CN203119314U - Inverter cabinet for grid-connection photovoltaic power generation system - Google Patents
Inverter cabinet for grid-connection photovoltaic power generation system Download PDFInfo
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- CN203119314U CN203119314U CN 201320010540 CN201320010540U CN203119314U CN 203119314 U CN203119314 U CN 203119314U CN 201320010540 CN201320010540 CN 201320010540 CN 201320010540 U CN201320010540 U CN 201320010540U CN 203119314 U CN203119314 U CN 203119314U
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- direct current
- grid
- cabinet
- inversion
- distribution unit
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- 238000010248 power generation Methods 0.000 title abstract 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- 238000005070 sampling Methods 0.000 claims description 7
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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Abstract
The utility model discloses an inverter cabinet for a grid-connection photovoltaic power generation system. The inverter cabinet comprises a cabinet body, an inverter grid-connection unit and a DC power distribution unit, wherein the inverter grid-connection unit and the DC power distribution unit are arranged in the cabinet body. The inverter grid-connection unit comprises an inverter module which is connected with a DC input end of the DC power distribution unit and an AC output end of a power grid. The DC power distribution unit comprises multiple DC input branch circuits and an output end of the DC power distribution unit, wherein each of the DC input branch circuit comprises a branch switch arranged on the DC input branch circuit, one end of the DC input branch circuit is a connection end which is connected with a combiner box, and the other end is connected with the output end of the DC power distribution unit; and the output end of the DC power distribution unit is connected with an input end of the inverter grid-connection unit. According to the inverter cabinet disclosed by the utility model, the inverter grid-connection unit and the DC power distribution unit are arranged to be a whole body, thereby reducing the manufacturing cost of equipment, reducing the workload of field installation and connection, saving the cost of connection cables, and reducing the workload of equipment maintenance in system operation at the same time.
Description
Technical field
The utility model relates to a kind of inversion cabinet for grid-connected photovoltaic system.
Background technology
As shown in Figure 1, existing grid-connected photovoltaic system generally includes combining inverter 10, DC power distribution cabinet 11, header box 12 and photovoltaic array 13, header box 12 is connected with multichannel photovoltaic array 13, the input of DC power distribution cabinet 11 is through the input that the output that direct current cables connects header box 12 confluxes, output connects combining inverter 10, carries out inversion and is incorporated into the power networks.
There is following defective in above-mentioned existing grid-connected photovoltaic system: inverter 10 and DC power distribution cabinet 11 adopt independently cabinet, device fabrication cost height, during on-the-spot the installation, also need to increase the stube cable between DC power distribution cabinet 11 and the inverter 10, workload and difficulty of construction that equipment is installed have not only been increased, bring more fault point to electricity generation system simultaneously, caused failure rate to rise.
The utility model content
The technical problems to be solved in the utility model is, a kind of inversion cabinet for grid-connected photovoltaic system is provided, overcome equipment cost height that existing grid-connected photovoltaic system uses independently inverter and DC power distribution cabinet to exist, increase fitter's work amount and difficulty of construction, the defective more than the system failure point.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of inversion cabinet for grid-connected photovoltaic system, comprise cabinet, be arranged on the inversion grid connection unit in this cabinet, it is characterized in that, also comprise the Direct Current Distribution Unit that is arranged in this cabinet;
This inversion grid connection unit is that alternating current and output are connected to the grid with dc inverter, comprises inversion module, connects the direct-flow input end and the ac output end that is connected electrical network of this Direct Current Distribution Unit;
This Direct Current Distribution Unit carries out distribution to the direct current of multichannel header box and confluxes, comprise multi-channel DC input shunt and Direct Current Distribution Unit output, each direct current input comprises the switch-dividing that is arranged in this direct current input along separate routes along separate routes, and each direct current input end along separate routes connects described Direct Current Distribution Unit output for terminals, the other end that connects a header box; This Direct Current Distribution Unit output connects described inversion grid connection unit input.
At the inversion cabinet for grid-connected photovoltaic system of the present utility model, the space that described cabinet is installed described inversion grid connection unit vertically is arranged in parallel with the space that described Direct Current Distribution Unit is installed.
At the inversion cabinet for grid-connected photovoltaic system of the present utility model, described direct current input comprises direct current input current sampling apparatus along separate routes.
At the inversion cabinet for grid-connected photovoltaic system of the present utility model, described direct current input current sampling apparatus is Hall current detecting element, instrument transformer or the shunt that is contained on the copper busbar of described direct current input terminal.
At the inversion cabinet for grid-connected photovoltaic system of the present utility model, comprise master switch, this master switch is arranged on described inversion grid connection unit input or described Direct Current Distribution Unit output, is used for the on off operating mode of control described inversion grid connection unit and described Direct Current Distribution Unit.
