CN118801382A - Data Center Flexible Resource Pooling Energy Router - Google Patents

Abstract

The invention relates to the technical fields of data centers and industrial production, in particular to a flexible resource pooling energy router of a data center, which comprises the following components: each alternating current basic unit comprises a high-voltage alternating current port and one or two low-voltage alternating current ports, and each direct current basic unit comprises at least one third direct current port; the high-voltage alternating current port of each alternating current basic unit is connected to a section of high-voltage alternating current bus through an alternating current switch or a change-over switch, and the low-voltage alternating current port of each alternating current basic unit is connected to at least one IT device; the first direct current port of each alternating current basic unit and the third direct current port of each direct current basic unit are connected to a common direct current bus, or the positive electrode and the negative electrode of the third direct current port of each direct current basic unit are respectively connected to the positive electrode and the negative electrode of the second direct current port of each alternating current basic unit. Therefore, the problems of low capacity utilization rate and the like of the existing 2N and DR framework power supply and distribution system are solved.

Description

Data Center Flexible Resource Pooling Energy Router

Technical Field

The invention relates to the technical field of data center and industrial production, and in particular to a data center flexible resource pooling energy router.

Background Art

As digital technology penetrates into all areas of the economy and society, new digital industries such as blockchain and cloud computing are gradually growing, the digital economy is booming, the total amount of data in society is showing explosive growth, and the demand for data resource storage, computing and application has increased significantly. Data centers are the cornerstone of the development of the digital economy. They operate 24 hours a day, and electricity costs account for 60%-70% of total operating costs. The scale is growing rapidly. With the transformation and upgrading of my country's industries and the continuous expansion of the scale of data centers, their power consumption will continue to rise.

"The issue of green development of data centers has received widespread attention from all walks of life." On the one hand, data centers consume a lot of electricity and have a high power load; on the other hand, the construction of new power systems requires high-tech support such as cloud computing and 5G. Computing power scheduling is of great significance in increasing the proportion of renewable energy power application, reducing energy costs, and enhancing power grid security. "Therefore, building a low-cost, energy-efficient data center is crucial to the development of science and technology and the economy.

As shown in Figure 1, my country's data centers currently mainly use the 2N power supply and distribution architecture, that is, the electrical components of the two power supply circuits need to be configured according to the load rated capacity. The advantage is that the two power supply circuits are isolated from each other and easy to operate and maintain, but it will lead to high construction costs for the power supply and distribution system and low capacity utilization of distribution equipment. The DR power supply and distribution architecture can increase the capacity utilization of distribution equipment from 50% of 2N to 66.7%, but the battery is still configured according to the 2N architecture, and the crossover of multiple power supplies will lead to complex operation and maintenance. Considering that the currently used uninterruptible power supply basically uses power electronic devices for rectification and inversion, the loss is significant and is not conducive to energy saving.

In other words, the existing data center UPS solution based on the typical 2N architecture power supply and distribution system is mature, but it still has the following shortcomings:

(1) Each IT device requires two UPS power supplies, and each UPS can independently power the IT device, which results in a large number of batteries, high costs, and a large maintenance workload;

(2) The capacity utilization rate of power distribution equipment based on the 2N architecture, such as transformers and distribution cabinets, is low, which greatly increases the cost of the power distribution system. Even though the capacity utilization rate of the DR architecture is improved compared to the 2N architecture, it is still relatively low.

(3) Whether it is AC or DC UPS, it uses rectification or inverter devices, which increases power loss;

(4) Batteries occupy a large area, increasing the operating costs of data centers;

(5) For medium-density or high-density computer rooms, the power load needs to independently design a UPS-based power supply reliability protection system, which makes the power supply and distribution system decentralized and complex, which is not conducive to intensive management.

It can be seen that the current problems of high cost, low capacity utilization, and high loss of power supply and distribution equipment in data centers have seriously restricted the development of digitalization.

Summary of the invention

The present invention provides a data center flexible resource pooling energy router to solve the problems of low capacity utilization, large power loss, complex structure and difficulty in intensive management of existing 2N and DR architecture power supply and distribution systems, large number of batteries required, large floor space, high cost and heavy maintenance workload.

An embodiment of the present invention provides a data center flexible resource pooling energy router, comprising: each AC basic unit comprises a high-voltage AC port, a distribution subunit, a converter subunit, one or two low-voltage AC ports, a first DC port and a second DC port, and each DC basic unit comprises at least one third DC port;

Each of the distribution subunits comprises a first port, a second port and a third or fourth port, and the converter subunit comprises an AC side port, a fourth DC port and a fifth DC port;

The high-voltage AC port of each AC basic unit is connected to at least one section of high-voltage AC busbar through an AC switch or a conversion switch, the first port of the distribution subunit is connected to the high-voltage AC port, the second port of the distribution subunit is connected to the AC side port of the converter subunit, the third or fourth port of the distribution subunit is connected to one or two low-voltage AC ports of each AC basic unit, the fourth DC port of the converter subunit is connected to the first DC port of each AC basic unit, the fifth DC port of the converter subunit is connected to the second DC port of each AC basic unit, and one or two low-voltage AC ports of each AC basic unit are connected to a power port of at least one IT device;

The positive electrode of the first DC port of each AC basic unit is connected to the positive electrode of the common DC bus, and the negative electrode of the first DC port of each AC basic unit is connected to the negative electrode of the common DC bus;

The positive pole and negative pole of the third DC port of each DC basic unit are respectively connected to the positive pole and negative pole of the common DC bus, or the positive pole and negative pole of the third DC port of each DC basic unit are respectively connected to the positive pole and negative pole of the second DC port of each AC basic unit.

Optionally, the power distribution subunit further includes at least one transformer, an incoming line switch, a high-speed switch and at least one outgoing line switch, and the converter subunit includes at least one bidirectional AC/DC converter and an upper DC switch, wherein:

The high-voltage side of each transformer is connected to the first port of the distribution subunit, the low-voltage side of each transformer is connected to the first interface of the incoming switch, the second interface of the incoming switch is connected to the first interface of the high-speed switch, the second interface of the high-speed switch is connected to the second port of the distribution subunit, the second port of the distribution subunit is connected to one end of the at least one outgoing switch, and the other end of the at least one outgoing switch is connected to the third or fourth port of the distribution subunit;

The AC side port of each bidirectional AC/DC converter is connected to the AC side port of the converter subunit, the DC side port of each bidirectional AC/DC converter is connected to the first interface of the upper DC switch, the first interface of the upper DC switch is connected to the fifth DC port of each AC basic unit, and the second interface of the upper DC switch is connected to the fourth DC port of the converter subunit.

