CN116545097A - Power supply system - Google Patents
Power supply system Download PDFInfo
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- CN116545097A CN116545097A CN202310671755.3A CN202310671755A CN116545097A CN 116545097 A CN116545097 A CN 116545097A CN 202310671755 A CN202310671755 A CN 202310671755A CN 116545097 A CN116545097 A CN 116545097A
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- power supply
- power
- supply device
- monitoring unit
- converter
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- 238000012544 monitoring process Methods 0.000 claims abstract description 67
- 230000002457 bidirectional effect Effects 0.000 claims description 8
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 7
- 229910052744 lithium Inorganic materials 0.000 claims description 7
- 238000000034 method Methods 0.000 abstract description 7
- 238000004146 energy storage Methods 0.000 description 11
- 238000010276 construction Methods 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 4
- 238000010248 power generation Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000011217 control strategy Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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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
- 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
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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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
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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
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/005—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting using a power saving mode
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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
- 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
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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
- 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
- H02J9/068—Electronic means for switching from one power supply to another power supply, e.g. to avoid parallel connection
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Direct Current Feeding And Distribution (AREA)
Abstract
The application provides a power supply system, relates to the power electronics field, can adjust the power supply equipment who provides the electric quantity for load equipment in a flexible way, and the maximum assurance system efficiency and reliability. The method comprises the following steps: a first power supply device, a second power supply device, and an integrated cabinet; an alternating current-alternating current (AC-DC) converter, a direct current bus, a monitoring unit, a third power supply device and at least one load device are arranged in the integrated cabinet; the output end of the first power supply device is connected with a direct current bus through an Alternating Current (AC) -Direct Current (DC) converter; the alternating current-direct current (AC-DC) converter, the second power supply device and the third power supply device are connected in parallel to one side of the DC bus; at least one load device is connected with the other side of the direct current bus; the monitoring unit is arranged on the direct current bus and used for determining a plurality of power supply modes according to the power supply states of the first power supply equipment, the second power supply equipment and the third power supply equipment and the power utilization state of at least one load equipment. The power supply device is used in the power supply process.
Description
Technical Field
The application relates to the technical field of power electronics, in particular to a power supply system.
Background
In the related art, a large number of communication base stations, comprehensive access machine rooms, convergence machine rooms and the like are required to be built by a communication operator, the sites are commonly in the form of building the machine rooms, various power supply equipment, battery equipment, telecommunication equipment and the like are arranged in the machine rooms, and under the construction mode, the problems of difficult site selection, multiple construction links, high cost, long construction and adjustment period and the like exist, and the problems of high energy consumption of the machine rooms, low PUE of the machine rooms, high operation and maintenance cost and the like are faced in actual operation and maintenance. The outdoor cabinet solves the defects of an indoor machine room to a certain extent, but each device and system has the problems of insufficient integration level, inconvenient access to the photovoltaic, only energy storage of batteries, incapability of realizing capacity allocation and intelligent management of multiple energy sources and low system efficiency.
Disclosure of Invention
The application provides a power supply system, which can flexibly adjust power supply equipment for providing electric quantity for load equipment and ensure the energy efficiency and reliability of the system to the greatest extent.
In order to achieve the above purpose, the present application adopts the following technical scheme:
in a first aspect, the present application provides a power supply system comprising: a first power supply device, a second power supply device, and an integrated cabinet; an Alternating Current (AC) -Direct Current (DC) converter, a direct current bus, a monitoring unit, a third power supply device and at least one load device are arranged in the integrated cabinet; the output end of the first power supply device is connected with the direct current bus through the Alternating Current (AC) -Direct Current (DC) converter; the alternating current-direct current (AC-DC) converter, the second power supply equipment and the third power supply equipment are connected in parallel to one side of the DC bus; the at least one load device is connected with the other side of the direct current bus; the monitoring unit is arranged on the direct current bus and used for determining a plurality of power supply modes according to the power supply states of the first power supply equipment, the second power supply equipment, the third power supply equipment and the power utilization state of the at least one load equipment.
