CN105162125B - Ac/dc is for electric installation and uninterruptible power system - Google Patents
Ac/dc is for electric installation and uninterruptible power system Download PDFInfo
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- CN105162125B CN105162125B CN201510707260.7A CN201510707260A CN105162125B CN 105162125 B CN105162125 B CN 105162125B CN 201510707260 A CN201510707260 A CN 201510707260A CN 105162125 B CN105162125 B CN 105162125B
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Abstract
This application discloses ac/dcs for electric installation and uninterruptible power system.One specific implementation mode of described device includes：Ac/dc conversion line, for realizing the mutual conversion between direct current and alternating current；The alternating current that the AC power exports for powering for AC load by the AC power, and is converted to direct current by ac power supply line by the ac/dc conversion line；Direct current supply line, for when AC power power supply is normal, it is charged for the DC power supply by the direct current being converted to by the ac/dc conversion line, and it powers for DC load, when the AC power abnormal electrical power supply, it is powered for the DC load by the DC power supply, and the direct current that the DC power supply exports is converted to by alternating current by the ac/dc conversion line and is powered for the AC load.This embodiment improves power supply reliabilities.
Description
Technical field
This application involves power supply technique fields, and in particular to uninterrupted power supply technical field more particularly to ac/dc supply
Electric installation and uninterruptible power system.
Background technology
In data center's power supply-distribution system at this stage, important IT (Information Technology, information skill
Art) server is generally used dual power supply, and for two-way power supply, construction for electricity provides hardware foundation simultaneously for this.In order to ensure system
Stability, power supply system generally use " two-way UPS (Uninterruptible Power System, uninterruptible power supply)/
The powering mode of HVDC (High-Voltage Direct Current, high voltage direct current) " or " alternating current+UPS/HVDC ".
" two-way UPS/HVDC " although system reliability is high, power-supply device configuration capacity is big, and initial investment is of high cost, and
And most of time is " UPS/HVDC " work all the way, so running efficiency of system is relatively low.The side of " alternating current+UPS/HVDC "
Formula saves the initial investment of " UPS/HVDC " all the way, and compared to 2N, (2N is exactly 2 different transmission lines of electricity to running efficiency of system
Under, N platforms UPS is composed in parallel a system by every transmission line of electricity respectively, and N platforms UPS respectively exports (100/N) %) it is doubled,
But system reliability also declines therewith.Power supply system only has circuit backup, if power system failure, IT servers will be by single channel
Alternating current supplies, and risk is uncontrollable.
Invention content
This application provides ac/dcs for electric installation and uninterruptible power system, with solve to mention in background technology
Technical problem.
On the one hand, this application provides a kind of ac/dcs for electric installation, and described device includes：
Ac/dc conversion line, for realizing the mutual conversion between direct current and alternating current；
Ac power supply line is connect with AC power and the ac/dc conversion line, for passing through the alternating current
Source powers for AC load, and is converted to the alternating current that the AC power exports by the ac/dc conversion line
Direct current；
Direct current supply line is connect with DC power supply, is used for when AC power power supply is normal, by by the friendship
The direct current that stream/direct current conversion line is converted to charges for the DC power supply, and powers for DC load, when the exchange
When power supply power supply exception, powered for the DC load by the DC power supply, and pass through the ac/dc conversion line
The direct current that the DC power supply exports is converted to alternating current and powered for the AC load by road；
Power supply state monitor, the power supply state monitor is connect with the AC power, for monitoring the exchange
The power supply state of power supply；
Circuit is overhauled, the first end of the maintenance circuit is connect with the AC power, the second end of the maintenance circuit
It is connect with the AC load, for the ac/dc conversion line, ac power supply line and direct current supply line to be isolated；
Switch controller is opened with the power supply state monitor, first switch, second switch, third switch, the 4th respectively
Pass is connected with static switch, for controlling the first switch, second switch, third according to the power supply state of the AC power
The working condition of switch, the 4th switch and static switch, the switch controller further include：Discharge mode controller is verified, is used
It is opened in when AC power power supply is normal, being respectively closed the first switch, the closure static switch, being closed described second
It closes, be closed the third switch and be closed the 4th switch.
