A full link dc power supply network and method

Abstract

The application discloses a full-link direct-current power supply network and method, relates to the technical field of full-link direct-current power supply network and method, and the power supply network comprises a first direct-current link, a first direct-current conversion module and a second direct-current conversion module. The first direct-current link comprises a first high-frequency substation and a first direct-current distribution cabinet. Since the full-link direct-current power supply reduces conversion links such as rectification, inversion and isolation, the number of power conversion stages is reduced, the power supply network energy efficiency is improved, the power supply reliability is improved, the number of devices is reduced, the device power density is improved, the space proportion of power supply equipment in a data center is reduced, and the overall computing power density of the AIDC is improved. Meanwhile, the first battery backup module compensates for voltage gaps and maintains the fluctuation of the bus voltage within the allowable range.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power supply, in particular to a full-link DC power supply network and method. BACKGROUND

[0002] With the AI era of computing power, the scale of infrastructure carrying computing power is increasing day by day, and the power supply of artificial intelligence data center (AIDC) has become the core bottleneck of computing power development, which needs to upgrade the technology, transform the energy structure, and improve the efficiency, density, and reliability of the full-link power supply system through three parallel tracks; the current full-link power supply system of the data center is composed of a power grid, a power frequency substation, a backup power supply, and a data center room power supply link. The power transmission to the power consumption unit is all AC transmission, accompanied by multiple AC-DC and DC-AC conversion links, which not only increases the number of power conversion stages and reduces the overall power supply efficiency, but also causes the power equipment to be bulky and heavy, and the power supply system density to be reduced, which is contrary to the demand of AIDC for high-density and high-efficiency power supply system. SUMMARY

[0003] The present application provides a full-link DC power supply network and method to at least solve the problem of how to improve the power supply efficiency of AIDC power supply system in related technologies.

[0004] The present application provides a full-link DC power supply network, comprising: a first DC link, a first DC conversion module and a second DC conversion module, the first DC link comprising a first high-frequency substation, a first battery backup module and a first DC distribution cabinet, wherein the input end of the first high-frequency substation is connected to the first DC power supply through a first extra-high voltage DC bus, and the output end of the first high-frequency substation is connected to the input end of the first DC distribution cabinet through a first high-voltage DC bus; the first battery backup module is connected to the first high-voltage DC bus; the output end of the first DC distribution cabinet is connected to the input end of the first DC conversion module through a second high-voltage DC bus; the output end of the first DC conversion module is connected to the input end of the second DC conversion module through a low-voltage DC bus; and the output end of the second DC conversion module is connected to at least one power consumption unit.

[0005] The present application provides a full-link DC power supply method based on the above full-link DC power supply network, the power supply method comprising: controlling the static switch to be closed; selecting the first DC power supply or the second DC power supply as the main power supply by setting the output voltage level of the first high-frequency substation and the second high-frequency substation, and the other DC power supply as the backup power supply; determining whether the DC power supply and the high-frequency substation of the link where the main power supply is located are normal; and if the DC power supply and the high-frequency substation of the link where the main power supply is located are normal, supplying power by the main power supply.

[0006] The present application also provides an electronic device, comprising: a memory for storing a computer program; and a processor for implementing the steps of any of the above-mentioned full-link DC power supply methods when executing the computer program.

[0007] The present application also provides a computer-readable storage medium, in which a computer program is stored, wherein when the computer program is executed by a processor, the steps of any of the above-mentioned full-link DC power supply methods are implemented.

[0008] The present application also provides a computer program product, including a computer program, which implements the steps of any of the above-mentioned full-link DC power supply methods when executed by a processor.

[0009] This application improves the energy efficiency of the full-link power supply network by reducing the number of transformation steps, such as rectification, inversion, and isolation, and thus the number of power conversion stages. This improves power supply reliability, reduces the number of devices, and increases device power density, thereby reducing the space occupied by power supply equipment in the data center and improving the overall computing power density of the AIDC. At the same time, the first battery backup module compensates for voltage gaps and maintains bus voltage fluctuations within an allowable range. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0011] Figure 1 Power supply network for AIDC of related technologies;

[0012] Figure 2 A diagram showing the composition of a full-link DC power supply network provided in an embodiment of the present application;

[0013] Figure 3 A diagram showing the composition of another full-link DC power supply network provided in an embodiment of the present application;

[0014] Figure 4 A diagram showing the composition of another full-link DC power supply network provided in an embodiment of the present application;

[0015] Figure 5 A diagram showing the composition of a second DC link provided in an embodiment of the present application;

[0016] Figure 6 A diagram showing the composition of another full-link DC power supply network provided in an embodiment of the present application;

[0017] Figure 7A diagram showing the composition of another full-link DC power supply network provided in an embodiment of the present application;

[0018] Figure 8 A diagram showing the composition of the first DC conversion module and the second DC conversion module provided in an embodiment of the present application;

[0019] Figure 9 A diagram showing the composition of a first DC conversion module provided in an embodiment of the present application;

[0020] Figure 10 A diagram showing the composition of another full-link DC power supply network provided in an embodiment of the present application;

[0021] Figure 11 Flowchart of the full-link DC power supply method provided in an embodiment of the present application;

[0022] Figure 12 A diagram showing the composition of an electronic device according to an embodiment of the present application. DETAILED DESCRIPTION

[0023] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0024] It should be noted that, in the description of this application, the terms "comprises," "includes," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. The terms "first," "second," etc., in this application are used to distinguish similar objects, and are not used to describe a particular order or sequence.

[0025] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0026] The existing technology is the most mature power supply network and power supply method of AIDC, such as Figure 1 The figure shows a schematic diagram of the existing AIDC full-link power supply system. It consists of a utility grid, a power frequency substation, a disaster recovery power supply, and a data center room power supply link. The data center room power supply link consists of an uninterruptible power supply (UPS), an AC distribution cabinet, a rectifier unit, and a power consumption unit.

[0027] based on Figure 1As shown in the topology, the current AIDC power supply system adopts a chain architecture of "mains → power frequency substation → UPS → AC power distribution → rectifier → IT equipment", which has the following fundamental flaws:

[0028] Redundancy in power conversion levels: Power from the grid to IT equipment requires five conversion steps (power frequency step-down, UPS rectification, UPS inversion, PDU step-down, and PSU conversion or rectification), resulting in a theoretical efficiency loss of over 25%.

[0029] The contradiction between equipment volume and power density: the power density of traditional 400V UPS systems is only 3-5kW / m 3 , while AIDC requires the power density of the power supply system to be ≥20 kW / m 3 For example, a 10 MW data center needs to be equipped with 250 400 kVA UPS units, covering an area of ​​more than 3,000 m 2 .

[0030] Insufficient green electricity absorption capacity: The existing architecture has poor adaptability to distributed energy sources such as photovoltaics and energy storage. The photovoltaic direct drive efficiency is less than 85%, and it is impossible to achieve multi-energy coordinated scheduling.

