CN110723034A - High-power electric locomotive network side circuit and control method thereof - Google Patents
High-power electric locomotive network side circuit and control method thereof Download PDFInfo
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- CN110723034A CN110723034A CN201911042963.7A CN201911042963A CN110723034A CN 110723034 A CN110723034 A CN 110723034A CN 201911042963 A CN201911042963 A CN 201911042963A CN 110723034 A CN110723034 A CN 110723034A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
- B60M3/00—Feeding power to supply lines in contact with collector on vehicles; Arrangements for consuming regenerative power
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Abstract
The invention discloses a high-power electric locomotive network side circuit and a control method thereof, wherein the circuit comprises: the power supply units comprise a plurality of locomotive marshalls; wherein: the high voltage between the power supply units is not reconnected, and the high voltage between the multi-section locomotive marshalls in the power supply units is reconnected. The invention can solve the problem that the arc is easily drawn due to overlarge current without developing a high-voltage electric appliance again when the power of the electric locomotive is expanded.
Description
Technical Field
The invention relates to the technical field of rail transit, in particular to a high-power electric locomotive network side circuit and a control method thereof.
Background
Freight heavy load is the development direction of railway transportation in China and even in the world, and with the continuous development of railway freight, the requirement on traction power is continuously improved. The tradition has wide range of members in China, the requirements of railway transportation have diversity, and the traction power is configured with four shafts, six shafts, eight shafts, twelve shafts and other forms. There is an objective need to develop a flexible marshalling electric locomotive consist from the standpoint of power matching of the transport tractive fixed number, reduction of crew, and reduction of operating costs.
The main function of the network side circuit is to obtain electric energy from the network side and supply power to the primary side of the traction transformer, and the main functional components comprise a pantograph, a high-voltage isolating switch, a main circuit breaker, a grounding device and the like.
At present, a schematic diagram of a grid-side circuit of a typical locomotive (an eight-axle locomotive is taken as an example) is shown in fig. 1, and a schematic diagram of a grid-side circuit of an electric locomotive group is shown in fig. 2. As shown in fig. 1, when the locomotive normally works, 1 pantograph of the locomotive is lifted, and the corresponding 1 vacuum main circuit breaker is closed, and the whole locomotive is powered by 1 pantograph and the main circuit breaker. As shown in fig. 2, when the locomotive normally works, 1 pantograph of the locomotive is raised, the vacuum circuit breaker of each locomotive is closed, and the power of the whole locomotive is supplied by 1 pantograph and 3 vacuum circuit breakers.
Therefore, the network side circuit structure of the existing electric locomotive group is not suitable for locomotive marshalling expansion in the form of the network side circuit structure of the eight-axis locomotive, and can meet the requirement of marshalling expansion in the form of the network side circuit of the electric locomotive group, but adopts 1 pantograph and 1 high-voltage isolating switch to receive current; with the increase of the number of locomotive marshalling, such as 16 axles, 20 axles, 24 axles or more, the locomotive power is also increased, and the requirement on the network side circuit is higher and higher, such as the current passing through the pantograph and the high-voltage isolating switch is too large, the current needs to be redeveloped, and the risk of burning the network by the easy-to-draw arc exists.
Disclosure of Invention
In view of this, the present invention provides a network-side circuit of a high-power electric locomotive and a control method thereof, which can solve the problem that when the power of the electric locomotive is expanded, a high-voltage electrical appliance does not need to be re-developed, and the problem that an arc is easily drawn due to an excessive current.
The invention provides a network side circuit of a high-power electric locomotive, which comprises: a plurality of power supply units, wherein the power supply units comprise a plurality of locomotive consists; wherein:
the power supply units are not connected in a high-voltage mode;
and high-voltage reconnection is carried out between a plurality of locomotive marshalls in the power supply unit.
Preferably, two, three or four locomotive consists are included in the power supply unit.
Preferably, the locomotive consists are reconnected by high voltage jumpers.
Preferably, the locomotive consist comprises: vacuum circuit breakers and main transformers.
A method for controlling a grid-side circuit of a high-power electric locomotive is applied to the grid-side circuit of the high-power electric locomotive, and comprises the following steps:
identifying a locomotive consist number of the grid-side circuit of the high-power electric locomotive;
determining an axle mode based on the locomotive consist number;
and correspondingly controlling the locomotive marshalling of the high-power electric locomotive grid-side circuit by adopting a control mode corresponding to the shaft mode.
