CN210744761U - Grid-connected solar photovoltaic power generation system for building - Google Patents
Grid-connected solar photovoltaic power generation system for building Download PDFInfo
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- CN210744761U CN210744761U CN201922091124.6U CN201922091124U CN210744761U CN 210744761 U CN210744761 U CN 210744761U CN 201922091124 U CN201922091124 U CN 201922091124U CN 210744761 U CN210744761 U CN 210744761U
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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
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Abstract
The utility model relates to a grid-connected solar photovoltaic power generation system for building, which comprises a commercial power grid and an electric load system which are communicated, and also comprises a photovoltaic array, a combiner box, an inverter and a grid-connected cabinet which are connected in sequence, wherein the grid-connected cabinet is communicated with the commercial power grid and the electric load system at the same time; the utility model provides a current solar photovoltaic power generation system generated energy be not enough to satisfy building partial load's disadvantage, make full use of solar photovoltaic power generation system and commercial power electric wire netting are the building power supply simultaneously.
Description
Technical Field
The utility model relates to a grid-connected type solar photovoltaic power generation system for building belongs to building electrical design field.
Background
With the rapid development of science and technology and economy in China, the consumption of energy is continuously improved, but the per capita amount of mineral resources in China is less than half of the world, the unit output value energy consumption is 2 times of the average level of the world, the energy consumption of main products is 40% higher than that of developed countries, and 70% of the energy consumption still depends on thermal power generation. Because the energy problem is a big matter related to the survival and development of a country, a new type of renewable energy is urgently needed to be searched to supplement the non-renewable limitation of mineral resources; the solar renewable energy source becomes the preferred and energetically developed energy source in developed countries in the world, and because the production cost of the solar photovoltaic power generation system is continuously reduced, the solar photovoltaic power generation system can be utilized to provide a working power supply for part of the electric loads of the solar photovoltaic power generation system in the building design.
SUMMERY OF THE UTILITY MODEL
The utility model provides a grid-connected type solar photovoltaic power generation system for building solves the inferior potential that current solar photovoltaic power generation system generated energy is not enough to satisfy building partial load, and make full use of solar photovoltaic power generation system and commercial power electric wire netting are the building power supply simultaneously.
The utility model provides a technical scheme that its technical problem adopted is:
a building grid-connected solar photovoltaic power generation system comprises a commercial power grid and an electric load system which are communicated, and further comprises a photovoltaic array, a combiner box, an inverter and a grid-connected cabinet which are sequentially connected, wherein the grid-connected cabinet is simultaneously communicated with the commercial power grid and the electric load system;
as a further preferred aspect of the present invention, the photovoltaic array comprises a plurality of groups of solar cells, and the plurality of groups of solar cells are connected in sequence;
the junction box comprises a first fuse, a first surge protector, a direct current breaker and a junction collection device, wherein the first fuse comprises three output ends which are respectively communicated with an input end of the first surge protector, an input end of the direct current breaker and an input end of the junction collection device, and an output end of the direct current breaker is communicated with an input end of the inverter;
the grid-connected cabinet comprises an alternating current breaker, a second surge protector, an alternating current contactor, a voltage relay, a frequency relay, an isolating switch, an intelligent electric instrument and a second fuse, wherein the input end of the alternating current contactor is connected with the output end of the inverter;
the output end of the alternating current circuit breaker is connected with the input end of the isolating switch, and the output end of the second fuse is connected with the input end of the second surge protector;
the output end of the isolating switch is respectively communicated with the electric load system and the commercial power grid;
as a further preferred aspect of the present invention, the converging collecting device is a photovoltaic converging collecting device with model number AGF-M16T;
as a further preferred aspect of the present invention, the aforementioned intelligent power meter employs a multifunctional meter, and can realize recording of voltage, current, and power information.
Through above technical scheme, for prior art, the utility model discloses following beneficial effect has:
1. the utility model discloses utilize grid-connected solar photovoltaic power generation system to solve in the present architectural design, the generated energy of solar photovoltaic power generation system often is not enough to satisfy the partial load problem in the building structure;
2. the utility model discloses a whole setting of grid-connected solar photovoltaic power generation system for solar photovoltaic power generation system and commercial power are the building power supply simultaneously.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic overall structure diagram of a preferred embodiment of the present invention;
fig. 2 is a schematic diagram of the system architecture of the preferred embodiment of the present invention.
In the figure: 1 is the solar photovoltaic array, 2 is first fuse, 3 is first surge protector, 4 are direct current circuit breaker, 5 are collection system that converges, 6 are the dc-to-ac converter, 7 are ac circuit breaker, 8 are second surge protector, 9 are ac contactor, 10 are voltage relay, 11 are frequency relay, 12 are isolator, 13 are intelligent electric power instrument, 14 are the second fuse.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.
As shown in fig. 1, the power generation system of the present invention has a schematic view, wherein a solar photovoltaic array 1 obtains solar electric energy, and the generated electric energy is transmitted to a commercial power grid and an electric load system by the adjustment of the grid-connected structure explained in the present application;
when the maximum power generation power acquired by the solar photovoltaic array 1 is greater than the power consumption of the electric load system, the rest electric quantity is transmitted to a commercial power grid, and then the electric quantity is supplied to other electric load equipment on the commercial power grid through the electric grid; when the maximum power generation power acquired by the solar photovoltaic array is smaller than the power consumption of the power load system, the electric quantity in the power load system is provided by the solar photovoltaic array and the commercial power grid at the same time, but the system sets the electric energy acquired by the solar photovoltaic array 1 to be preferentially used.
