CN103915891A - Power supply system and method - Google Patents
Power supply system and method Download PDFInfo
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- CN103915891A CN103915891A CN201410153965.4A CN201410153965A CN103915891A CN 103915891 A CN103915891 A CN 103915891A CN 201410153965 A CN201410153965 A CN 201410153965A CN 103915891 A CN103915891 A CN 103915891A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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Abstract
The invention discloses a power supply system. The power supply system comprises a load, a first charger, a first storage battery set, a direct current busbar for the load and a standby power system, wherein the load is connected with the city electricity; the first charger is connected with the first storage battery set and the first charger charges the first storage battery set; the direct current busbar for the load is connected with the first storage battery set, and the first storage battery set supplies power to the load through the direct current busbar for the load when error occurs in the city electricity; the standby power system is connected with the direct current busbar for the load and supplies power to the load through the direct current busbar for the load after the preset time when error occurs in the city electricity. The power supply system has the advantages of being simplified in structure, high in practicability, high in reliability, high in maintainability, high in efficiency and low in production investment. The invention further discloses a power supply method.
Description
Technical field
The present invention relates to power technique fields, relate in particular to a kind of electric power system and method for supplying power to.
Background technology
In existing data center, conventionally use UPS(Uninterruptible Power System, uninterrupted power supply) be main power supply unit.But this equipment exists, conversion efficiency is low, Harmonics of Input is large, reliability is low, high in cost of production shortcoming.Under this background, HVDC(high-voltage direct current, high voltage direct current transmission) technology enters people's the visual field, and moves to maturity gradually.
At present, the supply power voltage of domestic high voltage dc transmission technology main flow is 240V, the framework form of this power supply technique is that the output of use rectifier and storage battery output are articulated on same DC bus, realized the power supply to bearing power and accumulator cell charging and discharging is managed by direct current supply control system.For example, as shown in Figure 1, current high voltage direct current electric power system framework has continued traditional mode, is made up of rectifier cubice and direct current cabinet, and rectification module output-parallel is articulated on DC bus, is load supplying after diode.In the time of high voltage direct current electric power system normal power supply, switch A1 and B1 closure, switch A2 and B2 disconnect, and storage battery is in floating charge state; In the time of high voltage direct current electric power system fault, storage battery passes through the direct current supply bus of direct current cabinet to load discharge, is load supplying thereby can realize high-voltage direct current under off-line mode.
But there is following problem in existing off-line type high voltage dc transmission technology:
1) be made up of traditional rectifier cubice and direct current cabinet, system architecture is wordy;
2) electric power system is relatively independent, cannot realize power supply unit sharing between power supply group;
3) if diode is short-circuited; above-mentioned decoupling zero framework is by destroyed; particularly two group storage battery voltages are when inconsistent; there will be uncontrollable and larger circulation; so need to add protection switch in order to shorten large electric current at batteries front end to the impact of batteries, make so crucial switching device quantity increase.
Summary of the invention
The present invention is intended to solve at least to a certain extent one of above-mentioned technological deficiency.
For this reason, one object of the present invention be to propose a kind of have simplify the structure, practicality is high, reliability is high, maintainability is high, efficiency is high, produce the electric power system that drops into low advantage.
Another object of the present invention is to propose a kind of method of supplying power to.
To achieve these goals, the electric power system of one aspect of the present invention embodiment, comprising: load, and described load is connected with civil power; The first charger and the first batteries, described the first charger is connected with described the first batteries, and described the first charger is described the first battery charging; Load DC bus, described load is connected with described the first batteries with DC bus, and described the first batteries is described load supplying by described load DC bus in the time that civil power breaks down; And standby power system, described standby power system is connected with DC bus with described load and is described load supplying by described load DC bus after scheduled time after civil power breaks down.
