Computing power center power supply system, control method and storage medium

Abstract

The invention discloses a computing power center power supply system, a control method and a storage medium. The system comprises a medium-voltage network, a power generation module and an energy storage power supply module, wherein the power generation module and the energy storage power supply module are connected with the medium-voltage network; the energy storage power supply module comprises a first transformer, a first bidirectional converter, a first energy storage device, a DC / DC converter and a computing power center core load; the high-voltage side of the first transformer is connected to a medium-voltage network, and the low-voltage side is connected to the alternating-current side of the first bidirectional converter; the direct current side of the first bidirectional converter, the first energy storage device and the input end of the DC / DC converter are jointly connected to a direct current point; the output end of the DC / DC converter is connected with the computing power center core load; according to the invention, seamless switching of hybrid power supply or energy storage power supply can be carried out during grid-connected and off-grid switching.

Description

Technical Field

[0001] The present invention belongs to the technical field of DC power supply, and particularly relates to a power supply system, a control method and a storage medium for a computing power center. Background Art

[0002] With the explosive growth of AI large models and cloud service technologies, the energy consumption of global data centers has been climbing at an annual rate of 12%. The computing power center, as the infrastructure supporting the operation of AI large models and cloud services, relies on continuous power support for its efficient operation. Once the power supply fluctuates or is interrupted, it will not only lead to the failure of ongoing data processing tasks, causing huge economic losses, but also pose a threat to the security of the stored data. Therefore, building a power supply system that can meet the high-load and long-term operation requirements of the computing power center is not only a prerequisite for ensuring the stable development of technology but also an important part of promoting the green transformation of the digital economy.

[0003] Traditional data center power supply systems generally adopt an architecture of dual mains power access, traditional uninterruptible power supplies (UPS), and diesel generator backups. However, due to carbon dioxide pollution from diesel generators; and the short lifespan and low discharge rate of lead-acid batteries used in traditional UPSs, there are risks of mid-course battery replacement and waste of capacity redundancy of more than 15%, increasing operating costs and unable to meet the requirements of rapid construction of computing power centers; In summary, in recent years, a grid-connected power supply scheme using new energy + grid has been adopted. However, power supply using new energy is restricted by on-grid / off-grid switching technology and cannot meet the seamless switching requirement of 10 ms for computing power centers. Moreover, under pure off-grid operation, affected by the volatility of new energy such as wind and light, it cannot meet the voltage fluctuation requirements of computing power centers. Therefore, it is necessary to configure both electrochemical energy storage and a large number of UPS devices at the same time, but this also leads to the problem of redundant configuration of battery capacity. Summary of the Invention

[0004] The purpose of the present invention is to provide a power supply system, a control method and a storage medium for a computing power center, which can perform seamless switching between hybrid power supply and energy storage power supply during on-grid / off-grid switching, cope with the waveform characteristics of new energy power generation and the impact of grid power rationing, and improve the power supply stability and security of the computing power center.

[0005] To achieve the above object, the present invention is implemented by adopting the following technical solutions: In a first aspect, the present invention provides a power supply system for a computing power center, including: a medium-voltage network, a power generation module and an energy storage power supply module connected to the medium-voltage network; the power generation module is used to deliver electric power to the medium-voltage network; the energy storage power supply module is used to hybridly supply power to the core load of the computing power center through the energy storage device in the medium-voltage network and the energy storage power supply module, or supply power to the core load of the computing power center through the energy storage device when the medium-voltage network or the power generation module fails, and includes a first transformer, a first bidirectional converter, a first energy storage device, a DC / DC converter and the core load of the computing power center; the high-voltage side of the first transformer is connected to the medium-voltage network, and the low-voltage side is connected to the AC side of the first bidirectional converter; the DC side of the first bidirectional converter, the first energy storage device and the input end of the DC / DC converter are commonly connected to a DC point; the output end of the DC / DC converter is connected to the core load of the computing power center.

[0006] Optionally, the power generation module is any one of a large power grid, a wind power generation unit and a photovoltaic power generation unit.

[0007] Optionally, the photovoltaic power generation unit includes a second transformer, a photovoltaic inverter and a photovoltaic panel connected in sequence.

[0008] Optionally, the wind power generation unit includes a third transformer and a wind power generation set connected in sequence.

[0009] Optionally, the system further includes a pure energy storage module connected to the medium-voltage network, and the pure energy storage module includes a third transformer, a second bidirectional converter and a second energy storage device; the high-voltage side of the third transformer is connected to the medium-voltage network, and the low-voltage side is connected to the AC side of the third transformer; the DC side of the second bidirectional converter is connected to the second energy storage device.

