Standby power method and device of centralized power supply type cabinet, electronic equipment and storage medium

Abstract

The invention discloses a standby power method and device of a centralized power supply type cabinet, electronic equipment and a storage medium, and relates to the technical field of power supply equipment. Based on the current power utilization time period, the output voltage of the first power transmission network, the output voltage of the second power transmission network and the output voltage of the third power transmission network, whether the power supply cabinet meets a preset standby power supply condition or not is judged; and if the power supply cabinet meets the preset standby power supply condition, supplying power to the centralized power supply type cabinet through the energy storage assembly. The technical problems that an online uninterruptible power supply adopted by an existing data center is low in conversion efficiency, a backup uninterruptible power supply is long in switching time and low in reliability, and a power pool of a centralized power supply type cabinet is large in heat productivity and high in cost are solved, and the purposes of reducing the power consumption cost of the centralized power supply type cabinet, reducing the power consumption in the peak period of power consumption and improving the reliability of the centralized power supply type cabinet are achieved. The electricity consumption in the electricity consumption trough period is increased, and the power supply and storage difficulty of the power grid is relieved.

Description

Technical Field

[0001] The present application relates to the technical field of power supply equipment, and particularly to a power backup method, device, electronic device, and storage medium for a centrally powered cabinet. Background Art

[0002] In the past decade, with the continuous development of industrial production and the increasing per capita electricity consumption in daily life, the total industrial electricity consumption in cities has shown a steady growth trend. At the same time, the power consumption of data centers has also been rising rapidly, bringing great pressure to the power grid supply.

[0003] In urban electricity consumption, there is a significant difference in electricity consumption between peak hours and valley hours. Usually, the peak-valley electricity gap can reach three times or more. This imbalance in peak-valley electricity not only exacerbates the power supply pressure on the power grid but also increases the electricity cost of enterprises. With the further increase in the difference between peak and valley electricity prices at the urban end, enterprises face the challenge of reducing electricity consumption during peak hours and increasing electricity consumption during valley hours in order to reduce the overall electricity cost.

[0004] To address the above challenges, the main power backup methods currently adopted by data centers include online uninterruptible power supply (UPS), standby uninterruptible power supply (UPS), and a power supply pool for centrally powered cabinets. However, the existing power backup methods for data centers have certain deficiencies in terms of energy efficiency, reliability, and cost, and urgently need to be solved. Summary of the Invention

[0005] The present application provides a power backup method, device, electronic device, and storage medium for a centrally powered cabinet, so as to at least solve the technical problems of low conversion efficiency of the online uninterruptible power supply adopted by existing data centers, long switching time and low reliability of the standby uninterruptible power supply, large heat generation of the power supply pool for centrally powered cabinets, and high cost.

[0006] The present application provides a power backup method for a centrally powered cabinet. The centrally powered cabinet is connected to the output end of a power supply cabinet, the input end of the power supply cabinet is connected to a first power grid, and an energy storage component is arranged in the power supply cabinet. The method includes: obtaining the current power of the energy storage component, the current power consumption time period, the output voltage of the first power grid, the output voltage of the second power grid, and the output voltage of the third power grid; if the current power is greater than a first preset power, then based on the current power consumption time period, the output voltage of the first power grid, the output voltage of the second power grid, and the output voltage of the third power grid, determining whether the power supply cabinet meets the preset power backup supply condition; if the power supply cabinet meets the preset power backup supply condition, then supplying power to the centrally powered cabinet through the energy storage component.

[0007] The present application also provides a backup power supply device for a centralized power supply cabinet. The centralized power supply cabinet is connected to the output end of a power supply cabinet, the input end of the power supply cabinet is connected to a first power grid, and an energy storage component is arranged in the power supply cabinet, including: an acquisition module, configured to acquire the current power of the energy storage component, the current power consumption time period, the output voltage of the first power grid, the output voltage of the second power grid, and the output voltage of the third power grid; a judgment module, configured to, if the current power is greater than a first preset power, judge whether the power supply cabinet meets a preset backup power supply condition based on the current power consumption time period, the output voltages of the first power grid, the second power grid, and the third power grid; a power supply module, configured to, if the power supply cabinet meets the preset backup power supply condition, supply power to the centralized power supply cabinet through the energy storage component.

[0008] The present application also provides an electronic device, including: a memory, configured to store a computer program; a processor, configured to implement the steps of any of the above backup power supply methods for a centralized power supply cabinet when executing the computer program.

[0009] The present application also provides a computer-readable storage medium, in which a computer program is stored. When the computer program is executed by a processor, the steps of any of the above backup power supply methods for a centralized power supply cabinet are implemented.

[0010] Through the present application, when the current power of the energy storage component is greater than the first preset power, it is judged whether the power supply cabinet meets the preset backup power supply condition based on the current power consumption time period, the output voltage of the first power grid, the output voltage of the second power grid, and the output voltage of the third power grid; if the power supply cabinet meets the preset backup power supply condition, the energy storage component is used to supply power to the centralized power supply cabinet. Therefore, the technical problems that the online uninterruptible power supply adopted by the existing data center has low conversion efficiency, the standby uninterruptible power supply has a long switching time and low reliability, the power supply pool of the centralized power supply cabinet has a large heat generation amount and high cost can be solved, and the technical effects of reducing the power consumption cost of the centralized power supply cabinet, reducing the power consumption during peak power consumption periods, increasing the power consumption during low power consumption periods, alleviating the difficulties of power grid power supply and storage, having high conversion efficiency, high reliability, saving the enterprise power consumption cost, reducing the power grid power supply pressure, and giving full play to the function of the storage battery are achieved. Description of the Drawings

[0011] To more clearly illustrate the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0012] Figure 1 Schematic diagram of the backup power supply of an online uninterruptible power supply (UPS) in the related art