, at least there is following advantage in the electric power system of the embodiment of the present invention: 1) adopt the mode of the complete off-line of high voltage direct current, power supplying efficiency is higher than the power supply plan of traditional high voltage direct current line model output; 2) off-line mode construction for electricity is more succinct, by configuring two groups of chargers, realizes charging redundancy, facilitates the charging to storage battery under isolated instances; 3) crucial switching device usage quantity is few, has reduced input cost, and has reduced the complexity of system control; 4) control flow is optimized greatly, and electric power system is more intelligent in the time that normal mode, cell test mode and fault emergency mode switch, and has greatly reduced O&M personnel's participation, has improved the reliabilty and availability of system; 5) off-line mode has removed rectifier cubice, only need, to a small amount of charging module of charger arrangement, optimize structure and reduce cost.
To achieve these goals, the present invention is the method for supplying power to of embodiment on the other hand, comprising: judge whether the civil power being connected with load breaks down; If so be, described load supplying by the first batteries and the second batteries; Whether the current electric quantity that judges described the first batteries and the second batteries is all less than default electric weight; And if be described load supplying by standby power system.
The method of supplying power to of the embodiment of the present invention, in the time that the civil power being connected with load breaks down, can be load supplying by the first batteries and the second batteries; In the time that the current electric quantity of the first batteries and the second batteries is all less than default electric weight, can be load supplying by standby power system, in the time being in an emergency, can carry out transition by storage battery, guarantee to there will not be the phenomenon of the power failure to load in the time that system is switched, and can not have heavy current impact to storage battery while having guaranteed system switching.
The aspect that the present invention is additional and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Accompanying drawing explanation
The present invention above-mentioned and/or additional aspect and advantage will become from the following description of the accompanying drawings of embodiments obviously and easily and understand, wherein,
Fig. 1 is the structural representation of existing high voltage direct current electric power system;
Fig. 2 is the structural representation of off-line mode electric power system according to an embodiment of the invention;
Fig. 3 is the structural representation of electric power system off-line mode power supply control according to an embodiment of the invention;
Fig. 4 is the flow chart of method of supplying power to according to an embodiment of the invention.
Embodiment
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Be exemplary below by the embodiment being described with reference to the drawings, be intended to for explaining the present invention, and can not be interpreted as limitation of the present invention.
Describe according to the electric power system of the embodiment of the present invention and method of supplying power to below with reference to accompanying drawing.
Fig. 2 is the structural representation of off-line mode electric power system according to an embodiment of the invention.Fig. 3 is the structural representation of electric power system off-line mode power supply control according to an embodiment of the invention.
As shown in Figures 2 and 3, this electric power system can comprise: load 10, the first charger 20, the first batteries 30, DC bus 40 and standby power system 50 for load.
Wherein, in an embodiment of the present invention, as shown in Figure 2, load 10 is connected with civil power, i.e. load 10 is connected with civil power direct-furnish bus.The first charger 20 is connected with the first batteries 30, and the first charger 20 can be the first batteries 30 and charges.Wherein, load 10 can be the blade server that is for example applied in data center, many power supplys server, printer, scanner, facsimile machine etc.
As shown in Figure 2, load is connected with the first batteries 30 with DC bus 40, and the first batteries 30 can use DC bus 40 to power for load 10 by load in the time that civil power breaks down.
As shown in Figure 2, standby power system 50 is connected with DC bus 40 with load, and can use DC bus 40 to power for load 10 by load after scheduled time after civil power breaks down.
Further, in one embodiment of the invention, as shown in Figure 3, this electric power system can also comprise power-supply controller 60, power-supply controller 60 is connected with the first charger 20, and power-supply controller 60 can be controlled the charging voltage of the first charger 20 to the first batteries 30.
Further, in one embodiment of the invention, as shown in Figure 2, this electric power system also comprises the first switch 70 and second switch 80.Wherein, one end of the first switch 70 is connected with the first batteries 30, and the other end of the first switch 70 is connected with DC bus 40 with load.One section of second switch 80 is connected with the first batteries 30, and the other end of second switch 80 is connected with DC bus 90 with test.
