IT equipment power supply and distribution electrical architecture

Abstract

The utility model relates to an electrical architecture for power supply and distribution of IT equipment. Comprising a first split winding transformer, a second split winding transformer, a first uninterruptible power supply module, a second uninterruptible power supply module, a third uninterruptible power supply module, a fourth uninterruptible power supply module, a first input busbar, a second input busbar, a third input busbar, a fourth input busbar, a first input switch and a first output switch. A second input switch, a second output switch, a third input switch, a third output switch, a fourth input switch, a fourth output switch, a first output busbar, a second output busbar, a third output busbar and a fourth output busbar; the first uninterruptible power supply module and the fourth uninterruptible power supply module jointly supply power to the first batch of IT devices, and the second uninterruptible power supply module and the third uninterruptible power supply module jointly supply power to the second batch of IT devices. The purposes of reliability, compatibility and low investment cost of power supply and distribution of IT equipment are achieved.

Description

Technical Field

[0001] The utility model relates to the field of communication and data center with high power supply requirements, and in particular to an electrical architecture for power supply and distribution of IT equipment. Background Art

[0002] A notable feature of current computing centers is their high-performance computing resources, which usually include multiple high-performance CPU cores and powerful GPUs to support large-scale parallel computing, thereby accelerating the processing of complex tasks. This makes computing centers also face higher power consumption. At the same time, the capacity of electrical equipment including transformers and UPS is also increased accordingly, resulting in more electrical devices for distribution structures and larger specifications, which greatly increases the cost investment.

[0003] At the same time, in order to eliminate single point failures, high-level data centers require a redundant system. The total capacity of N UPS devices in each UPS system is the basic capacity of the system. The AC input passes through the UPS device to the dual power input load. All links and equipment in the entire power supply path are redundantly configured. During normal operation, each UPS system only bears a part of the total load. This redundant power supply method of multiple power systems can overcome the single point failure bottleneck of a single power system. At this time, a power supply and distribution architecture with high reliability, strong compatibility and controllable construction costs is required in the power supply system of the computing center. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, the purpose of the utility model is to provide an electrical architecture for power supply and distribution of IT equipment, which forms a new power supply system by setting a split winding transformer and a single large-capacity UPS in the field of computing power center, realizes dual power input for computing power equipment, and achieves the goals of reliability, compatibility and low investment cost in power supply and distribution of IT equipment.

[0005] The technical solution of the implementation case of the utility model is as follows:

[0006] An IT equipment power supply and distribution electrical architecture, the electrical architecture comprising a first split-winding transformer, a second split-winding transformer, a first uninterruptible power supply module, a second uninterruptible power supply module, a third uninterruptible power supply module, a fourth uninterruptible power supply module, a first input busbar, a second input busbar, a third input busbar, a fourth input busbar, a first input switch, a first output switch, a second input switch, a second output switch, a third input switch, a third output switch, a fourth input switch, a fourth output switch, a first output busbar, a second output busbar, a third output busbar, and a fourth output busbar;

[0007] The high-voltage input end of the first split-winding transformer is electrically connected to the first mains terminal, the first low-voltage output end of the first split-winding transformer is electrically connected to the first input busbar, the first input busbar is electrically connected to one end of the first input switch, the other end of the first input switch is electrically connected to the input end of the first uninterruptible power supply module, the output end of the first uninterruptible power supply module is electrically connected to one end of the first output switch, the other end of the first output switch is electrically connected to the first output busbar, and the first output busbar is electrically connected to the power access end of the first batch of IT equipment in the computing center computer room through cables;

[0008] The second low-voltage output end of the first split-winding transformer is electrically connected to the second input busbar, the second input busbar is electrically connected to one end of the second input switch, the other end of the second input switch is electrically connected to the input end of the second uninterruptible power supply module, the output end of the second uninterruptible power supply module is electrically connected to one end of the second output switch, the other end of the second output switch is electrically connected to the second output busbar, and the second output busbar is electrically connected to the power access end of the second batch of IT equipment in the computing center computer room through a cable;