[0031] In short, the entire power supply chain uses AC transmission before transmitting power to the power consumption unit. This involves multiple AC-to-DC (ACDC) and DC-to-AC (DCAC) conversion stages. This not only increases the number of energy conversion stages from the power source to the power consumption unit, reducing overall power supply efficiency, but also makes the power equipment used bulky and heavy, reducing the density of the data center power supply system. This is contrary to the high-density and high-efficiency power supply system required by AIDC.

[0032] In this embodiment, a full-link DC power supply network is provided, which is an efficient, stable and integrated DC power transmission and distribution system. Its overall architecture is as follows Figure 2 As shown. Through precise module division and scientific connection mode, the network realizes the full process of DC operation from DC power supply access to power supply of power consumption unit, effectively reducing the energy loss in the traditional AC-DC conversion process. The full link DC power supply network includes: a first DC link, a first DC conversion module 03 and a second DC conversion module 04, as shown. Figure 2 As shown, the first DC link includes a first high-frequency substation 01 , a first DC distribution cabinet 02 , and a first battery backup module 06 .

[0033] like Figure 2As shown, the input end of the first high-frequency substation 01 is connected to the first DC power supply 05 through the first ultra-high voltage DC busbar UHVDC1, and the output end of the first high-frequency substation 01 is connected to the input end of the first DC distribution cabinet 02 through the first high-voltage DC busbar HVDC1; the output end of the first DC distribution cabinet 02 is connected to the input end of the first DC conversion module 03 through the second high-voltage DC busbar HVDC2; the output end of the first DC conversion module 03 is connected to the input end of the second DC conversion module 04 through the low-voltage DC busbar LVDC; the output end of the second DC conversion module 04 is connected to at least one power unit.

[0034] Specifically, Figure 2 The First High-Frequency Substation 01, a key node connecting the external DC power source and the internal network, features high-frequency operation, adapting to the rapid transmission and conversion requirements of high-voltage DC power. Its input is connected to the First DC Power Source 05 via the First Ultra-High-Voltage DC Busbar (UHVDC1). This UHVDC1 utilizes specialized, high-voltage, low-impedance cable materials capable of withstanding millions of volts of DC voltage, ensuring safety and stability during high-capacity power transmission. The output of the First High-Frequency Substation 01 is connected to the input of the First DC Distribution Cabinet 02 via the First High-Voltage DC Busbar (HVDC1). The high-voltage DC power processed by the substation is then transmitted to the First DC Distribution Cabinet 02 via the First High-Voltage DC Busbar (at a voltage slightly lower than UHV), completing the initial voltage step-down and transition from UHV to HV.

[0035] Specifically, Figure 2 The first DC distribution cabinet 02 serves as the HVDC power distribution hub. It integrates multiple high-precision DC circuit breakers, lightning protection devices, and voltage monitoring modules, enabling flexible distribution and safe management of incoming HVDC power. Its output is connected to the input of the first DC conversion module 03 via the second HVDC busbar HVDC2. Designed with a focus on transmission efficiency and anti-interference capabilities, the second HVDC busbar HVDC2 stably transmits the HVDC power distributed by the first DC distribution cabinet 02 to subsequent conversion modules. This busbar is also equipped with a real-time current detection device to provide timely feedback on power transmission status.

[0036] Specifically, Figure 2The first DC conversion module 03 primarily performs the conversion from high-voltage DC to low-voltage DC. It utilizes an advanced high-frequency isolated conversion topology, offering wide-range voltage regulation and high energy conversion efficiency. This module's input receives high-voltage DC power from the second high-voltage DC bus HVDC2. Internal power switching devices and control circuitry reduce the voltage to low-voltage DC levels, which are then connected to the input of the second DC conversion module 04 via the low-voltage DC bus LVDC. The low-voltage DC bus LVDC utilizes a multi-core parallel cable design to meet high-current transmission requirements. The busbar is also coated with an insulating shield to effectively reduce the impact of electromagnetic interference on surrounding equipment.

[0037] Specifically, Figure 2 The second DC conversion module 04, as the terminal conversion device closest to the power consumer, features more refined voltage regulation and current control, enabling customized DC power supply tailored to the needs of different power consumers. Its input receives power from the low-voltage DC bus (LVDC), further adjusts voltage and current parameters through internal DC-DC circuitry, and ultimately connects to at least one power consumer through its output. This module's multi-port design ensures precise power supply for both a single high-power consumer (such as an industrial DC motor) and multiple low-power consumers (such as distributed sensors and communications equipment). Each output port features independent overload and short-circuit protection, ensuring safe and stable operation of each power consumer.

[0038] like Figure 2 As shown, the first battery backup module 06 is connected to the first high-voltage direct current bus HVDC1.

[0039] Specifically, during normal operation, the first battery backup module 06 receives power from the first high-frequency substation 01 via the first high-voltage DC bus HVDC1. The battery management system automatically performs float charging or equalization charging based on the bus voltage and its own SOC status, maintaining the module in a fully or nearly fully charged standby state at all times to ensure rapid energy release in the event of an emergency. If the output voltage of the first high-frequency substation 01 suddenly drops due to equipment failure, energy input interruption, or other reasons, or if the voltage of the first high-voltage DC bus HVDC1 drops due to abnormal conditions such as a line short circuit or overload, the first battery backup module 06 quickly switches to discharge mode and transmits high-voltage DC power to the first DC distribution cabinet 02 via the first high-voltage DC bus HVDC1, thereby bridging the voltage gap and maintaining bus voltage fluctuations within an allowable range. This allows time for troubleshooting and recovery of the first high-frequency substation 01, or provides transitional energy support for the first DC distribution cabinet 02 to continue powering subsequent links.

[0040] The power supply network of this embodiment achieves full-link DC transmission from ultra-high voltage to low voltage DC through the orderly connection of the first high-frequency substation 01, the first DC distribution cabinet 02, the two-stage DC conversion module, and DC busbars of different levels. The first high-frequency substation 01, leveraging its high-frequency operating characteristics and the high-voltage design of the first ultra-high voltage DC busbar UHVDC1, reduces losses during ultra-high voltage power access. The hierarchical configuration of the first high-voltage DC busbar HVDC1, the second high-voltage DC busbar HVDC2, and the low-voltage DC busbar LVDC makes the transmission of power between different voltage levels more adaptable to the needs of each link, avoiding the energy waste caused by frequent voltage level conversions in traditional AC networks and improving overall power transmission efficiency.

[0041] In some optional embodiments, such as Figure 3 As shown, the first DC power supply 05 includes: a first DC grid 051, an energy storage 052 and a DC new energy grid 053, wherein the first DC grid 051, the energy storage 052 and the DC new energy grid 053 are interconnected in pairs; the DC new energy grid 053 is connected to the input end of the first high-frequency substation 01 through the first ultra-high voltage DC bus UHVDC1.

[0042] Specifically, Figure 3 The DC New Energy Grid 053 is the core hub for clean energy access and UHVDC transmission within the full-link DC power supply network. Its core feature is its use of UHVDC technology for transmission and distribution, enabling it to meet the demands of large-capacity, long-distance energy transmission. The grid's direct energy sources include, but are not limited to, solar energy (such as electricity generated by large-scale centralized photovoltaic power plants and distributed photovoltaic arrays), wind energy (including electricity processed by DC conversion systems from onshore and offshore wind farms), potential energy (such as DC power generated by high-drop hydropower stations), and nuclear energy (the results of nuclear power generation processed through DC conversion). These energy sources are renewable.

