CN109038490A - The auxiliary ground fault of locomotive quickly isolates device - Google Patents
The auxiliary ground fault of locomotive quickly isolates device Download PDFInfo
- Publication number
- CN109038490A CN109038490A CN201810730329.1A CN201810730329A CN109038490A CN 109038490 A CN109038490 A CN 109038490A CN 201810730329 A CN201810730329 A CN 201810730329A CN 109038490 A CN109038490 A CN 109038490A
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- auxiliary
- locomotive
- circuit
- auxiliary ground
- connection
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- 230000003137 locomotive effect Effects 0.000 title claims abstract description 44
- 239000003990 capacitor Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 6
- 230000005611 electricity Effects 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000006386 memory function Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/04—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for transformers
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The present invention relates to auxiliary circuit of locomotive protection technique fields; in particular to a kind of auxiliary ground fault of locomotive quickly isolates device, includes: being sequentially connected in series that the auxiliary ground connection of auxiliary earth relay, rectifier cell, II end console in circuit separates passs, the auxiliary ground connection of I end console separates pass and auxiliary be grounded of low-voltage cabinet separates pass；The auxiliary earth relay coil end and locomotive logic control element LCU circuit connection, auxiliary magnet and II end terminal cabinet circuit connection；The auxiliary ground connection of low-voltage cabinet connect every output switching terminal with main transformer tap circuit.The configuration of the present invention is simple; it is novel in design, reasonable; realize that more efficiently excision locomotive protects circuit; locomotive is set to maintain failure operation; when avoiding long parking cause locomotive machine it is broken caused by failure propagation, auxiliary earth fault can promptly and accurately be isolated, locomotive is made to maintain operation; the probability of failure propagation is reduced, there is stronger application value.
Description
Technical field
The present invention relates to auxiliary circuit of locomotive protection technique field, in particular to a kind of auxiliary ground fault of locomotive quickly isolates
Device.
Background technique
Alternating current-direct current of the SS9G for quasi high-speed main line passenger traffic is driven phased electric locomotive, and it is electrical to be applied to China's main line
Change railway personal rapid transit.To pushing, China's passenger traffic is quasi high-speed and the development of express locomotive is of great significance for SS9G electric locomotive.
SS9G locomotive design has that " single-point grounding occurs locomotive for auxiliary circuit in the process of running, protects circuit protection, and locomotive is jumped main disconnected
After stop.Cut off locomotive protect circuit, make locomotive maintain failure operation " function.It is disadvantageous in that 1): excision protective switch
It is mounted on electric appliance cabinet door, Operation switch is 14 more on electric appliance cabinet door.Driver is difficult to determine excision protective switch in short-term.2) driver
Usually the operation frequency is low.3), driver is far from Electric Appliance Cabinet.Three synthesis, driver are difficult to promptly and accurately complete to operate, and influence machine often
The operation on schedule on fare road, causes failure propagation.
Summary of the invention
Aiming at the shortcomings in the prior art, the present invention provides a kind of auxiliary ground fault of locomotive and quickly isolates device, design department
It learns, rationally, auxiliary earth fault can promptly and accurately be isolated, so that locomotive is maintained operation, reduce the probability of failure propagation.
According to design scheme provided by the present invention, a kind of auxiliary ground fault of locomotive quickly isolates device, includes: successively
The auxiliary ground connection of auxiliary earth relay, rectifier cell, the II end console of concatenation in circuit separates pass, the I auxiliary ground connection of end console
It separates pass and the auxiliary ground connection of low-voltage cabinet separates pass；The auxiliary earth relay coil end and locomotive logic control element LCU electricity
Road connection, auxiliary magnet and II end terminal cabinet circuit connection；The auxiliary ground connection of low-voltage cabinet is every output switching terminal and main transformer tap circuit
Connection.
Above-mentioned, rectifier cell and auxiliary be grounded in the connection circuit for separating pass of II end console are also serially connected with and auxiliary earth
The current-limiting circuit of relay normally open point electrical connection.
Preferably, the current-limiting circuit includes current-limiting resistance, and the capacitor in parallel with current-limiting resistance.
Above-mentioned, the rectifier cell is diode.
