CN203553638U - Distribution type photovoltaic grid-connected power distribution cabinet - Google Patents
Distribution type photovoltaic grid-connected power distribution cabinet Download PDFInfo
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- CN203553638U CN203553638U CN201320682737.7U CN201320682737U CN203553638U CN 203553638 U CN203553638 U CN 203553638U CN 201320682737 U CN201320682737 U CN 201320682737U CN 203553638 U CN203553638 U CN 203553638U
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Abstract
The utility model discloses a distribution type photovoltaic grid-connected power distribution cabinet comprising a cabinet body with detachable front and rear surface covers, and power distribution units arranged in the cabinet body. Each power distribution unit comprises a breaker capable of being connected with an inlet wire, and a breaker switch which is connected with the output end of the breaker. The output end of the breaker switch can be connected with an outlet wire. The cabinet body is internally provided with multiple power distribution units. The distribution type photovoltaic grid-connected power distribution cabinet is provided with multiple power distribution units. A load of a cable per cross section is high, area of the cross section of the cable is small, cost is low, heat radiation is fast and the cable is aging-resistant so that the service life of the cable is enhanced. Besides, the area of the cross section of the outlet cable is small so that the outlet cable can be directly accessed to an appropriate power distribution box without being accessed to a transformer low-voltage bus, and thus use amount and laying engineering amount of the cable are reduced and installation and use are simple.
Description
Technical field
The utility model relates to power distribution cabinet, especially relates to the grid-connected power distribution cabinet of a kind of distributed photovoltaic.
Background technology
At present, parallel network power generation is the Main Trends of The Development of photovoltaic application, photovoltaic generating system is connected and is incorporated into the power networks with electrical network, has higher generating efficiency and better environmental-protecting performance, and current domestic photovoltaic exchanges grid-connected power distribution cabinet, mostly be the grid-connected design of centralized interchange, single outlet, has following shortcoming: (1) single outlet design, and cable unit's cross section load is little, cable sectional area is large, and cost is high; (2) cable sectional area is large, so often need to be equipped with low-voltage distribution cabinet after transformer, so that grid-connected power distribution cabinet outlet access, cable consumption is large, and cable laying work amount is large, long construction period; (3) existing grid-connected power distribution cabinet, single outlet, distribution is dumb, is unwell to the photovoltaic plant on skyscraper.
Utility model content
For solving the problems of the technologies described above, the utility model proposes a kind of distribution flexibly, install and use the grid-connected power distribution cabinet of distributed photovoltaic that cost is low.
The technical solution adopted in the utility model is, design the grid-connected power distribution cabinet of a kind of distributed photovoltaic, comprise: the dismountable cabinet of forward and backward cover and be located at the power supply unit in described cabinet, described power supply unit comprises: can tap into the circuit breaker of line, the killer switch being connected with circuit breaker output, described killer switch output can leading-out wire, is provided with a plurality of power supply units in described cabinet.
In an embodiment of the present utility model, a described power supply unit inner breaker input Surge Protector in parallel.
Described power supply unit inner breaker input is an electric energy meter in parallel also.
Described electric energy meter is connected with an ammeter.
The described power supply unit inner breaker output residual current operated protective device of connecting.
Described power supply unit inner breaker input a plurality of connection male ends in parallel.
In described each connection male end output lead, three phase lines are connected with an air switch and are accessed circuit breaker, and one ground wire grounded, another root neutral line access residual current operated protective device.
Described a plurality of air switch wire of output terminal classification accesses circuit breaker by bus-bar.
In described cabinet, be provided with three power supply units, each power supply unit is provided with eight and connects male end.
The utility model is provided with a plurality of power supply units, and cable unit's cross section load is large, and cable sectional area is little, cost is low, and rapid heat dissipation is ageing-resistant, improve and use the cable life-span, and because outlet cable sectional area is little, can directly access suitable distribution box, need not access transformer low voltage bus, reduce cable consumption and cable laying work amount, install and use simply, in power supply unit, establish Surge Protector and residual current operated protective device, guarantee power supply unit circuit security of operation; The more suitable distributed photovoltaic power station that is applied in, be specially adapted to the photovoltaic plant on skyscraper, the flexible distribution of multiple unit, there is very high practicality, can meet different power demands, according to power demands and user's request, carry out free configuration, therefore there is very strong expansion, the utility model can be because of the damage of a certain assembly electric unit or fault and whole out of service, and the quality of power supply of electrical network and safety and stability are played to effect energetically.
Accompanying drawing explanation
Below in conjunction with embodiment and accompanying drawing, the utility model is elaborated, wherein:
Fig. 1 is the grid-connected catenation principle figure of the utility model;
Fig. 2 is the utility model front view of uncapping;
Fig. 3 is the utility model rearview of uncapping.
Embodiment
As shown in Figure 1, 2, the grid-connected power distribution cabinet of distributed photovoltaic that the utility model one embodiment provides, comprise: the dismountable cabinet of forward and backward cover 1 and be located at the power supply unit in cabinet, power supply unit comprises: can tap into the circuit breaker 2 of line, the killer switch 3 being connected with circuit breaker 2 outputs, killer switch 3 outputs can leading-out wire, is provided with a plurality of power supply units in cabinet 1.A plurality of power supply units, there is very high practicality, can meet different power demands, according to power demands and user's request, carry out free configuration, therefore there is very strong expansion, the utility model can be because of the damage of a certain assembly electric unit or fault and whole out of service, and the quality of power supply of electrical network and safety and stability are played to effect energetically.
