CN106953377A - Suitable for the mobile energy storage for power supply system control method of multiple access scene - Google Patents
Suitable for the mobile energy storage for power supply system control method of multiple access scene Download PDFInfo
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- CN106953377A CN106953377A CN201710106982.6A CN201710106982A CN106953377A CN 106953377 A CN106953377 A CN 106953377A CN 201710106982 A CN201710106982 A CN 201710106982A CN 106953377 A CN106953377 A CN 106953377A
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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
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
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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
- H02J9/062—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 AC 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
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/20—Charging or discharging characterised by the power electronics converter
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention relates to a kind of mobile energy storage for power supply system control method suitable for multiple access scene there is provided the online mobile energy storage for power supply system of twin-stage type, wherein ac-dc conversion part is made up of two sets of PCS, and energy-storage system is connected with the DC side of ac-dc conversion part;System includes the tandem type interface under single power distribution network, parallel connection type interface and double distribution network interfaces with the interface type that emergency service is accessed, to the operating mode to be applied, and mobile energy storage for power supply system access enters row mode setting:It is divided into single distribution tandem type, single distribution parallel connection type is double to match somebody with somebody net type, using different control methods.Movable energy storage system can realize guarantor's electricity operation to important load in the case of the present invention realizes distinct interface, simultaneously using energy storage current electric quantity and grid side running status as Consideration, charge and discharge control is optimized to the energy-storage units in system, electric operation duration is protected in increase, that improves movable energy storage system protects infringement of the reduction to battery simultaneously of electric energy power, improves the service life of energy storage.
Description
Technical field
The present invention relates to mobile energy storage for power supply system regions, more particularly to a kind of mobile storage suitable for multiple access scene
Can control of power supply system method.
Background technology
With increasing environmental pollution, swift and violent growth, the increase of load peak-valley difference and the individual demand of need for electricity increase,
To energy-saving and emission-reduction and the further raising of power supply reliability requirement, normal life order and society that unexpected power-off will necessarily give people
Can normal operation damage, especially for load especially important in first order load, once interruption of power supply, it will cause
Great political fallout or economic loss.In addition, low in some Urban Annual Electrical Power Consumption load factors, peak value electricity consumption has period or season
The area of property needs also exist for mobile emergency supply vehicle.Such as Fujian Anxi annual spring, heat, Qiu Sanji all there is tea making electricity consumption
Rush Hour, tea making period network load surges, and peak load is 12 times usually, causes regional area, local period to occur
Low-voltage phenomenon.And in non-tea making season, electricity consumption is only general lighting electricity consumption, transformer almost no-load running, electricity consumption load factor
Low, rural power grids utilization rate of equipment and installations, power supplying efficiency are low.Mobile emergency supply vehicle is used to be supplemented as power supply in similar area, can be with
Electricity consumption peak value is effectively reduced, the design capacity of state curve road and distribution transforming can be reduced simultaneously by alleviating power network pressure, improve rural power grids and set
Standby utilization rate and power supplying efficiency.Sent out at present more than movable type electric power system using diesel-driven generator as stand-by power supply, but diesel oil
Motor starting time length needs 5~30s, and supply voltage, frequency fluctuation are big, efficiency is low, it is impossible to accomplish seamless switching, and bavin hair
Using also environment and noise pollution inevitably will be brought.Therefore a kind of cleaning, flexible, reliable power supply mode is needed badly to realize
The replacement generated electricity to conventional fuel oil, and to effective supplement of power network power supply reliability.Mobile energy storage electric power system environment friend
Good, mobility strong, integrated level are high, are a kind of effective solutions.
The content of the invention
In view of this, it is an object of the invention to provide a kind of mobile energy storage for power supply system control suitable for multiple access scene
Method, movable energy storage system can realize guarantor's electricity operation to important load in the case of realizing distinct interface, while being worked as with energy storage
Preceding electricity and grid side running status are Consideration, and the energy-storage units in system are optimized with charge and discharge control, and increase is protected
Electric operation duration, improve movable energy storage system protects infringement of the reduction to battery simultaneously of electric energy power, improves the service life of energy storage.
