CN108123484A - A kind of accumulation energy type photovoltaic grid-connected generating control system - Google Patents
A kind of accumulation energy type photovoltaic grid-connected generating control system Download PDFInfo
- Publication number
- CN108123484A CN108123484A CN201611083021.XA CN201611083021A CN108123484A CN 108123484 A CN108123484 A CN 108123484A CN 201611083021 A CN201611083021 A CN 201611083021A CN 108123484 A CN108123484 A CN 108123484A
- Authority
- CN
- China
- Prior art keywords
- electrically connected
- control system
- generating control
- boost converters
- energy type
- Prior art date
- 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.)
- Pending
Links
- 238000009825 accumulation Methods 0.000 title claims abstract description 14
- 230000005611 electricity Effects 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 230000008030 elimination Effects 0.000 claims 1
- 238000003379 elimination reaction Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010248 power generation Methods 0.000 description 3
- 238000004146 energy storage Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
Classifications
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- H02J3/385—
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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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/30—Electrical components
- H02S40/32—Electrical components comprising DC/AC inverter means associated with the PV module itself, e.g. AC modules
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/30—Electrical components
- H02S40/38—Energy storage means, e.g. batteries, structurally associated with PV modules
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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
-
- 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
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
Abstract
The invention discloses a kind of accumulation energy type photovoltaic grid-connected generating control systems, and including photovoltaic array, boost converters, DC/AC, DC/DC, inductance filter, accumulator and three phase network, the photovoltaic array is electrically connected with boost converters；The boost converters are electrically connected with DC/AC；The DC/AC is electrically connected with inductance filter；The inductance filter is electrically connected with three phase network；The boost converters are electrically connected with DC/DC；The DC/DC is electrically connected with accumulator.The advantageous effect of the invention is to realize that grid-connected power stabilizes control and the energy that photovoltaic array is sent can be stored in electric network fault so that the utilization ratio of luminous energy is high.
Description
Technical field
The invention belongs to technical field of photovoltaic power generation, and in particular to a kind of accumulation energy type photovoltaic grid-connected generating control system.
Background technology
Photovoltaic generation is pollution-free, noiseless, operating cost is low, is preferable sustainable energy, good development prospect.According to pre-
Survey, be up to 13.5% to ratio of the year two thousand fifty solar energy in energy resource structure, be following fossil energy main alternative energy source it
One.By development for many years, photovoltaic generation is just gradually from past small-scale off-grid system, to large-scale grid connection power generation direction hair
Exhibition.Parallel network power generation technology based on maximal power tracing control and the control of various parallel network reverses has obtained widely studied.
Current photovoltaic grid-connected generating control system, it is impossible to realize grid-connected power stabilize control and in electric network fault not
The utilization ratio that energy that photovoltaic array sends and luminous energy can be stored is low.
Therefore, a kind of accumulation energy type photovoltaic grid-connected generating control system is invented to be very necessary.
The content of the invention
It is an object of the invention to provide a kind of accumulation energy type photovoltaic grid-connected generating control system, to solve above-mentioned background technology
It is middle to propose current photovoltaic grid-connected generating control system, it is impossible to realize that grid-connected power stabilizes control and cannot in electric network fault
The problem of utilization ratio of the energy that sends of storage photovoltaic array and luminous energy is low.
To achieve the above object, the present invention provides following technical solution：A kind of accumulation energy type photovoltaic grid-connected generating control system,
Including photovoltaic array, boost converters, DC/AC, DC/DC, inductance filter, accumulator and three phase network, the photovoltaic array
It is electrically connected with boost converters；The boost converters are electrically connected with DC/AC；The DC/AC and inductance filter electricity
Property connection；The inductance filter is electrically connected with three phase network；The boost converters are electrically connected with DC/DC；It is described
DC/DC is electrically connected with accumulator.
Further, the DC/AC is the inverter that a kind of direct current is converted into exchange.
Further, the DC/DC is using a kind of straight for variable DC voltage by fixed DC voltage conversion
Flow chopper.
Further, the filter circuit that the inductance filter is made of capacitance, inductance and resistance, and inductance filter can
It is effectively filtered out with the frequency beyond the frequency point to specific frequency in power cord or the frequency point, obtains the electricity of a specific frequency
Source signal eliminates the power supply signal after a specific frequency.
The technique effect and advantage of the present invention：The accumulation energy type photovoltaic grid-connected generating control system, by the way that Boost is set to convert
Device is mainly used for realizing maximal power tracing, while the relatively low voltage of photovoltaic array is raised to higher voltage, makes for DC/AC
With improving the utilization rate of luminous energy；DC/AC is used to implement parallel network reverse;The energy storage being made of two-way DC/DC converters and accumulator
System is used to implement the energy that grid-connected power stabilizes control and storage photovoltaic array is sent during electric network fault, too high-light-energy
Utilization rate.
Description of the drawings
Fig. 1 is the structural diagram of the present invention.