In some embodiments, the ac power supply line includes：
Static switch is closed, in alternating current for connecting AC power and AC load when AC power power supply is normal
It is disconnected when the abnormal electrical power supply of source；
First switch, the first end of the first switch are connect with the AC power, the second end of the first switch
It is connect with the first end of the static switch, for being switched on or switched off the electric current for flowing through the static switch；
Second switch, the first end of the second switch are connect with the second end of the static switch, the second switch
Second end connect with the AC load, for being switched on or switched off the alternating current powered to the AC load.
In some embodiments, the direct current supply line includes：
Third switchs, and the first end of the third switch is connect with the DC power supply, described straight for being switched on or switched off
Galvanic electricity source；
The first end of 4th switch, the 4th switch is connect with the second end that the third switchs, the 4th switch
Second end connect with the DC load, for being switched on or switched off the direct current powered to the DC load.
In some embodiments, the ac/dc conversion line includes：
Ac/dc reversible transducer, the of exchange end and the static switch of the ac/dc reversible transducer
Two ends connect, and the DC terminal of the ac/dc reversible transducer is connect with the second end that the third switchs, for that will exchange
Electricity is converted to direct current, or direct current is converted to alternating current.
In some embodiments, the switch controller includes：
Rectification mode controller, for when AC power power supply is normal, being respectively closed described in the first switch, closure
Static switch is closed the second switch, is closed the third switch and is closed the 4th switch；
Powering mode controller is protected, in AC power abnormal electrical power supply, being each turned off the first switch, closure
The second switch is closed the third switch and is closed the 4th switch.
In some embodiments, the maintenance circuit includes the 5th switch, the first end of the 5th switch and the friendship
Galvanic electricity source connects, and the second end of the 5th switch is connect with the AC load.
Second aspect, this application provides a kind of uninterruptible power systems, and the system comprises the confessions of above-mentioned ac/dc
Electric installation.
In some embodiments, two ac/dcs constitute uninterrupted power supply unit for electric installation, it is single described not
Interruptedly supplying power unit is two groups of load supplyings, and load described in every group includes AC load and DC load, each exchange/straight
Flow the AC load connected for electric installation and DC load be not belonging to same group described in load.
Ac/dc provided by the present application leads to for electric installation and uninterruptible power system when AC power power supply is normal
It crosses ac power supply line to power for AC load, and is turned by the alternating current that ac/dc conversion line exports AC power
It is changed to direct current, is respectively that DC power supply charging and DC load are powered by direct current；In AC power abnormal electrical power supply, directly
Supply line is flowed to power for DC load by DC power supply, and exported DC power supply by ac/dc conversion line
Direct current is converted to alternating current and powers for AC load, improves power supply reliability.
Description of the drawings
By reading a detailed description of non-restrictive embodiments in the light of the attached drawings below, the application's is other
Feature, objects and advantages will become more apparent upon：
Fig. 1 is the structural schematic diagram for one embodiment of electric installation according to the ac/dc of the application；
Fig. 2 is the structure chart for electric installation under rectification mode according to the ac/dc of the application；
Fig. 3 is the structure chart for electric installation under load protection pattern according to the ac/dc of the application；
Fig. 4 is the structure chart for electric installation in the case where verifying discharge mode according to the ac/dc of the application；
Fig. 5 is the structure chart for electric installation under maintenance model according to the ac/dc of the application；
Fig. 6 is the structure chart according to the uninterruptible power system of the application.
Specific implementation mode
The application is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining related invention, rather than the restriction to the invention.It also should be noted that in order to
Convenient for description, is illustrated only in attached drawing and invent relevant part with related.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The application is described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
Fig. 1 shows the structural schematic diagram of the ac/dc of the application for one embodiment of electric installation 100.This implementation
Example ac/dc include for electric installation 100：Ac/dc conversion line 101, ac power supply line 102 and direct current supply line
Road 103.Wherein, ac/dc conversion line 101 is for realizing the mutual conversion between direct current and alternating current；Alternating Current Power Supply
Circuit 102 is connect with AC power and the ac/dc conversion line 101, for being that exchange is negative by above-mentioned AC power
Power supply is carried, and the alternating current that above-mentioned AC power exports is converted to by direct current by above-mentioned ac/dc conversion line 101；
Direct current supply line 103 is connect with DC power supply, for when the power supply of above-mentioned AC power is normal, by by above-mentioned exchange/straight
The direct current that stream conversion line 101 is converted to charges for above-mentioned DC power supply, and powers for DC load, when above-mentioned alternating current
When the abnormal electrical power supply of source, powered for above-mentioned DC load by above-mentioned DC power supply, and pass through above-mentioned ac/dc conversion line
The direct current that above-mentioned DC power supply exports is converted to alternating current by 101 powers for above-mentioned AC load.