[0009] The high-voltage input end of the second split-winding transformer is electrically connected to the second mains terminal, the first low-voltage output end of the second split-winding transformer is electrically connected to the third input busbar, the third input busbar is electrically connected to one end of the third input switch, the other end of the third input switch is electrically connected to the input end of the third uninterruptible power supply module, the output end of the third uninterruptible power supply module is electrically connected to one end of the third output switch, the other end of the third output switch is electrically connected to the third output busbar, and the third output busbar is electrically connected to the power access end of the first batch of IT equipment in the computing center computer room through cables;

[0010] The high-voltage input end of the second split-winding transformer is electrically connected to the second mains terminal, the second low-voltage output end of the second split-winding transformer is electrically connected to the fourth input busbar, the fourth input busbar is electrically connected to one end of the fourth input switch, the other end of the fourth input switch is electrically connected to the input end of the fourth uninterruptible power supply module, the output end of the fourth uninterruptible power supply module is electrically connected to one end of the fourth output switch, the other end of the fourth output switch is electrically connected to the fourth output busbar, and the fourth output busbar is electrically connected to the power access end of the second batch of IT equipment in the computing center computer room through a cable;

[0011] The first uninterruptible power supply module and the third uninterruptible power supply module jointly supply power to a first batch of multiple IT devices, and the second uninterruptible power supply module and the fourth uninterruptible power supply module jointly supply power to a second batch of multiple IT devices.

[0012] Preferably, it also includes a first low-voltage power distribution control cabinet and a second low-voltage power distribution control cabinet, the first input busbar, the second input busbar, the first input switch, the first output switch, the second input switch, the second output switch, the first output busbar, and the second output busbar are fixedly arranged in the first low-voltage power distribution control cabinet, and the third input busbar, the fourth input busbar, the third input switch, the third output switch, the fourth input switch, the fourth output switch, the third output busbar, and the fourth output busbar are fixedly arranged in the second low-voltage power distribution control cabinet,

[0013] Preferably, it also includes a first maintenance switch, a second maintenance switch, a third maintenance switch, and a fourth maintenance switch, wherein the two ends of the first maintenance switch are electrically connected to the first input busbar and the first output busbar, respectively, the two ends of the second maintenance switch are electrically connected to the second input busbar and the second output busbar, respectively, the two ends of the third maintenance switch are electrically connected to the third input busbar and the third output busbar, respectively, the two ends of the fourth maintenance switch are electrically connected to the fourth input busbar and the fourth output busbar, respectively, the first maintenance switch and the second maintenance switch are fixedly arranged in the first low-voltage power distribution control cabinet, and the third maintenance switch and the fourth maintenance switch are fixedly arranged in the second low-voltage power distribution control cabinet.

[0014] Preferably, it also includes a first high-voltage power distribution control cabinet and a second high-voltage power distribution control cabinet, and the first high-voltage power distribution control cabinet and the second high-voltage power distribution control cabinet both have a power input switch circuit, a safety switch circuit, a diesel generator power supply switch circuit, a power output switch circuit, a reserved switch circuit, and a high-voltage bus-tie switch circuit. The input end of the power input switch circuit is electrically connected to the first mains power end and the second mains power end, the output end of the diesel generator power supply switch circuit is electrically connected to an external diesel generator, and the output end of the power output switch circuit is electrically connected to the high-voltage input end of the first split-winding transformer and the second split-winding transformer.

[0015] Preferably, it also includes a high-voltage interconnected busbar, and both ends of the high-voltage interconnected busbar are electrically connected to the output ends of the high-voltage bus-tie switch circuits in the first high-voltage power distribution control cabinet and the second high-voltage power distribution control cabinet, respectively.

