CN207166154U - Industrial and commercial enterprises' roof photovoltaic vanadium liquid battery energy storage micro-grid system - Google Patents
Industrial and commercial enterprises' roof photovoltaic vanadium liquid battery energy storage micro-grid system Download PDFInfo
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- CN207166154U CN207166154U CN201720544684.0U CN201720544684U CN207166154U CN 207166154 U CN207166154 U CN 207166154U CN 201720544684 U CN201720544684 U CN 201720544684U CN 207166154 U CN207166154 U CN 207166154U
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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]
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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
- 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
Abstract
Industrial and commercial enterprises' roof photovoltaic vanadium liquid battery energy storage micro-grid system, 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；Photovoltaic generation unit output direct current power is connected with inverter controller, industrial-frequency alternating current is exported after inverter commutation inversion, the alternating electromotive force input port that the industrial-frequency alternating current is delivered to master controller by generating ammeter is combined with family with load unit, forms photovoltaic energy supply loop；The another way 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 forms 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
It the utility model is related to photovoltaic microgrid system, and in particular to the micro- electricity of industrial and commercial enterprises' roof photovoltaic vanadium liquid battery energy storage
Net system.
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, the generated energy of same size photovoltaic plant can not only be effectively improved, 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 current national each province
Electric preferential policy, from the point of view of business, all advantageous Roof Resources of large enterprise's factory building, the super chain, private enterprise of business.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
It this kind of enterprise's House Property length, can typically reach the right to use of more than 20 years, be more suitable for more than exploitation megawatt large-scale roof electricity
Stand, not only solve electrical problem, and the tremendous contribution to social economy's environmental benefit for enterprise.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, Electric Power Network Planning is had an impact.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, the transformation and management for making power distribution network become
It is increasingly complex.
2nd, the quality of power supply is had an impact.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 typically accesses 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, can not large area volume popularization and application, constrain the application and development of photovoltaic micro, energy storage bottleneck is intelligent micro-grid
The problem of maximum, and energy storage micro-capacitance sensor urgent problem to be solved.
The content of the invention
The purpose of this utility model is for low, the power grid pollution that solves photovoltaic system efficiency present in above-mentioned prior art
Dye is serious and improves industry and commerce roof power supply quality, and energy-storage battery capacity is small, and short life is dangerous, and operation cost height etc. is asked
Topic, it is desirable to provide a kind of from energy storage, high efficiency, high safety, operation cost is low, intelligent control, the industry and commerce roof for powering off preemergency
Photovoltaic intelligent micro-capacitance sensor energy supply system.
In order to realize foregoing invention purpose, the utility model proposes the micro- electricity of industrial and commercial enterprises' roof photovoltaic vanadium liquid battery energy storage
Net system, including：Vanadium redox flow battery energy storage unit, current-variable controller, photovoltaic generation unit, inverter controller, mains-supplied list
Member, master controller and user load unit；Photovoltaic generation unit output direct current power is connected with inverter controller, whole through inverter
Industrial-frequency alternating current is exported after stream inversion, the industrial-frequency alternating current is delivered to the alternating electromotive force input of master controller by generating ammeter
Mouth is combined with family with load unit, forms photovoltaic energy supply loop；The electric power output of master controller has two, is vanadium flow battery all the way
Energy-storage units charge circuit, the master controller electric power output port are connected with current-variable controller, by the rectification of current-variable controller,
Filtering, Regulation Control Hou Gai road direct current powers charge to vanadium flow battery system, by mains-supplied unit, vanadium redox flow battery energy storage
Unit, current-variable controller, master controller form the charging power loop of vanadium redox flow battery energy storage system；
Wherein, the discharge loop of vanadium redox flow battery energy storage unit be vanadium flow battery current-variable controller DC output end with
The direct-flow input end of inverter controller is connected, and industrial-frequency alternating current is exported after inverter commutation inversion, and the industrial-frequency alternating current is direct
The ac input end mouth of master controller is delivered to, 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 form the power supply of vanadium redox flow battery energy storage system
Power circuit.
The another way 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 forms 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 form 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 according to electrolyte temperature to radiate
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 list first
The supply voltage of first side, if load side voltage is less than master controller setting value, master controller connects inverter controller, 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 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；Peak electricity period on daytime, master controller detection are 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, and master controller connects civil power power circuit, master control
Device processed surveys the supply voltage of user load cell side, and master controller adjusts the output of inverter controller electricity 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.
The beneficial effects of the utility model：
1st, it efficiently solves existing distributed photovoltaic power generation consumption hardly possible, abandons optical phenomenon problem, realizes solar power generation system
The high efficiency of system；
2nd, using vanadium redox flow battery energy storage system, the possibility of Large Copacity energy storage and big multiplying power discharging is realized, meets that intelligence is micro-
Grid requirements, taken a firm foundation for intelligent micro-grid application, reduce energy-storage battery cost in micro-grid system；
3rd, reduce distributed photovoltaic power generation to have an impact the power network quality of power supply.Large-capacity vanadium battery energy-storage system just as
One cistern is the same, and the effect of peak clipping Pinggu is played to power network, positive role is played to the normal operation of power network.
4th, vanadium cell energy storage micro-grid system, under outer net power-off condition, preemergency effect can be played, this is also to solve electricity
The unstable pith often having a power failure is netted, while also greatly improves the application efficiency of photovoltaic generating system.
