CN203368121U - System for distributed photovoltaic power generation unit - Google Patents
System for distributed photovoltaic power generation unit Download PDFInfo
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- CN203368121U CN203368121U CN2013205011465U CN201320501146U CN203368121U CN 203368121 U CN203368121 U CN 203368121U CN 2013205011465 U CN2013205011465 U CN 2013205011465U CN 201320501146 U CN201320501146 U CN 201320501146U CN 203368121 U CN203368121 U CN 203368121U
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- bus
- inverter
- power generation
- charging
- photovoltaic power
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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
- 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
Abstract
The utility model discloses a system for a distributed photovoltaic power generation unit. The system comprises a plurality of photovoltaic modules, a plurality of charging and discharging controller and at least one inverter, wherein each of the photovoltaic modules is electrically connected with an input port of the charging and discharging controller, each of the charging and discharging controllers is then connected to a DC bus, the DC bus is further connected to a DC storage battery pack and connected to a DC load at the same time; the inverter is also connected to the DC bus and further connected to an AC bus, and the inverter is connected with the AC load through the AC bus. The system disclosed by the utility model is simple and compact in structure, convenient to install and maintain, and safe and reliable to use. Meanwhile, the system can select an off-grid mode or a grid-connected mode flexibly, and solves technical problems exiting in the prior art.
Description
Technical field
The utility model relates to a kind of generating family system, is specifically related to a kind of distributed photovoltaic power generation family system.
Background technology
Photovoltaic generation is one of generation mode of the most clean, environmental protection in the world.
The place that every sunlight can shine, all can utilize photovoltaic generation.
Replacing fossil energy with clean energy resource, is the only way that reduces PM2.5, the biological environment of preserving our planet.
Photovoltaic generation is the same with other generation mode, has length to have short.Solar energy is inexhaustible.The resource of photovoltaic generation can be not short, is that it is long; Sunlight can not impinge upon a place in 24 hours, and intensity also can constantly change, and the electric current that photovoltaic generation produces is unstable is that it is short.
But other energy is the same with utilizing, we can maximize favourable factors and minimize unfavourable ones by technological means.By diversified energy storage mode, unbalanced electric energy is first stored, then use by demand.What the generating of this and fossil energy, hydroelectric difference only were latter two generation mode deposit is fuel and potential energy, and photovoltaic generation stores, is electric energy, and technical difficulty is slightly large.All storages all can increase cost, and the height of cost is relevant to technology.At present, in the unlapped place of national grid, photovoltaic generation should be best generation mode.
The place covered at national grid, the support electric energy if not the electric energy that photovoltaic generation is produced as electrical network, but, as supplemental resources, the peak regulation resource of electrical network, photovoltaic generation can become a kind of electric power resource of cost performance optimum.Because the time of photovoltaic generating system work just in time by day, and be just in time the peak period of network load daytime, sends out i.e. use, needn't invest electric energy storage device, also can take full advantage of the own distribution of user.
The photovoltaic generation mode is subject to the restriction of photovoltaic resources own characteristic, and should not continue to use and build thermoelectricity, water power, nuclear power, and the thinking of building large power station, large electrical network, and should be advisable with the development distributed power generation, build power station on a small scale.Power station is built near load on a small scale, utilizes idle space or is combined with building, gardens facility, utilizes as far as possible existing electrical network, sends out and uses or the part storage.Though the single scale in such power station is little, the have ready conditions unit and the family that build a station are countless.Be exactly that fraction unit or family build up, integral power and energy output can be all horrendous numerals., but at present domestic not for the above-mentioned distributed photovoltaic power generation family system that needs design.
At present, known distributed photovoltaic power generation system is divided into from net type and two kinds of working methods of grid type, and these two kinds of systems respectively have pluses and minuses, and the former can be to powering without the electrical network regional stability, but cost is high and battery system has age limit, high-power from the website performance difficulty; Latter's cost is relatively low but in the situation that the dead electricity of access electrical network own, for avoiding the islet operation meeting out of service, causes the wasting of resources.
