CN106972540A - Industrial and commercial enterprises' roof photovoltaic vanadium liquid battery energy storage micro-grid system and control method - Google Patents
Industrial and commercial enterprises' roof photovoltaic vanadium liquid battery energy storage micro-grid system and control method Download PDFInfo
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- CN106972540A CN106972540A CN201710346281.XA CN201710346281A CN106972540A CN 106972540 A CN106972540 A CN 106972540A CN 201710346281 A CN201710346281 A CN 201710346281A CN 106972540 A CN106972540 A CN 106972540A
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- 238000004146 energy storage Methods 0.000 title claims abstract description 77
- 229910052720 vanadium Inorganic materials 0.000 title claims abstract description 60
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 title claims abstract description 60
- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000007788 liquid Substances 0.000 title claims abstract description 22
- 238000001914 filtration Methods 0.000 claims abstract description 4
- 230000005611 electricity Effects 0.000 claims description 20
- 239000003792 electrolyte Substances 0.000 claims description 19
- 230000008569 process Effects 0.000 claims description 15
- 239000000523 sample Substances 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 2
- 238000010248 power generation Methods 0.000 description 7
- 230000008859 change Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000012010 growth Effects 0.000 description 1
- 230000007773 growth pattern Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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- H02J3/383—
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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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
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/10—Photovoltaic [PV]
-
- 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
-
- 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
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/20—Climate change mitigation technologies for sector-wide applications using renewable energy
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
Industry and commerce industry roof photovoltaic vanadium liquid battery energy storage micro-grid system and control method, including：Vanadium redox flow battery energy storage unit, current-variable controller, photovoltaic generation unit, inverter controller, mains-supplied unit, master controller and user load unit；The electric power output of master controller has two, it is vanadium redox flow battery energy storage unit charge circuit all the way, the master controller electric power output port is connected with current-variable controller, charged by the rectification of current-variable controller, filtering, Regulation Control Hou Gai road direct current powers to vanadium flow battery system, the charging power loop of vanadium redox flow battery energy storage system is made up of mains-supplied unit, vanadium redox flow battery energy storage unit, current-variable controller, master controller；Another road electric power output of master controller is industrial-frequency alternating current electric power, the circuit AC output end is connected with user load unit and mains-supplied unit is connected, and the road electric power constitutes energizing power loop by photovoltaic generation unit, inverter controller, master controller and user load unit；Wherein, in the loop as photovoltaic generation unit has unnecessary generation power, the excrescent electric power is by being fed to the utility grid of mains-supplied unit after main controller controls.
Description
Technical field
The present invention relates to photovoltaic microgrid system, and in particular to industry and commerce industry roof photovoltaic vanadium liquid battery energy storage micro-capacitance sensor system
System and control method.
Background technology
Distributed photovoltaic power generation is refered in particular to use photovoltaic module, and solar energy is converted directly into the distributed power generation system of electric energy
System.It is a kind of new, tool generating with broad prospects for development and comprehensive utilization of energy mode, and it is advocated generates electricity nearby, just
It is near grid-connected, change nearby, the principle used nearby can not only effectively improve the generated energy of same size photovoltaic plant, simultaneously
Also efficiently solve the problems, such as loss of the electric power in boosting and long-distance transport.
The distributed photovoltaic power generation of China comes into the popularization stage, and distributed photovoltaic hair occurs in succession in whole nation each province at present
Electric preferential policy, from the point of view of business, large enterprise's factory building, the super chain, private enterprise of business all advantageous Roof Resources.This
Class enterprise is mostly the rich and influential family of electricity consumption, if it will be a potential great wealth that the energy on roof is carried out into reasonable utilization.And
This kind of enterprise's House Property is long, can typically reach the right to use of more than 20 years, is more suitable for more than exploitation megawatt large-scale roof electricity
Stand, not only solve electrical problem for enterprise, be also the tremendous contribution to social economy's environmental benefit.Distributed photovoltaic power generation meeting
It is promoted and applies rapidly.But with the rapid growth of distributed photovoltaic system, distributed photovoltaic power generation highlight it is following urgently
Problem to be solved：
1st, influence is produced on Electric Power Network Planning.Distributed photovoltaic it is grid-connected, increase the load prediction difficulty of its region, change
Existing load growth pattern.The access of substantial amounts of distributed photovoltaic power, making the transformation and management of power distribution network becomes more
It is complicated.