Optionally, each DC basic unit further includes any one of three types: a type I DC basic subunit, a type II DC basic subunit and a type III DC basic subunit, wherein:

The I-type DC basic subunit includes a first lower DC switch and a first DC power generation device, wherein the first interface of the first lower DC switch is connected to the third DC port of the corresponding DC basic unit, and the second interface of the first lower DC switch is connected to the first DC power generation device;

The type II DC basic subunit includes a second lower port DC switch, at least one bidirectional DC/DC converter and a second DC power generation device, wherein the first interface of the second lower port DC switch is connected to the third DC port of the corresponding DC basic unit, the second interface of the second lower port DC switch is connected to the first interface of the bidirectional DC/DC converter, and the second interface of the bidirectional DC/DC converter is connected to the second DC power generation device;

The type III DC basic subunit includes a third lower DC switch, at least one AC/DC rectifier and an AC power generation device, the first interface of the third lower DC switch is connected to the third DC port of the DC basic unit, the second interface of the third lower DC switch is connected to the DC side port of the AC/DC rectifier, and the AC side port of the AC/DC rectifier is connected to the AC power generation device.

Optionally, the first DC power generation device includes but is not limited to at least one of non-persistent power generation devices such as super capacitors or lithium batteries.

Optionally, the second DC power generation device includes but is not limited to at least one of a non-persistent power generation device based on a supercapacitor, a lead-acid battery, a photovoltaic cell, etc., or a persistent power generation device based on a fuel cell, wherein the fuel cell includes at least one of a hydrogen fuel cell and a solid-state fuel cell.

Optionally, the AC power generation device includes but is not limited to at least one of a non-persistent power generation device based on a flywheel or the like and a persistent power generation device based on a diesel generator or the like.

Optionally, for an IT device with N capacity, two AC basic units with the same capacity and each containing only one low-voltage AC port are selected, and each of the low-voltage AC ports is respectively connected to one power port of the dual power supplies of the IT device, and at the same time, a group of DC basic units with a capacity not less than N is selected, and the group of DC basic units is composed of r DC basic units with a capacity not less than N/r, and the first DC ports of the two AC basic units are connected to the common DC bus, and the group of DC basic units are respectively connected to the common DC bus or to the second DC port of the AC basic unit, forming a 2N power supply architecture basic unit, wherein N is a positive number and r is a positive integer;

When the group of DC basic units selects a persistent power generation device as a backup power supply, according to the national standard A-level requirements of the data center, the distribution subunits in the two AC basic units are configured to have a capacity of not less than N/2, and the converter subunits in the two AC basic units are configured to have a capacity of not less than N/2. According to the Uptime Tier IV level requirements, the distribution subunits in the two AC basic units are configured to have a capacity of not less than N/2, and the converter subunits in the two AC basic units are configured to have a capacity of not less than N.

When the group of DC basic units does not select a long-lasting power generation device as a backup power supply, in accordance with the national standard A-level requirements of the data center, the distribution sub-units in the two AC basic units are configured to have a capacity of no less than N, and the converter sub-units in the two AC basic units are configured to have a capacity of no less than N/2. In accordance with the Uptime Tier IV level requirements, the distribution sub-units in the two AC basic units are configured to have a capacity of no less than N, and the converter sub-units in the two AC basic units are configured to have a capacity of no less than N.

Optionally, for m+1 IT devices with N capacities, m+1 AC basic units with the same capacity are selected, each of the AC basic units contains two low-voltage AC ports, the 2(m+1) low-voltage AC ports are connected in a hand-in-hand manner, and are respectively connected to one power port of the dual power supplies of the m+1 IT devices, and at the same time, a group of DC basic units with a capacity not less than (m+1)•N are selected, the group of DC basic units is composed of r DC basic units with a capacity not less than [(m+1)/r]•N, the first DC ports of the m+1 AC basic units are connected to the common DC bus, and the third DC ports of the group of DC basic units are respectively connected to the common DC bus or to the second DC port of the AC basic unit, forming a (m+1)/m DR power supply architecture basic unit, wherein N is a positive number, r is a positive integer, and m is a positive integer greater than or equal to 2;

When the group of DC basic units selects a persistent power generation device as a backup power supply: according to the national standard A-level requirements of data centers, the distribution sub-units in the at least m+1 AC basic units are configured to have a capacity of not less than N, and the converter sub-units in the at least m+1 AC basic units are configured to have a capacity of not less than N; according to the Uptime Tier IV level requirements, the distribution sub-units in the at least m+1 AC basic units are configured to have a capacity of not less than N, and the converter sub-units in the at least m+1 AC basic units are configured to have a capacity of not less than [(m+1)/m]N;

When the group of DC basic units does not select a long-lasting power generation device as a backup power supply: in accordance with the national standard A requirements for data centers, the distribution sub-units in the at least m+1 AC basic units are configured with a capacity of no less than [(m+1)/m]•N, and the converter sub-units in the at least m+1 AC basic units are configured with a capacity of no less than N. In accordance with the UptimeTier IV level requirements, the distribution sub-units in the at least m+1 AC basic units are configured with a capacity of no less than [(m+1)/m]•N, and the converter sub-units in the at least m+1 AC basic units are configured with a capacity of no less than [(m+1)/m]•N.

The data center flexible resource pooling energy router proposed in the embodiment of the present invention applies a flexible power distribution technology based on DC, combines a multi-port energy router with the core ideas of the data center 2N, DR, and N+x (x=1,2,...N-1) architecture, and can realize resource pooling of power supply and distribution equipment and batteries; the application of this resource pooling technology can not only reduce the capacity of batteries and power distribution equipment from 2N to N+x, greatly reducing the cost of the data center power supply and distribution system, but also greatly improve the equipment capacity utilization rate, and because of the use of direct supply of city electricity, it can effectively reduce power loss, providing favorable protection for digital development.

Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and/or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

FIG1 is a schematic diagram of a 2N architecture power supply and distribution system of an existing data center;

FIG2 is a schematic diagram of the structure of a 2N architecture data center flexible resource pooling energy router provided by an embodiment of the present invention;

FIG3 is a schematic diagram of the structure of an energy router connected to two DC bus sections according to an embodiment of the present invention;

4 is a schematic diagram of the structure of a power distribution subunit and a converter subunit provided according to an embodiment of the present invention;

Figure 5 (a) shows a thyristor and bypass switch combination, Figure 5 (b) shows an IGCT and bypass switch combination, Figure 5 (c) shows a permanent magnet switch and bypass switch combination, and Figure 5 (d) shows an IGBT and bypass switch combination;

Figure 6 (a) shows the combination of IGBT and disconnector, Figure 6 (b) shows the combination of IGCT and disconnector, Figure 6 (c) shows the combination of IGBT plus diode and disconnector, and Figure 6 (d) shows the combination of fast fuse and DC circuit breaker.

