CN217720812U - Power supply device for 5G base station uninterruptible power supply - Google Patents
Power supply device for 5G base station uninterruptible power supply Download PDFInfo
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- CN217720812U CN217720812U CN202221069795.8U CN202221069795U CN217720812U CN 217720812 U CN217720812 U CN 217720812U CN 202221069795 U CN202221069795 U CN 202221069795U CN 217720812 U CN217720812 U CN 217720812U
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Abstract
The utility model provides a power supply unit of 5G basic station uninterrupted power source power supply, belongs to power supply unit technical field, and AC power supply system's commercial power input power is connected to AC distribution box through one-level surge protector. A hydrogen fuel cell power generation system of an AC power supply system is connected to an AC distribution box through an inverter. The two-stage surge protector of AC distribution box double power supply switching connection DC power supply system, the two-stage surge protector is connected to DC power supply system's AC distribution unit, AC distribution unit is connected to the rectifier unit, behind the direct current of each rectifier module unit output of rectifier unit, converge to DC power supply system's direct current busbar, direct current busbar is connected to DC power supply system's direct current distribution unit all the way, be connected to super capacitor energy storage system all the way, direct current distribution unit connects the direct current communication load. The hydrogen fuel cell and the mains supply are supplied alternately, so that a green energy-saving environment-friendly uninterruptible power supply system power supply framework is constructed, and an emergency power supply guarantee is provided for a 5G base station communication load.
Description
Technical Field
The utility model belongs to the technical field of power supply unit, in particular to power supply unit of 5G basic station uninterrupted power source power supply, 5G basic station are the core equipment of 5G network, provide wireless coverage, realize the radio signal transmission between wired communication network and the wireless terminal. At present, more than 115 thousands of 5G base stations are established in China, account for more than 70% of the world, and are the largest 5G independent networking network with the most advanced technology in the world. In the 5G era, the trend of miniaturization, integration, low carbon and environmental protection of base stations puts higher demands on the performance of communication standby power supplies.
Background
The existing power supply system structure of the base station is as follows: the system consists of an alternating current power supply system and a direct current power supply system.
The alternating current power supply system comprises a mains supply, a mobile oil engine power supply, a surge protector and an alternating current distribution box (with a mains oil engine conversion function).
The direct-current power supply system consists of a high-frequency switch combined power supply (comprising an alternating-current power distribution unit, a monitoring module, a rectifying module and a direct-current power distribution unit) and two groups (or one group) of storage battery packs.
The uninterrupted power supply system of the traditional base station mainly adopts a diesel generator set as a long-time standby power supply and adopts electrochemical batteries such as lead-acid storage batteries or lithium ion batteries as a short-time standby power supply. When the mains supply input power supply is normal, the mains supply supplies power to the load in the base station, after the mains supply is interrupted, the electrochemical battery such as a lead-acid storage battery or a lithium ion battery supplies power to the communication load of the base station, the diesel generator set is started at the same time, after the diesel generator set is started successfully and the output voltage is stable and has the load carrying capacity, the diesel generator set is switched to supply power to the diesel generator set through the dual-power switch, after the mains supply input power supply is recovered, the dual-power switch is switched to the mains supply side for supplying power, and the mains supply continues to supply power to the load in the base station.
The technical advantages are as follows:
1. the diesel generating set has high fuel economy and thermal efficiency. Stable performance and wide application range.
2. Electrochemical batteries such as lead-acid storage batteries or lithium ion batteries have good durability, the discharge rate can be guaranteed, and the market share is high.
The technical scheme is as follows:
1 the traditional diesel generator set has the defects of long starting time, large volume, heavy weight, high noise, high maintenance cost, environmental pollution and the like.
The lead-acid storage battery has the defects of short service life, potential safety hazards such as fire, explosion and the like, environmental pollution caused by containing a large amount of heavy metal lead, requirement of a precise air conditioner for temperature control during operation, rapid energy attenuation and the like.
The 3 lithium ion battery has high energy density and long service life, but has active chemical characteristics, is easy to cause safety accidents such as fire and explosion, is not easy to extinguish fire after firing, and is not suitable for being used as a standby power supply in a base station on a large scale.
Therefore, an uninterruptible power supply system composed of a traditional diesel generator set and an electrochemical battery has the problems of low power supply reliability, poor economical efficiency, energy conservation, environmental protection and the like.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a power supply unit of 5G basic station uninterrupted power source power supply adopts hydrogen fuel cell and commercial power supply in turn, provides emergency power supply guarantee for 5G basic station communication load.
A power supply device for supplying power to an uninterrupted power supply of a 5G base station comprises an alternating current power supply system, a direct current power supply system, an energy storage system, a centralized monitoring system and a direct current communication load.
