CN108001485A - Automatic identification and automatic cutting method after a kind of electric locomotive assistant load ground connection - Google Patents
Automatic identification and automatic cutting method after a kind of electric locomotive assistant load ground connection Download PDFInfo
- Publication number
- CN108001485A CN108001485A CN201610933759.4A CN201610933759A CN108001485A CN 108001485 A CN108001485 A CN 108001485A CN 201610933759 A CN201610933759 A CN 201610933759A CN 108001485 A CN108001485 A CN 108001485A
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- China
- Prior art keywords
- load
- failure
- ground connection
- assistant load
- assistant
- Prior art date
- 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.)
- Granted
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- 230000003137 locomotive effect Effects 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000007689 inspection Methods 0.000 claims abstract description 13
- 238000001514 detection method Methods 0.000 claims description 6
- 229910017313 Mo—Co Inorganic materials 0.000 claims description 4
- 239000003426 co-catalyst Substances 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L23/00—Control, warning or like safety means along the route or between vehicles or trains
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61C—LOCOMOTIVES; MOTOR RAILCARS
- B61C17/00—Arrangement or disposition of parts; Details or accessories not otherwise provided for; Use of control gear and control systems
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Transportation (AREA)
- Power Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
This example provides the automatic identification after a kind of electric locomotive assistant load is grounded and automatic cutting method, effectively the assistant load being grounded can be identified and be cut off using the method, its auxiliary system uses specific control logic, when subordinate inverter normally starts, six assistant loads in parallel pass through respective contactor sequence starting, mutual startup time interval 3 seconds.When earth fault occurs, three sections of conventional resistance-type grounded inspection circuits are coordinated by switching control of the control unit to assistant load, reach the function of setting and cut off to ground connection load so that failure will not be further enlarged.
Description
Technical field
After electric locomotive auxiliary converter system technology, more particularly to a kind of electric locomotive assistant load ground connection
Automatic identification and automatic cutting method.
Background technology
In the world today, electric locomotive has marched toward the AC Drive epoch from the DC Transmission epoch, electric locomotive also because
This has moved towards the high-speed overload stage, obtains unprecedented development.Auxiliary system as electric locomotive important component,
Played a crucial role in locomotive operation, meanwhile, when the earth fault of assistant load is also in locomotive day-to-day operation
There is generation.
At present, in electric locomotive auxiliary converter system, assistant load is powered using three-phase inverter, auxiliary is negative
Carry the output terminal for being connected in parallel to inverter.Since circuit of electric locomotive is complicated, installation space is smaller, therefore, it is impossible to give
Each assistant load is equipped with current transformer or sensor.Although add three sections of resistance-types in the direct-flow input end of inverter to connect
Ground detection circuit, can be to being detected after carrying ground, but if has a generation in several assistant loads in parallel
Ground connection, conventional auxiliary system can not be identified and cut off to the load of ground connection, and earth fault can further expand, and cause whole
Inverter can not work normally.
The content of the invention
Present invention is the automatic identification after a kind of electric locomotive assistant load ground connection and automatic cutting method, passes through machine
Car closes the control logic of co-host break three times, coordinates three sections of resistive bridge grounded inspection circuits of locomotive, to realize that assistant load is grounded
Automatic identification afterwards and excision.
Automatic identification and automatic cutting method after a kind of electric locomotive assistant load ground connection, it is characterised in that work as locomotive
Main circuit breaker is closed, AuCT starts, assistant load sequence starting, when grounded inspection circuit has detected earth fault,
It is disconnected main disconnected, stop AuCT, reporting fault, records the title of previous assistant load, close main circuit breaker again, auxiliary becomes
Stream device is again started up, assistant load sequence starting again：
One kind starts does not detect ground connection for detection circuit,
Locomotive normal operation, failure judgement are failure living；
It is that master of breaking is disconnected, stops AuCT when grounded inspection circuit has detected earth fault again that one kind, which starts,
Reporting fault again, records the title of previous assistant load, control unit judge twice load fault whether be
Same load,
Failure occurs to be grounded for the load in same load, positioning both ground point,
Co-host break is closed, starts AuCT, load fault is not put into, other Mo-Co catalysts start,
Failure occurs in different loads, is complexity failure, breaks main disconnected, stops AuCT.