The present invention is realized using following scheme:A kind of mobile energy storage for power supply system controlling party suitable for multiple access scene
Method, comprises the following steps:
Step S1:There is provided a twin-stage type online mobile energy storage for power supply system, wherein ac-dc conversion part is by two sets of PCS
Constitute, net side PCS ACs are connected with power network, and DC side is connected with energy-storage system, and load side PCS ACs are connected with load,
DC side is connected with energy storage;Energy-storage system is connected with the DC side of ac-dc conversion part;The mobile energy storage for power supply system with
The interface type of emergency service access includes the tandem type interface under single power distribution network, and parallel connection type interface and double power distribution networks connect
Mouthful, to the operating mode to be applied, the mobile energy storage for power supply system access enters row mode setting:It is divided into single distribution tandem type, it is single
Distribution parallel connection type, it is double to match somebody with somebody net type;
Step S2:If the mobile energy storage for power supply system is set to single distribution tandem type, the mobile energy storage for power supply system
Into mobile energy storage startup subroutine 1;
Step S3:Judge system whether start completion, if so, then disconnecting switch QS1, the mobile energy storage for power supply system enters
Enter to enter mobile energy storage control subprogram 1, if it is not, then return to step S2;
Step S4:If the mobile energy storage for power supply system is set to single distribution parallel connection type, closure switch QS1, the shifting
Dynamic energy storage for power supply system enters mobile energy storage startup subroutine 2;
Step S5:Judge system whether start completion, the mobile energy storage for power supply system enters mobile energy storage control
Subprogram 2, if it is not, then return to step S4;
Step S6:If the mobile energy storage for power supply system is set to double distribution net type, closure switch QS1 and QS2 is described
Mobile energy storage for power supply system enters mobile energy storage startup subroutine 3;
Step S7:Judge system whether start completion, the mobile energy storage for power supply system enters mobile energy storage control
Subprogram 3, if it is not, then return to step S6.
Further, under single power distribution network tandem type interface case, the mobile energy storage for power supply system network side interface is with connecing
Mouth cabinet distribution side interface is connected, and load side interface is connected with interface cabinet load side interface, disconnected after mobile energy storage for power supply system access
Switch QS1 is powered by movable energy storage system load-side PCS for load, and grid side PCS mends electricity to energy-storage system.
Further, the mobile energy storage startup subroutine 1 is specially:Net side PCS first carries out grid-connected startup optimization, starts
Start to standby afterload side PCS, the standby rear mobile energy storage startup subroutines 1 of two PCS terminate.
Further, under single power distribution network parallel connection type interface case, close and open after the mobile energy storage for power supply system access
QS1 is closed, energy storage for power supply system is moved when detecting electric network fault and is come into operation, is that load is powered.
Further, the mobile energy storage control subprogram 1 is specially:Respectively using line voltage and energy storage SOC as x-axis, y
Axle carries out interval division, and each region is distinguished as follows:
Region 1:Work as electric network fault, battery SOC is relatively low, input side and outlet side PCS carry out shutdown operation;
Region 2:When power network is normal, battery SOC is relatively low, and input side PCS carries out invariable power charge operation, and outlet side PCS enters
Row VF is controlled;
Region 3:Work as electric network fault, energy-storage system normal work, input side PCS is shut down as the standby of outlet side PCS, defeated
Go out side PCS and carry out VF controls;
Region 4:When power network is normal, battery SOC is higher, and input side PCS carries out constant voltage floating charge current limliting operation, outlet side PCS
Carry out VF controls;
Region 5:When electric network fault and energy-storage system over-voltage fault, system-down operation, all breakers disconnect;
Region 6:When power network is normal, energy-storage system over-voltage fault, system-down is run.
Further, the mobile energy storage startup subroutine 2 is specially:Load side PCS first first carries out grid-connected start and transported
OK, start to the standby rear mobile energy storage startup subroutine 2 and terminate.
