WO2021017563A1 - 一种供电设备及控制方法 - Google Patents

一种供电设备及控制方法 Download PDF

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Publication number
WO2021017563A1
WO2021017563A1 PCT/CN2020/089209 CN2020089209W WO2021017563A1 WO 2021017563 A1 WO2021017563 A1 WO 2021017563A1 CN 2020089209 W CN2020089209 W CN 2020089209W WO 2021017563 A1 WO2021017563 A1 WO 2021017563A1
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WO
WIPO (PCT)
Prior art keywords
unit
output
power supply
output bus
bus
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2020/089209
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English (en)
French (fr)
Inventor
张雪霁
熊立群
冯金礼
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to EP20846013.9A priority Critical patent/EP4002637A4/en
Publication of WO2021017563A1 publication Critical patent/WO2021017563A1/zh
Priority to US17/587,649 priority patent/US11955802B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J1/00—Circuit arrangements for DC mains or DC distribution networks
    • H02J1/08—Three-wire DC power distribution systems; Systems having more than three wires
    • H02J1/084—Three-wire DC power distribution systems; Systems having more than three wires for selectively connecting the load or loads to one or several among a plurality of power lines or power sources
    • H02J1/086—Three-wire DC power distribution systems; Systems having more than three wires for selectively connecting the load or loads to one or several among a plurality of power lines or power sources for providing alternative feeding paths between load or loads and source or sources when the main path fails
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J4/00—Circuit arrangements for mains or distribution networks not specified as AC or DC; Circuit arrangements for mains or distribution networks combining AC and DC sections or sub-networks
    • H02J4/20—Networks integrating separated AC and DC power sections
    • H02J4/25—Networks integrating separated AC and DC power sections for transfer of electric power between AC and DC networks, e.g. for supplying the DC section within a load from an AC mains system
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J1/00—Circuit arrangements for DC mains or DC distribution networks
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; 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
    • H02J3/001—Arrangements for handling faults or abnormalities, e.g. emergencies or contingencies
    • H02J3/0012—Arrangements for handling faults or abnormalities, e.g. emergencies or contingencies characterised by the contingency detection means in AC networks, e.g. using phasor measurement units [PMU], synchrophasors or contingency analysis
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2105/00—Networks for supplying or distributing electric power characterised by their spatial reach or by the load
    • H02J2105/40—Networks for supplying or distributing electric power characterised by their spatial reach or by the load characterised by the loads connecting to the networks or being supplied by the networks
    • H02J2105/42—Home appliances
    • H02J2105/425—Home appliances the loads being an Information and Communication Technology [ICT] facility

Definitions

  • the embodiments of the present application relate to the field of power supply, and more specifically, to power supply equipment and control methods.
  • High-power base station equipment has problems such as insufficient remote capability and large cable loss.
  • the prior art usually solves the above problems by increasing the voltage of the power supply bus.
  • the boost requirements of different remote loads are different, and the existing power supply system cannot Separate voltage regulation for different output loads results in limited boost space of the power supply bus and low power supply efficiency.
  • the embodiments of the present application provide a power supply device and a control method, which can supply power to different loads respectively, and optimize end-to-end efficiency.
  • a power supply device including: a first AC/DC AC/DC unit, an input end of the first AC/DC unit is connected to an AC input bus, and an output of the first AC/DC unit
  • the second AC/DC unit, the input end of the second AC/DC unit is connected to the AC input bus, and the output end of the second AC/DC unit is connected to the first Two DC output bus.
  • multiple AC/DC units are used to output to multiple DC output buses.
  • the multiple DC output buses can output independently to supply power for different types of loads.
  • This multi-bus power supply solution can be configured for different types of loads.
  • the corresponding DC output bus voltage can be configured for different types of loads.
  • boosting voltage can reduce line loss.
  • Different loads have different boosting requirements.
  • This multi-bus solution can meet the boosting requirements of different loads, reduce line loss, achieve end-to-end efficiency optimization, and improve remote capability.
  • the voltages of the first DC output bus and the second DC output bus are different.
  • the second AC/DC unit has an adjustable output
  • the power supply device further includes a first controller configured to determine The second DC voltage is output on the second DC bus, and the second AC/DC unit is adjusted according to the DC voltage.
  • the corresponding DC output bus voltage can be flexibly configured as required.
  • the DC output bus voltage can be adjusted in time to reduce line loss and increase the pull Far ability.
  • the power supply device further includes: a bidirectional DC/DC DC/DC unit connected to the first DC output bus and Between the second DC output bus.
  • the power supply device further includes a second controller, and the second controller is configured to enable the power supply device when it is determined that the first AC/DC unit is faulty.
  • the bidirectional DC/DC unit is used to supply power to the first DC output bus through the second DC output bus.
  • the power supply device further includes a third controller configured to determine that the power supply capacity of the first DC output bus is less than the load demand , Enabling the bidirectional DC/DC unit to control the power compensation between the first DC output bus and the second DC output bus.
  • the first AC/DC unit is an AC/DC unit with stable output
  • the power supply device further includes: a backup unit, the backup unit The DC output terminal is connected to the first DC output bus.
  • the power supply device further includes a fourth controller, and the fourth controller is configured to control the second AC when it is determined that the two-way DC/DC unit is faulty. /DC unit to make the DC voltage of the second DC output bus equal to the voltage of the first DC output bus.
  • the power supply device further includes a fifth controller, and the fifth controller is configured to enable the bidirectional DC when determining that the AC input bus is faulty /DC unit, so that the backup power unit supplies power to the second DC output bus.
  • each DC output bus can share a set of backup power unit, and by controlling the two-way DC/DC unit, unified power backup and unified management can be realized, thereby saving floor space.
  • the first controller, the second controller, the third controller, the fourth controller, and the fifth controller may be the same controller.
  • a method for controlling a power supply device includes a first AC/DC unit, a second AC/DC unit, a bidirectional DC/DC DC/DC unit, and a backup power unit.
  • the input end of the AC/DC unit is connected to an AC input bus
  • the output end of the first AC/DC unit is connected to a first DC output bus
  • the first AC/DC unit is a stable output AC/DC unit
  • the input end of the second AC/DC unit is connected to the AC input bus
  • the output end of the second AC/DC unit is connected to the second DC output bus
  • the second AC/DC unit has an adjustable output Yes
  • the bidirectional DC/DC unit is connected between the first DC output bus and the second DC output bus
  • the DC output end of the backup unit is connected to the first DC output bus
  • the method includes:
  • the bidirectional DC/DC unit is enabled to supply power to the first DC output bus through the second DC output bus.
  • the method further includes:
  • the bidirectional DC/DC unit is enabled to supply power to the second DC output bus through the first DC output bus.
  • multiple AC/DC units are used to output to multiple DC output buses, and the multiple DC output buses can output independently to supply power for different types of loads.
  • This multi-bus power supply solution can target different types of loads. Configure the corresponding DC output bus voltage.
  • boosting voltage can reduce line loss.
  • Different loads have different boosting requirements.
  • This multi-bus solution can meet the boosting requirements of different loads, reduce line loss, achieve end-to-end efficiency optimization, and improve remote capability.
  • the method further includes: determining that the power supply capacity of the first DC output bus is less than the load demand; enabling the bidirectional DC/DC unit to control all The power compensation between the first DC output bus and the second DC output bus.
  • the method further includes: determining that the power supply capacity of the second DC output bus is less than the load demand; enabling the bidirectional DC/DC unit to control the Power compensation between the first DC output bus and the second DC output bus.
  • the method further includes: determining that the bidirectional DC/DC unit is faulty; bypassing the bidirectional DC/DC unit; adjusting the second AC/DC Unit, so that the DC voltage of the second DC output bus is the same as the DC voltage of the first DC output bus.
  • the method further includes: determining that the AC input bus is faulty; enabling the bidirectional DC/DC unit so that the backup power unit is the The second DC output bus provides power.
  • each DC output bus can share a set of backup power unit, and by controlling the two-way DC/DC unit, unified power backup and unified management can be realized, thereby saving floor space.
  • Figure 1 is a schematic diagram of a single-bus power supply device.
  • Figure 2 is a schematic diagram of a boosted power supply device.
  • Fig. 3 is a schematic diagram of a power supply device according to an embodiment of the present application.
  • Fig. 4 is a schematic diagram of a power supply device according to another embodiment of the present application.
  • Fig. 5 is a schematic diagram of a power supply device according to another embodiment of the present application.
  • Fig. 6 is a schematic diagram of a power supply device superimposed on a single bus power supply device according to an embodiment of the present application.
  • Fig. 7 is a schematic diagram of a control method according to an embodiment of the present application.
  • the technical solution of the embodiment of the present application can be applied to a system that simultaneously supplies power to loads that require different voltages independently, such as a future fifth generation (5th generation, 5G) system newly-built or superimposed scenario.
  • 5th generation 5th generation
  • FIG. 1 shows a schematic diagram of the structure of a single-bus power supply device 100.
  • the AC input bus 110 is connected to a plurality of AC/DC (alternative current/direct current, AC/DC) converters 130 via a surge protector 120 (SPD).
  • SPD 120 can also be called a lightning protection box.
  • a plurality of AC/DC converters 130 output in parallel, and are combined with the backup unit 140 to the DC output bus 150.
  • Power distribution unit 170 power distribution unit, PDU
  • the single-bus power supply equipment may be managed by a system management unit 160 (system management unit, SMU).
  • boosted power supply is generally used to reduce line loss.
  • a boost circuit can be directly added to the DC output bus of the single-bus power supply device to supply power for 5G devices.
  • Fig. 2 shows a schematic diagram of a single busbar boost power supply device 200.
  • the boost device 200 adds a DC boost unit 180 (boosted voltage direct current, BVDC) to the single busbar power supply device 100, which is connected in series with AC/ Between the output of the DC converter 130 and the power distribution unit PDU 170.
  • BVDC180 boosts the voltage of the DC output bus 150 to the required voltage.
  • the AC/DC converter and BVDC are superimposed on the single-bus power supply equipment, which means that a set of single-bus power supply equipment with a higher DC output bus voltage is obtained without the boost voltage of the bus.
  • the DC output bus voltage will be higher than the -48V DC output bus voltage of the 2/3/4G power system.
  • FIG. 3 shows a schematic diagram of a power supply device 300 according to an embodiment of the present application.
