CN220797876U - Power supply and distribution system of data center - Google Patents

Abstract

The utility model discloses a data center power supply and distribution system, which comprises: the system comprises a first mains supply, a second mains supply, an emergency power supply, a first medium voltage alternating current interconnection switch, a first medium voltage alternating current bus I section, a second medium voltage alternating current interconnection switch, a first medium voltage alternating current bus II section, at least one third medium voltage alternating current interconnection switch, a first medium voltage alternating current bus III section, a fourth medium voltage alternating current interconnection switch, a first medium voltage bus voltage transformer cabinet, a second medium voltage bus voltage transformer cabinet, a third medium voltage bus voltage transformer cabinet, a fifth medium voltage alternating current interconnection switch, a sixth medium voltage alternating current interconnection switch, a seventh medium voltage alternating current interconnection switch and an eighth medium voltage alternating current interconnection switch. The utility model reduces about 50% redundant links of the full power supply link of the data center, and has the advantages of higher efficiency, high reliability, high power density, convenient maintenance, short construction period, low operation and maintenance cost and the like.

Description

Power supply and distribution system of data center

Technical Field

The utility model relates to the technical field of new energy power supply and distribution, in particular to a power supply and distribution system of a data center.

Background

Under the current carbon-peak and carbon-neutral background, new requirements are also put forward for the data center industry, the construction speed of the ultra-large data center, namely a large communication machine room, in China is gradually increased, and the number of deployed racks is greatly increased, so that the carbon-peak and carbon-neutral incorporation of the ecological civilization construction overall layout becomes the problem to be solved urgently at present.

In the related art, the data center is safe and reliable, and continuously runs without a high-reliability power supply system, and two common uninterruptible power supply technologies of the domestic data center currently comprise an AC UPS (AC uninterrupted power supply, alternating current uninterruptible power supply), an HVDC (High Voltage Direct Current, high-voltage direct current transmission) (240V/336V/48V), a direct supply +BBU (Building Baseband Unit, building base station bandwidth unit) and the like. And, according to its construction level requirement, adopt different redundant power supply modes, such as 2N mode, DR mode, RR mode etc.. These power supply technologies still present many challenges in early design, project construction, and post-maintenance. The AC UPS power supply technology has complex structure, low efficiency and certain potential safety hazard in configuration of a chemical battery; the HVDC (240V/336V/48V) power supply technology is widely popularized and adopted in China, and is a new product and a new power supply system mode, and the stable reliability of long-term operation of the HVDC (240V/336V/48V) power supply technology is further required to be further verified in practice; the direct supply of the commercial power and the BBU have more fault points, are difficult to maintain, have high cost and are not generally adopted by large and medium-sized data centers.

However, the traditional data center and communication machine room distribution and power system construction modes have the pain points of low efficiency, large loss, large occupied area, complex construction operation and maintenance, high cost and the like, and the power supply technology needs to be innovated, so that the development is required to be carried out in the direction of being more reliable, cheaper, more efficient and easier to deploy. Meanwhile, investment construction of large-scale and ultra-large-scale data centers and large-scale communication machine rooms faces restrictions on machine room utilization rate and return on investment, and a power supply system with high efficiency, small occupied area and low maintenance difficulty is urgently needed. Therefore, the above technology is not suitable for the development trend of new data centers.

Disclosure of Invention

The utility model aims to solve the technical problems of large occupied space, long construction period, complex maintenance and management, low efficiency, high cost and the like of a power supply and distribution architecture of a data center in the prior art.

Therefore, one purpose of the utility model is to provide a data center power supply and distribution system, which simplifies the whole life cycle work of data center design, purchase, construction, operation and maintenance, reduces about 50% redundant links of the whole power supply link of the data center, and has the advantages of higher efficiency, high reliability, high power density, convenient maintenance, short construction period, low operation and maintenance cost, and the like.

To solve the above problems, an embodiment of a first aspect of the present utility model provides a data center power supply and distribution system, including: the system comprises a first mains supply, a second mains supply, an emergency power supply, a first medium voltage alternating current interconnection switch, a first medium voltage alternating current bus I section, a second medium voltage alternating current interconnection switch, a first medium voltage alternating current bus II section, at least one third medium voltage alternating current interconnection switch, a first medium voltage alternating current bus III section, a fourth medium voltage alternating current interconnection switch, a first medium voltage bus voltage transformer cabinet, a second medium voltage bus voltage transformer cabinet, a third medium voltage bus voltage transformer cabinet, a fifth medium voltage alternating current interconnection switch, a sixth medium voltage alternating current interconnection switch, a seventh medium voltage alternating current interconnection switch and an eighth medium voltage alternating current interconnection switch; wherein the first and second mains supplies are arranged independently of each other, and the first and second mains supplies are used for jointly providing working power for electronic information equipment of the data center; the first commercial power supply is connected to the first medium-voltage alternating current bus section I through the first medium-voltage alternating current interconnection switch, and the second commercial power supply is connected to the first medium-voltage alternating current bus section II through the second medium-voltage alternating current interconnection switch; the emergency power supply comprises at least one generator set, at least one generator set is connected into the first medium-voltage alternating current bus III section in a one-to-one correspondence manner through at least one third medium-voltage alternating current interconnection switch, and the first medium-voltage alternating current bus III section is connected with a test load through a fourth medium-voltage alternating current interconnection switch; the first medium-voltage alternating current bus I section is connected with the first medium-voltage bus voltage transformer cabinet, the first medium-voltage alternating current bus II section is connected with the second medium-voltage bus voltage transformer cabinet, and the first medium-voltage alternating current bus III section is connected with the third medium-voltage bus voltage transformer cabinet; the first medium-voltage alternating current bus III section is connected to the first medium-voltage alternating current bus I section through the fifth medium-voltage alternating current interconnection switch and the seventh medium-voltage alternating current interconnection switch in sequence, and the first medium-voltage alternating current bus III section is connected to the first medium-voltage alternating current bus II section through the sixth medium-voltage alternating current interconnection switch and the eighth medium-voltage alternating current interconnection switch in sequence; when the first commercial power supply and the second commercial power supply are in power failure, at least one generator set provides emergency power for the first medium-voltage alternating current bus section I through a third medium-voltage alternating current interconnection switch, a fifth medium-voltage alternating current interconnection switch and a seventh medium-voltage alternating current interconnection switch which are correspondingly connected with the generator set in sequence; when the first commercial power supply and the second commercial power supply are in power failure, at least one generator set provides emergency power for the first medium-voltage alternating current bus section II through a third medium-voltage alternating current interconnection switch, a sixth medium-voltage alternating current interconnection switch and an eighth medium-voltage alternating current interconnection switch which are correspondingly connected.

