CN206332459U - Distribution type photovoltaic energy storage system with super capacitor - Google Patents
Distribution type photovoltaic energy storage system with super capacitor Download PDFInfo
- Publication number
- CN206332459U CN206332459U CN201621004553.5U CN201621004553U CN206332459U CN 206332459 U CN206332459 U CN 206332459U CN 201621004553 U CN201621004553 U CN 201621004553U CN 206332459 U CN206332459 U CN 206332459U
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- China
- Prior art keywords
- switch
- super capacitor
- energy
- storage system
- energy storage
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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
-
- 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
Abstract
The utility model is related to a kind of distribution type photovoltaic energy storage system with super capacitor, including solar panel, the solar panel is connected with first switch, and by the first switch provided with two output channels, first path of the solar panel is directly connected to photovoltaic DC-to-AC converter, the alternate path of the solar panel connects the photovoltaic DC-to-AC converter by the super capacitor and energy-storage module set gradually, the photovoltaic DC-to-AC converter accesses power network, the distribution type photovoltaic energy storage system with super capacitor is additionally provided with relay, protection device and the control system for switch operating state.The utility model is simple in construction, safety and stability, the optical energy utilization efficiency of photovoltaic energy storage system can not only be significantly improved, additionally it is possible to the effects such as short-duration power, buffering load fluctuation, balanced power supply output, improvement quality of power supply are played, compared to the photovoltaic energy storage system more efficient energy-saving of conventional art.
Description
Technical field
The utility model is related to a kind of distribution type photovoltaic energy storage system with super capacitor.
Background technology
At present, in the more remote mountain area of China and most of rural area, the cost erected power transmission lines is higher, and
Even if having set up transmission line of electricity, operating cost and electric network reliability are often not fully up to expectations, unavoidable to occur having a power failure in short-term, but carry
The cost that high reliability needs is too high.If building distribution type photovoltaic energy storage system using solar power generation, solar energy is passed through
Ultracapacitor is converted into electric energy deposit energy-storage battery, and it is very economical that electric energy is fed into power network again when needed, and not
Any destruction can be produced to environment；And distribution type photovoltaic energy storage system is set up in load concentrated area, in electric power regular supply
When electric power is stored by ultracapacitor and energy-storage system, and returned when power failure or supply of electric power are not enough by energy-storage system
Feed power network, it is ensured that power network balanced power supply；Meanwhile, distribution type photovoltaic energy storage system can also improve the quality of power supply, and substitution is current
The UPS used, improves the power supply reliability of important load equipment such as communication equipment, computer and Medical Devices etc..But it is existing
Distribution type photovoltaic energy storage system, the generated output of its solar panel is relevant with sunlight intensity, and with the change for energy storage
The power for learning battery needs is unrelated, so that energy dissipation when causing irradiation level too high, can not be to chemical cell when irradiation level is too low
The phenomenon charged, and existing photovoltaic system influenceed by environment and power load, and voltage pulsation is very big, it is impossible to stable work
Make.
Utility model content
In order to overcome the drawbacks described above under prior art, the purpose of this utility model is to provide a kind of with super capacitor
Distribution type photovoltaic energy storage system, the defect of the photovoltaic energy storage system under prior art is solved by rational structure design, can
To store electric energy and to grid transmission when irradiation level is high, electric energy is collected when irradiation level is low, when electricity collection to a certain extent when
Charged to energy-storage module, the efficiency of light energy utilization is higher, more safety and stability.
The technical solution of the utility model is：A kind of distribution type photovoltaic energy storage system with super capacitor, including solar energy
Cell panel, the solar panel is connected with first switch, and the first switch is respectively at the first path and alternate path phase
Connection, first path is directly connected to photovoltaic DC-to-AC converter, and the alternate path passes through the super capacitor set gradually and energy storage
Module connects the photovoltaic DC-to-AC converter, and second switch, the energy storage mould are provided between the super capacitor and the energy-storage module
Provided with the 3rd switch between block and the photovoltaic DC-to-AC converter, the photovoltaic DC-to-AC converter accesses power network.
It is preferred that, the distribution type photovoltaic energy storage system with super capacitor is additionally provided with the control for switch operating state
System, the control system is including being used to test the first switch controller of solar panel side voltage x current, being used for
Test the second switch controller of super capacitor side voltage x current and for testing chemical cell side voltage x current
3rd switch controller.
It is preferred that, the first switch controller connects the first switch, and the second switch controller connection is described
Second switch, the 3rd switch controller connection the 3rd switch, each switch controller can control to open inductive switch
Close.
It is preferred that, the first switch controller, second switch controller and the 3rd switch controller pass through 485 bus phases
Connect.