The method is characterized in that:
a commercial power input power supply of the alternating current power supply system is connected to an alternating current distribution box through a primary surge protector.
A hydrogen fuel cell power generation system of an AC power supply system is connected to an AC distribution box via an inverter.
The double power supplies of the alternating current distribution box are switched to be connected to a second-stage surge protector of the direct current power supply system, the second-stage surge protector is connected to an alternating current distribution unit of the direct current power supply system, the alternating current distribution unit is connected to the rectifying unit, after direct currents output by all rectifying module units of the rectifying unit converge to a direct current bus of the direct current power supply system, the direct current bus is connected to the direct current distribution unit of the direct current power supply system all the way, the direct current bus is connected to the energy storage system all the way, and the direct current distribution unit is connected to a direct current communication load.
The centralized monitoring system is connected with a transmission commercial power input power supply, a hydrogen fuel cell power generation system, a dual-power switch in an alternating-current distribution box, a rectifying unit, a direct-current bus bar, an energy storage system and a direct-current communication load.
The advantages are that:
the hydrogen fuel cell and the mains supply are adopted for alternate power supply, the hydrogen fuel cell power generation system is adopted to replace a traditional diesel generator set, the super capacitor is adopted to replace traditional lead-acid storage batteries or lithium ion batteries and other electrochemical batteries, a novel green energy-saving environment-friendly uninterruptible power supply system power supply framework is constructed, and emergency power supply guarantee is provided for a 5G base station communication load.
The invention constructs a novel uninterrupted power system power supply framework based on a super-capacitor energy storage technology and a hydrogen fuel cell power generation technology, and is applied to the 5G base station uninterrupted power supply guarantee. The hydrogen fuel cell power generation system is high in reliability and free of corrosion to equipment, the discharged end product is water, harmful substances such as greenhouse gases and the like such as carbon dioxide are not discharged, the design life of the hydrogen fuel cell power generation system exceeds 10 years and is 3-4 times of the service life of the traditional electrochemical cell, the operation and maintenance cost is low, an air conditioner is not needed, the energy consumption of the air conditioner of a base station can be reduced, the hydrogen fuel cell power generation system is energy-saving and environment-friendly, hot plug fuel increase and decrease are supported, and the continuous power supply time can be guaranteed for 8 hours, 24 hours, 72 hours and the like according to configuration requirements. The super capacitor has high power density which is 2-30 times of that of an electrochemical battery, short charging and discharging time, long cycle life, long working temperature range and deep charging and discharging cycle use which can be used for dozens of thousands of times. The charging and discharging circuit is simple, has failure and open circuit, is not punctured by overvoltage, is safe and reliable, and the like, and is used for continuous power supply when a commercial power input power supply and a hydrogen fuel cell power generation system are switched. The novel power supply structure of the 5G base station based on the super-capacitor energy storage technology and the hydrogen fuel cell power generation technology has the advantages of high safety, high reliability, zero emission, zero pollution, long service life, good energy-saving effect and the like, accords with the development concept of green environmental protection, and is favorable for realizing 'carbon peak reaching and carbon neutralization'.
Drawings
Fig. 1 is a schematic diagram of the power supply architecture of the present invention.
Fig. 2 is a circuit diagram of a centralized monitoring system.
Fig. 3 is a first schematic diagram of the ups system.
Fig. 4 is a schematic diagram of the operating principle of the ups system.
Fig. 5 is a third schematic diagram of the operating principle of the ups system.
The system comprises an alternating current power supply system 10, a direct current power supply system 20, an energy storage system 30, a centralized monitoring system 40, a direct current communication load 50, an alternating current load 60 and a remote control module 70.
The system comprises a commercial power input power supply 101, a primary surge protector 102, a fuel cell power generation system 103, an inverter 104 and an alternating current distribution box 105.
The system comprises a two-stage surge protector 201, an alternating current power distribution unit 202, a rectifying unit 203, a direct current bus bar 204 and a direct current power distribution unit 205.
The core monitor and control module 401.
An air conditioner 601 and a lighting load 602.
Detailed Description
The novel power supply architecture mainly comprises an alternating current power supply system 10, a direct current power supply system 20, an energy storage system 30, a centralized monitoring system 40 and a direct current communication load 50.
The ac power supply system 10 mainly includes a commercial power input power source 101, a primary surge protector 102, a fuel cell power generation system 103, an inverter 104, and an ac distribution box 105.