According to the data center power supply and distribution system provided by the embodiment of the utility model, based on a double-circuit commercial power supply and one-circuit emergency power supply, the technologies of a phase-shifting transformer, a rectifier, direct current distribution, flywheel energy storage and the like are combined, the system is simplified on the basis of guaranteeing high-reliability direct current power supply, the whole life cycle work of the data center design, purchase, construction, operation and maintenance and the like is simplified, about 50% redundant links of the whole link of the data center power supply are reduced, and the data center power supply system has the advantages of higher efficiency, high reliability, high power density, convenience in maintenance, short construction period, low operation and maintenance cost and the like.

In addition, the data center power supply and distribution system according to the above embodiment of the present utility model may further have the following additional technical features:

further, the data center power supply and distribution system further includes: the ninth medium voltage alternating current interconnection switch is connected with the lifting bus of the first medium voltage alternating current bus II section through the ninth medium voltage alternating current interconnection switch; and a three-in-two interlock is arranged among the first medium voltage alternating current interconnection switch, the second medium voltage alternating current interconnection switch and the ninth medium voltage alternating current interconnection switch.

Further, the data center power supply and distribution system further includes: a tenth medium voltage ac interconnection switch, an eleventh medium voltage ac interconnection switch, a first phase-shifting transformer cabinet and a second phase-shifting transformer cabinet; the first medium-voltage alternating current bus I section is connected to the first phase-shifting transformer cabinet through the tenth medium-voltage alternating current interconnection switch, and the first medium-voltage alternating current bus II section is connected to the second phase-shifting transformer cabinet through the eleventh medium-voltage alternating current interconnection switch; the first phase-shifting transformer cabinet and the second phase-shifting transformer cabinet each comprise a plurality of fans.

Further, the data center power supply and distribution system further includes: a twelfth medium voltage ac tie switch, a thirteenth medium voltage ac tie switch, a first feeder loop and a second feeder loop; the first medium-voltage alternating current bus section I is connected with the first feeder line loop through the twelfth medium-voltage alternating current interconnection switch so as to provide power for non-electronic information equipment of the data center through the first feeder line loop; the first medium-voltage alternating current bus section II is connected with the second feeder line loop through the thirteenth medium-voltage alternating current interconnection switch so as to provide power for non-electronic information equipment of the data center through the second feeder line loop.

Further, the data center power supply and distribution system further includes: a first rectifying unit and a second rectifying unit; the first phase-shifting transformer cabinet is connected with the first rectifying unit, the second phase-shifting transformer cabinet is connected with the second rectifying unit, and the first rectifying unit and the second rectifying unit are used for converting alternating current into direct current; the first rectifying unit and the second rectifying unit respectively comprise a plurality of rectifying cabinets.

Further, the data center power supply and distribution system further includes: the system comprises a first direct current bus, a first direct current output cabinet direct current bus, a second direct current output cabinet direct current bus, a first direct current switch, a second direct current switch and a plurality of direct current output cabinets; the first rectifying unit is connected with the first direct current bus, and the first direct current bus is connected to the first direct current output cabinet direct current bus through the first direct current switch; the second rectifying unit is connected with the second direct current bus, and the second direct current bus is connected to the second direct current output cabinet direct current bus through the second direct current switch; the first direct current output cabinet direct current bus and the second direct current output cabinet direct current bus are respectively connected with the plurality of direct current output cabinets.

Further, the data center power supply and distribution system further includes: the flywheel energy storage unit is connected with the first direct current bus and the second direct current bus respectively and is used for being started before the emergency power supply is started to load when the first mains supply and the second mains supply are in power failure so as to provide emergency power for electronic information equipment of the data center.

Further, the flywheel energy storage unit includes: the first flywheel energy storage device is connected with the first direct current bus; and the second flywheel energy storage device is connected with the second direct current bus.

Further, the data center power supply and distribution system further includes: the system comprises a plurality of row-head cabinets, wherein one ends of the row-head cabinets are connected with the plurality of direct-current output cabinets in a one-to-one correspondence manner, and the other ends of the row-head cabinets are connected with electronic information equipment of a data center.

Further, the generator set is a generator set generating electricity by adopting fuel gas or fuel oil.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic diagram of the overall architecture of a data center power supply and distribution system according to one embodiment of the present utility model;

FIG. 2 is a schematic diagram of a data center power supply and distribution system according to one embodiment of the utility model;

FIG. 3 is a schematic diagram of a data center power supply and distribution system according to yet another embodiment of the present utility model;

FIG. 4 is a schematic diagram of a data center power supply and distribution system according to yet another embodiment of the present utility model;

fig. 5 is a schematic structural diagram of a data center power supply and distribution system according to another embodiment of the present utility model.

Reference numerals illustrate:

a T-data center power supply and distribution system;

10-a first mains supply; 20-a second mains supply;

30-an emergency power supply; 31-a generator set A; 32-a generator set B;

40-a first medium voltage ac tie switch; 50-a first medium-voltage alternating current bus I section; 60-a second medium voltage ac tie switch; 70-a first medium-voltage alternating current bus II section;

80-a third medium voltage ac tie switch; 81-a third medium voltage ac tie switch a; 82-a third medium voltage ac tie switch B;

90-a first medium voltage ac busbar section III; 100-fourth medium voltage ac tie switches; 110-a first medium voltage bus voltage transformer cabinet; 120-a second medium voltage bus voltage transformer cabinet; 130-a third medium voltage bus voltage transformer cabinet;

140-a fifth medium voltage ac tie switch; 150-sixth medium voltage ac tie switch; 160-seventh medium voltage ac tie switch; 170-eighth medium voltage ac tie switch; 180-ninth medium voltage ac tie switch; 190-lifting the bus; 200-tenth medium voltage ac tie switch; 210-eleventh medium voltage ac tie switch; 220-a first phase-shifting transformer cabinet; 230-a second phase-shifting transformer cabinet; 240-twelfth medium voltage ac tie switch; 250-thirteenth medium voltage ac tie switch; 260-a first feeder loop; 270-a second feeder loop;

280-a first rectifying unit; 281-rectifier cabinet a; 282-rectifier cabinet B;

290-a second rectifying unit; 291-rectifier cabinet C; 292-rectifying cabinet D;

300-a first direct current bus; 310-a first direct current output cabinet direct current bus; 320-a second direct current bus; 330-a second dc output cabinet dc bus; 340-a first dc switch; 350-a second dc switch;

360-a plurality of direct current output cabinets; 361-a direct current output cabinet A; 362-dc output cabinet B; 363-dc output cabinet C; 364-direct current output cabinet D; 365-a direct current output cabinet E; 366-direct current output cabinet F;

370-flywheel energy storage unit; 371-a first flywheel energy storage device; 372-a second flywheel energy storage device;

380-a plurality of column header cabinets; 381-column header cabinet a; 382-column header cabinet B; 383-a column header cabinet C; 384-row header cabinet D; 385-column header cabinet E; 386-column header cabinet F;

390-test load.

