CN111446718A - Power supply method, system, power supply device and storage medium - Google Patents

Power supply method, system, power supply device and storage medium Download PDF

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Publication number
CN111446718A
CN111446718A CN202010146819.4A CN202010146819A CN111446718A CN 111446718 A CN111446718 A CN 111446718A CN 202010146819 A CN202010146819 A CN 202010146819A CN 111446718 A CN111446718 A CN 111446718A
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CN
China
Prior art keywords
power
module
power supply
energy storage
supply module
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Granted
Application number
CN202010146819.4A
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Chinese (zh)
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CN111446718B (en
Inventor
刘造
姚益民
高俊恩
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XFusion Digital Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to CN202010146819.4A priority Critical patent/CN111446718B/en
Priority to CN202310018671.XA priority patent/CN116014706A/en
Publication of CN111446718A publication Critical patent/CN111446718A/en
Priority to PCT/CN2021/078702 priority patent/WO2021175215A1/en
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Publication of CN111446718B publication Critical patent/CN111446718B/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/04—Circuit arrangements for ac mains or ac distribution networks for connecting networks of the same frequency but supplied from different sources
    • H02J3/06—Controlling transfer of power between connected networks; Controlling sharing of load between connected networks
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/28—Arrangements for balancing of the load in a network by storage of energy
    • H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02B90/20—Smart grids as enabling technology in buildings sector
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/14—Energy storage units
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/12—Energy storage units, uninterruptible power supply [UPS] systems or standby or emergency generators, e.g. in the last power distribution stages
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems
    • Y04S20/248—UPS systems or standby or emergency generators

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

A power supply method, system, power supply device and storage medium are disclosed, belonging to the electronic technology field. The method is applied to a system comprising a power module, an energy storage module and a load, wherein the output end of the power module is connected with the charging end of the energy storage module, the output end of the power module and the discharging end of the energy storage module are both connected with the load, and the power module is connected with commercial power. And determining the power output by the power supply module in the process of supplying power to the load by the power supply module. If the power output by the power supply module is increased to be larger than the limited power from the limited power of the power supply module, the output voltage of the power supply module is controlled to be lower than the setting voltage of the energy storage module, the power supply module and the energy storage module supply power to the load, and the normal operation of the load is ensured. Therefore, when the power consumed by the load is overlarge due to the service peak value, reliable power supply can be realized through the combination of the power supply module and the energy storage module, and the service performance can be not influenced even at the service peak value.

Description

Power supply method, system, power supply device and storage medium
Technical Field
The present application relates to the field of electronic technologies, and in particular, to a power supply method, a power supply system, a power supply device, and a storage medium.
Background
Power supply reliability plays a crucial role in maintaining proper operation of the electronic device. For cabinets in a room, power supplies and loads are typically included. The power supply is connected with commercial power and can supply power for the load. The load includes a server, a switch, etc., and can provide corresponding services.
To ensure the utilization of the power supply, the power rating of the power supply is typically configured according to the power consumed by the load while providing typical traffic. In this case, when a traffic peak occurs, a power supply shortage phenomenon is likely to occur due to excessive power consumed by the load, resulting in power failure.
For this reason, a power capping mechanism is added. Specifically, when the power consumed by the load is greater than the rated power of the power supply, a power capping operation is performed to limit the power consumed by the load below the rated power of the power supply to ensure that power is not lost. However, since power is limited at the time of traffic peaks, traffic performance is affected.
Disclosure of Invention
The application provides a power supply method, a power supply system, power supply equipment, a storage medium and a program product, which can ensure that the service performance is not influenced when the service is at a peak value. The technical scheme is as follows:
in a first aspect, a power supply method is provided, which is applied to a system including a power module, an energy storage module and a load, wherein an output end of the power module is connected with a charging end of the energy storage module, an output end of the power module and a discharging end of the energy storage module are both connected with the load, and the power module is connected to a mains supply.
In the method, the power output by the power module is determined during the process that the power module supplies power to the load. And if the power output by the power supply module is increased to be larger than the limited power from the limited power of the power supply module, controlling the output voltage of the power supply module to be lower than the setting voltage of the energy storage module so as to supply power to the load by the power supply module and the energy storage module.
It should be noted that the commercial power is a power frequency ac power, which is a power resource extracted from a power network, and the commercial power is generally provided by a power company.
In addition, the limited power of the power module may be set in advance, and the limited power of the power module may be equal to the rated power of the power module or slightly less than the rated power of the power module, for example, the limited power of the power module may be 0.9 times of the rated power of the power module. The rated power of the power module refers to the effective power which can be continuously output by the power module, namely the maximum power which can be continuously and normally operated by the power module.
Moreover, when the output voltage of the power supply module is lower than the setting voltage of the energy storage module, the energy storage module is in a discharging state, and at the moment, the energy storage module can automatically share the part of the power consumed by the load, which exceeds the power supply capacity of the power supply module. That is to say, in the embodiment of the present application, by controlling the output voltage of the power supply module to be lower than the setting voltage of the energy storage module, it can be ensured that the part of the power consumed by the load, which exceeds the power supply capability of the power supply module, is automatically provided by the energy storage module.
In the application, when the power consumed by the load is overlarge due to a service peak value, reliable power supply is realized through the combination of the power supply module and the energy storage module, so that the service performance can be ensured not to be influenced even at the service peak value. And under the condition that the power supply module supplies power, the synchronous power supply of the energy storage module is also supported, so that the utilization rate of the energy storage module can be improved.
Alternatively, the above steps may be performed by a power supply module, and specifically may be performed by a power management system in the power supply module. Of course, the above steps may be performed by other separately arranged modules, for example, a management module may be separately arranged in the system. In practical application, a suitable execution subject can be selected according to requirements, and the application is not limited to this.
In a possible implementation manner, a linkage power supply function may be set, where the linkage power supply function refers to a function that can supply power to a load in combination with the power supply module and the energy storage module. In this case, when the linkage power supply function is turned on and the power output by the power supply module rises from the limited power of the power supply module to a value higher than the limited power, the output voltage of the power supply module can be controlled to be lower than the setting voltage of the energy storage module. Therefore, under the condition that linkage power supply needs exist, combined power supply is achieved through the power module and the energy storage module.
It should be noted that the setting voltage of the energy storage module is a voltage at which the energy storage module can maintain a stable output continuously. If the voltage of the charging end of the energy storage module is greater than the setting voltage of the energy storage module, the energy storage module is in a charging state; and if the voltage of the charging end of the energy storage module is less than the setting voltage of the energy storage module, the energy storage module is in a discharging state.
Optionally, in this application, the power module may determine that the linkage power supply function is turned on when receiving the first indication information sent by the management module. After the power supply module determines that the linkage power supply function is started, the power supply module can control the output voltage of the power supply module to be lower than the setting voltage of the energy storage module when the power output by the power supply module is increased to be larger than the limited power from the limited power of the power supply module. At this time, one transmission end of the management module may be connected to the transmission end of the power module, and the other transmission end of the management module may be connected to the transmission end of the energy storage module.
In one case, the first indication information may be transmitted by the management module when the power consumed by the load in the next time period is predicted to be greater than the limit power of the power supply module.
In the application, if the management module predicts that the power consumed by the load in the next time period is greater than the limited power of the power module, it indicates that the power consumed by the load is likely to exceed the power supply capability of the power module, so that the linkage power supply function can be started at this time, and the power module and the energy storage module can be combined to supply power to the load in the following process.
Alternatively, the operation of the management module to predict the power consumed by the load in the next time period may be: predicting the power consumed by the load in the next time period according to the time range of the next time period through the power consumption relation of the load; or predicting the service of the load in the next time period according to the service operation relation of the load in the time range of the next time period, and predicting the power consumed by the load in the next time period according to the predicted service.
The power consumption relationship of the load is obtained by analyzing the power consumed by the load in the past in each time period. That is, a correlation database of the time period and the power consumed by the load may be established, and then a power consumption relationship of the load may be established through a learning algorithm according to the correlation database, and the power consumption relationship may predict the power consumed by the load in different time periods. The power consumption relationship may be a functional relationship, a neural network model, or the like.
