CN208401558U - A kind of distributed photovoltaic power generation system - Google Patents
A kind of distributed photovoltaic power generation system Download PDFInfo
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- CN208401558U CN208401558U CN201821014112.2U CN201821014112U CN208401558U CN 208401558 U CN208401558 U CN 208401558U CN 201821014112 U CN201821014112 U CN 201821014112U CN 208401558 U CN208401558 U CN 208401558U
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- Prior art keywords
- control switch
- full control
- power generation
- generation system
- 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
- 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
A kind of distributed photovoltaic power generation system, including several subelements and several reactors；The subelement includes full control switch, photovoltaic generating module, breaker and power resistor；The full control switch includes No. 1 full control switch T1, No. 2 full control switch T2 and No. 3 full control switch T3；After described No. 1 full control switch T1 and No. 3 full control switch T3 connects, the branch circuit parallel connection to be formed of connecting with No. 2 full control switch T2 and power resistor；The photovoltaic generating module is connected in parallel to full control switching branches both ends by breaker；Several described subelements are together in series to form bridge arm, and each bridge arm is connected to correspondence system by reactor.
Description
Technical field
The utility model relates to new energy field more particularly to a kind of distributed photovoltaic power generation systems.
Background technique
Photovoltaic power generation is the important component of clean energy resource, due to the dispersibility of solar energy on the ground, photovoltaic power generation
System is substantially in distributed.Since the electric energy that current photovoltaic generating module generates is direct current, need to convert by current transformer
For exchange, then passing through transformer boosting access electric system.More current transformer is needed in this way, and is needed to configure certain
Stored energy capacitance just can guarantee the reliability and stability of electricity generation system.Therefore it studies a kind of suitable for distributed photovoltaic power generation system
System has economic benefit.
Utility model content
The purpose of the utility model is to provide.Therefore, the utility model uses following technical scheme.
The utility model provide it is a kind of can direct grid-connected photovoltaic generating system, be not necessarily to more energy storage device and current transformer,
Convenient for being uniformly controlled.
A kind of distributed photovoltaic power generation system, the system comprises several subelements and several reactors；The son
Unit includes full control switch, photovoltaic generating module, breaker and power resistor；The full control switch include No. 1 full control switch T1,
No. 2 full control switch T2 and No. 3 full control switch T3；After described No. 1 full control switch T1 and No. 3 full control switch T3 connects, with No. 2 full controls
Switch T2 and power resistor are connected the branch circuit parallel connection to be formed；The photovoltaic generating module is connected in parallel to full control switch branch by breaker
Road both ends；Several described subelements are together in series to form bridge arm, and each bridge arm is connected to correspondence system by reactor.
Preferably, three subelements are together in series to form bridge arm.
Preferably, totally 6 bridge arms up and down are formed on ABC three-phase.
Preferably, the full control switch can be IGBT or IGCT or IGET or GTO.
Preferably, the photovoltaic generating module can convert the solar into direct current energy.
The beneficial effects of the utility model are: the distributed photovoltaic power generation system of the utility model can send out the photovoltaic of distribution
Electric block coupled in series gets up, acquisition and the matched voltage of power grid, without transformer.
Detailed description of the invention
Fig. 1 is the utility model distributed photovoltaic power generation system structure diagram.
Description of symbols: 1, subelement；2, reactor；3, photovoltaic generating module；4, breaker；5, power resistor；6,1
Number full control switch T1；7, No. 2 full control switch T2；8, No. 3 full control switch T3.
Specific embodiment
The embodiments of the present invention are explained in detail below, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the utility model, and should not be understood as the limit to the utility model
System.
As shown in Figure 1, a kind of distributed photovoltaic power generation system, system includes several subelements 1 and several reactors
2；Subelement 1 includes full control switch, photovoltaic generating module 3, breaker 4 and power resistor 5；Full control switch includes that No. 1 full control is opened
Close the full control switch T3 8 of T1 6,2 full controls switch T2 7 and No. 3；The full control switch T3 8 of No. 1 full control switch T1 6 and No. 3 connects
Afterwards, it connects with No. 2 full control switch T2 7 and power resistor 5 branch circuit parallel connection of formation；Photovoltaic generating module 3 passes through breaker 4 simultaneously
It is coupled to full control switching branches both ends.Several subelements 1 are together in series to form bridge arm, and each bridge arm is connected to friendship by reactor 2
Galvanic electricity net.Each bridge arm is made of three subelements in the present embodiment, and totally 6 bridge arms, Mei Geqiao are formed up and down on ABC three-phase
Arm is connected to correspondence system by reactor.Full control switch can be IGBT(insulated gate bipolar transistor) or the integrated door of IGCT(
Pole commutated thyristor) or IGET(isolated-gate FET) or GTO(turn-off thyristor).Power resistor is a kind of resistant to flow
Horizontal higher resistance, has certain consumption residue active power ability.Photovoltaic generating module can convert the solar into
Direct current energy.
