CN209298897U - A kind of grid-connected dedicated access case - Google Patents
A kind of grid-connected dedicated access case Download PDFInfo
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- CN209298897U CN209298897U CN201821626530.7U CN201821626530U CN209298897U CN 209298897 U CN209298897 U CN 209298897U CN 201821626530 U CN201821626530 U CN 201821626530U CN 209298897 U CN209298897 U CN 209298897U
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- Prior art keywords
- grid
- direct current
- convergence device
- inverter
- transformer
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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
The utility model discloses a kind of grid-connected dedicated access casees, direct current branch convergence device therein, current sensor, the total convergence device of direct current, inverter, transformer, detection collector, grid integration mouth are all set in box house, and thermometer, irradiation instrument are set to the outside of cabinet；Direct current branch convergence device connects photovoltaic module and the total convergence device of direct current, the total convergence device of direct current connects inverter, inverter connects transformer, transformer connects grid integration mouth, for connecting power grid, current sensor is connected between the total convergence device of direct current and inverter grid integration mouth, and the quantity of current sensor is equal to the quantity of direct current branch convergence device, current sensor, thermometer and irradiation instrument are all connected to detection collector, and inverter, transformer and detection collector are all connected with photovoltaic control system.Multiple functions are integrated in one by the present embodiment, perfect in shape and function, meet the demand of modern photovoltaic power generation, have wide application value, provide hardware foundation for photovoltaic power generation intelligent control.
Description
Technical field
The utility model relates to a kind of grid-connected dedicated access casees, belong to technical field of photovoltaic power generation.
Background technique
Photovoltaic power generation is the photovoltaic effect using interface and luminous energy is directly translated into a kind of skill of electric energy
Art, after the energy generated accesses distribution system, certainly to the relay protection scheme of power distribution network, system short-circuit levels of current, distribution
More stringent requirements are proposed for the application of dynamicization system function, power quality, field work safe etc..
Photovoltaic parallel in system is exactly the system that solar energy photovoltaic system is connected with power network.It is necessary during grid-connected
Use photovoltaic combiner box.Photovoltaic combiner box is divided to two kinds of header box of direct current conflux case and exchange, internal mainly equipped with breaker, fusing
The equipment such as device, lightning-protection module, main function are the line reduced between solar-energy photo-voltaic cell array and inverter.The first generation is converged
It flows case and there was only confluence, the function of lightning protection, this kind of header box is obviously no longer satisfied the demand of modern photovoltaic power generation, therefore develops
Safer, reliable grid-connected dedicated access case is extremely urgent.
Utility model content
To solve the deficiencies in the prior art, the purpose of this utility model is to provide it is a kind of it is multi-functional, meet modern light
Lie prostrate the grid-connected dedicated access case of power generation needs
In order to achieve the above objectives, the utility model adopts the following technical solutions:
A kind of grid-connected dedicated access case, including cabinet, direct current branch convergence device, current sensor, the total convergence device of direct current,
Inverter, transformer, detection collector, grid integration mouth, thermometer and irradiation instrument are direct current branch convergence device, current sensor, straight
It flows total convergence device, inverter, transformer, detection collector, grid integration mouth and is all set in box house, thermometer, irradiation instrument
It is set to the outside of cabinet；
Direct current branch convergence device connects photovoltaic module and the total convergence device of direct current, and the total convergence device of direct current connects inverter, inverter
Transformer is connected, transformer connects grid integration mouth, and for grid integration mouth for connecting power grid, it is total that current sensor is connected to direct current
Between convergence device and inverter, the quantity of current sensor is equal to the quantity of direct current branch convergence device, current sensor, thermometer and
Irradiation instrument is all connected to detection collector, and inverter, transformer and detection collector are all connected with photovoltaic control system.
Grid-connected dedicated access case above-mentioned, cabinet upper end are additionally provided with overhead gage, and overhead gage is connected to case by screw rod
The surface of body, is additionally provided with gasket between overhead gage and the nut of screw rod upper end, the edge of overhead gage is additionally provided with side plate, side plate
Side is equipped with press strip, and press strip is used to compress the cable of each photovoltaic module.
Grid-connected dedicated access case above-mentioned, side plate lower edge is lower than edge on cabinet.
Grid-connected dedicated access case above-mentioned, transformer are also connected with alternating current output end.
Grid-connected dedicated access case above-mentioned, lightning protection device built in direct current branch convergence device.
Grid-connected dedicated access case above-mentioned, breaker built in direct current branch convergence device.
The material of grid-connected dedicated access case above-mentioned, cabinet and overhead gage is stainless steel or aluminium alloy.