In addition, the service operation relationship of the load is obtained by analyzing the service operated by the load in each time period in the past. That is, an association database of the time period and the service operated by the load may be established, and then a service operation relationship of the load may be established through a learning algorithm according to the association database, and the service operation relationship may predict the service operated by the load in different time periods. The service operation relationship may be a functional relationship, or may be a neural network model, etc.
In another case, the first indication information may be sent by the management module when the power output by the power supply module is greater than the limited power of the power supply module, and the linked power supply function is determined to be turned on according to the remaining capacity of the energy storage module and a second power, where the second power is a difference between the power output by the power supply module and the limited power of the power supply module.
Optionally, the determining, by the management module, whether to start the operation of the linkage power supply function according to the remaining capacity and the second power of the energy storage module may be: and if the numerical value obtained by dividing the residual capacity of the energy storage module by the preset time length is greater than or equal to the second power, starting the linkage power supply function.
In the present application, when the linked power supply function is not turned on, the power output by the power supply module is the power consumed by the load. If the power output by the power supply module is greater than the limited power of the power supply module, it indicates that the power consumed by the load exceeds the power supply capability of the power supply module, and therefore the limited power of the power supply module can be subtracted from the power output by the power supply module to obtain the second power. The second power is the portion of the power consumed by the load that exceeds the power supply capability of the power supply module.
And after the residual capacity of the energy storage module is divided by the preset time, the maximum output power of the energy storage module can be obtained. The maximum output power of the energy storage module is the maximum power which can be output by the energy storage module under the condition that power supply needs to be carried out for at least a preset time. Therefore, if the maximum output power of the energy storage module is greater than or equal to the second power, which indicates that the energy storage module is enough to share the part of the power consumed by the load and exceeding the power supply capacity of the power supply module at the moment, the linkage power supply function can be started at the moment.
Optionally, in this application, the management module itself may perform the opening of the linkage power supply function. After the linkage power supply function is started, the management module can control the output voltage of the power supply module to be lower than the setting voltage of the energy storage module when the power output by the power supply module is increased to be larger than the limited power from the limited power of the power supply module.
It should be noted that, the management module may have a plurality of ways of starting the linked power supply function. For example, the management module may predict the power consumed by the load during the next time period; and when the predicted power is larger than the limited power of the power module, starting the linkage power supply function. Or, the management module may determine whether to start the linkage power supply function according to the remaining capacity and the second power of the energy storage module when the power output by the power supply module is greater than the limited power of the power supply module.
In a possible implementation manner, the power module includes n power management systems and n power supplies, the n power management systems correspond to the n power supplies one by one, each of the n power management systems is used for managing the corresponding power supply, and n is an integer greater than or equal to 2; if the power output by the power supply module rises from the limited power of the power supply module to be higher than the limited power, the operation of controlling the output voltage of the power supply module to be lower than the setting voltage of the energy storage module can be as follows: for any power supply in the n power supplies, if the power output by the power supply rises from the first power to a value lower than the first power, the output voltage of the power supply is controlled to be lower than the setting voltage of the energy storage module, and the first power is obtained by dividing the limited power of the power supply module by n.
In this application, due to the load balancing characteristic of the power supply modules, the powers output by n power supplies in the power supply modules are the same or similar, so for any one of the n power supplies, if the power output by the power supply rises from below the first power to be greater than the first power, the power output by the power supply module should rise from below the limited power of the power supply module to be greater than the limited power, and therefore, the output voltage of the power supply can be controlled to be lower than the setting voltage of the energy storage module at this time, so that the energy storage module is in a discharging state.
In a possible implementation manner, after the output voltage of the power supply module is controlled to be lower than the setting voltage of the energy storage module, if the power output by the power supply module is reduced from the limit power to be lower than the limit power, the output voltage of the power supply module can also be controlled to be higher than the setting voltage of the energy storage module, so that the power supply module supplies power to the load and charges the energy storage module.
In the present application, if the power output by the power supply module drops from the defined power of the power supply module above or below the defined power, indicating that the power consumed by the load is likely to have changed from previously exceeding the power supply capability of the power supply module to being within the power supply capability of the power supply module, the load may be powered by the power supply module and the energy storage module charged. Therefore, the normal power supply for the load can be ensured, the capacity of the energy storage module can be improved, and the energy storage module can be conveniently and subsequently used for supplying power for the load.
In one possible implementation manner, the power supply module may control the output voltage of the power supply module to be lower than the setting voltage of the energy storage module when the power output by the power supply module rises from below the limit power of the power supply module to be greater than the limit power. In this case, the power module may further send third indication information to the management module, and the management module determines a power capping value according to the remaining capacity of the energy storage module and the limited power of the power module, and limits the power consumed by the load according to the power capping value.
In another possible implementation manner, the management module may control the output voltage of the power supply module to be lower than the setting voltage of the energy storage module when the power output by the power supply module rises from below the limit power of the power supply module to be greater than the limit power. In this case, the management module may further determine a power capping value according to the remaining capacity of the energy storage module and the limited power of the power supply module, and limit the power consumed by the load according to the power capping value.
In this application, the management module can set up the power capping value for the in-process of load power supply at power module and energy storage module, combines the power supply ability of energy storage module and power module, compares in the mechanism that only carries out the power capping according to power module's power supply ability among the correlation technique, and this application can improve the power supply ability of system for the system can the overfrequency operation, guarantees that the service property is not influenced.
Optionally, the operation of the management module determining the power capping value according to the remaining capacity of the energy storage module and the limited power of the power supply module may be: and adding a numerical value obtained by dividing the residual capacity of the energy storage module by the preset time length and the limited power of the power module to obtain a power capping value.
It should be noted that the maximum output power of the energy storage module can be obtained by dividing the remaining capacity of the energy storage module by the preset time. The maximum output power of the energy storage module is the maximum power which can be output by the energy storage module under the condition that power supply needs to be carried out for at least a preset time. Therefore, the maximum output power of the energy storage module is added with the limited power of the power supply module, so that the maximum power which can be output after the energy storage module and the power supply module are combined can be obtained, and the maximum power is used as a power capping value.
In a second aspect, a power supply system is provided, the system includes a power module and an energy storage module, an output end of the power module is connected with a charging end of the energy storage module, an output end of the power module and a discharging end of the energy storage module are both connected with a load, and the power module is connected to a mains supply;
the power supply module is used for determining the power output by the power supply module in the process that the power supply module supplies power to the load;
the power supply module is further used for controlling the output voltage of the power supply module to be lower than the setting voltage of the energy storage module when the power output by the power supply module is increased to be larger than the limit power from the limit power of the power supply module, so that the power supply module and the energy storage module supply power to the load.
Optionally, the power module is further configured to:
when the linkage power supply function is started and the power output by the power supply module rises to be greater than the limited power from the limited power of the power supply module, controlling the output voltage of the power supply module to be lower than the setting voltage of the energy storage module.
Optionally, the system further includes a management module, one transmission end of the management module is connected to the transmission end of the power module, and the other transmission end of the management module is connected to the transmission end of the energy storage module;
the management module is used for predicting the power consumed by the load in the next time period, and when the predicted power is greater than the limited power of the power supply module, the linkage power supply function is started; or, when the power output by the power supply module is greater than the limited power of the power supply module, determining whether to start the linkage power supply function according to the remaining capacity of the energy storage module and a second power, where the second power is a difference between the power output by the power supply module and the limited power of the power supply module;
the management module is further used for sending first indication information to the power supply module when the linkage power supply function is started;
and the power supply module is further used for determining that the linkage power supply function is started when the first indication information sent by the management module is received.
Optionally, the power module includes n power management systems and n power supplies, where the n power management systems correspond to the n power supplies one to one, each of the n power management systems is configured to manage a corresponding power supply, and n is an integer greater than or equal to 2;
each power management system in the n power management systems is used for controlling the output voltage of the managed power supply to be lower than the setting voltage of the energy storage module when the power output by the managed power supply rises from a first power to a value lower than the first power, and the first power is obtained by dividing the limited power of the power supply module by n.
Optionally, the power module is further configured to:
when the power output by the power supply module is reduced to be smaller than the limited power from the limited power, the output voltage of the power supply module is controlled to be higher than the setting voltage of the energy storage module, so that the power supply module supplies power to the load and charges the energy storage module.
