CN109494860A - The solar grid-connected off-network energy storage three-in-one integral machine of Line interaction and control method - Google Patents
The solar grid-connected off-network energy storage three-in-one integral machine of Line interaction and control method Download PDFInfo
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- CN109494860A CN109494860A CN201811270444.1A CN201811270444A CN109494860A CN 109494860 A CN109494860 A CN 109494860A CN 201811270444 A CN201811270444 A CN 201811270444A CN 109494860 A CN109494860 A CN 109494860A
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- 238000004146 energy storage Methods 0.000 title claims abstract description 23
- 230000003993 interaction Effects 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000004804 winding Methods 0.000 claims abstract description 26
- 230000002441 reversible effect Effects 0.000 claims abstract description 20
- 230000005611 electricity Effects 0.000 claims description 38
- 238000005286 illumination Methods 0.000 claims description 12
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 6
- 230000006870 function Effects 0.000 abstract description 11
- 230000006872 improvement Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 4
- 238000010248 power generation Methods 0.000 description 3
- 230000000087 stabilizing effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other DC sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other DC sources, e.g. providing buffering with light sensitive cells
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- H02J3/385—
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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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- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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- Supply And Distribution Of Alternating Current (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses the solar grid-connected off-network energy storage three-in-one integral machine of Line interaction and control method, all-in-one machine includes utility grid interface, loading interfaces, photovoltaic plate interface, transformer module, reversible transducer, battery group interface, processor module, clock module, display module and MPPT inverter；The output winding of transformer module is connected by reversible transducer with battery group interface, photovoltaic plate interface is connected with the output winding of battery group interface and transformer module respectively by MPPT inverter, and processor module is connected with clock module, display module, MPPT inverter and reversible transducer respectively.Three kinds of functions of grid-connected off-network energy storage of solar energy photovoltaic system are effectively bonded together by the present invention by reversible transducer, MPPT inverter and transformer module, realize integrated function, pool control is carried out by processor module, substantially increases the intelligence degree of device.
Description
Technical field
The present invention relates to solar powered technical fields.
Background technique
In solar powered field, traditional solar grid-connected machine is to be unable to do without alternating current, that is, is unable to off-network work, institute
Without configuring battery group.It and is exactly at present using traditional solar grid-connected by the solar energy roof electricity generation system of favor
Machine, the civilian solar energy roof basic operating condition of electricity generation system are using solar power system to sell electricity daytime, are utilized at night
Mains-supplied uses, and is equivalent to and buys electricity, thus the economic benefit is not high.
Therefore related technical personnel propose a kind of three-in-one solar power generation system of grid-connected off-network energy storage in the technical field
System, this solar power system are only configured with mains-supplied mode and solar battery complementation powering mode, and work is former
Reason are as follows: solar energy charges to battery, and when battery capacity meets the preferential setting value of inversion, electricity generation system disconnects alternating current, has too
Positive to power with battery inversion, when cell voltage is lower, electricity generation system accesses alternating current again, is filled using solar energy to battery
Electricity so recycles.But this is only simply to combine grid-connected machine off-network machine and battery group, and grid-connected and off-network is
It is independently separated, it cannot achieve integration, cost of manufacture is high, and intelligence degree is insufficient.
Summary of the invention
The technical problem to be solved by the present invention is providing a kind of solar grid-connected off-network energy storage three-in-one one of Line interaction
Body machine and its control method.
The solution that the present invention solves its technical problem is:
The solar grid-connected off-network energy storage three-in-one integral machine of Line interaction, utility grid interface, loading interfaces, solar energy
Photovoltaic plate interface, transformer module, reversible transducer, battery group interface, processor module, clock module, display module with
And the MPPT inverter configured with MPPT algorithm, the transformer module include input winding and output winding；The alternating current
Grid interface is connected by the input winding of transformer module with loading interfaces, and the output winding of the transformer module passes through double
It is connected to converter with battery group interface, the photovoltaic plate interface is connect with battery group respectively by MPPT inverter
The output winding of mouth and transformer module is connected, and the processor module is inverse with clock module, display module, MPPT respectively
Become device and reversible transducer is connected.