With reference to the first aspect, in one possible implementation manner, the second power supply device includes a photovoltaic panel and a DC-DC converter; one end of the DC-DC converter is connected with the photovoltaic cell panel, and the other end of the DC-DC converter is connected to the direct current bus and connected with the alternating current AC-direct current DC converter in parallel.
With reference to the first aspect, in one possible implementation manner, the third power supply device includes a lithium battery and a bidirectional DC-DC converter; one end of the bidirectional DC-DC converter is connected with the lithium battery, and the other end of the bidirectional DC-DC converter is connected to the direct current bus and connected with the DC-DC converter in parallel.
With reference to the first aspect, in a possible implementation manner, the integrated cabinet is further provided with a power distribution unit; one end of the power distribution unit is connected with the direct current bus, and the other end of the power distribution unit is connected with the at least one load device; the power distribution unit is used for executing the instruction information sent by the monitoring unit.
With reference to the first aspect, in one possible implementation manner, the monitoring unit is specifically configured to monitor a power consumption of the at least one load device, and if the second power supply device is a main power supply and the power consumption is lower than the power consumption of the at least one load device, the monitoring unit is further configured to allocate a remaining power consumption required by the first power supply device to provide the at least one load device; and if the second power supply equipment cannot supply power and the first power supply equipment is in an energy-saving mode, the monitoring unit is further used for allocating the third power supply equipment to supply power for the at least one load equipment.
With reference to the first aspect, in one possible implementation manner, when the first power supply device is in a fault mode, the monitoring unit is further configured to determine that the second power supply device is a main power supply and the power supply amount is lower than the power consumption amount of the at least one load device, where the monitoring unit allocates the remaining power required by the third power supply device to provide the at least one load device; if the monitoring unit determines that the discharge voltage of the third power supply device is lower than a preset threshold value, the monitoring unit sends first indication information to the power distribution unit 5; the first indication information is used for indicating the power distribution unit 5 to turn off the power supply line of the priority load device according to the priority of the at least one load device.
With reference to the first aspect, in one possible implementation manner, if the monitoring unit determines that the first power supply device and the second power supply device are in a fault mode, the monitoring unit allocates the third power supply device as a main power supply, and monitors a battery capacity state of the third power supply device; if the monitoring unit determines that the battery capacity of the third power supply device is lower than a preset threshold value, the monitoring unit sends second indication information to the power distribution unit; the second indication information is used for indicating the power distribution unit to turn off a power supply line of the priority load equipment according to the priority of the at least one load equipment.
With reference to the first aspect, in a possible implementation manner, the system further includes a remote monitoring platform; the remote monitoring platform is in communication connection with the monitoring unit through a serial interface.
In this application, the names of the above-mentioned power supply systems do not constitute limitations on the devices or function modules themselves, which may appear under other names in a practical implementation. Insofar as the function of each device or function module is similar to the present application, it is within the scope of the claims of the present application and the equivalents thereof.
These and other aspects of the present application will be more readily apparent from the following description.
Based on the above technical solution, the embodiments of the present application provide a power supply system, including a first power supply device, a second power supply device, and an integrated cabinet; the integrated cabinet comprises an alternating current (alternating current, AC) -Direct Current (DC) converter, a DC bus, a monitoring unit, a third power supply device, and at least one load device; the output end of the first power supply device is connected with a direct current bus through an Alternating Current (AC) -Direct Current (DC) converter; the alternating current-direct current (AC-DC) converter, the second power supply device and the third power supply device are connected in parallel to one side of the DC bus; at least one load device is connected with the other side of the direct current bus; and the monitoring unit is arranged on the direct current bus and used for determining various power supply modes according to the power supply states of the first power supply equipment, the second power supply equipment and the third power supply equipment and the power utilization state of at least one load equipment.
In this way, the power supply system provided by the application can monitor the power consumption required by at least one load device through the monitoring unit, monitor the power supply states of the first power device, the second power device and the third power device at the same time, flexibly adjust the power supply device for providing power for the load device according to the required power consumption of the load device and the power supply states of different power devices, and ensure the energy efficiency and the reliability of the system to the greatest extent.