[0043] Specifically, Figure 3In this system, the DC New Energy Grid 053 and Energy Storage 052 form a deep synergy to jointly ensure the stability of UHVDC transmission and distribution. This collaborative operation model enables precise control through an intelligent energy management system. When energy is in a state of sufficient surplus (for example, a surge in photovoltaic power generation during midday or full wind power operation during periods of abundant wind resources), the DC New Energy Grid 053 transmits excess energy exceeding immediate power demand via a dedicated UHVDC interconnection channel to Energy Storage 052. The energy storage equipment within Energy Storage 052 (such as large-capacity lithium-ion battery packs and vanadium liquid flow battery systems) efficiently stores the energy, avoiding energy waste. When energy supply is insufficient (such as when photovoltaic power generation ceases at night or wind power output drops sharply during periods of calm), Energy Storage 052 quickly responds by reversely transmitting previously stored energy to the DC New Energy Grid 053 via the same interconnection channel, promptly compensating for the energy shortfall and ensuring the continuous and stable output of its UHVDC power.

[0044] Specifically, Figure 3 In this system, a comprehensive energy complementary redundancy system is established between the DC new energy grid 053, the first DC grid 051, and the energy storage 052, achieving energy balance in all scenarios through multi-level energy interaction paths. Specifically, when there is surplus energy in the DC new energy grid 053, in addition to being directly stored in the energy storage 052, it can also be directly transmitted to the first DC grid 051 via the UHV DC bus, and then distributed by the first DC grid 051 to other power consumption links. If the first DC grid 051 does not need additional energy temporarily, it can also first store the surplus energy in the energy storage 052, and then indirectly transmit it to the first DC grid 051 for consumption when the first DC grid 051 needs it. This flexible energy scheduling method maximizes energy utilization. Conversely, when DC New Energy Grid 053 experiences a power shortage, Energy Storage 052 prioritizes releasing stored energy to replenish it. If Energy Storage 052 runs low, First DC Grid 051 will directly transmit power to DC New Energy Grid 053 via the UHVDC interconnection line, or first transmit the energy to Energy Storage 052, which will then dispatch it to DC New Energy Grid 053. This demonstrates that DC New Energy Grid 053, First DC Grid 051, and Energy Storage 052 form a tightly coupled, complementary backup relationship. If any link experiences energy fluctuations or failures, the other two can quickly fill in, significantly enhancing the overall power supply system's resilience to risk.

[0045] In some optional implementations, the full-link DC power supply network further includes: a second DC link. The addition of the second DC link is a key design to improve system reliability and flexibility. Its overall architecture is as follows: Figure 4As shown, the second DC link includes: a second high-frequency substation 07 and a second DC distribution cabinet 08, wherein the input end of the second high-frequency substation 07 is connected to the second DC power supply 09 through the second ultra-high voltage DC bus UHVDC2, and the output end of the second high-frequency substation 07 is connected to the input end of the second DC distribution cabinet 08 through the third high-voltage DC bus HVDC3; the output end of the second DC distribution cabinet 08 is connected to the input end of the first DC conversion module 03 through the fourth high-voltage DC bus HVDC4.

[0046] Specifically, Figure 4 The second high-frequency substation 07 serves as the energy entry point for the second DC link. Its input is electrically connected to the second DC power source via the second UHVDC busbar UHVDC2. This busbar can stably transmit millions of volts of DC power in extreme environments (such as high temperature, high humidity, and areas of strong electromagnetic interference), ensuring lossless access to the link for high-capacity energy from second DC power sources (such as large-scale wind-solar hybrid power plants and backup DC grids). The second high-frequency substation 07 converts the incoming UHVDC power into HVDC power that meets the input requirements of the second DC distribution cabinet 08. This power is then transmitted to the input of the second DC distribution cabinet 08 via the third high-voltage DC busbar HVDC3.

[0047] Specifically, Figure 4 In this system, the second DC link and the first DC link converge through the input of the first DC conversion module 03, forming a "dual-source complementary" power supply model. During daily operation, the two links dynamically adjust their output power based on the real-time load demand of the first DC conversion module 03. When the load is low, the central control system can control one of the links to enter standby mode, reducing system energy consumption. During peak load, both links operate simultaneously at full capacity, powered by the second high-voltage DC bus HVDC2 (from the first DC link) and the fourth high-voltage DC bus HVDC4 (from the second DC link) in parallel. If the first DC link is deactivated due to equipment maintenance, line failure, or other reasons, the second DC link can quickly take over power supply via the third high-voltage DC bus HVDC3, the second DC distribution cabinet 08, and the fourth high-voltage DC bus HVDC4, ensuring continuous operation of downstream power users.

[0048] In some optional embodiments, the substation is a high-frequency substation, and the input ultra-high voltage direct current is transformed into high-voltage direct current through a high-frequency transformer (such as SST). The voltage form of this high-voltage direct current includes but is not limited to 240Vdc, 336Vdc, 380Vdc, 400Vdc, 750Vdc, 800Vdc, ±240Vdc, ±336Vdc, ±400Vdc, ±800Vdc, +400Vdc to -800Vdc and other standard forms, and its essential characteristic is direct current.

[0049] The power distribution cabinet is a DC power distribution cabinet, with both input and output powered by high-voltage DC power. The lack of an internal isolation transformer contributes to a streamlined power supply network, increasing the density of the distribution cabinets and reducing their cost. The DC power distribution cabinet also features energy metering and circuit breaker protection.

[0050] In some optional implementations, the second DC power supply includes: a second DC power grid.

[0051] Specifically, the second DC power supply, serving as the energy source for the second DC link, is comprised of the second DC grid, a comprehensive, independently operated DC power system that provides stable high-voltage DC power. Designed specifically for collaboration with the second DC link, it continuously delivers compliant UHVDC power to the second high-frequency substation 07 via the second UHVDC busbar (UHVDC2).

[0052] Specifically, the second DC grid offers a high degree of flexibility and compatibility. It can not only serve as an independent power source for the second DC link, but can also interconnect with other DC power systems (such as the first DC grid 051 within the first DC power source 05), enabling bidirectional energy flow under specific circumstances. For example, when the second DC grid's generation capacity exceeds the needs of the second DC link, the excess power can be transmitted to the first DC grid 051 via interconnected lines to supplement its supply. Conversely, when the second DC grid's generation capacity is insufficient, it can also receive power from the first DC grid 051, ensuring continuous power supply to the second DC link.

[0053] In some optional embodiments, such as Figure 5 As shown, the second DC link further includes: a reserve-integrated microgrid 10 , wherein the reserve-integrated microgrid 10 is connected to the third high-voltage DC bus HVDC3 .

