CN205992791U - Grid-connected and off-grid photovoltaic power generation switching system - Google Patents
Grid-connected and off-grid photovoltaic power generation switching system Download PDFInfo
- Publication number
- CN205992791U CN205992791U CN201620623497.7U CN201620623497U CN205992791U CN 205992791 U CN205992791 U CN 205992791U CN 201620623497 U CN201620623497 U CN 201620623497U CN 205992791 U CN205992791 U CN 205992791U
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- Prior art keywords
- outfan
- electrically connected
- grid
- photovoltaic
- network
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- 238000010248 power generation Methods 0.000 title abstract description 3
- 238000007599 discharging Methods 0.000 claims description 7
- 230000000295 complement effect Effects 0.000 abstract 1
- 238000009434 installation Methods 0.000 abstract 1
- 239000002184 metal Substances 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical group [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 125000004437 phosphorous atom Chemical group 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
Classifications
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/20—Climate change mitigation technologies for sector-wide applications using renewable energy
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The utility model discloses a grid-connected and off-grid photovoltaic power generation switching system, including solar PV modules and photovoltaic controller, solar PV modules's output electric connection is in photovoltaic controller's input, photovoltaic controller's output electric connection has the complementary ware of scene, the output of off-grid inverter still electric connection has single chip microcomputer control system, grid-connected inverter's output electric connection has the switch board group, the output electric connection of switch board group is in single chip microcomputer control system's input, the output of switch board group still electric connection has alternating load. The grid-connected system can avoid using a storage battery, greatly saves the operation and installation and use cost, can sell redundant electric power to an electric power company, can adopt the energy stored by the storage battery of the off-line power grid to supply electric power when the public power grid is powered off, and ensures the stable power consumption of residents and enterprises.
Description
Technical field
This utility model is related to technical field of photovoltaic power generation, specially a kind of grid-connected and off-network photovoltaic generation switched system.
Background technology
The cardinal principle of photovoltaic generation is the photoelectric effect of quasiconductor.When photon irradiation is on metal, its energy is permissible
All absorbed by certain electronics in metal, the energy of Electron absorption is sufficiently large, metal inside gravitation can be overcome to do work, leave metal
Surface escapes, and becomes photoelectron.Silicon atom has 4 outer-shell electrons, if being mixed with the former of 5 outer-shell electrons in pure silicon
Son such as phosphorus atoms, just becomes N-type semiconductor；If being mixed with the atom such as boron atom of 3 outer-shell electrons in pure silicon, form p-type
Quasiconductor.When p-type and N type junction are combined, contact surface will form electric potential difference, becomes solaode.Work as solar irradiation
After being mapped to P-N junction, hole is moved from P polar region toward N polar region, and electronics is moved from N polar region to P polar region, forms electric current.Photoelectric effect
It is exactly that illumination makes to produce the phenomenon of potential difference with metal between the different parts that inhomogeneos semiconductor or quasiconductor be combined.It is first
Be electronics is converted into by photon (light wave), light energy is converted into the process of electric flux；Secondly, it is to form voltage course.
Off-grid system needs, using accumulator and solar charging discharging controller, increased cost, general photovoltaic off-grid
The quotation of system is more than 1.5 times of quotation in solar grid-connected system；Service lifetime of accumulator is typically at 5 years about (with filling
The depth of electric discharge is different, and the life-span of accumulator is different, and under the use condition of daily discharge and recharge, the life-span of accumulator is usually no more than
3-5), this is very big investment when changing battery, and also needs to periodic maintenance, increased workload.
This is accomplished by being combined together off-grid system and grid-connected system, when mains failure, can draw from accumulator battery
Take supply of electric power, do not interfere with the electricity consumption of resident and enterprise.
Utility model content
The purpose of this utility model is to provide a kind of grid-connected and off-network photovoltaic generation switched system, to solve above-mentioned background
The problem proposing in technology.
