codes. When the processor 601 calls and executes the instructions or program codes stored in the memory 602, the method for supplying power to a data center provided by the embodiment of the present application can be implemented.

In another possible implementation manner, the memory 602 may also be integrated with the processor 601 .

The bus 603 may be an industry standard architecture (Industry Standard Architecture, ISA) bus, a peripheral device interconnect (Peripheral Component Interconnect, PCI) bus, or an extended industry standard architecture (Extended Industry Standard Architecture, EISA) bus or the like. The bus can be divided into address bus, data bus, control bus and so on. For ease of presentation, only one thick line is used in FIG. 10, but it does not mean that there is only one bus or one type of bus.

It should be noted that the structure shown in FIG. 10 does not constitute a limitation on the power supply device 60 of the data center. In addition to the components shown in FIG. 10, the data center power supply 60 may include more or less components than shown, or a combination of certain components, or a different arrangement of components.

Optionally, as shown in FIG. 10 , the data center power supply device 60 provided in this embodiment of the present application may further include a communication interface 604 .

The communication interface 604 is used to connect with other devices through a communication network. The communication network may be an Ethernet, a wireless access network, a wireless local area network (wireless local area network, WLAN), and the like. The communication interface 604 may include a receiving unit for receiving data, and a transmitting unit for transmitting data.

In one design, in the data center power supply device provided by the embodiment of the present application, the communication interface may also be integrated in the processor.

From the description of the above embodiments, those skilled in the art can clearly understand that, for the convenience and brevity of the description, only the division of the above functional units is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional units according to requirements, that is, the internal structure of the device is divided into different functional units to complete all or part of the functions described above. For the specific working process of the system, apparatus and unit described above, reference may be made to the corresponding process in the foregoing method embodiments, and details are not described herein again.

Embodiments of the present application further provide a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, and when a computer executes the instructions, the computer executes each step in the method flow shown in the above method embodiments.

The embodiments of the present application provide a computer program product containing instructions, when the instructions are executed on a computer, the computer is made to execute a data center power supply method in the above method embodiments.

The computer-readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus or device, or any combination of the above. More specific examples (non-exhaustive list) of computer-readable storage media include: electrical connections having one or more wires, portable computer disks, hard disks. Random Access Memory (RAM), Read-Only Memory (ROM), Erasable Programmable Read Only Memory (EPROM), Register, Hard Disk, Optical Fiber, Portable Compact Disk Read-Only Memory (Compact Disc Read-Only Memory, CD-ROM), optical storage device, magnetic storage device, or any other form of computer-readable storage medium of the above in suitable combination, or valued in the art. An exemplary storage medium is coupled to the processor, such that the processor can read information from, and write information to, the storage medium. Of course, the storage medium can also be an integral part of the processor. The processor and the storage medium may be located in an Application Specific Integrated Circuit (ASIC). In the embodiments of the present application, the computer-readable storage medium may be any tangible medium containing or storing a program, and the program may be used by or in combination with an instruction execution system, apparatus, or device.

Since the data center power supply equipment, computer-readable storage medium, and computer program product in the embodiments of the present application can be applied to the above methods, the technical effects that can be obtained can also refer to the above method embodiments. This will not be repeated here.

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any changes or substitutions within the technical scope disclosed in the present application should be covered within the protection scope of the present application.

Claims (12)

1. A data center power supply system, the data center power supply system comprising: the system comprises a high-voltage alternating-current power supply, a power electronic transformer, a lithium battery system, a direct-current bus, a load and a monitoring module;

the high-voltage alternating-current power supply is connected with a power supply port of the power electronic transformer, and an output port of the power electronic transformer is connected with the direct-current bus; the power electronic transformer is used for converting high-voltage electric energy output by the high-voltage alternating-current power supply into low-voltage electric energy and transmitting the low-voltage electric energy to the direct-current bus;

the lithium battery system and the load are respectively connected with the direct current bus; the lithium battery system is used for providing electric energy for the load when the high-voltage alternating-current power supply is powered off;

the power electronic transformer and the lithium battery system are respectively connected with the monitoring module; the monitoring module is used for monitoring the working states of the power electronic transformer and the lithium battery system and controlling the power electronic transformer and the lithium battery system.