Further, in one embodiment of the invention, as shown in Figure 2, this electric power system also comprises the second charger 100 and the second batteries 110.Wherein, the second charger 100 is connected with the second batteries 110, and the second charger 100 can be the second batteries 110 and charges.Wherein, in an embodiment of the present invention, power-supply controller 60 also can be connected with the second charger 100, and power-supply controller 60 can be controlled the charging voltage of the second charger 100 to the second batteries 110.
Further, in one embodiment of the invention, as shown in Figure 2, this electric power system can also comprise the 3rd switch 120 and the 4th switch 130.Wherein, one end of the 3rd switch 120 is connected with the second batteries 110, and the other end of the 3rd switch 120 is connected with DC bus 40 with load.One end of the 4th switch 130 is connected with the second batteries 110, and the other end of the 4th switch 130 is connected with DC bus 90 with test.
Wherein, in one embodiment of the invention, between the first charger 20 and the second charger 100, can there is communication connection.That is to say, the first charger 20 can carry out signal by communication connection with the second charger 100 and communicate by letter.For example, use DC bus 90 to carry out the electric discharge of the first batteries 30 and the second batteries 110 by test, the first batteries 30 and the second batteries 110 are carried out to maintaining, in the time of the first batteries 30 discharge test, need to guarantee that the second batteries 110 is online, and the two does not interfere with each other; After the first batteries 30 discharge tests complete, recover after fully charged state until the first batteries 30, notify the second batteries 110 to make it carry out discharge test by communication connection.Wherein, in an embodiment of the present invention, communication connection can be order wire.
It should be noted that, in an embodiment of the present invention, due to battery management function is distributed on each Battery pack, and there is communication connection between two groups of chargers, so in civil power normal power supply situation, two group storage batteries and charger are a set of DC bus 40 for system access load, and the two redundancy each other, have improved reliability; Under battery discharge test case, the first switch 70 and the 3rd switch 120 fault blocks, battery management function is distributed to charger, and electric power system realizes decoupling zero.Thus, power supply unit redundancy while having realized normal power supply, the battery discharge full decoupled system management effect of system of when test.
Further, in one embodiment of the invention, standby power system 50 can comprise rectifier cubice 51, DC bus for subsequent use 52 and the 5th switch 53.Wherein, rectifier cubice 51 can comprise at least one rectification module, and one end of rectifier cubice 51 is connected with ac bus 54.DC bus 52 for subsequent use is connected with rectifier cubice 51, and one end of DC bus 52 for subsequent use is connected with the other end of rectifier cubice 51.One end of the 5th switch 53 is connected with the other end of DC bus 52 for subsequent use, and the other end of the 5th switch 53 is connected with DC bus 40 with load.
It should be noted that, in an embodiment of the present invention, the first charger 20, the first batteries 30, the first switch 70, second switch 80, the second charger 100, the second batteries 110, the 3rd switch 120, the 4th switch 130 and power-supply controller 60 can form sub-electric power system A.Wherein, in one embodiment of the invention, sub-electric power system A can be multiple, and load 10 can be multiple, and load can be multiple with DC bus 40, and load 10 all can be identical with the number of sub-electric power system A by the number of DC bus 40 with load.Should be appreciated that when group electric power system A is multiple, the 5th switch 53 in standby power system 50 also should be multiple, and the number of the 5th switch 53 should be identical with the number of sub-electric power system A.
Elaborate function and the operation principle of each part in electric power system below in conjunction with Fig. 2 and Fig. 3.
1) electric power system part: as shown in Figures 2 and 3, this electric power system can be made up of multiple sub-electric power system A, for example, as shown in Figure 2, by sub-electric power system A(1#), sub-electric power system A(2#) ... sub-electric power system A(n#) composition.Wherein, the system configuration of every sub-electric power system A is all identical, powers to respectively corresponding load 10.Sub-electric power system A can be linked into test with on DC bus 90 by second switch 80 and the 4th switch 130, can reach the object of battery discharging test under high voltage direct current off-line mode, has improved the maintainability of system.
