CN207166138U - A kind of subway station distribution system - Google Patents
A kind of subway station distribution system Download PDFInfo
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- CN207166138U CN207166138U CN201720859482.5U CN201720859482U CN207166138U CN 207166138 U CN207166138 U CN 207166138U CN 201720859482 U CN201720859482 U CN 201720859482U CN 207166138 U CN207166138 U CN 207166138U
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- subway station
- distribution system
- transformer
- station distribution
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Abstract
The utility model provides a kind of subway station distribution system, including distribution transformer, bus and lead-in circuit breaker, the distribution transformer is at least one, one group of line is drawn respectively per station power distribution transformer, every group of line connects a lead-in circuit breaker respectively, and the bus is all connected with every group of line.Subway station distribution system provided by the utility model, its is safe, and does not interfere with normal operation circuit.
Description
Technical field
It the utility model is related to a kind of subway station distribution system.
Background technology
The distribution line of subway station is extremely complex, and subway station densely populated place, once circuit breaks down, easily
Trigger fire, evacuating personnel is difficult, and then easily causes panic tread event to occur.Therefore, to the distribution system of subway station
Safety problem should especially pay attention to.
Utility model content
Deficiency, the technical problems to be solved in the utility model are to provide a kind of subway station distribution system based on more than, its
It is safe, and do not interfere with normal operation circuit.
In order to solve the above technical problems, the utility model employs following technical scheme：
A kind of subway station distribution system, including distribution transformer, bus and lead-in circuit breaker, the distribution become
Depressor is at least one, draws one group of line respectively per station power distribution transformer, every group of line connects a lead-in circuit breaker, the mother respectively
Connection breaker is all connected with every group of line.
Also include the safety protection device for acquisition system voltage and loop current.
The safety protection device includes current transformer, voltage transformer, display device and microprocessor, the Current Mutual Inductance
Device, voltage transformer, display device electrically connect with the microprocessor, and it is defeated that the microprocessor receives the current transformer
The voltage signal of current signal and the voltage transformer output gone out simultaneously controls display device to show.
The display device is LCD display.
The loop is grounded and is connected with external loading.
The distribution transformer neutral point is grounded or is directly grounded in low-voltage cabinet.
Also include double-power supply switching device, the distribution transformer is two, the double-power supply switching device and described two
Group line is all connected with.
The bus and lead-in circuit breaker use three-pole breaker or four-pole circuit breaker.
Every group of line includes A, B, C, PEN, PE and N line.
Using above technical scheme, the utility model achieves following technique effect：
(1) the utility model provides a kind of subway station distribution system, using two transformers, and configures mother open circuit
Device and lead-in circuit breaker, it is safe, and do not interfere with normal operation circuit；
(2) the total earth-fault current of the utility model subway station distribution system safety protection device real-time monitoring system and total
Leakage Current, when electric current is more than protection setting value and exceedes certain time, device alarm, prompt system generation earth fault or
Predict electrical fire.
Brief description of the drawings
Fig. 1 is the structure chart of the first embodiment of the utility model subway station distribution system；
Fig. 2 is the structure chart of second of embodiment of the utility model subway station distribution system；
Fig. 3 is the structure chart of the safety protection device of the utility model subway station distribution system.
Embodiment
As shown in figures 1 and 3, subway station distribution system provided by the utility model, including distribution transformer 1, mother
Breaker 2 and lead-in circuit breaker 3, distribution transformer 1 are at least one, draw one group of line respectively per station power distribution transformer 1, every group
Line connects a lead-in circuit breaker 3 respectively, and bus 2 is all connected with every group of line.
In two kinds of embodiments as depicted in figs. 1 and 2, distribution transformer 1 is two, during normal operation, mother open circuit
Device 2 disconnects, and two lead-in circuit breakers 3 close, and the independent operating of two station power distribution transformer 1, is considered as two distribution systems.Failure operation
When, a lead-in circuit breaker 3 disconnects, and puts into operation on bus is 2-in-1, a station power distribution transformer 1 is run, and is considered as a distribution
System.Subway station power distribution system secure provided by the utility model is high, and does not interfere with normal operation circuit.
Wherein, every group of line includes A, B, C line, PEN, PE and N line.The distribution system also includes being used for acquisition system electricity
The safety protection device 4 of pressure and loop current, loop are grounded and are connected with external loading, and safety protection device 4 is two, earth cable
G1G0, G2G0 and station grounded screen connect, and section is not less than 240mm2.Fig. 1 is shown in which that a kind of loop of embodiment connects
Ground structure figure, in the present embodiment, distribution transformer neutral point is grounded in low-voltage cabinet, and Fig. 2 shows another embodiment
Loop ground junction composition, in the present embodiment, distribution transformer neutral-point solid ground.