[0016] Compared with the prior art, the beneficial effect of the utility model is that: by adopting a split winding transformer, a transformer is provided with two independent branches with equal rated capacity, and there is no electrical connection between the two branches, so that the short-circuit current of the two output ends is effectively reduced, and the entire electrical circuit has redundant output branch backup functions, maintaining the normal power supply of the entire system when one of the branches fails. Since there are two branch output ends, the current is halved relative to one branch output end, which correspondingly reduces the specifications of the busbar and the specifications of the circuit breaker switch in the electrical structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of an electrical architecture for power supply and distribution of IT equipment in the utility model;

[0018] 10. First high-voltage power distribution control cabinet; 11. Power input switch circuit; 12. Safety switch circuit; 13. Diesel power supply switch circuit; 14. Power output switch circuit; 15. Reserve switch circuit; 16. High-voltage busbar switch circuit; 20. Second high-voltage power distribution control cabinet; 30. First low-voltage power distribution control cabinet; 40. Second low-voltage power distribution control cabinet; 50. Second batch of IT equipment; 60. First batch of IT equipment; 70. High-voltage interconnected busbar; A1. First mains terminal; B1. Second mains terminal; AT. First split-winding transformer; BT. First split-winding transformer; UPS-A1. First uninterruptible power supply module; UPS-A2. Second uninterruptible power supply module; UPS-B1. Third uninterruptible power supply module Power supply module; UPS-B2, the fourth uninterruptible power supply module; M1, the first input busbar; M2, the second input busbar; M3, the third input busbar; M4, the fourth input busbar; N1, the first output busbar; N2, the second output busbar; N3, the third output busbar; N4, the fourth output busbar; AQF1: the first input switch; AQF2: the first maintenance switch; AQF3: the first output switch; AQF4: the second input switch; AQF5: the second maintenance switch; AQF6: the second output switch; BQF1: the third input switch; BQF2: the third maintenance switch; BQF3: the third output switch; BQF4: the fourth input switch; BQF5: the fourth maintenance switch; BQF6: the fourth output switch;. DETAILED DESCRIPTION

[0019] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0020] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0022] like Figure 1 As shown, Figure 1 This is a schematic diagram of an IT equipment power supply and distribution electrical architecture in the utility model; an IT equipment power supply and distribution electrical architecture, the electrical architecture comprising a first split winding transformer AT, a second split winding transformer BT, a first uninterruptible power supply module UPS-A1, a second uninterruptible power supply module UPS-A2, a third uninterruptible power supply module UPS-B1, a fourth uninterruptible power supply module UPS-B2, a first input busbar M1, a second input busbar M2, a third input busbar M3, a fourth input busbar M4, a first input switch AQF1, a first output switch AQF3, a second input switch AQF4, a second output switch AQF6, a third input switch BQF1, a third output switch BQF3, a fourth input switch BQF4, a fourth output switch BQF6, a first output busbar N1, a second output busbar N2, a third output busbar N3 and a fourth output busbar N4.

[0023] The high-voltage input end of the first split-winding transformer is electrically connected to the first mains terminal A1, the first low-voltage output end of the first split-winding transformer is electrically connected to the first input busbar, the first input busbar is electrically connected to one end of the first input switch, the other end of the first input switch is electrically connected to the input end of the first uninterruptible power supply module, the output end of the first uninterruptible power supply module is electrically connected to one end of the first output switch, the other end of the first output switch is electrically connected to the first output busbar, and the first output busbar is electrically connected to the power access end of the first batch of IT equipment 50 in the computing center computer room through a cable.

[0024] The second low-voltage output end of the first split-winding transformer is electrically connected to the second input busbar, the second input busbar is electrically connected to one end of the second input switch, the other end of the second input switch is electrically connected to the input end of the second uninterruptible power supply module, the output end of the second uninterruptible power supply module is electrically connected to one end of the second output switch, the other end of the second output switch is electrically connected to the second output busbar, and the second output busbar is electrically connected to the power access end of the second batch of IT equipment 60 in the computing center computer room through a cable.