Preferably, said determining an axle mode based on said number of locomotive consists comprises:
judging whether the locomotive is in an eight-axis mode or not based on the locomotive marshalling number;
correspondingly, when the locomotive consist number is judged to be in the eight-axis mode, the correspondingly controlling the locomotive consist of the grid-side circuit of the high-power electric locomotive by adopting the control mode corresponding to the axis mode comprises the following steps:
and correspondingly controlling the locomotive marshalling of the grid-side circuit of the high-power electric locomotive in a control mode corresponding to the eight-axis mode.
Preferably, said determining an axle mode based on said number of locomotive consists comprises:
determining whether a 12-axle mode is provided based on the locomotive consist number;
correspondingly, when the locomotive consist number is judged to be in the 12-axis mode, the correspondingly controlling the locomotive consist of the grid-side circuit of the high-power electric locomotive by adopting the control mode corresponding to the axis mode comprises the following steps:
and correspondingly controlling the locomotive marshalling of the grid-side circuit of the high-power electric locomotive in a control mode corresponding to the 12-shaft mode.
Preferably, said determining an axle mode based on said number of locomotive consists comprises:
determining whether a 16-axle mode is present based on the locomotive consist number;
correspondingly, when the locomotive consist number is judged to be in a 16-axis mode, the correspondingly controlling the locomotive consist of the grid-side circuit of the high-power electric locomotive in a control mode corresponding to the axis mode comprises the following steps:
and correspondingly controlling the locomotive marshalling of the grid-side circuit of the high-power electric locomotive in a control mode corresponding to the 16-shaft mode.
Preferably, said determining an axle mode based on said number of locomotive consists comprises:
determining whether the locomotive is in a 20-axle mode based on the locomotive consist number;
correspondingly, when the locomotive consist number is judged to be in the 20-axle mode, the correspondingly controlling the locomotive consist of the grid-side circuit of the high-power electric locomotive in the control mode corresponding to the axle mode comprises the following steps:
and correspondingly controlling the locomotive marshalling of the high-power electric locomotive grid-side circuit by adopting a control mode corresponding to the 20-shaft mode.
Preferably, said determining an axle mode based on said number of locomotive consists comprises:
determining whether a 24-axle mode is provided based on the locomotive consist number;
correspondingly, when the locomotive consist number is judged to be in the 24-axle mode, the correspondingly controlling the locomotive consist of the grid-side circuit of the high-power electric locomotive in the control mode corresponding to the axle mode comprises the following steps:
and correspondingly controlling the locomotive marshalling of the grid-side circuit of the high-power electric locomotive in a control mode corresponding to the 24-shaft mode.
In summary, the present invention discloses a network side circuit of a high power electric locomotive, which includes: the power supply units comprise a plurality of locomotive marshalls; wherein: the power supply units are not connected in a high-voltage manner; high-voltage reconnection is carried out between a plurality of locomotive marshalls in the power supply unit. The invention can solve the problem that the arc is easily drawn due to overlarge current without developing a high-voltage electric appliance again when the power of the electric locomotive is expanded.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a main circuit of an eight-axle locomotive disclosed in the prior art;
FIG. 2 is a schematic diagram of a main circuit of an electric locomotive disclosed in the prior art;
FIG. 3 is a schematic diagram of a grid-side circuit of a high-power electric locomotive according to the present disclosure;
FIG. 4 is a schematic circuit diagram of the expandable unit 2 of FIG. 3 according to the present disclosure;
fig. 5 is a flowchart of a method for controlling a grid-side circuit of a high-power electric locomotive according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 3 and 4, the grid-side circuit of a high-power electric locomotive disclosed by the invention comprises: the power supply units comprise a plurality of locomotive marshalls; wherein: the power supply units are not connected in a high-voltage manner; high-voltage reconnection is carried out between a plurality of locomotive marshalls in the power supply unit. Each power supply unit can comprise two, three or four sections of locomotive marshalls, and each locomotive marshalling can comprise a vacuum circuit breaker and a main transformer.
The working principle of the network side circuit of the high-power electric locomotive disclosed by the embodiment is as follows: the high-power electric locomotive network side circuit adopts a locomotive marshalling high-voltage reconnection mode in the power supply unit and a high-voltage non-reconnection mode between the power supply units, and flexible marshalling of the locomotives is realized by increasing or decreasing the marshalling of the locomotives in the power supply unit and increasing or decreasing the power supply units. For example, when an 8-axle locomotive mode is to be implemented, then the A-section locomotive consist and the B-section locomotive consist reconnection are used, when a 12-axle mode is to be implemented, the A-section locomotive consist, the B-section locomotive consist and the C1-section locomotive consist reconnection are used, and when a 16-axle mode is to be implemented, the A-section locomotive consist, the C2-section locomotive consist, the C-section locomotive consist are usedN-1The locomotive consists of two sections, namely, a locomotive consist A, a locomotive consist C1, a locomotive consist C2 and a locomotive consist C2 when a 20-axle mode is required to be realizedN-1The locomotive consists of two sections, namely, a locomotive consist A, a locomotive consist C1, a locomotive consist C2 and a locomotive consist C2 when a 24-axle mode is requiredN-1Node locomotive marshalling, CNThe locomotive consists and the locomotive consist B are coupled in series, and so on, the locomotive is ensured to have the locomotive consist A and the locomotive consist B, so that the locomotive can run in two directions; the network side circuit requirement of the locomotive with 24 axles and more is met, the high-voltage electrical appliance of the electric locomotive does not need to be re-developed, the current of the pantograph is consistent with that of the existing locomotive, and the problem of overlarge arc discharge of the current is solved.