[0054] Specifically, the second DC link, building on the existing second high-frequency substation 07 and second DC distribution cabinet 08, innovatively incorporates a reserve-integrated microgrid 10. This module empowers the link with the dual capabilities of flexible distributed energy resource scheduling and emergency power supply, further improving the second DC link's energy security system. The reserve-integrated microgrid 10 is connected to the third high-voltage DC bus HVDC3, enabling bidirectional energy flow between the microgrid and the bus. This allows the microgrid to draw energy from the third high-voltage DC bus HVDC3 for storage and, in specific scenarios, release energy to the bus, creating a dynamic energy interaction with the main link.

[0055] Optionally, when the second high-frequency substation 07 suddenly shuts down due to a fault or the second ultra-high voltage DC bus UHVDC2 experiences a power outage, the voltage of the third high-voltage DC bus HVDC3 will drop rapidly. At this time, the integrated reserve microgrid 10 immediately starts the emergency power supply mode: the integrated reserve microgrid 10 quickly releases energy, and after boosting, injects it into the third high-voltage DC bus HVDC3 to make up for the energy gap caused by the interruption of the main power supply, and continuously supplies power to the second DC distribution cabinet 08 until the power supply returns to normal or other backup power supplies are started. This process can ensure that the second DC link does not interrupt power supply in a short time, thereby gaining critical time for fault investigation and recovery.

[0056] In some optional embodiments, such as Figure 5 As shown, the integrated storage microgrid 10 includes: a self-built new energy system 101 and a second battery backup module 102, wherein the self-built new energy system 101 and the second battery backup module 102 are both connected to the third high-voltage direct current bus HVDC3.

[0057] Specifically, the second battery backup module 102, serving as a dedicated energy storage and emergency power supply unit for the integrated microgrid 10, employs a high-safety energy storage technology solution to provide stable energy buffering and emergency support for the third high-voltage DC bus HVDC3. When the self-built new energy system 101 generates insufficient power or the voltage of the third high-voltage DC bus HVDC3 falls below a threshold, the second battery backup module 102 immediately switches to discharge mode, releasing energy to the bus via a bidirectional DC converter. If a fault occurs in the second high-frequency substation 07 or the second UHVDC bus, causing a bus power outage, the second battery backup module 102 initiates an emergency discharge sequence, injecting energy into the bus, providing uninterrupted power to the second DC distribution cabinet 08 until the primary power source is restored or a higher-level backup power source is activated.

[0058] In some optional embodiments, such as Figure 6 As shown, the full-link DC power supply network also includes: a static switch STS, wherein the first end of the static switch STS is connected to the output end of the first high-frequency substation 01 through the first high-voltage DC bus HVDC1, and the second end of the static switch STS is connected to the output end of the second high-frequency substation 07 through the third high-voltage DC bus.

[0059] Specifically, the static switch STS added to the full-link DC power supply network is the core switching device for realizing the coordinated scheduling of high-voltage power energy in the first DC link and the second DC link. Through precise electrical connection and fast switching response, it provides a flexible convergence and backup channel for the high-voltage DC power of the two links, further improving the power supply reliability and operating efficiency of the system.

[0060] Optionally, when the voltage of the first high-voltage DC bus HVDC1 drops or is interrupted due to a fault in the first high-frequency substation 01, a line abnormality, or other reasons, the static switch STS closes, allowing the high-voltage DC power on the third high-voltage DC bus HVDC3 to be connected to the downstream link of the first high-voltage DC bus HVDC1 through the static switch STS, continuously powering equipment such as the first DC distribution cabinet 02. Conversely, when a power supply abnormality occurs on the third high-voltage DC bus HVDC3, the static switch STS switches the power from the first high-voltage DC bus HVDC1 to the downstream link of the third high-voltage DC bus HVDC3 at the same speed, ensuring the normal operation of the second DC distribution cabinet 08.

[0061] Optionally, the static switch STS also features bidirectional power converging. During peak hours, when both the first and second high-frequency substations 07 are operating at full capacity, the static switch STS conducts, allowing the high-voltage DC power from the first HVDC busbar HVDC1 and the third HVDC busbar HVDC3 to converge through the static switch STS, jointly supplying power to downstream devices on both links. The combined power capacity now equals the sum of the outputs from both links, rapidly increasing the system's power supply capacity to meet large-scale power demands.

[0062] In some optional embodiments, such as Figure 7 As shown, the full-link DC power supply network further includes: a disaster recovery power supply 11, wherein the disaster recovery power supply 11 is connected to the first high-voltage DC bus HVDC1 and / or the third high-voltage DC bus HVDC3.

[0063] Specifically, the first DC link is equipped with a disaster recovery power supply 11. Once the first DC grid 051 fails to supply power due to power supply anomalies or failures, the disaster recovery power supply 11 is started to provide hourly power supply energy for the entire power supply system, and the computing power side is warned to reduce the storage of data to ensure data security.

[0064] Specifically, the second DC link is equipped with a disaster recovery power supply 11. If the second high-frequency substation 07 is abnormal and cannot maintain power supply, the integrated microgrid is started, and the disaster recovery power supply 11 is started at the same time to provide hourly power supply energy for the overall power supply system, and the early warning computing power is reduced to save data to ensure data security.

[0065] Optionally, the disaster recovery power supply 11 has a DC output that conforms to the high-frequency substation output standard, which is the input standard for the data center computer room. Disaster recovery power supply 11 is preferably a clean energy generator. In the event of a catastrophic power outage, it can provide hour-by-hour uninterrupted power to the data center computer room, ensuring the normal operation of the data center's IT equipment.

[0066] In some optional embodiments, the output voltages of the first high-frequency substation 01 and the second high-frequency substation 07 are both higher than the output voltage of the disaster recovery power supply 11; the output voltage of the disaster recovery power supply 11 is higher than the output voltage of the first battery backup module 06 and the second battery backup module 102.

[0067] Specifically, the high-frequency substation output is the main power supply for the entire power supply link. To ensure that the emergency power supply system and backup power system can be seamlessly connected, when the main power supply is normal, the disaster recovery power supply 11 and the battery backup module do not supply power to the busbar. Ensure that the main power supply has the first priority. The disaster recovery power supply 11 is an emergency backup power supply under long-term main power supply failure. It starts slowly and is short-term backed up by the battery backup module during the startup time. After the disaster recovery is started, its transmission voltage is higher than the battery backup module, and it works seamlessly with the battery backup module. The battery backup module stops outputting, and the disaster recovery power supply 11 is now used for power supply.

[0068] In some optional embodiments, such as Figure 8 As shown, the first DC conversion module 03 includes: at least one first DC-DC circuit 031, wherein the input end of each first DC-DC circuit 031 is connected to a point and then leads to the input end of the first DC conversion module 03; the output end of each first DC-DC circuit 031 is connected to a point and then leads to the output end of the first DC conversion module 03.

[0069] Specifically, the input terminals of each first DC-DC circuit 031 are connected to the same point within the module, forming a centralized input node, which is then used as the input terminal for the entire first DC conversion module 03. This "parallel input" design has significant advantages: on the one hand, after the input terminals of multiple first DC-DC circuits 031 are connected in parallel, they can jointly share the high-voltage DC input current from the second high-voltage DC bus HVDC2, preventing a single circuit from experiencing accelerated component loss due to excessive current, thereby extending the circuit's service life; on the other hand, if a fault occurs at the input terminal of one of the first DC-DC circuits 031 (such as poor contact or component damage), the other circuits can still receive power normally through the shared input terminal node, ensuring that the entire module will not fail completely due to input problems in a single circuit, thereby improving the module's fault resistance.

