CN104682376A - Direct current microgrid control system - Google Patents
Direct current microgrid control system Download PDFInfo
- Publication number
- CN104682376A CN104682376A CN201310627071.XA CN201310627071A CN104682376A CN 104682376 A CN104682376 A CN 104682376A CN 201310627071 A CN201310627071 A CN 201310627071A CN 104682376 A CN104682376 A CN 104682376A
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- CN
- China
- Prior art keywords
- direct current
- generation module
- electricity generation
- converted
- transducer
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
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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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses a direct current microgrid control system, which comprises a power generating module and a load, wherein the power generating module is connected with the load through a direct current bus, the power generating module comprises a photovoltaic power generation module, a fan power generating module, a fuel battery power generating module and a micro-gas turbine power generating module, the power generating module is also connected with an energy storage device, the energy storage device is connected with the direct current bus through a fourth DC/DC (direct current to direct current) converter, an electric grid is connected with the direct current bus through a first AC/DC (alternating current to direct current) converter used for converting alternating current into direct current, and the direct current bus is used or connecting the load with an inverter used for converting the direct current into the alternating current. The direct current microgrid control system has the advantages that electric energy can be provided for the load at different voltage stage, a power supply system is stable and reliable, the energy sources are saved, the practicability is high, the use effect is good, and the popularization and the use are convenient.
Description
Technical field
The present invention relates to power supply technical field, especially relate to a kind of direct-current micro-grid control system.
Background technology
The appearance of distributed power generation solves non-renewable energy resources very well and day by day reduces the problem that there is drawback with large-scale power grid centrally connected power supply, although distributed power source has many good qualities, but when fault, distributed power source must excise at once from network, and this usefulness that just greatly limit distributed power source plays, and the appearance of microgrid has then coordinated distributed power source composition well, can be incorporated into the power networks with bulk power grid, when bulk power grid breaks down, piconet island runs, independently for load is powered; When network configuration changes or breaks down in microgrid, how to coordinate relation between each micro battery, so that ensure under any circumstance can to load quality supply, this difficult point is exactly the control technology of microgrid; Being incorporated into the power networks of microgrid, have impact on major network quality to a certain extent, create such as voltage fluctuation, dodge limit etc., the requirement of this kind of sensitive equipment of computer, microprocessor to the quality of power supply is harsher, even the Voltage Drop in several cycle all will affect the normal work of this kind equipment, huge economic loss is caused, therefore, to the control of the quality of power supply with improve and just seem particularly important to society.
Summary of the invention
Technical problem to be solved by this invention is for above-mentioned deficiency of the prior art, there is provided a kind of direct-current micro-grid control system, its structure is simple, reasonable in design, it is convenient to realize, use simple operation, can provide electric energy to the load of different electric pressure, electric power system is reliable and stable, energy savings, practical, result of use is good, is convenient to promote the use of.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of direct-current micro-grid control system, it is characterized in that: comprise electricity generation module and load, described electricity generation module is connected with load by DC bus, described electricity generation module comprises photovoltaic generating module, blower fan electricity generation module, fuel cell power generation module and miniature combustion engine electricity generation module, described photovoltaic generating module is by forming for the photovoltaic module that solar energy is converted to electric energy and the DC/DC transducer three that is used for high voltage direct current to be converted to low-voltage DC of connecting successively, described blower fan electricity generation module by connect successively for being the blower fan of electric energy by Wind resource change and being used for alternating current being converted to galvanic AC/DC transducer two and forming, described fuel cell power generation module is made up of the fuel cell that chemical energy can be converted to electric energy by fuel combustion connected successively and the DC/DC transducer two that is used for high voltage direct current to be converted to low-voltage DC, described miniature combustion engine electricity generation module by connect successively for being that the miniature combustion engine of electric energy and DC/DC transducer one are formed by fuel chemical energy, described electricity generation module also connects with energy storage device, described energy storage device is connected with DC bus by DC/DC transducer four, described electrical network is by connecting with DC bus for alternating current being converted to galvanic AC/DC transducer one, and described DC bus is connected with load by the inverter for direct current being converted to alternating current.
The present invention compared with prior art has the following advantages:
1, structure of the present invention is simple, reasonable in design, and it is convenient to realize.
2, the present invention can provide electric energy to the load of different electric pressure, and electric power system is reliable and stable, energy savings.
3, job stability of the present invention is high, long service life.
4, of the present invention practical, result of use is good, is convenient to promote the use of.
In sum, structure of the present invention is simple, reasonable in design, and it is convenient to realize, and use simple operation, can provide electric energy to the load of different electric pressure, electric power system is reliable and stable, energy savings, and long service life is practical, and result of use is good, is convenient to promote the use of.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is theory diagram of the present invention.