It as a further improvement of the above technical scheme, is toroidal transformer module used in the transformer module.
As a further improvement of the above technical scheme, the technical program further includes that the first diverter branch and second shunt
Branch, first diverter branch include several dividing cells in parallel, and each dividing cell includes the first relay RY1
And the both ends thermistor R1, the thermistor R1 connect shunt branch in the first relay RY1 output contact, described second respectively
Road includes the switching time of the second relay RY2, the second relay RY2 of two or more parallel connections being less than 8ms, and described the
The switching time of one relay RY1 is greater than 8ms；First diverter branch is connected with the second diverter branch, the utility grid
Interface is connected with the first diverter branch, and second diverter branch is connected with the input winding of transformer module, the processor
Module is connected with each first relay RY1 and the second relay RY2 respectively.
As a further improvement of the above technical scheme, second diverter branch is configured with multiple, the input winding
Configured with multiple taps, it is described input winding each tap respectively with the second relay RY2 phase of each second diverter branch
Even.
As a further improvement of the above technical scheme, the technical program further includes multiple diodes, multiple two poles
The anode of pipe is connected with AC-DC power module by a resistance, the cathode of each diode respectively with each first after
Electric appliance RY1 and the second relay RY2 is connected.
As a further improvement of the above technical scheme, the specification of the first relay RY1 is switching voltage 12V, is cut
Change electric current 120A；The specification of the second relay RY2 is switching voltage 12V, switching electric current 40A.
The present invention also discloses a kind of controls of the solar grid-connected off-network energy storage three-in-one integral machine of Line interaction
Method, comprising the following steps:
Step 100, according to user demand, the maximum power of user's evening time-division electricity consumption is calculated, be set the time-division in the user's evening
The electricity consumption time；
Step 200, according to the maximum power and electricity consumption time for calculating obtained user's evening electricity consumption, battery is configured
Group；
Step 300, the time-division on daytime passes through MPPT inverter using solar energy photovoltaic panel and transformer module is respectively electric power storage
Pond group charges and is load supplying, generates electricity by way of merging two or more grid systems simultaneously；
Step 400, according to load real time power requirements, battery group passes through reversible transducer and transformation the time-division in the evening
Device module is load supplying.
As a further improvement of the above technical scheme, step 300 specifically includes the following steps:
Step 310, intensity of illumination critical value is set；
Step 320, real-time lighting intensity is detected；
Step 330, when real-time lighting intensity is greater than intensity of illumination critical value, solar energy photovoltaic panel passes through MPPT inverter
It is respectively battery charging and for load supplying with transformer module, generates electricity by way of merging two or more grid systems simultaneously, when real-time lighting intensity is less than
When intensity of illumination critical value, solar energy photovoltaic panel by MPPT inverter and transformer module be respectively battery charging and
For load supplying, and it is load supplying that utility grid passes through transformer module simultaneously.
As a further improvement of the above technical scheme, in step 300, divide during the day, operational mode can be set online,
The operational mode includes grid-connected transmission mode；According to whether choosing grid-connected transmission mode, determine to be greater than when real-time lighting intensity
When intensity of illumination critical value, the whether grid-connected power supply of solar energy photovoltaic panel.
As a further improvement of the above technical scheme, in step 300 when detecting that utility grid has a power failure, by load
Power supply mode is switched to solar energy photovoltaic panel and the hybrid power supply of battery group.
The beneficial effects of the present invention are: the present invention will too by reversible transducer, MPPT inverter and transformer module
Three kinds of functions of grid-connected off-network energy storage of positive energy photovoltaic system are effectively bonded together, and are realized integrated function, are passed through processor
Module carries out pool control, substantially increases the intelligence degree of device.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described.Obviously, described attached drawing is a part of the embodiments of the present invention, rather than is all implemented
Example, those skilled in the art without creative efforts, can also be obtained according to these attached drawings other designs
Scheme and attached drawing.
Fig. 1 is system framework figure of the invention；
Fig. 2 is the circuit diagram of the embodiment of the present invention 1.