Optionally, the system further includes a management module, one transmission end of the management module is connected to the transmission end of the power module, and the other transmission end of the management module is connected to the transmission end of the energy storage module;
the power supply module is used for sending third indication information to the management module when the power output by the power supply module is increased to be larger than the limited power from the limited power of the power supply module;
and the management module is used for determining a power capping value according to the residual capacity of the energy storage module and the limited power of the power supply module when receiving third indication information sent by the power supply module, and limiting the power consumed by the load according to the power capping value.
In a third aspect, a power supply apparatus is provided, the power supply apparatus comprising a power supply management system and a power supply, the power supply management system being configured to manage the power supply; the power management system comprises an interface card, a processor and a memory; the processor sends data or receives data through the interface card; the memory is used for storing a program for supporting the power management system to execute the power supply method provided by the first aspect, and storing data for implementing the power supply method provided by the first aspect. The processor is configured to execute programs stored in the memory.
In a fourth aspect, a computer-readable storage medium is provided, in which instructions are stored, and the instructions are loaded by a processor and execute the power supply method according to the first aspect.
In a fifth aspect, there is provided a computer program product comprising instructions to be loaded by a processor and to perform the power supply method of the first aspect.
The technical effects obtained by the second, third, fourth and fifth aspects are similar to the technical effects obtained by the corresponding technical means in the first aspect, and are not described herein again.
Drawings
FIG. 1 is a schematic diagram of a system provided by an embodiment of the present application;
FIG. 2 is a schematic diagram of a cabinet-level system provided by an embodiment of the present application;
fig. 3 is a flowchart of a power supply method provided in an embodiment of the present application;
FIG. 4 is a schematic diagram of another system provided by embodiments of the present application;
FIG. 5 is a schematic diagram of yet another system provided by an embodiment of the present application;
FIG. 6 is a power-time graph provided by an embodiment of the present application;
fig. 7 is a schematic diagram of a power supply system provided in an embodiment of the present application;
FIG. 8 is a schematic diagram of another power supply system provided by an embodiment of the present application;
fig. 9 is a schematic structural diagram of a power supply device provided in an embodiment of the present application;
fig. 10 is a schematic structural diagram of a management device according to an embodiment of the present application.
Detailed Description
To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
It should be understood that reference to "a plurality" in this application means two or more. In the description of the present application, "/" indicates an OR meaning, for example, A/B may indicate A or B; "and/or" herein is merely an association describing an associated object, and means that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, for the convenience of clearly describing the technical solutions of the present application, the terms "first", "second", and the like are used to distinguish the same items or similar items having substantially the same functions and actions. Those skilled in the art will appreciate that the terms "first," "second," etc. do not denote any order or quantity, nor do the terms "first," "second," etc. denote any order or importance.
Before explaining the embodiments of the present application in detail, the system architecture of the embodiments of the present application will be described.
Fig. 1 is a schematic diagram of a system according to an embodiment of the present application. Referring to fig. 1, the system includes: a power module 101, an energy storage module 102, a management module 103, and a load 104.
The power module 101 is connected to a mains supply, which is a power frequency alternating current and is a power resource extracted from a power pipe network. The utility power may be electrical power provided by an electric utility company. The output end of the power module 101 is connected to the charging end of the energy storage module 102, and both the output end of the power module 101 and the discharging end of the energy storage module 102 are connected to the load 104. One transmission end of the management module 103 is connected to the transmission end of the power module 101, and the other transmission end of the management module 103 is connected to the transmission end of the energy storage module 102.
For example, the output terminal of the power module 101 and the discharge terminal of the energy storage module 102 may be connected to the load 104 through a busbar. The busbar is made of conductive material and is a copper bar or an aluminum bar connected between the main switch and each shunt switch. The master switch is a switch connected between the output end of the power module 101 and the charging end of the energy storage module 102 and the busbar, and the power supply of the power module 101 and the energy storage module 102 to the busbar can be controlled through the master switch. The shunt switch is a switch connected between the busbar and the load 104, and the power supply of the busbar to the load 104 can be controlled through the shunt switch.
The power module 101 may convert ac power of the commercial power into dc low voltage power and provide the dc low voltage power to the load 104, for example, 220V (volt) ac power may be converted into 48V dc power and provided to the load 104. The power module 101 may also charge the energy storage module 102. The energy storage module 102 may also supply power to the load 104.
The management module 103 may monitor the operation conditions of the power module 101 and the energy storage module 102, specifically, may monitor the power output by the power module 101, the power output by the energy storage module 102, the remaining capacity of the energy storage module 102, and determine whether to start a linkage power supply function according to the monitored operation conditions, where the linkage power supply function refers to a function capable of supplying power to the load 104 in conjunction with the power module 101 and the energy storage module 102.
For example, the system may be a cabinet-level system as shown in FIG. 2. The power module 101, the energy storage module 102, the management module 103, and the load 104 are all located in the cabinet. The cabinet can further comprise a power supply frame, and the power supply frame comprises a power supply groove and a single board groove.
The power module 101 includes three power sources, which are located in power slots in the power frame. The energy storage module 102 may be a battery back up unit (BBU) including three batteries. The management module 103 may be a board, which is located in a board slot in the power frame, for example, the management module 103 may be a Remote Management Controller (RMC) board. The management module 103 and the power module 101 may communicate via a Controller Area Network (CAN) interface, and the management module 103 and the energy storage module 102 may also communicate via the CAN interface. The load 104 may include servers and switches.
Of course, the system may be any system having the power module 101 and the energy storage module 102, besides the cabinet-level system described above, and the embodiment of the present application is not limited thereto.
Fig. 3 is a flowchart of a power supply method according to an embodiment of the present application. The method may be applied to the system shown in fig. 1. Referring to fig. 3, the method may include the steps of:
step 301: the power supply module judges whether the linkage power supply function is started.
The linkage power supply function refers to a function capable of supplying power to a load in combination with the power supply module and the energy storage module. That is, under the condition that the linkage power supply function is started, the power module and the energy storage module can simultaneously supply power to the load; and under the condition that the linkage power supply function is not started, only the power supply module can supply power for the load. And, under the condition that linkage power supply function is not opened, power module still can be for energy storage module charging.
In addition, the power module can be connected to the mains supply, and the power module can convert alternating current of the mains supply into direct current low voltage electricity, for example, 220V alternating current electricity can be converted into 48V direct current electricity. The energy storage module is a device for storing electric energy, and the energy storage module can supply power to a load when the power supply module is powered off, for example, the energy storage module can be a battery, a super capacitor and the like. The load is a device consuming electric energy, for example, the load may be a switch, a server, or the like, which is not limited in this embodiment of the application.
Wherein, the linkage power supply function can be opened by the management module through various modes. The management module can send first indication information to the power module when the linkage power supply function is started so as to indicate that the linkage power supply function is started. The management module can send second indication information to the power module when the linkage power supply function is closed so as to indicate that the linkage power supply function is closed. That is, the power module may determine that the linkage power supply function is turned on when receiving the first indication information, and may determine that the linkage power supply function is not turned on when receiving the second indication information.
Specifically, the linkage power supply function can be manually started by a technician or automatically started by the management module. For example, the management module may turn on the coordinated power supply function in three possible ways as follows.
In a first possible mode, the management module starts the linkage power supply function when receiving a start instruction.
In this way, after the linkage power supply function is started, the management module can close the linkage power supply function when receiving a closing instruction.
It should be noted that the start instruction is used to start the linkage power supply function, and the close instruction is used to close the linkage power supply function. Both the open command and the close command may be entered into the management module by a technician. For example, the technician may trigger the open instruction or the close instruction on the management module through a click operation, a voice operation, a gesture operation, a body sensing operation, and the like.
For example, the management module may display a control interface, which may include control buttons. A technician can trigger an opening instruction by clicking the control button, and the management module can open the linkage power supply function after receiving the opening instruction. And after the management module starts the linkage power supply function, technicians can also trigger a closing instruction by clicking the control button, and after the management module receives the closing instruction, the linkage power supply function can be closed.
In a second possible approach, the management module predicts the power consumed by the load during the next time period; and if the predicted power is larger than the limited power of the power module, starting the linkage power supply function.