Brief description of the drawings
Fig. 1 is the utility model industry and commerce roof photovoltaic vanadium liquid battery energy storage micro-grid system structural representation；
Fig. 2 is the utility model industry and commerce roof photovoltaic vanadium liquid battery energy storage micro-grid system vanadium redox flow battery energy storage unit
Structural representation；
1st, vanadium redox flow battery energy storage unit, 11, vanadium cell pile, 12, electrolyte circulating pump, 13, circulating pump revolution speed sensing
Device, 14, heat exchanger, 15, electrolyte temperature sensor, 16, electrolyte reservoir, 2, current-variable controller, 3, photovoltaic generation unit, 4,
Inverter controller, 5, mains-supplied unit, 6, master controller, 7, user load unit, 8, generating ammeter.
Embodiment
With reference to Fig. 1, Fig. 2 and the following example it is explained further and illustrates to of the present utility model, to the utility model
It is not limited in any way.
Refering to Fig. 1, industrial and commercial enterprises' roof photovoltaic vanadium liquid battery energy storage micro-grid system, including：Vanadium redox flow battery energy storage list
Member 1, current-variable controller 2, photovoltaic generation unit 3, inverter controller 4, mains-supplied unit 5, master controller 6 and user load list
Member 7；Photovoltaic generation unit 3 exports direct current power and is connected with inverter controller 4, and industrial frequency AC is exported after inverter commutation inversion
Electricity, the industrial-frequency alternating current are delivered to the alternating electromotive force input port and family load unit 7 of master controller 6 by generating ammeter 8
With reference to composition 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 all the way, the master controller
The output port of electric power 6 is connected with current-variable controller 2, passes through the rectification of current-variable controller 2, filtering, Regulation Control Hou Gai roads direct current
Electric power charges to vanadium flow battery system, by mains-supplied unit 7, vanadium redox flow battery energy storage unit 1, current-variable controller 2, master control
Device 6 processed forms 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 is the DC output end of vanadium flow battery current-variable controller 2
It is connected with the direct-flow input end of inverter controller 4, industrial-frequency alternating current is exported after inverter commutation inversion, the industrial-frequency alternating current is straight
The ac input end mouth for being delivered to master controller 6 is connect, is connected by master controller 6 with user load unit 7, by vanadium flow battery
Energy-storage units 1, current-variable controller 2, inverter controller 4, master controller 6 and user load unit 7 form vanadium redox flow battery energy storage
The energizing power loop of system.
The another way 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 forms 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 form 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
Solution liquid circulating pump 12 and current-variable controller 2, both positive and negative polarity electrolyte have 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 according to electrolyte temperature to be dissipated
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 list first
The supply voltage of first 7 sides, if load side voltage is less than the setting value of master controller 6, master controller connects inverter controller 4, by
Photovoltaic generation unit, inverter controller, master controller are powered to user load unit, the electric power electricity of feeding after unnecessary electricity inversion
Net.
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 electricity 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 master controller 6 connects civil power power circuit, 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 utility model, the scope of protection of the utility model not office
It is limited to this, under conditions of conceiving without departing from the utility model, each component is done to more than deformation, replacements etc. will be fallen into
In the right of utility model.
Claims (3)
1. industrial and commercial enterprises' roof photovoltaic vanadium liquid battery energy storage micro-grid system, including：Vanadium redox flow battery energy storage unit, Variable flow control
Device, photovoltaic generation unit, inverter controller, mains-supplied unit, master controller and user load unit；Photovoltaic generation unit is defeated
Go out direct current power with inverter controller to be connected, industrial-frequency alternating current is exported after inverter commutation inversion, the industrial-frequency alternating current passes through
The alternating electromotive force input port that generating ammeter is delivered to master controller is combined with family with load unit, forms photovoltaic 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 formed 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；
The another way electric power output of master controller is industrial-frequency alternating current electric power, the circuit AC output end and user load unit phase
Even and mains-supplied unit is connected, and the road electric power is by photovoltaic generation unit, inverter controller, master controller and user load unit
Form 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 industrial and commercial enterprises roof according to claim 1, it is characterised in that vanadium
The discharge loop of flow battery energy storage unit be vanadium flow battery current-variable controller DC output end and inverter controller it is straight
Stream 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 mouth, be connected by master controller with user load unit, by vanadium redox flow battery energy storage unit, Variable flow control
Device, inverter controller, master controller and user load unit form the energizing power loop of vanadium redox flow battery energy storage system.
3. photovoltaic vanadium liquid battery energy storage micro-grid system in industrial and commercial enterprises roof according to claim 1 or 2, it is characterised in that
It is characterized 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 has temperature sensor, and temperature sensor is connected with current-variable controller, and temperature information passes through current-variable controller
Master controller is fed back to, master controller controls the unlatching and stoppage in transit of radiator according to electrolyte temperature, to improve energy-storage units effect
Rate；Circulating pump has speed probe, and speed probe is connected with current-variable controller, rotary speed information of the current-variable controller circulating pump
Master controller is fed back to, master controller adjusts electrolyte circulating pump rotating speed according to the power load of user load unit, control
Flow of electrolyte, to improve energy-storage units efficiency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720544684.0U CN207166154U (en) | 2017-05-17 | 2017-05-17 | Industrial and commercial enterprises' roof photovoltaic vanadium liquid battery energy storage micro-grid system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720544684.0U CN207166154U (en) | 2017-05-17 | 2017-05-17 | Industrial and commercial enterprises' roof photovoltaic vanadium liquid battery energy storage micro-grid system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207166154U true CN207166154U (en) | 2018-03-30 |
Family
ID=61709047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720544684.0U Expired - Fee Related CN207166154U (en) | 2017-05-17 | 2017-05-17 | Industrial and commercial enterprises' roof photovoltaic vanadium liquid battery energy storage micro-grid system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207166154U (en) |
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2017
- 2017-05-17 CN CN201720544684.0U patent/CN207166154U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180330 Termination date: 20210517 |