[0070] Specifically, the output terminals of each first DC-DC circuit 031 are also connected to a single point within the module, forming a centralized output node, which then leads to the output terminal of the first DC conversion module 03. This "parallel output" structure, which mirrors the input terminal design, aggregates the low-voltage DC power converted by multiple first DC-DC circuits 031 and outputs it to the low-voltage DC bus LVDC. Its core functions are reflected in two aspects: First, by connecting multiple circuits in parallel, the output power of each circuit can be added, allowing the first DC conversion module 03 to adapt to a wider range of load requirements. For example, when the load of a power-consuming unit increases, the total output power of the module can be increased by adding first DC-DC circuits 031, without requiring large-scale modifications to individual circuits, thereby enhancing the module's power expansion flexibility. Second, after the output terminals of multiple circuits are connected in parallel, current sharing control techniques (such as peak current control and average current control) can be used to maintain a balanced output current among each circuit, avoiding overheating and other problems caused by excessive output current from a single circuit. This also ensures a stable voltage output to the low-voltage DC bus LVDC, reducing the impact of voltage fluctuations on the subsequent second DC conversion module 04.

[0071] Optionally, each first DC-DC circuit 031 serves as an independent DC conversion unit, internally adopting a high-frequency isolated topology structure (such as a full-bridge phase-shift topology, LLC resonant topology, etc.), and has efficient voltage conversion capability.

[0072] In some optional embodiments, such as Figure 9 As shown, the first DC conversion module 03 further includes an automatic transfer switch ATS, wherein the input end of each first DC-DC circuit 031 is connected to the second high-voltage DC bus HVDC2 and the fourth high-voltage DC bus HVDC4 through the automatic transfer switch ATS.

[0073] Specifically, the input end of each first DC-DC circuit 031 is connected to the second high-voltage DC bus HVDC2 and the fourth high-voltage DC bus HVDC4 through the automatic transfer switch ATS, thereby reducing the single-unit redundancy of the first DC conversion module 03.

[0074] In some optional embodiments, such as Figure 8 As shown, the second DC conversion module 04 includes: at least one DC-DC conversion unit 041, wherein the input end of each DC-DC conversion unit 041 is connected to the output end of the first DC conversion module 03 through a low-voltage DC bus LVDC; the output end of each DC-DC conversion unit 041 is connected to an electric unit.

[0075] In some optional embodiments, such as Figure 8As shown, the DC-DC conversion unit 041 includes: at least one second DC-DC circuit 0411, wherein the input end of each second DC-DC circuit 0411 is connected to a point and then leads to the input end of the DC-DC conversion unit 041; the output end of each second DC-DC circuit 0411 is connected to a point and then leads to the output end of the DC-DC conversion unit 041.

[0076] Specifically, the DC-DC conversion unit 041 is provided with multiple second DC-DC circuits 0411 , which are configured as a self-redundant power supply system to form multiple low-voltage bus voltages within the communication equipment, thereby improving system reliability.

[0077] In some optional embodiments, such as Figure 8 As shown, the full-link DC power supply network further includes: an overcapacity unit 12, wherein the overcapacity unit 12 is connected to the low-voltage DC bus LVDC.

[0078] Specifically, the input and output of the supercapacitor 12 are both DC, directly connected to the low-voltage DC bus LVDC output of the first DC conversion module 03. The output voltage of the supercapacitor 12 is slightly lower than or equal to the voltage of the low-voltage DC bus LVDC (i.e., the input voltage of the supercapacitor 12). Through the management system and the current balancing method of the first DC conversion module 03, the supercapacitor 12 can achieve current compensation under high peak loads on the power consumption unit side and energy self-compensation under light loads, achieving optimal energy efficiency of the power supply system at all times. Furthermore, in the event of a power supply link system failure, power supply anomaly, or power outage, the supercapacitor 12 provides uninterrupted power supply to the power consumption unit in seconds, ensuring the data security of IT equipment in the data center computer room.

[0079] For example, the passive current sharing mode of the first DC-DC circuit 031 is used as an example to illustrate the cooperation mode between the super-capacitor unit 12 and the first DC conversion module 03:

[0080] The management system controls the first DC conversion module 03 to activate the number of first DC-DC circuits 031 in standby mode based on the LVDC side load status, thereby ensuring that the first DC conversion module 03 always operates in a highly energy-efficient state. The supercapacitor unit 12 is directly connected to the LVDC bus. When a large instantaneous load peak current occurs, the output voltage of the supercapacitor unit 12 is fine-tuned to be slightly higher than that of the first DC conversion module 03, or remains unchanged. Because the number of activated first DC-DC circuits 031 is limited, the first DC conversion module 03 is unable to increase the number of first DC-DC circuits 031 in time when a large instantaneous peak current occurs. As a result, the limited number of first DC-DC circuits 031 are instantly fully loaded, switching from CV mode to CC-CP mode. The output voltage begins to decrease, and the peak current energy is then provided by the supercapacitor unit 12. When the first DC conversion module 03 is in a lightly loaded state, if the supercapacitor unit 12 detects that it needs charging, the control system controls the first DC conversion module 03 to charge the supercapacitor unit 12.

[0081] In a special case, that is, when the overcapacity unit 12 is unable to meet the peak current supply capacity for the next time after continuous discharge, the management system will also force the overcapacity unit 12 to be charged when the opportunity arises, and dynamically coordinate to increase the number of first DC-DC circuits 031 put into use to ensure that the first DC conversion module 03 is always in a high-efficiency state.

[0082] Optionally, the management system also obtains current, voltage, power, temperature and other information through the power consumption unit and the second DC-DC circuit 0411 to serve as a basis for determining the control operation of the first DC conversion module 03 and the super-capacity unit 12.

[0083] In some optional implementations, the specific topology of the full-link DC power supply network is as follows: Figure 10 As shown in the figure, from the perspective of the power supply source, the overall power supply chain adopts a dual-link architecture: a first DC link (Link A) and a second DC link (Link B). This full-link DC power supply network architecture is decomposed into two components: the transmission, power supply, backup, and distribution network, and the communication equipment. The core feature of this power supply chain is that all links are connected via DC, forming a full-link DC power supply network. From the source to the load unit, DC is used for power transmission, eliminating AC-DC, DC-AC, and AC-AC links, and comprehensively improving the energy efficiency of the entire link. Through direct access from the new energy grid, a self-built integrated microgrid with integrated storage, and an ATS-type DC conversion unit or SCU, high redundancy and reliability are achieved throughout the entire link, while also improving overall power supply efficiency and reducing dependence on the public grid. This optimized architecture reduces the power system requirements of the load units on the power consumption side, thereby reducing the space occupied by the power supply system equipment and increasing the overall computing power density of the data center.

[0084] The embodiment of the present application provides a full-link DC power supply method, such as Figure 11 As shown in the figure, the full-link DC power supply method includes:

[0085] Step S1: Control the static switch STS to be disconnected.