In this way, if the predicted power is less than or equal to the limited power of the power module, the management module does not start the linkage power supply function. And after the linkage power supply function is started, the management module can acquire the power consumed by the load in the current time period, and if the power consumed by the load in the current time period is less than or equal to the limited power of the power supply module and the management module predicts that the power consumed by the load in the next time period is less than or equal to the limited power of the power supply module, the management module closes the linkage power supply function.
It should be noted that the duration of the time period may be preset. For example, the duration of the time period may be set to 10 minutes, i.e. every 10 minutes is a time period.
In addition, the limited power of the power module may be set in advance, and the limited power of the power module may be the maximum power that the power module can output. The limited power of the power module may be equal to or slightly less than the rated power of the power module, for example, the limited power of the power module may be 0.9 times the rated power of the power module. The rated power of the power module refers to the effective power which can be continuously output by the power module, namely the maximum power which can be continuously and normally operated by the power module.
Furthermore, if the management module predicts that the power consumed by the load in the next time period is greater than the limited power of the power module, it indicates that the power consumed by the load is likely to exceed the power supply capability of the power module, and thus the management module can start the linkage power supply function, so that the power module and the energy storage module can be combined to supply power to the load in the following process.
If the management module predicts that the power consumed by the load in the next time period is less than or equal to the limited power of the power supply module, it indicates that the power consumed by the load will probably not exceed the power supply capability of the power supply module in a future period of time, so that the management module may not start the linkage power supply function at this time, and the power supply module continues to supply power to the load.
If the power consumed by the load in the current time period is less than or equal to the limited power of the power module after the linkage power supply function is started by the management module, and the management module predicts that the power consumed by the load in the next time period is less than or equal to the limited power of the power module, it indicates that the power consumed by the load in the current time does not exceed the power supply capability of the power module, and the power consumed in a future period of time does not exceed the power supply capability of the power module, so that the linkage power supply function can be closed by the management module at this time, so that the load is supplied with power by the power module only subsequently.
When the linkage power supply function is not started, the power consumed by the load in the current time period is the power output by the power supply module in the current time period. When the linkage power supply function is started, the power consumed by the load in the current time period is the sum of the power output by the power supply module in the current time period and the power output by the energy storage module in the current time period.
For example, as shown in fig. 4, the management module is used to turn on or off the coordinated power supply function. The management module may be a single board, which may include a processor, which may be a dedicated hardware or a chip, such as a microprocessor (including a Central Processing Unit (CPU), etc.), an application-specific integrated circuit (ASIC), or may be one or more integrated circuits for turning on or off the coordinated power supply function, etc. The power module may include n power management systems and n power supplies, where the n power management systems correspond to the n power supplies one to one, and n is an integer greater than or equal to 2. Each power management system is configured to manage a corresponding power supply, and each power management system may detect an output power of the power supply managed by the power management system, such as a Digital Signal Processor (DSP). The energy storage module may include a plurality of energy storage management systems and an energy storage element managed by each energy storage management system, and each energy storage management system may detect an output power of the energy storage element managed by the energy storage management system, for example, when the energy storage element is a battery, the energy storage management system may be a Battery Management System (BMS).
One transmission end of the management module is connected with the transmission end of the power supply module, and the other transmission end of the management module is connected with the transmission end of the energy storage module. Each power management system in the power module may transmit the output power of the power source detected during the current time period to the management module. Each energy storage management system in the energy storage module may send the output power of the energy storage element detected during the current time period to the management module.
When the linkage power supply function is not started, the processor in the management module can accumulate all output power sent by the power supply module to obtain the power consumed by the load in the current time period. When the linkage power supply function is started, the processor in the management module can accumulate all output power sent by the power module and the energy storage module to obtain the power consumed by the load in the current time period.
The operation of the management module for predicting the power consumed by the load in the next time period may be: the management module predicts the power consumed by the load in the next time period according to the time range of the next time period through the power consumption relation of the load; or the management module predicts the service of the load running in the next time period according to the time range of the next time period and the service running relation of the load, and predicts the power consumed by the load in the next time period according to the predicted service.
The power consumption relationship of the load is obtained by analyzing the power consumed by the load in the past in each time period. That is, the management module may establish a correlation database of the time period and the power consumed by the load, and then establish a power consumption relationship of the load through a learning algorithm according to the correlation database, where the power consumption relationship may predict the power consumed by the load in different time periods.
The power consumption relationship may be a functional relationship, or may be a neural network model, and the like, which is not limited in the embodiment of the present application. For example, when the power consumption relationship is a functional relationship, the independent variable in the functional relationship may be a time range, and the dependent variable in the functional relationship may be power consumption, so that a function value obtained by substituting a certain time range into the functional relationship is the power consumed by the load in the time range. For another example, when the power consumption relationship is a neural network model, the input of the neural network model may be a time range, and the output of the neural network model may be power consumption, so that after a certain time range is input into the neural network model, the output of the neural network model is the power consumed by the load in the time range.
When the management module predicts the power consumed by the load in the next time period according to the power consumption relationship of the load in the time range of the next time period, the management module may input the time range of the next time period into the power consumption relationship, and use the power output by the power consumption relationship as the predicted power consumed by the load in the next time period.
It should be noted that the service operation relationship of the load is obtained by analyzing the service that the load operates in each time period in the past. That is, the management module may establish a correlation database of the time period and the service of the load operation, and then establish a service operation relationship of the load through a learning algorithm according to the correlation database, and the service operation relationship may predict the service of the load operation in different time periods.
The service operation relationship may be a functional relationship, or may be a neural network model, and the like, which is not limited in the embodiment of the present application. For example, when the service operation relationship is a functional relationship, the independent variable in the functional relationship may be a time range, and the dependent variable in the functional relationship may be a service identifier, so that a function value obtained by substituting a certain time range into the functional relationship is the service identifier of the service loaded to operate in the time range. For another example, when the service operation relationship is a neural network model, the input of the neural network model may be a time range, and the output of the neural network model may be a service identifier, so that after a certain time range is input into the neural network model, the output of the neural network model is the service identifier of the service loaded to operate in the time range. The service identifier is used to identify a service, such as a service name, a code number, and the like.
When the management module predicts the service of the load running in the next time period according to the time range of the next time period and through the service running relationship of the load, the management module can input the time range of the next time period into the service running relationship, and the service identified by the service identifier output by the service running relationship is used as the predicted service of the load running in the next time period.
When the management module predicts the power consumed by the load in the next time period according to the predicted service, the management module may obtain the corresponding consumed power from the corresponding relationship between the service identifier and the consumed power according to the predicted service identifier of the service, as the power consumed by the predicted load in the next time period.
It should be noted that, the corresponding relationship between the service identifier and the consumed power may be preset, and the consumed power corresponding to each service identifier is the power that the load usually consumes when operating the service identified by the service identifier. For example, if the service identifier of the service predicted by the management module is service identifier 1, the management module may obtain, according to service identifier 1, from the correspondence between the service identifier and the power consumption shown in table 1 below, that the corresponding power consumption is power 1, and use power 1 as the predicted power consumed by the load in the next time period.
TABLE 1
Service identification Consuming power
Service identification
1 Power 1
Service identification 2 Power 2
Service identification 3 Power 3
…… ……
Note that, in the embodiments of the present application, only the correspondence between the service identifier and the power consumption shown in table 1 is described as an example, and table 1 does not limit the embodiments of the present application.
In a third possible mode, the management module acquires the power output by the power supply module and the residual capacity of the energy storage module; and if the power output by the power supply module is greater than the limited power of the power supply module, determining whether to start the linkage power supply function according to the residual capacity of the energy storage module and a second power, wherein the second power is a difference value between the power output by the power supply module and the limited power of the power supply module.
It should be noted that the limited power of the power module may be preset, and the limited power of the power module may be equal to the rated power of the power module, or slightly smaller than the rated power of the power module, for example, the limited power of the power module may be 0.9 times of the rated power of the power module.
In addition, as shown in fig. 4, each power management system in the power module may detect the output power of the power it manages and send to the management module. The processor in the management module may accumulate all output powers sent by the power supply module to obtain the power output by the power supply module.
