CN104753162A - Base station power supply system and multipath alternating current power supply switching method thereof - Google Patents
Base station power supply system and multipath alternating current power supply switching method thereof Download PDFInfo
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- CN104753162A CN104753162A CN201310743780.4A CN201310743780A CN104753162A CN 104753162 A CN104753162 A CN 104753162A CN 201310743780 A CN201310743780 A CN 201310743780A CN 104753162 A CN104753162 A CN 104753162A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/007—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources
- H02J3/0073—Arrangements 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 and source when the main path fails, e.g. transformers, busbars
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/08—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 requiring starting of a prime-mover
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Rectifiers (AREA)
- Direct Current Feeding And Distribution (AREA)
Abstract
The invention discloses a base station power supply system and a multipath alternating current power supply switching method thereof and relates to the technical field of power supply. The problem that an existing system is high in fault rate and low in oil engine output reliability when adopting an ATS to perform multipath alternating current power supply switching is solved. In the base station power supply system, a rectifier module is provided with an alternating current input end and a first direct current output end, the alternating current input ends of all alternating current power supplies are connected in parallel, then are electrically connected with the alternating current input ends and are used for converting alternating current input from the alternating current input ends into direct current at first voltage and outputting the direct current through the first direct current output end; a direct current-direct current conversion module is provided with a first direct current input end and a second direct current output end, wherein the first direct current output end is electrically connected with the first direct current input end and used for converting direct current at the first voltage into direct current at second voltage and supplying power for a base station device from the first direct current output end; a control module is used for controlling opening or closing of at least one alternating current power supply.
Description
Technical field
The present invention relates to supply of electric power technology, particularly relate to base station electric power system and multichannel AC power-supply switching method thereof.
Background technology
Along with the continuous increase of cellphone subscriber, the coverage rate of base station is also in continuous expansion, frequent needs in suburb, highway, the remote areas such as mountain area and island set up base station, and these remote districts are normally without the area of civil power or civil power instability, therefore need to use diesel generating set (referred to as oil machine) as AC power for subsequent use in these areas.
Under normal circumstances, be that the electric power system that a base station from far-off regions powers comprises three tunnel AC power, as shown in Figure 6, one tunnel is civil power, one tunnel is that the interchange of the first oil machine exports, one tunnel is that the interchange of the second oil machine exports, and the second oil machine is the oil machine for subsequent use of the first oil machine, and when an oil machine fault, another oil machine can ensure the normal work of base station.Automatic switching control equipment (ATS is exchanged by two between this three tunnels AC power, Automatic transfer switching equipment) in parallel, control module controls the unlatching of oil machine or closedown and coordinates the action of control ATS to realize the switching of multichannel AC power supply, thus without unstable start by set date first oil machine of civil power or civil power as AC power for subsequent use, or when the first oil machine can not normally start, start the second oil machine as AC power for subsequent use, or when city's electric energy meets base station power demands, close oil machine.Wherein, an ATS exports as interchange for selecting the output of the first oil machine or the second oil machine, and the 2nd ATS exports as interchange for selecting the output of civil power or oil machine.Exchange to export and be converted into direct current again, use for base station.
Switch in the process of AC power using this ATS, inventor finds: ATS adopts two contactor (sky is opened) or hilted broadsword pair to press switch, belong to mechanical action switch, when combined floodgate and separating brake, have mechanical action and electric arc, failure rate is high, in addition, the output of oil machine will through two diverter switches, and reliability is lower.
Summary of the invention
Embodiments of the invention provide a kind of base station electric power system and multichannel AC power-supply switching method thereof, solve in existing system the failure rate existed when adopting ATS to switch multichannel AC power supply high, the problem that the reliability that oil machine exports is low.
For achieving the above object, embodiments of the invention adopt following technical scheme:
First aspect, embodiments of the invention provide a kind of base station electric power system, comprise multichannel AC power supply and control module, also comprise rectification module and DC-dc conversion module; Rectification module, there is ac input end and the first DC output end, be electrically connected with described ac input end after the ac output end parallel connection of AC power described in each road, described rectification module is used for converting the alternating current inputted from described ac input end the direct current with the first voltage to, exports from described first DC output end; DC-dc conversion module, there is the first direct-flow input end and the second DC output end, described first direct-flow input end of described first DC output end electrical connection, DC-dc conversion module is used for converting the direct current with described first voltage the direct current with the second voltage to, exports from described second DC output end to power to base station equipment; Control module, for controlling unlatching or the closedown of AC power described at least one road.