It is preferred that, the energy-storage module includes the storage battery charge controller and energy-storage units being connected with each other, the electric power storage
Pond charge controller connects the second switch, energy-storage units connection the 3rd switch.
It is preferred that, the energy-storage units include some chemical cells, and different chemical cells are serially connected and/or in parallel.
It is preferred that, the chemical cell is lead-acid battery.
It is preferred that, the solar panel is provided with temperature sensor, temperature sensor connection the 3rd switch
Controller.
It is preferred that, the distribution type photovoltaic energy storage system with super capacitor is additionally provided with relay and protection device.
It is preferred that, the control system is provided with human-computer interaction interface.
The beneficial effects of the utility model are：
The utility model is by setting energy-storage module and corresponding controllers so that energy-storage module can power load it is smaller and
The electricity price relatively low period stores the unnecessary electricity that photovoltaic plant is sent, and power load is larger and the electricity price higher period releases
Electric discharge energy, can not only buffer load fluctuation, stable line voltage, moreover it is possible to peak load shifting, increase economic efficiency.
The utility model can be selected by the control action of each controller according to relevant parameters such as the sizes of luminous energy irradiation level
Select the mode of operation of system so that when luminous energy irradiation level is too low, system is supplied by the energy-storage units in energy-storage module to power network
Electricity, so as to ensure that photovoltaic DC-to-AC converter keeps rated operation to a certain extent, it is to avoid photovoltaic DC-to-AC converter is in non-specified work
Make the inefficient work under state, improve the conversion efficiency of system.
The utility model is provided with super capacitor between solar panel and energy-storage module, makes solar panel first
Charge, charged again from super capacitor to energy-storage module after storing certain electricity to super capacitor, using super capacitor as transfer,
Play a part of energy snubber, the harmonic component in control system can not only be assisted, can be with the voltage wave in regulating system
It is dynamic, reduce the generated energy caused by system protection and reduce；And just to energy storage mould only after the reserve of electricity of super capacitor is enough
Chemical cell in block is charged, it is to avoid the imperfect charging of fluctuation voltage, greatly improves the charge and discharge of chemical cell
Electrical efficiency, makes the economy of energy storage more obvious.
In the utility model, by the synergy of super capacitor and energy-storage module, hinder or disturb for some reason in power system
When causing the grid-connected voltage to fall, system can complete low voltage crossing more prolonged than General System, so as to ensure that whole
The safety and stability of individual system.
The utility model is simple in construction, safety and stability, can not only significantly improve the light-use effect of photovoltaic energy storage system
Rate, additionally it is possible to the effects such as short-duration power, buffering load fluctuation, balanced power supply output, improvement quality of power supply are played, compared to tradition
The photovoltaic energy storage system more efficient energy-saving of technology.
Brief description of the drawings
Fig. 1 is structural framing figure of the present utility model；
Fig. 2 is a kind of body structure figure of embodiment of the utility model.
Embodiment
The utility model is described further below in conjunction with the accompanying drawings.
Referring to Fig. 1, the utility model discloses a kind of distribution type photovoltaic energy storage system with super capacitor, the super electricity
Holding can be as energy-storage system energy storage transfer, and when luminous energy irradiation level is sufficient, first switch is closed, and second switch disconnects, super
Electric capacity is used for the energy for gathering solar panel collection；Chemical cell underfill electricity and super capacitor charging to a certain extent
When, second switch is closed, and super capacitor is charged to the chemical cell in energy-storage module（Energy storage）, the chemical cell can be with
A large amount of storage energies；When electric cost is higher or luminous energy irradiation deficiency can not generate electricity, the 3rd switch closes, and second switch breaks
Open, chemical cell is powered to photovoltaic DC-to-AC converter and grid entry point（Power supply）, while solar panel can continue to fill to super capacitor
Electricity.
Power system hinder for some reason or disturb cause grid-connected voltage to be fallen when, the super capacitor can coordinate the low electricity of completion
Low voltage crossing certain time can be supported in super capacitor by pressing the chemical cell passed through among function, and the energy-storage module
Access prevents system off-grid afterwards, so that low voltage crossing more prolonged than General System is completed, so as to ensure that whole system
The safety and stability of system.
Generally, the high order that the super capacitor can also control the power electronic equipments such as photovoltaic DC-to-AC converter to be injected to power network is humorous
Ripple.
Generally, the solar panel, super capacitor and energy-storage units are combined by some subelements.
Generally, the storage battery charge controller has early stage constant-current charge, later stage constant-voltage charge, last floating charge
Feature, under the control action of the storage battery charge controller, enters when chemical cell stores less electrical energy to chemical cell
Row constant-current charge；When chemical cell stores more electric energy constant-voltage charge is carried out to chemical cell；It is close in chemical cell energy storage
Floating charge is carried out to chemical cell when full, chemical cell can not only be protected, it is to avoid the damage that heavy current impact is caused, and
And save the charging interval, charge efficiency is high.
