CN109586400A - A kind of direct current cabinet circuit - Google Patents
A kind of direct current cabinet circuit Download PDFInfo
- Publication number
- CN109586400A CN109586400A CN201811546354.0A CN201811546354A CN109586400A CN 109586400 A CN109586400 A CN 109586400A CN 201811546354 A CN201811546354 A CN 201811546354A CN 109586400 A CN109586400 A CN 109586400A
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- CN
- China
- Prior art keywords
- phase line
- direct current
- power supply
- voltage
- fuse
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J11/00—Circuit arrangements for providing service supply to auxiliaries of stations in which electric power is generated, distributed or converted
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The present invention relates to a kind of direct current cabinet circuits, including A phase line, B phase line, C phase line and the neutral conductor, A phase line, B phase line, C phase line and the neutral conductor have been connected respectively wiring input terminal and wiring output end, A phase line, the second A.C. contactor that the first A.C. contactor being connected with the first breaker and the second breaker are connected is equipped in B phase line and C phase line, A phase line incoming end is in series with relay and switch after parallel connection by first fuse, and the end that picks out of first fuse is connected with the neutral conductor after parallel connection, A phase line picks out end by being in series with switch and relay in second fuse, and the incoming end of first fuse is connected with the neutral conductor after parallel connection, A phase line, supply voltage U1 and supply voltage U2 are respectively connected in B phase line and C phase line.The utility model has the advantages that the present invention substantially increases service performance, safety and stability reduces the failure rate of equipment, is easy to personnel's maintenance and installation.
Description
Technical field
The present invention relates to technical field of electric equipment, and in particular to a kind of direct current cabinet circuit.
Background technique
The debugging of direct current cabinet connects whether AC electric source testing exchange double-power supply switching device is working properly, and dual power supply is cut
Whether the lower mouth voltage of changing device is normal.After AC portion test is normal, it is successively closed the alternating-current switch of charging module, observes mould
Whether block normally starts and measurement module output voltage and polarity.Charging module starting is normal and output voltage and polarity are correct
Afterwards, battery switch and each bus-tie circuit breaker are connected, whether measurement battery switch Xia Kou, conjunction mother, controlling voltage and polarity are correct,
And it observes voltage meter whether direction is overturned.
What the electric operation power in power plant and substation used now is all DC power supply, it is control load and moves
Power load and direct current emergency lighting load etc. provide power supply, are the bases of contemporary electric power system control, protection.Direct current cabinet is by handing over
Power distribution unit, charging module unit, voltage dropping silicon chain unit, DC feedback unit, power monitoring unit, monitoring module unit and absolutely
Edge monitoring unit composition.
The power equipment of existing electric system needs to carry out periodic Measuring error, but faces provisional failure
It can not effectively be coped with, cause and repair many and diverse and insufficient place, which results in existing electric system events
Barrier rate higher problem is also convenient for the maintenance of personnel and the use of equipment when fault occurs in night, under dark condition, drop
Low security performance.
Summary of the invention
It is an object of the present invention to provide a kind of direct current cabinet circuits, provide a kind of low equipment failure rate, safety and stability and are easy to make
Direct current cabinet circuit.
In order to achieve the goal above, the technical solution adopted by the present invention are as follows: a kind of direct current cabinet circuit, including A phase line, B phase
Line, C phase line, the neutral conductor, the first breaker, the second breaker, the first A.C. contactor and the second A.C. contactor, the A phase
Line, B phase line, C phase line and the neutral conductor have been connected respectively wiring input terminal and wiring output end, the A phase line, B phase line and C
The first A.C. contactor being connected with first breaker and second breaker are connected is equipped in phase line
Two A.C. contactors.
The A phase line incoming end is in series with relay and switch after parallel connection by first fuse, and described after parallel connection
The end that picks out of first fuse is connected with the neutral conductor, and it is described by being in series in second fuse that the A phase line picks out end
Switch and relay, and the incoming end of the first fuse is connected with the neutral conductor after parallel connection.
