CN202712877U - Three-phase photovoltaic grid-connected power generation system - Google Patents
Three-phase photovoltaic grid-connected power generation system Download PDFInfo
- Publication number
- CN202712877U CN202712877U CN2012203332414U CN201220333241U CN202712877U CN 202712877 U CN202712877 U CN 202712877U CN 2012203332414 U CN2012203332414 U CN 2012203332414U CN 201220333241 U CN201220333241 U CN 201220333241U CN 202712877 U CN202712877 U CN 202712877U
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- China
- Prior art keywords
- inverter
- generation system
- transformer
- filter
- photovoltaic grid
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- 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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- 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 three-phase photovoltaic grid-connected power generation system, which comprises a capacitor, a photovoltaic array, an inverter, a filter, a transformer and a power grid, wherein the capacitor is connected between the two input ends of the inverter; the two input ends of the inverter are separately connected with the photovoltaic array; the output end of the inverter is connected with the input end of the filter; the output end of the filter is connected with a primary side of the transformer; and a secondary side of the transformer is connected with the power grid. The three-phase photovoltaic grid-connected power generation system can be used to greatly improve the solar power generation conversion efficiency of a power generation unit and can contribute to the relief of the power shortage situation during peak hours of electricity consumption.
Description
Technical field
The utility model relates to a kind of three-phase photovoltaic grid-connected electricity generation system.
Background technology
The photovoltaic parallel in system of most is general, and what adopt is the transmission of electricity of generating electricity of the pattern of solar cell array, controller, batteries and inverter.Because flowage structure is relatively simple, thus cause conversion efficiency relatively on the low side, the problem of through-put power less.In peak of power consumption period winter in summer, conversion efficiency meeting on the low side causes the problem meeting bigger than normal of electrical network electricity consumption breach particularly evident especially.Simultaneously because to need batteries be its energy storage and stabilized power supply, cause runing and the raising of maintenance cost.
Summary of the invention
The purpose of this utility model is to overcome the defective of prior art and provides a kind of cost low, and conversion efficiency is high, and through-put power is large, the grid-connected photovoltaic system of easy maintenance.
For achieving the above object, the utility model adopts following technical scheme:
A kind of three-phase photovoltaic grid-connected electricity generation system comprises electric capacity, photovoltaic array, inverter, filter, transformer and electrical network, wherein:
Described electric capacity is connected between two inputs of described inverter;
Two inputs of described inverter connect respectively described photovoltaic array;
The output of described inverter connects the input of described filter;
The output of described filter connects the former limit of described transformer;
The secondary of described transformer connects described electrical network.
Above-mentioned three-phase photovoltaic grid-connected electricity generation system, described filter comprises inductance and electric capacity, wherein, the two ends of described inductance connect respectively the former limit of output and the described transformer of described inverter; The described inductance of one termination of described electric capacity and the end that joins of described transformer primary side, other end ground connection.
Above-mentioned three-phase photovoltaic grid-connected electricity generation system, described alternating current are the alternating current of 50HZ or 60HZ fundamental frequency.
Above-mentioned three-phase photovoltaic grid-connected electricity generation system, described three-phase photovoltaic grid-connected electricity generation system comprise that also one is connected on the diode between described photovoltaic array and the inverter.
The beneficial effects of the utility model are: the utility model carries out daylighting generating based on three-phase photovoltaic grid-connected, making the generating unit carry out the solar power generation conversion efficiency significantly improves, through-put power is large, cost is low, easy maintenance plays useful help for the situation of alleviating peak of power consumption period power tense.
Description of drawings
Fig. 1 is the structural representation of three-phase photovoltaic grid-connected system of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
See also Fig. 1, three-phase photovoltaic grid-connected electricity generation system of the present utility model comprises photovoltaic array 1, inverter 2, filter 3, transformer 4, electrical network 5, electric capacity 6 and diode 7, wherein:
2 two inputs of inverter connect respectively photovoltaic array 1, and one of them input connects photovoltaic arrays 1 by diode 7, and the positive pole of this diode 7 connects photovoltaic array 1, and negative pole connects inverter 2;
The output of inverter 2 connects the input of filter 3;
The former limit of the output connection transformer 4 of filter 3;
The secondary of transformer 4 connects electrical network 5;
Above embodiment is only for illustration of the utility model, but not to restriction of the present utility model, person skilled in the relevant technique, in the situation that does not break away from spirit and scope of the present utility model, can also make various conversion or modification, therefore all technical schemes that are equal to also should belong to category of the present utility model, should be limited by each claim.
Claims (4)
1. a three-phase photovoltaic grid-connected electricity generation system is characterized in that, comprises electric capacity, photovoltaic array, inverter, filter, transformer and electrical network, wherein:
Described electric capacity is connected between two inputs of described inverter;
Two inputs of described inverter connect respectively described photovoltaic array;
The output of described inverter connects the input of described filter;
The output of described filter connects the former limit of described transformer;
The secondary of described transformer connects described electrical network.
2. three-phase photovoltaic grid-connected electricity generation system according to claim 1 is characterized in that, described filter comprises inductance and electric capacity, and wherein, the two ends of described inductance connect respectively the former limit of output and the described transformer of described inverter; The described inductance of one termination of described electric capacity and the end that joins of described transformer primary side, other end ground connection.
3. three-phase photovoltaic grid-connected electricity generation system according to claim 1 is characterized in that, described alternating current is the alternating current of 50HZ or 60HZ fundamental frequency.
4. three-phase photovoltaic grid-connected electricity generation system according to claim 1 is characterized in that, described three-phase photovoltaic grid-connected electricity generation system comprises that also one is connected on the diode between described photovoltaic array and the inverter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203332414U CN202712877U (en) | 2012-07-10 | 2012-07-10 | Three-phase photovoltaic grid-connected power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203332414U CN202712877U (en) | 2012-07-10 | 2012-07-10 | Three-phase photovoltaic grid-connected power generation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202712877U true CN202712877U (en) | 2013-01-30 |
Family
ID=47593142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012203332414U Expired - Lifetime CN202712877U (en) | 2012-07-10 | 2012-07-10 | Three-phase photovoltaic grid-connected power generation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202712877U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103560577A (en) * | 2013-11-18 | 2014-02-05 | 国家电网公司 | Optimizing configuration system of novel photovoltaic VRB energy storage hybrid system |
-
2012
- 2012-07-10 CN CN2012203332414U patent/CN202712877U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103560577A (en) * | 2013-11-18 | 2014-02-05 | 国家电网公司 | Optimizing configuration system of novel photovoltaic VRB energy storage hybrid system |
| CN103560577B (en) * | 2013-11-18 | 2016-02-10 | 国家电网公司 | A kind of Optimizing Configuration System of novel photovoltaic VRB energy storage hybrid system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130130 |
|
| CX01 | Expiry of patent term |