  • the power supply device 300 of FIG. 3 includes a first AC/DC unit 310 and a second AC/DC unit 320.
  • the input terminal of the first AC/DC unit 310 is connected to the AC input bus 110.
  • the output terminal of the first AC/DC unit 310 is connected to the first DC output bus 340.
  • the input end of the second AC/DC unit 320 is connected to the AC input bus 110.
  • the output terminal of the second AC/DC unit 320 is connected to the second DC output bus 350.
  • the first AC/DC unit 310 and the second AC/DC unit 320 may be any units that can convert AC to DC, for example, AC/DC converters.
  • the embodiment of the present application does not limit the number of AC/DC converters included in each AC/DC unit.
  • the AC/DC unit may include a single AC/DC converter, or may be composed of multiple AC/DC converters in parallel.
  • the solution in the embodiment of the present application is not limited to two AC/DC units, and may also include other AC/DC units.
  • the other AC/DC units may be similar to the first AC/DC unit 310 and the second AC/DC unit 320, the input end of which may be connected to an AC input bus, and the output end of which is connected to a different DC output bus.
  • the power supply device 300 may further include a third AC/DC unit 330, the input end of the third AC/DC unit 330 is connected to the AC input bus 110, and the output end of the third AC/DC unit 330 is connected to the third DC output Bus 360.
  • Each DC output bus can be connected to the corresponding power distribution unit PDU or load, which means that each DC output bus can directly supply power to the load or supply power to the load through the power distribution unit PDU.
  • multiple AC/DC units are used to output to multiple DC output buses.
  • the multiple DC output buses can output independently to supply power for different types of loads.
  • This multi-bus power supply solution can be configured for different types of loads.
  • the corresponding DC output bus voltage can be configured for different types of loads.
  • boosting voltage can reduce line loss.
  • the boost requirements for different loads are different.
  • the boost demand is higher.
  • the boost space is limited, for example, by the withstand voltage value of a certain load.
  • the limited boost space can't reduce the line loss better.
  • the multi-bus solution of the embodiment of the present application can meet the boosting requirements of different loads, is not limited by other DC output bus loads, can better reduce line loss, achieve end-to-end efficiency optimization, and improve remote capability.
  • the solution of the embodiment of the present application does not introduce other units on the bus bar, and therefore does not introduce a new fault point on the bus bar, which ensures the reliability of power supply. Reduce design costs. No new fault points are introduced on the bus, which ensures the reliability of power supply and reduces design costs.
  • the input ends of the first AC/DC unit 310 and the second AC/DC unit 320 are connected to the AC input bus 110, and the connection relationship is not limited to the AC/DC unit directly connected to the AC input bus 110, and may also be an AC input
  • the bus 110 is output to the AC/DC unit via other modules.
  • the AC input bus can be connected to each AC/DC unit through SPD 120.
  • the positional relationship of the SPD 120 in FIG. 3 is only for illustration.
  • the surge protector 120 may also be arranged inside the power supply device 300.
  • the output ends of the first AC/DC unit 310 and the second AC/DC unit 320 are respectively connected to two DC output bus bars.
  • the connection relationship is not limited to the direct connection between the AC/DC unit and the DC output bus bar, and can also be an AC/DC unit It is connected to the DC output bus through other modules.
  • the voltages of the first DC output bus 340 and the second DC output bus 350 can be configured according to different loads, that is, the output voltage of the first DC output bus 340 and the output voltage of the second DC output bus 350 can be the same , Can also be different.
  • the AC/DC unit may include a stable output AC/DC unit and/or an adjustable output AC/DC unit.
  • the first AC/DC unit 310 may be an AC/DC unit with stable output
  • the second AC/DC unit 320 may be an AC/DC unit with adjustable output.
  • the power supply device may further include a first controller, and the first controller may be used to control the second AC/DC unit.
  • the first controller and the second AC/DC unit 320 may be separate If provided, they can also be integrated together.
  • the first controller is integrated in the second AC/DC unit 320.
  • the first controller can be used to determine the DC voltage on the second DC output bus 350, and adjust the second AC/DC unit 320 according to the DC voltage.
  • the third AC/DC unit 330 may be an AC/DC unit with adjustable output.
  • the first controller can also be used to control the third AC/DC unit 330.
  • the first controller can be used to determine the DC voltage on the third DC output bus 360 and adjust the third AC/DC unit 330 according to the DC voltage.
  • other controllers can also control the third AC/DC unit 330.
  • the first controller may determine the DC voltage of the second DC output bus 350 according to the signal sent by the load on the second DC output bus 350.
  • the signal sent by the load includes the withstand voltage value of the load
  • the first controller may determine that the DC voltage of the second DC output bus 350 is the withstand voltage value of the load, and then adjust the output of the second AC/DC unit 320 to The output reaches the withstand voltage value.
  • the first controller may also determine the DC voltage of the second DC output bus 350 according to other methods, for example, determine the DC voltage of the second DC output bus 350 according to a preset algorithm.
  • the corresponding DC output bus voltage can be flexibly configured as required.
  • the DC output bus voltage can be adjusted in time to reduce line loss and increase the pull Far ability.
  • the power of single-bus power supply equipment must be configured above the sum of the peak power of all loads, which means that the total power of the configured AC/DC converter needs to be greater than the sum of the peak power of all loads.
  • most of the existing network equipment works below 50% of the rated power, and each load equipment will only have a very small probability of working at the peak power, so there will be a certain degree of "redundancy" in the AC/DC configuration.
  • FIG. 4 shows a schematic diagram of a power supply device 400 according to an embodiment of the present application.
  • the solution of the embodiment of the present application further includes: direct current/direct current (DC/DC) ) Unit 470, the bidirectional DC/DC unit 470 is connected between the first DC output bus 340 and the second DC output bus 350.
  • the power supply device 400 of the embodiment of the present application may further include other AC/DC units and multiple bidirectional DC/DC units, and the bidirectional DC/DC units may be respectively connected between the first DC output bus and other DC output buses.
  • the power supply device 400 of the embodiment of the present application may further include a third AC/DC unit 330 and a bidirectional DC/DC unit 480.
  • the input terminal of the third AC/DC unit 330 is connected to the AC input bus 110, and the output terminal of the third AC/DC unit 330 is connected to the third DC output bus 360.
  • the bidirectional DC/DC unit 480 is connected between the first DC output bus 340 and the third DC output bus 360.
  • multiple bidirectional DC/DC units can also be respectively connected between the second DC output bus and other DC output buses, that is, multiple DC output buses can be connected through multiple bidirectional DC/DC units.
  • the bidirectional DC/DC unit can be any device that can implement bidirectional DC conversion.
  • the bidirectional DC/DC unit can be a bidirectional DC/DC converter.
  • the embodiment of the present application does not limit the number of bidirectional DC/DC converters included in each bidirectional DC/DC unit.
  • the bidirectional DC/DC unit may include a single bidirectional DC/DC converter, or may be composed of multiple bidirectional DC/DC converters in parallel.
  • the power supply device 400 of the embodiment of the present application may further include a second controller, and the second controller may be used to control the bidirectional DC/DC unit to implement fault compensation between each DC output bus.
  • the second controller may be used to control the bidirectional DC/DC unit to implement fault compensation between each DC output bus.
  • the second controller determines that the first AC/DC unit 310 or the second AC/DC unit 320 is faulty, it enables the bidirectional DC/DC unit 470 to direct the DC output bus connected to the AC/DC unit that has not failed.
  • the DC output bus connected to the failed AC/DC unit supplies power.
  • the second controller determines that the first AC/DC unit 310 is faulty, it isolates the first AC/DC unit 310 and enables the bidirectional DC/DC unit 470 so as to transmit to the first DC through the second DC output bus 350.
  • the output bus 340 supplies power.
  • the second controller determines that the second AC/DC unit 320 is faulty, it isolates the second AC/DC unit 320, and enables the bidirectional DC/DC unit 470 to transmit to the second DC through the first DC output bus 340
  • the output bus 350 supplies power.
  • the second controller determines that the third AC/DC unit 330 is faulty, it isolates the third AC/DC unit 330 and enables the bidirectional DC/DC unit 480 to pass the first DC output bus 330 to The third DC output bus 360 provides power.
  • the second controller determines that the first AC/DC unit 310 is faulty, it isolates the first AC/DC unit 310, enables the bidirectional DC/DC unit 470 or enables the bidirectional DC/DC unit 480 to pass the second
  • the DC output bus 350 or the third DC output bus 360 supplies power to the first DC output bus 330.
  • the power supply device may further include a third controller, and the third controller may be used to control the bidirectional DC/DC unit to realize power compensation between the DC output buses. Furthermore, the extra power from the DC output bus can be provided to other DC output buses by controlling the bidirectional DC/DC unit.
  • the power of any DC output bus is insufficient, that is to say, the power supply capacity of the DC output bus is less than the load demand. At this time, the DC voltage on the DC output bus will drop, and the third controller enables the power supply connected to the DC output bus.
  • other DC output buses connected by the enabled bidirectional DC/DC unit compensate the power to the DC output buses with insufficient power through the bidirectional DC/DC unit.
  • the third controller enables the bidirectional DC/DC unit 470 to control the power compensation between the first DC output bus 340 and the second DC output bus 350 when determining that the power supply capacity of a certain DC output bus is less than the load requirement.
  • the third controller determines that the power supply capacity of the second DC output bus 350 is less than the load demand, for example, the third controller detects that the output voltage of the second AC/DC unit 320 drops and enables bidirectional DC/
  • the DC unit 470 controls the first DC output bus 340 to transmit energy to the second DC output bus 350 for power compensation.
  • the third controller determines that the power supply capacity of the first DC output bus 340 is less than the load demand, for example, the third controller detects that the output voltage of the first AC/DC unit 310 drops and enables bidirectional DC
  • the /DC unit 470 or the bidirectional DC/DC unit 480 is enabled to control the second DC output bus 350 or the third DC output bus 360 to transmit energy to the first DC output bus 340 for power compensation.
  • the problem of insufficient utilization of equipment power configuration at the existing site is solved.
  • the energy between the bus bars can be scheduled with each other to achieve power complementation in the low-probability peak power scenario, and achieve low-power single-channel configuration.
  • the design cost is reduced, and the single-point fault tolerance rate can be improved through power scheduling, and the reliability of power supply can be improved.
  • the output voltage of the backup unit of the 2/3/4G power supply system is -48V.
