CN104682424A - Distributed type photovoltaic grid connected power generation system - Google Patents
Distributed type photovoltaic grid connected power generation system Download PDFInfo
- Publication number
- CN104682424A CN104682424A CN201310639815.XA CN201310639815A CN104682424A CN 104682424 A CN104682424 A CN 104682424A CN 201310639815 A CN201310639815 A CN 201310639815A CN 104682424 A CN104682424 A CN 104682424A
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- China
- Prior art keywords
- grid
- photovoltaic
- power
- battery array
- controller
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- 238000010248 power generation Methods 0.000 title abstract description 6
- 238000001514 detection method Methods 0.000 claims abstract description 5
- 230000000694 effects Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
Classifications
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- H02J3/383—
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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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/50—Energy storage in industry with an added climate change mitigation effect
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention discloses a distributed type photovoltaic grid connected power generation system. The distributed type photovoltaic grid connected power generation system is characterized by comprising a main controller and a photovoltaic battery array, wherein one path of the output of the photovoltaic battery array is connected with a storage battery by a DC/DC (Direct Current/Direct Current) converter and a charging switch; the other path of the output of the photovoltaic battery array is connected with a power grid by an inversion controller, an inverter, a power distribution switch and a power grid detection device; the input end of the main controller is connected with the photovoltaic battery array and the power grid detection device; the output end of the main controller is connected with the charring switch, the inversion controller and a power distribution network switch; the output end of the main controller is further connected with the DC/DC converter for adjusting the charging power of a storage battery. The distributed type photovoltaic grid connected power generation system can guarantee the stability of a power supply; the power supply is flexible, energy sources are saved, the control reliability is high, the working stability is high, the service life is long, the practicability is high, the use effect is good and the popularization and application are convenient to realize.
Description
Technical field
The present invention relates to technical field of photovoltaic power generation, especially relate to a kind of distributed photovoltaic grid-connected system.
Background technology
Along with the develop rapidly of human civilization, lack of energy and environmental pollution states are day by day serious in recent years, regenerative resource receives global concern gradually, solar energy is inexhaustible clean energy resource, the photovoltaic generation industry utilizing solar energy also attention naturally, solar energy power generating industry one of fastest-rising new high-tech industry in the world since being the eighties in 20th century.
Because photovoltaic power generation grid-connecting lacks administrative provisions, technical standard imperfection, national policy and incentive measure lack the compensation to power grid enterprises' overall economic efficiency, greatly have impact on the healthy and orderly development of photovoltaic generation industry and power grid enterprises; Simultaneously, intermittence, periodicity and randomness that photovoltaic generation is exerted oneself, add the factor such as grid-connected inverters, island effect, have impact on the electrical network quality of power supply, electric quantity metering charging, power supply reliability, along with the extensive access electrical network of Large Copacity grid-connected photovoltaic power station and distributed photovoltaic architecture-integral power supply, to the planning of electrical network, run control and management and bring series of problems; China is also in the stage photovoltaic early stage of development, the development of grid-connected system will be following trend, for the open circuit voltage of the solar cell in photovoltaic parallel in system and short circuit current to a great extent by the impact of intensity of sunshine and temperature, system works also can be therefore fluid, causes system effectiveness to reduce.
Summary of the invention
Technical problem to be solved by this invention is that, for above-mentioned deficiency of the prior art, provide a kind of distributed photovoltaic grid-connected system, its structure is simple, reasonable in design, it is convenient to realize, and uses simple operation, can ensure the stability of powering, power supply is flexible, energy savings, control reliability is high, job stability is high, long service life, 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 distributed photovoltaic grid-connected system, it is characterized in that: comprise master controller and the photovoltaic battery array for solar energy being converted to electric energy, described photovoltaic battery array exports to lead up to and to connect with storage battery for the DC/DC transducer and charge switch high-voltage dc voltage being converted to low-voltage dc voltage, described photovoltaic battery array exports the inverter controller of separately leading up to for control inverter, for direct current being converted to the inverter of alternating current, for controlling the panel switches of grid charging switch and connecting with electrical network for the electrical net detect device of detection of grid voltage status, the input of described master controller is connected to photovoltaic battery array and electrical net detect device, the output of described master controller is connected to charge switch, inverter controller and power distribution network switch, described master controller output is also connected to for the DC/DC transducer for adjusting charge in batteries power.
Above-mentioned a kind of distributed photovoltaic grid-connected system, is characterized in that: described master controller is MPPT controller.
The present invention compared with prior art has the following advantages:
1, the present invention is reasonable in design, and it is convenient to realize, and uses simple operation.