Furthermore, the remaining capacity of the energy storage module refers to the maximum electric quantity that can be output by the energy storage module if the energy storage module is used for supplying power currently. The remaining capacity of the energy storage module may be obtained by detecting an operating state and the remaining capacity of an energy storage element included in the energy storage module. For example, as shown in fig. 4, each energy storage management system in the energy storage module may detect the operating state and remaining capacity of the energy storage elements it manages and send to the management module. The processor in the management module can determine the energy storage elements which normally work according to the working states of the energy storage elements sent by the energy storage module, and then accumulate the residual capacities of all the energy storage elements which normally work to obtain the residual capacity of the energy storage module.
It should be noted that, when the linked power supply function is not turned on, the power output by the power supply module is the power consumed by the load. If the power output by the power supply module is greater than the limited power of the power supply module, it indicates that the power consumed by the load exceeds the power supply capability of the power supply module, and therefore the management module can subtract the limited power of the power supply module from the power output by the power supply module to obtain the second power. The second power is the portion of the power consumed by the load that exceeds the power supply capability of the power supply module. Then, the power module can determine whether the energy storage module is enough to provide the second power according to the residual capacity of the energy storage module, so as to determine whether to start the linkage power supply function.
Wherein, the management module determines whether to start the operation of the linkage power supply function according to the residual capacity and the second power of the energy storage module and can be as follows: if the numerical value obtained by dividing the residual capacity of the energy storage module by the preset time length is larger than or equal to the second power, the management module starts a linkage power supply function; and if the numerical value obtained by dividing the residual capacity of the energy storage module by the preset time length is smaller than the second power, the management module does not start the linkage power supply function.
It should be noted that the preset time period may be preset. And after the residual capacity of the energy storage module is divided by the preset time, the maximum output power of the energy storage module can be obtained. The maximum output power of the energy storage module is the maximum power which can be output by the energy storage module under the condition that power supply needs to be carried out for at least a preset time. Therefore, if the maximum output power of the energy storage module is greater than or equal to the second power, which indicates that the energy storage module is enough to share the part of the power consumed by the load and exceeding the power supply capacity of the power supply module at the moment, the linkage power supply function can be started at the moment. If the maximum output power of the energy storage module is smaller than the second power, which indicates that the energy storage module is not enough to share the part of the power consumed by the load, which exceeds the power supply capability of the power supply module, the linkage power supply function may not be started at this time.
When the power module includes a power management system and a power managed by the power management system, in step 301, the power management system may determine whether the linkage power supply function is turned on.
If the linkage power supply function is not turned on, the power module may perform the following step 302 to supply power to the load, and if the linkage power supply function is turned on, the power module may perform the following steps 303 to 306 to supply power to the load.
Step 302: the power supply module controls the output voltage of the power supply module to be a preset voltage so as to supply power to the load and charge the energy storage module.
It should be noted that the preset voltage may be preset, and the preset voltage is a default output voltage of the power module. The preset voltage is higher than the setting voltage of the energy storage module. The setting voltage of the energy storage module is the voltage of the energy storage module which can maintain the stable output continuously. If the voltage of the charging end of the energy storage module is greater than the setting voltage of the energy storage module, the energy storage module is in a charging state; and if the voltage of the charging end of the energy storage module is less than the setting voltage of the energy storage module, the energy storage module is in a discharging state.
When the output voltage of the power supply module is higher than the setting voltage of the energy storage module, the energy storage module is in a charging state, and at the moment, the power supply module can not only supply power for the load, but also charge the energy storage module. Therefore, the normal power supply for the load can be ensured, the capacity of the energy storage module can be improved, and the energy storage module can be conveniently and subsequently used for supplying power for the load.
When the power module includes a power management system and a power managed by the power management system, in step 302, the power management system may control the output voltage of the power managed by the power management system to be a preset voltage.
It should be noted that, the power module used in the embodiment of the present application may select a power module with a rated power that is relatively close to the power consumed by the load when providing the typical service, for example, may select a power module with a rated power that is the power consumed by the load when providing the typical service. In this case, since the load is providing typical services most of the time, the power consumed by the load most of the time is close to the rated power of the power module, so that normal operation of the services can be ensured, and compared with a scheme in which a power module with a rated power close to the power consumed by the load at the peak of the services is selected in the related art, the power module in the embodiment of the present application can save a certain power, and the saved power can be used for power supply of other devices, so that the power utilization rate can be improved.
It should be noted that, in practical applications, the coordinated power supply function may be set to supply power to the load through the following steps 303 to 306 when the coordinated power supply function is turned on, and the existing manner (i.e., step 302) is used to supply power to the load when the coordinated power supply function is not turned on, so that compatibility with the existing power supply method may be achieved.
Of course, the load may be always supplied with power through the following steps 303 to 306 without providing the coordinated power supply function. That is, step 301 and step 302 may not be executed, and the load may be directly powered through steps 303 to 306, that is, during the service operation, the power module always selects whether to power the load by itself or by combining itself and the energy storage module according to the power consumption of the load.
Step 303: in the process of supplying power to the load by the power module, the power module determines the power output by the power module.
In the process of supplying power to the load by the power supply module, the power output by the power supply module is the power consumed by the load. Therefore, whether the combined power supply module and the energy storage module are needed to supply power to the load or not can be conveniently determined according to the power consumed by the load.
Where the power module includes a power management system and a power source managed by the power management system, the power output of the power source managed by the power management system may be determined in step 303.
It should be noted that, if the linked power supply function is provided in the embodiment of the present application, the power module may always determine the power output by the power module and transmit the power to the management module, so that the management module determines whether the linked power supply function needs to be turned on according to the power. In the process that the power module supplies power to the load, that is, in the process that the output voltage of the power module is higher than the setting voltage of the energy storage module, if the linkage power supply function is turned on, the power module may detect whether the power output by the power module is increased to be higher than the limit power from below the limit power of the power module, so as to determine whether to adjust the output voltage of the power module to perform the combined power supply with the energy storage module, specifically, the following process is performed.
Step 304: if the power output by the power supply module is smaller than or equal to the limited power of the power supply module, the power supply module controls the output voltage of the power supply module to be a preset voltage so that the power supply module supplies power to the load and charges the energy storage module.
It should be noted that the limited power of the power supply module is close to the rated power of the power supply module, and the rated power of the power supply module is the maximum output power of the power supply module. Since the load is providing typical services most of the time, and the power consumed by the load when providing the typical services is relatively close to the rated power of the power module in the embodiment of the present application, the power consumed by the load most of the time is also close to the limited power of the power module, so that the utilization rate of the power module can be ensured.
In this case, since the power consumed by the load at the time of the traffic peak is much larger than the power consumed by the load at the time of providing typical traffic, the power consumed by the load at the time of the traffic peak may be larger than the limit power of the power supply module. Since the load provides typical traffic most of the time and is at a peak of the traffic for a small portion of the time, the load consumes less power than the limit power of the power module for a large portion of the time and more power than the limit power of the power module for a small portion of the time.
In addition, if the power output by the power supply module is less than or equal to the limited power of the power supply module, it indicates that the power consumed by the load does not exceed the power supply capability of the power supply module, and the power supply module can control the output voltage of the power supply module to be the preset voltage so as to continuously supply power to the load and charge the energy storage module.
For example, as shown in fig. 5, the energy storage module includes a charging circuit, a discharging circuit and an energy storage element. The setting voltage of the energy storage element is smaller than the preset voltage, for example, the setting voltage of the energy storage element may be 52V, and the preset voltage may be 54.5V. The default output voltage of the power supply module is a preset voltage, and the energy storage module is in a charging state because the preset voltage is greater than the setting voltage of the energy storage element, and the power supply module charges the energy storage element through the charging circuit and supplies power to the load.
When the power module includes n power management systems and a power managed by each power management system, in step 304, when any one of the n power management systems detects that the power output by the power managed by the power management system is less than or equal to the first power, the output voltage of the power managed by the power management system is controlled to be maintained at the default voltage.
It should be noted that the first power is the limited power of the power module divided by n. Because of the load balancing characteristic of the power supply module, the power output by n power supplies in the power supply module is the same or similar, so for any one of the n power supplies, if the power output by the power supply is less than or equal to the first power, the power output by the power supply module should be less than or equal to the limited power of the power supply module, and therefore, the output voltage of the managed power supply can be controlled to be maintained at the default voltage so as to continue to supply power to the load and charge the energy storage module.