In figure：Photovoltaic array；Boost converters；DC/AC；DC/DC；Inductance filter；Accumulator；Three phase network.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment belongs to the scope of protection of the invention.
The present invention provides a kind of accumulation energy type photovoltaic grid-connected generating control system as shown in Figure 1, including photovoltaic array,
Boost converters, DC/AC, DC/DC, inductance filter, accumulator and three phase network, the photovoltaic array and boost converters
It is electrically connected；The boost converters are electrically connected with DC/AC；The DC/AC is electrically connected with inductance filter；The electricity
Feel wave filter to be electrically connected with three phase network；The boost converters are electrically connected with DC/DC；The DC/DC and accumulator electricity
Property connection.
Further, the DC/AC is the inverter that a kind of direct current is converted into exchange.
Further, the DC/DC is using a kind of straight for variable DC voltage by fixed DC voltage conversion
Flow chopper.
Further, the filter circuit that the inductance filter is made of capacitance, inductance and resistance, and inductance filter can
It is effectively filtered out with the frequency beyond the frequency point to specific frequency in power cord or the frequency point, obtains the electricity of a specific frequency
Source signal eliminates the power supply signal after a specific frequency.
Operation principle：The accumulation energy type photovoltaic grid-connected generating control system, by the way that Boost is set to be mainly used for realizing
Maximal power tracing, while the relatively low voltage of photovoltaic array is raised to higher voltage, it is used for DC/AC, improves the profit of luminous energy
With rate；DC/AC is used to implement parallel network reverse;The energy-storage system being made of two-way DC/DC converters and accumulator is used to implement simultaneously
The utilization rate of energy, too high-light-energy that storage photovoltaic array is sent when net power stabilizes control and electric network fault.
Using technical solution of the present invention or those skilled in the art under the inspiration of technical solution of the present invention, if
Similar technical solution is counted out, and reaches above-mentioned technique effect, is to fall into protection scope of the present invention.
Claims (4)
1. a kind of accumulation energy type photovoltaic grid-connected generating control system, including photovoltaic array, boost converters, DC/AC, DC/DC, electricity
Feel wave filter, accumulator and three phase network, it is characterised in that：The photovoltaic array is electrically connected with boost converters；It is described
Boost converters are electrically connected with DC/AC；The DC/AC is electrically connected with inductance filter；The inductance filter and three-phase
Power grid is electrically connected；The boost converters are electrically connected with DC/DC；The DC/DC is electrically connected with accumulator.
2. a kind of accumulation energy type photovoltaic grid-connected generating control system according to claim 1, it is characterised in that：The DC/AC
It is the inverter that a kind of direct current is converted into exchange.
3. a kind of accumulation energy type photovoltaic grid-connected generating control system according to claim 1, it is characterised in that：The DC/DC
Using it is a kind of by fixed DC voltage conversion be variable DC voltage dc chopper.
4. a kind of accumulation energy type photovoltaic grid-connected generating control system according to claim 1, it is characterised in that：The inductance filter
The filter circuit that ripple device is made of capacitance, inductance and resistance, and inductance filter can be to the frequency of specific frequency in power cord
Frequency beyond point or the frequency point is effectively filtered out, and obtains one specific frequency of power supply signal or elimination of a specific frequency
Power supply signal after rate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611083021.XA CN108123484A (en) | 2016-11-30 | 2016-11-30 | A kind of accumulation energy type photovoltaic grid-connected generating control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611083021.XA CN108123484A (en) | 2016-11-30 | 2016-11-30 | A kind of accumulation energy type photovoltaic grid-connected generating control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108123484A true CN108123484A (en) | 2018-06-05 |
Family
ID=62225502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611083021.XA Pending CN108123484A (en) | 2016-11-30 | 2016-11-30 | A kind of accumulation energy type photovoltaic grid-connected generating control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108123484A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104810858A (en) * | 2015-05-27 | 2015-07-29 | 广西大学 | Control method for grid-connected power generation system of optical storage microgrid |
| CN105244904A (en) * | 2014-06-19 | 2016-01-13 | 国网山西省电力公司电力科学研究院 | Stability control system of photovoltaic grid-connected power generation system |
| CN105846458A (en) * | 2016-04-11 | 2016-08-10 | 特变电工新疆新能源股份有限公司 | Electronic power transformer array based high voltage photovoltaic grid-connected power generation system |
-
2016
- 2016-11-30 CN CN201611083021.XA patent/CN108123484A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105244904A (en) * | 2014-06-19 | 2016-01-13 | 国网山西省电力公司电力科学研究院 | Stability control system of photovoltaic grid-connected power generation system |
| CN104810858A (en) * | 2015-05-27 | 2015-07-29 | 广西大学 | Control method for grid-connected power generation system of optical storage microgrid |
| CN105846458A (en) * | 2016-04-11 | 2016-08-10 | 特变电工新疆新能源股份有限公司 | Electronic power transformer array based high voltage photovoltaic grid-connected power generation system |
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