[0025] The high-voltage input end of the second split-winding transformer is electrically connected to the second mains terminal B1, the first low-voltage output end of the second split-winding transformer is electrically connected to the third input busbar, the third input busbar is electrically connected to one end of the third input switch, the other end of the third input switch is electrically connected to the input end of the third uninterruptible power supply module, the output end of the third uninterruptible power supply module is electrically connected to one end of the third output switch, the other end of the third output switch is electrically connected to the third output busbar, and the third output busbar is electrically connected to the power access end of the first batch of IT equipment 60 in the computing center computer room through cables.

[0026] The high-voltage input end of the second split-winding transformer is electrically connected to the second mains power end, the second low-voltage output end of the second split-winding transformer is electrically connected to the fourth input busbar, the fourth input busbar is electrically connected to one end of the fourth input switch, the other end of the fourth input switch is electrically connected to the input end of the fourth uninterruptible power supply module, the output end of the fourth uninterruptible power supply module is electrically connected to one end of the fourth output switch, the other end of the fourth output switch is electrically connected to the fourth output busbar, and the fourth output busbar is electrically connected to the power access end of the second batch of IT equipment 50 in the computing center computer room through a cable.

[0027] The first uninterruptible power supply module and the third uninterruptible power supply module jointly supply power to a first batch of IT equipment, and the second uninterruptible power supply module and the fourth uninterruptible power supply module jointly supply power to a second batch of IT equipment.

[0028] This power supply and distribution electrical architecture is mainly used to supply and distribute power to IT equipment in the computing center computer room. This power supply and distribution electrical architecture includes two split-winding transformers, four uninterruptible power supply modules, and multiple busbars and control switches. The capacity of the uninterruptible power supply module matches the capacity of the split-winding transformer, such as: a 2500kVA split-winding transformer can be matched with two uninterruptible power supply modules with a single capacity of 1200kVA, and a 3150kVA split-winding transformer can be matched with two uninterruptible power supply modules with a single capacity of 1600kVA. The split-winding transformer in the utility model is a special power transformer, and its structural feature is that the low-voltage winding is split into two branches with equal rated capacity. There is no electrical connection between these branches, only a weak magnetic connection. This power supply and distribution electrical architecture adopts a master-slave redundant architecture. Taking two split-winding transformers as an example, the first AC power supply end of A1 and the second AC power supply end of B1 respectively provide 10kV to the high-voltage end of the two split-winding transformers, which are transformed into 0.4kV by the split-winding transformers and directly output to the corresponding two uninterruptible power supply modules in two branches. The IT equipment is powered by the uninterruptible power supply modules. The two low-voltage branches under the same split-winding transformer are two power supply lines that are completely isolated from each other. The first uninterruptible power supply module in the first split winding transformer supplies power to the first batch of IT equipment, and the second uninterruptible power supply module in the first split winding transformer supplies power to the second batch of IT equipment. In order to ensure the reliability of the system, all links and equipment in the entire power supply path are redundantly configured. Under normal circumstances, the first split winding transformer and the second split winding transformer, the first uninterruptible power supply module, the second uninterruptible power supply module, the third uninterruptible power supply module, and the fourth uninterruptible power supply module work simultaneously, among which the first split winding transformer and the second split winding transformer are backup for each other, the first uninterruptible power supply module and the third uninterruptible power supply module are backup for each other, and the second uninterruptible power supply module and the fourth uninterruptible power supply module The blocks serve as backup for each other, the third uninterruptible power supply module in the second split-winding transformer supplies power to the first batch of IT equipment, and the fourth uninterruptible power supply module in the second split-winding transformer supplies power to the second batch of IT equipment. When no fault occurs, the first uninterruptible power supply module and the third uninterruptible power supply module each provide half of the power to supply power to the first batch of IT equipment, and the second uninterruptible power supply module and the fourth uninterruptible power supply module each provide half of the power to supply power to the second batch of IT equipment. When a fault occurs, such as the first uninterruptible power supply module fails, the third uninterruptible power supply module provides all the power to supply power to the first batch of IT equipment; if the second uninterruptible power supply module fails, the fourth uninterruptible power supply module provides all the power to supply power to the second batch of IT equipment.