Supply voltage U1 and supply voltage U2, the supply voltage U1 are respectively connected in the A phase line, B phase line and C phase line
Closing circuit output and control loop are connected with by total power switch and master control power supply respectively with supply voltage U2 output end
Output, first power switch and second power switch and emergency lighting of the closing circuit output including opening and closing power supply return
Road, the control loop output include that the first control power supply, the second control power supply, third control power supply and the emergency lighting return
Road.
The closing circuit output and control loop output are placed on main monitoring unit, the main monitoring unit input terminal
It is connected with that high frequency unit charging module, alternating voltage test side, to close mother/controlling voltage input, battery/control mother current defeated simultaneously
Enter, on-off model, silicon pressure regulation signal and busbar voltage Insulation monitoring end, the main monitoring unit output end are connected with backstage and lead to
Letter.
Further, total power switch and the master control power input are respectively connected with voltage dropping silicon chain device.
Further, it is equipped between total power switch and the master control power supply and is connected with the voltage dropping silicon chain device
First connect connects lamp end.
Further, the third control power access end connects lamp end by second and is connected with first breaker and connects
Ground protection.
Further, it is placed in and is filled in feeder cabinet outside the main monitoring unit.
Further, described fill on feeder cabinet outer wall is connected with interface trigger and is located at below the interface trigger
The disconnecting switch of equidistant arrangement.
Further, the feeder cabinet inner wall bottom of filling is fixedly installed with battery.
The technical effects of the invention are that: the first breaker in A phase line, B phase line and three phase lines of C phase line connect
Two breakers, the second A.C. contactor of cooperation the first A.C. contactor connection, turn off automatically when can be to current overload,
First fuse and relay and switch can allow A phase line to carry out more effective ground protection after being connected in series, supply voltage U1 and
The emergency lighting circuit that supply voltage U2 is connected by total power switch with master control power supply, can be into when can be to down circuitry
Row illumination process, in order to the observation and maintenance of personnel, battery/control mother current input of main monitoring unit and the female electricity of conjunction mother/control
Pressure input can effectively control stable equilibrium when Current Voltage input, and alternating voltage detects box busbar voltage Insulation monitoring end
Can be monitored in real time to feeder cabinet is filled, finally by on-off model and silicon pressure regulation signals security be transported to background communication into
Row data transmission, such direct current cabinet circuit substantially increase service performance, and safety and stability reduces the failure rate of equipment.
Detailed description of the invention
Fig. 1 is the wiring diagram of direct current cabinet circuit of the present invention；
Fig. 2 is the connection schematic diagram of main monitoring unit of the present invention；
Fig. 3 is the schematic diagram that the present invention fills feeder cabinet.
Appended drawing reference: 1-A phase line；2-B phase line；3-C phase line；The 4- neutral conductor；The first breaker of 5-；The second breaker of 6-；
The first A.C. contactor of 7-；The second A.C. contactor of 8-；9- first fuse；10- relay；11- switch；12- second fuses
Device；13- supply voltage U1；14- supply voltage U2；The total power switch of 15-；16- master control power supply；The output of 17- closing circuit；
The output of 18- control loop；The first power switch of 19-；The second power switch of 20-；21- emergency lighting circuit；22- first controls electricity
Source；23- second controls power supply；24- third controls power supply；25- main monitoring unit；26- high frequency unit charging module；27- exchange
Voltage detection terminal；28- closes mother/controlling voltage input；29- battery/control mother current input；30- on-off model；31- silicon pressure regulation
Signal；32- busbar voltage Insulation monitoring end；33- background communication；34- voltage dropping silicon chain device；35- first connects lamp end；36- second
Connect lamp end；37- fills feeder cabinet；38- interface trigger；39- disconnecting switch；40- battery.
Specific embodiment
Referring to attached drawing 1-3, a kind of direct current cabinet circuit, including A phase line 1, B phase line 2, C phase line 3, the 4, first open circuit of the neutral conductor
Device 5, the second breaker 6, the first A.C. contactor 7 and the second A.C. contactor 8, the A phase line 1, B phase line 2, C phase line 3 and in
Property line 4 be connected respectively wiring input terminal and wiring output end, be equipped in the A phase line 1, B phase line 2 and C phase line 3 with
The second A.C. contactor that the first A.C. contactor 7 that first breaker 5 is connected is connected with second breaker 6
8。
1 incoming end of A phase line is in series with the relay 10 after parallel connection and switch 11 by first fuse 9, and in parallel
The end that picks out of the first fuse 9 is connected with the neutral conductor 4 afterwards, and the A phase line 1 picks out end and passes through in second fuse 12
It is in series with the switch 11 and relay 10, and the incoming end of the first fuse 9 is connected with the neutral conductor 4 after parallel connection.
