CN207166210U - Distributed photovoltaic power generation DC power-supply system - Google Patents
Distributed photovoltaic power generation DC power-supply system Download PDFInfo
- Publication number
- CN207166210U CN207166210U CN201720976227.9U CN201720976227U CN207166210U CN 207166210 U CN207166210 U CN 207166210U CN 201720976227 U CN201720976227 U CN 201720976227U CN 207166210 U CN207166210 U CN 207166210U
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- CN
- China
- Prior art keywords
- distributed photovoltaic
- power generation
- voltage
- photovoltaic power
- output end
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Photovoltaic Devices (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The utility model discloses a kind of distributed photovoltaic power generation DC power-supply system, it includes distributed photovoltaic power generation system, DC voltage-stabilizing system and energy-storage system, the input of the output end access DC voltage-stabilizing system of the distributed photovoltaic power generation system, the first output end output dc source of the DC voltage-stabilizing system, the second output end and the energy-storage system of the DC voltage-stabilizing system are electrically connected with.The utility model provides a kind of distributed photovoltaic power generation DC power-supply system, reduces the electric energy loss brought due to inversion and switching process, and relatively easily realize energy storage.
Description
Technical field
A kind of distributed photovoltaic power generation DC power-supply system is the utility model is related to, belongs to field of photovoltaic power generation.
Background technology
At present, the distributed photovoltaic electric power system being most widely used, it is the photovoltaic generation for building City Building roof in
Project, existing distributed photovoltaic electric power system, direct current is produced by distributed photovoltaic power generation system, switchs to mark through inverter
Accurate AC power, to provide electric energy using electrical equipment, and can be grid-connected.Distributed photovoltaic power generation system refers in particular to use photovoltaic module,
Solar energy is converted directly into the distributed generation system of electric energy, it is a kind of new, tool generating with broad prospects for development
With comprehensive utilization of energy mode, it advocate generate electricity nearby, nearby it is grid-connected, change nearby, the principle that uses nearby, can not only have
Effect improves the generated energy of same size photovoltaic plant, while also efficiently solves loss of the electric power in boosting and long-distance transport and ask
Topic.
In general, after distributed photovoltaic power generation system generates electricity, direct current is changed into friendship by caused electric energy by inverter
Power delivery is flowed to DC electric apparatus, and equipped with single rectifier in each DC electric apparatus, AC power is re-converted to directly
Power supply is flowed, is used for DC electric apparatus.DC inverter is into AC power, it will produces energy loss, then makes in DC electric apparatus
During, AC power is changed into dc source again, will also produce loss, such dual loss will consume largely
Electric energy.
The content of the invention
Technical problem to be solved in the utility model is：A kind of overcome the deficiencies in the prior art, there is provided distributed photovoltaic
Generating DC power-supply system, the electric energy loss brought due to inversion and switching process is reduced, and relatively easily realize energy storage.
In order to solve the above-mentioned technical problem, the technical solution of the utility model is：
A kind of distributed photovoltaic power generation DC power-supply system, it includes distributed photovoltaic power generation system, DC voltage-stabilizing system
And energy-storage system, the input of the output end access DC voltage-stabilizing system of the distributed photovoltaic power generation system, the direct current are steady
The first output end output dc source of pressure system, the second output end of the DC voltage-stabilizing system electrically connect with energy-storage system
Connect.
Further, the energy-storage system includes charge and discharge device and battery, the input of the charge and discharge device with it is straight
The second output end for flowing voltage-stabilizing system is electrically connected with, and output end and the battery of the charge and discharge device are electrically connected with.
Further, the dc source includes multiple voltage class.
Above-mentioned technical proposal is employed, the utility model has following beneficial effect：
After distributed photovoltaic power generation system generates electricity, caused direct current is directly over DC voltage-stabilizing system, and generation continues steady
The fixed dc source with multiple voltage class, directly use for DC electric apparatus, without inverter and rectifier, greatly drop
The low electric energy loss brought due to inversion and switching process, improves the utilization rate of distributed photovoltaic power generation system, and have
Standby energy-storage system, can relatively easily realize energy storage.