Detailed Description

Embodiments of the present utility model will be described in detail below, by way of example with reference to the accompanying drawings.

A data center power supply and distribution system according to an embodiment of the present utility model is described below with reference to fig. 1-5.

Fig. 1 is a schematic diagram of a novel data center power supply and distribution system according to one embodiment of the present utility model. As shown in fig. 1, the data center power supply and distribution system T includes: the first mains supply 10, the second mains supply 20, the emergency supply 30, the first medium voltage ac interconnection switch 40, the first medium voltage ac busbar I section 50, the second medium voltage ac interconnection switch 60, the first medium voltage ac busbar II section 70, at least one third medium voltage ac interconnection switch 80, the first medium voltage ac busbar III section 90, the fourth medium voltage ac interconnection switch 100, the first medium voltage busbar voltage transformer cabinet 110, the second medium voltage busbar voltage transformer cabinet 120, the third medium voltage busbar voltage transformer cabinet 130, the fifth medium voltage ac interconnection switch 140, the sixth medium voltage ac interconnection switch 150, the seventh medium voltage ac interconnection switch 160, the eighth medium voltage ac interconnection switch 170.

Wherein the first mains supply 10 and the second mains supply 20 are arranged independently of each other, the first mains supply 10 and the second mains supply 20 being adapted to jointly provide the working power for the electronic information equipment of the data center.

Specifically, as shown in fig. 1, the data center power supply and distribution system T mainly includes two power supplies, one is a first commercial power supply 10, the other is a second commercial power supply 20, the first commercial power supply 10 and the second commercial power supply 20 are configured as 10KV commercial power supplies, and the first commercial power supply 10 and the second commercial power supply 20 are independent from each other and are used for providing various power supplies for electronic information equipment of a data center.

The electronic equipment information refers to equipment for carrying out processing such as acquisition, processing, operation, storage, transportation and retrieval on the electronic information, and for example, the electronic equipment comprises a server, an exchanger, storage equipment and the like, belongs to important loads in primary loads, does not allow power failure, and adopts a power supply mode of combining an uninterruptible power supply system with two paths of independent power supplies so as to ensure normal operation of the electronic information equipment.

The first mains supply 10 is connected to the first medium voltage ac busbar I section 50 via a first medium voltage ac interconnection switch 40 and the second mains supply 20 is connected to the first medium voltage ac busbar II section 70 via a second medium voltage ac interconnection switch 60.

Specifically, the first commercial power supply 10 is used as an independent power supply, and is converted and distributed by the first medium voltage ac interconnection switch 40 to provide a stable and reliable power supply for the first medium voltage ac bus I section 50; the second mains supply 20 is also an independent power supply, which is converted and distributed by the second medium voltage ac tie switch 60 to supply power to the first medium voltage ac busbar II section 70.

The design of the two-way mains supply connected to different medium-voltage alternating current buses not only provides diversity of power supply, but also enhances redundancy of a power supply system. Under normal conditions, the two mains supplies can jointly provide a stable operating power supply for the electronic information devices of the data center. Once one of the mains supplies fails or breaks down, the other mains supply can take over quickly, ensuring continuous operation of the data centre. Furthermore, the presence of the first medium voltage ac interconnection switch 40 and the second medium voltage ac interconnection switch 60 allows the system to be flexibly adjusted according to the actual situation. For example, in certain cases, the power supply path may be switched or isolation and restoration of power may be achieved by operating these tie switches. This flexibility enables the power supply and distribution system of the data center to accommodate different operating scenarios and requirements.

The emergency power supply 30 comprises at least one generator set, the at least one generator set is connected to the first medium voltage ac bus III section 90 in a one-to-one correspondence through at least one third medium voltage ac interconnection switch 80, and the first medium voltage ac bus III section 90 is connected to the test load 390 through a fourth medium voltage ac interconnection switch 100.

Specifically, as shown in fig. 1, the system includes at least one third medium voltage ac interconnection switch 80, for example, includes a third medium voltage ac interconnection switch a81 and a third medium voltage ac interconnection switch B82, the emergency power supply 30 includes at least one generator set, for example, including a generator set a31 and a generator set B32, at least one generator set is connected to the first medium voltage ac bus III segment 90 in a one-to-one correspondence manner through the at least one third medium voltage ac interconnection switch 80, that is, the generator set a31 is connected to the first medium voltage ac bus III segment 90 through the third medium voltage ac interconnection switch a81, the generator set B32 is connected to the first medium voltage ac bus III segment 90 through the third medium voltage ac interconnection switch B82, and the first medium voltage ac bus III segment 90 is connected to the test load 390 through the fourth medium voltage ac interconnection switch 100, for periodically testing the performance of the generator set a31 and the generator set B32.

The first medium voltage ac bus section I50 is connected to a first medium voltage bus voltage transformer cabinet 110, the first medium voltage ac bus section II 70 is connected to a second medium voltage bus voltage transformer cabinet 120, and the first medium voltage ac bus section III 90 is connected to a third medium voltage bus voltage transformer cabinet 130.

Specifically, the first medium voltage bus voltage transformer cabinet 110, the second medium voltage bus voltage transformer cabinet 120 and the third medium voltage bus voltage transformer cabinet 130 mainly comprise a voltage transformer and a lightning arrester, and are used for measuring voltages of the first medium voltage ac bus I section 50, the second medium voltage ac bus II section 70 and the third medium voltage ac bus III section 90, and assisting synchronization grid connection.

The first medium voltage ac bus III segment 90 is connected to the first medium voltage ac bus I segment 50 sequentially through the fifth medium voltage ac tie switch 140 and the seventh medium voltage ac tie switch 160, and the first medium voltage ac bus III segment 90 is connected to the first medium voltage ac bus II segment 70 sequentially through the sixth medium voltage ac tie switch 150 and the eighth medium voltage ac tie switch 170.

Specifically, as shown in fig. 1, the first medium voltage ac bus III segment 90 is connected to the first medium voltage ac bus I segment 50 sequentially through the fifth medium voltage ac interconnection switch 140 and the seventh medium voltage ac interconnection switch 160, and this connection manner makes it possible to perform power supply allocation by using the fifth medium voltage ac interconnection switch 140 and the seventh medium voltage ac interconnection switch 160 when the first medium voltage ac bus I segment 50 needs additional power or the first medium voltage ac bus III segment 90 has excessive power. For example, when the first medium voltage ac bus section 50 is under-powered due to a failure or an increase in load of the first commercial power supply 10, power may be supplied from the first medium voltage ac bus section III 90 to the first medium voltage ac bus section 50 by closing the fifth medium voltage ac tie switch 140 and the seventh medium voltage ac tie switch 160 to ensure stable operation of the electronic information device. Conversely, when the first medium voltage ac bus section III 90 has an excessive power supply, the power supply can be effectively utilized by conveying the power supply to the first medium voltage ac bus section I50 through the two tie switches.