[0013] Figure 2 Schematic diagram of the backup power supply of a standby uninterruptible power supply (UPS) in the related art

[0014] Figure 3 Schematic diagram of a centralized power supply cabinet power pool in the related art

[0015] Figure 4 Schematic diagram of the structure of the backup power supply for a centralized power supply cabinet according to an embodiment of the present application

[0016] Figure 5 Functional schematic diagram of a rectification unit according to an embodiment of the present application

[0017] Figure 6 Functional schematic diagram of a DC-DC buck conversion unit according to an embodiment of the present application

[0018] Figure 7 Schematic diagram of the control logic of a power cabinet control unit according to an embodiment of the present application

[0019] Figure 8 Flowchart of a backup power supply method for a centralized power supply cabinet provided by an embodiment of the present application

[0020] Figure 9 Flowchart of a backup power supply method for a centralized power supply cabinet according to an embodiment of the present application

[0021] Figure 10 Schematic diagram of the structure of a backup power supply method for a centralized power supply cabinet according to another embodiment of the present application

[0022] Figure 11 Schematic diagram of a backup power supply method for a centralized power supply cabinet provided by an embodiment of the present application

[0023] Figure 12 Schematic diagram of the structure of an electronic device according to an embodiment of the present application Detailed implementation manners

[0024] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0025] It should be noted that in the description of this application, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly 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, rather than to describe a specific order or sequence.

[0026] Before specifically introducing the power backup method of the centralized power supply cabinet of this application, a brief introduction is made to the power backup methods mainly adopted in current data centers, including online uninterruptible power supply UPS (Uninterruptible Power Supply), offline uninterruptible power supply UPS, and the power supply pool of the centralized power supply cabinet.

[0027] (1) The power backup method of the online uninterruptible power supply UPS is as Figure 1 shown. The power is taken from 220VAC in the data center computer room and rectified from alternating current to direct current by the rectification unit. When the mains power function is normal, the rectification unit works normally, converts the direct current into alternating current through the inversion unit, supplies power to the power-consuming equipment of the rear-end cabinet, and at the same time charges the storage battery with the rectified direct current to ensure sufficient battery power. When the mains power is interrupted, the rectification unit stops working, the storage battery provides direct current for the inversion unit, and after passing through the inversion unit, it provides alternating current for the rear end. At the same time, the diesel generator is started and starts before the mains power is restored and the battery power is exhausted to supply power to the rear-end equipment. The device composed of the rectification unit, the storage battery, and the inversion unit is the online uninterruptible power supply UPS.

[0028] However, when the online uninterruptible power supply UPS works normally, after the mains power is input, it needs to first convert the alternating current into direct current through the rectifier, and then convert the direct current into alternating current through the inverter and output it to the load. This double conversion process will inevitably cause energy loss, resulting in relatively low conversion efficiency.

[0029] (2) The power backup method of the offline uninterruptible power supply UPS is as Figure 2As shown in the figure, when the mains power is normally supplied, the mains power directly supplies power to the rear-end load through the internal bypass channel of the uninterruptible power supply (UPS), and at the same time charges the battery through the rectification unit to ensure that the battery has sufficient power. The UPS internally monitors the status of the mains voltage. When the mains fails, the rectification unit stops working and the inversion unit starts. The battery provides direct current for the inversion unit, which is converted into alternating current for the rear-end after passing through the inversion unit. At the same time, the diesel generator is started and completed before the mains is restored and the battery runs out of power to supply power to the rear-end equipment. The device composed of the rectification unit, the battery, the inversion unit, and the 220VAC bypass is the standby uninterruptible power supply UPS.

[0030] However, when switching from mains power supply to battery-inversion power supply, there is a certain switching time, usually between a few milliseconds and dozens of milliseconds. During this short switching time, the server may lose important data in the cache due to momentary power failure, affecting the normal operation of the service, resulting in serious consequences such as equipment failure, data loss, or system crash.

[0031] (3) The power backup method of the centralized power supply cabinet power pool is as Figure 3 As shown in the figure, the part connected after the inversion unit is the centralized power supply cabinet power pool, which is composed of multiple power supply units (PSUs) connected in parallel. The important power devices of a single PSU include a power factor correction (PFC) unit and a DC-DC unit; among them, the function of the power factor correction PFC unit is power factor correction and rectification, rectifying the input alternating current into direct current, and then converting the voltage into the voltage required by each node at the rear-end through the DC-DC unit to supply power to each load.

[0032] However, when the PSU in the centralized power supply cabinet power pool is used in combination with an online UPS, the function of the PFC unit in the PSU overlaps with the function of the rectification unit in the UPS. When the mains supplies power to the cabinet, it needs to go through the process of rectification - inversion - rectification. During normal mains direct supply, the loss is large, the heat generation is large, and an additional heat dissipation device is required to solve the heat problem, resulting in a relatively high usage cost.

[0033] To enable those skilled in the art of this technology to better understand the solution of this application, the following further details the application in combination with the accompanying drawings and specific implementation manners.

[0034] The embodiment of this application provides a power backup method for a centralized power supply cabinet. In combination with the execution process of the power backup method for the centralized power supply cabinet, the method is described in detail.

[0035] Among them, the centrally powered cabinet is connected to the output end of the power cabinet. The input end of the power cabinet is connected to the first power grid, and an energy storage component is arranged inside the power cabinet.

[0036] The structural schematic diagrams of the centrally powered cabinet and the power cabinet are as Figure 4 shown. The grid mains electricity is connected to the power cabinet. The power cabinet includes a rectification unit, a power cabinet control unit, a storage battery, a battery management power supply, and a DC-DC buck conversion unit. The alternating current of the low-voltage distribution network is rectified and stepped down by the power cabinet to supply power to the centrally powered cabinet. The centrally powered cabinet is connected to the power supply busbar BUSBAR of the computing cabinet through inter-cabinet cables, and the centrally powered cabinet uniformly draws power from the BUSBAR through the industry standard Bar-Clip.