Beneficial effects of the present invention:
The configuration of the present invention is simple, it is novel in design, reasonable, by setting up auxiliary ground connection event between main transformer auxiliary winding and ground
Barrier quickly isolates device, and when single-point grounding, protection circuit protection occur SS9G locomotive for auxiliary circuit in the process of running, locomotive is jumped
Main parking of having no progeny realizes that more efficiently excision locomotive protects circuit, makes locomotive maintain failure operation, parking causes when avoiding long
Failure propagation caused by locomotive machine is broken, can promptly and accurately be isolated auxiliary earth fault, and locomotive is made to maintain operation, reduce event
Hinder widened probability, there is stronger application value.
Detailed description of the invention:
Fig. 1 is the schematic diagram of the device in embodiment.
Specific embodiment:
The present invention is described in further detail with technical solution with reference to the accompanying drawing, and specifically by preferred embodiment
Bright embodiments of the present invention, but embodiments of the present invention are not limited to this.
The embodiment of the present invention, it is shown in Figure 1, a kind of auxiliary ground fault of locomotive is provided and quickly isolates device, includes: successively
The auxiliary ground connection of auxiliary earth relay, rectifier cell, the II end console of concatenation in circuit separates pass, the I auxiliary ground connection of end console
It separates pass and the auxiliary ground connection of low-voltage cabinet separates pass；The auxiliary earth relay coil end and locomotive logic control element LCU electricity
Road connection, auxiliary magnet and II end terminal cabinet circuit connection；The auxiliary ground connection of low-voltage cabinet is every output switching terminal and main transformer tap circuit
Connection.Device is quickly isolated by setting up the auxiliary ground fault between main transformer auxiliary winding and ground, when SS9G locomotive exists
Single-point grounding occurs for auxiliary circuit in operational process, protects circuit protection, and locomotive jumps main parking of having no progeny, and realization is more efficiently cut
Except locomotive protects circuit, locomotive is made to maintain failure operation, when avoiding long parking cause locomotive machine it is broken caused by failure propagation.
Above-mentioned, rectifier cell and auxiliary be grounded in the connection circuit for separating pass of II end console are also serially connected with and auxiliary earth
The current-limiting circuit of relay normally open point electrical connection.
Preferably, the current-limiting circuit includes current-limiting resistance, and the capacitor in parallel with current-limiting resistance.
Above-mentioned, the rectifier cell is diode.
The embodiment of the present invention is protected its working principles are as follows: setting up auxiliary ground connection between main transformer auxiliary winding X6 (205) and ground
Protection circuit, convenient for discovery auxiliary circuit ground fault in time.Protect circuit mainly by auxiliary grounding relay 285KE, rectifier cell
291U, current-limiting resistance 262R, capacitor 257C, the auxiliary earthing isolator 237QS I of I end console, the auxiliary earthing isolator of low-voltage cabinet
The auxiliary earthing isolator 237QS II of 237QS, II end console is formed.The protection, which uses, source protection.Protection power source is mentioned by LCU
For 110V(223) DC power supply.Locomotive works normally, and auxiliary grounding relay 285KE does not constitute circuit and is not attracted.Work as auxiliary circuit
When single-point grounding occurs, it is equivalent to X6 (205) ground connection.Auxiliary grounding relay 285KE passes through 223-285KE coils-291U-
II -237QS of 262R -237QS -237QS I -205 (being equivalent to ground 400 at this time) constitutes the circuit 110V.Auxiliary grounding relay
285KE movement is attracted.Its auxiliary interlock apparatus point makes main disconnected opening coil obtain electric tripping.Locomotive stops working.Auxiliary interlock apparatus point simultaneously
Signal show circuit is connected, console display screen shows " auxiliary ground connection ".It, can be convenient and fast after service on buses or trains driver obtains " auxiliary ground connection " prompt
Isolated operation end (I end operates 237QS I, and II end manipulates 237QS II) auxiliary earthing isolator.Quickly cut off auxiliary ground protection electricity
Road.Close co-host break combined floodgate key.Locomotive maintains failure to use after main disconnected closure.Effectively eliminate failure propagation.It is tried by 3 trolleys
With.It achieves the desired results.It is in order to avoid high current occur and burning out grounding relay 285KE line that resistance 262R is sealed in circuit
Circle；Accessing 285KE opened point is to keep signal memory function；The purpose for being incorporated to capacitor 257C is for grounding relay
285KE coil is reliably attracted.In attached drawing, each components codes, specifications and models be see the table below:
The present invention is not limited to above-mentioned specific embodiment, and those skilled in the art can also make a variety of variations accordingly, but any
The variation equivalent or similar with the present invention should all be covered within the scope of the claims.