Step 305: if the power output by the power supply module is increased to be larger than the limited power from the limited power of the power supply module, the power supply module controls the output voltage of the power supply module to be lower than the setting voltage of the energy storage module, and the power supply module and the energy storage module supply power for the load.
In the process of supplying power to the load only by the power supply module, if the power consumed by the load is increased to be larger than the limited power of the power supply module, the power output by the power supply module is also increased to be larger than the limited power of the power supply module in a short time in order to meet the requirement of the load. When the power consumed by the load is greater than the limited power of the power module for a long time, if the load is only powered by the power module, the power failure phenomenon occurs because the power supply capability of the power module is insufficient.
In the embodiment of the application, if the power output by the power supply module is increased to be greater than the limited power from the limited power of the power supply module, which indicates that the power consumed by the load is changed from within the power supply capability of the power supply module to exceeding the power supply capability of the power supply module, the power supply module and the energy storage module can be combined to supply power to the load, so that power failure is avoided when the power consumed by the load exceeds the power supply capability of the power supply module, and normal operation of the load is ensured. Therefore, when the power consumed by the load is overlarge due to the service peak value, reliable power supply can be realized through the combination of the power supply module and the energy storage module, and the service performance can be not influenced even at the service peak value. In addition, in the embodiment of the application, under the condition that the power supply module supplies power, the synchronous power supply of the energy storage module is also supported, so that the utilization rate of the energy storage module can be improved.
It should be noted that, when the output voltage of the power supply module is lower than the setting voltage of the energy storage module, the energy storage module is in a discharging state, and at this time, the energy storage module can automatically share a part of the power consumed by the load, which exceeds the power supply capability of the power supply module. That is to say, in the embodiment of the present application, by controlling the output voltage of the power supply module to be lower than the setting voltage of the energy storage module, it can be ensured that the part of the power consumed by the load, which exceeds the power supply capability of the power supply module, is automatically provided by the energy storage module.
For example, as shown in fig. 5, the setting voltage of the energy storage element is less than the preset voltage, such as 52V for example, and 54.5V for example. The default output voltage of the power module is a preset voltage. When the power output by the power supply module is increased to be larger than the limited power from the limited power of the power supply module, the power supply module controls the output voltage of the power supply module to be reduced until the output voltage is lower than the setting voltage of the energy storage element. At this time, because the output voltage of the power supply module is less than the setting voltage of the energy storage element, the energy storage module is in a discharge state, the energy storage element supplies power to the load through the discharge circuit, and the power supply module also supplies power to the load.
When the power module includes n power management systems and a power source managed by each power management system, in step 305, when any one of the n power management systems detects that the power output by the power source managed by the power management system rises from the first power to below and is greater than the first power, the output voltage of the managed power source is controlled to be lower than the setting voltage of the energy storage module.
It should be noted that, because the power output by the n power supplies in the power supply module is the same or similar due to the load balancing characteristic of the power supply module, if the power output by the power supply increases from below the first power to above the first power, the power output by the power supply module should increase from below the limited power of the power supply module to above the limited power, and therefore, the output voltage of the managed power supply can be controlled to be lower than the setting voltage of the energy storage module, so as to enable the energy storage module to be in the discharging state.
Further, in order to ensure the reliability of power supply, when the power output by the power supply module rises from the limited power of the power supply module to be lower than the limited power, before the power supply module controls the output voltage of the power supply module to be lower than the setting voltage of the energy storage module, the power supply module may further send third indication information to the management module to indicate that power supply combining the power supply module and the energy storage module is to be started. At this time, the management module may determine the power capping value according to the remaining capacity of the energy storage module and the limited power of the power supply module. Then, in the process that the power supply module controls the output voltage of the power supply module to be lower than the setting voltage of the energy storage module, namely in the process that the power supply module and the energy storage module supply power to the load, the management module can limit the power consumed by the load according to the power capping value.
It should be noted that, in the process that the power module and the energy storage module supply power to the load, the total power output by the power module and the energy storage module is the power consumed by the load.
In addition, when the management module limits the power consumed by the load according to the power capping value, the power capping operation may be performed when the total power output by the power supply module and the energy storage module is greater than the power capping value. The power capping operation refers to a technique of setting an upper limit of power consumption to a load. The power capping operation is used to limit the power consumed by the load below the power capping value. Therefore, power supply safety can be guaranteed, and system power failure is avoided.
It is worth mentioning that, in the embodiment of the present application, the power capping value is set by combining the power supply capacities of the energy storage module and the power supply module, and compared with a mechanism that power capping is performed only according to the power supply capacity of the power supply module in the related art, the embodiment of the present application can improve the power supply capacity of the system, so that the system can operate at an over-frequency, and it is ensured that the service performance is not affected.
When the management module determines the power capping value according to the residual capacity of the energy storage module and the limited power of the power module, the maximum output power of the energy storage module can be obtained first, and the maximum output power of the energy storage module is obtained by dividing the residual capacity of the energy storage module by a preset time length; and adding the maximum output power of the energy storage module and the limited power of the power supply module to obtain a power capping value.
It should be noted that the maximum output power of the energy storage module can be obtained by dividing the remaining capacity of the energy storage module by the preset time. The maximum output power of the energy storage module is the maximum power which can be output by the energy storage module under the condition that power supply needs to be carried out for at least a preset time. Therefore, the maximum output power of the energy storage module is added with the limited power of the power supply module, so that the maximum power which can be output after the energy storage module and the power supply module are combined can be obtained, and the maximum power is used as a power capping value.
Further, after step 305, i.e. after the power module controls its own output voltage to be lower than the setting voltage of the energy storage module, the following step 306 may also be performed.
Step 306: if the power output by the power supply module is reduced to be smaller than the limited power from the limited power of the power supply module, the power supply module controls the output voltage of the power supply module to be higher than the setting voltage of the energy storage module, so that the power supply module supplies power to the load and charges the energy storage module.
If the power output by the power supply module is reduced from the limited power of the power supply module to above or below the limited power, indicating that the power consumed by the load is likely to have changed from previously exceeding the power supply capability of the power supply module to being within the power supply capability of the power supply module, the load may be powered by the power supply module and the energy storage module may be charged. Therefore, the normal power supply for the load can be ensured, the capacity of the energy storage module can be improved, and the energy storage module can be conveniently and subsequently used for supplying power for the load.
It should be noted that, when the output voltage of the power module is controlled to be higher than the setting voltage of the energy storage module, the power module may recover the default output voltage of the power module, that is, recover the output voltage of the power module to the preset voltage.
In addition, when the output voltage of the power supply module is higher than the setting voltage of the energy storage module, the energy storage module is in a charging state, and the power supply module supplies power to the load and charges the energy storage module.
For example, as shown in fig. 5, the setting voltage of the energy storage element is less than the preset voltage, such as 52V for example, and 54.5V for example. The default output voltage of the power module is a preset voltage. When the power output by the power supply module is reduced to be smaller than the limited power from the limited power of the power supply module, the power supply module controls the output voltage of the power supply module to be increased until the output voltage is higher than the setting voltage of the energy storage element, and if the power supply module can directly restore the output voltage of the power supply module to be the preset voltage. At this time, because the output voltage of the power supply module is greater than the setting voltage of the energy storage element, the energy storage module is in a charging state, and at this time, the power supply module charges the energy storage element through the charging circuit and supplies power to the load.
When the power module includes n power management systems and a power source managed by each power management system, in step 306, when any one of the n power management systems detects that the power output by the power source managed by the power management system decreases from the first power to more than or less than the first power, the output voltage of the managed power source is controlled to be higher than the setting voltage of the energy storage module.
It should be noted that, because the power output by the n power supplies in the power supply module is the same or similar due to the load balancing characteristic of the power supply module, if the power output by the power supply is reduced from the first power to less than the first power, the power output by the power supply module should be reduced from the limited power of the power supply module to less than the limited power, so that the output voltage of the managed power supply can be controlled to be higher than the setting voltage of the energy storage module to recharge the energy storage module and supply power to the load.