Further, control strategy of the movable energy storage system control subprogram 2 under different operating modes is as follows:
Control strategy 1:If power network breaks down, the energy content of battery is too low, and operation is shut down in mobile energy storage;
Control strategy 2:If power network breaks down, load side PCS constant voltage constant frequencies are run in mobile energy storage for power supply system;
Control strategy 3:If power network is normal, energy-storage system electricity is relatively low, and load side PCS is carried out in mobile energy storage for power supply system
Invariable power is charged, and energy-storage system is carried out to mend electricity;
Control strategy 4:If power network is normal, energy-storage system electricity is sufficient, and load side PCS is carried out in mobile energy storage for power supply system
Constant voltage floating charge is controlled, and maintains energy-storage system electricity.
Further, in the case of double power distribution networks, the net side outlet of the mobile energy storage for power supply system and load side outlet
It is connected respectively by switching QS1, QS2 with the two ends of bus connection switch, when detecting ac bus 1 or ac bus 2 breaks down
When the PCS that is connected with the port put into operation and powered for load, another PCS carries out mending electricity to energy-storage system.
Further, the movable energy storage system control control strategy under different operating modes of subprogram 3 is as follows:When two distribution
Net is normal or control strategy is identical with movable energy storage system control subprogram 2 during equal failure;When two distribution sides can
Normal work, control strategy is identical with movable energy storage system control subprogram 1 during opposite side failure.
Compared with prior art, the invention has the advantages that:
(1) guarantor's electricity to important load in the case of distinct interface can be realized;
(2) time that system protects electricity operation can be effectively improved, the system of raising protects electric energy power;
(3) the optimization discharge and recharge to energy storage can be realized, system service life is improved, O&M cost is reduced.
Brief description of the drawings
Fig. 1 is the topological schematic diagram of multistage in-line formula movable energy storage system of the present invention;
Fig. 2 is single power distribution network tandem type interface diagram of the present invention;
Fig. 3 is single power distribution network parallel connection type interface diagram of the present invention;
Fig. 4 is double distribution net type interface diagrams of the present invention;
Fig. 5 is the movable energy storage system control flow schematic diagram suitable for multiple access scene of the present invention;
Fig. 6 is the schematic flow sheet of movable energy storage system startup subroutine 1 of the present invention;
The movable energy storage system operation interval that Fig. 7 is the present invention divides schematic diagram;
Fig. 8 is the movable energy storage system control schematic diagram of subprogram 1 of the present invention;
Fig. 9 is the mobile schematic flow sheet of energy storage startup subroutine 2 of the present invention;
Figure 10 is the movable energy storage system control schematic flow sheet of subprogram 2 of the present invention;
Figure 11 is the control flow schematic diagram of control subprogram 3 of the present invention.
Embodiment
Below in conjunction with the accompanying drawings and embodiment the present invention will be further described.
The present embodiment provides a kind of mobile energy storage for power supply system control method suitable for multiple access scene, based on twin-stage type
Online movable energy storage system, its system topological are as shown in figure 1, wherein ac-dc conversion part is made up of two sets of PCS, net side
PCS ACs are connected with power network, and DC side is connected with energy-storage system, and load side PCS ACs are connected with load, DC side and storage
It can be connected;Energy-storage system is connected with the DC side of ac-dc conversion part.It is applied to mobile energy storage car important load at present and protects electricity
The interface type accessed with emergency service can be divided into the tandem type interface under single power distribution network, parallel connection type interface and double power distribution networks
Three kinds of interface, interface topology difference is as shown in Figure 2, Figure 3, Figure 4.The movable energy storage system under single power distribution network tandem type interface case
Net side interface is connected with interface cabinet distribution side interface, and load side interface is connected with interface cabinet load side interface, movable energy storage system
Disconnect switch QS1 after access to be powered for load by movable energy storage system load-side PCS, grid side PCS mends electricity to energy-storage system;It is single
Under power distribution network parallel connection type interface case, QS1 is closed after movable energy storage system access, energy storage system is moved when detecting electric network fault
System comes into operation, and is that load is powered;The net side outlet of movable energy storage system and load side outlet point under double power distribution network interface cases
It is not connected by switching QS1, QS2 with the two ends of bus connection switch, when detecting ac bus 1 or the failure of ac bus 2
The PCS being connected with the port put into operation and powered for load, and another PCS carries out mending electricity to energy-storage system.