Ac/dc provided by the present application passes through Alternating Current Power Supply line for electric installation 100 when AC power power supply is normal
Road 102 powers for AC load, and is converted to the alternating current that AC power exports directly by ac/dc conversion line 101
Galvanic electricity is respectively that DC power supply charging and DC load are powered by direct current；In AC power abnormal electrical power supply, direct current supply
Circuit 103 is powered by DC power supply for DC load, and exported DC power supply by ac/dc conversion line 101
Direct current is converted to alternating current and powers for AC load, improves power supply reliability.
With further reference to Fig. 2, the structure chart Fig. 2 shows the ac/dc of the application for electric installation under rectification mode,
Component part below by way of Fig. 2 to ac/dc for electric installation 100 illustrates.As shown in Figure 2, ac power supply line 102
Further include static switch 1021, first switch 1022 and second switch 1023.Wherein, static switch 1021 is for connecting alternating current
Source and AC load are closed when AC power power supply is normal, are disconnected in AC power abnormal electrical power supply；Static switch has fast
Fast response characteristic can in time disconnect in AC power abnormal electrical power supply, avoid damaging electricity consumption device, and in direct current
When electric inversion is that exchange supplies electricity to AC load power supply, alternating current is avoided to feed back to AC power；It can also restore in AC power
It is closed in time when powering normal；The first end of above-mentioned first switch 1022 is connect with above-mentioned AC power；Above-mentioned first switch
1022 second end is connect with the first end of above-mentioned static switch 1021, for being switched on or switched off the electricity for flowing through above-mentioned static switch
Stream；The first end of above-mentioned second switch 1023 is connect with the second end of above-mentioned static switch 1021, above-mentioned second switch 1023
Second end is connect with above-mentioned AC load, for being switched on or switched off the alternating current powered to above-mentioned AC load.
In some optional realization methods of the present embodiment, above-mentioned direct current supply line 103 includes third switch 1031
With the 4th switch 1032.Wherein, the first end of above-mentioned third switch 1031 is connect with above-mentioned DC power supply, for being switched on or switched off
Above-mentioned DC power supply；The first end of above-mentioned 4th switch 1032 is connect with the second end of above-mentioned third switch 1031, and the above-mentioned 4th
The second end of switch 1032 is connect with above-mentioned DC load, for being switched on or switched off the direct current powered to above-mentioned DC load.
In some optional realization methods of the present embodiment, above-mentioned ac/dc conversion line 101 includes exchange/straight
Flow reversible transducer 1011, the exchange end of above-mentioned ac/dc reversible transducer 1011 and the second of above-mentioned static switch 1021
End connection, the DC terminal of above-mentioned ac/dc reversible transducer 1011 connect with the second end of above-mentioned third switch 1031, are used for
Alternating current is converted into direct current, or direct current is converted into alternating current.
In some optional realization methods of the present embodiment, ac/dc can also include power supply shape for electric installation 100
State monitor (not shown), above-mentioned power supply state monitor is connect with above-mentioned AC power, for monitoring above-mentioned alternating current
The power supply state in source.
In some optional realization methods of the present embodiment, ac/dc can also include switch control for electric installation 100
Device (not shown) processed, switch controller respectively with above-mentioned power supply state monitor, first switch 1022, second switch
1023, third switch 1031, the 4th switch 1032 and static switch 1021 connect, for the power supply state control according to AC power
Make the work of above-mentioned first switch 1022, second switch 1023, third switch 1031, the 4th switch 1032 and static switch 1021
State.