[0010] Optionally, the number of the energy storage power supply module, the power generation module and the pure energy storage module is at least one.

[0011] Optionally, the system further includes a station transformer and a non-core load of the computing power center; the station transformer is connected to the medium-voltage network; the non-core load of the computing power center is connected to the station transformer.

[0012] Optionally, both the first energy storage device and the second energy storage device are battery compartments, and the internal batteries use lithium batteries.

[0013] In a second aspect, the present invention provides a control method applied to the computing power center power supply system described in the first aspect, including: Obtain the voltage value of the medium-voltage network, the computing power center load prediction value, the total output value of the power generation module and the battery SOC state; the computing power center load prediction value includes the prediction values of the core load and the non-core load; Based on the voltage value of the medium-voltage network, the load prediction value of the computing power center, the total output value of the power generation module, and the battery SOC state, the power supply system of the computing power center is controlled. The control process includes: When the voltage value of the medium-voltage network is lower than the first threshold, a fault occurs in the medium-voltage network or the power generation module. Control the disconnection of the connection between the first bidirectional converter and the first transformer. The first energy storage device directly supplies power to the core load of the computing power center through the DC / DC converter until the voltage value of the medium-voltage network recovers to the second threshold. Then, control the first bidirectional converter and the first transformer to be reconnected to the grid, and the medium-voltage network and the first energy storage device supply power to the core load of the computing power center in a hybrid manner; where the second threshold is greater than the first threshold; When the battery SOC state reaches the upper limit value and the total output value of the power generation module is greater than the load prediction value, control the first energy storage device and the pure energy storage module not to charge, and discard the excess power in the medium-voltage network through the power generation module to maintain power supply stability; When the battery SOC state does not reach the upper limit value and the total output value of the power generation module is greater than the load prediction value, control the output power of the first transformer and the third transformer, thereby optimizing the charging power of the first energy storage device and the pure energy storage module to ensure power supply stability; When the battery SOC state is not greater than the lower limit value and the total output value of the power generation module is less than the load prediction value, control the first energy storage device and the pure energy storage module to discharge, and cut off the non-core load of the computing power center to maintain the stable operation of the core load of the computing power center.

[0014] In a third aspect, the present invention provides a computer-readable storage medium that stores a computer program, and when the computer program is executed, it implements the control method described in the second aspect.

[0015] Compared with the prior art, the beneficial effects achieved by the present invention: The present invention provides a power supply system, a control method, and a storage medium for a computing power center. The power supply system includes a medium-voltage network, a power generation module, and an energy storage power supply module; the energy storage power supply module includes a first transformer, a first bidirectional converter, a first energy storage device, a DC / DC converter, and the core load of the computing power center. It can perform seamless switching between hybrid power supply and energy storage power supply during grid connection and disconnection, that is, in the case of a medium-voltage network fault, and cope with the influence of new energy power generation waveform and grid power rationing, improving the power supply stability and safety of the computing power center.

[0016] The present invention provides a power supply system, a control method, and a storage medium for a computing power center. By using the power supply system of the present invention, the UPS device can be reduced or not connected, which not only solves the problem of redundant battery configuration, but also reduces the floor area of the control room, saves land and civil engineering construction costs, improves the construction return rate of the computing power center, and reduces project costs; The present invention provides a power supply system, a control method and a storage medium for a computing power center. The coupling between the power generation end and the load end of the power supply system is AC coupling. Compared with the current DC coupling power supply system, it can avoid the inverter coordination problem and is more convenient for capacity expansion.

[0017] The present invention provides a power supply system, a control method and a storage medium for a computing power center. The core load of the power supply system is not directly connected to the medium-voltage network for power supply through the medium-voltage network, but is powered by the first energy storage device and DC / DC, and the isolation between the medium-voltage network and the core load can be achieved through the first bidirectional converter. The fluctuations of the power generation end or other loads will not be transmitted to the DC point, realizing stable and high-quality power supply. The core load of the computing power center can operate continuously and stably, the availability of the power supply network is improved, and at the same time, a large number of UPS devices are avoided.

[0018] The present invention provides a power supply system, a control method and a storage medium for a computing power center. The power supply system can also be provided with a pure energy storage module to increase the operating capacity of the medium-voltage network and maintain the stability of the medium-voltage network.