FIG7 is a schematic structural diagram of a DC basic unit provided according to an embodiment of the present invention;

FIG8 (a) is a schematic diagram of a DC basic unit connected to a first DC port according to an embodiment of the present invention;

FIG8 (b) is a schematic diagram of a DC basic unit connected to a second DC port according to an embodiment of the present invention;

FIG9 (a) is a schematic diagram of a 2N architecture energy router in which a diesel generator-based permanent power generation device is installed on the DC side according to an embodiment of the present invention;

FIG9 (b) is a schematic diagram of a 2N architecture energy router in which a diesel generator-based permanent power generation device is installed on a medium voltage AC side according to an embodiment of the present invention;

FIG10 (a) is a schematic diagram of a DR architecture energy router in which a diesel generator-based persistent power generation device is installed on the DC side according to an embodiment of the present invention;

FIG10( b ) is a schematic diagram of a DR architecture energy router in which a diesel generator-based permanent power generation device is installed on a medium voltage AC side according to an embodiment of the present invention.

Description of reference numerals:

10-Data center flexible resource pooling energy router, 100-AC basic unit, 101-high voltage AC port, 102-distribution subunit, 1021-transformer, 1022-incoming switch, 1023-high speed switch, 1024-outgoing switch, 103-converter subunit, 1031-fourth DC port, 1032-fifth DC port, 1033-bidirectional AC/DC converter, 1034-upper DC switch, 104-low voltage AC port, 105-first DC port port, 106-the second DC port, 200-each DC basic unit, 201-the third DC port, 202-type I DC basic subunit, 2021-the first lower port DC switch, 2022-the first DC power generation device, 203-type II DC basic subunit, 2031-the second lower port DC switch, 2032-the bidirectional DC/DC converter, 2033-the second DC power generation device, 204-type III DC basic subunit, 2041-the third lower port DC switch, 2042- AC/DC rectifier, 2043-the AC power generation device, 300-the common DC bus, 400-the first IT device, 500-the second IT device and 600-the third IT device.

DETAILED DESCRIPTION

Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

The following describes the data center flexible resource pooling energy router of the embodiment of the present invention with reference to the accompanying drawings. In view of the problems mentioned in the above background technology center that the existing 2N architecture power supply and distribution system has low capacity utilization, large power loss, complex structure and is difficult to manage intensively, and requires a large number of batteries, a large footprint, high cost and a large maintenance workload, the present invention provides a data center flexible resource pooling energy router, in which, based on the core concept of the data center 2N, DR, power supply and distribution architecture, the flexible DC distribution technology is applied to realize the decoupling of the 2N, DR, N+x (x=1,2,...N-1) distribution architecture, and a new generation of low-cost, low-loss, high-capacity utilization, battery maintenance-free data center flexible resource pooling energy router is proposed. Based on this energy router, resource pooling of batteries and power supply and distribution equipment can be realized. Compared with the traditional data center architecture solution, the application of resource pooling technology can halve the battery capacity, and then the flexible distribution technology can be used to achieve flexible energy interaction of multi-channel distribution, which can not only greatly reduce the capacity of distribution equipment, but also realize integrated protection of IT equipment and power loads; based on the direct supply of AC power, the power loss can be effectively reduced, and the power supply efficiency can be increased from about 95% to more than 99%; the automatic operation and maintenance technology based on batteries can not only greatly reduce the operation and maintenance workload but also make full use of the battery charging and discharging energy, which is beneficial to the data center to promote carbon emission reduction.

Specifically, FIG2 is a schematic diagram of the structure of a 2N architecture data center flexible resource pooling energy router provided in an embodiment of the present invention.

As shown in FIG. 2 , the data center flexible resource pooling energy router 10 includes: a plurality of AC basic units 100 , a plurality of DC basic units 200 and a common DC bus 300 .

Each AC basic unit 100 includes a high-voltage AC port 101 , a distribution subunit 102 , a converter subunit 103 , one or two low-voltage AC ports 104 , a first DC port 105 and a second DC port 106 .

Specifically, as shown in FIG3 , each distribution subunit 102 includes a first port, a second port and a third or fourth port, the converter subunit 103 includes an AC side port, a fourth DC port 1031 and a fifth DC port 1032, and the high-voltage AC port 101 of each AC basic unit can be connected to at least one section of high-voltage AC busbar through an AC switch or a conversion switch. The first port of the distribution subunit 102 is connected to the high-voltage AC port 101, the second port of the distribution subunit 102 is connected to the AC side port of the converter subunit 103, the third or fourth port of the distribution subunit 102 is connected to one or two low-voltage AC ports 104 of each AC basic unit, and the fourth DC port 1031 of the converter subunit is connected to each AC The first DC port 105 of the DC basic unit, the fifth DC port 1032 of the converter subunit is connected to the second DC port 106 of each AC basic unit, one or two low-voltage AC ports 104 of each AC basic unit are connected to a power port of at least one IT device, the positive and negative poles of the first DC port 105 of each AC basic unit are connected to the positive and negative poles of the common DC bus 300, the positive and negative poles of the third DC port 201 of each DC basic unit 200 are respectively connected to the positive and negative poles of the common DC bus 300, or the positive and negative poles of the third DC port 201 of each DC basic unit 200 are respectively connected to the positive and negative poles of the second DC port 106 of each AC basic unit. It should be noted that the two ways of connecting the third DC port 201 of the DC basic unit 200 can be selected according to actual conditions, and it is not necessary for the two connection ways to exist at the same time.

In some embodiments, as shown in FIG. 4 , the distribution subunit 102 further includes at least one transformer 1021 , an incoming line switch 1022 , a high-speed switch 1023 and at least one outgoing line switch 1024 , and the converter subunit 103 includes at least one bidirectional AC/DC converter 1033 and an upper DC switch 1034 .

The high-voltage side of each transformer 1021 is connected to the first port of the distribution subunit 102, the low-voltage side of each transformer 1021 is connected to the first interface of the incoming switch 1022, the second interface of the incoming switch 1022 is connected to the first interface of the high-speed switch 1023, the second interface of the high-speed switch 1023 is connected to the second port of the distribution subunit 102, the second port of the distribution subunit 102 is connected to one end of at least one outgoing switch 1024, if the number of outgoing switches 1024 is 1, the other end is connected to the third or fourth port of the distribution subunit 102, if the number of outgoing switches 1024 is 2, the other end is respectively connected to the third and fourth ports of the distribution subunit 102.