Different charge control strategies are used according to the current SOC of energy-storage system in electric process is mended to energy-storage system simultaneously, subtracted
Few infringement of the discharge and recharge to energy storage, improves the system operation life-span.
This method specifically includes following steps, as shown in Figure 5:
Step S1:There is provided a twin-stage type online mobile energy storage for power supply system, wherein ac-dc conversion part is by two sets of PCS
Constitute, net side PCS ACs are connected with power network, and DC side is connected with energy-storage system, and load side PCS ACs are connected with load,
DC side is connected with energy storage;Energy-storage system is connected with the DC side of ac-dc conversion part;The mobile energy storage for power supply system with
The interface type of emergency service access includes the tandem type interface under single power distribution network, and parallel connection type interface and double power distribution networks connect
Mouthful, to the operating mode to be applied, the mobile energy storage for power supply system access enters row mode setting:It is divided into single distribution tandem type, it is single
Distribution parallel connection type, it is double to match somebody with somebody net type;
Step S2:If the mobile energy storage for power supply system is set to single distribution tandem type, the mobile energy storage for power supply system
Into mobile energy storage startup subroutine 1;
Step S3:Judge system whether start completion, if so, then disconnecting switch QS1, the mobile energy storage for power supply system enters
Enter to enter mobile energy storage control subprogram 1, if it is not, then return to step S2;
Step S4:If the mobile energy storage for power supply system is set to single distribution parallel connection type, closure switch QS1, the shifting
Dynamic energy storage for power supply system enters mobile energy storage startup subroutine 2;
Step S5:Judge system whether start completion, the mobile energy storage for power supply system enters mobile energy storage control
Subprogram 2, if it is not, then return to step S4;
Step S6:If the mobile energy storage for power supply system is set to double distribution net type, closure switch QS1 and QS2 is described
Mobile energy storage for power supply system enters mobile energy storage startup subroutine 3;
Step S7:Judge system whether start completion, the mobile energy storage for power supply system enters mobile energy storage control
Subprogram 3, if it is not, then return to step S6.
In the present embodiment, under single power distribution network tandem type interface case, the mobile energy storage for power supply system network side interface
It is connected with interface cabinet distribution side interface, load side interface is connected with interface cabinet load side interface, mobile energy storage for power supply system access
Disconnect switch QS1 afterwards to be powered for load by movable energy storage system load-side PCS, grid side PCS mends electricity to energy-storage system.
In the present embodiment, the mobile energy storage startup subroutine 1 is specially:Net side PCS first carries out grid-connected startup optimization,
Start to standby afterload side PCS and start, the standby rear mobile energy storage startup subroutines 1 of two PCS terminate, its controlling stream
Journey is as shown in Figure 6.
In the present embodiment, under single power distribution network parallel connection type interface case, closed after the mobile energy storage for power supply system access
Combination switch QS1, when detecting electric network fault, movement energy storage for power supply system comes into operation, and is that load is powered.
In the present embodiment, the mobile energy storage control subprogram 1 is specially:Respectively using line voltage and energy storage SOC as x
Axle, y-axis carries out interval division, as shown in fig. 7, system control process is as shown in figure 8, each region distinguishes as follows:
Region 1:Work as electric network fault, battery SOC is relatively low, input side and outlet side PCS carry out shutdown operation;
Region 2:When power network is normal, battery SOC is relatively low, and input side PCS carries out invariable power charge operation, and outlet side PCS enters
Row VF is controlled;
Region 3:Work as electric network fault, energy-storage system normal work, input side PCS is shut down as the standby of outlet side PCS, defeated
Go out side PCS and carry out VF controls;
Region 4:When power network is normal, battery SOC is higher, and input side PCS carries out constant voltage floating charge current limliting operation, outlet side PCS
Carry out VF controls;
Region 5:When electric network fault and energy-storage system over-voltage fault, system-down operation, all breakers disconnect;
Region 6:When power network is normal, energy-storage system over-voltage fault, system-down is run.