Grid-connected dedicated access case above-mentioned, the model of lightning protection device is AM40-800.
The utility model is achieved the utility model has the advantages that all current sensors of the present embodiment are all connected with detection collector,
And collector connection thermometer and irradiation instrument are detected, external environment (illumination, temperature) and light locating for thermometer and irradiation instrument
Volt component is essentially identical to be transmitted to photovoltaic control system for the data and carries out calculating analysis, when the electric current of some photovoltaic module occurs
When abnormal and alarm, to be overhauled.
Photovoltaic control system is able to detect and adjusts the output voltage of transformer and the output parameter of inverter, after making conversion
The voltage of alternating current, frequency it is consistent with the voltage of power grid alternating current, frequency, promote the quality of grid power source
Multiple functions are integrated in one by the present embodiment, perfect in shape and function, meet the demand of modern photovoltaic power generation, have wide
Application value, provide hardware foundation for photovoltaic power generation intelligent control.
Detailed description of the invention
Fig. 1 is the utility model overall structure diagram；
Fig. 2 is the utility model cabinet main view；
The meaning of appended drawing reference in figure: 1- photovoltaic module；2- cabinet；3- direct current branch convergence device；4- current sensor；5- is straight
Flow total convergence device；6- inverter；7- transformer；8- detects collector；9- grid integration mouth；10- alternating current output end；11- temperature
Instrument；12- irradiation instrument；21- overhead gage；211- side plate；22- screw rod；23- press strip；221- nut；222- gasket.
Specific embodiment
The utility model is further described with reference to the accompanying drawing.Following embodiment is only used for clearly illustrating this
The technical solution of utility model, and cannot be used as a limitation the limitation protection scope of the utility model.
Present embodiment discloses a kind of grid-connected dedicated access casees, including cabinet 2, direct current branch convergence device as shown in Figure 1:
3, the total convergence device 5 of current sensor 4, direct current, inverter 6, transformer 7, detection collector 8, grid integration mouth 9, thermometer 11
And irradiation instrument 12, the total convergence device 5 of direct current branch convergence device 3, current sensor 4, direct current, inverter 6, transformer 7, detection collector
8, grid integration mouth 9 is all set in inside cabinet 2, and thermometer 11, irradiation instrument 12 are set to the outside of cabinet 2.
Direct current branch convergence device 3 connects photovoltaic module 1 and the total convergence device 5 of direct current, and the total convergence device 5 of direct current connects inverter 6, inverse
Become device 6 and connect transformer 7, transformer 7 connects grid integration mouth 9, and grid integration mouth 9 is for connecting power grid, current sensor 4
It is connected between the total convergence device 5 of direct current and inverter 6, the quantity of current sensor 4 is equal to the quantity of direct current branch convergence device 3, electricity
Flow sensor 4, thermometer 11 and irradiation instrument 12 are all connected to detection collector 8, and detection collector 8 connects photovoltaic control control
Device.
As shown in Figure 2: 2 upper end of cabinet is additionally provided with overhead gage 21, overhead gage 21 by screw rod 22 be connected to cabinet 2 just on
It is square, it is additionally provided with gasket 222 between the nut of 22 upper end of overhead gage 21 and screw rod, the edge of overhead gage 21 is additionally provided with side plate 211,
211 side of side plate is equipped with press strip 23, and press strip 23 is used to compress the cable of each photovoltaic module 1.
Specifically, 211 lower edge of side plate is lower than edge on cabinet 2 in order to enhance protection of the overhead gage 21 for cabinet 2.
In view of photovoltaic power generation may be directly by household, therefore preferably transformer 7 is also connected with alternating current output end 10, for supplying
To household electricity.
Specifically, lightning protection device and breaker built in the direct current branch convergence device 3 of the present embodiment.Wherein, the present embodiment lightning protection device
Model be AM40-800.
The preferred stainless steel of the material of cabinet 2 and overhead gage 21 or aluminium alloy.
In use, the power supply line of each photovoltaic module 1 enters to the upper end of cabinet 2 by 211 lower edge of side plate, then connection is straight
Flow branch convergence device 3, overhead gage 2 can play cabinet 2 function of protection, such as prevent rainwater enter box house, prevent it is different
Object smashes cabinet 2.The electric current that all direct current branch convergence devices 3 generate enters to the total convergence device 5 of direct current through current sensor 4, so
Transformer 7 successively is connected by inverter 6 afterwards.The DC conversion that inverter 6 generates photovoltaic module is friendship that can be grid-connected
Galvanic electricity, transformer 7 play the role of boosting, raise voltage to the voltage value for meeting grid-connected requirement, or directly become voltage
It is used at the alternating current of 220V by the output of alternating current output end 10, directly.