The commercial power input power supply 101 is used for providing a power supply for the 5G base station, and the commercial power input power supply is required to be at least more than three types (namely annual power failure times are less than or equal to 8 times, and each power failure time is less than or equal to 54 hours). The primary surge protector 102 protects the rear-end power supply equipment by suppressing transient overvoltage and bypass surge current, and as the primary lightning protection of the base station power supply system, sets the maximum through flow as Imax, the maximum through flow Imax can be determined according to the base station property, the geographic environment and the local thunderstorm day, and the lightning overvoltage protection of the ac power supply system 10 of the communication base station should use the hierarchical protection.
The fuel cell power generation system 103 is used for providing long-time power supply for a base station communication load after the commercial power input power supply 101 is interrupted, a hydrogen supply system and an oxygen supply system of the hydrogen cell power generation system 103 convert chemical energy into electric energy through a galvanic pile system and output the electric energy, the power supply time depends on the capacity of hydrogen storage and can be configured as required, and the hydrogen cell power generation system 103 mainly comprises a hydrogen storage unit, a hydrogen supply system, an oxygen supply system, a galvanic pile system, a control system and a cooling and heat dissipation system. The inverter 104 is used for inverting the stable direct current output by the hydrogen fuel cell power generation system 103 into power frequency 50Hz alternating current to supply power for the key communication load. The ac distribution box 105 has a function of switching between the commercial power input power source 101 and the hydrogen fuel cell power generation system 103.
The dc power supply system 20 mainly includes a secondary surge protector 201, an ac power distribution unit 202, a rectifier unit 203, a dc bus 204, and a dc power distribution unit 205.
The secondary surge protector 201 protects the back-end power supply device by suppressing transient overvoltage and bypass surge current, and serves as secondary lightning protection of the base station power supply system. The ac power distribution unit 202 is used to distribute ac power output from the commercial power input power source 101 or the hydrogen fuel cell power generation system 103. The basic circuit configuration of the rectifying unit 203 includes an ac filter, a PFC circuit, a DC/DC conversion circuit, a DC filter, a control circuit, a protection circuit, and the like, and includes a plurality of parallel rectifying unit 203 modules each of which receives ac power from the ac power distribution unit 202 and rectifies the ac power into DC power. The dc bus 204 is used for collecting dc power output by each of the modules of the rectifying units 203 and supporting charging of the energy storage system 30. The dc distribution unit 205 supplies the dc power output from the rectifying unit 203 via the dc bus 204 to the dc communication load 50.
The energy storage system 30 includes a super capacitor energy storage unit, and is used for continuous power supply when the power supply circuits of the commercial power input power 101 and the hydrogen fuel cell power generation system 103 are switched.
The centralized monitoring system 40 is used for monitoring and controlling each unit of the uninterruptible power supply system in real time, and is configured with standard RS232, RS485, ethernet or optical fiber communication interfaces as interfaces for background monitoring as required.
The dc communication load 50 is a critical load of the base station, and the interruption of power supply will result in no communication, so the ups system needs to be configured to ensure the continuity of power supply.
The alternating current load 60 mainly comprises an air conditioner 601 and a lighting load 602, and is a non-key load, power can be cut off in a short time, normal operation of a base station communication load is not affected after power supply interruption, at ordinary times, mains supply is input into the power supply 101 for supplying power, and after the fuel cell power generation system 103 is switched to be started and loaded in a power failure mode, the alternating current load 60 recovers power supply.
The utility power input power 101 is connected to an AC distribution box 105 through a primary surge protector 102, the hydrogen fuel cell power generation system 103 is connected to the AC distribution box 105 through an inverter 104, double power supplies are switched and connected to a secondary surge protector 201 in the AC distribution box 105, the secondary surge protector 201 is connected to an AC distribution unit 202, the AC distribution unit 202 is connected to a rectification unit 203, after the DC output by each rectification module unit of the rectification unit 203, the DC is converged to a DC bus 204, the DC bus 204 is connected to a DC distribution unit 205 all the way, the DC distribution unit 205 is connected to an energy storage system 30 all the way, the DC distribution unit 205 is connected to a DC communication load 50, and the DC communication load is powered.
The ac distribution box 105 is also connected to an ac load 60.
Wherein, monitoring and control of the uninterruptible power supply system are completed by a centralized monitoring system 40, and the monitoring principle is as shown in fig. 2:
the core monitoring control module 401 collects the running state information of the transmission commercial power input power 101, the hydrogen fuel cell power generation system 103, the ATS dual-power switch in the alternating current distribution box 105, the rectification unit 203, the direct current bus 204, the energy storage system 30, the direct current communication load 50 and the like in real time through an RS232 or RS485 communication interface and a modbus communication protocol or a communication interface and a communication protocol supported by other systems.