2nd, influence is produced on the quality of power supply.The material impact of distributed photovoltaic access is to cause the voltage's distribiuting on feeder line to change
Become, its size influenceed and access capacity, on-position are closely related.Photovoltaic generation is general to access power network by inverter, this
Frequently turning on and off for class power electronic devices, easily produces harmonic pollution in electric power net.
3rd, traditional distributed photovoltaic micro-grid system, energy-storage battery capacity is very small, and energy-storage battery short life, operation
Cost is high, it is impossible to large area volume popularization and application, constrains the application and development of photovoltaic micro, energy storage bottleneck is intelligent micro-grid
Maximum the problem of, be also energy storage micro-capacitance sensor urgent problem to be solved.
The content of the invention
The invention aims to solve photovoltaic system inefficiency present in above-mentioned prior art, electric network pollution is tight
Weight and improvement industry and commerce roof power supply quality, and energy-storage battery capacity are small, and short life is dangerous, the problems such as operation cost is high, purport
One kind is being provided from energy storage, high efficiency, high safety, operation cost is low, intelligent control, the industry and commerce roof distribution for powering off preemergency
Photovoltaic intelligent micro-capacitance sensor energy supply system.
In order to realize foregoing invention purpose, the present invention proposes industry and commerce industry roof photovoltaic vanadium liquid battery energy storage micro-capacitance sensor system
System and control method, including：Vanadium redox flow battery energy storage unit, current-variable controller, photovoltaic generation unit, inverter controller, civil power
Power supply unit, master controller and user load unit；Photovoltaic generation unit output direct current power is connected with inverter controller, through inverse
Industrial-frequency alternating current is exported after becoming device commutation inversion, the industrial-frequency alternating current is delivered to the alternating electromotive force of master controller by generating ammeter
Input port is combined with family with load unit, constitutes photovoltaic energy supply loop；The electric power output of master controller has two, is vanadium liquid all the way
Galvanic battery energy-storage units charge circuit, the master controller electric power output port is connected with current-variable controller, passes through current-variable controller
Rectification, filtering, Regulation Control Hou Gai road direct current powers to vanadium flow battery system charge, by mains-supplied unit, vanadium liquid stream
Battery energy storage unit, current-variable controller, master controller constitute the charging power loop of vanadium redox flow battery energy storage system；
Wherein, the discharge loop of vanadium redox flow battery energy storage unit is DC output end and the inversion of vanadium flow battery current-variable controller
The direct-flow input end of controller is connected, and exports industrial-frequency alternating current after inverter commutation inversion, the industrial-frequency alternating current is directly conveyed
To the ac input end mouthful of master controller, be connected by master controller with user load unit, by vanadium redox flow battery energy storage unit,
Current-variable controller, inverter controller, master controller and user load unit constitute the energizing power of vanadium redox flow battery energy storage system
Loop.
Another road electric power output of master controller is industrial-frequency alternating current electric power, the circuit AC output end and user load list
Member is connected and mains-supplied unit is connected, and the road electric power is by photovoltaic generation unit, inverter controller, master controller and user load
Unit constitutes energizing power loop；Wherein, in the loop as photovoltaic generation unit has unnecessary generation power, the excrescent electric power is led to
Cross after main controller controls and be fed to the utility grid of mains-supplied unit.
The power input end of master controller is connected with civil power power input end, and the road electric power is by mains-supplied unit, master
Controller, user load unit constitute mains-supplied power circuit.
Described vanadium redox flow battery energy storage unit, it is characterised in that energy-storage units include both positive and negative polarity electrolyte reservoir, pile,
Radiator, electrolyte circulating pump and current-variable controller, both positive and negative polarity electrolyte have temperature sensor, temperature sensor and unsteady flow control
Device processed is connected, and temperature information feeds back to master controller by current-variable controller, and master controller controls to radiate according to electrolyte temperature
The unlatching and stoppage in transit of device, to improve energy-storage units efficiency；Circulating pump has speed probe, speed probe and current-variable controller phase
Even, the rotary speed information of circulating pump is fed back to master controller by current-variable controller, and master controller is according to the electricity consumption of user load unit
Load adjusts electrolyte circulating pump rotating speed, controls flow of electrolyte, to improve energy-storage units efficiency.
The control method of industrial and commercial enterprises' roof photovoltaic vanadium liquid battery energy storage micro-grid system mainly has following control process：
A, photovoltaic generation power supply process：When daytime, photovoltaic generation unit generated electricity, master controller detects user load cell side first
Supply voltage, if load side voltage be less than master controller setting value, master controller connect inverter controller, by photovoltaic generation
Unit, inverter controller, master controller are powered to user load unit, the electric power network of feeding after unnecessary electricity inversion.