In conclusion, the grid-side circuit of the high-power electric locomotive disclosed by the invention can realize the extension of the marshalling form of the electric locomotive, a plurality of power supply units are adopted, each power supply unit can be formed by a plurality of marshalling and is in high-voltage reconnection, and the high voltage among the power supply units is not in reconnection, so that the high-voltage electric appliance can continue to use the existing product without redevelopment; after the marshalling form of the electric locomotive is expanded, the current of the pantograph is consistent with that of the existing locomotive, and the problem of overlarge current and arc discharge is solved; the flexible switching of the electric locomotive marshalling can be realized, the power expansion can be realized in the same power supply unit, the power expansion can also be realized among the power supply units, the marshalling form of 8 shafts, 12 shafts, 16 shafts, 20 shafts, 24 shafts or more shafts is realized, the limitation of the total power of the locomotive is avoided, and the matching of the traction fixed number and the power is realized.
As shown in fig. 5, the method for controlling a grid-side circuit of a high-power electric locomotive disclosed by the present invention is applied to a grid-side circuit of a high-power electric locomotive, and the method may include the following steps:
s501, identifying the locomotive marshalling number of the network side circuit of the high-power electric locomotive;
s502, determining an axle mode based on the number of locomotive marshalls;
s503, correspondingly controlling the locomotive marshalling of the high-power electric locomotive grid-side circuit by adopting a control mode corresponding to the axle mode.
When the grid side circuit of the high-power electric locomotive is controlled, after an electric locomotive group is electrified, the locomotive marshalling number of the grid side circuit of the high-power electric locomotive is automatically identified, then an axle mode is determined according to the identified locomotive marshalling number, then the states of a pantograph and a vacuum circuit breaker are judged, independent pantograph-lifting control is carried out on each power supply unit by adopting a control mode corresponding to the axle mode, and independent vacuum circuit breaker closing control is carried out on each locomotive marshalling.
Specifically, when the grid-side circuit of the high-power electric locomotive is controlled, whether the locomotive is in an eight-axis mode is judged according to the recognized number of the locomotive marshalling, and when the locomotive is in the eight-axis mode, independent pantograph-lifting control is performed on each power supply unit by adopting a control mode corresponding to the eight-axis mode, and independent closing vacuum circuit breaker control is performed on each locomotive marshalling;
when the number of the locomotive marshalling is judged not to be the eight-axis mode, whether the number of the locomotive marshalling is the 12-axis mode is further judged, and when the number of the locomotive marshalling is judged to be the 12-axis mode, independent pantograph-lifting control is carried out on each power supply unit by adopting a control mode corresponding to the 12-axis mode, and independent vacuum circuit breaker closing control is carried out on each locomotive marshalling;
when the number of the locomotive marshalling is judged not to be in the 12-shaft mode, whether the number of the locomotive marshalling is in the 16-shaft mode is further judged, and when the number of the locomotive marshalling is judged to be in the 16-shaft mode, independent pantograph-lifting control is carried out on each power supply unit by adopting a control mode corresponding to the 16-shaft mode, and independent vacuum circuit breaker closing control is carried out on each locomotive marshalling;
when the number of the locomotive marshalling is judged not to be in the 16-axis mode, whether the number of the locomotive marshalling is in the 20-axis mode is further judged, and when the number of the locomotive marshalling is judged to be in the 20-axis mode, independent pantograph-lifting control is carried out on each power supply unit in a control mode corresponding to the 20-axis mode, and independent vacuum circuit breaker closing control is carried out on each locomotive marshalling;
when the number of the locomotive marshalling is judged not to be the 20-shaft mode, whether the number of the locomotive marshalling is the 24-shaft mode is further judged, and when the number of the locomotive marshalling is judged to be the 24-shaft mode, independent pantograph-lifting control is carried out on each power supply unit by adopting a control mode corresponding to the 24-shaft mode, and independent vacuum circuit breaker closing control is carried out on each locomotive marshalling.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A grid-side circuit of a high-power electric locomotive, comprising: a plurality of power supply units, wherein the power supply units comprise a plurality of locomotive consists; wherein:
the power supply units are not connected in a high-voltage mode;
and high-voltage reconnection is carried out between a plurality of locomotive marshalls in the power supply unit.