The first switch connection solar panel group string and super capacitor, the first switch controller can cut-off
First switch and the output voltage and output current for gathering solar panel group string, the first switch controller are used to detect
The folding that first switch whether is controlled in range of linearity output energy and with this of solar panel.
The second switch connection super capacitor and storage battery charge controller, the second switch controller can cut-off
Second switch and the output voltage and output current for gathering super capacitor.The second switch controller is used to detect super capacitor
Whether the energy of storage, which meets energy storage section, completes the energy required for complete thermal energy storage process and controls opening for second switch with this
Close.
The 3rd switch connection chemical cell and inverter, the 3rd switch controller can cut-off the 3rd switch simultaneously
The output voltage and output current of chemical cell are gathered, the 3rd switch controller is used to detect whether chemical cell stores foot
Enough energy and whether the Rush Hour in electricity consumption and with the folding of this 3rd switch, meanwhile, the 3rd switch controller
It is also connected with temperature sensor, and the backboard temperature computation solar-electricity for the solar panel that can be measured according to temperature sensor
The maximum power point voltage value of pond plate, so as to set power generation mode according to relevant parameter.
The first switch controller, second switch controller and the 3rd switch controller are connected with each other by 485 buses,
First switch controller can send the voltage and current signal of the solar energy group string detected to the 3rd switch controller, the
Three switch controllers can send the instruction cut-off to second switch controller, and the 3rd switch controller can manual selection time mould
Formula, voltage mode and current-mode, so that adaptating law power load, the flat electricity price model of spike paddy, power load are unstable
Place and generated energy larger place is influenceed by irradiation level.
During system operation, the first switch controller closes first switch when voltage pulsation is larger, accesses super electricity
Hold；Output current is larger and closes first switch during less super capacitor energy-storage, super capacitor is accessed；In output current very
First switch is closed during small and less super capacitor energy-storage, super capacitor is accessed；Controlled when voltage is quickly reduced to the 3rd switch
Device processed sends low voltage crossing signal, and first switch is disconnected after the reply of the 3rd switch controller.
The second switch controller closes second switch detecting when voltage is higher and electric current is zero, accesses battery
Charge controller；Second switch is disconnected when detecting relatively low voltage and higher electric current, storage battery charge controller is disconnected；Second
Switch controller is received by 485 buses after the open command of the 3rd switch controller, unconditionally disconnects second switch.
3rd switch controller can be opened according to actual conditions selection time pattern, voltage mode and current-mode etc.
Disconnected pattern, during selection time control model, lunch break charging is may be selected in big factory, and the 3rd is switched off, and non-lunch break is put
Electricity, the 3rd switch closes, while instructing second switch to disconnect, energy storage during trough electricity price may be selected in resident, and the 3rd switches off, ripple
Peak electricity price releases energy, and the 3rd switch closes, while instructing second switch to disconnect；Electricity can be selected in the unstable place of load
Control model is pressed, when power load is smaller, first switch controller detects output current reduction and output voltage is higher, breaks
The 3rd switch is driven, into charged state, when power load is larger, first switch controller detects output current increase and defeated
Go out voltage close to the peak power magnitude of voltage under the temperature conditionss, close the 3rd switch, while instructing second switch to disconnect, enter
Enter discharge condition；Current control mode is selected when irradiation level turns into the principal element of influence photovoltaic system generating, works as irradiation level
When not enough, disconnect the 3rd and switch, system enters charged state, it is to avoid inverter poor efficiency work, when irradiation level is sufficient, close
Upper 3rd switch, while instructing second switch to disconnect, into discharge condition so that inverter energy efficiency operation.
Referring to Fig. 2, as a kind of body structure of the present utility model, Triple distribution casing can be used, the casing
Top layer is used to set relay and protection device, facilitates the maintenance and maintenance of equipment；The intermediate layer of the casing is used to set
Super capacitor and each controller and inverter；The bottom of the casing is used to lay multigroup energy-storage units in energy-storage module, institute
State and be additionally provided with the panel of casing human-computer interaction interface and facilitate staff to operate.
The utility model provides a kind of distributed energy storage system with super capacitor, with control harmonic wave, excellent low
Voltage ride-through function, greatly improves the efficiency for charge-discharge and the quality of power supply of chemical cell, improves the economy that photovoltaic system generates electricity
Property, and distributed energy is preferably merged with bulk power grid.
Disclosed in the utility model it is each preferably with optional technological means, unless otherwise indicated and a preferred or optional skill
Art means are that outside the further restriction of another technological means, can form some different technical schemes in any combination.