[0086] Specifically, disconnecting the static switch STS is usually applicable to the following scenarios: First, the system is in the single-link debugging or maintenance stage, and the first and second DC links need to be physically isolated to prevent the debugging operation from affecting the normal operation of the non-maintenance link; second, there is a persistent fault in one of the links (such as busbar insulation damage or the high-frequency substation cannot be repaired). Disconnecting the static switch STS can prevent the faulty link from causing voltage shock or energy backflow to the normal link; third, the load of the entire link is at an extremely low level, and only a single link is needed to meet the power supply demand. Disconnecting the static switch STS can reduce the reactive power loss when the two links operate in parallel.

[0087] Specifically, after the static switch STS is disconnected, the first and second DC links each form an independent high-voltage DC circuit, and their operating states do not affect each other. The power of the first high-voltage DC busbar HVDC1 is transmitted only within the first DC link, and the power of the third high-voltage DC busbar HVDC3 also flows only within the second DC link. This isolation mode provides clear boundary conditions for the independent operation and fault handling of the subsequent primary and backup power supplies.

[0088] Step S2: By setting the output voltage levels of the first high frequency substation 01 and the second high frequency substation 07, the first DC power supply 05 or the second DC power supply is selected as the main power supply, and the other DC power supply is selected as the backup power supply.

[0089] Specifically, if the first DC power supply 05 is selected as the main power supply, the output voltage of the first high-frequency substation 01 needs to be set to the rated value that adapts to the first DC link load, and the output voltage of the second high-frequency substation 07 is set to a slightly lower standby value. At this time, the first DC link assumes the main power supply task, and the second DC link only maintains the basic standby load; if the second DC power supply is selected as the main power supply, the opposite is true.

[0090] For example, based on Figure 10 Under normal circumstances, the bus voltage of line A is higher or slightly higher than the bus voltage of line B, that is, VHVDC1>VHVDC2, to ensure that line A is the main power supply and line B is the backup power supply; when the entire power supply system requires A and B to supply power at the same time, VHVDC1=VHVDC2; when the integrated reserve microgrid 10 requests discharge, VHVDC1<VHVDC2.

[0091] Step S3: Determine whether the DC power supply and the high-frequency substation in the link where the main power supply is located are normal.

[0092] Optionally, in terms of judgment content, in addition to conventional parameters such as voltage, current, and temperature, additional attention should be paid to unique indicators in the link isolation state: for the main power supply, it is necessary to monitor its energy balance capability during independent operation (such as the matching degree between renewable energy power generation and load demand, and whether the charging and discharging rate of energy storage 052 is normal); for high-frequency substations, it is necessary to detect the status of its redundant modules during single-link operation (such as whether the backup cooling fan and power module are in ready state).

[0093] Step S4: If the DC power supply and the high-frequency substation in the link where the main power supply is located are both normal, power is supplied by the main power supply.

[0094] Specifically, along the energy transmission path, the UHVDC power output by the main power supply is converted into HVDC power by the corresponding high-frequency substation. This power is then transmitted to the DC distribution cabinet via the link's HVDC bus (the first HVDC bus, HVDC1, or the third HVDC bus, HVDC3). After distribution, it is delivered via the HVDC bus (the second HVDC bus, HVDC2, or the fourth HVDC bus, HVDC4) to the first DC conversion module 03, where it is converted into low-voltage DC power and supplied to the power consumption units. Because the static switch (STS) is disconnected, there is no cross-link energy interaction during the entire transmission process, ensuring a clear and controllable energy flow path.

[0095] When power is supplied from Line A, the DC new energy grid 053 transmits ultra-high voltage DC to the first high-frequency substation 01. The high-frequency solid-state transformer within the substation transforms the output high-voltage DC power and sends it to the AIDC intelligent computing data center. The first battery backup module 06 within the AIDC is connected to the data center's first high-voltage DC busbar HVDC1, providing minute-level backup power for this power supply. The high-voltage DC power is then transmitted to the first DC conversion module 03 via the first DC distribution cabinet 02.

[0096] When the power supply of line B is the main power supply, the second DC grid transmits the ultra-high voltage DC to the second high-frequency substation 07, which is transformed by the high-frequency solid-state transformer inside it and outputs the high-voltage DC into the AIDC intelligent computing data center.

[0097] Optionally, based on Figure 10 The preferred power supply method for routes A and B is to use route A as the primary route and route B as the secondary route. Normally, only route A supplies power to the system, with route B switching in only when the integrated microgrid 10 with reserve can provide a permitted long-term power supply (generally, when the integrated microgrid's energy storage is full and self-built new energy is sustainable, the microgrid's stored energy is released). During this period, route A generally serves as a backup for route B. When the integrated microgrid 10's energy storage is insufficient, route A switches back to the primary route, with route B serving as the secondary route. In the event of an abnormality or failure in route A, the power supply system switches to route B. Routes A and B provide redundant backup for each other.

[0098] In some optional implementations, the full-link DC power supply method further includes:

[0099] (1) If the DC power supply and / or high-frequency substation in the link where the main power supply is located fails, determine whether the DC power supply and high-frequency substation in the link where the backup power supply is located are normal.

[0100] Specifically, if the result of step S3 indicates a fault in the primary power supply link (including a DC power failure, a high-frequency substation failure, or both), the system immediately triggers the backup power supply status determination process, a critical transition step to ensure uninterrupted power supply. Because the static switch (STS) is disconnected, the primary and backup links are isolated from each other. Therefore, the core equipment of the backup link must be fully tested independently to ensure its ability to take over power supply tasks.

[0101] (2) If the DC power supply and high-frequency substation in the link where the backup power supply is located are normal, the backup power supply will be used for power supply.

[0102] Specifically, when the DC power supply and high-frequency substation in the link where the backup power supply is located are judged to be in normal condition, the system starts the backup power supply switching program, and the backup power supply officially takes over the power supply task of the entire link. This process must be completed in the shortest time to minimize the impact of power interruption on power-consuming units.

[0103] The UHVDC power output by the backup DC power supply is converted into HVDC power by the backup high-frequency substation. This power is then transmitted to the backup DC distribution cabinet via the third HVDC busbar HVDC3 (or the first HVDC busbar HVDC1). After distribution, it is delivered to the first DC conversion module 03 via the fourth HVDC busbar HVDC4 (or the second HVDC busbar HVDC2). At this point, the automatic transfer switch (ATS) in the first DC conversion module 03 plays a key role, rapidly switching the input from the HVDC busbar of the primary link to the HVDC busbar of the backup link, ensuring uninterrupted power supply to the low-voltage DC busbar LVDC.

[0104] In some optional implementations, the full-link DC power supply method further includes:

[0105] (1) Determine in real time that the energy of the integrated storage microgrid 10 is higher than a first preset threshold.

[0106] Specifically, real-time judgment of whether the energy of the integrated storage microgrid 10 is higher than the first preset threshold is the basis for the system to dynamically dispatch distributed energy. This process is completed through the collaboration of the full-link central control system and the intelligent energy management module inside the integrated storage microgrid 10, realizing accurate perception and real-time feedback of the energy status of the microgrid.