2. The data center power supply system of claim 1, further comprising: a photovoltaic power generation device;

the photovoltaic power generation equipment is high-voltage photovoltaic power generation equipment, the power electronic transformer comprises a first power supply port and a second power supply port, the high-voltage alternating-current power supply is connected with the first power supply port of the power electronic transformer, and the high-voltage photovoltaic power generation equipment is connected with the second power supply port of the power electronic transformer;

or the photovoltaic power generation equipment is low-voltage photovoltaic power generation equipment, the low-voltage photovoltaic power generation equipment is connected with the direct current bus, and the low-voltage photovoltaic power generation equipment is further connected with the monitoring module.

3. The data center power supply system according to claim 1 or 2, further comprising: a DC generator;

the direct current generator is connected with the direct current bus and used for providing electric energy for the load when the high-voltage alternating current power supply is powered off;

the direct current generator is also connected with the monitoring module.

4. The data center power supply system of claim 3, further comprising: the system comprises an inverter and an alternating current bus, wherein the load comprises a first alternating current load and a second alternating current load, and the first alternating current load comprises a lithium battery;

the input port of the inverter is connected with the direct current bus, and the output port of the inverter is connected with the alternating current bus; the inverter is used for converting input direct current into alternating current;

the first and second ac loads are connected to the ac bus, respectively, and the first and second ac loads are connected to the monitoring module, respectively.

5. The data center power supply system according to claim 4, wherein the lithium battery system comprises a plurality of lithium battery packs, the plurality of lithium battery packs are connected in parallel, and each lithium battery pack corresponds to one Battery Management System (BMS) and a bidirectional DC converter; the BMS and the bidirectional DC converter are used for controlling the lithium battery pack to be charged and discharged.

6. The data center power supply system of claim 5, further comprising: a plurality of intelligent switches;

the intelligent switch is respectively arranged between the direct current bus and the output port of the electronic transformer, between the lithium battery system and the load and between the low-voltage photovoltaic power generation equipment and the direct current generator and between the inverters, and the intelligent switch is also arranged between the alternating current bus and the first alternating current load and between the second alternating current loads.

7. A data center power supply method is applied to a data center power supply system, and comprises the following steps:

when the monitoring module monitors that the high-voltage alternating-current power supply is powered off, the lithium battery system and the photovoltaic power generation equipment are controlled to provide electric energy for the load;

monitoring the working states of the high-voltage alternating-current power supply and the lithium battery system through the monitoring module, and acquiring power-off information of the high-voltage alternating-current power supply and discharge information of the lithium battery system;

and starting a direct current generator to provide electric energy for the load according to the power failure information and the discharge information.

8. The method of claim 7, further comprising:

when the monitoring module monitors that the high-voltage alternating-current power supply is powered off, the intelligent switch is controlled to disconnect the alternating-current bus from the second alternating-current load;

and when the monitoring module monitors that the high-voltage alternating-current power supply recovers power supply, the intelligent switch is controlled to be connected with the alternating-current bus and the second alternating-current load.

9. The method of claim 7, further comprising:

and when monitoring that the high-voltage alternating-current power supply recovers power supply, the monitoring module charges the lithium battery system.

10. The method according to claim 7, wherein the monitoring module is used for monitoring the operation of the data center power supply system in real time and adjusting the power supply form of the data center power supply system according to the working states of the high-voltage alternating-current power supply, the photovoltaic power generation equipment and the lithium battery system.

11. A data center power supply apparatus, comprising: a processor and a memory; wherein the memory is configured to store one or more programs, the one or more programs including computer-executable instructions that, when executed by the data center power supply equipment, cause the data center power supply equipment to perform a data center power supply method of any one of claims 7-10 by executing the computer-executable instructions stored in the memory.

12. A computer readable storage medium storing one or more programs, the one or more programs comprising instructions, which when executed by a computer, cause the computer to perform a data center power supply method of any of claims 7-10.

Images