2) sub-electric power system part: as shown in Figures 2 and 3, take sub-electric power system A(1#) be example, sub-electric power system A(1#) in can comprise two groups of chargers, i.e. the first charger 20 and the second charger 100, two group storage battery groups, i.e. the first batteries 30 and the second batteries 110 and two groups of corresponding switches, i.e. the first switch 70 and second switch 80, the 3rd switch 120 and the 4th switch 130.Wherein, the management that the first charger 20 and the second charger 100 charge, discharge the first batteries 30 and the second batteries 110 respectively.
3) standby power system part: be also furnished with a set of standby power system 50 in this electric power system.Take sub-electric power system A(1#) be example, rectifier cubice 51 is linked on DC bus 52 for subsequent use, sub-electric power system A(1#) be connected with DC bus 52 for subsequent use by the 5th switch 53, DC bus 52 for subsequent use and sub-electric power system A(1#) in the first switch 70, the 3rd switch 120 coordinate the load 10 that can be sub-electric power system A to make redundant power supply, improved thus the reliability of entire system.Should be appreciated that standby power system 50 is linked in sub-electric power system A by DC bus 52 for subsequent use and each corresponding the 5th switch 53 of sub-electric power system A, thus, realizes sharing of multiple sub-electric power systems.
Elaborate the operation principle of off-line mode in electric power system below in conjunction with Fig. 2 and Fig. 3.
In one embodiment of the invention, power-supply controller 60 is connected with the first charger 20, and power-supply controller 60 can be controlled the output state of the first charger 20.Wherein, in an embodiment of the present invention, output state can include but not limited to one or more in voltage, electric current and power that the first charger 20 exports.
In one embodiment of the invention, when the electric weight of the first batteries 30 is during lower than default electric weight, it is that the first batteries 30 is charged that power-supply controller 60 can be controlled the first charger 20.Wherein, default electric weight can be system default, or arrange in system.In addition, power-supply controller 60 is gone back the power output of capable of regulating the first charger 20 so that the charging current of the first batteries 30 keeps constant.
In one embodiment of the invention, the output voltage that power-supply controller 60 is gone back capable of regulating the first charger 20 is to complete the charging to the first batteries 30.
In one embodiment of the invention, under off-line mode, in the time that civil power is normally worked, civil power is born 100% load, and the first charger 20 and the second charger 100 are in accumulators floating charge power supply state.
Particularly, take sub-electric power system A(1#) be example.When normal work, civil power is born whole power stages.The first batteries 30 accesses load DC bus 40 in support.Be appreciated that in the time that civil power is normally worked, direct current is without providing power stage to load 10 under off-line mode, and with this, the first 20 of chargers need meet the no-load loss of the first batteries 30 chargings and power supply, have significantly reduced the input cost of system.The first charger 20 has been realized on-line redundance simultaneously, has improved system reliability.
Standby power system 50 configures the rectification module 511 of full capacity, at least can provide power at full capacity for a sub-electric power system A, most rectification modules 511 in rectifier cubice 51 are in resting state under normal circumstances, and rectifier cubice 51 is in Hot Spare state, i.e. output voltage but output current not.When the civil power in a sub-electric power system A breaks down while maybe needing to safeguard, closed the 5th switch 53, rectifier cubice 51 is powered to the load 10 in the sub-electric power system of fault by DC bus 52 for subsequent use.
More specifically, under off-line mode, power-supply controller 60 is controlled closed the first switch 70, and disconnect second switch 80, the first charger 20 and the first batteries 30 access to DC bus 40 for load, now the first charger 20 output voltage 270V, and the first batteries 30 is in floating charge state.In the time being in an emergency (as civil power breaks down etc.), while needing the first batteries 30 that power stage is provided, the first charger 20 enters permanent power mode along with bearing power improves, and electric current raises and lower voltage, now the first batteries 30 starts electric discharge, to make up the raising of load.After the first battery pack 30 electric discharges finish, enter the first batteries 30 current-sharing charge modes.It should be noted that, because the first charger 20 configuration capacities are less, so can not there is the possibility of large current charge.In addition, be to be understood that, the second charger 100, the second batteries 110, the 3rd switch 120 and the 4th switch 130 in sub-electric power system A are identical with the function of the first charger 20, the first batteries 30, the first switch 70 and the second switch 80 of above-mentioned explanation, no longer multiple superfluous herein.