Brief description of the drawings
Fig. 1 is the theory diagram of the utility model distributed photovoltaic power generation DC power-supply system；
Fig. 2 is the theory diagram of the distributed photovoltaic electric power system of prior art.
Embodiment
In order that content of the present utility model is easier to be clearly understood, below according to specific embodiment and combine attached
Figure, is described in further detail to the utility model.
As shown in figure 1, a kind of distributed photovoltaic power generation DC power-supply system, it includes distributed photovoltaic power generation system, straight
Voltage-stabilizing system and energy-storage system are flowed, the output end of the distributed photovoltaic power generation system accesses the input of DC voltage-stabilizing system,
The first output end output dc source of the DC voltage-stabilizing system, the second output end and the energy storage system of the DC voltage-stabilizing system
System is electrically connected with.
As shown in figure 1, the energy-storage system includes charge and discharge device and battery, the input of the charge and discharge device with
Second output end of DC voltage-stabilizing system is electrically connected with, and output end and the battery of the charge and discharge device are electrically connected with.
As shown in figure 1, the dc source includes multiple voltage class, suitable for the DC electric apparatus of different input voltages.
Operation principle of the present utility model is as follows：
Distributed photovoltaic power generation system converts solar energy into electrical energy, and electric energy passes through DC voltage-stabilizing system in the form of direct current
System, it is divided into two-way output, the continual and steady dc source with multiple voltage class of the first output end output, for different inputs
The DC electric apparatus of voltage uses, and the second output end connection energy-storage system, energy storage, that night is carried out to battery by charge and discharge device
When above or not having the sun, battery starts to discharge, and is continuously DC electric apparatus power supply.
Particular embodiments described above, technical problem, technical scheme and the beneficial effect solved to the utility model are entered
Further description is gone, should be understood that and the foregoing is only specific embodiment of the utility model, and do not have to
In limitation the utility model, all within the spirit and principles of the utility model, any modification, equivalent substitution and improvements done
Deng should be included within the scope of protection of the utility model.
Claims (3)
- A kind of 1. distributed photovoltaic power generation DC power-supply system, it is characterised in that：It includes distributed photovoltaic power generation system, direct current Voltage-stabilizing system and energy-storage system, the input of the output end access DC voltage-stabilizing system of the distributed photovoltaic power generation system, institute State the first output end output dc source of DC voltage-stabilizing system, the second output end and energy-storage system of the DC voltage-stabilizing system It is electrically connected with.
- 2. distributed photovoltaic power generation DC power-supply system according to claim 1, it is characterised in that：The energy-storage system bag Charge and discharge device and battery are included, the input of the charge and discharge device electrically connects with the second output end of DC voltage-stabilizing system Connect, output end and the battery of the charge and discharge device are electrically connected with.
- 3. distributed photovoltaic power generation DC power-supply system according to claim 1, it is characterised in that：The dc source bag Include multiple voltage class.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720976227.9U CN207166210U (en) | 2017-08-07 | 2017-08-07 | Distributed photovoltaic power generation DC power-supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720976227.9U CN207166210U (en) | 2017-08-07 | 2017-08-07 | Distributed photovoltaic power generation DC power-supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207166210U true CN207166210U (en) | 2018-03-30 |
Family
ID=61716133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720976227.9U Expired - Fee Related CN207166210U (en) | 2017-08-07 | 2017-08-07 | Distributed photovoltaic power generation DC power-supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207166210U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108512213A (en) * | 2018-04-12 | 2018-09-07 | 安徽东源电力有限公司 | Distributed power generation power supply system |
-
2017
- 2017-08-07 CN CN201720976227.9U patent/CN207166210U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108512213A (en) * | 2018-04-12 | 2018-09-07 | 安徽东源电力有限公司 | Distributed power generation power supply system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20190807 |