The utility model content
The utility model has overcome the deficiencies in the prior art, a kind of distributed photovoltaic power generation family system is provided, this system configuration is simple compact, convenient for installation and maintenance, safe and reliable, can select flexibly, from net type and two kinds of modes of grid type, to have solved the technical problem existed in the prior art simultaneously.
For solving above-mentioned technical problem, the utility model by the following technical solutions:
A kind of distributed photovoltaic power generation family system, above-mentioned system comprises:
A plurality of photovoltaic modulies and a plurality of charging-discharging controller, at least one inverter, each above-mentioned photovoltaic module electrically connects with the input port of a charging-discharging controller separately, each charging-discharging controller accesses DC bus again, above-mentioned DC bus also is connected to the direct-flow storage battery group, is connected to DC load simultaneously; Above-mentioned inverter also accesses DC bus, and above-mentioned inverter is connected with ac bus, by ac bus, with AC load, connects.
Above-mentioned photovoltaic module has at least three covers.
Above-mentioned inverter is combining inverter, and above-mentioned straight line bus is connected by combining inverter to the civil power ac bus.
Above-mentioned system is non-when grid-connected without civil power, by from net Driven by inverter AC load.
Above-mentioned DC bus connects direct current output biomass fermentation motor or common internal combustion engine generator or connects the support of super capacitor power.Connecting the support of super capacitor power is mainly for the occasion that the impact load requirement is arranged.
Above-mentioned inverter connects civil power by ac bus, and a plurality of charging-discharging controllers are connected on DC bus in parallel simultaneously.
Each above-mentioned inverter inside includes short-circuit protector FU, and each above-mentioned charging-discharging controller inside also includes short-circuit protector FU.
There is bracing frame at the back side of above-mentioned photovoltaic module for supporting.
There is bracing frame at the back side of above-mentioned photovoltaic module for supporting.
Above-mentioned charging-discharging controller is the MPPT charging-discharging controller; Above-mentioned photovoltaic module is 9-36 volt photovoltaic module.
Compared with prior art, the beneficial effects of the utility model are:
1, the battery of photovoltaic module through having the maximum power tracing function charges and discharge controller (hereinafter to be referred as controller) access DC bus, DC bus-bar voltage be followed the trail of and be monitored to controller itself can to the maximum power of photovoltaic module, avoid over-charging of battery, controller can be in parallel.
2, advantage of the present utility model is to maximize the assembly generating capacity, indivedual not impact of component faults system operations.DC bus connects battery pack, can directly be with DC load.Battery capacity configures according to demand, heavyly applies from net that battery capacity is large, and heavy grid-connected application battery capacity can reduce, and for latter event, battery pack can substitute a life-saving with super capacitor or electrochemical capacitor.Combining inverter link DC bus and ac bus, according to demand by and net mode or move from net mode.Do not configure grid-connected inverter system and develop into pure off-grid system, DC bus is not with DC load system to develop into pure grid-connected system.
The accompanying drawing explanation
Fig. 1 is that the utility model connects block diagram.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further elaborated.
As Fig. 1, a kind of distributed photovoltaic power generation family system, system comprises: a plurality of photovoltaic modulies (at least three covers) and a plurality of charging-discharging controller, charging-discharging controller preferably adopts the MPPT charging-discharging controller; Each above-mentioned photovoltaic module is the 9-36V photovoltaic module, each photovoltaic module electrically connects with the input port of a charging-discharging controller separately, each charging-discharging controller accesses DC bus again, the stream bus also is connected to the direct-flow storage battery group, is connected to DC load simultaneously; Straight above-mentioned inverter connects civil power by ac bus, and a plurality of charging-discharging controllers are connected on DC bus in parallel simultaneously.Above-mentioned inverter also accesses DC bus, and above-mentioned inverter is connected with ac bus, by ac bus, with AC load, connects.The straight line bus is connected by combining inverter to the civil power ac bus.Above-mentioned system is non-when grid-connected without civil power, by from net Driven by inverter AC load.DC bus connects direct current output biomass fermentation motor or common internal combustion engine generator or connects the support of super capacitor power.Connecting the support of super capacitor power is mainly for the occasion that the impact load requirement is arranged.Each inverter inside includes short-circuit protector FU, and each above-mentioned charging-discharging controller inside also includes short-circuit protector FU.There is bracing frame at the back side of photovoltaic module for supporting.