Drawings
Fig. 1 is a schematic structural diagram of a power supply system provided in the present application.
Detailed Description
A power supply system provided in an embodiment of the present application is described in detail below with reference to the accompanying drawings.
The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone.
The terms "first" and "second" and the like in the description and in the drawings are used for distinguishing between different objects or for distinguishing between different processes of the same object and not for describing a particular sequential order of objects.
Furthermore, references to the terms "comprising" and "having" and any variations thereof in the description of the present application are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed but may optionally include other steps or elements not listed or inherent to such process, method, article, or apparatus.
It should be noted that, in the embodiments of the present application, words such as "exemplary" or "such as" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "for example" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.
In the related art, a large number of communication base stations, comprehensive access machine rooms, convergence machine rooms and the like are required to be built by a communication operator, the sites are commonly in the form of building the machine rooms, various power supply equipment, battery equipment, telecommunication equipment and the like are arranged in the machine rooms, and under the construction mode, the problems of difficult site selection, multiple construction links, high cost, long construction and adjustment period and the like exist, and the problems of high energy consumption of the machine rooms, low PUE of the machine rooms, high operation and maintenance cost and the like are faced in actual operation and maintenance. The outdoor cabinet solves the defects of an indoor machine room to a certain extent, but each device and system has the problems of insufficient integration level, inconvenient access to the photovoltaic, only energy storage of batteries, incapability of realizing capacity allocation and intelligent management of multiple energy sources and low system efficiency.
In view of the above problems, the present embodiment provides a power supply system including a first power supply apparatus 1, a second power supply apparatus, and an integrated cabinet 2; the integrated cabinet 2 comprises an alternating current (alternating current, AC) -Direct Current (DC) converter, a DC bus 12, a monitoring unit 3, a third power supply device, and at least one load device 10; the output end of the first power supply device 1 is connected with a direct current bus 12 through an alternating current-direct current (AC-DC) converter 4; an AC-DC converter 4, a second power supply device, and a third power supply device are connected in parallel to one side of the DC bus 12; at least one load device 10 is connected to the other side of the dc bus 12; and the monitoring unit is arranged on the direct current bus and used for determining various power supply modes according to the power supply states of the first power supply equipment, the second power supply equipment and the third power supply equipment and the power utilization state of at least one load equipment.
In this way, the power supply system provided by the application can monitor the power consumption required by at least one load device through the monitoring unit, monitor the power supply states of the first power device, the second power device and the third power device at the same time, flexibly adjust the power supply device for providing power for the load device according to the required power consumption of the load device and the power supply states of different power devices, and ensure the energy efficiency and the reliability of the system to the greatest extent.
Fig. 1 shows a structure of the power supply system. As shown in fig. 1, the power supply system 100 includes: a first power supply apparatus 1, a second power supply apparatus, and an integrated cabinet 2; the integrated cabinet 2 comprises an AC-DC converter 4, a DC bus 12, a monitoring unit 3, a third power supply device, and at least one load device 10.
In a possible way, the AC-DC converter 4 may convert the AC power of the first power supply device 1 into the DC power required by the load device 10, where the DC power output of the AC-DC converter 4 may be-48V DC power or 240V DC power, or another voltage indicative DC power required by the load device 10.
In the power supply system provided in the present application, as shown in fig. 1, an output end of the first power supply device 1 is connected to a DC bus 12 through an AC-DC converter 4; the alternating current-direct current (AC-DC) converter 4, the second power supply device and the third power supply device are sequentially connected to one side of the DC bus 12 in parallel from top to bottom; at least one load device 10 is connected to the other side of the dc bus 12; the first power supply device 1, the second power supply device, and the third power supply device supply electric power to at least one load device 10 via a dc bus 12.
In a possible example, the first power supply device 1 may be a mains supply, which may be a second preferred power supply, the first power supply device 1 being normally powered and the third power supply device being chargeable in a non-energy saving mode.