The DC side port of each bidirectional AC/DC converter 1033 is connected to the AC side port of the converter subunit 103, and the DC side port of each bidirectional AC/DC converter 1033 is connected to the first interface of the upper DC switch 1034, and the second interface of the upper DC switch 1034 is connected to the fifth DC port 1032 of each AC basic unit, and the second interface of the upper DC switch 1034 is connected to the fourth DC port 1031 of the converter subunit 103.

It should be noted that, as shown in Figure 5 (a)-(d), the high-speed switch 1023 can select at least one of a conventional anti-parallel thyristor parallel bypass switch, a conventional IGCT parallel bypass switch or a conventional permanent magnet high-speed switch parallel bypass switch, and can also be used in combination of multiple parallel switches; as shown in Figure 6 (a)-(d), the upper DC switch 1034 can select at least one of an IGCT and isolating switch combination, an IGBT and isolating switch combination or a fast fuse and DC circuit breaker combination, and can also be used in combination of multiple parallel switches.

Furthermore, as shown in FIG3 , the common DC bus 300 can be divided into a DC bus section I and a DC bus section II, and the left AC basic unit and the right AC basic unit can be connected to two sections of the DC bus respectively, and the two sections of the DC bus are connected through a DC bus tie switch.

In some embodiments, as shown in FIG. 7 , each DC basic unit 200 further includes any one of three types: a type I DC basic subunit 202 , a type II DC basic subunit 203 , and a type III DC basic subunit 204 , wherein:

The I-type DC basic subunit 202 includes a first lower port DC switch 2021 and a first DC generator 2022, wherein the first interface of the first lower port DC switch 2021 is connected to the third DC port 201 of the corresponding DC basic unit 200, and the second interface of the first lower port DC switch 2021 is connected to the first DC generator 2022;

The type II DC basic subunit 203 includes a second lower port DC switch 2031, at least one bidirectional DC/DC converter 2032 and a second DC power generation device 2033, wherein the first interface of the second lower port DC switch 2031 is connected to the third DC port 201 of the corresponding DC basic unit 200, the second interface of the second lower port DC switch 2031 is connected to the first interface of the bidirectional DC/DC converter 2032, and the second interface of the bidirectional DC/DC converter 2032 is connected to the second DC power generation device 2033;

The type III DC basic subunit 204 includes a third lower DC switch 2041, at least one AC/DC rectifier 2042 and an AC power generation device 2043, the first interface of the third lower DC switch 2041 is connected to the third DC port 201 of the DC basic unit 200, the second interface of the third lower DC switch 2041 is connected to the DC side port of the AC/DC rectifier 2042, and the AC side port of the AC/DC rectifier 2042 is connected to the AC power generation device 2043.

It should be noted that, as shown in Figure 6 (a)-(d), the first lower DC switch 2021, the second lower DC switch 2031, and the third lower DC switch 2041 can select at least one of an IGCT and an isolating switch combination, an IGBT and an isolating switch combination, or a fast fuse and a DC circuit breaker combination, or multiple parallel combinations can be used.

In the actual implementation process, as shown in FIG8 , in the I-type DC basic subunit 202, the first interface of the first lower DC switch 2021 can be connected to the third DC port 201 of the corresponding DC basic unit 200, as shown in FIG8 (a), the third DC port 201 is connected to the first DC port 105 of the AC basic unit through the common DC bus 300, as shown in FIG8 (b), the third DC port 201 can also be directly connected to the second DC port 106 of the AC basic unit, and the second interface of the first lower DC switch 2021 is connected to the first DC generator 2022;

In the type II DC basic subunit 203, the first interface of the second lower DC switch 2031 is connected to the third DC port 201 of the corresponding DC basic unit 200, as shown in FIG8(a), the third DC port 201 is connected to the first DC port 105 of the AC basic unit through the common DC bus 300, as shown in FIG8(b), the third DC port 201 can also be directly connected to the second DC port 106 of the AC basic unit, the second interface of the second lower DC switch 2031 is connected to the first interface of the bidirectional DC/DC converter 2032, and the second interface of the bidirectional DC/DC converter 2032 is connected to the second DC generator 2033;

In the type III DC basic subunit 204, the first interface of the third lower DC switch 2041 is connected to the third DC port 201 of the corresponding DC basic unit 200, as shown in Figure 8 (b), and the third DC port 201 is connected to the first DC port 105 of the AC basic unit through the common DC bus 300, as shown in Figure 8 (a), and the third DC port 201 can also be directly connected to the second DC port 106 of the AC basic unit, and the second interface of the third lower DC switch 2041 is connected to the DC side port of the AC/DC rectifier 2042, and the AC side port of the AC/DC rectifier 2042 is connected to the AC power generation device 2043.

In some embodiments, the first DC power generation device 2022 includes but is not limited to at least one of non-persistent power generation devices based on supercapacitors or lithium batteries; the second DC power generation device 2033 includes but is not limited to non-persistent power generation devices based on supercapacitors, lead-acid batteries, photovoltaic cells, etc., or at least one of persistent power generation devices based on fuel cells, wherein the fuel cell-based power generation device includes at least one of a hydrogen fuel cell and a solid-state fuel cell, wherein the fuel cell in the fuel cell-based backup power supply persistent power generation device may include at least one of a hydrogen fuel cell and a solid-state fuel cell; the AC power generation device 2043 includes but is not limited to at least one of non-persistent power generation devices based on flywheels, etc., and persistent power generation devices based on diesel generators.

It should be noted that the first DC power generation device 2022, the second DC power generation device 2033, and the AC power generation device 2043 in the embodiment of the present invention are not limited to the specific power generation fuels mentioned above, and those skilled in the art can make their own choices based on actual conditions.

In the actual implementation process, as shown in FIG8 , the first DC power generation device 2022 in the type I DC basic subunit 202 adopts any one of a short-time power generation device based on a non-persistent supercapacitor and a long-time power generation device based on an hour-level lithium battery. As shown in FIG8 (a), the first DC power generation device 2022 can supply power to the common DC bus 300 through the first lower DC switch 2021, and then supply power to the first DC port 105 of each AC basic unit on the AC side through the common DC bus 300. As shown in FIG8 (b), the first DC power generation device 2022 can also supply power to the second DC port 106 of the AC basic unit through the first lower DC switch 2021. The first or second DC port directly transmits the electric energy to the converter subunit 103, and then the converter subunit 103 supplies power to the IT equipment.