Above-mentioned switch controller pointedly can control above-mentioned switch according to the power supply state of AC power.On
It may include that rectification mode controller (not shown) and protection powering mode controller (do not show in figure to state switch controller
Go out).Wherein, rectification mode controller is used to, when AC power power supply is normal, be respectively closed above-mentioned first switch 1022, be closed
Above-mentioned static switch 1021 is closed above-mentioned second switch 1023, is closed above-mentioned third switch 1031 and is closed above-mentioned 4th switch
1032, realize that AC power powers to AC load and DC load, and be the purpose of DC power supply charging；Protect powering mode
Controller is used in AC power abnormal electrical power supply, be each turned off above-mentioned first switch 1022, be closed above-mentioned second switch 1023,
It is closed above-mentioned third switch 1031 and is closed above-mentioned 4th switch 1032, realize through DC power supply to be that AC load and direct current are negative
Carry the purpose of power supply.Above-mentioned switch controller can also include verification discharge mode controller (not shown), verification electric discharge
Mode controller is used to, when AC power power supply is normal, be respectively closed above-mentioned first switch 1022, be closed above-mentioned static switch
1021, it is closed above-mentioned second switch 1023, be closed above-mentioned third switch 1031 and is closed above-mentioned 4th switch 1032, realization is being protected
While card is AC load and DC load normal power supply, verification electric discharge is carried out to DC power supply.
In some optional realization methods of the present embodiment, ac/dc can also include repair line for electric installation 100
The first end on road 104, above-mentioned maintenance circuit 104 is connect with above-mentioned AC power, second end and the above-mentioned friendship of above-mentioned maintenance circuit
Current load connects, for above-mentioned ac/dc conversion line 101, ac power supply line 102 and direct current supply line 103 to be isolated.
Above-mentioned maintenance circuit 104 includes the 5th switch 1041, and the first end of above-mentioned 5th switch 1041 is connect with above-mentioned AC power, on
The second end for stating the 5th switch 1041 is connect with above-mentioned AC load.
With further reference to Fig. 2, rectification mode refers to the pattern of AC power normal power supply.Under rectification mode, it is closed the
One switch 1022, second switch 1023, third switch 1031 and the 4th switch 1032 disconnect the 5th switch 1041.AC power
The alternating current of output is powered by first switch 1022, static switch 1021 and second switch 1023 to AC load；Static state is opened
The exchange end of 1021 second ends connection ac/dc reversible transducer 1011 is closed, alternating current is through ac/dc reversible transducer
Direct current is obtained after 1011 conversions.There are two types of purposes for direct current：First, being charged to DC power supply by third switch 1031；Second is that
It is powered to DC load by the 4th switch 1032.
With further reference to Fig. 3, it illustrates the ac/dcs of the application for electric installation 100 under load protection pattern
Structure chart.Load protection pattern refers to situations such as AC power appearance power supply is lost or power supply is transfinited, and leads to the mould of abnormal electrical power supply
Formula.Under load protection pattern, in order to protect device not damaged by abnormal current, disconnection first switch 1022 and the 5th is needed to open
1041 are closed, second switch 1023, third switch 1031 and the 4th switch 1032 are closed.At this point, DC power supply is switched by third
1031 and the 4th switch 1032 to DC load power；And direct current is converted to by ac/dc reversible transducer 1011
Alternating current, then power to AC load through second switch 1023.It realizes in AC power abnormal electrical power supply, passes through DC power supply
To the normal power supply of AC load and DC load, electrical stability is improved.
With further reference to Fig. 4, it illustrates the ac/dcs of the application for electric installation 100 in the case where verifying discharge mode
Structure chart.When rectification mode, AC power charges to DC power supply.DC power supply is usually battery, and battery needs to consider to fill
Electricity condition.Therefore, it is necessary to be spaced setting time to carry out discharge examination to battery, that is, verify discharge mode.In verification discharge mode
Under, it is closed first switch 1022, second switch 1023, third switch 1031 and the 4th switch 1032, disconnects the 5th switch 1041,
Static switch 1021 is connected.