Fig. 3 is the circuit diagram of the embodiment of the present invention 2.
Specific embodiment
It is carried out below with reference to technical effect of the embodiment and attached drawing to design of the invention, specific structure and generation clear
Chu, complete description, to be completely understood by the purpose of the present invention, feature and effect.Obviously, described embodiment is this Shen
A part of the embodiment please, rather than whole embodiments, are based on embodiments herein, and those skilled in the art is not paying
Other embodiments obtained under the premise of creative work belong to the range of the application protection.In addition, be previously mentioned in text
All connection relationships not singly refer to that component directly connects, and referring to can be according to specific implementation situation, by adding or reducing connection
Auxiliary, Lai Zucheng more preferably connection structure.Each technical characteristic in the invention, under the premise of not conflicting conflict
It can be with combination of interactions.
Referring to Fig.1, this application discloses a kind of solar grid-connected off-network energy storage three-in-one integral machine of Line interaction, alternating currents
Grid interface, loading interfaces, photovoltaic plate interface, transformer module, reversible transducer, battery group interface, processor
Module, clock module, display module and the MPPT inverter configured with MPPT algorithm, the transformer module include input around
Group and output winding；The utility grid interface is connected by the input winding of transformer module with loading interfaces, the change
The output winding of depressor module is connected by reversible transducer with battery group interface, and the photovoltaic plate interface passes through
MPPT inverter is connected with the output winding of battery group interface and transformer module respectively, the processor module difference
It is connected with clock module, display module, MPPT inverter and reversible transducer.Wherein the processor module includes MCU
Controller and dsp controller handle solar energy using dsp controller since the data operation of dsp controller is powerful
The grid-connected function relative program algorithm of volt system, remaining programmed algorithm are then born by MCU controller, can be realized Same Efficieney
Energy in bidirectional flow, be provided simultaneously with grid-connected, off-network, the function of energy storage.
The technical program by reversible transducer, MPPT inverter and transformer module by solar energy photovoltaic system and
Three kinds of functions of net off-network energy storage are effectively bonded together, and are realized integrated function, are carried out pool control by processor module,
Substantially increase the intelligence degree of device.
Preferred embodiment is further used as, in the application specific embodiment, used in the transformer module
It is toroidal transformer module.The toroidal transformer module efficiency is high, and load capacity is strong, and off-network can be with perception, capacitive load.But
It is that magnetic loop is belonged to due to toroidal transformer module, so the time that magnetic circuit is established is very short, leads to alternating current switching current ratio
Operating current is several times greater, therefore first inversion is needed when the technical program starting, so that toroidal transformer module is formed magnetic circuit, then connect
Enter utility grid, to reduce the switching current of ring transformer module, reduces its volume.In addition the toroidal transformer module can
Multiple to be configured with, multiple toroidal transformer wired in parallel, the toroidal transformer module is typically provided with matched electricity
Sense, the secondary windings of toroidal transformer module are that mating, absorption high-order harmonic wave is designed according to the electric current at inversion direct current end, this
High-order harmonic wave is specifically the Sinusoidal Pulse Waves SPWM of 20KHZ, easily full because the magnetic circuit of toroidal transformer module is closed magnetic circuit
With, when especially alternating current is switched to inversion, if not filtering the Sinusoidal Pulse Waves SPWM carrier wave of 20KHZ, transformer module is just saturated,
Being equivalent to short circuit has led to fried power tube, and here it is the originals that toroidal transformer module in the prior art can not be applied to inverter
Cause.