In a possible manner, the monitoring unit 3 is disposed on the dc bus 12, and is configured to monitor the power supply states of the first power supply device 1, the second power supply device, and the third power supply device, and the load state of at least one load device 10, where the monitoring unit 3 can flexibly adjust the power supply device that provides the load device 10 with electric power according to the required electric power consumption of the load device 10 and the power supply states of different power supply devices.
In a possible implementation, the second power supply device comprises a photovoltaic panel 6 and a DC-DC converter 7.
One end of the DC-DC converter 7 is connected to the photovoltaic panel 6, and the other end of the DC-DC converter 7 is connected to the DC bus 12 and connected in parallel with the AC-DC converter 4. The second power supply device may be a photovoltaic power supply, and is a first preferred power supply under the condition of no failure or insufficient power, and the maximum power generation capacity of the second power supply device is not greater than the power consumption of the load device 10, so that the power generation capacity of the photovoltaic panel 6 can be fully utilized, and the situation of data waste is avoided.
In a possible implementation, the third power supply device comprises a lithium battery 8 and a bi-directional DC-DC converter 9.
One end of the bidirectional DC-DC converter 9 is connected to the lithium battery 8, and the other end of the bidirectional DC-DC converter 9 is connected to the DC bus 12 and connected in parallel with the DC-DC converter 7. The battery energy storage/standby system consisting of the lithium battery 8 and the bidirectional DC-DC converter 9 is a third preferred power supply.
In a possible way, the integrated cabinet 2 further comprises: a power distribution unit 5; one end of the power distribution unit 5 is connected with the direct current bus 12, and the other end of the power distribution unit 5 is connected with at least one load device 10; the power distribution unit 5 is configured to execute instruction information sent by the monitoring unit 3, and is capable of intelligently turning off and recovering power according to a power supply condition of the first power supply device 1, a power generation condition of the second power supply device, an energy storage/standby condition of the third power supply device, and a load condition of the load device 10.
It is noted that the actuator of the power distribution unit 5 may be an electronic switch or a circuit breaker with an operating power supply, or a circuit breaker with auxiliary contacts.
In a possible implementation manner, the monitoring unit 3 is specifically configured to monitor the power consumption of at least one load device 10, and if the second power device is a main power supply and the power consumption is lower than the power consumption of at least one load device 10, the monitoring unit 3 is further configured to allocate the remaining power consumption required by the first power device to provide at least one load device 10; if the second power supply device cannot supply power and the first power supply device is in the energy saving mode, the monitoring unit 3 is further configured to allocate the third power supply device to supply power to the at least one load device 10.
It can be understood that the monitoring unit 3 monitors the operation condition and the fault condition of the station power supply system, and makes different power supply strategies, that is to say, distributes and controls the power supply capacity of the three types of power supply sources.
In a general case, the second power supply device (photovoltaic power supply) is a first priority power supply, wherein insufficient capacity is provided by the first power supply device 1 (mains power supply) to meet all power requirements of the load device 10. If the second power supply device (photovoltaic power supply) cannot generate power and the first power supply device 1 (mains supply) needs limited capacity supply or peak-shifting power supply (i.e. in the energy-saving mode), the AC-DC converter 4 limits power output, and the insufficient capacity is provided by the third power supply device (battery energy storage/standby power system); when the discharge voltage of the third power supply device (battery storage/backup system) is lower than the U value, the first power supply device 1 (mains supply) is switched to supply power, and the third power supply device (battery storage/backup system) enters an offline mode.
In a possible implementation manner, when the first power supply device is in a fault mode, the monitoring unit 3 is further configured to determine that the second power supply device is a main power supply and the power supply amount is lower than the power consumption amount of the at least one load device 10, and the monitoring unit 3 allocates the remaining power required by the third power supply device to provide the at least one load device 10; if the monitoring unit 3 determines that the discharge voltage of the third power supply device is lower than a preset threshold value, the monitoring unit 3 sends first indication information to the power distribution unit 5; the first indication information is used to instruct the power distribution unit 5 to switch off the power supply line of the priority load device according to the priority of the at least one load device 10.