The first medium voltage ac bus section III 90 is connected to the first medium voltage ac bus section II 70 via the sixth medium voltage ac tie switch 150 and the eighth medium voltage ac tie switch 170 in sequence, in a manner similar to that described above, but connected to the first medium voltage ac bus section II 70. When the first medium voltage ac bus II section 70 requires additional power or the first medium voltage ac bus III section 90 has redundant power, the power supply may be mutually allocated by the sixth medium voltage ac tie switch 150 and the eighth medium voltage ac tie switch 170. The connection mode enhances the flexibility and redundancy of the power supply system of the data center, so that when one of the first medium-voltage alternating current buses fails or the load is unbalanced, the power distribution can be optimized through adjustment of the interconnection switch, and the stable operation of the data center is ensured.

At least one generator set provides emergency power to the first medium voltage ac bus section 50 through its correspondingly connected third medium voltage ac tie switch 80, fifth medium voltage ac tie switch 140 and seventh medium voltage ac tie switch 160 in sequence when the first and second mains supplies 10, 20 are powered down.

Specifically, as shown in fig. 1, when the first and second mains power supplies 10 and 20 are powered off, at least one generator set will be started to provide emergency power. These generator sets are connected to the first medium voltage ac busbar III section 90 by the third medium voltage ac interconnection switch 80 which is correspondingly connected to them, i.e. the generator set a31 is connected to the first medium voltage ac busbar III section 90 by the third medium voltage ac interconnection switch a81, and the generator set B32 is connected to the first medium voltage ac busbar III section 90 by the third medium voltage ac interconnection switch B82. Subsequently, power provided by the genset will be delivered to the first medium voltage ac busbar I section 50 through the fifth medium voltage ac tie switch 140 and the seventh medium voltage ac tie switch 160.

At least one generator set provides emergency power to the first medium voltage ac busbar II section 70 through its correspondingly connected third medium voltage ac tie switch 80, sixth medium voltage ac tie switch 150 and eighth medium voltage ac tie switch 170 in sequence when the first and second mains supplies 10, 20 are powered off.

Specifically, as shown in fig. 1, when the first and second mains power supplies 10 and 20 are powered off, at least one generator set will be started to provide emergency power. These generator sets are connected to the first medium voltage ac busbar III section 90 by the third medium voltage ac interconnection switch 80 which is correspondingly connected to them, i.e. the generator set a31 is connected to the first medium voltage ac busbar III section 90 by the third medium voltage ac interconnection switch a81, and the generator set B32 is connected to the first medium voltage ac busbar III section 90 by the third medium voltage ac interconnection switch B82. Subsequently, power provided by the genset will be delivered to the first medium voltage ac busbar II section 70 through the sixth medium voltage ac tie switch 150 and the eighth medium voltage ac tie switch 170.

This connection ensures that in case of a mains power failure, the data center can be quickly switched to emergency power mode, thus maintaining continuous operation of the critical electronic information equipment. By flexible operation of the medium voltage ac tie switch, the power distribution can be adjusted according to actual needs, ensuring that the first medium voltage ac bus I section 50 or the first medium voltage ac bus II section 70 is sufficiently supplied with power.

Meanwhile, the connection mode also shows redundancy and reliability of the power supply and distribution system T of the data center. Even if the first mains supply 10 and the second mains supply 20 fail at the same time, the data center can ensure that the power supply of critical loads is not affected by the combination of the generator set and other tie switches.

Therefore, the data center power supply and distribution system T is based on a double-circuit commercial power supply and one-circuit emergency power supply, simplifies the system on the basis of guaranteeing high-reliability direct current power supply, simplifies the whole life cycle work of data center design, purchase, construction, operation and maintenance and the like, reduces about 50% redundancy links of the whole link of the data center power supply, and has the advantages of higher efficiency, high reliability, high power density, convenience in maintenance, short construction period, low operation and maintenance cost and the like.

In one embodiment of the present utility model, as shown in fig. 1, the data center power supply and distribution system T further includes: a ninth medium voltage ac tie switch 180, the first medium voltage ac bus section I50 being connected to the lift bus 190 of the first medium voltage ac bus section II 70 by the ninth medium voltage ac tie switch 180; a three-in-two interlock is provided between the first medium voltage ac interconnection switch 40, the second medium voltage ac interconnection switch 60, and the ninth medium voltage ac interconnection switch 180.

The three-in-two interlocking mechanism is used for ensuring that only two of the three medium-voltage alternating current communication switches can be closed at any time, and the third medium-voltage alternating current communication switch is kept in an open state.

Specifically, as shown in fig. 1, the ninth medium voltage ac interconnection switch 180 is connected through the first medium voltage ac bus I segment 50 and the lifting bus 190 of the first medium voltage ac bus II segment 70, it can be understood that, under a specific power supply requirement, the ninth medium voltage ac interconnection switch 180 can allow a power supply to flow from the first medium voltage ac bus I segment 50 to the lifting bus 190 of the first medium voltage ac bus II segment 70, or vice versa, the ninth medium voltage ac interconnection switch 180 can allow a power supply to flow from the first medium voltage ac bus II segment 70 to the lifting bus 190 of the first medium voltage ac bus I segment 50, so as to implement flexible allocation of the power supply between buses, and such allocation helps balance loads of different bus segments, and ensures stability and efficiency of power supply.

And, the data center adopts the wiring mode of the segmentation single busbar, sets up the three and closes two interlocks between first middling pressure exchange tie switch 40, second middling pressure exchange tie switch 60 and ninth middling pressure exchange tie switch 180. Specifically, during normal operation, the first medium voltage ac interconnection switch 40 of the first commercial power supply 10 and the second medium voltage ac interconnection switch 60 of the second commercial power supply 20 supply power to the first medium voltage ac bus I section 50 and the first medium voltage ac bus II section 70 respectively, the ninth medium voltage ac interconnection switch 180 is turned off, when the first commercial power supply 10 fails or the second commercial power supply 20 fails, the ninth medium voltage ac interconnection switch 180 is put into operation, the first medium voltage ac bus II section 70 supplies power to the first medium voltage ac bus I section 50, or the first medium voltage ac bus I section 50 supplies power to the first medium voltage ac bus II section 70, and the first medium voltage ac bus I section 50 or the first medium voltage ac bus II section 70 can bear 100% of the load, and after the first commercial power supply 10 fails or the second commercial power supply 20 resumes, the state that the first commercial power supply 10 and the second commercial power supply 20 supply power to the first medium voltage ac bus I section 50 and the first medium voltage ac bus II section 70 respectively is restored; when all the first and second commercial power supplies 10 and 20 are powered off, the generator set is started, that is, the generator set a31 and the generator set B32 are started, after the charging of the upper ports of the seventh and eighth medium voltage ac interconnection switches 160 and 170 is detected, the second medium voltage ac interconnection switches 60 and 180 of the first and second medium voltage ac interconnection switches 40 and 70 of the first and second medium voltage ac bus I-sections 50 are opened, the seventh and eighth medium voltage ac interconnection switches 160 and 170 are closed, the first and second medium voltage ac bus I-sections 50 and 70 of the power loss are powered by the generator set, and when the power supply of the first and second commercial power supplies 10 and 20 is restored, the mode of power supply by the first and second commercial power supplies 10 and 20 is switched.