  • a set of power supply that is higher than the DC voltage of the single-bus power supply equipment is provided Equipment, at this time, the backup power unit of the single-bus power supply device cannot be used, and independent power backup and independent management are required.
  • the embodiment of the present application may include a backup unit 490, which can be connected to any DC output bus.
  • the backup unit 490 can be connected to the first DC output bus 340, and the remaining DC output buses are respectively connected to the first DC output bus 340 through a bidirectional DC/DC unit.
  • the output voltage of the power backup unit 490 can be the same as the DC voltage of the first DC output bus 340, and directly supplies power to the first DC output bus 340, and supplies power to other DC output buses through the bidirectional DC/DC unit.
  • the backup unit can be connected to the second DC output bus through an additional bidirectional DC/DC unit, and the remaining DC output buses can be connected to the first The two DC output buses are connected through a bidirectional DC/DC unit.
  • the power backup unit 490 can backup power for different DC output buses through the bidirectional DC/DC unit.
  • each DC output bus can share a set of backup power unit, and unified power backup and unified management can be realized by controlling the bidirectional DC/DC unit.
  • the power supply device may further include a fourth controller.
  • the first DC output bus 340 may be a stable output (it can also be said that the first AC/DC unit 310 is Stable output)
  • the backup unit 490 can be connected to the first DC output bus 340
  • the fourth controller can be used to bypass the bidirectional DC/DC unit 470 when it is determined that the bidirectional DC/DC unit 470 is faulty, and control
  • the second AC/DC unit 320 makes the DC voltage of the second DC output bus 350 equal to the voltage of the first DC output bus 340.
  • the first DC output bus 340 may be a stable output (it can also be said that the first AC/DC unit 310 For stable output), the backup unit 490 can be connected to the first DC output bus 340, and other DC output buses can be connected to the first DC output bus through multiple bidirectional DC/DC units respectively.
  • the two-way DC/DC unit can be bypassed, and the AC/DC unit can be adjusted to make the voltage of the DC output bus connected to the two-way DC/DC unit the same as the voltage of the first DC output bus and keep it constant , So that the DC output bus corresponding to the failed bidirectional DC/DC unit can still share the backup power unit, which improves the stability of power supply.
  • the first DC output bus 340 may be a stable output (it can also be said that the first AC/DC unit 310 is a stable output), and the backup unit 490 may be connected to the first DC output bus 340
  • the fourth controller can be used to bypass the bidirectional DC/DC unit 480 and control the third AC/DC unit 330 so that the DC voltage of the third DC output bus 360 is The DC voltage of the first DC output bus 340 is equal and remains constant, so that the third DC output bus that has failed can still share the power backup unit, which improves the stability of power supply.
  • the power supply device may further include a fifth controller configured to enable the bidirectional DC/DC unit when it is determined that the AC input bus is faulty, so that the backup unit can supply power to each DC output bus.
  • the first DC output bus 340 may be a stable output (it can also be said that the first AC/DC unit 310 is Stable output), the backup unit 490 can be connected to the first DC output bus 340.
  • the fifth controller can be used to enable the bidirectional DC/DC unit 470 when it is determined that the AC input bus 110 is faulty, so that the backup unit 490 can supply power to the second DC output bus 350.
  • the power backup unit 490 can directly supply power to the first DC output bus 340 at this time.
  • the first DC output bus 340 may be a stable output (it can also be said that the first AC/DC unit 310 For stable output), the backup unit 490 can be connected to the first DC output bus 340, and other DC output buses can be connected to the first DC output bus through a plurality of bidirectional DC/DC units.
  • all bidirectional DC/DC units can be enabled, so that the backup unit supplies power to each DC output bus through each bidirectional DC/DC unit.
  • each DC output bus can share a set of backup power unit, and by controlling the two-way DC/DC unit, unified power backup and unified management can be realized, thereby saving floor space.
  • the first controller, the second controller, the third controller, the fourth controller, and the fifth controller may be the same controller or different controllers.
  • the AC/DC unit, the bidirectional DC/DC unit, and the controller can all be inserted into the subrack, and signals are transmitted through the backplane of the subrack.
  • the AC/DC unit and two-way DC/DC unit can transmit voltage and current signals, alarm information, etc. to the controller through the backplane, and the controller can communicate voltage and switch to the AC/DC unit and two-way DC/DC unit through the backplane. command.
  • FIG. 5 shows another A schematic diagram of a power supply device 500 of an embodiment.
  • the power supply equipment 500 includes multiple AC/DC units, and the AC input bus 110 is divided into multiple paths to each AC/DC unit after passing through the lightning protection box SPD 120.
  • the first AC/DC unit is connected in parallel with M AC/DC converters 510 with stable outputs in the figure, M ⁇ 2, and M is a positive integer.
  • the output terminal of the first AC/DC unit is connected to the DC output bus A (ie, an example of the first DC output bus).
  • the second AC/DC unit is an AC/DC converter 520 with adjustable output, and its output terminal is connected to the DC output bus B1 (ie, an example of the second DC output bus).
  • the power supply equipment also includes other AC/DC units, such as the AC/DC converter 530 with adjustable output in Figure 5, the output of which is connected to the DC output bus BN; each DC output bus is connected to the corresponding power distribution unit.
  • the backup unit 590 is connected to the DC output bus A, and the DC output bus A and other DC output buses are respectively connected through a bidirectional DC/DC unit.
  • the DC output bus A and the DC output bus B1 are connected by a bidirectional DC/DC unit 570; the DC output bus A and the DC output bus BN are connected by a bidirectional DC/DC unit 580.
  • the monitoring unit SMU 540 (that is, an example of the controller) is responsible for managing the work of each module in the system.
  • the AC/DC converter with adjustable output and the bidirectional DC/DC unit can be controlled by the monitoring unit SMU 540, that is to say, monitoring
  • the unit SMU 540 can be used as the first controller, the second controller, the third controller, the fourth controller, and the fifth controller at the same time.
  • the voltage of the DC output bus A can be the -48V bus voltage of the 2/3/4G power system, which provides power for the traditional communication power supply.
  • it can be connected to traditional communication equipment such as baseband unit (BBU) and 2 ⁇ 3 ⁇ 4G.
  • BBU baseband unit
  • the backup power unit can be a backup battery; other DC output buses can respectively supply power to independent base station equipment.
  • the monitoring unit SMU 540 manages the work of each module in the power supply equipment, which can specifically include:
  • the power compensation between each DC output bus is specifically as follows: when the output power of DC output bus A is insufficient, the excess power of DC output bus B1-BN can be provided to DC output bus A through the bidirectional DC/DC unit; DC output bus B1 -When the power of any DC output bus in BN is insufficient, the DC output bus A can compensate the power to the DC output bus with insufficient power through the bidirectional DC/DC unit.
  • the fault compensation between each DC output bus specifically includes: In addition to the AC/DC converter 510 on the DC output bus A, when any other AC/DC converter fails, the fault can be isolated, and the AC/DC can be enabled and failed.
  • the bidirectional DC/DC unit connected to the DC converter is replaced by the DC output bus A through the bidirectional DC/DC unit to provide power to the load on the DC output bus connected to the failed AC/DC converter; when the DC output bus A M AC/DC converters 510 are all faulty, any bidirectional DC/DC unit can be enabled, and other DC output buses provide power to the load on the DC output bus A through the bidirectional DC/DC unit.
  • Unified backup means that each DC output bus shares a set of backup unit.
  • the backup power unit 590 is connected to the DC output bus A to directly provide power to the DC output bus A, and through each bidirectional DC/DC unit to provide power to other DC output buses.
  • control the bypass of the bidirectional DC/DC unit and adjust the AC/DC converter connected to the bidirectional DC/DC unit (the AC/DC converter on the side of the non-connected backup power unit) make it consistent with the DC voltage of the DC output bus A to ensure that the DC output bus can share the backup power unit.
  • the bidirectional DC/DC unit is enabled so that the backup unit can supply power to each DC output bus.
  • the power supply device in the embodiment of the present application can replace the single-bus power supply device, that is, the voltage DC output bus A can be used to power traditional communication devices, and other DC output buses can supply power to other extended base station devices.
  • the single bus power supply equipment can also be reserved for supplying power to the DC output bus A.
  • multiple AC/DC units and bidirectional DC/DC units can be added, for example, the second AC/DC unit and the third AC /DC unit, etc., respectively output to different DC output buses, and supply power for different loads.
  • the power supply device in the embodiment of the present application can also be superimposed on the single bus power supply device.
  • the voltage DC output bus A can be used as an expansion port, and the power supply device of the embodiment of the present application is superimposed on a single bus power supply device to realize power superposition and share the power backup unit.
  • the backup power unit may be the original backup power supply unit of the single-bus power supply equipment, that is, when the power supply equipment in the embodiment of the present application is superimposed on the single-bus power supply equipment, other backup power units are not additionally introduced.
  • Fig. 6 shows a schematic diagram of a power supply device superimposed on a single bus power supply device according to an embodiment of the present application.
  • the DC output bus A of the single-bus power supply device 600 is connected to the backup power unit 690.
  • the backup power unit 690 may be the original backup power unit 690 of the single-bus power supply device 600.
  • the DC output bus A of the device (ie, the multi-bus power supply device 700 and the multi-bus power supply device 800 in the figure) is connected in parallel with the DC output bus A of the single-bus power supply device 600, that is, the input end of the single-bus power supply device 600 and the local
  • the input ends of the multi-bus power supply device 700 and the multi-bus power supply device 800 of the embodiment of the application are connected to the same AC input bus 110, and the DC output bus A of the multi-bus power supply device 700 and the DC output of the multi-bus power supply device 800 of the embodiment of the present application
  • Bus A and the DC output bus A of the single-bus power supply device 600 are output as the same DC output bus, thereby realizing fast superposition of the power supply equipment, and obtaining DC output bus A, DC output bus B1 to DC output bus BN, and DC output bus C1 to DC output bus CL, etc.
  • the foregoing manner can also implement the superposition of multiple power supply devices in the embodiments of the
  • the embodiment of this application supports rapid superposition and capacity expansion with a single bus power supply device or multiple power supply devices in the embodiments of this application, and can support unified backup and unified management of all power supply devices, and can be applied to 5G new or superposition scenarios , Utilizing the backup battery of the single-bus power supply equipment, at the same time, it can realize the rapid superposition and capacity expansion without DC power distribution transformation, which is applicable to the subsequent evolution and expansion 5G or 2/3/4G scenarios.
