CN201887443U - Direct-current power distribution structure - Google Patents
Direct-current power distribution structure Download PDFInfo
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- CN201887443U CN201887443U CN2010206516054U CN201020651605U CN201887443U CN 201887443 U CN201887443 U CN 201887443U CN 2010206516054 U CN2010206516054 U CN 2010206516054U CN 201020651605 U CN201020651605 U CN 201020651605U CN 201887443 U CN201887443 U CN 201887443U
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- air switch
- power supply
- time
- distribution structure
- bus
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Abstract
The utility model discloses a direct-current power distribution structure. A direct-current power device is connected with a load to supply electricity via a direct-current output bus, an air switch is mounted on a load circuit, and break-time of the air switch is shorter than time for starting short-circuit protection of the direct-current power device. The direct-current power distribution structure can avoid interruption of power supply for all load circuits due to failure of a single load circuit, and controls extension of a failure range.
Description
Technical field
The utility model relates to the technology of DC power cabinet, and is special relevant with the distribution structure of DC power supply.
Background technology
In the prior art; the scheme of electric power of DC power cabinet as shown in Figure 1; the air switch of selecting for use on the circuit 30 of direct current output 10 all is common air switch; its break-time generally needs more than the 20ms; and DC power supply device 20 generally requires can protect with interior at 20ms when being short-circuited fault; this just following problem might occur: when the load 40 on a certain circuit 30 is short-circuited fault; air switch 10 on this place's DC line 30 does not also have disjunction; and DC power supply device 20 short-circuit protection; thereby all electric on the whole DC line are interrupted, fault coverage is enlarged.
In order to solve the problem that causes all loaded line power failure owing to single loaded line fault, the inventor improves the scheme of electric power of DC power cabinet, and this case produces thus.
The utility model content
The purpose of this utility model is to provide a kind of distribution structure of DC power supply, causes that to avoid single loaded line fault the control fault expanded range takes place the phenomenon of all loaded line power failure.
To achieve these goals, the technical solution of the utility model is as follows:
A kind of distribution structure of DC power supply, DC power supply device is connected power supply by direct current output bus with load, air switch is installed on loaded line, and the break-time of this air switch is shorter than the time that DC power supply device self short-circuit protection starts.
The air switch of described loaded line be break-time at 10ms with interior Fast DC Circuit Breaker.
The direct current output bus of described DC power supply device is divided into two above branch roads; each branch road is connected with a secondary dc bus respectively; every the secondary dc bus is equipped with preposition air switch; the break-time of this preposition air switch is shorter than the time that DC power supply device self short-circuit protection starts; every the secondary dc bus connects some loads more separately, and air switch also is installed on loaded line.
The preposition air switch of described secondary dc bus and the air switch of loaded line all be break-time at 10ms with interior Fast DC Circuit Breaker.
Described each air switch all is connected with an indicator light, is used to refer to deciliter state of air switch.
After adopting such scheme; the utility model is because all selected air switch split times all are shorter than the time that DC power supply device self short-circuit protection starts; when the load on a certain circuit is short-circuited; air switch on this loaded line can be in (in the 10ms) disjunction of utmost point short time; so; avoid DC power supply device self short-circuit protection to start, and then prevented electric interruptions all on the whole circuit, control fault expanded range.
In addition; the utility model is further exported direct current bus and is divided into two above branch roads and connects a secondary dc bus respectively; the disjunction even the air switch on a certain loaded line is not able to do in time; the preposition air switch of place secondary dc bus also can guarantee that at least the load under all the other bar secondary dc buss can be powered continuously in disjunction before the DC power supply device protection.
Below in conjunction with the drawings and specific embodiments the utility model is described further.
Description of drawings
Fig. 1 is the DC distribution scheme schematic diagram of prior art;
Fig. 2 is a DC distribution scheme schematic diagram of the present utility model.
The prior art label declaration
The utility model label declaration
DC power supply device 1 direct current output bus 2
Load 3 air switches 4
Secondary dc bus 5 preposition air switches 6.