Preferably; a power supply unit inner breaker 2 inputs Surge Protector 4 in parallel; while producing suddenly peak current or voltage because of extraneous interference in loop, Surge Protector 4 can be shunted within the extremely short time in conducting, thereby avoids the infringement of surge to other equipment in loop.The power supply unit inner breaker 2 outputs residual current operated protective device 6 of connecting; in the present embodiment, circuit breaker 2 and the integrated one that is set to of residual current operated protective device 6, when residual current meets or exceeds set-point; energy automatic shutoff circuit, prevents the device damage that circuit because short circuit causes.Surge Protector 4 and the residual current operated protective device 6 in power supply unit, established, fully guarantee power supply unit circuit safety in operation.Power supply unit inner breaker 2 inputs are an electric energy meter 5 in parallel also, and electric energy meter 5 is also connected with an ammeter, shows intuitively generating variable and each phase current of Unit three of power supply unit by electric energy meter 5 and ammeter.
Owing to being mostly the power supply of application three-phase five-wire mode in life; the utility model power supply unit inner breaker 2 inputs a plurality of connection male ends 7 in parallel; in each connection male end 7 output lead, three phase lines are connected with an air switch 8 and are accessed circuit breaker 2; one ground wire grounded; another root neutral line access residual current operated protective device 6; a plurality of air switch 8 wire of output terminal classification, three kinds of wires of same type are integrated and are linked in circuit breaker 2 by three bus-bars respectively.In the present embodiment, be provided with three power supply units in cabinet 1, each power supply unit is provided with eight and connects male end 7, and power supply unit and Three-phase five-wire AC380V are grid-connected, eight inverters 9 of access in each power supply unit, and inverter 9 peak power outputs are 21kW.
As shown in Figures 1 to 3, killer switch 3 is arranged the front upper that is arranged on power distribution cabinet inner vertical plate, electric energy meter 5 is arranged the positive middle part that is arranged on inner vertical plate, circuit breaker 2 is arranged the positive basifacial that is arranged on inner vertical plate, power distribution cabinet inner vertical plate upper rear portion is arranged the line interface 10 of going out is installed, and connects male end 7 arrangements and is arranged on inner vertical plate lower backside.During installation, inverter 9 input tie-in lines draw from photovoltaic solar assembly, the triple line of inverter 9 outputs is by connecting in the access circuit breakers 2 such as male end 7, bus-bar, by the distribution box 11 matching by line interface 10 accesses of going out after killer switch 3 outputs, distribution box 11 output leads are connected to the grid through distribution transformer 12.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection range of the present utility model.
Claims (9)
1. the grid-connected power distribution cabinet of distributed photovoltaic, comprise: the dismountable cabinet of forward and backward cover (1) and be located at the power supply unit in described cabinet, it is characterized in that, described power supply unit comprises: can tap into the circuit breaker (2) of line, the killer switch (3) being connected with described circuit breaker output, described killer switch output can leading-out wire, and described cabinet is provided with a plurality of power supply units in (1).
2. the grid-connected power distribution cabinet of distributed photovoltaic as claimed in claim 1, is characterized in that: described power supply unit inner breaker (2) input Surge Protector (4) in parallel.
3. the grid-connected power distribution cabinet of distributed photovoltaic as claimed in claim 1, is characterized in that: described power supply unit inner breaker (2) input is an electric energy meter in parallel (5) also.
4. the grid-connected power distribution cabinet of distributed photovoltaic as claimed in claim 3, is characterized in that, described electric energy meter (5) is connected with an ammeter.
5. the grid-connected power distribution cabinet of distributed photovoltaic as claimed in claim 1, is characterized in that, described power supply unit inner breaker (2) the output residual current operated protective device (6) of connecting.
6. the grid-connected power distribution cabinet of distributed photovoltaic as claimed in claim 1, is characterized in that, described power supply unit inner breaker (2) input a plurality of connection male ends (7) in parallel.
7. the grid-connected power distribution cabinet of distributed photovoltaic as claimed in claim 6; it is characterized in that; in described each connection male end (7) output lead, three phase lines are connected with an air switch (8) and are accessed circuit breaker (2), and one ground wire grounded, another root neutral line access residual current operated protective device (6).
8. the grid-connected power distribution cabinet of distributed photovoltaic as claimed in claim 7, is characterized in that, the classification of described a plurality of air switches (8) wire of output terminal accesses circuit breaker (2) by bus-bar.
9. the grid-connected power distribution cabinet of distributed photovoltaic as claimed in claim 8, is characterized in that, is provided with three power supply units in described cabinet (1), and each power supply unit is provided with eight and connects male end (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320682737.7U CN203553638U (en) | 2013-11-01 | 2013-11-01 | Distribution type photovoltaic grid-connected power distribution cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320682737.7U CN203553638U (en) | 2013-11-01 | 2013-11-01 | Distribution type photovoltaic grid-connected power distribution cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203553638U true CN203553638U (en) | 2014-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320682737.7U Expired - Fee Related CN203553638U (en) | 2013-11-01 | 2013-11-01 | Distribution type photovoltaic grid-connected power distribution cabinet |
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| CN (1) | CN203553638U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106451774A (en) * | 2016-10-13 | 2017-02-22 | 国网山东省电力公司章丘市供电公司 | Multifunctional intelligent dialing power distribution system of distributed type photovoltaic power station |
-
2013
- 2013-11-01 CN CN201320682737.7U patent/CN203553638U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106451774A (en) * | 2016-10-13 | 2017-02-22 | 国网山东省电力公司章丘市供电公司 | Multifunctional intelligent dialing power distribution system of distributed type photovoltaic power station |
| CN106451774B (en) * | 2016-10-13 | 2019-07-02 | 国网山东省电力公司章丘市供电公司 | A kind of photovoltaic power station multifunctional intellectual dialing distribution system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140416 Termination date: 20151101 |
|
| EXPY | Termination of patent right or utility model |