[0019] The present invention provides a power supply system, a control method and a storage medium for a computing power center. The power supply system also includes a station transformer and non-core loads of the computing power center; for other loads of the computing power center, such as non-core loads such as air conditioners and lighting, the station transformer power supply mode is adopted, and the capacity of the station transformer is dynamically reduced according to the computing power load demand, reducing the initial investment cost; and it can be cut off when the output of the power generation module is insufficient to maintain power supply stability; The present invention provides a power supply system, a control method and a storage medium for a computing power center. The energy storage power supply module, the power generation module and the pure energy storage module of the power supply system are modularly connected in parallel with the medium-voltage network, and multiple groups of energy storage power supply modules, power generation modules and pure energy storage modules can be supported to be connected to the medium-voltage network to meet various computing power requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The figure shows the structural schematic diagram of the power supply system for the computing power center in Embodiment 1 of the present invention; Figure 2 The figure shows the structural schematic diagram of the power supply system for the computing power center in Embodiment 2 of the present invention; Figure 3 The figure shows the flow schematic diagram of the control method in Embodiment 3 of the present invention; Figure 4 The figure shows the control process flow diagram of seamless switching in Embodiment 3 of the present invention; Figure 5 The figure shows the control process flow diagram of Soc optimization and power abandonment in Embodiment 3 of the present invention.

[0021] In the figure: 1, medium-voltage network; 2, power generation module; 3, energy storage power supply module; 31, first transformer; 32, first bidirectional converter; 33, first energy storage device; 34, DC / DC converter; 35, core load of computing power center; 21, second transformer; 22, photovoltaic inverter; 23, photovoltaic panel; 4, pure energy storage module; 41, third transformer; 42, second bidirectional converter; 43, second energy storage device; 5, secondary power supply module; 51, station service transformer; 52, non-core load of computing power center. Detailed implementation manners

[0022] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0023] Embodiment 1

[0024] As Figure 1 shown, an embodiment of the present invention introduces a power supply system for a computing power center, including: a medium-voltage network 1, a power generation module 2 and an energy storage power supply module 3 connected to the medium-voltage network 1; the power generation module 2 is used to deliver power to the medium-voltage network 1; the energy storage power supply module is used to perform hybrid power supply to the core load 35 of the computing power center through the energy storage device in the medium-voltage network 1 and the energy storage power supply module 3, or supply power to the core load 35 of the computing power center through the energy storage device when the medium-voltage network 1 or the power generation module 2 fails, and includes a first transformer 31, a first bidirectional converter 32, a first energy storage device 33, a DC / DC converter 34 and the core load 35 of the computing power center; the high-voltage side of the first transformer 31 is connected to the medium-voltage network 1, and the low-voltage side is connected to the AC side of the first bidirectional converter 32; the DC side of the first bidirectional converter 32, the first energy storage device 33 and the input end of the DC / DC converter 34 are commonly connected to a DC point; the output end of the DC / DC converter 34 is connected to the core load 35 of the computing power center.