  • the solution of the embodiment of this application can not only meet the voltage regulation and energy saving required by 5G power supply, but also retain 2/3/4G power supply equipment.
  • the power between the systems can be dispatched with each other, unified management, unified power backup, and achieves energy saving and consumption reduction, fast and simple deploy.
  • the control method of the power supply device includes: determining the AC/DC unit failure, isolating the failed AC/DC unit, enabling the bidirectional DC/DC unit, and Power is supplied to the DC output bus connected to the failed AC/DC unit through the DC output bus connected to the non-faulty AC/DC unit.
  • the control method of the power supply equipment includes: determining any AC/DC unit failure (if the AC/DC unit is connected to multiple AC/DC converters in parallel, the AC/DC When all the AC/DC converters of the unit are faulty), the faulty AC/DC unit can be isolated; the two-way DC/DC unit connected to the faulty AC/DC unit is enabled, and the other connected to the two-way DC/DC unit
  • the DC output bus provides power to the load on the DC output bus corresponding to the failed AC/DC unit via the bidirectional DC/DC unit.
  • FIG. 7 shows a schematic diagram of a method 900 for controlling a power supply device according to an embodiment of the present application.
  • the power supply device 400 includes the first AC/DC unit 310 and the second AC/DC unit 320 as an example to illustrate the control method 900 of the power supply device.
  • the control method 900 includes:
  • Step 910 Determine that the first AC/DC unit 310 is faulty, and isolate the first AC/DC unit 310;
  • Step 920 Enable the bidirectional DC/DC unit 470 to supply power to the first DC output bus 340 through the second DC output bus 350. It should be understood that the above control method 900 may also include: step 910, determining that the second AC/DC unit 320 is faulty, and isolating the second AC/DC unit 320; enabling the bidirectional DC/DC unit 470 to pass the first DC output bus 340 supplies power to the second DC output bus 350.
  • the power supply device 400 further including the third AC/DC unit 330 as an example for description.
  • the third AC/DC unit 330 is faulty, and the third AC/DC unit 330 is isolated; the bidirectional DC/DC unit 480 is enabled to pass the first DC output bus 330 to the third DC output bus 360 powered by.
  • the bidirectional DC/DC unit 470 or the bidirectional DC/DC unit 480 are enabled to pass through the second DC output bus 350 or The three DC output bus 360 supplies power to the first DC output bus 330.
  • multiple AC/DC units are used to output to multiple DC output buses, and the multiple DC output buses can output independently to supply power for different types of loads.
  • This multi-bus power supply solution can target different types of loads. Configure the corresponding DC output bus voltage.
  • boosting voltage can reduce line loss.
  • Different loads have different boosting requirements.
  • This multi-bus solution can meet the boosting requirements of different loads, reduce line loss, achieve end-to-end efficiency optimization, and improve remote capability.
  • the control method 900 of the power supply device may further include: determining that the power supply capacity of the first DC output bus or the second DC output bus is less than the load demand; enabling the bidirectional DC/DC unit to control the first DC output Power compensation between the bus and the second DC output bus.
  • the control method 900 of the power supply device includes: determining that any DC output bus has insufficient power, that is to say, the power supply capacity of the DC output bus is less than the load demand, and then the DC output bus The DC voltage will drop; enable the two-way DC/DC unit connected to the DC output bus, and the other DC output buses connected to the enabled two-way DC/DC unit will compensate the power to the insufficient power through the two-way DC/DC unit DC output bus.
  • the power supply device includes a first AC/DC unit 310 and a second AC/DC unit 320 as an example for description.
  • the bidirectional DC/DC unit 470 is enabled to control the power compensation between the first DC output bus 340 and the second DC output bus 350.
  • the bidirectional DC/DC unit 470 is enabled to control the first DC/DC unit.
  • the current output bus 340 transmits energy to the second DC output bus 350 for power compensation.
  • the power supply device 400 further including the third AC/DC unit 330 as an example for description.
  • the third AC/DC unit 330 As shown in FIG. 4, when it is determined that the power supply capacity of the first DC output bus 340 is less than the load demand, for example, a drop in the output voltage of the first AC/DC unit 310 is monitored, and the bidirectional DC/DC unit 470 is enabled or the bidirectional DC/DC unit is enabled.
  • the DC unit 480 controls the second DC output bus 350 or the third DC output bus 360 to transmit energy to the first DC output bus 330 for power compensation.
  • the power supply device includes a first AC/DC unit and a second AC/DC unit.
  • the control method 900 of the power supply device may further include: determining a bidirectional DC/DC unit failure; bypassing The two-way DC/DC unit that failed; the second AC/DC unit is adjusted so that the DC voltage of the second DC output bus is the same as the DC voltage of the first DC output bus.
  • the control method 900 of the power supply device will be described with reference to FIG. 4, determining that the bidirectional DC/DC unit 470 is faulty, bypassing the bidirectional DC/DC unit 470, and controlling the second AC/DC unit 320 so that the second DC output bus 350 The voltage is equal to the voltage of the first DC output bus 340.
  • the backup power unit is connected to the first DC output bus, and other DC output buses can pass through multiple bidirectional DC/DC units.
  • the DC units are respectively connected to the first DC output bus.
  • the control method 900 of a power supply device includes: determining a bidirectional DC/DC unit failure, bypassing the bidirectional DC/DC unit, and adjusting the AC/DC unit so that the voltage of the DC output bus connected to the bidirectional DC/DC unit The voltage of the current output bus is the same and remains constant, so that the DC output bus corresponding to the failed bidirectional DC/DC unit can still share the backup unit, which improves the stability of power supply.
  • the power backup unit 490 can be connected to the first DC output bus 340.
  • the control method of the power supply device 900 in the embodiment of the present application includes: determining that the bidirectional DC/DC unit 480 is faulty, bypassing the bidirectional DC/DC unit 480, and controlling the third AC/DC unit 330 so that the third DC output bus 360 The voltage is equal to the voltage of the first DC output bus 340.
  • the control method 900 of the power supply device may further include: determining that the AC input bus is faulty, and enabling the bidirectional DC/DC unit, so that the power backup unit supplies power to each DC output bus.
  • each DC output bus can share a set of backup power unit, and by controlling the two-way DC/DC unit, unified power backup and unified management can be realized, thereby saving floor space.
  • the power supply device provided by the embodiment of the application supports both 2/3/4G system power supply and the new 5G system power supply, and the independent output of the 5G power supply is adjustable and can be flexibly configured. For 5G high power consumption scenarios, it can be adjusted
  • the bus voltage effectively reduces line loss, improves remote capability, and optimizes end-to-end efficiency.
  • the power scheduling between each DC output bus can compensate for the power demand of a single bus in a low probability peak power scenario, so as to reduce the need for a single power configuration and reduce the design cost.
  • Unified backup and unified network management reduces system components and floor space when superimposing or building new stations, supports rapid superimposition and capacity expansion, and does not require DC interface modification in superimposed scenarios, enabling rapid deployment of 5G site power.
  • the foregoing embodiments can be implemented in whole or in part by software, hardware, firmware or any other combination.
  • the above-mentioned embodiments may be implemented in the form of a computer program product in whole or in part.
  • the computer program product includes one or more computer instructions or computer programs.
  • the computer instructions or computer programs are loaded or executed on a computer, the processes or functions described in the embodiments of the present application are generated in whole or in part.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • 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. For example, the computer instructions may be transmitted from a website, computer, server, or data center.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center that includes one or more sets of available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium.
  • the semiconductor medium may be a solid state drive.
  • the size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, rather than corresponding to the embodiments of the present application.
  • the implementation process constitutes any limitation.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • the functional units in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit. If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of this application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory, random access memory, magnetic disk or optical disk and other media that can store program codes.