In addition, also can use DC bus 90 to carry out discharge test to the first batteries 30 by test.Particularly, take the first batteries 30 as example, in the time of the first batteries 30 discharge test, power-supply controller 60 is controlled second switch 80 closures, and controlling the first switch 70 disconnects, make the first batteries 30 completely and load DC bus 40 isolate, now the first batteries 30 can be powered to discharge load B.After the first batteries 30 discharge tests finish, second switch 80 disconnects, and the first charger 20 charges to the first batteries 30, after the first batteries 30 is full of, and closed the first switch 70, system returns to the front state of discharge test.
Should be appreciated that and also can carry out by the way discharge test to the second batteries 110, its principle is identical, no longer multiple superfluous herein.In addition, it should be noted that, in the time that the first batteries 30 is carried out to discharge test, need to guarantee that the second batteries 110 in sub-electric power system A is online.In addition, after the first batteries 30 discharge tests complete, the first batteries 30 need to be returned to after fully charged state, notify the second batteries 110 by the communication connection between the first charger 20 and the second charger 100, make it carry out discharge test.Thus, can reduce the risk in test.
In addition, take sub-electric power system A(1#) be example, group electric power system A(1#) civil power break down while maybe needing to safeguard, the first batteries 30 and the second batteries 110 are powered to load 10 by corresponding respectively the first switch 70 and the 3rd switch 120.Now, closed the 5th switch 53, rectifier cubice 51 in standby power system 50 will automatically start in tens seconds, and start to take over the first batteries 30 and the second batteries 110, be that the voltage of DC bus 52 for subsequent use is higher than the voltage of the first batteries 30 and the second batteries 110, the first batteries 30 and the second batteries 110 stop load 10 to power, and turn by DC bus 52 for subsequent use load 10 is powered.Thus, guaranteed that system can not have heavy current impact to storage battery in the time of switching.
, at least there is following advantage in the electric power system of the embodiment of the present invention: 1) adopt the mode of the complete off-line of high voltage direct current, power supplying efficiency is higher than the power supply plan of traditional high voltage direct current line model output; 2) off-line mode construction for electricity is more succinct, by configuring two groups of chargers, realizes charging redundancy, facilitates the charging to storage battery under isolated instances; 3) crucial switching device usage quantity is few, has reduced input cost, and has reduced the complexity of system control; 4) control flow is optimized greatly, and electric power system is more intelligent in the time that normal mode, cell test mode and fault emergency mode switch, and has greatly reduced O&M personnel's participation, has improved the reliabilty and availability of system; 5) off-line mode has removed rectifier cubice, only need, to a small amount of charging module of charger arrangement, optimize structure and reduce cost.
In sum, the electric power system of the embodiment of the present invention have advantages of simplify the structure, practicality is high, reliability is high, maintainability is high, efficiency is high, produce drop into low.
For this reason, the embodiment of the present invention has also proposed a kind of method of supplying power to.
Fig. 4 is the flow chart of method of supplying power to according to an embodiment of the invention.
It should be noted that, in an embodiment of the present invention, this method of supplying power to can be used in the electric power system of above-described embodiment.Therefore, be appreciated that electric power system can comprise load, the first charger and the first batteries, the second charger and the second batteries, second switch and the 4th switch etc.Particularly, as shown in Figure 4, this method of supplying power to can comprise:
S401, judges whether the civil power being connected with load breaks down.
S402 if so, is load supplying by the first batteries and the second batteries.
S403, judges whether the current electric quantity of the first batteries and the second batteries is all less than default electric weight.