In the present embodiment, the mobile energy storage startup subroutine 2 is specially:Load side PCS first carries out grid-connected open first
Dynamic operation, startup terminates to the standby rear mobile energy storage startup subroutine 2, and its control flow is as shown in Figure 9.
In the present embodiment, control strategy of the movable energy storage system control subprogram 2 under different operating modes is as follows, its
Control flow is as shown in Figure 10:
Control strategy 1:If power network breaks down, the energy content of battery is too low, and operation is shut down in mobile energy storage;
Control strategy 2:If power network breaks down, load side PCS constant voltage constant frequencies are run in mobile energy storage for power supply system;
Control strategy 3:If power network is normal, energy-storage system electricity is relatively low, and load side PCS is carried out in mobile energy storage for power supply system
Invariable power is charged, and energy-storage system is carried out to mend electricity;
Control strategy 4:If power network is normal, energy-storage system electricity is sufficient, and load side PCS is carried out in mobile energy storage for power supply system
Constant voltage floating charge is controlled, and maintains energy-storage system electricity.
In the present embodiment, the movable energy storage system control control strategy under different operating modes of subprogram 3 is as follows, and it is controlled
Flow processed is as shown in figure 11:When two power distribution networks are normal or control strategy controls sub- journey with the movable energy storage system during equal failure
Sequence 2 is identical;When two distribution sides being capable of normal work, control strategy and the movable energy storage system control during opposite side failure
Program 1 is identical.
The foregoing is only presently preferred embodiments of the present invention, all impartial changes done according to scope of the present invention patent with
Modification, should all belong to the covering scope of the present invention.
Claims (9)
1. a kind of mobile energy storage for power supply system control method suitable for multiple access scene, it is characterised in that:Comprise the following steps:
Step S1:There is provided a twin-stage type online mobile energy storage for power supply system, wherein ac-dc conversion part is by two sets of PCS structures
Into net side PCS ACs are connected with power network, and DC side is connected with energy-storage system, and load side PCS ACs are connected with load, directly
Stream side is connected with energy storage;Energy-storage system is connected with the DC side of ac-dc conversion part;The mobile energy storage for power supply system is with answering
The interface type of anxious power supply access includes the tandem type interface under single power distribution network, parallel connection type interface and double distribution network interfaces,
To the operating mode to be applied, the mobile energy storage for power supply system access enters row mode setting:It is divided into single distribution tandem type, single distribution
Parallel connection type, it is double to match somebody with somebody net type;
Step S2:If the mobile energy storage for power supply system is set to single distribution tandem type, the mobile energy storage for power supply system enters
Mobile energy storage startup subroutine 1;
Step S3:Judge system whether start completion, if so, then disconnecting switch QS1, the mobile energy storage for power supply system enters
Enter mobile energy storage control subprogram 1, if it is not, then return to step S2;
Step S4:If the mobile energy storage for power supply system is set to single distribution parallel connection type, closure switch QS1, the mobile storage
Energy electric power system enters mobile energy storage startup subroutine 2;
Step S5:Judge system whether start completion, the mobile energy storage for power supply system enters mobile energy storage and controls sub- journey
Sequence 2, if it is not, then return to step S4;
Step S6:If the mobile energy storage for power supply system is set to double distribution net type, closure switch QS1 and QS2, the movement
Energy storage for power supply system enters mobile energy storage startup subroutine 3;
Step S7:Judge system whether start completion, the mobile energy storage for power supply system enters mobile energy storage and controls sub- journey
Sequence 3, if it is not, then return to step S6.
2. a kind of mobile energy storage for power supply system control method suitable for multiple access scene according to claim 1, it is special
Levy and be:Under single power distribution network tandem type interface case, the mobile energy storage for power supply system network side interface matches somebody with somebody net side with interface cabinet
Interface is connected, and load side interface and interface cabinet load side interface is connected, after mobile energy storage for power supply system access disconnection switch QS1 by
Movable energy storage system load-side PCS powers for load, and grid side PCS mends electricity to energy-storage system.