In conjunction with first aspect, in the first possible implementation of first aspect, described multichannel AC power supply comprises civil power and the first oil machine; Described control module, opens for controlling described first oil machine or closes.
In conjunction with the first possible implementation of first aspect, in the implementation that the second is possible, described base station electric power system also comprises power supply unit, there is the 3rd DC output end be electrically connected with base station equipment, and the second direct-flow input end to be electrically connected with described second DC output end, described power supply unit is used for the direct current with given voltage converted to by the described direct current with the second voltage needed for described base station equipment, exports from described 3rd DC output end; Described control module is also for controlling the current value that described 3rd DC output end exports.
In conjunction with the implementation that the second of first aspect is possible, in the implementation that the third is possible, described AC power also comprises the second oil machine; Described control module, for controlling unlatching or the closedown of described second oil machine.
In conjunction with the second or the third possible implementation of first aspect, in the 4th kind of possible implementation, described base station electric power system also comprises storage battery, there is the charging end be electrically connected with described 3rd DC output end, and the discharge end to be electrically connected with described base station equipment, described storage battery is used for converting the direct current with described given voltage by described charging end to electrical power storage, or the electric energy of storage is converted to the direct current with described given voltage and export described base station equipment to by discharge end; Described control module is for detecting the state of described storage battery.
In conjunction with first aspect, in the 5th kind of possible implementation of first aspect, described rectification module is bridge-type half-wave rectifying circuit or full-wave bridge rectifier circuit.
Second aspect, embodiments of the invention provide a kind of multichannel AC power-supply switching method, for switching the multichannel AC power supply in the electric power system of base station, described base station electric power system also comprises: rectification module, DC-dc conversion module, power supply unit and storage battery; Be electrically connected with described rectification module after the ac output end parallel connection of AC power described in each road, described rectification module is electrically connected with described DC-dc conversion module, described DC-dc conversion module is electrically connected with described power supply unit, and the DC output end of described power supply unit is connected with described storage battery; Described multichannel AC power supply comprises civil power and oil machine; Described method comprises: when mains failure and discharged or defective battery time, the electric current that the DC output end of described power supply unit is exported be decreased to gradually described power supply unit close; Open described oil machine, and start timer; When described timer time arrives, open described power supply unit.
In conjunction with second aspect, in the first possible implementation of second aspect, described multichannel AC power-supply switching method also comprises: when described oil machine scarce capacity, and the electric current that the DC output end of described power supply unit is exported reduces.
In conjunction with the first possible implementation of second aspect or second aspect, in the implementation that the second of second aspect is possible, described multichannel AC power-supply switching method also comprises: when city's power is sufficient and described oil machine is opened, the electric current that the DC output end of described power supply unit is exported is decreased to described power supply unit gradually and closes; Close described oil machine, and start described timer; When described timer time arrives, open described power supply unit.
In conjunction with the implementation that the second of second aspect is possible, in the implementation that the third is possible, described multichannel AC power-supply switching method also comprises: when described civil power scarce capacity, and the electric current that the DC output end of described power supply unit is exported reduces.
In the base station electric power system that the embodiment of the present invention provides and multichannel AC power-supply switching method thereof, be electrically connected with the ac input end of rectification module after the ac output end parallel connection of each road AC power, the alternating current that each road AC power exports can be converted to direct current by rectification module, then the direct current that rectification module exports directly supplies DC-dc conversion module by the direct-flow input end of DC-dc conversion module, be transformed into the direct current with given voltage, use for base station equipment, control module is only opened when needed or closes at least one road AC power, thus realize the switching of AC power, just can realize the different AC power of switching for base station equipment owing to not needing to use mechanical action switch in whole electric power system to power, therefore the failure rate existed when adopting ATS to switch multichannel AC power supply can be solved in existing electric power system high, the problem that the reliability that oil machine exports is low.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The block diagram of a kind of base station electric power system that Fig. 1 provides for the embodiment of the present invention;
The block diagram comprising the another kind of base station electric power system of base station equipment that Fig. 2 provides for the embodiment of the present invention;
The block diagram of the base station electric power system that Fig. 3 applies for the multichannel AC power-supply switching method that the embodiment of the present invention provides;
The flow chart of a kind of multichannel AC power-supply switching method that Fig. 4 provides for the embodiment of the present invention;
The flow chart of the another kind of multichannel AC power-supply switching method that Fig. 5 provides for the embodiment of the present invention;
Fig. 6 is the block diagram of existing base station electric power system.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite of not making creative work, all belongs to the scope of protection of the invention.