Wherein, in one embodiment of the invention, default electric weight can be system default, or arrange in system.
S404 if so, is load supplying by standby power system.
Particularly, in the time that the civil power being connected with load breaks down or need to safeguard, can power to load by the first batteries and the second batteries.Now, the 5th switch in closed standby power system, rectifier cubice in standby power system will automatically start in tens seconds, and start to take over the first batteries and the second batteries, be that the voltage of the DC bus for subsequent use in standby power system is higher than the voltage of the first batteries and the second batteries, the first batteries and the second batteries stop load supplying, turn by DC bus for subsequent use load supplying.Thus, guaranteed that system can not have heavy current impact to storage battery in the time of switching.
Further, in one embodiment of the invention, this method of supplying power to can also comprise: control the output voltage of the first charger and the second charger respectively the first batteries and the second batteries are charged.For example, when the electric weight of the first batteries and the second batteries is during lower than default electric weight, can control respectively the first charger and the second charger and be respectively corresponding the first batteries and the second battery charging.Wherein, can adjust respectively the power output of the first charger and the second charger so that the charging current of the first batteries and the second batteries keeps constant.In addition the output voltage that, also can adjust respectively the first charger and the second charger is to complete the charging to the first batteries and the second batteries.
Further, in one embodiment of the invention, this method of supplying power to can also comprise: when second switch is closed and the first batteries when load was disconnected with being connected between DC bus, control the first batteries is discharged.Particularly, when second switch is closed and the first batteries when load was disconnected with being connected between DC bus, the complete and load of the first batteries is isolated with DC bus, now can control the first batteries discharge load is discharged.
Further, in one embodiment of the invention, this method of supplying power to can also comprise: when the 4th switch is closed and the second batteries when load was disconnected with being connected between DC bus, control the second batteries is discharged.Particularly, when the 4th switch is closed and the second batteries when load was disconnected with being connected between DC bus, the complete and load of the second batteries is isolated with DC bus, now can control the second batteries discharge load is discharged.
Wherein, in one embodiment of the invention, between the first charger and the second charger, there is communication connection.It should be noted that, in the time that the first batteries is carried out to discharge test, need to guarantee that the second batteries is online.In addition, after the first batteries discharge test completes, the first batteries need to be returned to after fully charged state, notify the second batteries by the communication connection between the first charger and the second charger, make it carry out discharge test.Thus, can reduce the risk in test.Wherein, in an embodiment of the present invention, communication connection can be order wire.
The method of supplying power to of the embodiment of the present invention, in the time that the civil power being connected with load breaks down, can be load supplying by the first batteries and the second batteries; In the time that the current electric quantity of the first batteries and the second batteries is all less than default electric weight, can be load supplying by standby power system, in the time being in an emergency, can carry out transition by storage battery, guarantee to there will not be the phenomenon of the power failure to load in the time that system is switched, and can not have heavy current impact to storage battery while having guaranteed system switching.
Any process of otherwise describing in flow chart or at this or method are described and can be understood to, represent to comprise that one or more is for realizing module, fragment or the part of code of executable instruction of step of specific logical function or process, and the scope of the preferred embodiment of the present invention comprises other realization, wherein can be not according to order shown or that discuss, comprise according to related function by the mode of basic while or by contrary order, carry out function, this should be understood by embodiments of the invention person of ordinary skill in the field.
The logic and/or the step that in flow chart, represent or otherwise describe at this, for example, can be considered to the sequencing list of the executable instruction for realizing logic function, may be embodied in any computer-readable medium, use for instruction execution system, device or equipment (as computer based system, comprise that the system of processor or other can and carry out the system of instruction from instruction execution system, device or equipment instruction fetch), or use in conjunction with these instruction execution systems, device or equipment.With regard to this specification, " computer-readable medium " can be anyly can comprise, device that storage, communication, propagation or transmission procedure use for instruction execution system, device or equipment or in conjunction with these instruction execution systems, device or equipment.The example more specifically (non-exhaustive list) of computer-readable medium comprises following: the electrical connection section (electronic installation) with one or more wirings, portable computer diskette box (magnetic device), random-access memory (ram), read-only memory (ROM), the erasable read-only memory (EPROM or flash memory) of editing, fiber device, and portable optic disk read-only memory (CDROM).In addition, computer-readable medium can be even paper or other the suitable medium that can print described program thereon, because can be for example by paper or other media be carried out to optical scanner, then edit, decipher or process in electronics mode and obtain described program with other suitable methods if desired, be then stored in computer storage.