In an example, when the first power supply device 1 (mains supply) fails, the second power supply device (photovoltaic power supply) is the first preferred power supply, and the insufficient capacity required by the load device 10 is provided by the third power supply device (battery storage/backup system).
It will be appreciated that if the monitoring unit 3 monitors that the first power supply device 1 (mains supply) is in fault mode, while the third power supply device (battery storage/backup system) discharges a voltage below M 1 When the value isThe monitoring unit 3 sends indication information for cutting off non-important loads to the power distribution unit 5, and the power distribution unit 5 can cut off the 1 st-stage non-important loads in an action mode; further, if the monitoring unit 3 monitors that the discharge voltage of the third power supply device (battery storage/standby system) is lower than M 2 When the value is reached, the monitoring unit 3 continues to send the cutting indication information to the power distribution unit 5, and then the power distribution unit 5 acts to cut the 2 nd-level unimportant load; if the discharge voltage of the third power supply device (battery energy storage/standby system) is lower than M n When the value is reached, the power distribution unit 5 acts to cut off the non-important load of the nth stage, so as to ensure the electricity consumption of the most important load, wherein M 1 >M 2 >M n (n has a value of 3,4,5,6 and …).
In a possible implementation manner, if the monitoring unit 3 determines that the first power supply device and the second power supply device are in a fault mode, the monitoring unit 3 allocates the third power supply device to be a main power supply, and monitors a battery capacity state of the third power supply device; if the monitoring unit 3 determines that the battery capacity of the third power supply device is lower than the preset threshold value, the monitoring unit 3 sends second indication information to the power distribution unit 5; the second indication information is used to instruct the power distribution unit 5 to switch off the power supply line of the priority load device according to the priority of the at least one load device 10.
In an example, when the first power supply device 1 (mains supply) fails and the second power supply device (photovoltaic power supply) cannot generate power, the third power supply device (battery energy storage/standby system) is a power supply, if the monitoring unit 3 monitors that the first power supply device 1 (mains supply) is in a fault mode, the power distribution unit 5 cuts off unimportant loads in a grading manner according to the condition that the battery capacity sent by the monitoring unit 3 is reduced, and the discharge voltage of the third power supply device (battery energy storage/standby system) is lower than P 1 When the value is reached, the power distribution unit 5 acts to cut off the non-important load of the 1 st level, and the discharge voltage of the third power supply equipment (battery energy storage/standby power system) is lower than P 2 When the value is reached, the power distribution unit 5 acts to cut off the non-important load of the 2 nd level, and the discharging voltage of the third power supply equipment (battery energy storage/standby power system) is lower than P n When the value is reached, the power distribution unit 5 acts to cut off the non-important load of the nth stage, so as to ensure the electricity consumption of the most important load, wherein P 1 >P 2 >P n (n is 3,4,5,6, …))。
In a possible implementation, the system further comprises a remote monitoring platform 11; the remote monitoring platform 11 is in communication connection with the monitoring unit 3 through an RS 485 serial interface.
It can be understood that the integrated cabinet 2 provided by the application integrates the monitoring unit 3, the power supply equipment, the energy storage/standby equipment and the energy-saving control strategy, supports distributed photovoltaic access, and improves photovoltaic utilization to the greatest extent. The integrated power supply, energy saving and guarantee strategy provided by the application can select different power supply modes, and the energy efficiency and reliability of the system are provided to the greatest extent.
In the embodiments provided in the present application, it should be understood that the modules of the disclosed power supply system may be implemented in other manners. For example, the embodiments described above are merely illustrative, e.g., the division of modules is merely a logical function division, and other divisions may be implemented in practice, e.g., some features may be omitted or not performed.