Supply voltage U113 and supply voltage U214, the electricity are respectively connected in the A phase line 1, B phase line 2 and C phase line 3
Source voltage U113 and supply voltage U214 output end is connected with and is closed a floodgate back by total power switch 15 and master control power supply 16 respectively
Road output 17 and control loop output 18, the closing circuit output 17 include the first power switch 19 and second of opening and closing power supply
Power switch 20 and emergency lighting circuit 21, the control loop output 18 include the first control control electricity of power supply 22, second
Source 23, third control power supply 24 and the emergency lighting circuit 21.
The closing circuit output 17 and control loop output 18 are placed on main monitoring unit 25, the main monitoring unit
25 input terminals are connected with high frequency unit charging module 26, alternating voltage test side 27 simultaneously, close mother/controlling voltage input 28, electricity
Pond/control mother current input 29, on-off model 30, silicon pressure regulation signal 31 and busbar voltage Insulation monitoring end 32, the main monitoring
25 output end of unit is connected with background communication 33.
Preferably, A phase line 1, the first breaker 5 connection in 3 three phase lines of B phase line 2 and C phase line the second breaker 6,
The second A.C. contactor 8 for cooperating the first A.C. contactor 7 to connect is turned off automatically when can be to current overload, and first is molten
Disconnected device 9 can allow A phase line 1 to carry out more effective ground protection after being connected in series with relay 10 and switch 11, supply voltage U1 with
The emergency lighting circuit 21 that supply voltage U2 is connected by total power switch 15 and master control power supply 16, when can be to down circuitry
Illumination process can be carried out, in order to the observation and maintenance of personnel, the battery/control mother current input 29 and conjunction of main monitoring unit 25
Mother/controlling voltage input 28 can effectively control stable equilibrium when Current Voltage input, alternating voltage test side 27 and mother
Line voltage Insulation monitoring end 32 can monitor in real time to feeder cabinet 37 is filled, finally by on-off model 30 and silicon pressure regulation signal
The background communication 33 that is transported to of 31 safety carries out data transmission, and such direct current cabinet circuit substantially increases service performance, safety
Stablize, reduces the failure rate of equipment.
Preferably, total power switch 15 and 16 input terminal of master control power supply are respectively connected with voltage dropping silicon chain device
34。
Preferably, it is equipped with and the voltage dropping silicon chain device 34 between total power switch 15 and the master control power supply 16
First to be connected connects lamp end 35.
Preferably, third control 24 incoming end of power supply connects lamp end 36 by second and is connected with first breaker 5
And ground protection.
Preferably, it is placed in and is filled in feeder cabinet 37 outside the main monitoring unit 25.
Preferably, described fill on 37 outer wall of feeder cabinet is connected with interface trigger 38 and positioned at the interface trigger 38
The disconnecting switch 39 of lower section equidistant arrangement.
Preferably, the 37 inner wall bottom of feeder cabinet of filling is fixedly installed with battery 40.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and what is described in the above embodiment and the description is only the present invention
Principle, various changes and improvements may be made to the invention without departing from the spirit and scope of the present invention, these variation and
Improvement is both fallen in the range of claimed invention.The present invention claims protection scope by appended claims and its
Equivalent defines.