At the inversion cabinet for grid-connected photovoltaic system of the present utility model, the quantity of described master switch is one or two in parallel.
At the inversion cabinet for grid-connected photovoltaic system of the present utility model, in the space that described Direct Current Distribution Unit is installed, described master switch is arranged on this top, space, and described switch-dividing is arranged on the middle part in this space, and described direct current input terminal is arranged on the bottom in this space.
At the inversion cabinet for grid-connected photovoltaic system of the present utility model, described master switch is isolating switch or circuit breaker, and described switch-dividing is isolating switch or circuit breaker or contactor.
Implement the inversion cabinet for grid-connected photovoltaic system of the present utility model, compared with the prior art, its beneficial effect is:
1. become as a whole owing to structurally inversion grid connection unit and Direct Current Distribution Unit being arranged in the same cabinet, reduced the manufacturing cost of equipment, reduced when adopting two autonomous devices the scene simultaneously and inverter and DC power distribution cabinet have been installed the workload that is connected, saved the stube cable between two autonomous devices
2. owing to inversion grid connection unit and Direct Current Distribution Unit merging is as a whole, reduced system's workload to plant maintenance in service.
Description of drawings
Fig. 1 is the schematic diagram of existing grid-connected photovoltaic system.
Fig. 2 is the front view that the utility model is used for a kind of embodiment of inversion cabinet of grid-connected photovoltaic system.
Fig. 3 is the cut-away view that the utility model is used for a kind of execution mode of inversion cabinet Direct Current Distribution Unit of grid-connected photovoltaic system.
Fig. 4 is the cut-away view that the utility model is used for the another kind of execution mode of inversion cabinet Direct Current Distribution Unit of grid-connected photovoltaic system.
Fig. 5 is inversion cabinet multichannel input wires and the current sample structure chart that the utility model is used for grid-connected photovoltaic system.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
To shown in Figure 5, the inversion cabinet that the utility model is used for grid-connected photovoltaic system comprises cabinet 100, is arranged on inversion grid connection unit 1 and the Direct Current Distribution Unit 2 of cabinet 100 as Fig. 2.
It is that alternating current and output are connected to the grid that inversion grid connection unit 1 is used for dc inverter, comprises the direct-flow input end and the ac output end that is connected electrical network of inversion module (can adopt the existing inverter structure), connection Direct Current Distribution Unit 2.
Direct Current Distribution Unit 2 is used for direct current to the multichannel header box of photovoltaic electrical network to carry out distribution and confluxes, comprise multi-channel DC input shunt and Direct Current Distribution Unit output, each direct current input comprises the switch-dividing 4 that is arranged in this direct current input along separate routes along separate routes, and each direct current input end along separate routes connects the Direct Current Distribution Unit output for terminals, the other end that connects a header box.The Direct Current Distribution Unit output connects inversion grid connection unit input.
The direct current input of Direct Current Distribution Unit 2 is corresponding with the header box quantity in the electrical network along separate routes, satisfies the requirement that connects header box, and switch-dividing 4 is arranged in each direct current input along separate routes, and its quantity equates with direct current input quantity along separate routes.
As shown in Figure 3, Direct Current Distribution Unit 2 is provided with the input of eight road direct currents along separate routes, and totally eight positive terminals and eight negative pole ends are the clear observation of energy, only show one road direct current stube cable along separate routes among the figure.Stube cable comprises the cable 7 of the copper busbar 6 that connects the direct current input terminal and switch-dividing 4 and is connected the cable 8 of switch-dividing 4 and tandem copper bar 9.
In the present embodiment, master switch 3 is arranged on the Direct Current Distribution Unit 2, so the output of Direct Current Distribution Unit is the output of master switch 3.In other embodiments, when master switch 3 was not arranged on the Direct Current Distribution Unit 2, the output of Direct Current Distribution Unit was the tandem copper bar 9 that the output of each switch-dividing 4 connects.
In other embodiments, master switch 3 can be arranged on the inversion grid connection unit 1.
As shown in Figure 2, in the present embodiment, the space that cabinet 100 is installed inversion grid connection unit 1 vertically is set up in parallel structure with the space employing that Direct Current Distribution Unit 2 is installed.
In the present embodiment, cabinet 100 is in the space that Direct Current Distribution Unit 2 is installed, and master switch 3 is arranged on this top, space, and switch-dividing 4 is arranged on the middle part in this space, and direct current input terminal (and direct current input wires copper bar 6) is arranged on the bottom in this space.In other embodiments, the structural configuration of cabinet 100 in the space of Direct Current Distribution Unit 2 is installed can need to install other arrangements more and design.
Master switch 3 can sample isolating switch or circuit breaker, switch-dividing 4 can sample isolating switch or circuit breaker or contactor.