The first medium voltage ac interconnection switch 40, the second medium voltage ac interconnection switch 60 and the ninth medium voltage ac interconnection switch 180 are provided with a three-in-two interlock, so that the problem of short circuit or overload caused by misoperation or faults can be prevented, and the interlock mechanism ensures that the system can safely and reliably operate at any time, and unnecessary energy waste and equipment damage are avoided.

In one embodiment of the present utility model, as shown in fig. 1, the data center power supply and distribution system T further includes: a tenth medium voltage ac tie switch 200, an eleventh medium voltage ac tie switch 210, a first phase-shifting transformer cabinet 220, and a second phase-shifting transformer cabinet 230; the first medium voltage ac bus section I50 is connected to the first phase-shifting transformer cabinet 220 through the tenth medium voltage ac tie switch 200, and the first medium voltage ac bus section II 70 is connected to the second phase-shifting transformer cabinet 230 through the eleventh medium voltage ac tie switch 210; the first phase-shifting transformer cabinet 220 and the second phase-shifting transformer cabinet 230 each include a plurality of fans.

Specifically, the first medium voltage ac bus I section 50 is connected to the first phase-shifting transformer cabinet 220 through the tenth medium voltage ac tie switch 200, and the first medium voltage ac bus II section 70 is connected to the second phase-shifting transformer cabinet 230 through the eleventh medium voltage ac tie switch 210, by this connection, the first medium voltage ac bus I section 50 may directly provide power to the first phase-shifting transformer cabinet 220, and the first medium voltage ac bus II section 70 may directly provide power to the second phase-shifting transformer cabinet 230, so that the first phase-shifting transformer cabinet 220 and the second phase-shifting transformer cabinet 230 may perform phase adjustment of the power according to the load requirement.

The first phase-shifting transformer cabinet 220 and the second phase-shifting transformer cabinet 230 respectively comprise a plurality of fans, meanwhile, the first phase-shifting transformer cabinet 220 and the second phase-shifting transformer cabinet 230 respectively mainly comprise components such as a phase-shifting transformer, a 10KV input wiring row, a secondary low-voltage output wiring row, an input voltage/current detection unit and the like, the first phase-shifting transformer cabinet 220 and the second phase-shifting transformer cabinet 230 respectively adopt a multi-winding design, rectification is carried out after phase shifting, the output windings of the first phase-shifting transformer cabinet 220 and the second phase-shifting transformer cabinet 230 are respectively connected with an AC/DC (alternating current to direct current) rectification unit which is isolated mutually, 240V or 336V direct current is output, a temperature and comprehensive detection module is configured, a multi-fan redundancy design is adopted, stable long-time operation of the transformer cabinets is ensured, for example, the primary side of the phase-shifting transformer cabinet is 10.5KV input, the frequency is 50Hz, the efficiency at 30% -60% of load rate and the ambient temperature at 25 ℃ can reach 90%.

In short, the first phase-shifting transformer cabinet 220 and the second phase-shifting transformer cabinet 230 have a phase-shifting function, and can adjust the phase of the power supply as required, and each phase-shifting transformer cabinet is equipped with a plurality of fans. The fans are used for cooling equipment in the phase-shifting transformer cabinet, and ensure that the fans can normally operate in a high-temperature environment. Meanwhile, the heat dissipation efficiency of the phase-shifting transformer cabinet is improved due to the existence of the fan, and the service life of the equipment is prolonged.

In one embodiment of the present utility model, as shown in fig. 1, the data center power supply and distribution system T further includes: a twelfth medium voltage ac tie switch 240, a thirteenth medium voltage ac tie switch 250, a first feeder loop 260 and a second feeder loop 270.

Wherein the first medium voltage ac bus I section 50 is connected to the first feeder loop 260 through the twelfth medium voltage ac tie switch 240 to provide power to the non-electronic information devices of the data center through the first feeder loop 260; the first medium voltage ac busbar II section 70 is connected to a second feeder loop 270 through a thirteenth medium voltage ac tie switch 250 to provide power to non-electronic information devices of the data center through the second feeder loop 270.

Wherein the non-electronic information device refers to various devices in the data center other than the electronic information device.

Specifically, as shown in fig. 1, the first medium voltage ac bus I section 50 is connected to the first feeder line loop 260 by the twelfth medium voltage ac interconnection switch 240, so that the first medium voltage ac bus I section 50 can directly supply power to the first feeder line loop 260, and the first medium voltage ac bus II section 70 is connected to the second feeder line loop 270 by the thirteenth medium voltage ac interconnection switch 250, so that the first medium voltage ac bus II section 70 can directly supply power to the second feeder line loop 270, so that the first feeder line loop 260 and the second feeder line loop 270 respectively supply power to non-electronic devices of the data center. And, the design of the first feeder circuit 260 and the second feeder circuit 270 can perform independent power distribution and control on non-electronic equipment of the data center, so that the operation risk is reduced.

In one embodiment of the present utility model, as shown in fig. 2, the data center power supply and distribution system T further includes: a first rectifying unit 280 and a second rectifying unit 290.

The first phase-shifting transformer cabinet 220 is connected with the first rectifying unit 280, the second phase-shifting transformer cabinet 230 is connected with the second rectifying unit 290, and the first rectifying unit 280 and the second rectifying unit 290 are used for converting alternating current into direct current; the first rectifying unit 280 and the second rectifying unit 290 include a plurality of rectifying cabinets, respectively.

Specifically, as shown in fig. 1, the first rectification unit 280 may include a plurality of rectification cabinets, including, for example, rectification cabinet a281 and rectification cabinet B282; the second rectifying unit 290 may also include a plurality of rectifying cabinets, including, for example, rectifying cabinet C291 and rectifying cabinet D292. The first phase-shifting transformer cabinet 220 is connected with the first rectifying unit 280, i.e. the first phase-shifting transformer cabinet 220 is connected with the rectifying cabinet a281 and the rectifying cabinet B282; the second phase-shifting transformer cabinet 230 is connected to the second rectifying unit 290, i.e. the second phase-shifting transformer cabinet 230 is connected to the rectifying cabinet C291 and the rectifying cabinet D292. The rectifier cabinet mainly comprises a rectifier module, a rectifier module input breaker and other parts, the input alternating current is converted into direct current through the rectifier module, and the phase-shifting transformer cabinet is adopted, so that the design of a traditional rectifier is simplified, a power factor correction link is removed, the problems of power factors and harmonic currents are solved, and the efficiency of the rectifier reaches more than 98%.