The core monitoring control module 401 is connected with the signal output module, displays the running state and parameters through an LED screen, can trigger protection action to stop if fault information such as alarm and warning occurs in each power supply link, restarts after fault recovery, supports a remote control (remote control module 70)/local mode by the core monitoring control module 401, facilitates signal uploading, remote control, parameter setting and the like, and automatically controls the uninterruptible power supply system to supply power for the direct current communication load 50 after a mains supply power failure event occurs.
The power supply principle of the novel power supply framework uninterrupted power supply is shown in figures 3-5:
when the utility power input power 101 supplies power normally, the ATS dual power switch in the ac power distribution unit 202 is switched to the utility power supply side, and after the utility power input power 101 is rectified by the rectifying unit 203, stable direct current is output to supply power to the dc communication load 50 through the dc bus 204, and the energy storage system 30 is charged through the dc bus 204, thereby supplementing the electric quantity lost by the energy storage system 30 due to self-discharge. As shown in fig. 3.
When the power supply of the commercial power input power 101 is interrupted, the centralized monitoring system 40 judges that the power supply of the power grid is interrupted after monitoring that the alternating voltage of the commercial power input power 101 is interrupted, controls the energy storage system 30 to discharge and supply power to the direct current communication load 50 through the direct current bus 204, and controls the ATS dual power switch in the alternating current power distribution unit 202 to send a starting control instruction to the hydrogen fuel cell power generation system 103. As shown in fig. 4.
After receiving the start control instruction of the centralized monitoring system 40, the hydrogen fuel cell power generation system 103 performs state self-checking, starts after self-checking is correct, when the voltage of the output side of the hydrogen fuel cell power generation system 103 reaches a rated value, outputs alternating current through the inverter 104 and is connected to the grid, the centralized monitoring system 40 controls the ATS dual-power switch in the alternating current power distribution unit 202 to be switched to the hydrogen fuel cell power generation system 103 side for power supply, the hydrogen fuel cell power generation system supplies power to the direct current communication load 50 through the rectification unit 203 and the direct current bus 204 for continuous power supply, meanwhile, the energy storage system 30 is charged through the current bus 204, and the electric quantity lost by the energy storage system 30 due to power interruption of the commercial power input power 101 is supplemented. As shown in fig. 5.
When the power supply of the commercial power input power 101 is recovered, the centralized monitoring system 40 controls the ATS dual power switch in the alternating current distribution unit 202 to switch to the commercial power supply side again after monitoring that the alternating current voltage of the commercial power input power 101 is recovered, outputs stable direct current to supply power to the direct current communication load 50 through the direct current bus bar 204 after the commercial power input power 101 is rectified by the rectifying unit 203, and continues to charge the energy storage system 30 through the direct current bus bar 204 and sends a shutdown control instruction to the hydrogen fuel cell power generation system 103.
Claims (3)
1. A power supply device for supplying power to an uninterruptible power supply of a 5G base station comprises an alternating current power supply system (10), a direct current power supply system (20), an energy storage system (30), a centralized monitoring system (40) and a direct current communication load (50), and is characterized in that:
a commercial power input power supply (101) of the alternating current power supply system (10) is connected to an alternating current distribution box (105) through a primary surge protector (102);
a hydrogen fuel cell power generation system (103) of the AC power supply system (10) is connected to an AC distribution box (105) through an inverter (104);
the double power supplies of the alternating current distribution box (105) are switched and connected to a secondary surge protector (201) of a direct current power supply system (20), the secondary surge protector (201) is connected to an alternating current power distribution unit (202) of the direct current power supply system (20), the alternating current power distribution unit (202) is connected to a rectifying unit (203), after direct currents output by rectifying module units of the rectifying unit (203) converge to a direct current bus bar (204) of the direct current power supply system (20), one path of the direct current bus bar (204) is connected to a direct current power distribution unit (205) of the direct current power supply system (20), the other path of the direct current bus bar is connected to an energy storage system (30), and the direct current power distribution unit (205) is connected to a direct current communication load (50);
the centralized monitoring system (40) is connected with a transmission mains supply input power supply (101), a hydrogen fuel cell power generation system (103), a dual-power switch in an alternating current distribution box (105), a rectifying unit (203), a direct current bus bar (204), an energy storage system (30) and a direct current communication load (50).
2. The power supply device of claim 1, wherein the power supply device comprises:
the AC distribution box (105) is also connected to an AC load (60), and the AC load (60) includes an air conditioner (601) and a lighting load (602).
3. The power supply device of claim 1, wherein the power supply device comprises:
the energy storage system (30) is a super capacitor energy storage system.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221069795.8U CN217720812U (en) | 2022-05-07 | 2022-05-07 | Power supply device for 5G base station uninterruptible power supply |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221069795.8U CN217720812U (en) | 2022-05-07 | 2022-05-07 | Power supply device for 5G base station uninterruptible power supply |
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