As shown in figure 3, safety protection device 4 includes current transformer 41, voltage transformer 42, display device 43, power module
44 and microprocessor 45, current transformer 41, voltage transformer 42, display device 43 electrically connected with microprocessor 45, micro- place
Reason device 45 receives the voltage signal that the current signal of the output of current transformer 41 and voltage transformer 42 export and controls display
Device 43 is shown.Display device 42 is LCD display.Safety protection device also includes operation button 46.Safety protection device 4 is connect by total
Earth fault electric current, earth-fault current contain normal Leakage Current, when earth-fault current is more than protection setting value and more than certain
Earth fault or electrical fire occur for time, device alarm, prompt system.Protection parameters definite value is by theoretical calculation and empirical data
It is determined that.Safety protection device has the functions such as ac and dc current collection, failure wave-recording, data analysis and alarm, and electrical fire can be achieved
Warning function, realizes system earth defencive function, and interior any one of distribution system occurs electrical fire or earth fault, can trigger
Safety protection device is alarmed.
Wherein, in addition to double-power supply switching device 6, double-power supply switching device 6 are all connected with two groups of lines, can switched
To different power supplys.Bus 2 and lead-in circuit breaker 3 are three poles or four-pole circuit breaker.
Finally it should be noted that：Preferred embodiment of the present utility model is these are only, is not limited to this practicality
It is new, although the utility model is described in detail with reference to embodiment, for those skilled in the art, its according to
The technical scheme described in foregoing embodiments can so be modified, or which part technical characteristic is equally replaced
Change, but it is all within the spirit and principles of the utility model, any modification, equivalent substitution and improvements made etc., it all should include
Within the scope of protection of the utility model.
Claims (9)
- A kind of 1. subway station distribution system, it is characterised in that：Including distribution transformer, bus and lead-in circuit breaker, The distribution transformer is at least one, draws one group of line respectively per station power distribution transformer, every group of line connects an inlet wire and broken respectively Road device, the bus are all connected with every group of line.
- 2. subway station distribution system according to claim 1, it is characterised in that：Also include be used for acquisition system voltage and The safety protection device of loop current.
- 3. subway station distribution system according to claim 2, it is characterised in that：The safety protection device includes Current Mutual Inductance Device, voltage transformer, display device and microprocessor, the current transformer, voltage transformer, display device with it is described micro- Processor electrically connects, what the current signal and voltage transformer that the microprocessor receiving current transformer exports exported Voltage signal simultaneously controls display device to show.
- 4. subway station distribution system according to claim 3, it is characterised in that：The display device is LCD display.
- 5. subway station distribution system according to claim 2, it is characterised in that：The loop ground connection and and external loading Connection.
- 6. subway station distribution system according to claim 5, it is characterised in that：The distribution transformer neutral point is low It is grounded or is directly grounded in pressure cabinet.
- 7. subway station distribution system according to claim 1, it is characterised in that：Also include double-power supply switching device, institute Distribution transformer is stated as two, the double-power supply switching device is all connected with two groups of lines.
- 8. subway station distribution system according to claim 1, it is characterised in that：Bus and the inlet wire open circuit Device uses three-pole breaker or four-pole circuit breaker.
- 9. subway station distribution system according to claim 1, it is characterised in that：Every group of line includes A, B, C, PEN, PE With N lines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720859482.5U CN207166138U (en) | 2017-07-11 | 2017-07-11 | A kind of subway station distribution system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720859482.5U CN207166138U (en) | 2017-07-11 | 2017-07-11 | A kind of subway station distribution system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207166138U true CN207166138U (en) | 2018-03-30 |
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ID=61713049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720859482.5U Active CN207166138U (en) | 2017-07-11 | 2017-07-11 | A kind of subway station distribution system |
Country Status (1)
| Country | Link |
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| CN (1) | CN207166138U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111431265A (en) * | 2020-04-27 | 2020-07-17 | 许江军 | Intelligent power distribution operation and maintenance system applied to subway station |
-
2017
- 2017-07-11 CN CN201720859482.5U patent/CN207166138U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111431265A (en) * | 2020-04-27 | 2020-07-17 | 许江军 | Intelligent power distribution operation and maintenance system applied to subway station |
| CN111431265B (en) * | 2020-04-27 | 2023-11-28 | 北京瑞拓电子技术发展有限公司 | Intelligent power distribution operation and maintenance system applied to subway station |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 510010 No. 204 Huanshi West Road, Guangzhou City, Guangdong Province Patentee after: Guangzhou Metro Design and Research Institute Co., Ltd. Address before: 510010 No. 204 Huanshi West Road, Guangzhou City, Guangdong Province Patentee before: Guangzhou Metro Design & Research Institute Co., Ltd. |
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| CP01 | Change in the name or title of a patent holder |