[0037] Among them, the functions of the rectification unit include power factor correction, reducing reactive power transmission, reducing line losses, ensuring the power conversion efficiency of the power cabinet, and rectifying the alternating current at the input end into direct current.

[0038] The control unit functions for external communication to monitor the power grid status in real time; for internal communication, it connects to the rectification unit to manage the working status of the rectification unit in real time, drives the power components of the internal rectification unit to work, connects to the battery management unit to monitor the status of the storage battery in real time, and judges and manages the power supply mode of the power cabinet.

[0039] The DC-DC buck conversion unit functions to step down the DC voltage after rectifying the AC input and convert it into the voltage used by the IT equipment at the load end.

[0040] The battery management unit and the storage battery. The functions of the battery unit are to monitor the health status and the battery power of the storage battery. At the same time, the battery management unit includes the charging circuit of the storage battery, which converts the rectified direct current into the voltage required for charging the storage battery to charge the battery; the discharging circuit of the storage battery, which stabilizes the voltage of the storage battery to supply power to the centrally powered cabinet.

[0041] The battery power of the storage battery satisfies the sum of the power consumption of the centrally powered cabinet from when the diesel generator has not started to when it starts and the power consumption of the centrally powered cabinet during the peak power consumption period.

[0042] The structure of the rectification unit is as Figure 5 shown. L 1 represents an inductor, AC_IN+ and AC_IN- represent the positive and negative terminals of the AC input side, Q 1 -Q 4 represents the switching element in the rectification unit, G 1 -G 4 represents the driving pin of the switching element, C 1Indicates the output filter capacitor, DC_OUT+, DC_OUT- indicates the positive and negative terminals of the DC output side. The rectifier unit uses a totem pole bridgeless PFC topology. The control unit changes the switching state of the switch element by controlling the level of the switch element drive pin to support the operation of the rectifier unit. Its characteristics are high efficiency, reducing two diodes compared to traditional rectifier bridge technology, reducing conduction losses, and improving conversion efficiency; the number of power components is less than that of traditional topologies, saving space and facilitating the improvement of power density.

[0043] The structure of the DC-DC step-down conversion unit is as follows Figure 6 As shown, DC_IN+, DC_IN- represent the positive and negative terminals of the DC input, Q 5 -Q 8 Represents the DC-DC step-down conversion unit switch element, L 2 Indicates the primary leakage inductance of the transformer, L 3 Represents the transformer excitation inductance, C 2 Represents the resonant capacitance, G 5 -G 8 Indicates the switch element drive pin, D 1 -D 4 Represents the output rectifier bridge, C 3 Represents the load-side filter capacitor. The DC-DC buck converter unit uses a full-bridge LLC topology. The control unit changes the switch state of the switch element by controlling the level of the switch element drive pin to support the operation of the DC-DC buck converter unit. It is characterized by high conversion efficiency. The switch tube is turned on and off at zero voltage or zero current, which greatly reduces switching losses and ensures high conversion efficiency. The resonant network is combined with the application of wide-bandgap semiconductor switch elements to achieve high-frequency operation, effectively reducing the volume of transformers and filter capacitors, and ensuring the power density of buck conversion.

[0044] The control logic of the power cabinet control unit is as follows: Figure 7 As shown, the power cabinet control unit is connected through G 1 _Dri-G 8 _Dri signal is connected to the switching element Q 1 -Q 8 Pin G 1 -G 8 Drive the switching elements of the rectifier unit and the DC-DC buck unit to work; connect to the network interface through the network bus RJ45 Tx± and RJ45 Rx±, connect to the external Internet, and monitor the status of the low-voltage distribution network, medium-voltage distribution network and high-voltage transmission network in real time; monitor the battery voltage through the Vbat_sense signal to obtain the battery power and health status; control the charging and discharging status of the power cabinet battery management unit through the BAT_charge and BAT_discharge signals.

[0045] The backup power supply method for a centralized power supply cabinet is as follows Figure 8 As shown, in step S801, obtain the current power of the energy storage component, the current power consumption time period, the output voltage of the first power grid, the output voltage of the second power grid, and the output voltage of the third power grid.

[0046] Among them, the energy storage component is Figure 4 the storage battery in

[0047] Optionally, in some embodiments, before obtaining the current power of the energy storage component, the current power consumption time period, the output voltage of the first power grid, the output voltage of the second power grid, and the output voltage of the third power grid, it further includes: determining whether the power supply cabinet is started for the first time; if the power supply cabinet is started for the first time, control the power supply cabinet to enter the standby state.

[0048] Among them, the first start is when the power supply cabinet is first connected to the power grid or starts for the first time after being reset, the system will make this judgment, and the normal start of each component of the power supply cabinet during the first start. The standby state can be understood as that the power supply cabinet is already ready to be quickly put into use when needed, but no specific power distribution or conversion tasks are currently being performed.

[0049] It can be understood that the power supply cabinet needs to be in the standby state before obtaining the current power of the energy storage component, the current power consumption time period, the output voltage of the first power grid, the output voltage of the second power grid, and the output voltage of the third power grid.

[0050] Through the above technical solution, entering the standby state during the first start can avoid potential failures or safety problems caused by incomplete initialization of components, and ensure the safe and stable start of the power supply cabinet.

[0051] Optionally, in some embodiments, after obtaining the current power of the energy storage component, the current power consumption time period, the output voltage of the first power grid, the output voltage of the second power grid, and the output voltage of the third power grid, it further includes: determining whether the output voltage of the first power grid is within the first preset voltage range and whether the current power is less than the first preset power; if the output voltage of the first power grid is within the first preset voltage range and the current power is less than the first preset power, charge the energy storage component through the first power grid until the energy storage component reaches the first preset power.