When normal work, No. 1 full control switch T1, No. 3 full control switch T3 are connected in turn, No. 2 full control switch T2 are closed, by light
Volt electricity generation module electric energy is sent to power grid.When a certain subelement failure, the subelement 3 full control switch T3 will be often connected the list
Member bypass.When AC network power surplus, No. 2 full control switch T2 will be connected with certain duty ratio and be used to consume instantaneous active function
Rate, to guarantee the subelement balance of voltage.
As described above, the only preferred embodiment of the utility model not is used to limit the reality of the utility model
Apply range, i.e., it is all according to equivalent changes and modifications made by the utility model, it is all that the utility model claims range is covered,
Here it no longer illustrates one by one.
Claims (5)
1. a kind of distributed photovoltaic power generation system, which is characterized in that the system comprises several subelements (1) and several electricity
Anti- device (2)；The subelement (1) includes full control switch, photovoltaic generating module (3), breaker (4) and power resistor (5)；It is described
Full control switch includes No. 1 full control switch T1(6), No. 2 full control switch T2(7) and No. 3 control switch T3(8 entirely)；Described No. 1 full control is opened
Close T1(6) and No. 3 full control switch T3(8) after series connection, control switch T2(7 entirely with No. 2) and power resistor (5) connect the branch of formation
It is in parallel；The photovoltaic generating module (3) is connected in parallel to full control switching branches both ends by breaker (4)；Several described subelements
(1) it is together in series to form bridge arm, each bridge arm is connected to AC network by reactor (2).
2. a kind of distributed photovoltaic power generation system according to claim 1, which is characterized in that three subelement (1) series connection
Get up to form bridge arm.
3. a kind of distributed photovoltaic power generation system according to claim 1, which is characterized in that formed on ABC three-phase
Under totally 6 bridge arms.
4. a kind of distributed photovoltaic power generation system according to claim 1, which is characterized in that the full control switch can be
IGBT or IGCT or IGET or GTO.
5. a kind of distributed photovoltaic power generation system according to claim 1, which is characterized in that the photovoltaic generating module can
To convert the solar into direct current energy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821014112.2U CN208401558U (en) | 2018-06-28 | 2018-06-28 | A kind of distributed photovoltaic power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821014112.2U CN208401558U (en) | 2018-06-28 | 2018-06-28 | A kind of distributed photovoltaic power generation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208401558U true CN208401558U (en) | 2019-01-18 |
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Family Applications (1)
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| CN201821014112.2U Active CN208401558U (en) | 2018-06-28 | 2018-06-28 | A kind of distributed photovoltaic power generation system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110661298A (en) * | 2019-10-28 | 2020-01-07 | 天津瑞能电气有限公司 | Medium-voltage variable-frequency wind power generation system and method based on cascade unit |
| CN113364413A (en) * | 2021-06-22 | 2021-09-07 | 湖南红太阳新能源科技有限公司 | Intelligent photovoltaic topology transformation power optimization system and control method thereof |
| CN113364413B (en) * | 2021-06-22 | 2024-04-30 | 湖南红太阳新能源科技有限公司 | Intelligent photovoltaic topology conversion power optimization system and control method thereof |
-
2018
- 2018-06-28 CN CN201821014112.2U patent/CN208401558U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110661298A (en) * | 2019-10-28 | 2020-01-07 | 天津瑞能电气有限公司 | Medium-voltage variable-frequency wind power generation system and method based on cascade unit |
| CN113364413A (en) * | 2021-06-22 | 2021-09-07 | 湖南红太阳新能源科技有限公司 | Intelligent photovoltaic topology transformation power optimization system and control method thereof |
| CN113364413B (en) * | 2021-06-22 | 2024-04-30 | 湖南红太阳新能源科技有限公司 | Intelligent photovoltaic topology conversion power optimization system and control method thereof |
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