Claims (4)
1. a kind of auxiliary ground fault of locomotive quickly isolates device, characterized by comprising: the auxiliary being sequentially connected in series in circuit connects
The auxiliary ground connection of ground relay, rectifier cell, II end console separates pass, the auxiliary ground connection of I end console separates pass and the auxiliary ground connection of low-voltage cabinet
Separate pass；The coil-end of the auxiliary earth relay and locomotive logic control element LCU circuit connection, auxiliary magnet and II end
Terminal cabinet circuit connection；The auxiliary ground connection of low-voltage cabinet connect every output switching terminal with main transformer tap circuit.
2. the auxiliary ground fault of locomotive according to claim 1 quickly isolates device, which is characterized in that rectifier cell and II end
Auxiliary be grounded in the connection circuit for separating pass of console is also serially connected with the current-limiting circuit being electrically connected with auxiliary earth relay normally open point.
3. the auxiliary ground fault of locomotive according to claim 2 quickly isolates device, which is characterized in that the current-limiting circuit
Comprising current-limiting resistance, and the capacitor in parallel with current-limiting resistance.
4. the auxiliary ground fault of locomotive according to claim 1 quickly isolates device, which is characterized in that the rectifier cell
For diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810730329.1A CN109038490A (en) | 2018-07-05 | 2018-07-05 | The auxiliary ground fault of locomotive quickly isolates device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810730329.1A CN109038490A (en) | 2018-07-05 | 2018-07-05 | The auxiliary ground fault of locomotive quickly isolates device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109038490A true CN109038490A (en) | 2018-12-18 |
Family
ID=64640420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810730329.1A Pending CN109038490A (en) | 2018-07-05 | 2018-07-05 | The auxiliary ground fault of locomotive quickly isolates device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109038490A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101038826A (en) * | 2006-12-22 | 2007-09-19 | 中国南车集团株洲电力机车有限公司 | Control device for vacuum circuit breaker |
| CN101143566A (en) * | 2007-10-15 | 2008-03-19 | 株洲时代广创变流技术有限公司 | Locomotive accident isolating controlling method and device |
| CN102069726A (en) * | 2010-11-25 | 2011-05-25 | 北京控股磁悬浮技术发展有限公司 | Vehicle-mounted power system for low and medium-speed maglev train |
| CN205829132U (en) * | 2016-07-29 | 2016-12-21 | 中国神华能源股份有限公司 | A kind of LCU protection circuit of electric locomotive |
| CN205829292U (en) * | 2016-07-29 | 2016-12-21 | 中国神华能源股份有限公司 | A kind of automatic transition detection circuitry of electric locomotive |
| CN208386131U (en) * | 2018-07-05 | 2019-01-15 | 中车洛阳机车有限公司 | The auxiliary ground fault of locomotive quickly isolates device |
-
2018
- 2018-07-05 CN CN201810730329.1A patent/CN109038490A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101038826A (en) * | 2006-12-22 | 2007-09-19 | 中国南车集团株洲电力机车有限公司 | Control device for vacuum circuit breaker |
| CN101143566A (en) * | 2007-10-15 | 2008-03-19 | 株洲时代广创变流技术有限公司 | Locomotive accident isolating controlling method and device |
| CN102069726A (en) * | 2010-11-25 | 2011-05-25 | 北京控股磁悬浮技术发展有限公司 | Vehicle-mounted power system for low and medium-speed maglev train |
| CN205829132U (en) * | 2016-07-29 | 2016-12-21 | 中国神华能源股份有限公司 | A kind of LCU protection circuit of electric locomotive |
| CN205829292U (en) * | 2016-07-29 | 2016-12-21 | 中国神华能源股份有限公司 | A kind of automatic transition detection circuitry of electric locomotive |
| CN208386131U (en) * | 2018-07-05 | 2019-01-15 | 中车洛阳机车有限公司 | The auxiliary ground fault of locomotive quickly isolates device |
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