3. a kind of mobile energy storage for power supply system control method suitable for multiple access scene according to claim 1, it is special
Levy and be:The mobile energy storage startup subroutine 1 is specially:Net side PCS first carries out grid-connected startup optimization, starts to standby rear negative
Lotus side PCS starts, and the standby rear mobile energy storage startup subroutines 1 of two PCS terminate.
4. a kind of mobile energy storage for power supply system control method suitable for multiple access scene according to claim 1, it is special
Levy and be:Under single power distribution network parallel connection type interface case, closure switch QS1 after the mobile energy storage for power supply system access works as inspection
Energy storage for power supply system is moved when measuring electric network fault to come into operation, and is that load is powered.
5. a kind of mobile energy storage for power supply system control method suitable for multiple access scene according to claim 1, it is special
Levy and be:The mobile energy storage control subprogram 1 is specially:Respectively using line voltage and energy storage SOC as x-axis, y-axis carries out interval
Divide, each region is distinguished as follows:
Region 1:Work as electric network fault, battery SOC is relatively low, input side and outlet side PCS carry out shutdown operation;
Region 2:When power network is normal, battery SOC is relatively low, and input side PCS carries out invariable power charge operation, and outlet side PCS carries out VF
Control;
Region 3:Work as electric network fault, energy-storage system normal work, input side PCS shuts down standby, the outlet side as outlet side PCS
PCS carries out VF controls;
Region 4:When power network is normal, battery SOC is higher, and input side PCS carries out constant voltage floating charge current limliting operation, and outlet side PCS is carried out
VF is controlled;
Region 5:When electric network fault and energy-storage system over-voltage fault, system-down operation, all breakers disconnect;
Region 6:When power network is normal, energy-storage system over-voltage fault, system-down is run.
6. a kind of mobile energy storage for power supply system control method suitable for multiple access scene according to claim 1, it is special
Levy and be:The mobile energy storage startup subroutine 2 is specially:Load side PCS first first carries out grid-connected startup optimization, starts to treating
The mobile energy storage startup subroutine 2 terminates after machine.
7. a kind of mobile energy storage for power supply system control method suitable for multiple access scene according to claim 1, it is special
Levy and be:Control strategy of the movable energy storage system control subprogram 2 under different operating modes is as follows:
Control strategy 1:If power network breaks down, the energy content of battery is too low, and operation is shut down in mobile energy storage;
Control strategy 2:If power network breaks down, load side PCS constant voltage constant frequencies are run in mobile energy storage for power supply system;
Control strategy 3:If power network is normal, energy-storage system electricity is relatively low, and load side PCS carries out permanent work(in mobile energy storage for power supply system
Rate is charged, and energy-storage system is carried out to mend electricity;
Control strategy 4:If power network is normal, energy-storage system electricity is sufficient, and load side PCS carries out constant pressure in mobile energy storage for power supply system
Floating charge is controlled, and maintains energy-storage system electricity.
8. a kind of mobile energy storage for power supply system control method suitable for multiple access scene according to claim 1, it is special
Levy and be:In the case of double power distribution networks, the net side outlet of the mobile energy storage for power supply system and load side outlet are respectively by opening
Close QS1, QS2 with the two ends of bus connection switch to be connected, when detecting ac bus 1 or the failure of ac bus 2 with the port
Connected PCS put into operation and powered for load, and another PCS carries out mending electricity to energy-storage system.
9. a kind of mobile energy storage for power supply system control method suitable for multiple access scene according to claim 1, it is special
Levy and be:The movable energy storage system control control strategy under different operating modes of subprogram 3 is as follows:When two power distribution networks are normal or
Control strategy is identical with movable energy storage system control subprogram 2 during equal failure;When two distribution sides can normal work, separately
Control strategy is identical with movable energy storage system control subprogram 1 during the failure of side.
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CN109995064A (en) * | 2019-04-12 | 2019-07-09 | 富能宝能源科技有限公司 | A kind of mobile energy storage cluster power supply system |
CN110401213A (en) * | 2019-06-26 | 2019-11-01 | 中国电力科学研究院有限公司 | A kind of multi-mode movable energy storage system and its control method |
CN111384718A (en) * | 2020-02-27 | 2020-07-07 | 华为技术有限公司 | Power supply device, power supply system and data center |
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