All current sensors 4 of the present embodiment are all connected with detection collector 8, and detect collector 8 and connect thermometer
11 and irradiation instrument 12, external environment (illumination, temperature) locating for thermometer 11 and irradiation instrument 12 and photovoltaic module 1 is essentially identical will
The data are transmitted to photovoltaic control system and carry out calculating analysis, when the electric current of some photovoltaic module 1 is abnormal and Times
It is alert, to be overhauled.
Meanwhile inverter 6 and transformer 7 are all connected with photovoltaic control system, photovoltaic control system is able to detect and adjusts change
The output voltage of depressor 7 and the output parameter of inverter 6, the output parameter of inverter 6 include the frequency of alternating current, voltage, electricity
Stream, phase, it is active controlled with idle, electric power quality (voltage fluctuation, higher hamonic wave) etc., the electricity of the alternating current after making conversion
Pressure, frequency are consistent with the voltage of power grid alternating current, frequency, promote the quality of grid power source, photovoltaic control system is for inverter
6 and the control of transformer 7 belong to the prior art.
Multiple functions are integrated in one by the present embodiment, perfect in shape and function, meet the demand of modern photovoltaic power generation, have wide
Application value, provide hardware foundation for photovoltaic power generation intelligent control.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without deviating from the technical principle of the utility model, several improvement and deformations can also be made, these change
It also should be regarded as the protection scope of the utility model into deformation.
Claims (8)
1. a kind of grid-connected dedicated access case, which is characterized in that including cabinet (2), direct current branch convergence device (3), current sense
Device (4), the total convergence device of direct current (5), inverter (6), transformer (7), detection collector (8), grid integration mouth (9), thermometer
(11) and irradiation instrument (12), the direct current branch convergence device (3), current sensor (4), the total convergence device of direct current (5), inverter (6),
Transformer (7), detection collector (8), grid integration mouth (9) are all set in cabinet (2) inside, the thermometer (11), irradiation
Instrument (12) is set to the outside of cabinet (2)；
Direct current branch convergence device (3) connection photovoltaic module (1) and the total convergence device of direct current (5), the total convergence device of direct current (5) is even
It connects inverter (6), the inverter (6) connects transformer (7), and the transformer (7) connects grid integration mouth (9), grid-connected to connect
For connecting power grid, the current sensor (4) is connected between the total convergence device of direct current (5) and inverter (6) entrance (9), electricity
The quantity of flow sensor (4) is equal to the quantity of direct current branch convergence device (3), the current sensor (4), thermometer (11) and irradiation
Instrument (12) is all connected to detection collector (8), and the inverter (6), transformer (7) and detection collector (8) are all connected with photovoltaic
Control system.
2. grid-connected dedicated access case according to claim 1, which is characterized in that cabinet (2) upper end is additionally provided with
Overhead gage (21), the overhead gage (21) are connected to the surface of cabinet (2), overhead gage (21) and screw rod by screw rod (22)
(22) it is additionally provided between the nut of upper end gasket (222), the edge of the overhead gage (21) is additionally provided with side plate (211), described
Side plate (211) side is equipped with press strip (23), and press strip (23) is used to compress the cable of each photovoltaic module (1).
3. grid-connected dedicated access case according to claim 2, which is characterized in that side plate (211) lower edge is lower than
Edge on cabinet (2).
4. grid-connected dedicated access case according to claim 1, which is characterized in that the transformer (7) is also connected with city
Electricity output end (10).
5. grid-connected dedicated access case according to claim 1, which is characterized in that in the direct current branch convergence device (3)
Set lightning protection device.
6. grid-connected dedicated access case according to claim 1, which is characterized in that in the direct current branch convergence device (3)
Set breaker.
7. grid-connected dedicated access case according to claim 2, which is characterized in that the cabinet (2) and overhead gage
(21) material is stainless steel or aluminium alloy.
8. grid-connected dedicated access case according to claim 5, which is characterized in that the model of lightning protection device is AM40-
800。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821626530.7U CN209298897U (en) | 2018-10-08 | 2018-10-08 | A kind of grid-connected dedicated access case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821626530.7U CN209298897U (en) | 2018-10-08 | 2018-10-08 | A kind of grid-connected dedicated access case |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209298897U true CN209298897U (en) | 2019-08-23 |
Family
ID=67653686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821626530.7U Active CN209298897U (en) | 2018-10-08 | 2018-10-08 | A kind of grid-connected dedicated access case |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209298897U (en) |
-
2018
- 2018-10-08 CN CN201821626530.7U patent/CN209298897U/en active Active
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