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Abstract

本申请实施例提供了一种供电设备及控制方法，供电设备包括第一AC/DC单元和第二AC/DC单元，第一AC/DC单元的输入端和第二AC/DC单元的输入端连接至交流输入母线，第一AC/DC单元的输出端连接至第一直流输出母线，第一AC/DC单元为稳定输出的，第二AC/DC单元的输出端连接至第二直流输出母线；通过多个AC/DC单元输出至多条直流输出母线分别为不同负载供电，可以针对不同负载配置相应的母线电压，满足不同负载升压需求。供电设备还包括双向DC/DC单元和备电单元，双向DC/DC单元连接于各直流输出母线之间，备电单元输出端连接至第一直流输出母线，能够实现统一备电，统一管理。

Description

一种供电设备及控制方法
本申请要求于2019年07月30日提交中国专利局、申请号为201910693057.7、申请名称为“一种供电设备及控制方法”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请实施例涉及供电领域，并且更具体地，涉及供电设备及控制方法。
背景技术
随着第五代(5th generation，5G)系统通信技术的发展，站点的更深度覆盖和更多热点覆盖导致站点数量猛增，加上5G通讯设备功耗较大，站点电源系统的快速简单部署和节能降耗成为两大挑战。
大功率基站设备存在拉远能力不足、线缆损耗大等问题，现有技术通常通过提升供电母线的电压解决上述问题，然而，不同拉远负载的升压需求存在差异，现有的电源系统不能针对不同输出负载单独调压，导致供电母线的升压空间受限，供电效率不高。
发明内容
本申请实施例提供一种供电设备及控制方法，能够分别为不同的负载供电，优化端对端效率。
第一方面，提供了一种供电设备，包括：第一交流/直流AC/DC单元，所述第一AC/DC单元的输入端连接至交流输入母线，所述第一AC/DC单元的输出端连接至第一直流输出母线；第二AC/DC单元，所述第二AC/DC单元的输入端连接至所述交流输入母线，所述第二AC/DC单元的输出端连接至第二直流输出母线。
根据本申请实施例的方案，通过多个AC/DC单元输出至多条直流输出母线，多条直流输出母线能够独立输出，分别为不同类型负载供电，这种多母线供电方案可以针对不同类型负载配置相应的直流输出母线电压。
同时，对于远距离的负载而言，提升电压能够降低线损。而不同的负载的升压需求不同，这种多母线方案能够满足不同负载的升压需求，降低线损，实现端对端效率优化，提升拉远能力。
结合第一方面，在第一方面的某些实现方式中，所述第一直流输出母线与所述第二直流输出母线的电压不同。
结合第一方面，在第一方面的某些实现方式中，所述第二AC/DC单元是输出可调的，以及所述供电设备还包括第一控制器，所述第一控制器用于确定所述第二直流输出母线上的直流电压，并根据所述直流电压调节所述第二AC/DC单元。
根据本申请实施例的方案，通过输出可调的AC/DC单元，能够根据需要灵活配置对 应的直流输出母线电压，在负载发生变化时，能够及时调整直流输出母线电压，降低线损，提升拉远能力。
结合第一方面，在第一方面的某些实现方式中，所述供电设备还包括：双向直流/直流DC/DC单元，所述双向DC/DC单元连接于所述第一直流输出母线和所述第二直流输出母线之间。
结合第一方面，在第一方面的某些实现方式中，所述供电设备还包括第二控制器，所述第二控制器用于在确定所述第一AC/DC单元故障时，使能所述双向DC/DC单元，以通过第二直流输出母线向第一直流输出母线供电。
根据本申请实施例的方案，通过控制双向DC/DC单元，能够实现各直流输出母线之间的故障补位，进一步提高了供电的可靠性。
结合第一方面，在第一方面的某些实现方式中，所述供电设备还包括第三控制器，所述第三控制器用于在确定所述第一直流输出母线供电能力小于负载需求时，使能所述双向DC/DC单元，以控制所述第一直流输出母线和所述第二直流输出母线之间的功率补偿。
根据本申请实施例的方案，通过控制双向DC/DC单元，能够实现各直流输出母线间的能量调度，解决在现有站点上设备功率配置利用率不足的问题，实现小概率峰值场景的功率互补，实现单路配置低功率，降低设计成本，且功率调度可以提升单点故障容错率，提升供电可靠性。
结合第一方面，在第一方面的某些实现方式中，所述第一AC/DC单元为稳定输出的AC/DC单元，以及所述供电设备还包括：备电单元，所述备电单元的直流输出端与所述第一直流输出母线相连。
结合第一方面，在第一方面的某些实现方式中，所述供电设备还包括第四控制器，所述第四控制器用于在确定所述双向DC/DC单元故障时，控制第二AC/DC单元，以使第二直流输出母线的直流电压与第一直流输出母线的电压相等。
结合第一方面，在第一方面的某些实现方式中，所述供电设备还包括第五控制器，所述第五控制器用于在确定所述交流输入母线故障时，使能所述双向DC/DC单元，以使所述备电单元为所述第二直流输出母线供电。
根据本申请实施例的方案，各直流输出母线能够共用一套备电单元，通过控制双向DC/DC单元可以实现统一备电，统一管理，节约占地面积。
所述第一控制器、第二控制器、第三个控制器、第四控制器和第五控制器可以为同一个控制器。
第二方面，提供了一种供电设备的控制方法，所述供电设备包括第一AC/DC单元、第二AC/DC单元、双向直流/直流DC/DC单元和备电单元，所述第一AC/DC单元的输入端连接至交流输入母线，所述第一AC/DC单元的输出端连接至第一直流输出母线，所述第一AC/DC单元为稳定输出的AC/DC单元，所述第二AC/DC单元的输入端连接至所述交流输入母线，所述第二AC/DC单元的输出端连接至第二直流输出母线，所述第二AC/DC单元是输出可调的，所述双向DC/DC单元连接于第一直流输出母线和第二直流输出母线之间，所述备电单元的直流输出端与第一直流输出母线相连，
所述方法包括：
确定所述第一AC/DC单元故障；
使能所述双向DC/DC单元，以通过所述第二直流输出母线向所述第一直流输出母线供电。
结合第二方面，在第二方面的某些实现方式中，所述方法还包括：
确定所述第二AC/DC单元故障；
使能所述双向DC/DC单元，以通过所述第一直流输出母线向所述第二直流输出母线供电。
根据本申请实施例提供的方案，通过多个AC/DC单元输出至多条直流输出母线，多条直流输出母线能够独立输出，分别为不同类型负载供电，这种多母线供电方案可以针对不同类型负载配置相应的直流输出母线电压。
同时，对于远距离的负载而言，提升电压能够降低线损。而不同的负载的升压需求不同，这种多母线方案能够满足不同负载的升压需求，降低线损，实现端对端效率优化，提升拉远能力。
此外，通过控制双向DC/DC单元，能够实现各直流输出母线间的故障补位，进一步保证稳定供电。
结合第二方面，在第二方面的某些实现方式中，所述方法还包括：确定所述第一直流输出母线供电能力小于负载需求；使能所述双向DC/DC单元，以控制所述第一直流输出母线和所述第二直流输出母线之间的功率补偿。
结合第二方面，在第二方面的某些实现方式中，所述方法还包括：确定所述第二直流输出母线供电能力小于负载需求；使能所述双向DC/DC单元，以控制所述第一直流输出母线和所述第二直流输出母线之间的功率补偿。
根据本申请实施例提供的方案，通过控制双向DC/DC单元，能够实现各直流输出母线间的能量调度，解决在现有站点上设备功率配置利用率不足的问题，实现小概率峰值场景的功率互补，实现单路配置低功率，降低设计成本，且功率调度可以提升单点故障容错率，提升供电可靠性。
结合第二方面，在第二方面的某些实现方式中，所述方法还包括：确定所述双向DC/DC单元故障；旁路所述双向DC/DC单元；调节所述第二AC/DC单元，以使第二直流输出母线的直流电压与第一直流输出母线的直流电压相同。
结合第二方面，在第二方面的某些实现方式中，所述方法还包括：确定所述交流输入母线故障；使能所述双向DC/DC单元，以使所述备电单元为所述第二直流输出母线供电。
根据本申请实施例的方案，各直流输出母线能够共用一套备电单元，通过控制双向DC/DC单元可以实现统一备电，统一管理，节约占地面积。
附图说明
图1是单母线供电设备的示意图。
图2是升压供电设备的示意图。
图3是本申请一个实施例的供电设备的示意图。
图4是本申请另一实施例的供电设备的示意图。
图5是本申请另一实施例的供电设备的示意图。
图6是根据本申请的一个实施例的供电设备与单母线供电设备叠加的示意图。
图7是本申请一个实施例的控制方法的示意图。
具体实施方式
下面将结合附图，对本申请实施例中的技术方案进行描述。
本申请实施例的技术方案可以应用于同时对需要不同电压的负载独立供电的系统，例如未来的第五代(5th generation，5G)系统新建或叠加场景。
第2代系统(2nd generation，2G)/第3代系统(3rd generation，3G)/第4代系统(4th generation，4G)的电源系统为单母线供电设备。图1示出了单母线供电设备100的架构示意图。
如图1所示，交流输入母线110经浪涌保护器120(surge protective device，SPD)与多个交流/直流(alternative current/direct current，AC/DC)变换器130相连。SPD 120也可以称为防雷盒。多个AC/DC变换器130并联输出，与备电单元140合路到直流输出母线150上。经配电单元170(power distribution unit，PDU)为所有负载供电。单母线供电设备可以由系统管理单元160(system management unit，SMU)进行管理。
在部署5G电源系统时，由于5G功耗大，为降低线损一般会采用升压供电。
对于单母线供电设备容量足够的场景，可以直接在单母线供电设备的直流输出母线上增加升压电路以用于为5G设备供电。图2示出了一种单母线升压供电设备200的示意图，升压设备200是在单母线供电设备100的基础上增加直流升压单元180(boosted voltage direct current，BVDC)，串联在AC/DC变换器130输出和配电单元PDU 170之间。BVDC180将直流输出母线150电压升压到需要的电压。
对于单母线供电设备容量不够的场景，则在单母线供电设备上叠加AC/DC变换器和BVDC，也就是说不在母线上升压，得到一套较高直流输出母线电压的单母线供电设备。直流输出母线电压会高于2/3/4G电源系统的-48V直流输出母线电压。
然而，所有负载由同一根母线供电，不能针对不同类型负载单独调压，只能统一升压，升压空间受限，不利于降低线损，无法达到较优的单负载端对端效率。此外，通过BVDC180串联在直流输出母线150上给5G设备供电，会在直流输出母线150上增加一个故障点，降低供电的可靠性，且增加了BVDC模块本身的损耗和成本。
图3示出了本申请一个实施例的供电设备300的示意图。图3的供电设备300包括第一AC/DC单元310和第二AC/DC单元320。第一AC/DC单元310的输入端连接至交流输入母线110。第一AC/DC单元310的输出端连接至第一直流输出母线340。第二AC/DC单元320的输入端连接至交流输入母线110。第二AC/DC单元320的输出端连接至第二直流输出母线350。