Claims (10)
1. a kind of distribution type photovoltaic energy storage system with super capacitor, it is characterised in that including solar panel, the sun
Energy cell panel is connected with first switch, and the first switch is connected respectively at the first path with alternate path, and described first leads to
Road is directly connected to photovoltaic DC-to-AC converter, and the alternate path connects the photovoltaic by the super capacitor and energy-storage module set gradually
Inverter, is provided with second switch, the energy-storage module and the photovoltaic inversion between the super capacitor and the energy-storage module
Provided with the 3rd switch between device, the photovoltaic DC-to-AC converter accesses power network.
2. the distribution type photovoltaic energy storage system as claimed in claim 1 with super capacitor, it is characterised in that be additionally provided with for cutting
The control system for the state that changes jobs, the control system includes being used to test the first of solar panel side voltage x current
Switch controller, the second switch controller for testing super capacitor side voltage x current and for testing chemical cell side
3rd switch controller of voltage x current.
3. the distribution type photovoltaic energy storage system as claimed in claim 2 with super capacitor, it is characterised in that the first switch
Controller connects the first switch, and the second switch controller connects the second switch, the 3rd switch controller
The 3rd switch is connected, each switch controller can control the folding to inductive switch.
4. the distribution type photovoltaic energy storage system as claimed in claim 3 with super capacitor, it is characterised in that the first switch
Controller, second switch controller and the 3rd switch controller are connected with each other by 485 buses.
5. the distribution type photovoltaic energy storage system as claimed in claim 4 with super capacitor, it is characterised in that the energy-storage module
Storage battery charge controller and energy-storage units including interconnection, the storage battery charge controller connection described second are opened
Close, energy-storage units connection the 3rd switch.
6. the distribution type photovoltaic energy storage system as claimed in claim 5 with super capacitor, it is characterised in that the energy-storage units
Including some chemical cells, different chemical cells are serially connected and/or in parallel.
7. the distribution type photovoltaic energy storage system as claimed in claim 6 with super capacitor, it is characterised in that the chemical cell
For lead-acid battery.
8. the distribution type photovoltaic energy storage system as claimed in claim 7 with super capacitor, it is characterised in that the solar-electricity
Pond plate is provided with temperature sensor, and the temperature sensor connects the 3rd switch controller.
9. the distribution type photovoltaic energy storage system as claimed in claim 8 with super capacitor, it is characterised in that be additionally provided with relay
And protection device.
10. the distribution type photovoltaic energy storage system as claimed in claim 9 with super capacitor, it is characterised in that the control system
Provided with human-computer interaction interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621004553.5U CN206332459U (en) | 2016-08-31 | 2016-08-31 | Distribution type photovoltaic energy storage system with super capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621004553.5U CN206332459U (en) | 2016-08-31 | 2016-08-31 | Distribution type photovoltaic energy storage system with super capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206332459U true CN206332459U (en) | 2017-07-14 |
Family
ID=59286791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621004553.5U Expired - Fee Related CN206332459U (en) | 2016-08-31 | 2016-08-31 | Distribution type photovoltaic energy storage system with super capacitor |
Country Status (1)
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|---|---|
| CN (1) | CN206332459U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108111107A (en) * | 2017-12-05 | 2018-06-01 | 重庆文理学院 | The collection of solar cell and management system |
| CN109245716A (en) * | 2018-10-12 | 2019-01-18 | 江苏亚威变压器有限公司 | A kind of distributed photovoltaic and energy-storage system |
| CN113890074A (en) * | 2021-09-03 | 2022-01-04 | 东方电气风电股份有限公司 | Charging and discharging circuit and method for energy storage battery of wind turbine generator |
-
2016
- 2016-08-31 CN CN201621004553.5U patent/CN206332459U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108111107A (en) * | 2017-12-05 | 2018-06-01 | 重庆文理学院 | The collection of solar cell and management system |
| CN109245716A (en) * | 2018-10-12 | 2019-01-18 | 江苏亚威变压器有限公司 | A kind of distributed photovoltaic and energy-storage system |
| CN113890074A (en) * | 2021-09-03 | 2022-01-04 | 东方电气风电股份有限公司 | Charging and discharging circuit and method for energy storage battery of wind turbine generator |
| CN113890074B (en) * | 2021-09-03 | 2023-09-01 | 东方电气风电股份有限公司 | Charging and discharging circuit and method for energy storage battery of wind turbine generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Take super capacitor's distributed photovoltaic energy storage battery system Effective date of registration: 20180412 Granted publication date: 20170714 Pledgee: Beijing first financing Company limited by guarantee Pledgor: Beijing Hyliton Power Technology Co., Ltd. Registration number: 2018990000288 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170714 Termination date: 20180831 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |