Fully automatic driving high-voltage system suitable for flexible marshalling

Abstract

A fully automatic driving high-voltage system suitable for flexible marshalling, the system comprising pantographs (1), high-voltage buses (2), traction units (3), train-level main circuit breakers (4), unit-level main circuit breakers (5), a monitoring module and a control module, wherein the train-level main circuit breakers (4) are connected between the pantographs (1) and the high-voltage buses (2); the unit-level main circuit breakers (5) are connected between the high-voltage buses (2) and the traction units (3); the monitoring module monitors the operating state of each device in the system and feeds back a monitoring result to the control module; and the control module controls the train-level main circuit breakers (4) and the unit-level main circuit breakers (5) on the basis of the monitoring result. Compared with a conventional high-voltage system, protection operations are graded, and availability in a driverless mode is increased.

Description

A fully automatic driving high-voltage system suitable for flexible formation

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application number 2024100564900, filed with the Patent Office of China on January 15, 2024, entitled “A fully automatic driving high-voltage system suitable for flexible formation”, the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application belongs to the field of rail transportation, and in particular relates to a fully automatic driving high-voltage system suitable for flexible formation. Background Art

[0004] The current high-voltage topology of EMUs uses a centralized control scheme for main circuit breakers. Any failure in any traction unit or high-voltage unit in the vehicle will cause the main circuit breaker to disconnect, causing the vehicle to lose power and ultimately requiring manual intervention.

[0005] Summary of the Invention

[0006] Based on EMU operating experience, traction unit failures frequently cause main circuit breakers to trip. In view of this, the purpose of this application is to provide a fully automated high-voltage system suitable for flexible train formations. Compared to traditional high-voltage systems, this system features hierarchical protection operations and improved availability in unmanned mode.

[0007] The present application provides a fully automatic driving high-voltage system suitable for flexible marshaling, comprising a pantograph, a high-voltage busbar, a traction unit, a train-level main circuit breaker, a unit-level main circuit breaker, a monitoring module, and a control module;

[0008] The train-level main circuit breaker is connected between the pantograph and the high-voltage bus;

[0009] The unit-level main circuit breaker is connected between the high-voltage bus and the traction unit;

[0010] The monitoring module monitors the working status of each device in the system and feeds back the monitoring results to the control module;

[0011] The control module controls the train-level main circuit breaker and the unit-level main circuit breaker based on the monitoring result.

[0012] Furthermore, when the monitoring module detects that the traction unit has a fault, the control module controls the corresponding unit-level main circuit breaker to be disconnected;

[0013] When the monitoring module detects that the high-voltage bus has a fault, the control module controls the corresponding train-level main circuit breaker to be disconnected;

[0014] When the monitoring module detects that the traction unit has a fault and the unit-level main circuit breaker has a fault, the control module controls the corresponding train-level main circuit breaker to be disconnected.

[0015] Furthermore, the fully automatic driving high-voltage system suitable for flexible marshaling further includes a high-voltage disconnector, wherein the high-voltage disconnector is connected to the high-voltage bus;

[0016] When the monitoring module detects that the high-voltage bus has a fault, the control module controls the corresponding high-voltage disconnector to be disconnected;

[0017] When the monitoring module detects that the high-voltage busbar and the high-voltage disconnector are faulty, the control module controls the corresponding train-level main circuit breaker to be disconnected.

[0018] Furthermore, the high-voltage disconnector is connected between two adjacent train-level main circuit breakers.

[0019] Furthermore, the high-voltage disconnect switch is connected between the train-level main circuit breaker and the unit-level main circuit breaker.

[0020] Furthermore, the traction unit includes a traction transformer and a traction converter, and the fault in the traction unit includes a fault in the traction transformer, a fault in the traction converter, and a fault in other components in the traction unit.

[0021] Furthermore, the faults of the high-voltage bus include faults caused by grounding of the high-voltage bus, faults caused by short circuit of the high-voltage bus, faults caused by overcurrent of the high-voltage bus, and other faults that may occur in the high-voltage bus.

[0022] Furthermore, when the monitoring module detects that the train is in a fault state, the control module controls the corresponding train-level main circuit breaker to be disconnected.

[0023] Furthermore, the train-level main circuit breaker and the unit-level main circuit breaker are both AC main circuit breakers.