2. The high power electric locomotive grid-side circuit according to claim 1, characterized in that two, three or four locomotive consists are included in the power supply unit.
3. The high power electric locomotive grid-side circuit according to claim 1, wherein the locomotive consists are reconnected by high voltage jumpers.
4. The high power electric locomotive grid-side circuit according to claim 1, wherein the locomotive consist comprises: vacuum circuit breakers and main transformers.
5. A method for controlling a grid-side circuit of a high-power electric locomotive is applied to the grid-side circuit of the high-power electric locomotive, and comprises the following steps:
identifying a locomotive consist number of the grid-side circuit of the high-power electric locomotive;
determining an axle mode based on the locomotive consist number;
and correspondingly controlling the locomotive marshalling of the high-power electric locomotive grid-side circuit by adopting a control mode corresponding to the shaft mode.
6. The method of claim 5, wherein determining an axle mode based on the number of locomotive consists comprises:
judging whether the locomotive is in an eight-axis mode or not based on the locomotive marshalling number;
correspondingly, when the locomotive consist number is judged to be in the eight-axis mode, the correspondingly controlling the locomotive consist of the grid-side circuit of the high-power electric locomotive by adopting the control mode corresponding to the axis mode comprises the following steps:
and correspondingly controlling the locomotive marshalling of the grid-side circuit of the high-power electric locomotive in a control mode corresponding to the eight-axis mode.
7. The method of claim 5, wherein determining an axle mode based on the number of locomotive consists comprises:
determining whether a 12-axle mode is provided based on the locomotive consist number;
correspondingly, when the locomotive consist number is judged to be in the 12-axis mode, the correspondingly controlling the locomotive consist of the grid-side circuit of the high-power electric locomotive by adopting the control mode corresponding to the axis mode comprises the following steps:
and correspondingly controlling the locomotive marshalling of the grid-side circuit of the high-power electric locomotive in a control mode corresponding to the 12-shaft mode.
8. The method of claim 5, wherein determining an axle mode based on the number of locomotive consists comprises:
determining whether a 16-axle mode is present based on the locomotive consist number;
correspondingly, when the locomotive consist number is judged to be in a 16-axis mode, the correspondingly controlling the locomotive consist of the grid-side circuit of the high-power electric locomotive in a control mode corresponding to the axis mode comprises the following steps:
and correspondingly controlling the locomotive marshalling of the grid-side circuit of the high-power electric locomotive in a control mode corresponding to the 16-shaft mode.
9. The method of claim 5, wherein determining an axle mode based on the number of locomotive consists comprises:
determining whether the locomotive is in a 20-axle mode based on the locomotive consist number;
correspondingly, when the locomotive consist number is judged to be in the 20-axle mode, the correspondingly controlling the locomotive consist of the grid-side circuit of the high-power electric locomotive in the control mode corresponding to the axle mode comprises the following steps:
and correspondingly controlling the locomotive marshalling of the high-power electric locomotive grid-side circuit by adopting a control mode corresponding to the 20-shaft mode.
10. The method of claim 5, wherein determining an axle mode based on the number of locomotive consists comprises:
determining whether a 24-axle mode is provided based on the locomotive consist number;
correspondingly, when the locomotive consist number is judged to be in the 24-axle mode, the correspondingly controlling the locomotive consist of the grid-side circuit of the high-power electric locomotive in the control mode corresponding to the axle mode comprises the following steps:
and correspondingly controlling the locomotive marshalling of the grid-side circuit of the high-power electric locomotive in a control mode corresponding to the 24-shaft mode.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911042963.7A CN110723034A (en) | 2019-10-29 | 2019-10-29 | High-power electric locomotive network side circuit and control method thereof |
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| CN201911042963.7A CN110723034A (en) | 2019-10-29 | 2019-10-29 | High-power electric locomotive network side circuit and control method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021259283A1 (en) * | 2020-06-24 | 2021-12-30 | 比亚迪股份有限公司 | Charging control method for rail vehicle, rail vehicle, charging station, and charging system |
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| CN202880754U (en) * | 2012-06-04 | 2013-04-17 | 中铁第四勘察设计院集团有限公司 | Automatic automatic aligment control device of unwheeling machine compatible with two types of bullet trains of eight marshaling or sixteen marshaling |
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Application publication date: 20200124 |