As shown in FIG8 , the second DC power generation device 2033 in the type II DC basic subunit 203 can be a non-persistent power generation device based on a supercapacitor, a short-time power generation device based on a non-persistent lead-acid battery, a non-persistent power generation device based on a photovoltaic cell, or a backup power supply persistent power generation device based on a fuel cell. As shown in FIG8 (a), the second DC power generation device 2033 will be connected to the bidirectional DC/DC converter 2032, first convert the voltage to a stable state, and then supply power to the common DC bus 300 through the second lower DC switch 2031, and then supply power to the first DC port 105 of each AC basic unit through the common DC bus 300. As shown in FIG8 (b), the second DC power generation device 2033 can also supply power to the second DC port 106 of the AC basic unit through the second lower DC switch 2031, and the first or second DC port directly transmits the electric energy to the converter subunit 103, and then the converter subunit 103 supplies power to the IT equipment.

As shown in FIG8 , the AC power generation device 2043 in the type III DC basic subunit 204 can adopt a non-persistent power generation device based on a flywheel or a backup power supply persistent power generation device based on a diesel generator. As shown in FIG8 (b), the AC power generation device 2043 will be connected to the AC/DC rectifier 2042 to first convert the AC power into DC power, and then supply power to the common DC bus 300 through the third lower DC switch 2041, and then supply power to the first DC port 105 of each AC basic unit through the common DC bus 300. As shown in FIG8 (a), the AC power generation device 2043 can also supply power to the second DC port 106 of the AC basic unit through the third lower DC switch 2041, and the first or second DC port directly transmits the electric energy to the converter subunit 103, and then the converter subunit 103 supplies power to the IT equipment;

In addition, a diesel generator-based backup power supply and permanent power generation device can also be placed on the AC side in the traditional way to power IT equipment.

Furthermore, the type I DC basic subunit 202, the type II DC basic subunit 203, and the type III DC basic subunit 204 can be used in combination to power the IT equipment on the AC side. The following examples illustrate several typical combinations:

(1) Both the type I DC basic subunit 202 and the type II DC basic subunit 203 are selected, wherein the first DC power generation device 2022 in the type I DC basic subunit 202 is a supercapacitor or a lithium battery, and the second DC power generation device 2033 in the type II DC basic subunit 203 is a fuel cell or a photovoltaic cell. The supercapacitor or lithium battery is connected to the second DC ports 106 of the two AC basic units through the first lower DC switch 2021, and the fuel cell and the photovoltaic cell are connected to the common DC bus 300 through the second lower DC switch 2031, and connected to the first DC port 105 of the AC basic unit through the common DC bus 300. The type I DC basic subunit 202 and the type II DC basic subunit 203 together supply power to the IT equipment on the AC side.

(2) Two types of type II DC basic subunits 203 are selected at the same time, wherein the second DC power generation device 2033 of one type II DC basic subunit 203 uses a lead-acid battery, and the second DC power generation device 2033 of the other type II DC basic subunit 203 uses a fuel cell and a photovoltaic cell. The lead-acid battery is connected to the second DC ports 106 of the two AC basic units through the second lower DC switch 2031, and the fuel cell and the photovoltaic cell are connected to the common DC bus 300 through the second lower DC switch 2031, and connected to the first DC port 105 of the AC basic unit through the common DC bus 300. The two types of type II DC basic subunits 203 together power the IT equipment on the AC side.

(3) Both the type I DC basic subunit 202 and the type III DC basic subunit 204 are selected, wherein the first DC power generation device 2022 of the type I DC basic subunit 202 is a supercapacitor or a lithium battery, and the AC power generation device 2043 of the type III DC basic subunit 204 is a diesel generator. The supercapacitor or lithium battery is connected to the second DC ports 106 of the two AC basic units through the first lower DC switch 2021, and the diesel generator is connected to the common DC bus 300 through the third lower DC switch 2041, and is connected to the first DC port 105 of the AC basic unit through the common DC bus 300. The type I DC basic subunit 202 and the type III DC basic subunit 204 together supply power to the IT equipment on the AC side.

(4) Two types of type II DC basic subunits 203 are selected at the same time, wherein the second DC power generation device 2033 of one type II DC basic subunit 203 is a lead-acid battery, and the second DC power generation device 2033 of the other type II DC basic subunit 203 is a photovoltaic. The lead-acid battery is connected to the second DC ports 106 of the two AC basic units through the second lower DC switch 2031, the photovoltaic battery is connected to the common DC bus 300 through the second lower DC switch 2031, and is connected to the first DC port 105 of the AC basic unit through the common DC bus 300. The diesel engine is placed on the AC side in a traditional manner, and the two types of type II DC basic subunits 203 together supply power to the IT equipment on the AC side.

It should be noted that, as shown in FIG. 3 , the common DC bus 300 can be divided into a DC bus section I and a DC bus section II, and the DC basic unit 200 can be connected to any section of the DC bus via the DC switch of FIG. 6 (a)-(d).

In some embodiments, for an IT device with N capacity, two AC basic units with the same capacity and each containing only one low-voltage AC port 104 are selected, and each low-voltage AC port 104 is respectively connected to one power port of the dual power supply of the IT device, and at the same time, a group of DC basic units 200 with a capacity not less than N is selected, and a group of DC basic units 200 is composed of r DC basic units 200 with a capacity not less than N/r. The first DC ports 105 of the two AC basic units 100 are connected to a common DC bus 300, and a group of DC basic units 200 are respectively connected to the common DC bus 300 or to the second DC port 106 of the AC basic unit 100, forming a 2N power supply architecture basic unit, wherein N is a positive number and r is a positive integer;

As shown in FIG9 (a), when a group of DC basic units 200 selects a permanent power generation device as a backup power supply, according to the national standard A-level requirements of the data center, the distribution subunits 102 in the two AC basic units 100 are configured to have a capacity of not less than N/2, and the converter subunits 103 in the two AC basic units 100 are configured to have a capacity of not less than N/2. According to the Uptime Tier IV level requirements, the distribution subunits 102 in the two AC basic units 100 are configured to have a capacity of not less than N/2, and the converter subunits 103 in the two AC basic units 100 are configured to have a capacity of not less than N.