B, vanadium redox flow battery energy storage unit fill, power supply process：Night civil power electric power is in paddy electricity period, main controller controls
Current-variable controller is connected, is charged from civil power electric power to vanadium redox flow battery energy storage unit；The peak electric period on daytime, master controller detection is used
The supply voltage of family load unit side, and inverter controller output voltage is adaptively adjusted, user's load unit is preferentially used
Photovoltaic generation unit and energy-storage units electric power.
C, mains-supplied process：Mains-supplied process is full-time power supply, master controller connection civil power power circuit, master control
Device processed surveys the supply voltage of user load cell side, and master controller adjusts the output electricity of inverter controller according to load side voltage
Pressure, realizes the priority level electricity consumption of photovoltaic power supply, energy storage for power supply and mains-supplied, its limited order is preferentially to use energy-storage units
With photovoltaic generation electric power, secondary uses civil power electric power.
Beneficial effects of the present invention：
1st, it efficiently solves existing distributed photovoltaic power generation and dissolved difficulty, abandons optical phenomenon problem, realizes solar power system
High efficiency；
2nd, using vanadium redox flow battery energy storage system, the possibility of Large Copacity energy storage and big multiplying power discharging is realized, intelligent micro-grid is met
It is required that, it is that intelligent micro-grid application is taken a firm foundation, reduces energy-storage battery cost in micro-grid system；
3rd, reduce distributed photovoltaic power generation and influence is produced on the power network quality of power supply.Large-capacity vanadium battery energy-storage system is just as one
Cistern is the same, and the effect of peak clipping Pinggu is played to power network, and positive role is played in the normal operation to power network.
4th, vanadium cell energy storage micro-grid system, under outer net power-off condition, can play preemergency effect, this is also to solve electricity
The unstable pith often having a power failure of net, while also greatly improving the application efficiency of photovoltaic generating system.
Brief description of the drawings
Fig. 1 is photovoltaic vanadium liquid battery energy storage micro-grid system in industry and commerce roof of the present invention and control method structural representation；
Fig. 2 is photovoltaic vanadium liquid battery energy storage micro-grid system in industry and commerce roof of the present invention and control method vanadium redox flow battery energy storage list
Meta structure schematic diagram；
1st, vanadium redox flow battery energy storage unit, 11, vanadium cell pile, 12, electrolyte circulating pump, 13, circulating pump speed probe,
14, heat exchanger, 15, electrolyte temperature sensor, 16, electrolyte reservoir, 2, current-variable controller, 3, photovoltaic generation unit, 4, inverse
Become controller, 5, mains-supplied unit, 6, master controller, 7, user load unit, 8, generating ammeter.
Embodiment
It is further explanation of the present invention with reference to Fig. 1, Fig. 2 and the following example, the present invention is not constituted and appointed
What is limited.
Refering to Fig. 1, industrial and commercial enterprises' roof photovoltaic vanadium liquid battery energy storage micro-grid system and control method, including：Vanadium liquid stream
Battery energy storage unit 1, current-variable controller 2, photovoltaic generation unit 3, inverter controller 4, mains-supplied unit 5, master controller 6 and
User load unit 7；The output direct current power of photovoltaic generation unit 3 is connected with inverter controller 4, defeated after inverter commutation inversion
Go out industrial-frequency alternating current, the industrial-frequency alternating current is delivered to the alternating electromotive force input port of master controller 6 by generating ammeter 8 and family is used
Load unit 7 is combined, and constitutes photovoltaic energy supply loop；
The electric power output of master controller 6 has two, is the charge circuit of vanadium redox flow battery energy storage unit 1, the master controller electric power 6 all the way
Output port is connected with current-variable controller 2, by the rectification of current-variable controller 2, filtering, Regulation Control Hou Gai road direct current powers to
Vanadium flow battery system charges, by mains-supplied unit 7, vanadium redox flow battery energy storage unit 1, current-variable controller 2, master controller 6
Constitute the charging power loop of vanadium redox flow battery energy storage system；
Wherein, the discharge loop of vanadium redox flow battery energy storage unit 1 be vanadium flow battery current-variable controller 2 DC output end with it is inverse
The direct-flow input end for becoming controller 4 is connected, and exports industrial-frequency alternating current after inverter commutation inversion, the industrial-frequency alternating current is directly defeated
The ac input end mouthful of master controller 6 is delivered to, is connected by master controller 6 with user load unit 7, by vanadium redox flow battery energy storage
Unit 1, current-variable controller 2, inverter controller 4, master controller 6 and user load unit 7 constitute vanadium redox flow battery energy storage system
Energizing power loop.