其中，第一AC/DC单元310和第二AC/DC单元320可以为能够实现交流转直流的任意单元，例如，AC/DC变换器。另外，本申请实施例对每个AC/DC单元内所包括的AC/DC变换器的数目不作限制。例如，AC/DC单元可以包括单个AC/DC变换器，也可以由多个AC/DC变换器并联组成。
需要说明的是，本申请实施例的方案中并不仅限于两个AC/DC单元，还可以包括其他AC/DC单元。其他AC/DC单元可以类似于第一AC/DC单元310和第二AC/DC单元320，其输入端可以连接至交流输入母线，输出端连接至各自不同的直流输出母线。例如， 该供电设备300还可以包括第三AC/DC单元330，第三AC/DC单元330的输入端连接至交流输入母线110，第三AC/DC单元330的输出端连接至第三直流输出母线360。
各直流输出母线可以分别连接对应的配电单元PDU或负载，也就是说各直流输出母线可以直接为负载供电或经过配电单元PDU为负载供电。
根据本申请实施例的方案，通过多个AC/DC单元输出至多条直流输出母线，多条直流输出母线能够独立输出，分别为不同类型负载供电，这种多母线供电方案可以针对不同类型负载配置相应的直流输出母线电压。
同时，对于远距离的负载而言，提升电压能够降低线损。而不同的负载的升压需求不同。例如对拉远负载而言，为降低线损，其升压需求较高。在单母线供电的方案中，升压空间受限，例如受到某一负载的耐压值限制。升压空间受限也就无法更好地降低线损。本申请实施例的这种多母线方案能够满足不同负载的升压需求，不受其他直流输出母线上负载的限制，能够较好地降低线损，实现端对端效率优化，提升拉远能力。
此外，相对于需要在母线上引入升压单元的升压方式，本申请实施例的方案没有在母线上引入其他单元，也就没有在母线上引入新的故障点，保证了供电的可靠性，降低了设计成本。在母线上没有引入新的故障点，保证了供电的可靠性，降低了设计成本。
应理解，第一AC/DC单元310和第二AC/DC单元320的输入端连接至交流输入母线110，其连接关系不限于AC/DC单元与交流输入母线110直接相连，还可以为交流输入母线110经由其他模块输出至AC/DC单元。例如，交流输入母线可以经过SPD 120连接至各AC/DC单元。图3中SPD 120的位置关系仅为示意，例如，浪涌保护器120也可以设置在供电设备300内部。
第一AC/DC单元310和第二AC/DC单元320的输出端分别连接至两条直流输出母线，其连接关系不限于AC/DC单元与直流输出母线直接相连，也可以为AC/DC单元经由其他模块与直流输出母线相连。
该第一直流输出母线340与第二直流输出母线350的电压可以根据负载的不同进行配置，也就是说第一直流输出母线340的输出电压与第二直流输出母线350的输出电压可以相同，也可以不同。
AC/DC单元可以包括稳定输出的AC/DC单元和/或输出可调的AC/DC单元。例如，第一AC/DC单元310可以为稳定输出的AC/DC单元，第二AC/DC单元320可以为输出可调的AC/DC单元。该供电设备还可以包括第一控制器，该第一控制器可以用于控制该第二AC/DC单元，需要说明的是，该第一控制器和第二AC/DC单元320可以为分别单独设置的，也可以集成在一起，例如，该第一控制器集成于第二AC/DC单元320内。该第一控制器可以用于确定第二直流输出母线350上的直流电压，并根据直流电压调节第二AC/DC单元320。如果该供电设备还包括第三AC/DC单元330，第三AC/DC单元330可以为输出可调的AC/DC单元。第一控制器也可以用于控制第三AC/DC单元330。第一控制器可以用于确定第三直流输出母线360上的直流电压，并根据该直流电压调节第三AC/DC单元330。当然，也可以由其他控制器控制第三AC/DC单元330。
作为示例而非限定，该第一控制器可以根据第二直流输出母线350上的负载发送的信号确定第二直流输出母线350的直流电压。例如负载发送的信号包括该负载的耐压值，该第一控制器可以确定第二直流输出母线350的直流电压为该负载的耐压值，进而调节第二 AC/DC单元320的输出使其输出达到该耐压值。当然，该第一控制器也可以根据其他方式确定第二直流输出母线350的直流电压，例如根据预设算法确定第二直流输出母线350的直流电压。
根据本申请实施例的方案，通过输出可调的AC/DC单元，能够根据需要灵活配置对应的直流输出母线电压，在负载发生变化时，能够及时调整直流输出母线电压，降低线损，提升拉远能力。
单母线供电设备功率必须按所有负载峰值功率之和以上配置，也就是说配置的AC/DC变换器的总功率需要大于所有负载峰值功率之和。而现网设备大部分工作在50％额定功率以下，各个负载设备只会有非常小概率的时间工作在峰值功率，所以会造成AC/DC的配置存在一定“冗余”。
因此，图4示出了本申请一个实施例的供电设备400的示意图，在供电设备300的基础上，本申请实施例的方案还包括：双向直流/直流(direct curren/direct current，DC/DC)单元470，该双向DC/DC单元470连接于第一直流输出母线340和第二直流输出母线350之间。本申请实施例的供电设备400还可以包括其他AC/DC单元以及多个双向DC/DC单元，则双向DC/DC单元分别可以连接于第一直流输出母线和其他直流输出母线之间。例如，如图4所示，本申请实施例的供电设备400还可以包括第三AC/DC单元330和双向DC/DC单元480。第三AC/DC单元330的输入端连接至交流输入母线110，第三AC/DC单元330的输出端连接至第三直流输出母线360。双向DC/DC单元480连接于第一直流输出母线340和第三直流输出母线360之间。当然，多个双向DC/DC单元也可以分别连接于第二直流输出母线和其他直流输出母线之间，也就是说多条直流输出母线可以通过多个双向DC/DC单元实现连接。
需要说明的是，双向DC/DC单元可以为能够实现双向直流变换的任意器件，例如，该双向DC/DC单元可以为双向DC/DC变换器。另外，本申请实施例对每个双向DC/DC单元内所包括的双向DC/DC变换器的数量不作限制。例如，双向DC/DC单元可以包括单个双向DC/DC变换器，也可以由多个双向DC/DC变换器并联组成。
本申请实施例的供电设备400还可以包括第二控制器，该第二控制器可以用于控制双向DC/DC单元以实现各直流输出母线之间故障补位。进一步说，任一AC/DC单元故障时(若为该AC/DC单元为多个AC/DC变换器并联时，则该AC/DC单元的所有AC/DC变换器均故障时)，可以隔离故障的AC/DC单元，使能与故障的AC/DC单元相连的双向DC/DC单元，使与该双向DC/DC单元相连的其他直流输出母线经双向DC/DC单元为该故障的AC/DC单元对应的直流输出母线上的负载提供功率。
以供电设备400包括第一AC/DC单元310和第二AC/DC单元320为例进行说明。第二控制器在确定第一AC/DC单元310或第二AC/DC单元320故障时，使能双向DC/DC单元470，以通过未发生故障的AC/DC单元所连接的直流输出母线向发生故障的AC/DC单元所连接的直流输出母线供电。例如，第二控制器在确定该第一AC/DC单元310故障时，隔离第一AC/DC单元310，使能双向DC/DC单元470，以通过第二直流输出母线350向第一直流输出母线340供电。再例如，第二控制器在确定第二AC/DC单元320故障时，隔离第二AC/DC单元320，使能双向DC/DC单元470，以通过第一直流输出母线340向第二直流输出母线350供电。
再以供电设备400还包括第三AC/DC单元330为例进行说明。如图4所示，第二控制器在确定第三AC/DC单元330故障时，隔离第三AC/DC单元330，使能双向DC/DC单元480，以通过第一直流输出母线330向第三直流输出母线360供电。再例如，第二控制器在确定第一AC/DC单元310故障时，隔离第一AC/DC单元310，使能双向DC/DC单元470或使能双向DC/DC单元480，以通过第二直流输出母线350或第三直流输出母线360向第一直流输出母线330供电。
根据本申请实施例的方案，通过控制双向DC/DC单元，能够实现各直流输出母线之间的故障补位，进一步提高了供电的可靠性。
该供电设备还可以包括第三控制器，第三控制器可以用于控制双向DC/DC单元以实现各直流输出母线之间的功率补偿。进一步说，直流输出母线多出的功率可以通过控制双向DC/DC单元提供给其他直流输出母线。任一直流输出母线功率不足时，也就是说该直流输出母线上的供电能力小于负载需求，此时该直流输出母线上的直流电压会下跌，第三控制器使能该直流输出母线所连接的双向DC/DC单元，由被使能的双向DC/DC单元所连接的其他直流输出母线通过双向DC/DC单元补偿功率给功率不足的直流输出母线。
以该供电设备包括第一AC/DC单元310和第二AC/DC单元320为例进行说明。第三控制器在确定某一直流输出母线供电能力小于负载需求时，使能该双向DC/DC单元470，以控制第一直流输出母线340和第二直流输出母线350之间的功率补偿。作为示例而非限定，该第三控制器在确定第二直流输出母线350供电能力小于负载需求时，例如第三控制器监测到第二AC/DC单元320的输出电压下跌，使能双向DC/DC单元470，以控制该第一直流输出母线340向第二直流输出母线350输送能量，进行功率补偿。
再以供电设备400还包括第三AC/DC单元330为例进行说明。如图4所示，该第三控制器在确定第一直流输出母线340供电能力小于负载需求时，例如第三控制器监测到第一AC/DC单元310的输出电压下跌，使能双向DC/DC单元470或使能双向DC/DC单元480，以控制该第二直流输出母线350或第三直流输出母线360向第一直流输出母线340输送能量，进行功率补偿。
根据本申请实施例的方案，解决在现有站点上设备功率配置利用率不足的问题，各母线之间的能量可以互相调度，实现小概率峰值功率场景的功率互补，实现单路配置低功率，降低设计成本，而且通过功率调度可以提升单点故障容错率，提升供电的可靠性。
此外，如上所述，2/3/4G电源系统的备电单元的输出电压为-48V，对于单母线供电设备容量不够的场景时，提供了一套高于单母线供电设备的直流电压的供电设备，此时无法使用单母线供电设备的备电单元，需要独立备电、独立管理。对于包含不同直流输出母线电压的电源设备，若独立备电、独立管理，各成一套系统，也就是为每条直流输出母线配置备电单元，则会导致叠加或新建站时部件多、占地空间大。
如图4所示，本申请实施例可以包括备电单元490，备电单元490可以与任一直流输出母线相连，例如，第一AC/DC单元310为稳定输出的AC/DC单元时，备电单元490的直流输出端可以和第一直流输出母线340相连，其余直流输出母线分别与第一直流输出母线340通过双向DC/DC单元相连。备电单元490的输出电压可以和第一直流输出母线340的直流电压相同，直接为第一直流输出母线340备电，并通过双向DC/DC单元为其他直流输出母线备电。再例如，第二AC/DC单元320为输出可调的AC/DC单元时，备电单元 可以通过另外增设的双向DC/DC单元与第二直流输出母线相连，其余直流输出母线可以分别与第二直流输出母线通过双向DC/DC单元相连。备电单元490可以通过双向DC/DC单元为不同的直流输出母线备电。