Further, when the earth fault occurs, coordinated by switching control of the control unit to assistant load normal
Rule three sections of resistance-type grounded inspection circuits, reach to ground connection load the function of setting and cut off so that failure will not by into
One step expands.
Further, the assistant load is put into by respective contactor order, and spaced is 3 seconds, negative to be grounded
Surplus has been stopped in the detection and positioning of load.
Further, by aiding in control logic and the identification computing of described control unit, failure judgement and positioning are reached
Failure, the final purpose for realizing excision failure.
Brief description of the drawings
Fig. 1 uses inverter power supply circuit diagram for a kind of locomotive assisting system of the present invention；
Fig. 2 is the automatic identification and automatic cutting method flow chart after a kind of electric locomotive assistant load is grounded.
Specific embodiment
Automatic identification and automatic cutting method after being grounded the present invention relates to a kind of electric locomotive assistant load, now pass through tool
Body embodiment describes in detail.
Fig. 1 uses inverter power supply circuit diagram for a kind of locomotive assisting system of the present invention, as shown in Figure 1, a kind of
Automatic identification after electric locomotive assistant load ground connection and a kind of locomotive assisting system involved in automatic cutting method are using inverse
Become device power supply, the output terminal of inverter is connected in parallel to by six accessory fans, each be equipped with starting contactor, in auxiliary system
Between in circuit equipped with three sections of resistive bridge grounded inspection circuits, for detecting the voltage condition of intermediate DC link circuit, reach
To the purpose of earthing detection.
When auxiliary system in the present invention normally starts, main circuit breaker of railway engine closure, inverter startup, then, six auxiliary
Help Mo-Co catalyst to start, between at intervals of 3 seconds.After a certain load is put into, grounded inspection circuit detects ground connection, breaks
It is main disconnected, stop AuCT, reporting fault and the input node for recording auxiliary, after 5 seconds, close co-host break again, start auxiliary
Inverter, assistant load sequence starting again, if without grounding alarm, it is believed that it is failure living, locomotive normal operation.When
When grounding alarm occurring again, to break again main disconnected, stop AuCT again, reporting fault name records the input node of auxiliary,
Malfunctioning node twice is judged by control unit, if same node, confirms as real failure, after positioning failure,
Co-host break is closed again, starts subordinate inverter, and load just no longer puts into the assistant load being positioned in starting, and reaches ground connection load
The purpose of excision.Flow chart is as shown in Figure 2.When locomotive closes main circuit breaker, AuCT starts, and assistant load order opens
Dynamic, when grounded inspection circuit has detected earth fault, master of breaking is disconnected, stops AuCT, reporting fault, records previous auxiliary
The title of load, closes main circuit breaker again, and AuCT is again started up, assistant load sequence starting again：
One kind starts does not detect ground connection, locomotive normal operation for detection circuit, and failure judgement is failure living；
It is that master of breaking is disconnected, stops AuCT, again when grounded inspection circuit has detected earth fault again that one kind, which starts,
Reporting fault, records the title of previous assistant load, and control unit judges whether load fault is same load twice, failure
Occur to be grounded for the load in same load, positioning both ground point, close co-host break, start AuCT, load fault is not
Input, other Mo-Co catalysts start, and failure occurs in different loads, is complexity failure, break main disconnected, stop AuCT.
Finally it should be noted that：Implement structure above to be merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
Pipe is described in detail the present invention with reference to foregoing implementation structure, it will be understood by those of ordinary skill in the art that：Its according to
It can so modify to the technical solution described in foregoing embodiments, or which part technical characteristic is equally replaced
Change；And these modifications or replacement, the essence of appropriate technical solution is departed from each implementation structure technology scheme of the present invention
Spirit and scope.
Claims (4)
1. automatic identification and automatic cutting method after a kind of electric locomotive assistant load ground connection, it is characterised in that when locomotive closes
Co-host break road device, AuCT start, assistant load sequence starting, when grounded inspection circuit has detected earth fault, break
It is main disconnected, stop AuCT, reporting fault, records the title of previous assistant load, close main circuit breaker, auxiliary converter again
Device is again started up, assistant load sequence starting again：
One kind starts does not detect ground connection, locomotive normal operation for detection circuit, and failure judgement is failure living；
It is that master of breaking is disconnected, stops AuCT, reports again when grounded inspection circuit has detected earth fault again that one kind, which starts,
Failure, records the title of previous assistant load, and control unit judges whether load fault is same load twice, and failure occurs
In same load, positioning both ground point is grounded for the load, closes co-host break, starts AuCT, and load fault is not put into,
Other Mo-Co catalysts start, and failure occurs in different loads, is complexity failure, break main disconnected, stop AuCT.