[0052] Among them, in some embodiments, the first preset power is the sum of the second preset power and the power required for the centralized power supply cabinet during the preset peak power consumption time period; the second preset power is the power required for the centralized power supply cabinet from when the power supply device is not started to when the power supply device starts and is completed.

[0053] In the embodiments of the present application, the power supply device is a diesel generator. The preset peak power consumption period is usually closely related to the local power demand and supply situation. The peak power consumption periods in different regions, different seasons, and different power companies may vary. The power cabinet of the present application can obtain the preset peak power consumption period by connecting to the Internet.

[0054] It can be understood that the second preset power is the power required for the centralized power supply cabinet during the process from the diesel generator not starting to starting and completing. The first preset power is the power required for the centralized power supply cabinet during the process from the diesel generator not starting to starting and completing + the power required for the centralized power supply cabinet during the preset peak power consumption period.

[0055] Through the above technical solution, by subdividing the first preset power into the second preset power and the power required during peak power consumption, the system can manage energy more precisely. At the initial stage of starting the power supply device, ensure that there is enough power to support the starting and running of the power supply device to a stable state. During the peak power consumption period, an additional sufficient amount of power is reserved to meet the high-load demand of the cabinet.

[0056] Among them, in some embodiments, the first preset voltage range is determined by the output voltage of the first power grid, the second preset voltage range is determined by the output voltage of the second power grid, and the third preset voltage range is determined by the output voltage of the third power grid; among them, the output voltage of the first power grid is lower than the output voltage of the second power grid; the output voltage of the second power grid is lower than the output voltage of the third power grid.

[0057] In the embodiments of the present application, the first preset voltage range can be -10% of the nominal voltage to +7% of the nominal voltage, the second preset voltage range is -7% of the nominal voltage to +7% of the nominal voltage, the second preset voltage range is -3% of the nominal voltage to +10% of the nominal voltage. The output voltage of the low-voltage distribution network is less than the output voltage of the medium-voltage distribution network, and the output voltage of the medium-voltage distribution network is less than the output voltage of the high-voltage transmission network.

[0058] Through the above technical solution, since power grids at different levels usually have different output voltages, different voltage ranges are set respectively to ensure that the system can adapt to and interact with the power grid safely and effectively.

[0059] Specifically, after the power cabinet is connected to the commercial power supply, it enters the standby state. After entering the standby state, it starts to judge whether the output voltage of the first power grid is normal and whether the current power of the energy storage component is less than the first preset power, that is, to judge whether the output voltage of the low-voltage distribution network is within the first preset voltage range and whether the current power of the battery is less than the first preset power. If the output voltage of the low-voltage distribution network is within the first preset voltage range, but the current power of the battery is less than the first preset power, the battery will continue to be charged through the low-voltage distribution network - rectifier unit - battery management unit until the current power of the battery reaches the first preset power.

[0060] For example, assume that the output voltage of the low-voltage distribution network is actually 200V, within the first preset voltage range, the first preset power is 50%, but the current power of the battery is 30% (less than 50%). Based on these conditions, the power cabinet will continue to charge the battery through the low-voltage distribution network - rectifier unit - battery management unit until the current power of the battery reaches 50%.

[0061] Through the above technical solution, when the grid voltage is stable and the energy storage component has insufficient power, the power of the grid is used for charging, improving the energy utilization efficiency and protecting the energy storage component. By setting a reasonable preset power, the energy storage component is prevented from being damaged due to overcharging, and its service life is extended.

[0062] Step S802, if the current power is greater than the first preset power, then based on the current power consumption time period, the output voltage of the first power grid, the output voltage of the second power grid, and the output voltage of the third power grid, judge whether the power cabinet meets the preset power supply condition for backup power.

[0063] It should be understood that if the current power of the battery is greater than the first preset power, that is, the current power is greater than the sum of the power required for the centralized power supply cabinet during the process from the diesel generator not starting to starting up and the power required for the centralized power supply cabinet during the preset peak power consumption time period, then further judge whether the power cabinet meets the preset power supply condition for backup power according to the output voltages of the low-voltage distribution network, the medium-voltage distribution network, and the high-voltage transmission network.

[0064] Further, in some embodiments, based on the current power consumption time period, the output voltage of the first power transmission network, the output voltage of the second power transmission network, and the output voltage of the third power transmission network, it is determined whether the power supply cabinet meets the preset backup power supply condition, including: determining whether the output voltage of the first power transmission network is within the first preset voltage range, or whether the output voltage of the second power transmission network is within the second preset voltage range, or whether the output voltage of the third power transmission network is within the third preset voltage range; if the output voltage of the first power transmission network is not within the first preset voltage range, or the output voltage of the second power transmission network is not within the second preset voltage range, or the output voltage of the third power transmission network is not within the third preset voltage range, it is determined that the power supply cabinet meets the preset backup power supply condition, otherwise, it is determined whether the current power consumption time period is the preset peak power consumption time period; if the current power consumption time period is the preset peak power consumption time period, it is determined that the power supply cabinet meets the preset backup power supply condition.

[0065] It should be understood that when the current battery power is greater than the sum of the power required by the centralized power supply cabinet during the process from the diesel generator not starting to starting up and the power required by the centralized power supply cabinet during the preset peak power consumption time period, the output voltages of the low-voltage power distribution network, the medium-voltage power distribution network, and the high-voltage power transmission network are further judged.

[0066] If the output voltage of the low-voltage power distribution network is not within the first preset voltage range, or the output voltage of the medium-voltage power distribution network is not within the second preset voltage range, or the output voltage of the high-voltage power transmission network is not within the third preset voltage range, it is determined that the power supply cabinet meets the preset backup power supply condition. At this time, the battery is started to discharge to supply power to the centralized power supply cabinet at the rear end.