The utility model can also be applied to electrical power storage and the management of non-photovoltaic system as dispersion distribution energy such as wind energy, biogas, natural gas, underground heat, small power stations.Only photovoltaic module need to be replaced to corresponding energy supplier gets final product.
Claims (10)
1. a distributed photovoltaic power generation family system, it is characterized in that: described system comprises: a plurality of photovoltaic modulies, a plurality of charging-discharging controller and at least one inverter, the input port of described each photovoltaic module and charging-discharging controller electrically connects, each charging-discharging controller accesses DC bus again, described DC bus also is connected to the direct-flow storage battery group, is connected to DC load simultaneously; Described inverter also accesses DC bus, and described inverter is connected with ac bus, by ac bus, with AC load, connects.
2. distributed photovoltaic power generation according to claim 1 family system, it is characterized in that: described photovoltaic module has at least three covers.
3. distributed photovoltaic power generation according to claim 1 family system, it is characterized in that: described inverter is combining inverter; Described straight line bus is connected by combining inverter to the civil power ac bus.
4. distributed photovoltaic power generation according to claim 1 family system is characterized in that: described system is non-when grid-connected without civil power, by from net Driven by inverter AC load.
5. distributed photovoltaic power generation according to claim 1 family system, is characterized in that: described DC bus connection direct current output biomass fermentation motor or common internal combustion engine generator or the support of connection super capacitor power.
6. distributed photovoltaic power generation according to claim 1 family system, it is characterized in that: described inverter connects civil power by ac bus, and a plurality of charging-discharging controllers are connected on DC bus in parallel simultaneously.
7. distributed photovoltaic power generation according to claim 1 family system, it is characterized in that: described each inverter inside includes short-circuit protector FU, and described each charging-discharging controller inside also includes short-circuit protector FU.
8. distributed photovoltaic power generation according to claim 1 family system, it is characterized in that: the ac output end mouth on described inverter is 220V ac output end mouth.
9. distributed photovoltaic power generation according to claim 1 family system is characterized in that: there is bracing frame at the back side of described photovoltaic module for supporting.
10. distributed photovoltaic power generation according to claim 1 family system, it is characterized in that: described charging-discharging controller is the MPPT charging-discharging controller; Described photovoltaic module is 9-36 volt photovoltaic module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013205011465U CN203368121U (en) | 2013-08-16 | 2013-08-16 | System for distributed photovoltaic power generation unit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013205011465U CN203368121U (en) | 2013-08-16 | 2013-08-16 | System for distributed photovoltaic power generation unit |
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| CN203368121U true CN203368121U (en) | 2013-12-25 |
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| CN2013205011465U Expired - Fee Related CN203368121U (en) | 2013-08-16 | 2013-08-16 | System for distributed photovoltaic power generation unit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106169777A (en) * | 2016-07-24 | 2016-11-30 | 芜湖格利特新能源科技有限公司 | A kind of direct current and the micro-grid system exchanging hybrid power supply |
| CN106374522A (en) * | 2016-09-09 | 2017-02-01 | 芜湖市旭辉电工新材料有限责任公司 | Geothermal heat-collecting cable apparatus powered by photovoltaic microgrid |
| CN111130092A (en) * | 2018-10-30 | 2020-05-08 | 萨基姆通讯能源及电信联合股份公司 | Solar energy household system |
-
2013
- 2013-08-16 CN CN2013205011465U patent/CN203368121U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106169777A (en) * | 2016-07-24 | 2016-11-30 | 芜湖格利特新能源科技有限公司 | A kind of direct current and the micro-grid system exchanging hybrid power supply |
| CN106374522A (en) * | 2016-09-09 | 2017-02-01 | 芜湖市旭辉电工新材料有限责任公司 | Geothermal heat-collecting cable apparatus powered by photovoltaic microgrid |
| CN111130092A (en) * | 2018-10-30 | 2020-05-08 | 萨基姆通讯能源及电信联合股份公司 | Solar energy household system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| 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: 20131225 Termination date: 20160816 |