Embodiments provide a kind of base station electric power system, as shown in Figure 1, this system comprises multichannel AC power supply (11 ~ 13), control module 14, rectification module 15 and DC-dc conversion module 16.Wherein, rectification module 15 has ac input end 151 and the first DC output end 152, is electrically connected after the ac output end parallel connection on each road AC power (11 ~ 13) with ac input end 151.
It should be noted that, 3 tunnel AC power have been shown in Fig. 1, but the present invention is not limited to this, can be 2 roads or more than 3 tunnels.General use AC power be three-phase alternating current, it has three ac output ends, and such as three ac output ends are respectively: a, b, c.The ac output end parallel connection of above-mentioned each road AC power refers to: a end of all AC power is electrically connected, and b end is electrically connected, and c end is electrically connected, and forms three ac output ends after parallel connection respectively.
When AC power is single-phase alternating current, AC power 12 as shown in Figure 1, it only has an ac output end, and this ac output end can be connected respectively a end of other AC power, b end and c end, the output realizing single phase alternating current power supply and three-phase alternating-current supply is in parallel.
Rectification module 15 can adopt existing three-phase bridge rectifier circuit, and three ac input ends 151 of this circuit are electrically connected with three ac output ends after AC power parallel connection respectively, realizes multichannel AC power supply backward rectification module output AC electric energy in parallel.
Rectification module 15, for the alternating current inputted from ac input end 151 being converted to the direct current with the first voltage, exports from the first DC output end 152.That is, rectification module 15 can convert alternating current to direct current and export.
DC-dc conversion module 16 in the electric power system of base station has the first direct-flow input end 161 and the second DC output end 162, first DC output end 152 of rectification module 15 is electrically connected this first direct-flow input end 162, DC-dc conversion module 16 converts the direct current with the second voltage to for the direct current with the first voltage exported by rectification module 15 first DC output end 152, and exports to power to base station equipment from the second DC output end 162.That is, the direct current that rectification module 15 exports by DC-dc conversion module has carried out further process, generates the direct current that applicable base station equipment uses.
Control module 14 in the electric power system of base station, for controlling unlatching or the closedown of at least one road AC power.
In the base station electric power system that the embodiment of the present invention provides, be electrically connected with the ac input end of rectification module after the ac output end parallel connection of each road AC power, the alternating current that each road AC power exports can be converted to direct current by rectification module, then the direct current that rectification module exports directly supplies DC-dc conversion module by the direct-flow input end of DC-dc conversion module, be transformed into the direct current with given voltage, use for base station equipment, control module is only opened when needed or closes at least one road AC power, thus realize the switching of AC power, just can realize the different AC power of switching for base station equipment owing to not needing to use mechanical action switch in whole electric power system to power, therefore the failure rate existed when adopting ATS to switch multichannel AC power supply can be solved in existing electric power system high, the problem that the reliability that oil machine exports is low.
As a rule, as shown in Figure 2, multichannel AC power supply can comprise civil power 21 and the first oil machine 22." first " herein for distinguishing to some extent nominally with " the second oil machine " mentioned in embodiment below, is not only to the restriction in oil machine quantity and use order.The first oil machine 22 in multichannel AC power supply can be opened and closed by the control realization of control module 14.Three-phase alternating current is produced when first oil machine 22 is opened.
Civil power 21 is three-phase alternating current, has three ac output ends, and the first oil machine 22 also has three ac output ends, is electrically connected after the ac output end parallel connection of two kinds of AC power with rectification module 15.By such connected mode, when civil power 21 phase shortage, namely in three-phase alternating current, there is the effective value of a cross streams electricity to be 0, because the alternating current of other phase place also can input rectifying module 15, therefore can make full use of electric energy, improve efficiency of energy utilization.
Base station electric power system shown in Fig. 2 can also comprise power supply unit (power supply unit, referred to as: PSU) 23, there is the 3rd DC output end 232 be electrically connected with base station equipment 24, and the second direct-flow input end 231 to be electrically connected with DC-dc conversion module 16 second DC output end 162, power supply unit 23 converts the direct current with given voltage needed for base station equipment 24 to for the direct current with the second voltage exported by DC-dc conversion module 16 second DC output end 162.Usual second voltage has about 400v, and the voltage after PSU23 changes is 48v, exports from the 3rd DC output end 232, directly supplies base station equipment 24.PSU is conventional power-supply device, alternating current or direct current can be converted to the direct current with required voltage, and the present invention uses the object of PSU to be that high voltage direct current DC-dc conversion module 16 exported carries out step-down herein.