[0025] Specifically, the power generation module 2 can use large-grid power generation, convert the high voltage output by the large grid into medium voltage through step-down transformation, and input it into the medium-voltage network 1, that is Figure 1 the medium-voltage busbar in Specifically, the power generation module 2 can also use new energy power generation, such as using renewable energy wind energy or light energy for power generation; When using wind energy for power generation, the power generation module 2 is a wind power generation unit, and the wind power generation unit includes a third transformer and a wind power generation set connected in sequence, wherein the low-voltage end of the third transformer is connected to the wind power generation set, and the high-voltage end is connected to the medium-voltage network 1, so that the low voltage output by the wind power generation set is boosted by the third transformer and then connected to the medium-voltage network, realizing the efficient conversion and transmission of wind energy; When using light energy for power generation, the power generation module 2 is a photovoltaic power generation unit, asFigure 1 In this embodiment, a photovoltaic power generation unit is adopted for power generation, which includes a second transformer 21, a photovoltaic inverter 22 and a photovoltaic panel 23 connected in sequence; among them, the low-voltage end of the second transformer 21 is connected to the photovoltaic inverter 22, and the high-voltage end is connected to the medium-voltage network 1; the photovoltaic panel 23 converts light energy into direct current DC, and then converts the direct current DC into alternating current AC through the photovoltaic inverter 22, and is boosted by the second transformer 21 to obtain medium voltage 10kV and transmitted to the medium-voltage network 1, realizing the efficient conversion and transmission of light energy; in this embodiment, the total capacity of the photovoltaic panel 23 is configured as 8MWp; In this embodiment, as Figure 1 shown, one power generation module 2 and one energy storage power supply module 3 are provided, but a power supply system for a computing center proposed by the present invention can be provided with multiple power generation modules 2 and multiple energy storage power supply modules 3, which are connected to the medium-voltage network 1 to realize the power supply operation of different computing powers; In this embodiment, the first energy storage device 33 is a battery cabin, and the batteries in the battery cabin can be lithium batteries; In this embodiment, the core load 35 of the computing center totals 1MW; In this embodiment, the energy storage power supply module 3 includes a first transformer 31, a first bidirectional converter 32, a first energy storage device 33, a DC / DC converter 34 and a core load 35 of the computing center connected in sequence; among them, the high-voltage side of the first transformer 31 is connected to the medium-voltage network 1, and the low-voltage side is connected to the AC side of the first bidirectional converter 32; the DC side of the first bidirectional converter 32 is connected to the first energy storage device 33 and the input end of the DC / DC converter 34; the output end of the DC / DC converter 34 is connected to the core load 35 of the computing center; Specifically, when connected to the grid, the alternating current of 10kV in the medium-voltage network is stepped down by the first bidirectional converter 35 to obtain low-voltage alternating current of 0.69kV, and the low-voltage alternating current of 0.69kV is converted into direct current of 1.5kV through the first bidirectional converter 32. The direct current of 1.5kV is converted into alternating current of 0.4kV through the DC / DC converter 34 and is transmitted to the core load 35 of the computing center through the low-voltage power distribution cabinet; at the same time, the first energy storage device 33 can output direct current of 1.5kV and be converted into alternating current of 0.4kV through the DC / DC converter 34 and be transmitted to the core load 35 of the computing center through the low-voltage power distribution cabinet, realizing the hybrid power supply of the medium-voltage network and the first energy storage device for the core load of the computing center; Specifically, when off-grid, the connection between the first bidirectional converter 32 and the first transformer 31 is disconnected, and the first energy storage device 33 outputs direct current of 1.5kV and is converted into alternating current of 0.4kV through the DC / DC converter 34 and is transmitted to the core load 35 of the computing center through the low-voltage power distribution cabinet, In summary, the present invention can perform seamless switching between hybrid power supply and energy storage power supply during grid-connected and off-grid switching, cope with the waveform characteristics of new energy power generation and the impact of grid power rationing, and improve the power supply stability and safety of the computing power center.

[0026] Embodiment 2

[0027] As Figure 2 shown, the embodiment of the present invention introduces a power supply system for a computing power center, which further includes a pure energy storage module 4 and a secondary power supply module 5 connected to the medium-voltage network 1 on the basis of the power supply system described in Embodiment 1; Among them, the pure energy storage module 4 includes a third transformer 41, a second bidirectional converter 42, and a second energy storage device 43; the high-voltage side of the third transformer 41 is connected to the medium-voltage network 1, and the low-voltage side is connected to the AC side of the third transformer 41; the DC side of the second bidirectional converter 43 is connected to the second energy storage device 43; the secondary power supply module 5 includes a station transformer 51 and non-core loads 52 of the computing power center; the station transformer 51 is connected to the medium-voltage network 1; the non-core loads 52 of the computing power center are connected to the station transformer 51.

[0028] In this embodiment, by adding the pure energy storage module 4 to the power supply system described in Embodiment 1 and increasing the operating capacity of the medium-voltage network, the stability of the medium-voltage network can be maintained, and the total capacity configuration is 7.5 MW. The number of pure energy storage modules 4 is at least one; In this embodiment, the high-voltage side (10 kV) of the station transformer 51 is connected to the medium-voltage network 1, and the low-voltage side (0.4 kV) is connected to the non-core loads 52 of the computing power center. The capacity of the station transformer 51 is reduced to 50% of the conventional design to supply power to non-core loads such as air conditioners and lighting; specifically, the capacity of the station transformer is dynamically reduced according to the computing power load demand, reducing the initial investment cost; and it can be cut off when the output of the power generation module is insufficient to maintain power supply stability; In this embodiment, as Figure 2 shown, the number of the pure energy storage module 4 and the energy storage power supply module 3 is two; The relevant parameters of the power supply system proposed in this embodiment include: The rated capacities of the second bidirectional converter 42 and the first bidirectional converter 32 are both 2 * 1.25 MW, the AC side is 690 V / 50 Hz, and the DC side voltage range is 1050 V to 1500 V; since the number of the pure energy storage module 4 and the energy storage power supply module 3 is two, a total of 4 units are configured, and the nominal capacity totals 10 MW; The DC side of the output end of the DC / DC converter 34 is 400 V / 50 Hz, the voltage fluctuation range is less than 2%, the DC side voltage range of the input end is 1050 V to 1500 V, and the rated power is 700 kW / unit; 2 units are configured, and the nominal capacity totals 1.4 MW.