It is worth noting that in the process of supplying power to the load, if the power module is powered off, no matter the power module charges the energy storage module or the power module and the energy storage module supply power to the load at present, the energy storage module directly supplies power to the load subsequently, and therefore power supply reliability can be guaranteed. For example, as shown in fig. 5, when the power supply module is powered off, the output voltage of the power supply module is 0, so that the output voltage of the power supply module will be smaller than the setting voltage of the energy storage element, and the energy storage module will be in a discharge state, where the energy storage element supplies power to the load through the discharge circuit.
For ease of understanding, the power supply method provided in the embodiment of the present application is illustrated below with reference to fig. 6. Fig. 6 is a power-time graph showing a trend of power consumed by a load over time according to an embodiment of the present application.
And after the linkage power supply function is started, determining a power capping value according to the residual capacity of the energy storage module and the limited power of the power supply module. The power interval from the defined power of the power supply module to the power capping value is the joint power supply area of the power supply module and the energy storage module.
Specifically, when the power consumed by the load is less than or equal to the defined power of the power module, the power module supplies power to the load, i.e., the load is supplied only by the power module before time a1, a2 time-a 3 time, a4 time-a 5 time, and a6 time in fig. 6. When the power consumed by the load is larger than the limited power of the power supply module, the power supply module and the energy storage module supply power to the load, namely a1 time-a 2 time, a3 time-a 4 time and a5 time-a 6 time in fig. 6, and the power supply module and the energy storage module are combined to supply power to the load.
The shaded areas shown in fig. 6 are used to indicate the amount of power output by the energy storage module, and the area of each shaded area is the amount of power output by the energy storage module in the time period corresponding to each shaded area. It can be seen that the energy storage module outputs the maximum amount of electricity at time a 5-time a 6.
In the embodiment of the application, the power output by the power supply module is determined in the process that the power supply module supplies power to the load. And then, if the power output by the power supply module is increased to be larger than the limited power from the limited power of the power supply module, controlling the output voltage of the power supply module to be lower than the setting voltage of the energy storage module, and supplying power to the load by the power supply module and the energy storage module to ensure the normal operation of the load. Therefore, when the power consumed by the load is overlarge due to the service peak value, reliable power supply can be realized through the combination of the power supply module and the energy storage module, and the service performance can be not influenced even at the service peak value.
Fig. 7 is a schematic diagram of a power supply system according to an embodiment of the present application. Referring to fig. 7, the system includes a power module 701 and an energy storage module 702, an output terminal of the power module 701 is connected to a charging terminal of the energy storage module 702, both the output terminal of the power module 701 and a discharging terminal of the energy storage module 702 are connected to a load, and the power module 701 is connected to a mains supply.
The power module 701 is configured to determine power output by the power module 701 in a process of supplying power to a load by the power module 701;
the power supply module 701 is further configured to control the output voltage of the power supply module 701 to be lower than the setting voltage of the energy storage module 702 when the power output by the power supply module 701 rises to be greater than the limit power from the limit power of the power supply module 701, so that the power supply module 701 and the energy storage module 702 supply power to the load.
Optionally, the power module 701 is further configured to:
when the linkage power supply function is started and the power output by the power module 701 is increased to be larger than the limited power from the limited power of the power module 701, the output voltage of the power module 701 is controlled to be lower than the setting voltage of the energy storage module 702.
Optionally, referring to fig. 8, the system further includes a management module 703, one transmission end of the management module 703 is connected to the transmission end of the power module 701, and the other transmission end of the management module 703 is connected to the transmission end of the energy storage module 702;
the management module 703 is configured to predict power consumed by the load in the next time period, and when the predicted power is greater than the limited power of the power module 701, start the linkage power supply function; or, when the power output by the power module 701 is greater than the limited power of the power module 701, determining whether to start the linkage power supply function according to the remaining capacity of the energy storage module 702 and a second power, where the second power is a difference between the power output by the power module 701 and the limited power of the power module 701;
the management module 703 is further configured to send first indication information to the power module 701 when the linkage power supply function is turned on;
the power module 701 is further configured to determine that the linkage power supply function is turned on when the first indication information sent by the management module 703 is received.
Optionally, the power module 701 includes n power management systems and n power supplies, where the n power management systems correspond to the n power supplies one to one, each of the n power management systems is configured to manage a corresponding power supply, and n is an integer greater than or equal to 2;
and each power management system in the n power management systems is used for controlling the output voltage of the managed power supply to be lower than the setting voltage of the energy storage module 702 when the power output by the managed power supply rises from the first power to be lower than the first power, and the first power is obtained by dividing the limited power of the power supply module 701 by n.
Optionally, the power module 701 is further configured to:
when the power output by the power supply module 701 is reduced from the limit power to be higher than or lower than the limit power, the output voltage of the power supply module 701 is controlled to be higher than the setting voltage of the energy storage module 702, so that the power supply module 701 supplies power to the load and charges the energy storage module 702.
Optionally, referring to fig. 8, the system further includes a management module 703, one transmission end of the management module 703 is connected to the transmission end of the power module 701, and the other transmission end of the management module 703 is connected to the transmission end of the energy storage module 702;
the power supply module 701 is configured to send third indication information to the management module 703 when the power output by the power supply module 701 is increased to be greater than the limited power from the limited power of the power supply module 701;
the management module 703 is configured to, when receiving the third indication information sent by the power module 701, determine a power capping value according to the remaining capacity of the energy storage module 702 and the limited power of the power module 701, and limit the power consumed by the load according to the power capping value.
In the embodiment of the application, the power output by the power supply module is determined in the process that the power supply module supplies power to the load. And then, if the power output by the power supply module is increased to be larger than the limited power from the limited power of the power supply module, controlling the output voltage of the power supply module to be lower than the setting voltage of the energy storage module, and supplying power to the load by the power supply module and the energy storage module to ensure the normal operation of the load. Therefore, when the power consumed by the load is overlarge due to the service peak value, reliable power supply can be realized through the combination of the power supply module and the energy storage module, and the service performance can be not influenced even at the service peak value.
It should be noted that: the above power supply system embodiment and the power supply method embodiment belong to the same concept, and specific implementation processes of operations executed by the power module 701, the energy storage module 702, and the management module 703 may refer to the power supply method embodiment shown in fig. 3, which is not described herein again.
Fig. 9 is a schematic structural diagram of a power supply device according to an embodiment of the present application. The power supply device may be the power supply module 101 shown in fig. 1, the power supply module described in the embodiment of fig. 3, or the power supply module 701 described in the embodiment of fig. 7. Referring to fig. 9, the power supply apparatus may include a power management system 901 and a power supply 902. The power management system 901 may be implemented in a single board. The power management system 901 may include an interface card 9011, a processor 9012, and a memory 9013.
The interface card 9011 is used to implement a docking function with another device, external data may enter the interface card 9011 and be transmitted to the processor 9012, and data processed by the processor 9012 may be transmitted from the interface card 9011.
Processor 9012 may be a microprocessor (including a Central Processing Unit (CPU), etc.), an application-specific integrated circuit (ASIC), or may be one or more integrated circuits configured to control the execution of programs in accordance with the teachings of the present application.
The memory 9013 may be, but is not limited to, a read-Only memory (ROM), a Random Access Memory (RAM), an electrically erasable programmable read-Only memory (EEPROM), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to store desired program code in the form of instructions or data structures and that can be accessed by a computer.
The memory 9013 is configured to store a program code 910 for executing the scheme of the present application, and the processor 9012 is configured to execute the program code 910 stored in the memory 9013. The power management system 902 may implement the operations performed by the power modules in the embodiment of fig. 3 above by the processor 9012 and the program code 910 in the memory 9013.
Fig. 10 is a schematic structural diagram of a management device according to an embodiment of the present application. The management device may be the management module 103 shown in fig. 1, the management module described in the embodiment of fig. 3, or the management module 703 described in the embodiment of fig. 7. The management device may be implemented in the form of a single board. Referring to fig. 10, the management apparatus may include an interface card 1001, a processor 1002, and a memory 1003.
The interface card 1001 is used to realize an interface function with another device, external data may enter the interface card 1001 and be transmitted to the processor 1002, and data processed by the processor 1002 may be sent from the interface card 1001.