The current value that the 3rd DC output end 232 that control module 14 in base station electric power system shown in Fig. 2 can also be used for control PSU23 exports.Object is: before the first oil machine 22 is opened or closed, and by limiting the current value that the 3rd DC output end 232 exports, realizes No Load Start or the shutdown of the first oil machine 22; Also can realize according to the whether sufficient current value adjusting the 3rd DC output end 232 and export of the ability of AC power, to prevent the overload of AC power.Be described in detail in concrete control method embodiment of the method below.
In addition, because fault can not start, electric power system is paralysed to prevent the first oil machine 22 in the base station electric power system shown in Fig. 2, can also comprise the second oil machine 25 for subsequent use in multichannel AC power supply, and the function of control module 14 also comprises unlatching or the closedown of control second oil machine 25.
Base station electric power system shown in Fig. 2 can also comprise storage battery 26 usually, it has the charging end 261 be electrically connected with the 3rd DC output end 232 of PSU23, and the discharge end 262 to be electrically connected with base station equipment 24, the electric energy of storage for converting the direct current with given voltage by charging end 261 to electrical power storage, or is converted to the direct current with given voltage and exports base station equipment 24 to by discharge end 262 by storage battery 26; Control module is for detecting the state of storage battery 26, and the voltage namely exported according to storage battery 26 or the size of electric current, whether lower than preset value, determine storage battery 26 whether power shortage.When the voltage that storage battery 26 exports or electric current are lower than preset value, then determine storage battery 26 power shortage.The effect of storage battery 26 is in civil power power-off and the electric energy that produces of oil machine when also not arriving base station equipment 24, for base station equipment 24 provides interim electric energy, makes the power supply of base station equipment 25 uninterrupted.
In the base station electric power system that above-described embodiment provides, rectification module 15 can be that any one known to those skilled in the art can convert alternating current to galvanic circuit module, as bridge-type half-wave rectifying circuit or full-wave bridge rectifier circuit.
The embodiment of the present invention additionally provides a kind of multichannel AC power-supply switching method, for switching the multichannel AC power supply in the base station electric power system shown in Fig. 3, this base station electric power system also comprises: rectification module 33, DC-dc conversion module 34, power supply unit 35 and storage battery 36; Be electrically connected with rectification module 33 after the ac output end parallel connection of each road AC power, this rectification module 33 is electrically connected with DC-dc conversion module 34, this DC-dc conversion module 34 is electrically connected with power supply unit 35, and the DC output end 351 of this power supply unit 35 is electrically connected with storage battery 36; This multichannel AC power supply comprises civil power 31 and oil machine 32.As shown in Figure 4, this multichannel AC power-supply switching method comprises the steps.The executive agent of the method is the control module 37 in the electric power system of base station.This control module 37 is electrically connected civil power 31, oil machine 32, power supply unit 35 and storage battery 36.
401, when mains failure and discharged or defective battery time, the electric current that the DC output end of power supply unit is exported be decreased to gradually power supply unit close.
Particularly, whether civil power 31 has a power failure can be detected acquisition by control module 37 by the electrical connection between itself and civil power 31, storage battery 36 whether also can be determined by control module 37 by power shortage, control module 37 detects by the electrical connection between itself and storage battery 36 voltage and current obtaining storage battery 36 and export, and when judging the size of voltage or electric current lower than preset value, determine storage battery 36 power shortage.When mains failure and discharged or defective battery time, in order to ensure that base station electric power system can provide uninterrupted power supply for base station equipment, oil machine 32 must be made to start, for base station equipment is powered after the alternating current it produced is converted to direct current.
But oil machine 32 is in start-up course, and the inner starting current produced is comparatively large, if oil machine 32 starts when connecting load, starting current can be larger, can damage oil machine 32, therefore need load shedding time serious, start complete etc. oil machine 32, during stable operation, then connect load.Control module 37 is decreased to power supply unit gradually by the electric current making the DC output end 351 of power supply unit 35 and export and closes, and realizes load shedding.
402, open oil machine, and start timer.