It verifies under discharge mode, battery is discharged in a manner of constant current or invariable power, and discharge process includes：If electric
The discharge power in pond is more than the consumption power of load (AC load and/or DC load), then extra discharge power passes through friendship
Stream/1011 inversion of direct current reversible transducer gives other power loads to power；If the discharge power of battery is less than load consumption work(
Rate then loads the discharge power lacked and is provided by AC power.
With further reference to Fig. 5, the structure chart it illustrates the ac/dc of the application for electric installation under maintenance model.
Maintenance model is that exception occur in ac/dc conversion line 101, ac power supply line 102 and/or direct current supply line 103, or
Pattern when ac/dc is for 100 periodic maintenance of electric installation.Under maintenance model, first switch 1022 and third switch are disconnected
1031, it is closed second switch 1023, the 4th switch 1032 and the 5th switch 1041.At this point, since first switch 1022 disconnects, the
Five switches 1041 are closed, and AC power can only power to AC load, are no longer DC power supply charging and DC load power supply.The
Three switches 1031 disconnect, and DC power supply is also no longer that DC load and AC load are powered.
The present embodiment additionally provides a kind of uninterruptible power system, and above system includes above-mentioned ac/dc for Denso
Set 100.Majority needs the equipment of uninterrupted power supply usually while including AC load and DC load, in order to improve the confession of equipment
Two above-mentioned ac/dcs are usually constituted uninterrupted power supply unit 601 by electrical stability for electric installation 100, it is single it is above-mentioned not between
Cut-off electric unit 601 is two groups of load supplyings, and every group of above-mentioned load includes AC load and DC load, each above-mentioned exchange/
The AC load and DC load that DC power supply apparatus 100 connects are not belonging to same group of above-mentioned load, i.e., each above-mentioned exchange/straight
Stream is two groups of load crossfeeds for electric installation 100 namely every group of load is simultaneously for electric installation 100 by two ac/dcs
It is powered.Due to each ac/dc in electric installation 100 ac power supply line 102 and direct current supply line 103 can be
DC load and AC load power supply, this, which allows for N platform equipment, has the power supply reliability of 2N platform equipment.
Above description is only the preferred embodiment of the application and the explanation to institute's application technology principle.People in the art
Member should be appreciated that invention scope involved in the application, however it is not limited to technology made of the specific combination of above-mentioned technical characteristic
Scheme, while should also cover in the case where not departing from the inventive concept, it is carried out by above-mentioned technical characteristic or its equivalent feature
Other technical solutions of arbitrary combination and formation.Such as features described above has similar work(with (but not limited to) disclosed herein
Can technical characteristic replaced mutually and the technical solution that is formed.
Claims (8)
1. a kind of ac/dc is for electric installation, which is characterized in that described device includes：
Ac/dc conversion line, for realizing the mutual conversion between direct current and alternating current；
Ac power supply line is connect with AC power and the ac/dc conversion line, for being by the AC power
AC load is powered, and the alternating current that the AC power exports is converted to direct current by the ac/dc conversion line
Electricity；
Direct current supply line is connect with DC power supply, for when the AC power power supply it is normal when, by by it is described exchange/
The direct current that direct current conversion line is converted to charges for the DC power supply, and powers for DC load, when the alternating current
When the abnormal electrical power supply of source, powered for the DC load by the DC power supply, and pass through the ac/dc conversion line
The direct current that the DC power supply exports is converted to alternating current to power for the AC load；
Power supply state monitor, the power supply state monitor is connect with the AC power, for monitoring the AC power
Power supply state；
Circuit is overhauled, the first end of the maintenance circuit is connect with the AC power, the second end of the maintenance circuit and institute
AC load connection is stated, for the ac/dc conversion line, ac power supply line and direct current supply line to be isolated；
Switch controller, respectively with the power supply state monitor, first switch, second switch, third switch, the 4th switch and
Static switch connects, and is opened for controlling the first switch, second switch, third according to the power supply state of the AC power
It closes, the working condition of the 4th switch and static switch, the switch controller further includes：Discharge mode controller is verified, is used for
When AC power power supply is normal, be respectively closed the first switch, be closed the static switch, be closed the second switch,
It is closed the third switch and is closed the 4th switch.