[0067] If the output voltage of the first power transmission network is within the first preset voltage range, the output voltage of the second power transmission network is within the second preset voltage range, and the output voltage of the third power transmission network is within the third preset voltage range, it is further determined whether the current power consumption time period is the preset peak power consumption time period.

[0068] If the current power consumption time period is the preset peak power consumption time period, it is determined that the power supply cabinet meets the preset backup power supply condition. At this time, the DC-DC unit is turned off, and the battery is started to supply power to the centralized power supply cabinet at the rear end.

[0069] As an example, it can be: the nominal voltage of the low-voltage power distribution network: 220V; the nominal voltage of the medium-voltage power distribution network: 6kV; the nominal voltage of the high-voltage power transmission network: 110kV, then the first preset voltage range of the low-voltage power distribution network: 198V to 235.4V, the second preset voltage range of the medium-voltage power distribution network: 5.46kV to 6.6kV, and the third preset voltage range of the high-voltage power transmission network: 99kV to 121kV.

[0070] Assume that the current battery charge is 80%, which is sufficient to support the power supply demand during the process from the diesel generator not starting to starting up and the additional demand during the peak electricity consumption period. Assume that the peak electricity consumption period is from 8:00 am to 10:00 am and from 6:00 pm to 9:00 pm every day.

[0071] On a certain working day, the current time is 9:00 am. The power supply cabinet is connected to the mains power and enters the standby state. At this time, the system starts a series of judgments:

[0072] The output voltage of the low-voltage distribution network: 210V, the output voltage of the medium-voltage distribution network: 5.8kV, the output voltage of the high-voltage transmission network: 105kV. The output voltages of all power grids are within the corresponding preset voltage ranges. And since the current time is in the peak electricity consumption period, the system determines that the power supply cabinet meets the preset backup power supply conditions, then starts the battery to discharge and supply power to the centralized power supply cabinet at the back end. At this time, since the battery power supply has been started, the DC-DC unit is turned off to avoid unnecessary energy consumption.

[0073] Through the above technical solution, when the grid voltage is unstable, the system can quickly identify and enable the battery to ensure the continuous power supply of the battery, thereby improving the power supply reliability. During the peak electricity consumption period, by enabling the battery to reduce the direct power consumption from the grid, it helps to reduce the electricity cost and optimize the energy utilization.

[0074] Step S803, if the power supply cabinet meets the preset backup power supply conditions, then supply power to the centralized power supply cabinet through the energy storage component.

[0075] Optionally, in some embodiments, the input port of the power supply cabinet is also connected to a power supply device. After supplying power to the centralized power supply cabinet through the energy storage component, it further includes: judging whether the output voltage of the first power transmission network is within the first preset voltage range; if the output voltage of the first power transmission network is not within the first preset voltage range, then obtaining the real-time power of the energy storage component; if the real-time power drops to the second preset power, then controlling the power supply device to start, so that after the power supply device starts, supply power to the centralized power supply cabinet through the power supply cabinet.

[0076] It can be understood that after the power supply cabinet meets the preset backup power supply conditions and supplies power to the centralized power supply cabinet through the battery, if the output voltage of the low-voltage distribution network is in an abnormal state, that is, the output voltage of the low-voltage distribution network is not within the first preset voltage range, then obtain the real-time power of the battery. If the real-time power of the battery is less than the power required by the centralized power supply cabinet during the process from the diesel generator not starting to starting up, then use the battery to discharge to supply power to the centralized power supply cabinet.

[0077] When the real-time power drops to the same as the power required by the centralized power supply cabinet during the process from the diesel generator not starting to starting up, the diesel generator is controlled to start to supply power to the rectifier unit to ensure that the power supply cabinet supplies power to the centralized power supply cabinet normally.

[0078] It should be noted that in the step of "whether the output voltage of the first power grid is within the first preset voltage range; if the output voltage of the first power grid is not within the first preset voltage range, the real-time power of the energy storage component is obtained; if the real-time power drops to the second preset power, the power supply device is controlled to start, so that after the power supply device starts, the centralized power supply cabinet is powered through the power supply cabinet", in the embodiments of the present application, not only can the steps of "obtaining the real-time power of the energy storage component; if the real-time power drops to the second preset power, the power supply device is controlled to start, so that after the power supply device starts, the centralized power supply cabinet is powered through the power supply cabinet" be executed when the output voltage of the first power grid is not within the first preset voltage range, but also these steps can be executed when the output voltage of the second power grid is not within the second preset voltage range, or the output voltage of the third power grid is not within the third preset voltage range.

[0079] As an example, it can be:

[0080] At a certain time point, due to a fault in the low-voltage distribution network, its output voltage drops to 180V, which is not within the first preset voltage range. The power supply cabinet detects this abnormality and immediately starts the battery to supply power to the centralized power supply cabinet.

[0081] During the process of the battery supplying power to the centralized power supply cabinet, the power supply cabinet continuously monitors the real-time power of the battery.

[0082] Assume that the initial power of the battery is 80%. As the power supply progresses, the power gradually decreases.

[0083] When the real-time power of the battery drops to 30%, the power supply cabinet still uses the battery to supply power. If the power of the battery is exactly equal to 15% power (i.e., the second preset power), the diesel generator will be successfully started by the power supply cabinet, and the power supply cabinet will be powered through the rectifier unit, thereby ensuring the normal operation of the centralized power supply cabinet. At the same time, the battery enters the charging mode for subsequent use.

[0084] Through the above technical solutions, when the grid voltage is stable, the grid power is preferentially used to charge the energy storage component. When the grid voltage is unstable, the system will obtain the real-time power of the energy storage component to evaluate its remaining power supply capacity, so as to switch to the power supply device in time, and when the energy storage component has sufficient power, reduce the use of the power supply device, improve the reliability and stability of the power supply, ensure the continuous operation of the power supply, optimize the energy utilization, reduce the power consumption cost and environmental pollution, and can cope with the changes of different grid states and power consumption demands.