As shown in FIG9 (b), when a group of DC basic units 200 does not select a permanent power generation device as a backup power supply, the diesel generator backup power supply is on the medium voltage AC side. According to the national standard A-level requirements of the data center, the distribution subunit 102 in the two AC basic units 100 should be configured with a capacity of not less than N, and the converter subunit 103 in the two AC basic units 100 should be configured with a capacity of not less than N/2. According to the Uptime Tier IV level requirements, the distribution subunit 102 in the two AC basic units 100 should be configured with a capacity of not less than N, and the converter subunit 103 in the two AC basic units 100 should be configured with a capacity of not less than N.

It should be noted that when a long-lasting power generation device is selected, it can be selected from the first DC power generation device 2022, the second DC power generation device 2033, and the AC power generation device 2043 mentioned above, or it can be selected by itself. No specific limitation is made here, and those skilled in the art can select it according to actual conditions. Similarly, when a long-lasting power generation device is not selected, it can be selected from the first DC power generation device 2022, the second DC power generation device 2033, and the AC power generation device 2043 mentioned above, or it can be selected by itself. No specific limitation is made here, and those skilled in the art can select it according to actual conditions.

In the actual implementation process, as shown in Figure 9 (a) and (b), according to the Uptime Tier IV level requirement, single point failure does not include power failure. When the capacity of an AC basic unit 100 is equal to the capacity of a group of IT equipment, the capacity is N. Two AC basic units 100 with the same capacity are selected to supply power to one of the dual power supplies of a group of IT equipment, so that each group of IT equipment meets the 2N capacity power supply demand. At the same time, a group of DC basic units 200 is configured N+x (x=1,2,...N-1) according to the total capacity N demand of the IT equipment. For example, if x=2 and the capacity of each DC basic unit 200 is N/3, then a A group of DC basic units 200 is configured with 2+N/(N/3), that is, 5 DC basic units 200. The two configured AC basic units 100 and the group of configured DC basic units 200 are respectively connected to the common DC bus 300 to form a 2N capacity power supply architecture basic unit. Multiple 2N capacity power supply architecture basic units can share the common DC bus 300. According to the national standard A-level requirements of the data center, a single point failure includes a loss of AC power. The capacity of an AC basic unit can be configured according to N/2 capacity, so the capacity is N/2.

In some embodiments, for m+1 IT devices with N capacities, m+1 AC basic units 100 with the same capacity are selected, each AC basic unit 100 contains two low-voltage AC ports 104, and the 2(m+1) low-voltage AC ports 104 are connected in a hand-in-hand manner and are respectively connected to one power port of the dual power supplies of the m+1 IT devices. At the same time, a group of DC basic units 200 with a capacity not less than (m+1)•N is selected, and a group of DC basic units 200 is composed of r DC basic units 200 with a capacity not less than [(m+1)/r]N. The m+1 AC basic units 100 are connected to a common DC bus 300, and a group of DC basic units 200 are respectively connected to the common DC bus 300 or to the second DC port 106 of the AC basic unit 100, forming a (m+1)/m DR power supply architecture basic unit, wherein N is a positive number, r is a positive integer, and m is a positive integer greater than or equal to 2;

As shown in FIG10 (a), when a group of DC basic units 200 selects a permanent power generation device as a backup power supply, according to the national standard A-level requirements of data centers, the distribution subunits 102 in at least m+1 AC basic units 100 are configured to be not less than N capacity, and the converter subunits 103 in at least m+1 AC basic units 100 are configured to be not less than N capacity. According to the Uptime Tier IV level requirements, the distribution subunits 102 in at least m+1 AC basic units 100 are configured to be not less than N capacity, and the converter subunits 103 in at least m+1 AC basic units 100 are configured to be not less than [(m+1)/m]•N capacity.

As shown in Figure 10 (b), when a group of DC basic units 200 does not use a long-term power generation device as a backup power supply, the diesel generator backup power supply is on the medium voltage AC side. According to the national standard A-level requirements of the data center, the distribution subunits 102 in at least m+1 AC basic units 100 should be configured with a capacity of no less than [(m+1)/m]•N, and the converter subunits 103 in at least m+1 AC basic units 100 should be configured with a capacity of no less than N. According to the Uptime Tier IV level requirements, the distribution subunits 102 in at least m+1 AC basic units 100 should be configured with a capacity of no less than [(m+1)/m]•N, and the converter subunits 102 in at least m+1 AC basic units 100 should be configured with a capacity of no less than [(m+1)/m]•N.

It can be understood that, as shown in Figures 10 (a) and (b), the hand-in-hand form in the DR power supply architecture can be specifically as follows: assuming that three AC basic units 100 are used in the DR power supply architecture, two outgoing switches 1024 are used in each AC basic unit and correspond to two low-voltage AC ports 104. An outgoing switch 1024 in the first AC basic unit corresponds to a low-voltage AC port 104 and an outgoing switch 1024 in the second AC basic unit corresponds to a low-voltage AC port 104 to supply power to the first IT device 400. Another outgoing switch 1024 in the second AC basic unit corresponds to a low-voltage AC port 104 and an outgoing switch 1024 in the third AC basic unit corresponds to a low-voltage AC port 104 to supply power to the second IT device 500. Another outgoing switch 1024 in the third AC basic unit corresponds to a low-voltage AC port 104 and another outgoing switch 1024 in the first AC basic unit corresponds to a low-voltage AC port 104 to supply power to the third IT device 600. If four AC basic units, five AC basic units or dozens of AC basic units are used in the DR power supply architecture, the above connection method can be used in the same way.

In the actual implementation process, as shown in Figure 10 (a) and (b), according to Uptime TierIV The level requires that single-point failure does not include power failure. When the capacity of an AC basic unit is equal to (m+1)/m times the capacity of a group of IT equipment, m is a positive integer greater than 1, then the capacity is ((m+1)/m)•N. At least m+1 identical AC basic units are selected, each AC basic unit includes two low-voltage AC ports 104, and the 2 (m+1) low-voltage AC ports 104 are used to supply power to one of the dual power supplies of at least m+1 groups of IT equipment in a hand-in-hand manner. A group of DC basic units 200 is configured N+x (x=1,2,...N-1) according to the total capacity N requirement of the IT equipment. The configured multiple AC basic units and the configured group of DC basic units 200 are respectively connected to the common DC bus 300 to form a DR power supply architecture basic unit with a capacity of ((m+1)/m)•N. According to the national standard A-level requirements of the data center, single-point failure includes power failure. The capacity of an AC basic unit is configured according to the N capacity, then the capacity is N.