In the present embodiment, direct current input current sampling apparatus 5 adopts the Hall current detecting element 5 on the copper busbar 6 that is contained in many direct current input terminals along separate routes, direct current input current sampling apparatus 5 can be contained in many direct current input terminals along separate routes negative or positive electrode on.
In other embodiments, direct current input current sampling apparatus 5 can adopt other current measuring elements, for example, can adopt instrument transformer, shunt etc.
Maintenance for convenience and maintenance arrange master switch 3, are used for the on off operating mode of control inversion grid connection unit and Direct Current Distribution Unit.In the present embodiment, master switch 3 is arranged on the output of Direct Current Distribution Unit 2.In other embodiments, master switch 3 can be arranged on the input of inversion grid connection unit 1.
Usually, master switch 3 arranges one.For the convenience of type selecting, master switch 3 can adopt two (master switchs 31,32 as shown in Figure 4) in parallel.
Claims (8)
1. an inversion cabinet that is used for grid-connected photovoltaic system comprises cabinet, is arranged on the inversion grid connection unit in this cabinet, it is characterized in that, also comprises the Direct Current Distribution Unit that is arranged in this cabinet;
This inversion grid connection unit is that alternating current and output are connected to the grid with dc inverter, comprises inversion module, connects the direct-flow input end and the ac output end that is connected electrical network of this Direct Current Distribution Unit;
This Direct Current Distribution Unit carries out distribution to the direct current of multichannel header box and confluxes, comprise multi-channel DC input shunt and Direct Current Distribution Unit output, each direct current input comprises the switch-dividing that is arranged in this direct current input along separate routes along separate routes, and each direct current input end along separate routes connects described Direct Current Distribution Unit output for terminals, the other end that connects a header box; This Direct Current Distribution Unit output connects described inversion grid connection unit input.
2. the inversion cabinet for grid-connected photovoltaic system as claimed in claim 1 is characterized in that, the space that described cabinet is installed described inversion grid connection unit vertically is arranged in parallel with the space that described Direct Current Distribution Unit is installed.
3. the inversion cabinet for grid-connected photovoltaic system as claimed in claim 2 is characterized in that, described direct current input comprises direct current input current sampling apparatus along separate routes.
4. the inversion cabinet for grid-connected photovoltaic system as claimed in claim 3 is characterized in that, described direct current input current sampling apparatus is Hall current detecting element, instrument transformer or the shunt that is contained on the copper busbar of described direct current input terminal.
5. as the described inversion cabinet for grid-connected photovoltaic system of one of claim 1 to 4, it is characterized in that, comprise master switch, this master switch is arranged on described inversion grid connection unit input or described Direct Current Distribution Unit output, is used for the on off operating mode of control described inversion grid connection unit and described Direct Current Distribution Unit.
6. the inversion cabinet for grid-connected photovoltaic system as claimed in claim 5 is characterized in that, the quantity of described master switch is one or two in parallel.
7. the inversion cabinet for grid-connected photovoltaic system as claimed in claim 5, it is characterized in that, in the space that described Direct Current Distribution Unit is installed, described master switch is arranged on this top, space, described switch-dividing is arranged on the middle part in this space, and described direct current input terminal is arranged on the bottom in this space.
8. the inversion cabinet for grid-connected photovoltaic system as claimed in claim 5 is characterized in that, described master switch is isolating switch or circuit breaker, and described switch-dividing is isolating switch or circuit breaker or contactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320010540 CN203119314U (en) | 2013-01-09 | 2013-01-09 | Inverter cabinet for grid-connection photovoltaic power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320010540 CN203119314U (en) | 2013-01-09 | 2013-01-09 | Inverter cabinet for grid-connection photovoltaic power generation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203119314U true CN203119314U (en) | 2013-08-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320010540 Expired - Fee Related CN203119314U (en) | 2013-01-09 | 2013-01-09 | Inverter cabinet for grid-connection photovoltaic power generation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203119314U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104467459A (en) * | 2014-12-18 | 2015-03-25 | 江苏方程电力科技有限公司 | Photovoltaic inverter integrating direct current distribution |
-
2013
- 2013-01-09 CN CN 201320010540 patent/CN203119314U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104467459A (en) * | 2014-12-18 | 2015-03-25 | 江苏方程电力科技有限公司 | Photovoltaic inverter integrating direct current distribution |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHENZHEN HOPEWIND ELECTRIC CO., LTD. Free format text: FORMER NAME: SHENZHEN HEWANG ELECTRIC CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 518055 Guangdong city of Shenzhen province Nanshan District Xili town village official Liuzhou Industrial Zone No. 5 Building second layer 1-3 Patentee after: Shenzhen's standing grain hopes electric limited company Address before: 518055 Guangdong city of Shenzhen province Guangdong Shenzhen Nanshan District City Xili town village official Liuzhou Industrial Zone 5 second 5 floor Patentee before: Shenzhen Hewang Electric Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130807 Termination date: 20210109 |