[0029] The capacity of the battery compartments in the first energy storage device 33 and the second energy storage device 43 is 5 MWh, and the SOC operating range is 5% - 95%. There are 4 battery compartments in this system, with a total configuration of 20 MWh.

[0030] Embodiment 3

[0031] As Figure 3 shown, the present invention provides a control method applied to the power supply system of the computing power center described in Embodiment 2, including: S1: Obtain the voltage value of the medium - voltage network, the load prediction value of the computing power center, the total output value of the power generation module, and the battery SOC state; the load prediction value of the computing power center includes the prediction values of the core load and the non - core load; S2: Control the power supply system of the computing power center based on the voltage value of the medium - voltage network, the load prediction value of the computing power center, the total output value of the power generation module, and the battery SOC state. In this embodiment, in step S2, controlling the power supply system of the computing power center based on the voltage value of the medium - voltage network, the load prediction value of the computing power center, the total output value of the power generation module, and the battery SOC state includes two control scenarios: Control scenario one: seamless switching As Figure 4 shown, the control process of seamless switching; Judge whether the voltage value of the medium - voltage network is lower than the first threshold (80%); If it is lower, indicating that a fault has occurred in the medium - voltage network or the power generation module, then control the disconnection of the connection between the first bidirectional converter and the first transformer, and the first energy storage device directly supplies power to the core load of the computing power center through the DC / DC converter; until the voltage value of the medium - voltage network recovers to the second threshold (95%), control the first bidirectional converter to be re - connected to the first transformer, and the medium - voltage network and the first energy storage device supply power to the core load of the computing power center in a hybrid manner; where the second threshold is greater than the first threshold; Control scenario one: SOC optimization and power curtailment As Figure 5 shown, the control process of SOC optimization and power curtailment; Judge whether the battery SOC state reaches the upper limit value (95%), and whether the total output value of the power generation module is greater than the load prediction value; When the battery SOC state reaches the upper limit value and the total output value of the power generation module is greater than the load prediction value, control the first energy storage device and the pure energy storage module not to charge, and curtail the excess power in the medium - voltage network through the power generation module to maintain power supply stability; When the battery SOC state does not reach the upper limit value and the total output value of the power generation module is greater than the load prediction value, control the output power of the first transformer and the third transformer, thereby optimizing the charging power of the first energy storage device and the pure energy storage module to ensure stable power supply; Judge whether the battery SOC state is greater than the lower limit value (15%) and whether the total output value of the power generation module is less than the load prediction value; When the battery SOC state is not greater than the lower limit value and the total output value of the power generation module is less than the load prediction value, control the first energy storage device and the pure energy storage module to discharge, and cut off the non-core load of the computing center to maintain the stable operation of the core load of the computing center.

[0032] Embodiment 4

[0033] The present invention provides a device for implementing the control method described in Embodiment 3, including: A data acquisition module for acquiring the voltage value of the medium-voltage network, the load prediction value of the computing center, the total output value of the power generation module, and the battery SOC state; the load prediction value of the computing center includes the prediction values of the core load and the non-core load; A control module for controlling the power supply system of the computing center based on the voltage value of the medium-voltage network, the load prediction value of the computing center, the total output value of the power generation module, and the battery SOC state.

[0034] Embodiment 5

[0035] This embodiment provides a computer-readable storage medium storing a computer program, and when the computer program is executed, it implements the control method of the computing center power supply system described in Claim Embodiment 3.

[0036] Those skilled in the art should understand that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0037] This application is described with reference to the flowcharts and / or block diagrams of methods, apparatuses (systems), and computer program products according to embodiments of the present application. It should be understood that each flow and / or block in the flowchart and / or block diagram, as well as the combination of flows and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, such that the instructions executed by the processor of the computer or other programmable data processing device generate a device for implementing the specified functions in the Figure 1 one or more flows and / or blocks Figure 1 one or more blocks.

[0038] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, such that the instructions stored in the computer-readable memory generate a manufactured article including an instruction device that implements the specified functions in the Figure 1 one or more flows and / or blocks Figure 1 one or more blocks.