Referring to Fig. 2, it is further used as preferred embodiment, in the application specific embodiment, embodiment 1, the application
It further include the first diverter branch and the second diverter branch, first diverter branch includes several dividing cells in parallel,
Each dividing cell includes that the first relay RY1 and the both ends thermistor R1, the thermistor R1 are connect respectively first
Relay RY1 output contact, second diverter branch include two or more second relay RY2 in parallel, and described second
The switching time of relay RY2 is less than 8ms, and the switching time of the first relay RY1 is greater than 8ms；Described first shunts branch
Road is connected with the second diverter branch, and the utility grid interface is connected with the first diverter branch, second diverter branch and change
The input winding of depressor module is connected, the processor module respectively with each first relay RY1 and the second relay RY2
It is connected.The application guarantees the switching time of photovoltaic generating system by multiple second relay RY2, utilizes within switching time
Reversible transducer compensates power supply to load, passes through dividing cell 110 composed by the first relay RY1 and thermistor R1
Bear heavy current impact to protect the second relay RY2, while ensure that photovoltaic generating system switching time and parallel connection
The safety of second relay RY2 realizes powerful photovoltaic generating system with this.
Referring to Fig. 3, embodiment 2 improves on the basis of embodiment 1, the second diverter branch described in embodiment 2
200 configured with multiple, and the input winding is configured with multiple taps, and each tap for inputting winding is respectively with each second
Second relay RY2 of diverter branch 200 is connected.
Specifically, when alternating current is unstable, photovoltaic system needs to carry out pressure stabilizing operation, this process gap first to alternating current
In the first relay RY1 of closed state, restart reversible transducer, using battery group by reversible transducer to load into
Row power supply is attracted the transformer module of pressure stabilizing is needed to input the second relay RY2 corresponding to tapping later, passes through change
The number of turns of the input winding of transformer module realizes alternating current voltage stabilizing function, then the first relay RY1 is enabled to be closed, and finally interrupts electric power storage
Pond group the pickup time that the time needed for whole process is the first relay RY1, passes through this technology hand to the inversion function of load
Section, similarly ensure that the second relay RY2 in parallel passes through is average current.
It is further used as preferred embodiment, the technical solution of embodiment 1 and embodiment 2 in the application, further includes more
The anode of a diode, multiple diodes is connected by a resistance with power end, the cathode point of each diode
It is not connected with each first relay RY1 and the second relay RY2.Each diode mainly starts interlocking effect, only
Have when the cathode potential of one of diode is dragged down by processor module, the first relay RY1 can realize closure behaviour
Make, processor module just no longer needs to be connected directly with each first relay RY1 at this time, and processor module can be by with second
Relay RY2 connected port indirectly controls the first relay RY1, and referring to Fig. 2, processor module is exported low by the port PASS
Second relay RY2 of the second diverter branch of control of Electric potentials 200 is closed, by the effect for the diode being connected with the port PASS,
The first relay RY1 of the first diverter branch 100 can be made to be closed.
It is further used as preferred embodiment, the technical solution of embodiment 1 and embodiment 2 in the application, described first
The specification of relay RY1 is switching voltage 12V, switching electric current 120A；The specification of the second relay RY2 is switching voltage
12V, switching electric current 40A.
The application also discloses a kind of control of solar grid-connected off-network energy storage three-in-one integral machine of Line interaction simultaneously
Method, comprising the following steps:
Step 100, according to user demand, the maximum power of user's evening time-division electricity consumption is calculated, be set the time-division in the user's evening
The electricity consumption time；
Step 200, according to the maximum power and electricity consumption time for calculating obtained user's evening electricity consumption, battery is configured
Group；
Step 300, the time-division on daytime passes through MPPT inverter using solar energy photovoltaic panel and transformer module is respectively electric power storage
Pond group charges and is load supplying, generates electricity by way of merging two or more grid systems simultaneously；
Step 400, according to load real time power requirements, battery group passes through reversible transducer and transformation the time-division in the evening
Device module is load supplying.
It is illustrated using resident's roof solar electricity generation system as example, user needs the electricity consumption according to itself evening first
Situation calculates the maximum power of user's evening time-division electricity consumption, and the electricity consumption time is arranged time-division in the user's evening；When later according to evening
The maximum power of point electricity consumption and electricity consumption time configure battery group, wait until the time-division on daytime, when sunlight abundance, first with too
The electric energy of the positive needs that can substitute the bad for the good for battery group, while being load supplying, and extra electric energy then generated electricity by way of merging two or more grid systems to utility grid, evening
When upper time-division electricity consumption, according to load electric power, it is powered by battery group, it is well known that solar power generation is used completely
It is most effective when falling, as long as and when the electric energy stored by battery group meets user demand at night, then user is complete
Without taking electricity to utility grid again, this is only real zero electricity charge.Since herein described all-in-one machine uses interconnection technology, at night
Battery group discharge when without be detached from power grid, and according to the power of load greatly carry out less control battery group electric discharge, design
When by peak load battery group is configured over one day, then deep discharge under battery group few cases, helps to reduce storage
Battery pack deep discharge and charge and discharge number, to increase the service life of battery group.