Another road electric power output of master controller 6 is industrial-frequency alternating current electric power, the circuit AC output end and user load
Unit is connected and mains-supplied unit is connected, and the road electric power is by photovoltaic generation unit 3, inverter controller 4, master controller 6 and uses
Family load unit 7 constitutes energizing power loop；Wherein, such as photovoltaic generation unit 3 has unnecessary generation power in the loop, and this is more
Remaining electric power is fed to the utility grid of mains-supplied unit after being controlled by master controller 6.
The power input end of master controller 6 is connected with civil power power input end, the road electric power by mains-supplied unit 5,
Master controller 6, user load unit 7 constitute mains-supplied power circuit.
Refering to Fig. 2, vanadium redox flow battery energy storage unit, including both positive and negative polarity electrolyte reservoir 16, pile 11, radiator 14, electricity
Liquid circulating pump 12 and current-variable controller 2 are solved, both positive and negative polarity electrolyte has temperature sensor 15, temperature sensor 15 and Variable flow control
Device 2 is connected, and temperature information feeds back to master controller 6 by current-variable controller 2, and master controller 6 controls to dissipate according to electrolyte temperature
The unlatching and stoppage in transit of hot device 14, to improve energy-storage units efficiency；Electrolyte circulating pump 12 has speed probe 13, speed probe
13 are connected with current-variable controller 2, and the rotary speed information of circulating pump is fed back to master controller 6, master controller 6 by current-variable controller 2
The rotating speed of electrolyte section circulating pump 12 is adjusted according to the power load of user load unit 7, to improve energy-storage units efficiency.
The control method of industrial and commercial enterprises' roof photovoltaic vanadium liquid battery energy storage micro-grid system mainly has following control process：
A, photovoltaic generation power supply process：When daytime, photovoltaic generation unit generated electricity, master controller 6 detects user load unit 7 first
The supply voltage of side, if load side voltage is less than the setting value of master controller 6, master controller connects inverter controller 4, by photovoltaic
Generator unit, inverter controller, master controller are powered to user load unit, the electric power network of feeding after unnecessary electricity inversion.
B, vanadium redox flow battery energy storage unit fill, power supply process：Night civil power electric power is in the paddy electricity period, and master controller 6 is controlled
System connection current-variable controller 2, is charged from civil power electric power to vanadium redox flow battery energy storage unit 1；Peak electric period on daytime, master controller 6
The supply voltage of user load cell side is detected, and adaptively adjusts the output voltage of inverter controller 4, makes user's load unit excellent
First use photovoltaic generation unit and energy-storage units electric power.
C, mains-supplied process：Mains-supplied process is full-time power supply, and the connection civil power power circuit of master controller 6 is main
Controller 6 surveys the supply voltage of the side of user load unit 7, and master controller adjusts the defeated of inverter controller according to load side voltage
Go out voltage, realize the priority level electricity consumption of photovoltaic power supply, energy storage for power supply and mains-supplied, its limited order is preferentially to use energy storage
Unit and photovoltaic generation electric power, secondary use civil power electric power.
Although being disclosed by above example to the present invention, protection scope of the present invention is not limited thereto,
Under conditions of without departing from present inventive concept, deformation, replacement that each component is done to more than etc. will fall into the right of the present invention
In claimed range.
Claims (4)
1. industry and commerce industry roof photovoltaic vanadium liquid battery energy storage micro-grid system and control method, including：Vanadium redox flow battery energy storage list
Member, current-variable controller, photovoltaic generation unit, inverter controller, mains-supplied unit, master controller and user load unit；Light
Volt generator unit output direct current power is connected with inverter controller, exports industrial-frequency alternating current after inverter commutation inversion, the work
The alternating electromotive force input port that frequency alternating current is delivered to master controller by generating ammeter is combined with family with load unit, constitutes light
Volt energy supply loop；
The electric power output of master controller has two, is vanadium redox flow battery energy storage unit charge circuit all the way, and the master controller electric power is defeated
Exit port is connected with current-variable controller, by the rectification of current-variable controller, filtering, Regulation Control Hou Gai road direct current powers to vanadium liquid
Galvanic battery system is charged, and vanadium liquid is constituted by mains-supplied unit, vanadium redox flow battery energy storage unit, current-variable controller, master controller
The charging power loop of galvanic battery energy-storage system；
Another road electric power output of master controller is industrial-frequency alternating current electric power, the circuit AC output end and user load unit phase
Connect and mains-supplied unit is connected, the road electric power is by photovoltaic generation unit, inverter controller, master controller and user load unit
Constitute energizing power loop；Wherein, in the loop as photovoltaic generation unit has unnecessary generation power, the excrescent electric power passes through master
The utility grid of mains-supplied unit is fed to after controller control.