2. the apparatus according to claim 1, which is characterized in that the ac power supply line includes：
Static switch is closed for connecting AC power and AC load when AC power power supply is normal, is supplied in AC power
It is disconnected when electrical anomaly；
First switch, the first end of the first switch are connect with the AC power, the second end of the first switch and institute
The first end connection for stating static switch, for being switched on or switched off the electric current for flowing through the static switch；
Second switch, the first end of the second switch are connect with the second end of the static switch, and the of the second switch
Two ends are connect with the AC load, for being switched on or switched off the alternating current powered to the AC load.
3. the apparatus of claim 2, which is characterized in that the direct current supply line includes：
Third switchs, and the first end of the third switch is connect with the DC power supply, for being switched on or switched off the direct current
Source；
The first end of 4th switch, the 4th switch is connect with the second end that the third switchs, the described 4th switch the
Two ends are connect with the DC load, for being switched on or switched off the direct current powered to the DC load.
4. device according to claim 3, which is characterized in that the ac/dc conversion line includes：
Ac/dc reversible transducer, the second end at the exchange end and the static switch of the ac/dc reversible transducer
Connection, the DC terminal of the ac/dc reversible transducer are connect with the second end that the third switchs, for turning alternating current
It is changed to direct current, or direct current is converted into alternating current.
5. device according to claim 4, which is characterized in that the switch controller includes：
Rectification mode controller, for when AC power power supply is normal, being respectively closed the first switch, being closed the static state
It switchs, be closed the second switch, being closed the third switch and be closed the 4th switch；
Powering mode controller is protected, in AC power abnormal electrical power supply, being each turned off described in the first switch, closure
Second switch is closed the third switch and is closed the 4th switch.
6. the apparatus according to claim 1, which is characterized in that the maintenance circuit includes the 5th switch, and the described 5th opens
The first end of pass is connect with the AC power, and the second end of the 5th switch is connect with the AC load.
7. a kind of uninterruptible power system, which is characterized in that the system comprises any exchanges of claim 1 to 6/straight
Stream is for electric installation.
8. system according to claim 7, which is characterized in that two ac/dcs constitute uninterrupted for electric installation
Power supply unit, the single uninterrupted power supply unit is two groups of load supplyings, and load includes AC load and direct current described in every group
Load, the AC load and DC load that each ac/dc is connected for electric installation be not belonging to same group described in load.
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106023447A (en) * | 2016-07-25 | 2016-10-12 | 杭州排山信息科技有限公司 | Power management system applied to public bike system |
| CN106300531B (en) * | 2016-08-31 | 2018-12-21 | 西安特锐德智能充电科技有限公司 | A kind of power supply change-over device based on charging pile |
| CN107196490A (en) * | 2017-06-12 | 2017-09-22 | 中车青岛四方车辆研究所有限公司 | The control method of power circuit, railway vehicle air conditioner and power circuit |
| CN107749665A (en) * | 2017-11-29 | 2018-03-02 | 国网上海市电力公司 | A kind of locking power supply uninterrupted power supply device and its application process |
| CN108400650A (en) * | 2018-03-14 | 2018-08-14 | 中国能源建设集团广东省电力设计研究院有限公司 | Power of alterating and direct current integral system |
| CN112187026A (en) * | 2020-09-02 | 2021-01-05 | 安徽绿沃循环能源科技有限公司 | Energy storage circuit and energy storage device |
| CN112653140B (en) * | 2020-12-17 | 2023-05-02 | 深圳供电局有限公司 | Power supply control method, device and storage medium |
| CN113708609B (en) * | 2021-07-16 | 2023-08-22 | 厦门华睿晟智能科技有限责任公司 | AC/DC integrated power supply and control method |
| CN114899936A (en) * | 2022-05-10 | 2022-08-12 | 华为数字能源技术有限公司 | Power distribution circuit, method for controlling power supply of power distribution circuit and power supply system |
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| CN201854080U (en) * | 2010-03-05 | 2011-06-01 | 天津市爱和德电源系统有限公司 | Contactless intelligent compensating ultralow power consumption uninterrupted power supply (UPS) |
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