It is further used as preferred embodiment, in the application specific embodiment, step 300 specifically includes following step
It is rapid:
Step 310, intensity of illumination critical value is set；
Step 320, real-time lighting intensity is detected；
Step 330, when real-time lighting intensity is greater than intensity of illumination critical value, solar energy photovoltaic panel passes through MPPT inverter
It is respectively battery charging and for load supplying with transformer module, generates electricity by way of merging two or more grid systems simultaneously, when real-time lighting intensity is less than
When intensity of illumination critical value, solar energy photovoltaic panel by MPPT inverter and transformer module be respectively battery charging and
For load supplying, and it is load supplying that utility grid passes through transformer module simultaneously.
It is further used as preferred embodiment, in the application specific embodiment, in step 300, divides during the day, it can
Online setting operational mode, the operational mode includes grid-connected transmission mode；According to whether choosing grid-connected transmission mode, determine to work as
When real-time lighting intensity is greater than intensity of illumination critical value, the whether grid-connected power supply of solar energy photovoltaic panel.In the technical program, Yong Huke
According to self-demand, the operational mode of all-in-one machine is set, to adjust the collocation operation of each functional module in all-in-one machine.Institute simultaneously
Stating operational mode further includes peak load shifting mode, when all-in-one machine operates under peak load shifting mode, it can be achieved that utilizing city in paddy
Power grid charges to battery group, and the electric discharge power supply of battery group is controlled at peak, can solve summer due to electric system
Electricity shortage requires the technical issues of rationing the power supply of avoiding the peak hour.
Preferred embodiment is further used as, in the application specific embodiment, when detecting alternating current electricity in step 300
When net has a power failure, the power supply mode of load is switched to solar energy photovoltaic panel and the hybrid power supply of battery group.Thus ensure that
All-in-one machine has the function of uninterruptible power supply, guarantees that the smart machines such as computer do not crash, does not influence the normal operation of load, in this way
In the event of a loss of power, also solar power generation can be made full use of to supply electricity to load.
The better embodiment of the application is illustrated above, but the application is not limited to the specific embodiments,
Those skilled in the art can also make various equivalent modifications or replacement on the premise of without prejudice to spirit of the invention, this
Equivalent variation or replacement are all included in the scope defined by the claims of the present application a bit.
Claims (10)
1. the solar grid-connected off-network energy storage three-in-one integral machine of Line interaction, it is characterised in that: utility grid interface, load connect
Mouth, is shown photovoltaic plate interface, transformer module, reversible transducer, battery group interface, processor module, clock module
Show that module and the MPPT inverter configured with MPPT algorithm, the transformer module include input winding and output winding；
The utility grid interface is connected by the input winding of transformer module with loading interfaces, the output of the transformer module around
Group is connected by reversible transducer with battery group interface, the photovoltaic plate interface pass through MPPT inverter respectively with storage
The output winding of battery pack interface and transformer module is connected, the processor module respectively with clock module, display mould
Block, MPPT inverter and reversible transducer are connected.
2. the solar grid-connected off-network energy storage three-in-one integral machine of Line interaction according to claim 1, it is characterised in that:
It is toroidal transformer module used in the transformer module.