[0085] To enable those skilled in the art to further understand the backup power method of the centralized power supply cabinet in the embodiments of the present application, the following will be elaborated in detail with specific embodiments, as Figure 9 shown.

[0086] After the power supply cabinet is connected to the low-voltage distribution network, it enters the standby state.

[0087] After entering the standby state, it starts to judge whether the input voltage at the input end of the power supply cabinet is normal;

[0088] If the input voltage is abnormal, it judges whether the power supply cabinet is starting for the first time. If the power supply cabinet is starting for the first time, the power supply cabinet returns to the standby state and judges whether the input voltage is normal;

[0089] If the input voltage is normal, the rectification unit is started;

[0090] After the rectification unit is started, the power supply cabinet control unit obtains the current power of the storage battery through the Vbat_sense signal;

[0091] Judge whether the current power meets the second preset power (that is, whether the current power can support the required power of the centralized power supply cabinet from when the diesel generator is not started to when it is started);

[0092] If it does not meet the second preset power, the rectification unit is kept started, and the power supply cabinet returns to the standby state until the power of the storage battery meets the second preset power. When the battery power meets the second preset power, the DC-DC buck conversion unit is started to output direct current to supply power to the centralized power supply cabinet.

[0093] Subsequently, it continues to judge whether the current power of the storage battery meets the first preset power. If the current power does not meet the first preset power (the required power of the centralized power supply cabinet during the process from when the diesel generator is not started to when it is started + the required power of the centralized power supply cabinet during the preset peak electricity consumption period), it continues to charge the storage battery through the mains-rectification unit-battery management unit until the charging ends after meeting the first preset power;

[0094] If the current power meets the first preset power, the power supply cabinet normally outputs direct current through the rectification unit and the DC-DC buck conversion unit to supply power to the centralized power supply cabinet, and at the same time obtains the output voltages of the high-voltage power transmission network, the medium-voltage distribution network, and the low-voltage distribution network through network signals. If the state of the power grid is abnormal, the battery discharge circuit of the storage battery is started to supply power to the centralized power supply cabinet;

[0095] Subsequently, the power supply cabinet connects to the Internet and judges whether it is peak-time electricity consumption according to the urban electricity peak-valley period time;

[0096] When using electricity during valley hours, the discharge circuit of the battery is turned off, and the input voltage is judged again. After it is normal, the rectification unit is started, and the centralized power supply cabinet is powered by the mains - rectification unit - DC - DC buck conversion unit. If the input voltage is abnormal and it is judged that it is not the first startup, the DC - DC buck conversion unit stops working and the battery discharge is started;

[0097] When using electricity during peak hours, the operation of the DC - DC buck conversion unit is stopped, and the centralized power supply cabinet is powered by battery discharge. Then, the input voltage state at the input end of the power cabinet is continuously judged. If the input voltage is normal, the power grid state and whether it is the peak - hour electricity consumption period are judged cyclically;

[0098] If the input voltage is abnormal, the real - time power of the battery is read, and it is judged whether the real - time power reaches the second preset power.

[0099] If the real - time power does not reach the second preset power, the battery discharge is preferentially used to power the centralized power supply cabinet. If it reaches the second preset power, the diesel generator is started to power the rectification unit, that is, the diesel generator powers the power cabinet to ensure normal power consumption of the backend centralized power supply cabinet.

[0100] As another expandable embodiment, limited by the current battery energy density, it is difficult for the battery to meet the power supply of the computing unit through the battery during all peak - hour electricity periods under the same volume size of the industry standard computing node. With the continuous development of the battery industry and the continuous improvement of the battery energy density, arranging the backup power module beside the computing unit will become a solution with lower path loss and higher efficiency. As Figure 10 shown, backup power module 1 - backup power module x are arranged in the middle position between every two computing units. The function of the backup power module supply is the same as that of the power cabinet in Figure 5 , further reducing the distance from the DC output to the power - consuming IT equipment and improving the power supply and backup power efficiency. With the application of edge servers, this embodiment can be applied to the usage scenarios of distributed edge computing at the same time.

[0101] In summary, based on the analysis of the above - mentioned specific embodiments, the present application can achieve the following beneficial effects:

[0102] (1) Compared with the online uninterruptible power supply (UPS) backup power, after the mains input, it needs to go through multiple links such as rectification and inversion to output to the load, and a certain loss will be generated in each energy conversion. The present application only has one - stage rectification circuit and one - stage buck circuit, with fewer conversion times and higher efficiency.

[0103] (2) Compared with the standby uninterruptible power supply (UPS), in the event of a power grid anomaly, the battery power supply of this application is in the Standby state. When the input end malfunctions, the battery output can take over at any time, with a short switching time and no voltage jump during switching, providing high reliability for IT devices sensitive to input voltage.

[0104] (3) Compared with the traditional UPS backup power supply system, the power cabinet of this application supplies power to the backend devices through the commercial power during the low electricity consumption period, while charging the battery; during the peak electricity consumption period, it discharges the battery to supply power to the backend IT devices. While ensuring power supply reliability, it saves the enterprise's electricity cost, reduces the power supply pressure on the power grid, gives full play to the function of the battery, and improves the overall power supply reliability.

[0105] Through the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by means of software plus a necessary general hardware platform. Of course, it can also be implemented by hardware, but in many cases, the former is a better implementation method.