Should be appreciated that each several part of the present invention can realize with hardware, software, firmware or their combination.In the above-described embodiment, multiple steps or method can realize with being stored in software or the firmware carried out in memory and by suitable instruction execution system.For example, if realized with hardware, the same in another embodiment, can realize by any one in following technology well known in the art or their combination: there is the discrete logic for data-signal being realized to the logic gates of logic function, there is the application-specific integrated circuit (ASIC) of suitable combinational logic gate circuit, programmable gate array (PGA), field programmable gate array (FPGA) etc.
Those skilled in the art are appreciated that realizing all or part of step that above-described embodiment method carries is can carry out the hardware that instruction is relevant by program to complete, described program can be stored in a kind of computer-readable recording medium, this program, in the time carrying out, comprises step of embodiment of the method one or a combination set of.
In addition, the each functional unit in each embodiment of the present invention can be integrated in a processing module, can be also that the independent physics of unit exists, and also can be integrated in a module two or more unit.Above-mentioned integrated module both can adopt the form of hardware to realize, and also can adopt the form of software function module to realize.If described integrated module realizes and during as production marketing independently or use, also can be stored in a computer read/write memory medium using the form of software function module.
The above-mentioned storage medium of mentioning can be read-only memory, disk or CD etc.
In addition, term " first ", " second " be only for describing object, and can not be interpreted as indication or hint relative importance or the implicit quantity that indicates indicated technical characterictic.Thus, at least one this feature can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ".In description of the invention, the implication of " multiple " is at least two, for example two, and three etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the terms such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or integral; Can be mechanical connection, can be also electrical connection; Can be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements, unless separately there is clear and definite restriction.For the ordinary skill in the art, can understand as the case may be above-mentioned term concrete meaning in the present invention.
In the description of this specification, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present invention or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, to the schematic statement of above-mentioned term not must for be identical embodiment or example.And, specific features, structure, material or the feature of description can one or more embodiment in office or example in suitable mode combination.In addition,, not conflicting in the situation that, those skilled in the art can carry out combination and combination by the feature of the different embodiment that describe in this specification or example and different embodiment or example.
Although illustrated and described embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, modification, replacement and modification.
Claims (12)
1. an electric power system, is characterized in that, comprising:
Load, described load is connected with civil power;
The first charger and the first batteries, described the first charger is connected with described the first batteries, and described the first charger is described the first battery charging;
Load DC bus, described load is connected with described the first batteries with DC bus, and described the first batteries is described load supplying by described load DC bus in the time that civil power breaks down; And
Standby power system, described standby power system is connected with DC bus with described load and is described load supplying by described load DC bus after scheduled time after civil power breaks down.
2. electric power system as claimed in claim 1, is characterized in that, further comprises:
Power-supply controller, described power-supply controller is connected with described the first charger, the charging voltage of the first charger to described the first batteries described in described power-supply controller control.
3. electric power system as claimed in claim 1, is characterized in that, further comprises:
The first switch, one end of described the first switch is connected with described the first batteries, and the other end of described the first switch is connected with DC bus with described load; And
Second switch, one end of described second switch is connected with described the first batteries, and the other end of described second switch is connected with DC bus with test.
4. electric power system as claimed in claim 1, is characterized in that, further comprises:
The second charger and the second batteries, described the second charger is connected with described the second batteries, and described the second charger is described the second battery charging.