3. the solar grid-connected off-network energy storage three-in-one integral machine of Line interaction according to claim 1, it is characterised in that:
It further include the first diverter branch (100) and the second diverter branch (200), first diverter branch (100) includes several
Dividing cell (110) in parallel, each dividing cell (110) include the first relay RY1 and thermistor R1, the heat
The both ends quick resistance R1 are connect respectively in the first relay RY1 output contact, and second diverter branch (200) includes two or more
The switching time of second relay RY2, the second relay RY2 in parallel is less than 8ms, and the first relay RY1's cuts
The time is changed greater than 8ms；First diverter branch (100) is connected with the second diverter branch (200), the utility grid interface with
First diverter branch (100) is connected, and second diverter branch (200) is connected with the input winding of transformer module, the place
Reason device module is connected with each first relay RY1 and the second relay RY2 respectively.
4. the solar grid-connected off-network energy storage three-in-one integral machine of Line interaction according to claim 3, it is characterised in that:
For second diverter branch (200) configured with multiple, the input winding is configured with multiple taps, described to input each of winding
Tap is connected with the second relay RY2 of each second diverter branch (200) respectively.
5. the solar grid-connected off-network energy storage three-in-one integral machine of Line interaction according to claim 3 or 4, feature exist
In: it further include multiple diodes, the anode of multiple diodes is connected by a resistance with AC-DC power module, each
The cathode of the diode is connected with each first relay RY1 and the second relay RY2 respectively.
6. the solar grid-connected off-network energy storage three-in-one integral machine of Line interaction according to claim 3, it is characterised in that:
The specification of the first relay RY1 is switching voltage 12V, switching electric current 120A；The specification of the second relay RY2 is to cut
Change voltage 12V, switching electric current 40A.
7. a kind of control method of the solar grid-connected off-network energy storage three-in-one integral machine of Line interaction, which is characterized in that including
Following steps:
Step 100, according to user demand, the maximum power of user's evening time-division electricity consumption is calculated, use is set the time-division in the user's evening
The electric time；
Step 200, according to the maximum power and electricity consumption time for calculating obtained user's evening electricity consumption, battery group is configured；
Step 300, the time-division on daytime passes through MPPT inverter using solar energy photovoltaic panel and transformer module is respectively battery group
Charging and be load supplying, generate electricity by way of merging two or more grid systems simultaneously；
Step 400, according to load real time power requirements, battery group passes through reversible transducer and transformer mould the time-division in the evening
Block is load supplying.
8. the control method of the solar grid-connected off-network energy storage three-in-one integral machine of Line interaction according to claim 7,
It is characterized in that, step 300 specifically includes the following steps:
Step 310, intensity of illumination critical value is set；
Step 320, real-time lighting intensity is detected；
Step 330, when real-time lighting intensity is greater than intensity of illumination critical value, solar energy photovoltaic panel passes through MPPT inverter and change
Depressor module is respectively battery charging and is load supplying, is generated electricity by way of merging two or more grid systems simultaneously, when real-time lighting intensity is less than illumination
When critical strength, solar energy photovoltaic panel is respectively battery charging and is negative by MPPT inverter and transformer module
Power supply is carried, and it is load supplying that utility grid passes through transformer module simultaneously.
9. the control method of the solar grid-connected off-network energy storage three-in-one integral machine of Line interaction according to claim 7,
It is characterized in that, dividing during the day in step 300, operational mode can be set online, the operational mode includes grid-connected power transmission mould
Formula；According to whether choosing grid-connected transmission mode, determine when real-time lighting intensity is greater than intensity of illumination critical value, photovoltaic
The whether grid-connected power supply of plate.
10. the control method of the solar grid-connected off-network energy storage three-in-one integral machine of Line interaction according to claim 7,
It is characterized in that, the power supply mode of load is switched to solar energy photovoltaic panel when detecting that utility grid has a power failure in step 300
With battery group hybrid power supply.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811270444.1A CN109494860B (en) | 2018-10-29 | 2018-10-29 | Online interactive solar grid-connected and off-grid energy storage three-in-one all-in-one machine and control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811270444.1A CN109494860B (en) | 2018-10-29 | 2018-10-29 | Online interactive solar grid-connected and off-grid energy storage three-in-one all-in-one machine and control method |
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| CN109494860A true CN109494860A (en) | 2019-03-19 |
| CN109494860B CN109494860B (en) | 2021-09-28 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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