因此，各直流输出母线可以共用一套备电单元，通过控制双向DC/DC单元可以实现统一备电，统一管理。
该供电设备还可以包括第四控制器。以该供电设备400包含第一AC/DC单元310和第二AC/DC单元320为例进行说明，第一直流输出母线340可以为稳定输出的(也可以说第一AC/DC单元310为稳定输出的)，该备电单元490可以和第一直流输出母线340相连，该第四控制器可以用于在确定双向DC/DC单元470故障时，旁路双向DC/DC单元470，控制第二AC/DC单元320，以使第二直流输出母线350的直流电压与第一直流输出母线340的电压相等。作为示例而非限定，当该供电设备还包括其他AC/DC单元和多个双向DC/DC单元时，第一直流输出母线340可以为稳定输出的(也可以说第一AC/DC单元310为稳定输出的)，备电单元490可以和第一直流输出母线340相连，其他直流输出母线可以通过多个双向DC/DC单元分别与第一直流输出母线相连，在出现双向DC/DC单元故障时，可以旁路该双向DC/DC单元，并通过调节AC/DC单元使得与该双向DC/DC单元相连的直流输出母线的电压和第一直流输出母线的电压相同，并保持恒定，从而使得发生故障的双向DC/DC单元对应的直流输出母线仍能共用备电单元，提高了供电的稳定性。
再以供电设备400还包括第三AC/DC单元330为例进行说明。如图4所示，第一直流输出母线340可以为稳定输出的(也可以说第一AC/DC单元310为稳定输出的)，该备电单元490可以和第一直流输出母线340相连，该第四控制器可以用于在确定双向DC/DC单元480故障时，旁路双向DC/DC单元480，控制第三AC/DC单元330，以使第三直流输出母线360的直流电压与第一直流输出母线340的直流电压相等，并保持恒定，从而使得发生故障的第三直流输出母线仍能共用备电单元，提高了供电的稳定性。
该供电设备还可以包括第五控制器，第五控制器用于在确定所述交流输入母线故障时，使能双向DC/DC单元，以使备电单元能够为各直流输出母线供电。
以该供电设备400包含第一AC/DC单元310和第二AC/DC单元320为例进行说明，第一直流输出母线340可以为稳定输出的(也可以说第一AC/DC单元310为稳定输出的)，该备电单元490可以和第一直流输出母线340相连。该第五控制器可以用于在确定交流输入母线110故障时，使能双向DC/DC单元470，以使备电单元490能够为所述第二直流输出母线350供电。当然，此时备电单元490可以直接为第一直流输出母线340供电。作为示例而非限定，当该供电设备还包括其他AC/DC单元和多个双向DC/DC单元时，第一直流输出母线340可以为稳定输出的(也可以说第一AC/DC单元310为稳定输出的)，备电单元490可以和第一直流输出母线340相连，其他直流输出母线可以通过多个双向DC/DC单元分别与第一直流输出母线相连，在出现交流输入母线故障时，可以使能所有双向DC/DC单元，从而备电单元经由各双向DC/DC单元为各直流输出母线供电。
根据本申请实施例的方案，各直流输出母线能够共用一套备电单元，通过控制双向DC/DC单元可以实现统一备电，统一管理，节约占地面积。
应理解，本申请实施例的方案中，第一控制器、第二控制器、第三控制器、第四控制 器和第五控制器可以为同一控制器，也可以为不同的控制器。作为示例而非限定，该AC/DC单元、双向DC/DC单元和控制器均可以插到插框中，通过插框的背板传输信号。该AC/DC单元、双向DC/DC单元可以通过背板向控制器传输电压电流信号、告警信息等，控制器可以通过背板向AC/DC单元、双向DC/DC单元传达调压、开关等命令。
以下，为了便于理解和说明，以多个直流输出母线共用一套备电单元的供电设备为例，对本申请实施例的供电设备以及控制方法进行详细说明，图5示出了本申请的另一个实施例的一种供电设备500的示意图。
供电设备500包括多个AC/DC单元，交流输入母线110经防雷盒SPD 120后分成多路到各AC/DC单元。第一AC/DC单元为图中M个稳定输出的AC/DC变换器510并联，M≥2，M为正整数。该第一AC/DC单元的输出端连接至直流输出母线A(即，第一直流输出母线的一例)。第二AC/DC单元为输出可调的AC/DC变换器520，其输出端连接至直流输出母线B1(即，第二直流输出母线的一例)。该供电设备还包括其他AC/DC单元，如图5中的输出可调的AC/DC变换器530，其输出端连接至直流输出母线BN；各条直流输出母线分别连接至对应的配电单元PDU或负载，备电单元590与直流输出母线A相连，直流输出母线A与其他直流输出母线之间分别通过一个双向DC/DC单元连接。例如，直流输出母线A与直流输出母线B1之间通过双向DC/DC单元570连接；直流输出母线A与直流输出母线BN之间通过双向DC/DC单元580连接。监控单元SMU 540(即，控制器的一例)负责管理系统内各模块工作，例如，输出可调的AC/DC变换器和双向DC/DC单元均可以通过监控单元SMU 540控制，也就是说监控单元SMU 540可以同时用作第一控制器、第二控制器、第三控制器、第四控制器和第五控制器。
其中，直流输出母线A的电压可以为2/3/4G电源系统的-48V母线电压，为传统通信电源供电，例如可以接基带单元(baseband unit，BBU)、2\3\4G等传统通信设备，该备电单元可以为备电电池；其他直流输出母线可以分别为独立的基站设备供电。
监控单元SMU 540管理供电设备内各模块工作，具体可以包括：
(1)控制输出可调的AC/DC变换器的输出电压，以优化对应的直流输出母线上端到端效率。
(2)控制各双向DC/DC单元，实现各直流输出母线之间的功率补偿、故障补位和备电等功能。
各直流输出母线之间的功率补偿具体为，直流输出母线A的输出功率不足时，直流输出母线B1-BN多出的功率可以通过双向DC/DC单元提供给直流输出母线A；直流输出母线B1-BN中任一直流输出母线功率不足时，可以由直流输出母线A通过双向DC/DC单元补偿功率给该功率不足的直流输出母线。
各直流输出母线之间的故障补位具体包括：除直流输出母线A上的AC/DC变换器510外，其他任一AC/DC变换器故障时，可以隔离故障，使能与故障的AC/DC变换器相连的双向DC/DC单元，改由直流输出母线A经双向DC/DC单元给发生故障AC/DC变换器所连接的直流输出母线上的负载提供功率；当直流输出母线A上的M个AC/DC变换器510都故障了，可以使能任一双向DC/DC单元，由其他直流输出母线通过双向DC/DC单元给直流输出母线A上的负载提供功率。
(3)控制各双向DC/DC单元和AC/DC变换器，实现统一备电。
统一备电即为各直流输出母线共用一套备电单元。备电单元590连在直流输出母线A上直接给直流输出母线A备电，经过各双向DC/DC单元给其他直流输出母线备电。
进一步说，DC/DC单元故障时，控制旁路该双向DC/DC单元，并调节与该双向DC/DC单元相连的AC/DC变换器(非连接备电单元侧的AC/DC变换器)的输出电压，使其与直流输出母线A的直流电压保持一致，以保证该直流输出母线能够共用备电单元。
另外，交流输入母线故障时，使能双向DC/DC单元，以使备电单元为各直流输出母线供电。
本申请实施例中的供电设备可以取代单母线供电设备，即可以利用电压直流输出母线A为传统通信设备供电，其他直流输出母线为其他扩展的基站设备供电。当然，也可以保留单母线供电设备，用于为直流输出母线A供电，在此基础上增设多个AC/DC单元和双向DC/DC单元，例如增设上述第二AC/DC单元、第三AC/DC单元等，分别输出至不同的直流输出母线，针对不同的负载分别供电。此外，本申请实施例中的供电设备也可以与单母线供电设备叠加。例如，电压直流输出母线A可以作为扩展端口，在单母线供电设备叠加本申请实施例的供电设备实现功率叠加，并共用备电单元。该备电单元可以为单母线供电设备原有的备电单元，也就是说，单母线供电设备叠加本申请实施例的供电设备实现功率叠加时，不额外引入其他备电单元。图6示出了本申请的一个实施例的供电设备与单母线供电设备叠加的示意图。单母线供电设备600的直流输出母线A与备电单元690相连，该备电单元690可以为单母线供电设备600原有的备电单元690，在此基础上，将上述本申请实施例的供电设备(即图中的多母线供电设备700和多母线供电设备800)的直流输出母线A与单母线供电设备600的直流输出母线A并联，也就是说，单母线供电设备600的输入端和本申请实施例的多母线供电设备700和多母线供电设备800的输入端连接至同一交流输入母线110，本申请实施例的多母线供电设备700的直流输出母线A和多母线供电设备800的直流输出母线A与单母线供电设备600的直流输出母线A作为同一直流输出母线输出，由此实现供电设备的快速叠加，得到直流输出母线A、直流输出母线B1至直流输出母线BN以及直流输出母线C1至直流输出母线CL等。当然，上述方式也可以实现多个本申请实施例的供电设备之间的叠加。
根据本申请实施例的方案，支持与单母线供电设备或多个本申请实施例的供电设备的快速叠加、扩容，能够支持所有供电设备统一备电、统一管理，可以应用于5G新建或叠加场景，利用单母线供电设备的备电电池，同时可以实现免直流配电改造的快速叠加、扩容，对后续演进扩容5G或2/3/4G场景都适用。本申请实施例的方案既可以满足5G供电需要的调压节能，又可以保留2/3/4G供电设备，系统间功率可以互相调度，统一管理、统一备电，实现了节能降耗、快速简单部署。
若供电设备包括第一AC/DC单元和第二AC/DC单元，供电设备的控制方法包括：确定AC/DC单元故障，可以隔离故障的AC/DC单元，使能双向DC/DC单元，以通过未发生故障的AC/DC单元所连接的直流输出母线向发生故障的AC/DC单元所连接的直流输出母线供电。
若供电设备包括多个AC/DC单元，供电设备的控制方法包括：确定任一AC/DC单元故障(若为该AC/DC单元为多个AC/DC变换器并联时，则该AC/DC单元的所有AC/DC变换器均故障时)，可以隔离故障的AC/DC单元；使能与故障的AC/DC单元相连的双向 DC/DC单元，使与该双向DC/DC单元相连的其他直流输出母线经双向DC/DC单元为该故障的AC/DC单元对应的直流输出母线上的负载提供功率。
图7示出本申请一个实施例的供电设备的控制方法900示意图。结合图4，以供电设备400包括第一AC/DC单元310和第二AC/DC单元320为例说明供电设备的控制方法900，控制方法900包括：
步骤910，确定第一AC/DC单元310故障，隔离第一AC/DC单元310；
步骤920，使能双向DC/DC单元470，以通过第二直流输出母线350向第一直流输出母线340供电。应理解，上述控制方法900也可以包括：步骤910，确定第二AC/DC单元320故障，隔离第二AC/DC单元320；使能双向DC/DC单元470，以通过第一直流输出母线340向第二直流输出母线350供电。
再以供电设备400还包括第三AC/DC单元330为例进行说明。如图4所示，确定第三AC/DC单元330故障，隔离第三AC/DC单元330；使能双向DC/DC单元480，以通过第一直流输出母线330向第三直流输出母线360供电。再例如，确定第一AC/DC单元310故障，隔离第一AC/DC单元310；使能双向DC/DC单元470或使能双向DC/DC单元480，以通过第二直流输出母线350或第三直流输出母线360向第一直流输出母线330供电。