[0029] The power distribution electrical architecture of the utility model uses a split-winding transformer, which has the following performance, reliability and cost advantages in the electrical architecture compared to the use of a single-winding transformer:

[0030] 1. Reduce the short-circuit current between the two branches: One of the main advantages of the split winding transformer is that it can effectively limit the short-circuit current. When the transformer is operating normally, power transmission is only carried out between the high and low voltage windings. However, in the event of a fault, due to the split design of the low voltage winding, the short-circuit current will pass through the so-called half-through impedance. This impedance is larger than the short-circuit impedance of an ordinary transformer. Due to the large impedance and constant voltage, the short-circuit current of the branch will become smaller, so it can effectively reduce the size of the short-circuit current;

[0031] 2. Improve operational feasibility: If one branch of the split transformer's low-voltage winding fails, the other branches can still continue to operate, which greatly improves the system's reliability and operational feasibility. This design is particularly suitable for situations that require high availability. For example, in a large power plant, two motors that are backed up by each other can be connected to two low-voltage windings respectively. Even if one of the windings fails, the other winding can still ensure the normal operation of the system;

[0032] 3. Reduce busbar and circuit breaker switch specifications: Split winding transformers divide the current into two, halving the current value, and correspondingly reducing the specification requirements for busbars / copper bars and circuit breakers. This not only reduces the risk of equipment damage, but also reduces maintenance and replacement costs.

[0033] In order to apply the architecture electrical circuit more safely and conveniently, preferably, it also includes a first low-voltage power distribution control cabinet 30 and a second low-voltage power distribution control cabinet 40, and the first input busbar, the second input busbar, the first input switch, the first output switch, the second input switch, the second output switch, the first output busbar, and the second output busbar are fixedly arranged in the first low-voltage power distribution control cabinet, and the third input busbar, the fourth input busbar, the third input switch, the third output switch, the fourth input switch, the fourth output switch, the third output busbar, and the fourth output busbar are fixedly arranged in the second low-voltage power distribution control cabinet.

[0034] By integrating the electrical circuit breaker control switches and electrical busbars in the electrical architecture into the low-voltage power distribution control cabinet, the space occupied by the architecture is saved, the control operation of the entire architecture system can be controlled through a single location point, and the safety of personnel use is improved.

[0035] In order to repair the electrical architecture faster and safer, preferably, it also includes a first maintenance switch; AQF2, a second maintenance switch AQF5, a third maintenance switch BQF2, and a fourth maintenance switch BQF5, wherein the two ends of the first maintenance switch are electrically connected to the first input busbar and the first output busbar respectively, the two ends of the second maintenance switch are electrically connected to the second input busbar and the second output busbar respectively, the two ends of the third maintenance switch are electrically connected to the third input busbar and the third output busbar respectively, the two ends of the fourth maintenance switch are electrically connected to the fourth input busbar and the fourth output busbar respectively, the first maintenance switch and the second maintenance switch are fixedly arranged in the first low-voltage power distribution control cabinet, and the third maintenance switch and the fourth maintenance switch are fixedly arranged in the second low-voltage power distribution control cabinet.

[0036] By installing maintenance switches on the bypasses of the four branches of the first uninterruptible power supply module, the second uninterruptible power supply module, the third uninterruptible power supply module and the fourth uninterruptible power supply module, when the corresponding branch needs to be repaired, the corresponding maintenance switch can be closed. Similarly, in order to facilitate control, the utility model sets the maintenance switch in the low-voltage power distribution control cabinet.