[0107] (2) If the energy of the integrated storage microgrid 10 is higher than the first preset threshold, the current power supply mode is adjusted to be powered by the integrated storage microgrid 10.

[0108] Specifically, when the real-time judgment result shows that the energy of the integrated reserve microgrid 10 is higher than the first preset threshold, the system will automatically start the power supply mode adjustment program, and switch part or all of the power supply tasks currently undertaken by the main power supply or backup power supply to be undertaken by the integrated reserve microgrid 10, so as to give full play to the value of distributed energy and optimize the energy structure of the entire link.

[0109] Specifically, based on Figure 10 The second battery backup module 102 in the AIDC is connected to the third high-voltage DC bus HVDC3 of the data center, and together with the self-built new energy system 101, forms a self-built integrated reserve microgrid 10, which can provide both minute-level backup power for the power supply and long-term power supply; the third high-voltage DC bus HVDC3 is transmitted to the first DC conversion module 03 through the DC distribution cabinet.

[0110] Optionally, when line A is supplying power normally, line B is only for backup power. Line B is temporarily switched to main power supply only when the microgrid has energy surplus and can be discharged for a long time, and line A is used as backup power. Otherwise, the second battery backup module 102 of line B only provides at least a few minutes of backup power for the power failure backup unit; when line A is supplying power abnormally, line B switches to main power supply, and an alarm is issued to maintain the corresponding fault of the power supply connection of line A.

[0111] In some optional embodiments, based on Figure 10 The first battery power supply module and the integrated reserve microgrid 10 including the second battery power supply module have DC inputs and outputs that are consistent with the high-voltage DC output of the high-frequency substation, the DC output of the disaster recovery power supply 11, and the DC input power supply standard of the data center computer room. The output DC voltage of the first battery power supply module and the integrated reserve microgrid 10 including the second battery power supply module is slightly less than or equal to their input DC voltage = the DC input voltage of the data center computer room.

[0112] In the event of a catastrophic power outage, the first battery power module and the integrated backup microgrid 10, including the second battery power module, provide minute-by-minute uninterrupted power to the data center's computer room, ensuring the normal operation of IT equipment. The second battery power module can be combined with the self-built new energy system 101 to form a microgrid, optimizing the use of self-built new energy and reducing data center electricity costs.

[0113] Under normal conditions, the output voltage of the second battery power module matches the power supply system of the third high-voltage DC bus HVDC3. After a discharge request is approved by the management system upon full energy storage, the voltage output to the third high-voltage DC bus HVDC3 by the integrated reserve microgrid 10, including the second battery power module, is slightly higher than that of the third high-voltage DC bus HVDC3. This ensures reliable discharge of the second battery power module and ensures high reliability of the AIDC power supply system. The discharge characteristic of the second battery power module in the integrated reserve microgrid 10 is that it cannot be fully discharged and must retain a certain amount of power, which is higher than the minute-level backup power requirement of the second battery power module.

[0114] In some optional embodiments, the full-link DC power supply method also includes: if the DC power supply and / or high-frequency substation in the link where the backup power supply is located fails, and the energy reserve of the integrated microgrid 10 is lower than a second preset threshold, the disaster recovery power supply 11 will supply power.

[0115] Specifically, when the DC power supply and / or high-frequency substation in the backup power supply link fails (e.g., the backup DC grid loses power, the backup high-frequency substation power module burns out), and at the same time, the energy of the reserve integrated microgrid 10 falls below a second preset threshold, the system enters the highest level of emergency state. This scenario means that both the main power supply and the backup power supply core links have failed, and the reserve integrated microgrid 10, which serves as a distributed emergency support, does not have sufficient energy to fill the power supply gap. At this time, the disaster recovery power supply 11 must be activated to avoid a power outage in the entire link.

[0116] Optionally, after line A fails and line B switches to the main power supply, once the power supply of grid B is abnormal, the disaster recovery power supply 11 is started to provide hourly power supply energy for the entire power supply system, and an early warning is issued to reduce the computing power to save data to ensure data security; if the second high-frequency substation 07 of line B is abnormal or fails, or the internal high-frequency solid-state transformer cannot maintain power supply, the second battery power supply module and the integrated microgrid are started to provide more than minute-level power supply energy for the entire power supply system, and the disaster recovery power supply 11 is started simultaneously to provide hourly power supply energy for the entire power supply system, and an early warning is issued to reduce the computing power to save data to ensure data security.

[0117] In some optional embodiments, the full-link DC power supply method further includes: controlling the static switch STS to close; if the main power supply and the backup power supply are both normal, the main power supply and the backup power supply are used to supply power simultaneously.

[0118] Specifically, when the static switch STS is closed and the main power supply and backup power supply are in normal operation, the system automatically enters the dual power supply mode. At this time, the power of the two links is converged through the static switch STS, jointly bearing the load requirements of the entire link, significantly improving the capacity and reliability of the power supply system.

[0119] In a preferred embodiment, based on Figure 10 Under normal conditions, when neither the A nor the B power supply systems are in abnormal or faulty states, the preferred method of this embodiment is to connect or switch the high-voltage DC buses output by the A and B lines in parallel through the STS static switching switch. The B-line backup power integrated microgrid is responsible for accessing and storing self-built new energy. When the energy storage of the second battery backup module 102, which was originally at the minute level, reaches a full storage state with a power supply duration of minutes, hours, or longer, a discharge request is issued. After obtaining permission from the entire system control, the output voltage of the integrated microgrid increases. At this time, VHVDC2>VHVDC1, allowing the new energy stored in the integrated microgrid to be released. In particular, during peak load conditions, which is the preferred energy release period, the energy released retains enough energy to maintain the second battery backup module 102's minute-level backup power requirements and prepares for the next cycle of new energy storage. In this way, new energy is recycled to reduce consumption and dependence on the public power grid.

[0120] Through the description of the above implementation methods, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus the necessary general hardware platform, and of course it can also be implemented by hardware, but in many cases the former is a better implementation method.

[0121] The embodiment of the present application also provides an electronic device, such as Figure 12 As shown, it includes a memory and a processor, the memory stores a computer program, and the processor is configured to run the computer program to execute the steps in any one of the above-mentioned embodiments of a full-link DC power supply method provided in the embodiments of the present application.

[0122] An embodiment of the present application also provides a computer-readable storage medium, which stores a computer program, wherein the computer program is configured to execute the steps of any one of the above-mentioned embodiments of a full-link DC power supply method provided in the embodiments of the present application when running.

[0123] In an exemplary embodiment, the computer-readable storage medium may include, but is not limited to, various media that can store computer programs, such as a USB flash drive, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk, or an optical disk.

[0124] An embodiment of the present application further provides a computer program product, which includes a computer program. When the computer program is executed by a processor, the steps in any of the above-mentioned full-link DC power supply method embodiments are implemented.

[0125] An embodiment of the present application also provides another computer program product, including a non-volatile computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, it implements the steps in any of the above-mentioned full-link DC power supply method embodiments.