2. photovoltaic vanadium liquid battery energy storage micro-grid system in industry and commerce roof according to claim 1, it is characterised in that vanadium liquid
The discharge loop of galvanic battery energy-storage units is the DC output end of vanadium flow battery current-variable controller and the direct current of inverter controller
Input is connected, and exports industrial-frequency alternating current after inverter commutation inversion, the industrial-frequency alternating current is fed directly to master controller
Ac input end mouthful, is connected by master controller with user load unit, by vanadium redox flow battery energy storage unit, current-variable controller,
Inverter controller, master controller and user load unit constitute the energizing power loop of vanadium redox flow battery energy storage system.
3. photovoltaic vanadium liquid battery energy storage micro-grid system in industry and commerce roof according to claim 1 or 2, it is characterised in that its
It is characterised by that energy-storage units include both positive and negative polarity electrolyte reservoir, pile, radiator, electrolyte circulating pump and current-variable controller, just
Electrolyte liquid has temperature sensor, and temperature sensor is connected with current-variable controller, and temperature information is anti-by current-variable controller
Master controller is fed to, master controller controls the unlatching and stoppage in transit of radiator according to electrolyte temperature, to improve energy-storage units efficiency；
Circulating pump has speed probe, and speed probe is connected with current-variable controller, and current-variable controller is anti-the rotary speed information of circulating pump
Master controller is fed to, master controller adjusts electrolyte circulating pump rotating speed, control electricity according to the power load of user load unit
Flow quantity is solved, to improve energy-storage units efficiency.
4. the control method of industry and commerce industry roof photovoltaic vanadium liquid battery energy storage micro-grid system mainly has following control process：
A, photovoltaic generation power supply process：When daytime, photovoltaic generation unit generated electricity, master controller detects user load cell side first
Supply voltage, if load side voltage be less than master controller setting value, master controller connect inverter controller, by photovoltaic generation
Unit, inverter controller, master controller are powered to user load unit, the electric power network of feeding after unnecessary electricity inversion.
B, vanadium redox flow battery energy storage unit fill, power supply process：Night civil power electric power is in paddy electricity period, main controller controls connection
Current-variable controller, is charged from civil power electric power to vanadium redox flow battery energy storage unit；The peak electric period on daytime, master controller detection user bears
The supply voltage of carrier unit side, and inverter controller output voltage is adaptively adjusted, user's load unit is preferentially used photovoltaic
Generator unit and energy-storage units electric power.
C, mains-supplied process：Mains-supplied process is full-time power supply, master controller connection civil power power circuit, master controller
The supply voltage of user load cell side is surveyed, master controller adjusts the output voltage of inverter controller according to load side voltage,
Realize the priority level electricity consumption of photovoltaic power supply, energy storage for power supply and mains-supplied, its limited order be it is preferential using energy-storage units and
Photovoltaic generation electric power, secondary uses civil power electric power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710346281.XA CN106972540A (en) | 2017-05-17 | 2017-05-17 | Industrial and commercial enterprises' roof photovoltaic vanadium liquid battery energy storage micro-grid system and control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710346281.XA CN106972540A (en) | 2017-05-17 | 2017-05-17 | Industrial and commercial enterprises' roof photovoltaic vanadium liquid battery energy storage micro-grid system and control method |
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| Publication Number | Publication Date |
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| CN106972540A true CN106972540A (en) | 2017-07-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113708425A (en) * | 2021-08-24 | 2021-11-26 | 深圳供电局有限公司 | Direct current micro-grid system and intelligent direct current cabinet thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113708425A (en) * | 2021-08-24 | 2021-11-26 | 深圳供电局有限公司 | Direct current micro-grid system and intelligent direct current cabinet thereof |
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