[0037] In order to effectively control the city power and expand the power supply and distribution service for the entire data center, preferably, it also includes a first high-voltage power distribution control cabinet 10 and a second high-voltage power distribution control cabinet 20. The first high-voltage power distribution control cabinet 10 and the second high-voltage power distribution control cabinet 20 both have a power input switch circuit 11, a safety switch circuit 12, a diesel power supply switch circuit 13, a power output switch circuit 14, a reserved switch circuit 15, and a high-voltage busbar switch circuit 16. The input end of the power input switch circuit is electrically connected to the first city power end and the second city power end, the output end of the diesel power supply switch circuit is electrically connected to the external diesel generator, and the output end of the power output switch circuit is electrically connected to the high-voltage input end of the first split winding transformer and the second split winding transformer.

[0038] The mains power is controlled and managed through the high-voltage distribution control cabinet. The high-voltage distribution control cabinet is equipped with a power input switch circuit, which controls the mains power input terminal and can disconnect the mains power according to the actual situation. There is also a safety circuit connected to other circuits, which can also disconnect the mains power in case of emergencies. The diesel generator switch circuit supplies power to the diesel generator, and the power output switch circuit supplies power to the transformer. In case of transformer failure, the shell is disconnected. In order to expand other functions, a switch circuit is reserved. At the same time, in order to achieve mutual main and standby redundancy with other mains, a high-voltage bus-coupled switch circuit is also set up, which can be achieved by electrically connecting the high-voltage bus-coupled switch circuits of multiple mains.

[0039] In order to realize the main and standby redundancy of the mains power, preferably, a high-voltage interconnected busbar 70 is also included, and the two ends of the high-voltage interconnected busbar 70 are electrically connected to the output ends of the high-voltage bus-tie switch circuits in the first high-voltage power distribution control cabinet and the second high-voltage power distribution control cabinet respectively.

[0040] By electrically connecting the high-voltage bus-coupled switch circuits in the high-voltage distribution control cabinets of the two mains, the utility model adopts a high-voltage interconnected busbar to connect the two high-voltage bus-coupled switch circuits, thereby realizing redundant backup of the two mains. When one of the lines fails, the other line is energized through the high-voltage interconnected busbar.

[0041] Compared with the prior art, the beneficial effect of the utility model is that: by adopting a split winding transformer, a transformer is provided with two independent branches with equal rated capacity, and there is no electrical connection between the two branches, so that the short-circuit current of the two output ends is effectively reduced, and the entire electrical circuit has redundant output branch backup functions, maintaining the normal power supply of the entire system when one of the branches fails. Since there are two branch output ends, the current is halved relative to one branch output end, which correspondingly reduces the specifications of the busbar and the specifications of the circuit breaker switch in the electrical structure.

[0042] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0043] The above embodiments only express the preferred implementation of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. An electrical architecture for power supply and distribution of IT equipment, characterized by: The electrical architecture includes a first split-winding transformer, a second split-winding transformer, a first uninterruptible power supply module, a second uninterruptible power supply module, a third uninterruptible power supply module, a fourth uninterruptible power supply module, a first input busbar, a second input busbar, a third input busbar, a fourth input busbar, a first input switch, a first output switch, a second input switch, a second output switch, a third input switch, a third output switch, a fourth input switch, a fourth output switch, a first output busbar, a second output busbar, a third output busbar, and a fourth output busbar; The high-voltage input end of the first split-winding transformer is electrically connected to the first mains terminal, the first low-voltage output end of the first split-winding transformer is electrically connected to the first input busbar, the first input busbar is electrically connected to one end of the first input switch, the other end of the first input switch is electrically connected to the input end of the first uninterruptible power supply module, the output end of the first uninterruptible power supply module is electrically connected to one end of the first output switch, the other end of the first output switch is electrically connected to the first output busbar, and the first output busbar is electrically connected to the power access end of the first batch of IT equipment in the computing center computer room through cables; The second low-voltage output end of the first split-winding transformer is electrically connected to the second input busbar, the second input busbar is electrically connected to one end of the second input switch, the other end of the second input switch is electrically connected to the input end of the second uninterruptible power supply module, the output end of the second uninterruptible power supply module is electrically connected to one end of the second output switch, the other end of the second output switch is electrically connected to the second output busbar, and the second output busbar is electrically connected to the power access end of the second batch of IT equipment in the computing center computer room through a cable; The high-voltage input end of the second split-winding transformer is electrically connected to the second mains terminal, the first low-voltage output end of the second split-winding transformer is electrically connected to the third input busbar, the third input busbar is electrically connected to one end of the third input switch, the other end of the third input switch is electrically connected to the input end of the third uninterruptible power supply module, the output end of the third uninterruptible power supply module is electrically connected to one end of the third output switch, the other end of the third output switch is electrically connected to the third output busbar, and the third output busbar is electrically connected to the power access end of the first batch of IT equipment in the computing center computer room through cables; The high-voltage input end of the second split-winding transformer is electrically connected to the second mains terminal, the second low-voltage output end of the second split-winding transformer is electrically connected to the fourth input busbar, the fourth input busbar is electrically connected to one end of the fourth input switch, the other end of the fourth input switch is electrically connected to the input end of the fourth uninterruptible power supply module, the output end of the fourth uninterruptible power supply module is electrically connected to one end of the fourth output switch, the other end of the fourth output switch is electrically connected to the fourth output busbar, and the fourth output busbar is electrically connected to the power access end of the second batch of IT equipment in the computing center computer room through a cable; The first uninterruptible power supply module and the third uninterruptible power supply module jointly supply power to a first batch of multiple IT devices, and the second uninterruptible power supply module and the fourth uninterruptible power supply module jointly supply power to a second batch of multiple IT devices.