For achieving the above object, this utility model provides following technical scheme：A kind of grid-connected and off-network photovoltaic generation switches
System, including solar photovoltaic assembly and photovoltaic controller, the outfan of described solar photovoltaic assembly is electrically connected at photovoltaic
The input of controller, the outfan of described photovoltaic controller is electrically connected with wind light mutual complementing device, described wind light mutual complementing device defeated
Go out end and be electrically connected with off-network inverter, the outfan of described off-network inverter is electrically connected with charging-discharging controller, described fill
The outfan of discharge controller is electrically connected with accumulator battery, and the outfan of described off-network inverter is also electrically connected with single-chip microcomputer
Control system, the outfan of described single-chip computer control system is electrically connected with mode switch element, described mode switch element
Outfan has been electrically connected with DC load and electric energy tariffing module, and the outfan of described electric energy tariffing module is electrically connected with
Public electric wire net, the outfan of described solar photovoltaic assembly is also electrically connected with disconnect switch, the outfan of described disconnect switch
It is electrically connected with photovoltaic conflux, the outfan of described photovoltaic conflux is electrically connected with DC-DC converter, described DC-DC converter
Outfan be electrically connected with combining inverter, the outfan of described combining inverter is electrically connected with power distribution cabinet group, described joins
The outfan of electric cabinet group is electrically connected at the input of single-chip computer control system, and the outfan of described power distribution cabinet group is also electrically connected with
There is AC load.
Preferably, the outfan of described photovoltaic controller is also electrically connected with measure voltage ＆amp.
Preferably, the outfan of described charging-discharging controller is also electrically connected with super-charge super-discharge alarm unit, and overcharges
Put and buzzer alarm is installed inside alarm unit.
Preferably, the outfan of described photovoltaic conflux is also electrically connected with power back-off, and the outfan electricity of power back-off
Property is connected to the input of combining inverter.
Compared with prior art, the beneficial effects of the utility model are：This grid-connected and off-network photovoltaic generation switched system, and
Net system can be exempted and used accumulator battery, greatly save operation and install and use cost, excrescent electric power also can be sold to electric power
Company, when public electric wire net has a power failure, can carry out supply of electric power using the energy of offline electrical network accumulator battery storage it is ensured that resident
Steady with business electrical.
Brief description
Fig. 1 is this utility model system block diagram.
In figure：1 solar photovoltaic assembly, 2 photovoltaic controllers, 3 wind light mutual complementing devices, 4 off-network inverters, 5 charge and discharge control
Device, 6 accumulator batteries, 7 super-charge super-discharge alarm unit, 71 buzzer alarm, 8 measure voltage ＆amps, 9 disconnect switchs, 10 light
Volt conflux, 11DC-DC changer, 12 combining inverters, 13 power distribution cabinet groups, 14 single-chip computer control systems, 15 mode switch element,
16 DC loads, 17 electric energy tariffing modules, 18 public electric wire nets, 19 power back-offs, 20 AC loads.
Specific embodiment
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out
Clearly and completely description is it is clear that described embodiment is only a part of embodiment of this utility model rather than whole
Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under the premise of making creative work
The every other embodiment being obtained, broadly falls into the scope of this utility model protection.
Refer to Fig. 1, this utility model provides a kind of technical scheme：A kind of grid-connected and off-network photovoltaic generation switched system,
Including solar photovoltaic assembly 1 and photovoltaic controller 2, the outfan of described solar photovoltaic assembly 1 is electrically connected at photovoltaic control
The input of device 2 processed, the outfan of described photovoltaic controller 2 is electrically connected with wind light mutual complementing device 3, described wind light mutual complementing device 3
Outfan is electrically connected with off-network inverter 4, and the outfan of described off-network inverter 4 is electrically connected with charging-discharging controller 5, institute
The outfan stating charging-discharging controller 5 is electrically connected with accumulator battery 6, and the outfan of described off-network inverter 4 is also electrically connected with
There is single-chip computer control system 14, the outfan of described single-chip computer control system 14 is electrically connected with mode switch element 15, described
The outfan of mode switch element 15 has been electrically connected with DC load 16 and electric energy tariffing module 17, described electric energy tariffing mould
The outfan of block 17 is electrically connected with public electric wire net 18, and the outfan of described solar photovoltaic assembly 1 is also electrically connected with open circuit
Switch 9, the outfan of described disconnect switch 9 is electrically connected with photovoltaic conflux 10, and the outfan of described photovoltaic conflux 10 electrically connects
It is connected to DC-DC converter 11, the outfan of described DC-DC converter 11 is electrically connected with combining inverter 12, described grid-connected inverse
The outfan becoming device 12 is electrically connected with power distribution cabinet group 13, and the outfan of described power distribution cabinet group 13 is electrically connected at Single-chip Controlling
The input of system 14, the outfan of described power distribution cabinet group 13 is also electrically connected with AC load 20.