Particularly, the time of timer can set according to the model of used oil machine, and the time of the oil start process need of different model is different.
403, when timer time arrives, power-on feed unit.
Power-on feed unit 35 connects load to realize oil feeder 32.
The multichannel AC power-supply switching method that the embodiment of the present invention provides is for switching the multichannel AC power supply in the electric power system of base station, in this base station electric power system, be electrically connected with the ac input end of rectification module after the ac output end parallel connection of each road AC power, the alternating current that each road AC power exports can be converted to direct current by rectification module, then the direct current that rectification module exports directly supplies DC-dc conversion module by the direct-flow input end of DC-dc conversion module, be transformed into the direct current with given voltage, use for base station equipment, control module is only opened when needed or closes at least one road AC power, thus realize the switching of AC power, just can realize the different AC power of switching for base station equipment owing to not needing to use mechanical action switch in whole electric power system to power, therefore the failure rate existed when adopting ATS to switch multichannel AC power supply can be solved in existing electric power system high, the problem that the reliability that oil machine exports is low.
After oil machine normally starts, in oil machine 32 running, the problem of oil machine scarce capacity may be there is, as the water temperature over-high of the cooling water of oil machine 32 or the output voltage of oil machine 32 very low, at this moment, if the load of connection does not change, the electric current of oil machine 32 inside will increase, the caloric value of oil machine 31 can increase, and causes water temperature to continue to increase, and serious meeting damages oil machine 32.Therefore need to perform following step 404, to prevent oil machine 32 damaged.
404, when oil machine scarce capacity, the electric current that the DC output end of power supply unit is exported reduces.
Particularly, can reduce by performing this step the load that oil machine 32 connects, ensureing the low load running of oil machine 32.
In addition, when city's power is sufficient, i.e. civil power not phase shortage, and output voltage, electric current and frequency when can reach the value that can meet to base station equipment power demands that control module 37 presets, the oil machine that can have opened is closed, to reach the object of energy savings.Therefore, this multichannel AC power-supply switching method can also comprise step as shown in Figure 5.
501, when city's power is sufficient and oil machine is opened, the electric current that the DC output end of power supply unit is exported is decreased to power supply unit gradually and closes.
Particularly; oil machine 32 is in closing process; inside also can produce larger electric current; if oil machine 32 is closed when connecting load, electric current can be larger, can damage oil machine 32 time serious; therefore need load shedding; when closing to dead halt etc. oil machine 32, then connect load, become the AC power of powering for base station equipment to make civil power.Control module 37 is decreased to power supply unit gradually by the electric current making the DC output end 351 of power supply unit 35 and export and closes, and realizes load shedding.
502, close oil machine, and start timer.
Particularly, the time of timer can set according to the model of used oil machine 32, and the oil machine 32 of different model closes the time difference of (shutdown) process need.
503, when timer time arrives, power-on feed unit.
Power-on feed unit 35 is to realize connecting load to civil power 31.
In the process using civil power 31 to power for base station equipment, the problem of civil power 31 scarce capacity may be there is, as phase shortage or output voltage, electric current or frequency can not reach the default value that can meet to base station equipment power demands of control module 37, at this moment, if the load connected does not change, the electric current on civil power 31 circuit will increase, when exceeding the maximum current that flow restricter that civil power 31 circuit is arranged can bear, flow restricter can cut off civil power 31 circuit, thus causes civil power 31 power-off.Therefore need to perform following step 504, to prevent civil power 31 power-off because of overload.
504, when civil power scarce capacity, the electric current that the DC output end of power supply unit is exported reduces.
Particularly, can reduce by performing this step the load that civil power 31 connects, ensureing the low load supplying of civil power 31.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of described claim.
Claims (10)
1. a base station electric power system, comprises multichannel AC power supply and control module, it is characterized in that, also comprises rectification module and DC-dc conversion module;
Rectification module, there is ac input end and the first DC output end, be electrically connected with described ac input end after the ac output end parallel connection of AC power described in each road, described rectification module is used for converting the alternating current inputted from described ac input end the direct current with the first voltage to, exports from described first DC output end;
DC-dc conversion module, there is the first direct-flow input end and the second DC output end, described first direct-flow input end of described first DC output end electrical connection, DC-dc conversion module is used for converting the direct current with described first voltage the direct current with the second voltage to, exports from described second DC output end to power to base station equipment;
Control module, for controlling unlatching or the closedown of AC power described at least one road.