Embodiment
As shown in Figure 2; it is preferred embodiment of the present utility model; a kind of distribution structure of DC power supply; DC power supply device 1 is connected power supply by direct current output bus 2 with load 3; air switch 4 is installed on loaded line; the break-time of this air switch 4 is shorter than the time that DC power supply device 1 self short-circuit protection starts, the air switch 4 of loaded line specifically can select break-time at 10ms with interior Fast DC Circuit Breaker.Like this; when the load on a certain circuit 3 was short-circuited, the air switch 4 on this loaded line can be in utmost point disjunction in the short time, thereby had avoided DC power supply device 1 self short-circuit protection to start; and then prevent that electric all on the whole circuit from interrupting the control fault expanded range.
Present embodiment further also is divided into two branch roads with the direct current output bus 2 of DC power supply device 1; each branch road is connected with a secondary dc bus 5 respectively; every secondary dc bus 5 is equipped with preposition air switch 6; the break-time of this preposition air switch 6 also is shorter than the time that DC power supply device 1 self short-circuit protection starts; preposition air switch 6 specifically also can select break-time at 10ms with interior Fast DC Circuit Breaker; every secondary dc bus 5 connects some loads 3 more separately; air switch 4 still is installed on loaded line, the air switch 4 of loaded line specifically can select break-time at 10ms with interior Fast DC Circuit Breaker.Like this, the disjunction even the air switch 4 on a certain loaded line is not able to do in time, the preposition air switch 6 of place secondary dc bus 5 also can disjunction before DC power supply device 1 protection, guarantees that at least the load 3 under all the other bar secondary dc buss 5 can be powered continuously.
Observe for convenience, present embodiment also all is connected each air switch (air switch 4 on the preposition air switch 6 that comprises secondary dc bus 5 and the loaded line) with an indicator light, be used to refer to deciliter state of air switch.
The above only is several embodiment of the present utility model, is not the restriction to this case design, and all equivalent variations of doing according to the design key of this case all fall into the protection range of this case.
Claims (5)
1. the distribution structure of a DC power supply; it is characterized in that: DC power supply device is connected power supply by direct current output bus with load; air switch is installed on loaded line, and the break-time of this air switch is shorter than the time that DC power supply device self short-circuit protection starts.
2. a kind of distribution structure of DC power supply according to claim 1 is characterized in that: the air switch of described loaded line be break-time at 10ms with interior Fast DC Circuit Breaker.
3. a kind of distribution structure of DC power supply according to claim 1; it is characterized in that: the direct current output bus of described DC power supply device is divided into two above branch roads; each branch road is connected with a secondary dc bus respectively; every the secondary dc bus is equipped with preposition air switch; the break-time of this preposition air switch is shorter than the time that DC power supply device self short-circuit protection starts; every the secondary dc bus connects some loads more separately, and air switch also is installed on loaded line.
4. as the distribution structure of a kind of DC power supply as described in the claim 3, it is characterized in that: the preposition air switch of described secondary dc bus and the air switch of loaded line all be break-time at 10ms with interior Fast DC Circuit Breaker.
5. a kind of distribution structure of DC power supply according to claim 1, it is characterized in that: described each air switch all is connected with an indicator light, is used to refer to deciliter state of air switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206516054U CN201887443U (en) | 2010-12-10 | 2010-12-10 | Direct-current power distribution structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206516054U CN201887443U (en) | 2010-12-10 | 2010-12-10 | Direct-current power distribution structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201887443U true CN201887443U (en) | 2011-06-29 |
Family
ID=44184988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206516054U Expired - Fee Related CN201887443U (en) | 2010-12-10 | 2010-12-10 | Direct-current power distribution structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201887443U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109696629A (en) * | 2018-12-21 | 2019-04-30 | 中广核研究院有限公司 | Nuclear power plant's diesel generating set test method |
-
2010
- 2010-12-10 CN CN2010206516054U patent/CN201887443U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109696629A (en) * | 2018-12-21 | 2019-04-30 | 中广核研究院有限公司 | Nuclear power plant's diesel generating set test method |
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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: 20110629 Termination date: 20151210 |
|
| EXPY | Termination of patent right or utility model |