The processor 1002 may be a microprocessor (including a CPU, etc.), an ASIC, or may be one or more integrated circuits for controlling the execution of programs in accordance with the present teachings.
The memory 1003 may be, but is not limited to, a ROM, RAM, EEPROM, magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to store desired program code in the form of instructions or data structures and that can be accessed by a computer.
The memory 1003 is used for storing the program code 1010 for executing the scheme of the present application, and the processor 1002 is used for executing the program code 1010 stored in the memory 1003. The management device may implement the operations performed by the management module in the embodiment of fig. 3 above by the processor 1002 and the program code 1010 in the memory 1003.
The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, e.g., from one website, computer, server, or data center via wire (e.g., coaxial cable, fiber optics, Digital Subscriber line (Digital Subscriber line L ine, DS L)) or wirelessly (e.g., infrared, wireless, microwave, etc.) to another website, computer, server, or data center, the computer storage medium may be any computer readable storage medium capable of storing data, e.g., a Solid State Disk (DVD), a Solid State Disk (SSD), a Solid State Disk (DVD), a Digital Versatile Disk (SSD), etc.), or a Solid State Disk (DVD), a Digital Versatile Disk (SSD), etc.) and/or a combination thereof.
The above-mentioned embodiments are provided not to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (14)

1. A power supply method is applied to a system comprising a power supply module, an energy storage module and a load, wherein the output end of the power supply module is connected with the charging end of the energy storage module, the output end of the power supply module and the discharging end of the energy storage module are both connected with the load, the power supply module is connected with commercial power, and the method comprises the following steps:
determining the power output by the power supply module in the process that the power supply module supplies power to the load;
and if the power output by the power supply module rises to be greater than the limited power from the limited power of the power supply module, controlling the output voltage of the power supply module to be lower than the setting voltage of the energy storage module so as to supply power to the load by the power supply module and the energy storage module.
2. The method of claim 1, wherein controlling the output voltage of the power supply module to be lower than the set voltage of the energy storage module if the power output by the power supply module rises from the defined power of the power supply module below to be greater than the defined power comprises:
and if the linkage power supply function is started and the power output by the power supply module is increased to be larger than the limited power from the limited power of the power supply module, controlling the output voltage of the power supply module to be lower than the setting voltage of the energy storage module.
3. The method of claim 2, wherein the method further comprises:
if first indication information sent by a management module is received, determining that the linkage power supply function is started, wherein one transmission end of the management module is connected with the transmission end of the power module, and the other transmission end of the management module is connected with the transmission end of the energy storage module;
wherein the first indication information is transmitted by the management module when the power consumed by the load in the next time period is predicted to be greater than the limited power of the power supply module; or
The first indication information is sent by the management module when the power output by the power supply module is greater than the limited power of the power supply module and the linkage power supply function is determined to be started according to the remaining capacity of the energy storage module and a second power, wherein the second power is a difference value between the power output by the power supply module and the limited power of the power supply module.
4. The method of any of claims 1-3, wherein the power module includes n power management systems and n power supplies, the n power management systems corresponding to the n power supplies one-to-one, each of the n power management systems being configured to manage a corresponding power supply, the n being an integer greater than or equal to 2;
if the power output by the power supply module is increased to be larger than the limited power from the limited power of the power supply module, controlling the output voltage of the power supply module to be lower than the setting voltage of the energy storage module, including:
for any power supply in the n power supplies, if the power output by the power supply rises from a first power to a value lower than the first power, controlling the output voltage of the power supply to be lower than the setting voltage of the energy storage module, wherein the first power is obtained by dividing the limited power of the power supply module by n.
5. The method of claim 1, wherein after the controlling the output voltage of the power module to be less than the set voltage of the energy storage module, the method further comprises:
and if the power output by the power supply module is reduced to be smaller than the limited power from the limited power, controlling the output voltage of the power supply module to be higher than the setting voltage of the energy storage module so as to supply power to the load and charge the energy storage module by the power supply module.
6. The method of claim 1, wherein the method further comprises:
if the power output by the power supply module is increased to be larger than the limited power from the limited power of the power supply module, third indication information is sent to a management module, the management module determines a power capping value according to the residual capacity of the energy storage module and the limited power of the power supply module, and limits the power consumed by the load according to the power capping value, one transmission end of the management module is connected with the transmission end of the power supply module, and the other transmission end of the management module is connected with the transmission end of the energy storage module.
7. A power supply system is characterized by comprising a power supply module and an energy storage module, wherein the output end of the power supply module is connected with the charging end of the energy storage module, the output end of the power supply module and the discharging end of the energy storage module are both connected with a load, and the power supply module is connected with commercial power;
the power supply module is used for determining the power output by the power supply module in the process that the power supply module supplies power to the load;
the power supply module is further used for controlling the output voltage of the power supply module to be lower than the setting voltage of the energy storage module when the power output by the power supply module is increased to be larger than the limit power from the limit power of the power supply module, so that the power supply module and the energy storage module supply power to the load.
8. The system of claim 7, wherein the power module is further to:
when the linkage power supply function is started and the power output by the power supply module rises to be greater than the limited power from the limited power of the power supply module, controlling the output voltage of the power supply module to be lower than the setting voltage of the energy storage module.
9. The system of claim 8, further comprising a management module, one transmission terminal of the management module being connected to the transmission terminal of the power module, the other transmission terminal of the management module being connected to the transmission terminal of the energy storage module;
the management module is used for predicting the power consumed by the load in the next time period, and when the predicted power is greater than the limited power of the power supply module, the linkage power supply function is started; or, when the power output by the power supply module is greater than the limited power of the power supply module, determining whether to start the linkage power supply function according to the remaining capacity of the energy storage module and a second power, where the second power is a difference between the power output by the power supply module and the limited power of the power supply module;
the management module is further used for sending first indication information to the power supply module when the linkage power supply function is started;
and the power supply module is further used for determining that the linkage power supply function is started when the first indication information sent by the management module is received.
10. The system according to any one of claims 7-9, wherein the power module comprises n power management systems and n power supplies, the n power management systems corresponding to the n power supplies one to one, each of the n power management systems is configured to manage a corresponding power supply, and n is an integer greater than or equal to 2;
each power management system in the n power management systems is used for controlling the output voltage of the managed power supply to be lower than the setting voltage of the energy storage module when the power output by the managed power supply rises from a first power to a value lower than the first power, and the first power is obtained by dividing the limited power of the power supply module by n.
11. The system of claim 7, wherein the power module is further to:
when the power output by the power supply module is reduced to be smaller than the limited power from the limited power, the output voltage of the power supply module is controlled to be higher than the setting voltage of the energy storage module, so that the power supply module supplies power to the load and charges the energy storage module.
12. The system of claim 7, further comprising a management module, one transmission terminal of the management module being connected to the transmission terminal of the power module, the other transmission terminal of the management module being connected to the transmission terminal of the energy storage module;
the power supply module is used for sending third indication information to the management module when the power output by the power supply module is increased to be larger than the limited power from the limited power of the power supply module;
and the management module is used for determining a power capping value according to the residual capacity of the energy storage module and the limited power of the power supply module when receiving third indication information sent by the power supply module, and limiting the power consumed by the load according to the power capping value.
13. A power supply device characterized by comprising a power supply management system and a power supply, wherein the power supply management system is used for managing the power supply;
the power management system comprises an interface card, a processor and a memory; the processor sends data or receives data through the interface card; the memory is used for storing a program for supporting the power management system to execute the method of any one of claims 1 to 6 and storing data involved in implementing the method of any one of claims 1 to 6; the processor is configured to execute programs stored in the memory.
14. A computer-readable storage medium having stored therein instructions for loading by a processor and executing the method of any of claims 1-6.
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CN113471992A (en) * 2021-05-23 2021-10-01 山东英信计算机技术有限公司 Cabinet power supply method, system, equipment and medium
CN113471992B (en) * 2021-05-23 2024-02-09 山东英信计算机技术有限公司 Cabinet power supply method, system, equipment and medium
CN114825600A (en) * 2022-06-27 2022-07-29 新能动力(北京)智慧能源科技有限公司 Method and device for relieving impact of UPS system and storage medium

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