2. base station according to claim 1 electric power system, is characterized in that, described multichannel AC power supply comprises civil power and the first oil machine;
Described control module, opens for controlling described first oil machine or closes.
3. base station according to claim 2 electric power system, it is characterized in that, also comprise power supply unit, there is the 3rd DC output end be electrically connected with base station equipment, and the second direct-flow input end to be electrically connected with described second DC output end, described power supply unit is used for the direct current with given voltage converted to by the described direct current with the second voltage needed for described base station equipment, exports from described 3rd DC output end;
Described control module is also for controlling the current value that described 3rd DC output end exports.
4. input described base station electric power system according to claim 3, it is characterized in that, described AC power also comprises the second oil machine;
Described control module, for controlling unlatching or the closedown of described second oil machine.
5. the base station electric power system according to claim 3 or 4, it is characterized in that, also comprise storage battery, there is the charging end be electrically connected with described 3rd DC output end, and the discharge end to be electrically connected with described base station equipment, described storage battery is used for converting the direct current with described given voltage by described charging end to electrical power storage, or the electric energy of storage is converted to the direct current with described given voltage and export described base station equipment to by discharge end;
Described control module is for detecting the state of described storage battery.
6. base station according to claim 1 electric power system, is characterized in that, described rectification module is bridge-type half-wave rectifying circuit or full-wave bridge rectifier circuit.
7. a multichannel AC power-supply switching method, is characterized in that, for switching the multichannel AC power supply in the electric power system of base station, described base station electric power system also comprises: rectification module, DC-dc conversion module, power supply unit and storage battery;
Be electrically connected with described rectification module after the ac output end parallel connection of AC power described in each road, described rectification module is electrically connected with described DC-dc conversion module, described DC-dc conversion module is electrically connected with described power supply unit, and the DC output end of described power supply unit is connected with described storage battery; Described multichannel AC power supply comprises civil power and oil machine;
Described method comprises:
When mains failure and discharged or defective battery time, the electric current that the DC output end of described power supply unit is exported be decreased to gradually described power supply unit close;
Open described oil machine, and start timer;
When described timer time arrives, open described power supply unit.
8. multichannel AC power-supply switching method according to claim 7, is characterized in that, also comprise: when described oil machine scarce capacity, and the electric current that the DC output end of described power supply unit is exported reduces.
9. the multichannel AC power-supply switching method according to claim 7 or 8, is characterized in that, also comprise:
When city's power is sufficient and described oil machine is opened, the electric current that the DC output end of described power supply unit is exported is decreased to described power supply unit gradually and closes;
Close described oil machine, and start described timer;
When described timer time arrives, open described power supply unit.
10. multichannel AC power-supply switching method according to claim 9, is characterized in that, also comprise: when described civil power scarce capacity, and the electric current that the DC output end of described power supply unit is exported reduces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310743780.4A CN104753162B (en) | 2013-12-30 | 2013-12-30 | Base station electric power system and its multichannel AC power-supply switching method |
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| CN105896723A (en) * | 2016-04-29 | 2016-08-24 | 浪潮集团有限公司 | Emergency power supply and emergency system |
| CN107065632A (en) * | 2017-06-15 | 2017-08-18 | 数码辰星科技发展（北京）有限公司 | A kind of electric power management circuit and system |
| CN111725885A (en) * | 2020-07-22 | 2020-09-29 | 辽宁凯信工业技术工程有限公司 | Intelligent power-switching and 5G base station standby power supply system |
| CN112104064A (en) * | 2020-09-10 | 2020-12-18 | 陕西疆晨信息科技有限公司 | Base station power supply control method, device, equipment and storage medium |
| CN114336907A (en) * | 2021-12-09 | 2022-04-12 | 华人运通(江苏)技术有限公司 | Charging control method, device, equipment and medium for charging pile |
| CN114649807A (en) * | 2020-12-18 | 2022-06-21 | 中国联合网络通信集团有限公司 | DC cabinet |
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| CN111725885A (en) * | 2020-07-22 | 2020-09-29 | 辽宁凯信工业技术工程有限公司 | Intelligent power-switching and 5G base station standby power supply system |
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| CN114649807A (en) * | 2020-12-18 | 2022-06-21 | 中国联合网络通信集团有限公司 | DC cabinet |
| CN114336907A (en) * | 2021-12-09 | 2022-04-12 | 华人运通(江苏)技术有限公司 | Charging control method, device, equipment and medium for charging pile |
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