Description of reference numerals:
1-electrical network; 2-miniature combustion engine; 3-fuel cell;
4-photovoltaic module; 5-blower fan; 6-energy storage device;
7-AC/DC transducer one; 8-DDC/DC transducer one; 9-DC/DC transducer two;
10-DC/DC transducer three; 11-AC/DC transducer two; 12-DC/DC transducer four;
13-inverter; 14-load.
Embodiment
As shown in Figure 1, the present invention includes electricity generation module and load 14, described electricity generation module is connected with load 14 by DC bus, described electricity generation module comprises photovoltaic generating module, blower fan electricity generation module, fuel cell power generation module and miniature combustion engine electricity generation module, described photovoltaic generating module is by forming for the photovoltaic module 4 that solar energy is converted to electric energy and the DC/DC transducer 3 10 that is used for high voltage direct current to be converted to low-voltage DC of connecting successively, described blower fan electricity generation module by connect successively for being the blower fan 5 of electric energy by Wind resource change and being used for alternating current being converted to galvanic AC/DC transducer 2 11 and forming, described fuel cell power generation module is made up of the fuel cell 3 that chemical energy can be converted to electric energy by fuel combustion connected successively and the DC/DC transducer 29 that is used for high voltage direct current to be converted to low-voltage DC, described miniature combustion engine electricity generation module by connect successively for being that the miniature combustion engine 2 of electric energy and DC/DC transducer 1 are formed by fuel chemical energy, described electricity generation module also connects with energy storage device 6, described energy storage device 6 is connected with DC bus by DC/DC transducer 4 12, described electrical network is by connecting with DC bus for alternating current being converted to galvanic AC/DC transducer 1, and described DC bus is connected with load 14 by the inverter 13 for direct current being converted to alternating current.
The above; it is only preferred embodiment of the present invention; not the present invention is imposed any restrictions, every above embodiment is done according to the technology of the present invention essence any simple modification, change and equivalent structure change, all still belong in the protection range of technical solution of the present invention.
Claims (1)
1. a direct-current micro-grid control system, it is characterized in that: comprise electricity generation module and load (14), described electricity generation module is connected with load (14) by DC bus, described electricity generation module comprises photovoltaic generating module, blower fan electricity generation module, fuel cell power generation module and miniature combustion engine electricity generation module, described photovoltaic generating module by connect successively for solar energy being converted to the photovoltaic module (4) of electric energy and the DC/DC transducer three (10) for high voltage direct current being converted to low-voltage DC is formed, described blower fan electricity generation module by connect successively for being the blower fan (5) of electric energy by Wind resource change and forming for alternating current being converted to galvanic AC/DC transducer two (11), described fuel cell power generation module by connect successively by fuel combustion chemical energy can be converted to the fuel cell (3) of electric energy and the DC/DC transducer two (9) for high voltage direct current being converted to low-voltage DC is formed, described miniature combustion engine electricity generation module by connect successively for being that the miniature combustion engine (2) of electric energy and DC/DC transducer one (8) are formed by fuel chemical energy, described electricity generation module also connects with energy storage device (6), described energy storage device (6) is connected with DC bus by DC/DC transducer four (12), described electrical network is by connecting with DC bus for alternating current being converted to galvanic AC/DC transducer one (7), and described DC bus is connected with load (14) by the inverter (13) for direct current being converted to alternating current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310627071.XA CN104682376A (en) | 2013-11-28 | 2013-11-28 | Direct current microgrid control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310627071.XA CN104682376A (en) | 2013-11-28 | 2013-11-28 | Direct current microgrid control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104682376A true CN104682376A (en) | 2015-06-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310627071.XA Pending CN104682376A (en) | 2013-11-28 | 2013-11-28 | Direct current microgrid control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104682376A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106253261A (en) * | 2016-08-17 | 2016-12-21 | 上海电机学院 | A kind of distributed mixed DC micro-grid system |
| CN107336625A (en) * | 2017-06-27 | 2017-11-10 | 上海中弗新能源科技有限公司 | A kind of super charging system of gas station's new energy |
-
2013
- 2013-11-28 CN CN201310627071.XA patent/CN104682376A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106253261A (en) * | 2016-08-17 | 2016-12-21 | 上海电机学院 | A kind of distributed mixed DC micro-grid system |
| CN107336625A (en) * | 2017-06-27 | 2017-11-10 | 上海中弗新能源科技有限公司 | A kind of super charging system of gas station's new energy |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150603 |