Based on the above principle, the utility model provides a preferred embodiment, as shown in fig. 2, including photovoltaic array, collection flow box, dc-to-ac converter 6 and the cabinet that is incorporated into the power networks that connects in order, the cabinet that is incorporated into the power networks and uses the electrical load system to communicate simultaneously;
the photovoltaic array comprises a plurality of groups of solar cells which are connected in sequence;
the junction box comprises a first fuse 2, a first surge protector 3, a direct current breaker 4 and a junction collection device 5, wherein the first fuse 2 comprises three output ends which are respectively communicated with the input end of the first surge protector 3, the input end of the direct current breaker 4 and the input end of the junction collection device 5, and the output end of the direct current breaker 4 is communicated with the input end of the inverter 6;
in the preferred embodiment, each string of solar cell modules of a plurality of groups of solar cells is connected to the confluence collecting device through a line and a direct current breaker switch, then is connected with the upper opening of the main air switch through respective check diodes, and finally sends the electric energy of the square matrix to the grid-connected cabinet through the lower opening of the main air switch;
the converging collecting device can be an AGF-M16T photovoltaic converging collecting device; the grid-connected cabinet comprises an alternating current breaker 7, a second surge protector 8, an alternating current contactor 9, a voltage relay 10, a frequency relay 11, an isolating switch 12, an intelligent electric power instrument 13 and a second fuse 14, wherein the input end of the alternating current contactor 9 is connected with the output end of the inverter 6, and the alternating current contactor 9 comprises five output ends which are respectively connected with the input end of the voltage relay 10, the input end of the frequency relay 11, the input end of the intelligent electric power instrument 13, the input end of the second fuse 14 and the input end of the alternating current breaker 7; the intelligent power meter adopts a multifunctional meter, so that the recording of voltage, current and power information can be realized;
the output end of the alternating current breaker 7 is connected with the input end of the isolating switch 12, and the output end of the second fuse 14 is connected with the input end of the second surge protector 8;
the output end of the isolating switch 12 is respectively communicated with an electric load system and a commercial power grid.
All parts realize the intercommunication of whole structure through connecting cable in this application.
The process of supplying power by the photovoltaic power generation system of the above preferred embodiment is as follows: the solar photovoltaic array 1 receives solar energy and converts the solar energy into a power supply, the power supply is sent into a confluence collecting device 5 in a confluence box through a connecting circuit, the power supply is sent into an inverter 6 through a connecting cable, the inverter 6 converts direct current into alternating current, the power supply characteristics of the alternating current coming from inversion after photovoltaic power generation output are adjusted through a grid-connected cabinet, and the power supply characteristics comprise (amplitude, frequency, phase difference and the like) so that the adjusted alternating current can be directly connected with a mains supply power grid in a grid mode, and after the photovoltaic power generation power supply is connected into the mains supply power grid, the power supply and.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The meaning of "and/or" as used herein is intended to include both the individual components or both.
The term "connected" as used herein may mean either a direct connection between components or an indirect connection between components via other components.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (3)
1. The utility model provides a grid-connected solar photovoltaic power generation system for building, includes the commercial power electric wire netting and the power consumption load system of intercommunication, its characterized in that: the photovoltaic array, the combiner box, the inverter and the grid-connected cabinet are sequentially connected, and the grid-connected cabinet is simultaneously communicated with a commercial power grid and an electric load system;
the photovoltaic array comprises a plurality of groups of solar cells which are connected in sequence;
the junction box comprises a first fuse, a first surge protector, a direct current breaker and a junction collection device, wherein the first fuse comprises three output ends which are respectively communicated with an input end of the first surge protector, an input end of the direct current breaker and an input end of the junction collection device, and an output end of the direct current breaker is communicated with an input end of the inverter;
the grid-connected cabinet comprises an alternating current breaker, a second surge protector, an alternating current contactor, a voltage relay, a frequency relay, an isolating switch, an intelligent electric instrument and a second fuse, wherein the input end of the alternating current contactor is connected with the output end of the inverter;
the output end of the alternating current circuit breaker is connected with the input end of the isolating switch, and the output end of the second fuse is connected with the input end of the second surge protector;
the output end of the isolating switch is respectively communicated with the electric load system and the commercial power grid.
2. The grid-connected solar photovoltaic power generation system for buildings according to claim 1, characterized in that: the type of the confluence collecting device is AGF-M16T photovoltaic convergence collecting device.
3. The grid-connected solar photovoltaic power generation system for buildings according to claim 2, characterized in that: the intelligent power meter adopts a multifunctional meter, and can record voltage, current and power information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922091124.6U CN210744761U (en) | 2019-11-28 | 2019-11-28 | Grid-connected solar photovoltaic power generation system for building |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922091124.6U CN210744761U (en) | 2019-11-28 | 2019-11-28 | Grid-connected solar photovoltaic power generation system for building |
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| CN210744761U true CN210744761U (en) | 2020-06-12 |
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| CN201922091124.6U Active CN210744761U (en) | 2019-11-28 | 2019-11-28 | Grid-connected solar photovoltaic power generation system for building |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116595696A (en) * | 2023-05-31 | 2023-08-15 | 四川省建筑设计研究院有限公司 | Photovoltaic outer elevation electrical design method and system |
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2019
- 2019-11-28 CN CN201922091124.6U patent/CN210744761U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116595696A (en) * | 2023-05-31 | 2023-08-15 | 四川省建筑设计研究院有限公司 | Photovoltaic outer elevation electrical design method and system |
| CN116595696B (en) * | 2023-05-31 | 2024-04-09 | 四川省建筑设计研究院有限公司 | Photovoltaic outer elevation electrical design method and system |
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