[0039] The embodiments of the present invention have been described above in conjunction with the accompanying drawings. However, the present invention is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present invention, those of ordinary skill in the art can also make many forms without departing from the spirit of the present invention and the scope protected by the claims. All of these are within the protection scope of the present invention.

Claims

1. A power supply system for a computing power center, characterized in that: include: A medium voltage network, a power generation module and an energy storage power supply module connected to the medium voltage network; The power generation module is used to transmit electricity to the medium voltage network; the energy storage power supply module is used to provide mixed power supply to the core load of the computing power center through the medium voltage network and the energy storage device in the energy storage power supply module, or to supply power to the core load of the computing power center through the energy storage device when the medium voltage network or the power generation module fails, including a first transformer, a first bidirectional converter, a first energy storage device, a DC / DC converter and the core load of the computing power center; the high voltage side of the first transformer is connected to the medium voltage network, and the low voltage side is connected to the AC side of the first bidirectional converter; the DC side of the first bidirectional converter, the first energy storage device and the input end of the DC / DC converter are commonly connected to the DC point; the output end of the DC / DC converter is connected to the core load of the computing power center.

2. The computing center power supply system according to claim 1, characterized in that: The power generation module is any one of a large power grid, a wind power generation unit and a photovoltaic power generation unit.

3. The computing center power supply system according to claim 2, characterized in that: The photovoltaic power generation unit includes a second transformer, a photovoltaic inverter and a photovoltaic panel connected in sequence.

4. The computing center power supply system according to claim 2, characterized in that: The wind power generation unit comprises a third transformer and a wind power generator set which are connected in sequence.

5. The computing center power supply system according to claim 2, characterized in that: The system also includes a pure energy storage module connected to the medium voltage network, and the pure energy storage module includes a third transformer, a second bidirectional converter and a second energy storage device; the high voltage side of the third transformer is connected to the medium voltage network, and the low voltage side is connected to the AC side of the third transformer; the DC side of the second bidirectional converter is connected to the second energy storage device.

6. The computing center power supply system according to claim 5, characterized in that: The number of the energy storage power supply module, the power generation module and the pure energy storage module is at least one.

7. The computing center power supply system according to claim 1, characterized in that: The system also includes a station transformer and a non-core load of a computing power center; the station transformer is connected to a medium voltage network; and the non-core load of a computing power center is connected to the station transformer.

8. The computing center power supply system according to claim 1, characterized in that: The first energy storage device and the second energy storage device are both battery compartments, and the internal batteries are lithium batteries.

9. A control method for a computing center power supply system as claimed in any one of claims 1 to 8, characterized in that: include: Obtain the voltage value of the medium voltage network, the load forecast value of the computing center, the total output value of the power generation module, and the battery SOC status; The computing center load prediction value includes the prediction values ​​of core load and non-core load; Based on the voltage value of the medium voltage network, the load forecast value of the computing center, the total output value of the power generation module and the battery SOC status, the power supply system of the computing center is controlled. The control process includes: When the voltage value of the medium voltage network is lower than the first threshold value, the medium voltage network or the power generation module fails, the connection between the first bidirectional converter and the first transformer is controlled to be disconnected, and the first energy storage device directly supplies power to the core load of the computing power center through the DC / DC converter, until the voltage value of the medium voltage network is restored to the second threshold value, the first bidirectional converter and the first transformer are controlled to be reconnected to the grid, and the medium voltage network and the first energy storage device provide mixed power supply to the core load of the computing power center; wherein the second threshold value is greater than the first threshold value; When the battery SOC state reaches the upper limit value and the total output value of the power generation module is greater than the load forecast value, the first energy storage device and the pure energy storage module are controlled not to charge, and the excess power in the medium voltage network is abandoned through the power generation module to maintain stable power supply; When the battery SOC state does not reach the upper limit value and the total output value of the power generation module is greater than the load prediction value, the output power of the first transformer and the third transformer is controlled to optimize the charging power of the first energy storage device and the pure energy storage module to ensure stable power supply; When the battery SOC state is not greater than the lower limit value, and the total output value of the power generation module is less than the load forecast value, the first energy storage device and the pure energy storage module are controlled to discharge, and the non-core load of the computing power center is cut off to maintain the stable operation of the core load of the computing power center.

10. A computer-readable storage medium, characterized in that: It stores a computer program, which implements the control method described in claim 9 when executed.

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