2. automatic identification and automatic cutting method after a kind of electric locomotive assistant load ground connection according to claim 1,
It is characterized in that, when the earth fault occurs, conventional three are coordinated by switching control of the control unit to assistant load
Section resistance-type grounded inspection circuit, reaches the function of setting and cut off to ground connection load so that failure will not further be expanded
Greatly.
3. automatic identification and automatic cutting method after a kind of electric locomotive assistant load ground connection according to claim 1,
It is characterized in that, the assistant load is put into by respective contactor order, spaced is 3 seconds, for the inspection of ground connection load
Survey and surplus has been stopped in positioning.
4. automatic identification and automatic cutting method after a kind of electric locomotive assistant load ground connection according to claim 1,
It is characterized in that, control logic and identification computing by aiding in described control unit, reach failure judgement and positioning failure, most
The purpose of excision failure is realized eventually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610933759.4A CN108001485B (en) | 2016-10-31 | 2016-10-31 | Automatic identification and automatic cutting method after a kind of electric locomotive assistant load ground connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610933759.4A CN108001485B (en) | 2016-10-31 | 2016-10-31 | Automatic identification and automatic cutting method after a kind of electric locomotive assistant load ground connection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108001485A true CN108001485A (en) | 2018-05-08 |
| CN108001485B CN108001485B (en) | 2019-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610933759.4A Active CN108001485B (en) | 2016-10-31 | 2016-10-31 | Automatic identification and automatic cutting method after a kind of electric locomotive assistant load ground connection |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111884247A (en) * | 2019-08-19 | 2020-11-03 | 株洲中车时代电气股份有限公司 | Circuit structure and fault processing method and device thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101261301A (en) * | 2008-04-18 | 2008-09-10 | 南车株洲电力机车有限公司 | Locomotive control loop grounding detection circuit and grounding detection method and wire break detection method |
| CN101609124A (en) * | 2009-07-03 | 2009-12-23 | 株洲南车时代电气股份有限公司 | A kind of ground detecting method of power supply system of train |
| CN103770650A (en) * | 2012-10-22 | 2014-05-07 | 中国北车集团大同电力机车有限责任公司 | Locomotive traction and auxiliary system integrated grounding protection device |
| JP5774351B2 (en) * | 2011-04-12 | 2015-09-09 | 株式会社東芝 | Electric car system |
| CN106026053A (en) * | 2016-08-02 | 2016-10-12 | 辽宁拓新电力电子有限公司 | Single phase earth fault positioning and isolating system and method based on low-excitation impedance transformer |
-
2016
- 2016-10-31 CN CN201610933759.4A patent/CN108001485B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101261301A (en) * | 2008-04-18 | 2008-09-10 | 南车株洲电力机车有限公司 | Locomotive control loop grounding detection circuit and grounding detection method and wire break detection method |
| CN101609124A (en) * | 2009-07-03 | 2009-12-23 | 株洲南车时代电气股份有限公司 | A kind of ground detecting method of power supply system of train |
| JP5774351B2 (en) * | 2011-04-12 | 2015-09-09 | 株式会社東芝 | Electric car system |
| CN103770650A (en) * | 2012-10-22 | 2014-05-07 | 中国北车集团大同电力机车有限责任公司 | Locomotive traction and auxiliary system integrated grounding protection device |
| CN106026053A (en) * | 2016-08-02 | 2016-10-12 | 辽宁拓新电力电子有限公司 | Single phase earth fault positioning and isolating system and method based on low-excitation impedance transformer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111884247A (en) * | 2019-08-19 | 2020-11-03 | 株洲中车时代电气股份有限公司 | Circuit structure and fault processing method and device thereof |
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| Publication number | Publication date |
|---|---|
| CN108001485B (en) | 2019-11-05 |
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