For example, the allowable alternating current input voltage variation range is 8.5 KV-11 KV, the upper limit of the allowable system input voltage variation range is 12KV, the lower limit of the allowable system input voltage variation range is 8.5KV, the lowest voltage protection value of the allowable system input voltage variation maximum range is 7.1KV, the allowable frequency variation range is 50Hz plus or minus 5%, the input voltage waveform distortion degree is <5%, and when rated input voltage, full output and 50% output load are respectively <5% and <8% of input total current harmonic waves of the system; the adjustable range of the 240V system output voltage is set within the range of 204V-288V, and the error is less than or equal to +/-1V; the adjustable range of the output voltage of the 360V system is set within the range of 280V-400V, the error is less than or equal to +/-1.5V, and the voltage stabilizing precision of the system is better than +/-1.0%.

In one embodiment of the present utility model, as shown in conjunction with fig. 1 and 3, the data center power supply and distribution system T further includes: first dc bus 300, first dc output cabinet dc bus 310, second dc bus 320, second dc output cabinet dc bus 330, first dc switch 340, second dc switch 350, and plurality of dc output cabinets 360.

The first rectifying unit 280 is connected to the first dc bus 300, and the first dc bus 300 is connected to the first dc output cabinet dc bus 310 through the first dc switch 340; the second rectifying unit 290 is connected with the second direct current bus 320, and the second direct current bus 320 is connected to the second direct current output cabinet direct current bus 330 through the second direct current switch 350; the first dc output bin dc bus 310 and the second dc output bin dc bus 330 are each connected to a plurality of dc output bins 360.

Specifically, the plurality of dc output cabinets 360 may include dc output cabinet a361, dc output cabinet B362, dc output cabinet C363, dc output cabinet D364, dc output cabinet E365, and dc output cabinet F366, where each dc output cabinet is mainly composed of at least one of a dc load circuit switch, a dc surge protector, a man-machine interface, and the like. The first rectifying unit 280 may convert ac power into dc power, the first rectifying unit 280 is connected to the first dc bus 300, and may provide dc power to the first dc bus 300, the first dc bus 300 is connected to the first dc output cabinet dc bus 310 through the first dc switch 340, the first dc switch 340 may be used to isolate and control the power supply between the first dc bus 300 and the first dc output cabinet dc bus 310, and when a certain circuit portion needs to be maintained or isolated, the first dc output cabinet dc bus 310 is connected to the dc output cabinet B362, the dc output cabinet D364, and the dc output cabinet F366, and the dc output cabinet B362, the dc output cabinet D364, and the dc output cabinet F366 are final distribution points of the dc power. They receive dc power from the first dc output cabinet dc bus 310 and distribute it to the electronic information devices of the data center, such as electronic information device 1, electronic information device 2, and electronic information device n.

Similarly, the second rectifying unit 290 may convert the ac power into dc power, where the second rectifying unit 290 is connected to the second dc bus 320, and may provide dc power to the second dc bus 320, where the second dc bus 320 is connected to the second dc output cabinet dc bus 330 through the second dc switch 350, and where the second dc switch 350 may be used to isolate and control the power flow between the second dc bus 320 and the second dc output cabinet dc bus 330, and when a certain circuit portion needs to be maintained or isolated, the second dc output cabinet dc bus 330 is implemented through the second dc switch 350, and the second dc output cabinet dc bus 330 is connected to the dc output cabinet a361, the dc output cabinet C363, and the dc output cabinet E365, where the dc output cabinet a361, the dc output cabinet C363, and the dc output cabinet E365 are final distribution points of the dc power. They receive dc power from the second dc output cabinet dc bus 330 and distribute it to the electronic information devices of the data center, for example to electronic information device 1, electronic information device 2 and electronic information device n. Furthermore, each dc output cabinet may be equipped with monitoring and protection equipment to ensure stability and safety of the power supply.

In one embodiment of the present utility model, as shown in conjunction with fig. 1 and 4, the data center power supply and distribution system T further includes: the flywheel energy storage unit 370 is connected to the first dc bus 300 and the second dc bus 320, respectively, and is used for being started before the emergency power supply 30 starts loading when the first mains supply 10 and the second mains supply 20 are powered off, so as to provide an emergency power supply for the electronic information equipment of the data center.

The flywheel energy storage unit 370 is an energy storage device that stores energy by a flywheel that rotates with high efficiency, and when the energy needs to be released, the flywheel decelerates and converts the stored mechanical energy into electrical energy.

Specifically, the flywheel energy storage unit 370 is connected to the first dc bus 300 and the second dc bus 320, when the first mains supply 10 and the second mains supply 20 are operating normally, the flywheel energy storage unit 370 is in a charged state, and stores energy by the mains supply, and once the first mains supply 10 and the second mains supply are powered off, the flywheel energy storage unit 370 is started before the emergency power supply 30 starts loading, and releases the stored energy, and the released energy is transmitted to the dc output cabinets 360, such as the dc output cabinet a361, the dc output cabinet B362 and the dc output cabinet C363, through the first dc bus 300 and the second dc bus 320, so as to provide the emergency power for the electronic information devices of the data center.

In one embodiment of the present utility model, as shown in fig. 1, the flywheel energy storage unit 370 includes: the first flywheel energy storage device 371, the first flywheel energy storage device 371 being connected to the first dc bus 300; the second flywheel energy storage device 372, the second flywheel energy storage device 372 being connected to the second dc bus 320.

Specifically, the first flywheel energy storage device 371 is directly connected to the first dc bus 300, which provides emergency power to primarily those electronic information devices that are powered by the first dc bus 300. When the first mains power supply 10 fails, the first flywheel energy storage device 371 is able to quickly start and provide the required dc power to the associated electronic information device via the first dc bus 300. This ensures that these electronic information devices continue to operate properly during a power outage of the first mains power supply 10, thereby maintaining the stability and continuity of the data center.

The second flywheel energy storage device 372 is then directly connected to the second dc bus 320. It is therefore mainly the provision of emergency power for electronic information devices that rely on the second dc bus for power. When the second mains power supply 20 fails, the second flywheel energy storage device 372 will immediately start and provide the required dc power to the associated electronic information device via the second dc bus 320. This also ensures that these electronic information devices can continue to operate during a power outage of the second mains supply 20, thereby reducing the risk of the data centre due to power supply problems.

In one embodiment of the present utility model, as shown in fig. 5, the data center power supply and distribution system T further includes: the plurality of first cabinets 380 of row, the one end of a plurality of first cabinets 380 of row corresponds to and connects a plurality of direct current output cabinets 360 one by one, and the electronic information equipment of data center is connected to the other end of a plurality of first cabinets 380 of row.