5. electric power system as claimed in claim 4, is characterized in that, further comprises:
The 3rd switch, one end of described the 3rd switch is connected with described the second batteries, and the other end of described the 3rd switch is connected with DC bus with described load; And
The 4th switch, one end of described the 4th switch is connected with described the second batteries, and the other end of described the 4th switch is connected with DC bus with test.
6. the electric power system as described in claim 1 or 4, is characterized in that, between described the first charger and described the second charger, has communication connection.
7. electric power system as claimed in claim 1, is characterized in that, described standby power system comprises:
Rectifier cubice, described rectifier cubice comprises at least one rectification module, one end of described rectifier cubice is connected with ac bus;
The DC bus for subsequent use being connected with described rectifier cubice, one end of described DC bus for subsequent use is connected with the other end of described rectifier cubice;
The 5th switch, described the 5th one end of switch and the other end of described DC bus for subsequent use are connected, and the other end of described the 5th switch is connected with DC bus with described load.
8. a method of supplying power to, is characterized in that, comprising:
Judge whether the civil power being connected with load breaks down;
If so be, described load supplying by the first batteries and the second batteries;
Whether the current electric quantity that judges described the first batteries and the second batteries is all less than default electric weight; And
If so be, described load supplying by standby power system.
9. method of supplying power to as claimed in claim 8, is characterized in that, further comprises:
Control the output voltage of the first charger and the second charger respectively described the first batteries and described the second batteries are charged.
10. method of supplying power to as claimed in claim 8, is characterized in that, further comprises:
In the time that second switch is closed and described the first batteries and load are disconnected with being connected between DC bus, controls described the first batteries and discharge.
11. method of supplying power to as claimed in claim 8, is characterized in that, further comprise:
In the time that the 4th switch is closed and described the second batteries and described load are disconnected with being connected between DC bus, controls described the second batteries and discharge.
12. method of supplying power to as claimed in claim 9, is characterized in that, between described the first charger and described the second charger, have communication connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410153965.4A CN103915891A (en) | 2014-04-16 | 2014-04-16 | Power supply system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410153965.4A CN103915891A (en) | 2014-04-16 | 2014-04-16 | Power supply system and method |
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| CN103915891A true CN103915891A (en) | 2014-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410153965.4A Pending CN103915891A (en) | 2014-04-16 | 2014-04-16 | Power supply system and method |
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| CN104821727A (en) * | 2015-04-24 | 2015-08-05 | 深圳市禾望电气股份有限公司 | Switch power supply suitable for high-overvoltage-grade high-altitude place |
| CN109687569A (en) * | 2018-12-11 | 2019-04-26 | 漳州科华技术有限责任公司 | Data center's power supply system |
| CN110323824A (en) * | 2018-03-28 | 2019-10-11 | 广州道动新能源有限公司 | Control method, device, computer equipment and the storage medium of power-supply system |
| CN110601338A (en) * | 2019-08-19 | 2019-12-20 | 深圳供电局有限公司 | Power supply method of power-loss direct-current bus and power supply system of power-loss direct-current bus |
| WO2023056772A1 (en) * | 2021-10-09 | 2023-04-13 | 珠海格力电器股份有限公司 | Power supply switching method and apparatus, and multi-power supply system |
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| CN104821727A (en) * | 2015-04-24 | 2015-08-05 | 深圳市禾望电气股份有限公司 | Switch power supply suitable for high-overvoltage-grade high-altitude place |
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| CN110601338A (en) * | 2019-08-19 | 2019-12-20 | 深圳供电局有限公司 | Power supply method of power-loss direct-current bus and power supply system of power-loss direct-current bus |
| CN110601338B (en) * | 2019-08-19 | 2022-02-08 | 深圳供电局有限公司 | Power supply method of power-loss direct-current bus and power supply system of power-loss direct-current bus |
| WO2023056772A1 (en) * | 2021-10-09 | 2023-04-13 | 珠海格力电器股份有限公司 | Power supply switching method and apparatus, and multi-power supply system |
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Application publication date: 20140709 |