Taking m=2 as an example, when the capacity of an AC basic unit is equal to 3/2 of the capacity of the IT equipment, it is a (3/2)•N capacity. At least 3 identical AC basic units are selected. Each AC basic unit includes 2 low-voltage AC ports 104. The 6 low-voltage AC ports 104 are respectively powered by one of the dual power supplies of at least 3 IT devices in a hand-in-hand manner. A group of DC basic units 200 is configured N+x according to the total capacity N requirement of the IT equipment. If x=2, and the capacity of each DC basic unit 200 is N/3, a group of DC basic units 200 is configured with 2+N/(N/3), that is, 5 DC basic units 200. The configured multiple AC basic units and the configured group of DC basic units 200 are respectively connected to the common DC bus 300 to form a DR power supply architecture basic unit with a (3/2)•N capacity.

Taking m=3 as an example, when the capacity of an AC basic unit is equal to 4/3 of the capacity of the IT equipment, it is a (4/3)•N capacity. At least 4 identical AC basic units are selected. Each AC basic unit includes 2 low-voltage AC ports 104. The 8 low-voltage AC ports 104 are connected in a hand-in-hand manner (a specific description of the hand-in-hand connection method is given here) to supply power to one of the dual power supplies of at least 4 IT devices. A group of DC basic units 200 is configured as N+x according to the total capacity N requirement of the IT equipment. If x=2, and the capacity of each DC basic unit 200 is N/4, a group of DC basic units 200 is configured as 2+N/(N/4), that is, 6 DC basic units 200. The configured multiple AC basic units and the configured group of DC basic units 200 are respectively connected to the common DC bus 300 to form a DR power supply architecture basic unit with a capacity of (4/3)•N. At this time, the DR architecture power supply and distribution system consists of 4 AC basic units.

Taking m=4 as an example, when the capacity of an AC basic unit is equal to 5/4 of the capacity of the IT equipment, it is a (5/4)•N capacity. At least 5 identical AC basic units are selected. Each AC basic unit includes 2 low-voltage AC ports 104. Ten low-voltage AC ports 104 respectively supply power to one of the dual power supplies of at least 5 IT devices in a hand-in-hand manner. A group of DC basic units 200 is configured N+x according to the total capacity N requirement of the IT equipment. If x=2, and the capacity of each DC basic unit 200 is N/5, a group of DC basic units 200 is configured with 2+N/(N/5), that is, 7 DC basic units 200. The configured multiple AC basic units and the configured group of DC basic units 200 are respectively connected to the common DC bus 300 to form a DR power supply architecture basic unit with a capacity of (5/4)•N. At this time, the DR architecture power supply and distribution system consists of 5 AC basic units.

Therefore, the data center flexible resource pooling energy router 10 proposed in the embodiment of the present invention can solve the problems of low capacity utilization, large power loss, complex structure and difficulty in intensive management of the existing 2N and DR architecture power supply and distribution systems, large number of batteries required, large floor space, high cost and large maintenance workload.

It should be noted that the data center flexible resource pooling energy router 10 can not only build a 2N power supply architecture and a DR power supply architecture, but also build an architecture with both 2N power supply and DR power supply. In this architecture, at least one 2N capacity power supply architecture basic unit and at least one ((m+1)/m)•N DR power supply architecture basic unit can share a common DC bus 300.

In summary, the data center flexible resource pooling energy router proposed in the embodiment of the present invention has the following beneficial effects:

(1) Applying flexible DC power distribution technology to achieve battery pool management can halve the battery capacity compared to the traditional data center power supply and distribution architecture, thereby increasing the capacity utilization of distribution equipment. This not only reduces battery costs, but also reduces operating costs by halving the area occupied by batteries.

(2) The application of flexible power distribution and resource pooling technology realizes the energy connection between IT equipment and power loads. When the backup power supply is on the DC side, the capacity utilization rate of the power distribution equipment can be improved. For a typical 3/2N DR power supply system, the capacity utilization rate of the power supply and distribution electrical components including the transformer can be increased from 67% to 100%; for a 2N power supply system, the capacity utilization rate of the power supply and distribution electrical components including the transformer can be increased from 50% to 100%;

(3) The application of a direct mains supply solution based on high-speed switches can reduce power loss and increase the efficiency of online uninterruptible power supply from 95% to 99%;

(4) Compared with the traditional 2N architecture, the 2N power supply and distribution system based on the energy router can remove the bus tie switch and still achieve diagonal double fault protection, which not only reduces the cost of power supply and distribution equipment, but also increases power supply reliability;

(5) Greatly reduce the cost and intensive management of the data center's power supply and distribution system, and make it maintenance-free, thereby improving efficiency and effectively promoting carbon emission reduction in data centers.

In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or N embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "N" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

Claims (8)

1. A data center flexible resource pooling energy router, comprising: a plurality of alternating current basic units, a plurality of direct current basic units and a common direct current bus, wherein,

Each alternating current basic unit comprises a high-voltage alternating current port, a power distribution subunit, a converter subunit, one or two low-voltage alternating current ports, a first direct current port and a second direct current port, and each direct current basic unit comprises at least one third direct current port;

Each power distribution subunit comprises a first port, a second port and a third or fourth port, and each converter subunit comprises an alternating current side port, a fourth direct current port and a fifth direct current port;

The high-voltage alternating current port of each alternating current basic unit is at least connected with a section of high-voltage alternating current bus through an alternating current switch or a change-over switch, the first port of the power distribution subunit is connected with the high-voltage alternating current port, the second port of the power distribution subunit is connected with the alternating current side port of the converter subunit, the third port or the fourth port of the power distribution subunit is connected with one or two low-voltage alternating current ports of each alternating current basic unit, the fourth direct current port of the converter subunit is connected with the first direct current port of each alternating current basic unit, the fifth direct current port of the converter subunit is connected with the second direct current port of each alternating current basic unit, and one or two low-voltage alternating current ports of each alternating current basic unit are connected with one power supply port of at least one IT device;

The positive electrode and the negative electrode of the first direct current port of each alternating current basic unit are connected into the positive electrode and the negative electrode of the public direct current bus;

The positive electrode and the negative electrode of the third direct current port of each direct current basic unit are respectively connected with the positive electrode and the negative electrode of the public direct current bus, or the positive electrode and the negative electrode of the third direct current port of each direct current basic unit are respectively connected with the positive electrode and the negative electrode of the second direct current port of each alternating current basic unit.