Specifically, as shown in fig. 1, the plurality of column-top cabinets 380 include, for example, a column-top cabinet a381, a column-top cabinet B382, a column-top cabinet C383, a column-top cabinet D384, a column-top cabinet E385 and a column-top cabinet F386, and one end of the plurality of column-top cabinets 380 is connected to the plurality of dc output cabinets 360 in a one-to-one correspondence, which is to be understood that each column-top cabinet is connected to a specific dc output cabinet, that is, the column-top cabinet a381 is connected to the dc output cabinet a361 to receive the dc power distributed from the dc output cabinet a 361; the column header cabinet B382 is connected with the direct current output cabinet B362 to receive the direct current power distributed from the direct current output cabinet B362; the column head cabinet C383 is connected with the direct-current output cabinet C363 to receive the direct-current power distributed from the direct-current output cabinet C363; the row header cabinet D384 is connected with the direct current output cabinet D364 to receive the direct current power distributed from the direct current output cabinet D364; the column head cabinet E385 is connected with the direct current output cabinet E365 so as to receive the direct current power distributed from the direct current output cabinet E365; the column header cabinet F386 is connected to the dc output cabinet F366 to receive dc power distributed from the dc output cabinet F366. The one-to-one connection mode ensures the accuracy and the reliability of power supply and avoids the risks of power confusion or wrong distribution.

Meanwhile, the other ends of the plurality of column header cabinets 380 are directly connected to the electronic information equipment of the data center. These electronic information devices may include servers, storage devices, network devices, etc., which are the core of the data center operation. The column head cabinet provides stable and reliable direct current power supply for the devices, and ensures the stability and performance of the devices in the running process. The column head cabinet also has various protection functions, such as overcurrent protection, overvoltage protection, undervoltage protection and the like, and the protection functions can ensure that the electronic information equipment can be timely protected when suffering from abnormal conditions, so that equipment damage or data loss is avoided. In addition, the column head cabinet is also commonly provided with monitoring and measuring functions, so that parameters such as the state, current, voltage and the like of the power supply can be monitored in real time, powerful support is provided for operation and maintenance personnel of the data center, and the operation and maintenance personnel can be helped to find problems in time and process the problems.

In one embodiment of the utility model, the generator set is a generator set that generates electricity using gas or fuel.

Specifically, a generator set that generates electricity by using fuel gas or fuel oil is generally used as a standby or emergency power source, and forms a multi-level power supply guarantee system together with a commercial power supply and other power supplies such as a flywheel energy storage unit 370. Thus, even if the mains supply fails, the data center can be quickly switched to the standby power supply, and continuous operation of the electronic information equipment is ensured. The generator set generating electricity by adopting the fuel gas or the fuel oil provides quick, reliable and environment-friendly emergency power supply for the data center, and enhances the reliability and stability of the data center.

In general, under normal conditions, the first commercial power supply 10 and the second commercial power supply 20 independently supply power to the electronic information devices, the two power supply systems work simultaneously and are standby, the first commercial power supply 10 supplies power to the electronic information devices 1 to n through the first medium voltage ac interconnection switch 40, the first medium voltage ac bus I section 50, the twelfth medium voltage ac interconnection switch 240, the first phase-shifting transformer cabinet 220, the first rectifying unit 280, the first dc bus 300, the first dc switch 340, the first dc output cabinet dc bus 310, the plurality of dc output cabinets 360 and the plurality of train head cabinets 370, and the first flywheel energy storage device 371 is in a state of full electric standby; the second mains supply 20 supplies power to the electronic information devices 1-n through the second medium voltage ac interconnection switch 60, the first medium voltage ac bus II section 70, the lifting bus 190, the second phase-shifting transformer cabinet 230, the second rectifying unit 290, the second dc bus 320, the second dc switch 350, the second dc output cabinet dc bus 330, the plurality of dc output cabinets 360 and the plurality of row-header cabinets 380, and the second flywheel energy storage device 372 is in a full-charge standby state; the first mains supply 10 and the second mains supply 20 each provide 50% of the electrical power for the electronic information device load; at this time, the ninth medium voltage ac interconnection switch 180, the seventh medium voltage ac interconnection switch 160, and the eighth medium voltage ac interconnection switch 170 are turned off.

When the first mains supply 10 and the second mains supply 20 are powered off, the ninth medium voltage ac interconnection switch 180 is put into operation, the first medium voltage ac bus II segment 70 supplies power to the first medium voltage ac bus I segment 50, or the first medium voltage ac bus I segment 50 supplies power to the first medium voltage ac bus II segment 70, and during the closing period of the ninth medium voltage ac interconnection switch 180, if a short-time power failure condition occurs, the first flywheel energy storage device 371 and the second flywheel energy storage device 372 supply power to the electronic information devices 1 to n through the first dc bus 300 and the second dc bus 320, the first dc switch 340 and the second dc switch 350, the first dc output cabinet dc bus 310 and the second dc output cabinet dc bus 330, the plurality of dc output cabinets 360 and the plurality of train head cabinets 380, so as to solve the voltage sag, the sag and the short-time voltage interruption.

When all of the first and second mains supplies 10 and 20 are powered off, the first and second flywheel energy storage devices 371 and 372 supply power to the electronic information devices 1 to n via the first and second dc buses 300 and 320, the first and second dc switches 340 and 350, the first and second dc output cabinet dc buses 310 and 330, the plurality of dc output cabinets 360 and the plurality of column-top cabinets 380, while the emergency power supply 30 is started, and after detecting that the upper ports of the seventh and eighth medium voltage ac tie switches 160 and 170 are charged, the first medium voltage ac interconnection switch 40 and the second medium voltage ac interconnection switch 60 and the ninth medium voltage ac interconnection switch 180 of the first medium voltage ac bus I section 50 and the first medium voltage ac bus II section 70 are opened, the first medium voltage ac interconnection switch 40 and the second medium voltage ac interconnection switch 60 are closed, the first medium voltage ac bus I section 50 and the first medium voltage ac bus II section 70 are powered by the emergency power supply 30, the first flywheel energy storage device 371 and the second flywheel energy storage device 372 are always powered by the emergency power supply 30 during the period when the emergency power supply 30 starts loading, when the power supply of the first mains power supply 10 and the second mains power supply 20 is restored, the first flywheel energy storage device 371 and the second flywheel energy storage device 372 are switched to the mode of being powered by the first mains power supply 10 and the second mains power supply 20, and the first flywheel energy storage device 371 and the second flywheel energy storage device 372 are restored to the full-charge standby state.