The outfan of described photovoltaic controller 2 is also electrically connected with measure voltage ＆amp 8.Described charging-discharging controller
5 outfan is also electrically connected with super-charge super-discharge alarm unit 7, and is provided with buzzing alarming inside super-charge super-discharge alarm unit 7
Device 71.The outfan of described photovoltaic conflux 10 is also electrically connected with power back-off 19, and the outfan of power back-off 19 electrically connects
It is connected to the input of combining inverter 12.
Specifically, during use, off-grid system and grid-connected system carry out free switching by mode switch element 15 to system,
Directly powered using grid-connected system in normal electricity consumption, and by excrescent electric power and in public electric wire net 18, using electric energy tariffing mould
Block 17 can achieve surplus, in public electric wire net power-off, by mode switch element 15, system is switched to off-network, and utilizes electric power storage
Pond group 6 continued power it is ensured that resident and business electrical steady.
While there has been shown and described that embodiment of the present utility model, for the ordinary skill in the art,
It is appreciated that these embodiments can be carried out with multiple changes in the case of without departing from principle of the present utility model and spirit, repair
Change, replace and modification, scope of the present utility model is defined by the appended claims and the equivalents thereof.
Claims (4)
1. a kind of grid-connected and off-network photovoltaic generation switched system, including solar photovoltaic assembly (1) and photovoltaic controller (2), institute
State solar photovoltaic assembly (1) outfan be electrically connected at photovoltaic controller (2) input it is characterised in that：Described light
The outfan of volt controller (2) is electrically connected with wind light mutual complementing device (3), and the outfan of described wind light mutual complementing device (3) is electrically connected with
There is off-network inverter (4), the outfan of described off-network inverter (4) is electrically connected with charging-discharging controller (5), described discharge and recharge
The outfan of controller (5) is electrically connected with accumulator battery (6), and the outfan of described off-network inverter (4) is also electrically connected with
Single-chip computer control system (14), the outfan of described single-chip computer control system (14) is electrically connected with mode switch element (15),
The outfan of described mode switch element (15) has been electrically connected with DC load (16) and electric energy tariffing module (17), described
The outfan of electric energy tariffing module (17) is electrically connected with public electric wire net (18), the outfan of described solar photovoltaic assembly (1)
Also it is electrically connected with disconnect switch (9), the outfan of described disconnect switch (9) is electrically connected with photovoltaic conflux (10), described light
The conflux outfan of (10) of volt is electrically connected with DC-DC converter (11), and the outfan of described DC-DC converter (11) electrically connects
It is connected to combining inverter (12), the outfan of described combining inverter (12) is electrically connected with power distribution cabinet group (13), described distribution
The outfan of cabinet group (13) is electrically connected at the input of single-chip computer control system (14), the outfan of described power distribution cabinet group (13)
Also it is electrically connected with AC load (20).
2. one kind according to claim 1 grid-connected with off-network photovoltaic generation switched system it is characterised in that：Described photovoltaic control
The outfan of device (2) processed is also electrically connected with measure voltage ＆amp (8).
3. one kind according to claim 1 grid-connected with off-network photovoltaic generation switched system it is characterised in that：Described discharge and recharge
The outfan of controller (5) is also electrically connected with super-charge super-discharge alarm unit (7), and peace inside super-charge super-discharge alarm unit (7)
Equipped with buzzer alarm (71).
4. one kind according to claim 1 grid-connected with off-network photovoltaic generation switched system it is characterised in that：Described photovoltaic converges
Stream (10) outfan be also electrically connected with power back-off (19), and the outfan of power back-off (19) be electrically connected at grid-connected inverse
Become the input of device (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620623497.7U CN205992791U (en) | 2016-06-22 | 2016-06-22 | Grid-connected and off-grid photovoltaic power generation switching system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620623497.7U CN205992791U (en) | 2016-06-22 | 2016-06-22 | Grid-connected and off-grid photovoltaic power generation switching system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205992791U true CN205992791U (en) | 2017-03-01 |
Family
ID=58102326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620623497.7U Expired - Fee Related CN205992791U (en) | 2016-06-22 | 2016-06-22 | Grid-connected and off-grid photovoltaic power generation switching system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205992791U (en) |
-
2016
- 2016-06-22 CN CN201620623497.7U patent/CN205992791U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170301 |
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| CF01 | Termination of patent right due to non-payment of annual fee |