根据本申请实施例提供的方案，通过多个AC/DC单元输出至多条直流输出母线，多条直流输出母线能够独立输出，分别为不同类型负载供电，这种多母线供电方案可以针对不同类型负载配置相应的直流输出母线电压。
同时，对于远距离的负载而言，提升电压能够降低线损。而不同的负载的升压需求不同，这种多母线方案能够满足不同负载的升压需求，降低线损，实现端对端效率优化，提升拉远能力。
此外，通过控制双向DC/DC单元，能够实现各直流输出母线间的故障补位，进一步保证稳定供电。
供电设备的控制方法900还可以包括：确定所述第一直流输出母线或第二直流输出母线供电能力小于负载需求；使能所述双向DC/DC单元，以控制所述第一直流输出母线和所述第二直流输出母线之间的功率补偿。
若供电设备包括多个AC/DC单元，供电设备的控制方法900包括：确定任一直流输出母线功率不足，也就是说该直流输出母线上的供电能力小于负载需求，此时该直流输出母线上的直流电压会下跌；使能该直流输出母线所连接的双向DC/DC单元，由被使能的双向DC/DC单元所连接的其他直流输出母线通过双向DC/DC单元补偿功率给功率不足的直流输出母线。
结合图4，以该供电设备包括第一AC/DC单元310和第二AC/DC单元320为例进行说明。确定某一直流输出母线供电能力小于负载需求时，使能该双向DC/DC单元470，以控制第一直流输出母线340和第二直流输出母线350之间的功率补偿。作为示例而非限定，确定第二直流输出母线350供电能力小于负载需求时，例如监测到第二AC/DC单元320的输出电压下跌，使能双向DC/DC单元470，以控制该第一直流输出母线340向第二直流输出母线350输送能量，进行功率补偿。
再以供电设备400还包括第三AC/DC单元330为例进行说明。如图4所示，确定第一直流输出母线340供电能力小于负载需求时，例如监测到第一AC/DC单元310的输出 电压下跌，使能双向DC/DC单元470或使能双向DC/DC单元480，以控制该第二直流输出母线350或第三直流输出母线360向第一直流输出母线330输送能量，进行功率补偿。
根据本申请实施例提供的方案，通过控制双向DC/DC单元，能够实现各直流输出母线间的能量调度，解决在现有站点上设备功率配置利用率不足的问题，实现小概率峰值场景的功率互补，实现单路配置低功率，降低设计成本，且功率调度可以提升单点故障容错率，提升供电可靠性。
供电设备包括第一AC/DC单元和第二AC/DC单元，备电单元和第一直流输出母线相连时，供电设备的控制方法900还可以包括：确定双向DC/DC单元故障；旁路发生故障的双向DC/DC单元；调节第二AC/DC单元，以使第二直流输出母线的直流电压与第一直流输出母线的直流电压相同。
结合图4对供电设备的控制方法900进行说明，确定双向DC/DC单元470故障，旁路双向DC/DC单元470，控制第二AC/DC单元320，以使第二直流输出母线350的直流电压与第一直流输出母线340的电压相等。
作为示例而非限定，当该供电设备还包括其他AC/DC单元和多个双向DC/DC单元时，备电单元和第一直流输出母线相连，其他直流输出母线可以通过多个双向DC/DC单元分别与第一直流输出母线相连。供电设备的控制方法900包括：确定双向DC/DC单元故障，旁路该双向DC/DC单元，并调节AC/DC单元使得与该双向DC/DC单元相连的直流输出母线的电压和第一直流输出母线的电压相同，并保持恒定，从而使得发生故障的双向DC/DC单元对应的直流输出母线仍能共用备电单元，提高了供电的稳定性。
再以供电设备400还包括第三AC/DC单元330为例进行说明。如图4所示，该备电单元490可以和第一直流输出母线340相连。本申请实施例的供电设备900的控制方法包括：确定双向DC/DC单元480故障，旁路双向DC/DC单元480，控制第三AC/DC单元330，以使第三直流输出母线360的直流电压与第一直流输出母线340的电压相等。
供电设备的控制方法900还可以包括：确定交流输入母线故障，使能双向DC/DC单元，以使所述备电单元为各直流输出母线供电。
根据本申请实施例的方案，各直流输出母线能够共用一套备电单元，通过控制双向DC/DC单元可以实现统一备电，统一管理，节约占地面积。
本申请实施例提供的供电设备既支持2/3/4G系统供电，也支持新型5G系统供电，且5G供电的多母线独立输出可调，能够灵活配置，对5G大功耗场景，可以通过调节母线电压，有效降低线损，提高拉远能力，优化端到端效率。各直流输出母线之间的功率调度，可以补偿单母线在小概率峰值功率场景的功率需求，以降低单路功率刚需配置，降低设计成本。统一备电，统一网管减少了叠加或新建站时系统部件和占地面积，支持快速叠加、扩容，叠加场景免直流界面改造，可实现5G站点电源的快速部署。
上述实施例，可以全部或部分地通过软件、硬件、固件或其他任意组合来实现。当使用软件实现时，上述实施例可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令或计算机程序。在计算机上加载或执行所述计算机指令或计算机程序时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以为通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存 储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集合的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如，软盘、硬盘、磁带)、光介质(例如，DVD)、或者半导体介质。半导体介质可以是固态硬盘。
应理解，本文中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。此外，本文中术语“……中的至少一个”或“……中至少一种”或类似表述，表示所列出的各项的任意组合，例如，A、B和C中的至少一个(或者A、B或C中的至少一个)，可以表示：单独存在A，单独存在B，单独存在C，同时存在A和B，同时存在A和C，同时存在B和C，同时存在A、B和C这七种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
应理解，在本申请的各种实施例中，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器、随机存取存储器、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (13)

  1. 一种供电设备，其特征在于，包括：
    第一交流/直流AC/DC单元，所述第一AC/DC单元的输入端连接至交流输入母线，所述第一AC/DC单元的输出端连接至第一直流输出母线；
    第二AC/DC单元，所述第二AC/DC单元的输入端连接至所述交流输入母线，所述第二AC/DC单元的输出端连接至第二直流输出母线。
  2. 根据权利要求1所述的供电设备，其特征在于，所述第一直流输出母线与所述第二直流输出母线的电压不同。
  3. 根据权利要求1或2所述的供电设备，其特征在于，所述第二AC/DC单元是输出可调的，以及
    所述供电设备还包括第一控制器，所述第一控制器用于确定所述第二直流输出母线上的直流电压，并根据所述直流电压调节所述第二AC/DC单元。
  4. 根据权利要求1至3任一项所述的供电设备，其特征在于，所述供电设备还包括：
    双向直流/直流DC/DC单元，所述双向DC/DC单元连接于所述第一直流输出母线和所述第二直流输出母线之间。
  5. 根据权利要求4所述的供电设备，其特征在于，所述供电设备还包括：
    第二控制器，所述第二控制器用于在确定所述第一AC/DC单元故障时，使能所述双向DC/DC单元，以通过所述第二直流输出母线向所述第一直流输出母线供电。
  6. 根据权利要求4或5所述的供电设备，其特征在于，所述供电设备还包括：
    第三控制器，所述第三控制器用于在确定所述第一直流输出母线供电能力小于负载需求时，使能所述双向DC/DC单元，以控制所述第一直流输出母线和所述第二直流输出母线之间的功率补偿。
  7. 根据权利要求4至6任一项所述的供电设备，其特征在于，所述第一AC/DC单元为稳定输出的AC/DC单元，以及
    所述供电设备还包括：备电单元，所述备电单元的直流输出端与所述第一直流输出母线相连。
  8. 根据权利要求7所述的供电设备，其特征在于，所述供电设备还包括：
    第四控制器，所述第四控制器用于在确定所述双向DC/DC单元故障时，旁路所述双向DC/DC单元，调节所述第二AC/DC单元，以使第二直流输出母线的直流电压与第一直流输出母线的直流电压相同。
  9. 根据权利要求7或8所述的供电设备，其特征在于，所述供电设备还包括：
    第五控制器，所述第五控制器用于在确定所述交流输入母线故障时，使能所述双向DC/DC单元，以使所述备电单元为所述第二直流输出母线供电。
  10. 一种供电设备的控制方法，其特征在于，所述供电设备包括第一AC/DC单元、第二AC/DC单元、双向直流/直流DC/DC单元和备电单元，所述第一AC/DC单元的输入端连接至交流输入母线，所述第一AC/DC单元的输出端连接至第一直流输出母线，所述第一AC/DC单元为稳定输出的AC/DC单元，所述第二AC/DC单元的输入端连接至所述 交流输入母线，所述第二AC/DC单元的输出端连接至第二直流输出母线，所述第二AC/DC单元是输出可调的，所述双向DC/DC单元连接于第一直流输出母线和第二直流输出母线之间，所述备电单元的直流输出端与第一直流输出母线相连，
    所述方法包括：
    确定所述第一AC/DC单元故障；
    使能所述双向DC/DC单元，以通过所述第二直流输出母线向所述第一直流输出母线供电。
  11. 根据权利要求10所述的控制方法，其特征在于，所述方法还包括：
    确定所述第一直流输出母线供电能力小于负载需求；
    使能所述双向DC/DC单元，以控制所述第一直流输出母线和所述第二直流输出母线之间进行功率补偿。
  12. 根据权利要求10或11所述的控制方法，其特征在于，所述方法还包括：
    确定所述双向DC/DC单元故障；
    旁路所述双向DC/DC单元，调节所述第二AC/DC单元，以使第二直流输出母线的直流电压与第一直流输出母线的直流电压相同。
  13. 根据权利要求10至12任一项所述的控制方法，其特征在于，所述方法还包括：
    确定所述交流输入母线故障；
    使能所述双向DC/DC单元，以使所述备电单元为所述第二直流输出母线供电。
PCT/CN2020/089209 2019-07-30 2020-05-08 一种供电设备及控制方法 Ceased WO2021017563A1 (zh)

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