Claims (7)
1. a kind of direct current cabinet circuit, which is characterized in that including A phase line (1), B phase line (2), C phase line (3), the neutral conductor (4), first
Breaker (5), the second breaker (6), the first A.C. contactor (7) and the second A.C. contactor (8), the A phase line (1), B phase
Line (2), C phase line (3) and the neutral conductor (4) have been connected respectively wiring input terminal and wiring output end, the A phase line (1), B
The first A.C. contactor (7) being connected with first breaker (5) and described are equipped in phase line (2) and C phase line (3)
The second A.C. contactor (8) that two breakers (6) are connected；
A phase line (1) incoming end is in series with the relay (10) after parallel connection and switch (11) by first fuse (9), and
The end that picks out of the first fuse (9) is connected with the neutral conductor (4) after parallel connection, and the A phase line (1) picks out end by second
The switch (11) and relay (10) are in series on fuse (12), and after parallel connection the first fuse (9) incoming end
It is connected with the neutral conductor (4)；
It is respectively connected with supply voltage U1 (13) and supply voltage U2 (14) in the A phase line (1), B phase line (2) and C phase line (3),
The supply voltage U1 (13) and supply voltage U2 (14) output end pass through total power switch (15) and master control power supply respectively
(16) it is connected with closing circuit output (17) and control loop output (18), the closing circuit output (17) includes opening and closing power supply
The first power switch (19) and the second power switch (20) and emergency lighting circuit (21), the control loop export (18)
Including the first control power supply (22), the second control power supply (23), third control power supply (24) and the emergency lighting circuit (21)；
The closing circuit output (17) and control loop output (18) are placed on main monitoring unit (25), and the main monitoring is single
First (25) input terminal is connected with that high frequency unit charging module (26), alternating voltage test side (27), to close mother/controlling voltage defeated simultaneously
Enter (28), battery/control mother current input (29), on-off model (30), silicon pressure regulation signal (31) and busbar voltage Insulation monitoring
It holds (32), main monitoring unit (25) output end is connected with background communication (33).
2. a kind of direct current cabinet circuit according to claim 1, which is characterized in that total power switch (15) and described total
Control power supply (16) input terminal is respectively connected with voltage dropping silicon chain device (34).
3. a kind of direct current cabinet circuit according to claim 1, which is characterized in that total power switch (15) and described total
It is equipped with first to be connected with the voltage dropping silicon chain device (34) between control power supply (16) and connects lamp end (35).
4. a kind of direct current cabinet circuit according to claim 1, which is characterized in that the third controls power supply (24) incoming end
Lamp end (36), which is connect, by second is connected with first breaker (5) and ground protection.
5. a kind of direct current cabinet circuit according to claim 1, which is characterized in that be placed in outside the main monitoring unit (25)
It fills in feeder cabinet (37).
6. a kind of direct current cabinet circuit according to claim 5, which is characterized in that described fill on feeder cabinet (37) outer wall connects
There is interface trigger (38) and is located at the disconnecting switch (39) of equidistant arrangement below the interface trigger (38).
7. a kind of direct current cabinet circuit according to claim 5, which is characterized in that feeder cabinet (37) the inner wall bottom of filling is consolidated
Dingan County is equipped with battery (40).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811546354.0A CN109586400A (en) | 2018-12-18 | 2018-12-18 | A kind of direct current cabinet circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811546354.0A CN109586400A (en) | 2018-12-18 | 2018-12-18 | A kind of direct current cabinet circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109586400A true CN109586400A (en) | 2019-04-05 |
Family
ID=65930726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811546354.0A Withdrawn CN109586400A (en) | 2018-12-18 | 2018-12-18 | A kind of direct current cabinet circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109586400A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110277779A (en) * | 2019-05-13 | 2019-09-24 | 国家电网有限公司 | It is a kind of for temporarily substituting the power supply unit of direct current cabinet |
| CN114243673A (en) * | 2021-11-23 | 2022-03-25 | 中国长江电力股份有限公司 | High-reliability direct-current power supply system |
-
2018
- 2018-12-18 CN CN201811546354.0A patent/CN109586400A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110277779A (en) * | 2019-05-13 | 2019-09-24 | 国家电网有限公司 | It is a kind of for temporarily substituting the power supply unit of direct current cabinet |
| CN110277779B (en) * | 2019-05-13 | 2020-09-11 | 国家电网有限公司 | Power supply device for temporarily replacing direct current screen |
| CN114243673A (en) * | 2021-11-23 | 2022-03-25 | 中国长江电力股份有限公司 | High-reliability direct-current power supply system |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190405 |
|
| WW01 | Invention patent application withdrawn after publication |