2, the present invention can ensure the stability of power supply, and power supply is flexible, energy savings.
3, control reliability of the present invention is high, and job stability 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 uses simple operation, can ensure the stability of powering, power supply is flexible, energy savings, and control reliability high, job stability is high, long service life, practical, 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-master controller; 2-photovoltaic battery array; 3-DC/DC transducer;
4-charge switch; 5-storage battery; 6-inverter controller;
7-inverter; 8-power distribution network switch; 9-electrical net detect device;
10-electrical network.
Embodiment
As shown in Figure 1, the present invention includes master controller 1 and the photovoltaic battery array 2 for solar energy being converted to electric energy, described photovoltaic battery array 2 exports to lead up to and to connect with storage battery 5 for the DC/DC transducer 3 and charge switch 4 high-voltage dc voltage being converted to low-voltage dc voltage, described photovoltaic battery array 2 exports the inverter controller 6 of separately leading up to for control inverter 7, for direct current being converted to the inverter 7 of alternating current, for controlling the panel switches 8 of grid charging switch and connecting with electrical network 10 for the electrical net detect device 9 of detection of grid voltage status, the input of described master controller 1 is connected to photovoltaic battery array 2 and electrical net detect device 9, the output of described master controller 1 is connected to charge switch 4, inverter controller 6 and power distribution network switch 8, described master controller output is also connected to for the DC/DC transducer for adjusting charge in batteries power.
As shown in Figure 1, in the present embodiment, described master controller is MPPT controller.
Operation principle of the present invention and the course of work are: photovoltaic battery array 2 sends the electric energy of a conversion part to electrical network 10 by inverter 7, a part sends storage battery 5 to by DC/DC transducer 3 and stores, the quality of power supply that master controller 1 pair of photovoltaic battery array 2 sends detects, and adjust electric energy power thus so that accumulators 5 charges, and controlled by the charging of charge switch 4 pairs of storage batterys 5; Master controller 1 also controls inverter controller 6 according to the quality of power supply simultaneously, detects the voltage after via inverter 7 inversion whether reach the open and close that line voltage requires to control power distribution network switch 8 by electrical net detect device 9.
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 (2)
1. a distributed photovoltaic grid-connected system, it is characterized in that: comprise master controller (1) and the photovoltaic battery array (2) for solar energy being converted to electric energy, described photovoltaic battery array (2) exports to lead up to and to connect with storage battery (5) for the DC/DC transducer (3) and charge switch (4) high-voltage dc voltage being converted to low-voltage dc voltage, described photovoltaic battery array (2) exports the inverter controller (6) of separately leading up to for control inverter (7), for direct current being converted to the inverter (7) of alternating current, for controlling the panel switches (8) of grid charging switch and connecting with electrical network (10) for the electrical net detect device (9) of detection of grid voltage status, the input of described master controller (1) is connected to photovoltaic battery array (2) and electrical net detect device (9), the output of described master controller (1) is connected to charge switch (4), inverter controller (6) and power distribution network switch (8), described master controller (1) output is also connected to for the DC/DC transducer (3) for adjusting storage battery (5) charge power.
2. according to a kind of distributed photovoltaic grid-connected system according to claim 1, it is characterized in that: described master controller (1) is MPPT controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310639815.XA CN104682424A (en) | 2013-11-30 | 2013-11-30 | Distributed type photovoltaic grid connected power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310639815.XA CN104682424A (en) | 2013-11-30 | 2013-11-30 | Distributed type photovoltaic grid connected power generation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104682424A true CN104682424A (en) | 2015-06-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310639815.XA Pending CN104682424A (en) | 2013-11-30 | 2013-11-30 | Distributed type photovoltaic grid connected power generation system |
Country Status (1)
| Country | Link |
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| CN (1) | CN104682424A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109823504A (en) * | 2019-02-28 | 2019-05-31 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | A kind of fan wing propulsion ground effect ship with solar power |
| CN112290880A (en) * | 2020-10-19 | 2021-01-29 | 哈尔滨理工大学 | Distributed photovoltaic power generation monitoring device based on ARM |
-
2013
- 2013-11-30 CN CN201310639815.XA patent/CN104682424A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109823504A (en) * | 2019-02-28 | 2019-05-31 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | A kind of fan wing propulsion ground effect ship with solar power |
| CN112290880A (en) * | 2020-10-19 | 2021-01-29 | 哈尔滨理工大学 | Distributed photovoltaic power generation monitoring device based on ARM |
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| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150603 |