[0106] According to the backup power supply method of the centralized power supply cabinet proposed in the embodiments of this application, when the current power of the energy storage component is greater than the first preset power, based on the current power consumption period, the output voltage of the first power grid, the output voltage of the second power grid, and the output voltage of the third power grid, it is determined whether the power cabinet meets the preset backup power supply conditions; if the power cabinet meets the preset backup power supply conditions, the energy storage component is used to supply power to the centralized power supply cabinet. It can solve the technical problems of low conversion efficiency of the online uninterruptible power supply used in the existing data center, long switching time and low reliability of the standby uninterruptible power supply, large heat generation of the power supply pool of the centralized power supply cabinet, and high cost, and achieve the technical effects of reducing the electricity cost of the centralized power supply cabinet, reducing the electricity consumption during peak electricity consumption periods, increasing the electricity consumption during low electricity consumption periods, alleviating the difficulties of power supply and storage of the power grid, and having high conversion efficiency, high reliability, saving the enterprise's electricity cost, reducing the power supply pressure on the power grid, and giving full play to the function of the battery.

[0107] The embodiments of this application also provide a backup power supply device for a centralized power supply cabinet, as Figure 11 shown. The centralized power supply cabinet is connected to the output end of the power cabinet. The input end of the power cabinet is connected to the first power grid. An energy storage component is provided in the power cabinet. Among them, the device includes: an acquisition module 100, a judgment module 200, and a power supply module 300.

[0108] Among them, the acquisition module 100 is used to acquire the current power of the energy storage component, the current power consumption time period, the output voltage of the first power grid, the output voltage of the second power grid, and the output voltage of the third power grid; the judgment module 200 is used to, if the current power is greater than the first preset power, judge whether the power supply cabinet meets the preset backup power supply condition based on the output voltages of the current power consumption time period, the output voltage of the first power grid, the output voltage of the second power grid, and the output voltage of the third power grid; the power supply module 300 is used to, if the power supply cabinet meets the preset backup power supply condition, supply power to the centralized power supply cabinet through the energy storage component.

[0109] Optionally, in some embodiments, the judgment module 200 is further used to: judge whether the output voltage of the first power grid is within the first preset voltage range, or whether the output voltage of the second power grid is within the second preset voltage range, or whether the output voltage of the third power grid is within the third preset voltage range; if the output voltage of the first power grid is not within the first preset voltage range, or the output voltage of the second power grid is not within the second preset voltage range, or the output voltage of the third power grid is not within the third preset voltage range, it is determined that the power supply cabinet meets the preset backup power supply condition, otherwise, judge whether the current power consumption time period is the preset peak power consumption time period; if the current power consumption time period is the preset peak power consumption time period, it is determined that the power supply cabinet meets the preset backup power supply condition.

[0110] Optionally, in some embodiments, the first preset voltage range is determined by the output voltage of the first power grid, the second preset voltage range is determined by the output voltage of the second power grid, and the third preset voltage range is determined by the output voltage of the third power grid; among them, the output voltage of the first power grid is lower than the output voltage of the second power grid; the output voltage of the second power grid is lower than the output voltage of the third power grid.

[0111] Optionally, in some embodiments, after acquiring the current power of the energy storage component, the current power consumption time period, the output voltage of the first power grid, the output voltage of the second power grid, and the output voltage of the third power grid, the acquisition module 100 is further used to: judge whether the output voltage of the first power grid is within the first preset voltage range and whether the current power is less than the first preset power; if the output voltage of the first power grid is within the first preset voltage range and the current power is less than the first preset power, charge the energy storage component through the first power grid until the energy storage component reaches the first preset power.

[0112] Optionally, in some embodiments, the input port of the power cabinet is further connected to a power supply device. After the energy storage component supplies power to the centralized power supply cabinet, the power supply module 300 is further configured to: determine whether the output voltage of the first power grid is within a first preset voltage range; if the output voltage of the first power grid is not within the first preset voltage range, obtain the real-time power of the energy storage component; if the real-time power drops to a second preset power, control the power supply device to start, so that after the power supply device starts, the centralized power supply cabinet is powered by the power cabinet.

[0113] Optionally, in some embodiments, the first preset power is the sum of the second preset power and the power required by the centralized power supply cabinet during a preset peak power consumption period; the second preset power is the power required by the centralized power supply cabinet during the process from the power supply device not starting to the power supply device starting and completing.

[0114] Optionally, in some embodiments, before obtaining the current power of the energy storage component, the current power consumption period, the output voltage of the first power grid, the output voltage of the second power grid, and the output voltage of the third power grid, the obtaining module 100 is further configured to: determine whether the power cabinet is started for the first time; if the power cabinet is started for the first time, control the power cabinet to enter the standby state.

[0115] It should be noted that the descriptions of the features in the corresponding embodiments of the backup power device of the centralized power supply cabinet can refer to the relevant descriptions of the corresponding embodiments of the backup power method of the centralized power supply cabinet, and will not be elaborated here one by one.

[0116] An embodiment of the present application further provides an electronic device. Figure 12 The following is a schematic structural diagram of the electronic device provided by the embodiment of the present application. The electronic device may include:

[0117] A memory 1201, a processor 1202, and a computer program stored on the memory 1201 and executable on the processor 1202.

[0118] When the processor 1202 executes the program, it implements the multi-device communication method provided in the above embodiments.

[0119] Further, the electronic device further includes:

[0120] A communication interface 1203 for communication between the memory 1201 and the processor 1202.

[0121] The memory 1201 is used to store a computer program executable on the processor 1202.

[0122] The memory 1201 may include a high-speed RAM memory, and may also include a non-volatile memory, such as at least one disk memory.

[0123] If the memory 1201, the processor 1202, and the communication interface 1203 are implemented independently, the communication interface 1203, the memory 1201, and the processor 1202 can be interconnected via a bus and communicate with each other. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 12 only a thick line is used in the figure, but it does not mean that there is only one bus or one type of bus.