[0126] Professionals may further appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the above description has generally described the components and steps of each example according to their functions. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0127] The above is a detailed introduction to a full-link DC power supply network and method provided by the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A full-link DC power supply network, characterized in that: include: A first DC link, a second DC link, a first DC conversion module, and a second DC conversion module. The first DC link includes a first high-frequency substation, a first battery backup module, and a first DC distribution cabinet. The second DC link includes a second high-frequency substation and a second DC distribution cabinet. The input end of the first high-frequency substation is connected to the first DC power supply through the first ultra-high voltage DC bus, and the output end of the first high-frequency substation is connected to the input end of the first DC distribution cabinet through the first high-voltage DC bus; The first battery backup module is connected to the first high-voltage DC bus; The output end of the first DC distribution cabinet is connected to the input end of the first DC conversion module through a second high-voltage DC bus; The output end of the first DC conversion module is connected to the input end of the second DC conversion module via a low-voltage DC bus; The output end of the second DC conversion module is connected to at least one power-consuming unit; the power-consuming unit is a power-consuming device in a data center; The input end of the second high-frequency substation is connected to the second DC power supply through the second ultra-high voltage DC bus, and the output end of the second high-frequency substation is connected to the input end of the second DC distribution cabinet through the third high-voltage DC bus; The output end of the second DC distribution cabinet is connected to the input end of the first DC conversion module through a fourth high-voltage DC bus; The first DC power supply transmits ultra-high voltage DC to the first high-frequency substation and then outputs high voltage DC into the first DC distribution cabinet. The first DC distribution cabinet outputs high voltage DC to the first DC conversion module. The first DC conversion module outputs low voltage DC to the second DC conversion module. The second DC conversion module outputs the supply voltage to the power consumption unit. The second DC power supply transmits ultra-high voltage DC to the second high-frequency substation and then outputs high voltage DC into the second DC distribution cabinet. The second DC distribution cabinet outputs high voltage DC to the first DC conversion module. The first DC conversion module outputs low voltage DC to the second DC conversion module. The second DC conversion module outputs the supply voltage to the power consumption unit. The first battery backup module is used to provide minute-level backup power for the first DC link.

2. The full-link DC power supply network according to claim 1, characterized in that: The first DC power supply includes: a first DC power grid, energy storage and a DC new energy power grid, wherein: The first DC power grid, energy storage and DC new energy power grid are interconnected in pairs; The DC new energy grid is connected to the input end of the first high-frequency substation through a first ultra-high voltage DC bus.

3. The full-link DC power supply network according to claim 1, characterized in that: The second DC power supply includes: a second DC power grid.

4. The full-link DC power supply network according to claim 1, characterized in that: The second DC link further includes: a reserve-integrated microgrid, wherein the reserve-integrated microgrid is connected to the third high-voltage DC bus.

5. The full-link DC power supply network according to claim 4, characterized in that: The integrated reserve microgrid includes: self-built new energy system and second battery backup module, among which, The self-built new energy system and the second battery backup module are both connected to the third high-voltage DC bus.

6. The full-link DC power supply network according to claim 4, characterized in that: Also includes: Static switch, where The first end of the static switch is connected to the output end of the first high-frequency substation through the first high-voltage DC bus, and the second end of the static switch is connected to the output end of the second high-frequency substation through the third high-voltage DC bus.

7. The full-link DC power supply network according to claim 4, characterized in that: Also includes: A disaster recovery power supply, wherein the disaster recovery power supply is connected to the first high-voltage DC bus and / or the third high-voltage DC bus.

8. The full-link DC power supply network according to claim 7, characterized in that: The output voltages of the first high-frequency substation and the second high-frequency substation are both higher than the output voltage of the disaster recovery power supply; The output voltage of the disaster recovery power supply is higher than the output voltages of the first battery backup module and the second battery backup module.

9. The full-link DC power supply network according to claim 4, characterized in that: The first DC conversion module includes: at least one first DC-DC circuit, wherein: The input end of each first DC-DC circuit is connected to a point and then leads to the input end of the first DC conversion module; the output end of each first DC-DC circuit is connected to a point and then leads to the output end of the first DC conversion module.

10. The full-link DC power supply network according to claim 9, characterized in that: The first DC conversion module further includes an automatic transfer switch, wherein: The input end of each first DC-DC circuit is connected to the second high-voltage DC bus and the fourth high-voltage DC bus through the automatic transfer switch.

11. The full-link DC power supply network according to claim 4, characterized in that: The second DC conversion module includes: at least one DC-DC conversion unit, wherein: The input end of each DC-DC conversion unit is connected to the output end of the first DC conversion module through the low-voltage DC bus; the output end of each DC-DC conversion unit is connected to an electric unit.

12. The full-link DC power supply network according to claim 11, characterized in that: The DC-DC conversion unit includes: at least one second DC-DC circuit, wherein: The input end of each second DC-DC circuit is connected to a point and then leads to the input end of the DC-DC conversion unit; the output end of each second DC-DC circuit is connected to a point and then leads to the output end of the DC-DC conversion unit.

13. The full-link DC power supply network according to claim 4, characterized in that: Also includes: The super-capacity unit is connected to the low-voltage DC bus.

14. A full-link DC power supply method, characterized in that: Based on the full-link DC power supply network according to any one of claims 4 to 13, the power supply method includes: Control the static switch to disconnect; By setting the output voltage levels of the first high-frequency substation and the second high-frequency substation, the first DC power supply or the second DC power supply is selected as the main power supply, and the other DC power supply is used as the backup power supply; Determine whether the DC power supply and high-frequency substation in the link where the main power supply is located are normal; If the DC power supply and high-frequency substation in the link where the main power supply is located are normal, power will be supplied by the main power supply.

15. The full-link DC power supply method according to claim 14, characterized in that: Also includes: If the DC power supply and / or high-frequency substation of the link where the main power supply is located fails, determine whether the DC power supply and high-frequency substation of the link where the backup power supply is located are normal; If the DC power supply and high-frequency substation in the link where the backup power supply is located are normal, the backup power supply will be used for power supply.

16. The full-link DC power supply method according to claim 15, characterized in that: Also includes: Determining in real time that the energy of the integrated storage microgrid is higher than a first preset threshold; If the energy of the integrated reserve microgrid is higher than the first preset threshold, the current power supply mode is adjusted to be supplied by the integrated reserve microgrid.

17. The full-link DC power supply method according to claim 16, characterized in that: Also includes: If the DC power supply and / or high-frequency substation in the backup power supply link fails and the energy of the integrated microgrid is lower than the second preset threshold, the disaster recovery power supply will be used for power supply.

18. The full-link DC power supply method according to claim 14, characterized in that: Also includes: Control the closing of the static switch; If both the main power supply and the backup power supply are normal, they will supply power simultaneously.

19. An electronic device, characterized in that: include: memory for storing computer programs; A processor, configured to implement the steps of the full-link DC power supply method according to any one of claims 14 to 16 when executing the computer program.

20. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, wherein when the computer program is executed by a processor, the steps of the full-link DC power supply method according to any one of claims 14 to 16 are implemented.

21. A computer program product comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the full-link DC power supply method according to any one of claims 14 to 18 are implemented.

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