The modules illustrated as separate components may or may not be physically separate, and the components may or may not be physical modules, i.e., may be located in one place, or may be distributed over a plurality of modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes or substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (8)
1. A power supply system, the system comprising: a first power supply device, a second power supply device, and an integrated cabinet; an Alternating Current (AC) -Direct Current (DC) converter, a direct current bus, a monitoring unit, a third power supply device and at least one load device are arranged in the integrated cabinet;
the output end of the first power supply device is connected with the direct current bus through the Alternating Current (AC) -Direct Current (DC) converter; the alternating current-direct current (AC-DC) converter, the second power supply equipment and the third power supply equipment are connected in parallel to one side of the DC bus; the at least one load device is connected with the other side of the direct current bus;
the monitoring unit is arranged on the direct current bus and used for determining a plurality of power supply modes according to the power supply states of the first power supply equipment, the second power supply equipment, the third power supply equipment and the power utilization state of the at least one load equipment.
2. The system of claim 1, wherein the second power supply device comprises a photovoltaic panel and a DC-DC converter; one end of the DC-DC converter is connected with the photovoltaic cell panel, and the other end of the DC-DC converter is connected to the direct current bus and connected with the alternating current AC-direct current DC converter in parallel.
3. The system of claim 1 or 2, wherein the third power supply device comprises a lithium battery and a bi-directional DC-DC converter; one end of the bidirectional DC-DC converter is connected with the lithium battery, and the other end of the bidirectional DC-DC converter is connected to the direct current bus and connected with the DC-DC converter in parallel.
4. A system according to claim 3, wherein the integrated cabinet is further provided with a power distribution unit; one end of the power distribution unit is connected with the direct current bus, and the other end of the power distribution unit is connected with the at least one load device; the power distribution unit is used for executing the instruction information sent by the monitoring unit.
5. The system according to claim 4, wherein the monitoring unit is specifically configured to monitor a power consumption of the at least one load device, and if the second power device is a main power supply and the power consumption is lower than the power consumption of the at least one load device, the monitoring unit is further configured to allocate a remaining power consumption required by the first power device to provide the at least one load device; and if the second power supply equipment cannot supply power and the first power supply equipment is in an energy-saving mode, the monitoring unit is further used for allocating the third power supply equipment to supply power for the at least one load equipment.
6. The system of claim 5, wherein the monitoring unit is further configured to, when the first power supply device is in a failure mode, determine that the second power supply device is a main power supply and the power supply amount is lower than the power consumption amount of the at least one load device, allocate the remaining power required by the third power supply device to provide the at least one load device; if the monitoring unit determines that the discharge voltage of the third power supply device is lower than a preset threshold value, the monitoring unit sends first indication information to the power distribution unit; the first indication information is used for indicating the power distribution unit to turn off a power supply line of the priority load equipment according to the priority of the at least one load equipment.
7. The system according to claim 6, wherein if the monitoring unit determines that the first power supply device and the second power supply device are in a failure mode, the monitoring unit allocates the third power supply device as a main power supply and monitors a battery capacity state of the third power supply device;
if the monitoring unit determines that the battery capacity of the third power supply device is lower than a preset threshold value, the monitoring unit sends second indication information to the power distribution unit; the second indication information is used for indicating the power distribution unit to turn off a power supply line of the priority load equipment according to the priority of the at least one load equipment.
8. The system of claim 1, further comprising a remote monitoring platform; the remote monitoring platform is in communication connection with the monitoring unit through a serial interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310671755.3A CN116545097A (en) | 2023-06-07 | 2023-06-07 | Power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310671755.3A CN116545097A (en) | 2023-06-07 | 2023-06-07 | Power supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117477521A (en) * | 2023-12-26 | 2024-01-30 | 苏州元脑智能科技有限公司 | Power supply and backup system, power supply and backup control method and data center |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117477521A (en) * | 2023-12-26 | 2024-01-30 | 苏州元脑智能科技有限公司 | Power supply and backup system, power supply and backup control method and data center |
| CN117477521B (en) * | 2023-12-26 | 2024-03-22 | 苏州元脑智能科技有限公司 | Power supply and backup system, power supply and backup control method and data center |
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