[0124] Optionally, in a specific implementation, if the memory 1201, the processor 1202, and the communication interface 1203 are integrated on a single chip, the memory 1201, the processor 1202, and the communication interface 1203 can communicate with each other via an internal interface.

[0125] The processor 1202 may be a Central Processing Unit (CPU), or an Application Specific Integrated Circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application.

[0126] Embodiments of the present application also provide a computer-readable storage medium storing a computer program, where the computer program is configured to execute the steps in any of the above-described embodiments of the backup power supply method for a centralized power supply cabinet when running.

[0127] In an exemplary embodiment, the above computer-readable storage medium may include, but is not limited to: various media capable of storing 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 disc.

[0128] Those skilled in the art may further realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be implemented by electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described according to functions in the above description. Whether these functions are executed in a hardware or software manner depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of this application.

[0129] The above has introduced in detail a power backup method for a centralized power supply cabinet provided by this application. Specific examples are used herein to elaborate on the principle and implementation manner of this application. The description of the above embodiments is only used to help understand the method and its core idea of this application. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of this application, several improvements and modifications can still be made to this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A power backup method for a centralized power supply cabinet, characterized in that: The centralized power supply cabinet is connected to the output end of the power cabinet, the input end of the power cabinet is connected to the first power transmission network, and an energy storage component is arranged in the power cabinet, wherein the method comprises: Acquire the current power of the energy storage component, the current power consumption time period, the output voltage of the first transmission network, the output voltage of the second transmission network, and the output voltage of the third transmission network; If the current power quantity is greater than the first preset power quantity, judging whether the power supply cabinet meets the preset backup power supply condition based on the output voltage of the current power consumption time period, the output voltage of the first transmission network, the output voltage of the second transmission network and the output voltage of the third transmission network; If the power supply cabinet meets the preset backup power supply condition, the centralized power supply cabinet is powered by the energy storage component.

2. The method according to claim 1, characterized in that The determining whether the power supply cabinet meets a preset backup power supply condition based on the current power consumption time period, the output voltage of the first transmission network, the output voltage of the second transmission network, and the output voltage of the third transmission network includes: Determining whether the output voltage of the first transmission network is within a first preset voltage range, or whether the output voltage of the second transmission network is within a second preset voltage range, or whether the output voltage of the third transmission network is within a third preset voltage range; If the output voltage of the first transmission network is not within the first preset voltage range, or the output voltage of the second transmission network is not within the second preset voltage range, or the output voltage of the third transmission network is not within the third preset voltage range, it is determined that the power supply cabinet meets the preset backup power supply condition, otherwise, it is determined whether the current power consumption time period is a preset peak power consumption time period; If the current power consumption time period is the preset peak power consumption time period, it is determined that the power supply cabinet meets the preset backup power supply condition.

3. The method according to claim 2, characterized in that The first preset voltage interval is determined by the output voltage of the first transmission network, the second preset voltage interval is determined by the output voltage of the second transmission network, and the third preset voltage interval is determined by the output voltage of the third transmission network; The output voltage of the first transmission network is lower than the output voltage of the second transmission network; and the output voltage of the second transmission network is lower than the output voltage of the third transmission network.

4. The method according to claim 1, characterized in that: After obtaining the current power of the energy storage component, the current power consumption time period, the output voltage of the first transmission network, the output voltage of the second transmission network, and the output voltage of the third transmission network, the method further includes: Determining whether the output voltage of the first transmission network is within a first preset voltage range, and whether the current power is less than the first preset power; If the output voltage of the first transmission network is within the first preset voltage range and the current power level is less than the first preset power level, the energy storage component is charged through the first transmission network until the energy storage component reaches the first preset power level.

5. The method according to claim 1, characterized in that The input port of the power cabinet is also connected to a power supply device, and after the energy storage component supplies power to the centralized power supply cabinet, the device further includes: Determining whether the output voltage of the first transmission network is within the first preset voltage range; If the output voltage of the first transmission network is not within the first preset voltage range, obtaining the real-time power of the energy storage component; If the real-time power level drops to a second preset power level, the power supply device is controlled to start, so that after the power supply device is started, power is supplied to the centralized power supply cabinet through the power supply cabinet.

6. The method according to claim 5, characterized in that The first preset power is the sum of the second preset power and the power required by the centralized power supply cabinet during the preset peak power consumption period; The second preset power is the power required by the centralized power supply cabinet during the period from when the power supply device is not started to when the power supply device is started.

7. The method according to claim 1, characterized in that Before obtaining the current power of the energy storage component, the current power consumption time period, the output voltage of the first transmission network, the output voltage of the second transmission network, and the output voltage of the third transmission network, the method further includes: Determine whether the power supply cabinet is started for the first time; If the power supply cabinet is started for the first time, the power supply cabinet is controlled to enter a standby state.

8. A power backup device for a centralized power supply cabinet, characterized in that: The centralized power supply cabinet is connected to the output end of the power cabinet, the input end of the power cabinet is connected to the first power transmission network, and an energy storage component is arranged in the power cabinet, wherein the device comprises: An acquisition module, used to acquire the current power of the energy storage component, the current power consumption time period, the output voltage of the first transmission network, the output voltage of the second transmission network and the output voltage of the third transmission network; A judgment module, configured to judge whether the power supply cabinet meets a preset backup power supply condition based on the output voltage of the current power consumption time period, the output voltage of the first transmission network, the output voltage of the second transmission network, and the output voltage of the third transmission network if the current power supply is greater than a first preset power supply; A power supply module is used to supply power to the centralized power supply cabinet through the energy storage component if the power cabinet meets the preset backup power supply condition.

9. An electronic device, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the power backup method for a centralized power supply cabinet as described in any one of claims 1 to 7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: The program is executed by a processor to implement the power backup method for a centralized power supply cabinet as described in any one of claims 1 to 7.

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