In summary, according to the data center power supply and distribution system T provided by the embodiment of the utility model, based on a two-way mains supply and one-way emergency supply, the technologies of a phase-shifting transformer, a rectifier, direct current distribution, flywheel energy storage and the like are combined, the system is simplified on the basis of guaranteeing high-reliability direct current power supply, the whole life cycle work of the data center design, purchase, construction, operation and maintenance and the like is simplified, about 50% redundant links of the whole link of the data center power supply are reduced, and the data center power supply system T has the advantages of being higher in efficiency, high in reliability, high in power density, convenient to maintain, short in construction period, low in operation and maintenance cost and the like.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (8)

1. A data center power supply and distribution system, comprising: the system comprises a first mains supply, a second mains supply, an emergency power supply, a first medium voltage alternating current interconnection switch, a first medium voltage alternating current bus I section, a second medium voltage alternating current interconnection switch, a first medium voltage alternating current bus II section, at least one third medium voltage alternating current interconnection switch, a first medium voltage alternating current bus III section, a fourth medium voltage alternating current interconnection switch, a first medium voltage bus voltage transformer cabinet, a second medium voltage bus voltage transformer cabinet, a third medium voltage bus voltage transformer cabinet, a fifth medium voltage alternating current interconnection switch, a sixth medium voltage alternating current interconnection switch, a seventh medium voltage alternating current interconnection switch, an eighth medium voltage alternating current interconnection switch, a tenth medium voltage alternating current interconnection switch, an eleventh medium voltage alternating current interconnection switch, a first phase-shifting transformer cabinet, a second phase-shifting transformer cabinet, a first rectifying unit and a second rectifying unit;

the first commercial power supply and the second commercial power supply are mutually independent, and the first commercial power supply and the second commercial power supply are used for jointly providing working power for electronic information equipment of the data center;

the first commercial power supply is connected to the first medium-voltage alternating current bus section I through the first medium-voltage alternating current interconnection switch, and the second commercial power supply is connected to the first medium-voltage alternating current bus section II through the second medium-voltage alternating current interconnection switch;

The emergency power supply comprises at least one generator set, at least one generator set is connected into the first medium-voltage alternating current bus III section in a one-to-one correspondence manner through at least one third medium-voltage alternating current interconnection switch, and the first medium-voltage alternating current bus III section is connected with a test load through a fourth medium-voltage alternating current interconnection switch;

the first medium-voltage alternating current bus I section is connected with the first medium-voltage bus voltage transformer cabinet, the first medium-voltage alternating current bus II section is connected with the second medium-voltage bus voltage transformer cabinet, and the first medium-voltage alternating current bus III section is connected with the third medium-voltage bus voltage transformer cabinet;

the first medium-voltage alternating current bus III section is connected to the first medium-voltage alternating current bus I section through the fifth medium-voltage alternating current interconnection switch and the seventh medium-voltage alternating current interconnection switch in sequence, and the first medium-voltage alternating current bus III section is connected to the first medium-voltage alternating current bus II section through the sixth medium-voltage alternating current interconnection switch and the eighth medium-voltage alternating current interconnection switch in sequence;

when the first commercial power supply and the second commercial power supply are in power failure, at least one generator set provides emergency power for the first medium-voltage alternating current bus section I through a third medium-voltage alternating current interconnection switch, a fifth medium-voltage alternating current interconnection switch and a seventh medium-voltage alternating current interconnection switch which are correspondingly connected with the generator set in sequence;

When the first commercial power supply and the second commercial power supply are in power failure, at least one generator set provides emergency power for the first medium-voltage alternating current bus section II through a third medium-voltage alternating current interconnection switch, a sixth medium-voltage alternating current interconnection switch and an eighth medium-voltage alternating current interconnection switch which are correspondingly connected with the generator set in sequence;

the first medium-voltage alternating current bus I section is connected to the first phase-shifting transformer cabinet through the tenth medium-voltage alternating current interconnection switch, and the first medium-voltage alternating current bus II section is connected to the second phase-shifting transformer cabinet through the eleventh medium-voltage alternating current interconnection switch;

the first phase-shifting transformer cabinet and the second phase-shifting transformer cabinet comprise a plurality of fans;

the first phase-shifting transformer cabinet is connected with the first rectifying unit, the second phase-shifting transformer cabinet is connected with the second rectifying unit, and the first rectifying unit and the second rectifying unit are used for converting alternating current into direct current;

the first rectifying unit and the second rectifying unit respectively comprise a plurality of rectifying cabinets.

2. The data center power supply and distribution system of claim 1, further comprising:

the ninth medium voltage alternating current interconnection switch is connected with the lifting bus of the first medium voltage alternating current bus II section through the ninth medium voltage alternating current interconnection switch;

And a three-in-two interlock is arranged among the first medium voltage alternating current interconnection switch, the second medium voltage alternating current interconnection switch and the ninth medium voltage alternating current interconnection switch.

3. The data center power supply and distribution system of claim 1, further comprising: a twelfth medium voltage ac tie switch, a thirteenth medium voltage ac tie switch, a first feeder loop and a second feeder loop;

the first medium-voltage alternating current bus section I is connected with the first feeder line loop through the twelfth medium-voltage alternating current interconnection switch so as to provide power for non-electronic information equipment of the data center through the first feeder line loop;

the first medium-voltage alternating current bus section II is connected with the second feeder line loop through the thirteenth medium-voltage alternating current interconnection switch so as to provide power for non-electronic information equipment of the data center through the second feeder line loop.

4. The data center power supply and distribution system of claim 1, further comprising: the system comprises a first direct current bus, a first direct current output cabinet direct current bus, a second direct current output cabinet direct current bus, a first direct current switch, a second direct current switch and a plurality of direct current output cabinets;

The first rectifying unit is connected with the first direct current bus, and the first direct current bus is connected to the first direct current output cabinet direct current bus through the first direct current switch;

the second rectifying unit is connected with the second direct current bus, and the second direct current bus is connected to the second direct current output cabinet direct current bus through the second direct current switch;

the first direct current output cabinet direct current bus and the second direct current output cabinet direct current bus are respectively connected with the plurality of direct current output cabinets.

5. The data center power supply and distribution system of claim 4, further comprising:

the flywheel energy storage unit is connected with the first direct current bus and the second direct current bus respectively and is used for being started before the emergency power supply is started to load when the first mains supply and the second mains supply are in power failure so as to provide emergency power for electronic information equipment of the data center.

6. The data center power supply and distribution system of claim 5, wherein the flywheel energy storage unit comprises:

the first flywheel energy storage device is connected with the first direct current bus; and the second flywheel energy storage device is connected with the second direct current bus.

7. The data center power supply and distribution system of claim 4, further comprising:

the system comprises a plurality of row-head cabinets, wherein one ends of the row-head cabinets are connected with the plurality of direct-current output cabinets in a one-to-one correspondence manner, and the other ends of the row-head cabinets are connected with electronic information equipment of a data center.

8. The data center power supply and distribution system of claim 1, wherein the generator set is a generator set that generates electricity using gas or fuel.