2. The flexible resource pooling energy router of claim 1 wherein the power distribution subunit further comprises at least one transformer, an incoming line switch, a high speed switch, and at least one outgoing line switch, the converter subunit comprising at least one bi-directional AC/DC converter and an outgoing line switch, wherein,

The high-voltage side of each transformer is connected with a first port of the power distribution subunit, the low-voltage side of each transformer is connected with a first interface of the incoming line switch, a second interface of the incoming line switch is connected with a first interface of the high-speed switch, a second interface of the high-speed switch is connected with a second port of the power distribution subunit, the second port of the power distribution subunit is connected with one end of the at least one outgoing line switch, and the other end of the at least one outgoing line switch is connected with a third port or a fourth port of the power distribution subunit;

The alternating current side port of each bidirectional AC/DC converter is connected with the alternating current side port of the converter subunit, the direct current side port of each bidirectional AC/DC converter is connected with the first interface of the upper-port direct current switch, the first interface of the upper-port direct current switch is connected with the fifth direct current port of each alternating current basic unit, and the second interface of the upper-port direct current switch is connected with the fourth direct current port of the converter subunit.

3. The flexible resource pooling energy router of claim 1 wherein each of the dc base units further comprises any one of three types of dc base subunits, type I dc base subunit, type II dc base subunit, and type III dc base subunit, wherein,

The I-type direct current basic subunit comprises a first lower-opening direct current switch and a first direct current power generation device, wherein a first interface of the first lower-opening direct current switch is connected with a third direct current port of the corresponding direct current basic unit, and a second interface of the first lower-opening direct current switch is connected with the first direct current power generation device;

The II-type direct current basic subunit comprises a second lower-port direct current switch, at least one bidirectional DC/DC converter and a second direct current power generation device, wherein a first interface of the second lower-port direct current switch is connected with a third direct current port of the corresponding direct current basic unit, a second interface of the second lower-port direct current switch is connected with a first interface of the bidirectional DC/DC converter, and a second interface of the bidirectional DC/DC converter is connected with the second direct current power generation device;

The III-type direct current basic subunit comprises a third lower-port direct current switch, at least one AC/DC rectifier and an AC power generation device, wherein a first interface of the third lower-port direct current switch is connected with a third direct current port of the direct current basic unit, a second interface of the third lower-port direct current switch is connected with a direct current side port of the AC/DC rectifier, and an alternating current side port of the AC/DC rectifier is connected with the AC power generation device.

4. The data center flexible resource pooling energy router of claim 3 wherein the first direct current power generation device includes, but is not limited to, at least one of a super capacitor or lithium battery based non-persistent power generation device.

5. The data center flexible resource pooling energy router of claim 3, wherein the second direct current power generation device includes, but is not limited to, at least one of a stage super capacitor, a lead acid battery, a photovoltaic cell based non-permanent power generation device, or a fuel cell based permanent power generation device, wherein the fuel cell based comprises at least one of a hydrogen fuel cell and a solid state fuel cell.

6. A data center flexible resource pooling energy router according to claim 3 characterized in that the ac power generation means includes but is not limited to at least one of flywheel based non-permanent power generation means, diesel generator based permanent power generation means.

7. The flexible resource pooling energy router of data center of claim 1 wherein,

For an N-capacity IT device, selecting two alternating current basic units which have the same capacity and only comprise one low-voltage alternating current port, wherein each low-voltage alternating current port is respectively connected with one power port in a dual power supply of the IT device, a group of direct current basic units with the capacity not smaller than N is simultaneously selected, each group of direct current basic units consists of r direct current basic units with the capacity not smaller than N/r, a first direct current port of each two alternating current basic units is connected with a public direct current bus, and each group of direct current basic units is respectively connected with the public direct current bus or a second direct current port of each alternating current basic unit to form a 2N power supply framework basic unit, wherein N is a positive number and r is a positive integer;

When the group of direct current basic units select the permanent power generation device as a standby power supply: according to the national standard A-level requirement of the data center, the power distribution subunit in the two alternating current basic units is configured to be not less than N/2 capacity, and the converter subunit in the two alternating current basic units is configured to be not less than N/2 capacity; according to Uptime TierIV grade requirements, the power distribution subunits in the two alternating current basic units are configured to be not less than N/2 capacity, and the converter subunits in the two alternating current basic units are configured to be not less than N capacity;

When the group of direct current basic units do not select the permanent power generation device as a standby power supply: according to the national standard A-level requirement of the data center, the power distribution subunit in the two alternating current basic units is configured to be not smaller than N capacity, and the converter subunit in the two alternating current basic units is configured to be not smaller than N/2 capacity; according to the Uptime TierIV-level requirement, the power distribution subunit in the two ac base units is configured to be no less than N capacity, and the current transformer subunit in the two ac base units is configured to be no less than N capacity.

8. The flexible resource pooling energy router of data center of claim 1 wherein,

For m+1 pieces of N-capacity IT equipment, selecting m+1 pieces of alternating current basic units with the same capacity, wherein each alternating current basic unit comprises two low-voltage alternating current ports, 2 (m+1) pieces of low-voltage alternating current ports are connected in a hand-in-hand manner, and are respectively connected with one power port of double power supplies of the m+1 pieces of IT equipment, meanwhile, a group of direct current basic units with the capacity not smaller than (m+1) N is selected, each group of direct current basic units consists of r direct current basic units with the capacity not smaller than [ (m+1)/r ]. N, a first direct current port of each m+1 piece of alternating current basic unit is connected with a common direct current bus, and a third direct current port of each group of direct current basic units is respectively connected with the common direct current bus or a second direct current port of each alternating current basic unit to form a DR power supply framework basic unit with the capacity not smaller than (m+1)/m, wherein N is a positive integer, r is a positive integer greater than or equal to 2;

When the group of direct current basic units select the permanent power generation device as a standby power supply: according to the national standard A-level requirement of the data center, the configuration of the power distribution subunit in the at least m+1 alternating current basic units is not less than N capacity, and the configuration of the converter subunit in the at least m+1 alternating current basic units is not less than N capacity; according to Uptime TierIV-level requirements, the configuration of power distribution subunits in at least m+1 alternating current basic units is not less than N capacity, and the configuration of converter subunits in at least m+1 alternating current basic units is not less than [ (m+1)/m ]. N capacity;

When the group of direct current basic units do not select the permanent power generation device as a standby power supply: according to the national standard A-level requirement of the data center, the configuration of power distribution subunits in at least m+1 alternating current basic units is not less than [ (m+1)/m ]. N capacity, and the configuration of converter subunits in at least m+1 alternating current basic units is not less than N capacity; according to Uptime TierIV grades, the distribution subunits in the at least m+1 alternating current basic units are configured to be not less than [ (m+1)/m ]. N capacity, and the converter subunits in the at least m+1 alternating current basic units are all not less than [ (m+1)/m ]. N capacity.