2. The IT equipment power supply and distribution electrical architecture according to claim 1, characterized in that: It also includes a first low-voltage power distribution control cabinet and a second low-voltage power distribution control cabinet, wherein the first input busbar, the second input busbar, the first input switch, the first output switch, the second input switch, the second output switch, the first output busbar, and the second output busbar are fixedly arranged in the first low-voltage power distribution control cabinet, and the third input busbar, the fourth input busbar, the third input switch, the third output switch, the fourth input switch, the fourth output switch, the third output busbar, and the fourth output busbar are fixedly arranged in the second low-voltage power distribution control cabinet.

3. The IT equipment power supply and distribution electrical architecture according to claim 2, characterized in that: It also includes a first maintenance switch, a second maintenance switch, a third maintenance switch, and a fourth maintenance switch. The two ends of the first maintenance switch are electrically connected to the first input busbar and the first output busbar, respectively. The two ends of the second maintenance switch are electrically connected to the second input busbar and the second output busbar, respectively. The two ends of the third maintenance switch are electrically connected to the third input busbar and the third output busbar, respectively. The two ends of the fourth maintenance switch are electrically connected to the fourth input busbar and the fourth output busbar, respectively. The first maintenance switch and the second maintenance switch are fixedly arranged in the first low-voltage power distribution control cabinet, and the third maintenance switch and the fourth maintenance switch are fixedly arranged in the second low-voltage power distribution control cabinet.

4. The IT equipment power supply and distribution electrical architecture according to claim 3, characterized in that: It also includes a first high-voltage power distribution control cabinet and a second high-voltage power distribution control cabinet. The first high-voltage power distribution control cabinet and the second high-voltage power distribution control cabinet both have a power input switch circuit, a safety switch circuit, a diesel power supply switch circuit, a power output switch circuit, a reserved switch circuit, and a high-voltage bus-tie switch circuit. The input end of the power input switch circuit is electrically connected to the first mains power end and the second mains power end, the output end of the diesel power supply switch circuit is electrically connected to an external diesel generator, and the output end of the power output switch circuit is electrically connected to the high-voltage input end of the first split-winding transformer and the second split-winding transformer.

5. The IT equipment power supply and distribution electrical architecture according to claim 4, characterized in that: It also includes a high-voltage interconnected busbar, both ends of which are electrically connected to the output ends of the high-voltage bus-tie switch circuits in the first high-voltage power distribution control cabinet and the second high-voltage power distribution control cabinet, respectively.

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