[0024] Furthermore, the number of the unit-level main circuit breakers is not the same as the number of the traction units.

[0025] The beneficial effects that this application can achieve:

[0026] 1. Compared to traditional high-voltage systems, a unit-level main circuit breaker is installed between the high-voltage busbar and the traction unit. This not only provides precise protection for the traction unit, but also reduces the power loss to a certain extent when a fault occurs, thus improving availability in unmanned driving mode.

[0027] 2. By installing a high-voltage disconnector in the high-voltage busbar, three-level monitoring and three-level precise protection of the entire high-voltage system are achieved, further improving the availability in unmanned driving mode.

[0028] 3. Due to the high requirements of the unmanned driving mode for fault warning and response speed, the traditional high-voltage system has no tolerance for misjudgment or temporary faults. The high-voltage system provided by the present invention only needs to disconnect the relevant components when a device failure occurs, and the system continues to operate, leaving the possibility for misjudgment and recovery of device failures.

[0029] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] FIG1 is a schematic diagram of a fully automatic driving high-voltage system suitable for flexible formation provided by the present invention;

[0031] FIG2 is a schematic diagram of another fully automatic driving high-voltage system suitable for flexible formation provided by the present invention

[0032] FIG3 is a schematic diagram of another fully automatic driving high-voltage system suitable for flexible formation provided by the present invention

[0033] FIG4 is a schematic diagram of another fully automatic driving high-voltage system suitable for flexible formation provided by the present invention

[0034] FIG5 is a schematic diagram of another fully automatic driving high-voltage system suitable for flexible formation provided by the present invention

[0035] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0036] Explanation of main component symbols: 1- pantograph; 2- high-voltage busbar; 3- traction unit; 4- train-level main circuit breaker; 5- unit-level main circuit breaker; 6- high-voltage disconnector; 31- first traction unit; 32- second traction unit; 33- third traction unit; 34- fourth traction unit; 11- first pantograph; 12- second pantograph; 41- first train-level main circuit breaker; 42- second train-level main circuit breaker. DETAILED DESCRIPTION

[0037] The term "comprising" in the specification, claims, and drawings of this application is synonymous with "including," "containing," or "characterized by," and is inclusive or open-ended and does not exclude additional unrecited elements or method steps. "Comprising" is a technical term used in claim language to mean that the recited elements are present, but other elements may be added and still form a structure or method within the scope of the claim.

[0038] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments of the present application and the features therein may be combined with each other.

[0039] The following description sets forth numerous specific details to facilitate a thorough understanding of the present invention. The embodiments described are merely some, not all, of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are intended to fall within the scope of protection of the present invention.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in this specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0041] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0042] As shown in Figure 1, this embodiment provides a fully automatic driving high-voltage system suitable for flexible formation, including two pantographs 1, a high-voltage busbar 2, a traction unit 3, a train-level main circuit breaker 4 and a unit-level main circuit breaker 5.

[0043] Each adjacent two EMU carriages are provided with a traction unit 3, which includes a traction transformer and a traction converter. Each traction unit 3 is correspondingly equipped with a unit-level main circuit breaker 5.

[0044] Each pantograph 1 is correspondingly equipped with a train-level main circuit breaker 4 .

[0045] Both the train-level main circuit breaker 4 and the unit-level main circuit breaker 5 are AC main circuit breakers.

[0046] The pantograph 1 can be controlled to raise and lower. When raised, its input contacts the grid, receiving current from the grid to power the train. The output of the pantograph 1 is connected to the input of the high-voltage busbar 2 via the train-level main circuit breaker 4. The output of the high-voltage busbar 2 is connected to the input of the traction transformer via the unit-level main circuit breaker 5. The output of the traction transformer is connected to the input of the traction converter. The output of the traction converter is connected to the train power unit.

[0047] This fully automated high-voltage system for flexible train formations also includes a monitoring module and a control module. The monitoring module monitors the operating status of each component within the system and feeds the results back to the control module. The control module controls the train-level main circuit breaker 4 and the unit-level main circuit breaker 5 based on the monitoring results.

[0048] When the monitoring module detects that there is a fault in the traction transformer, a fault in the traction converter, or a fault in other components in the traction unit 3 , the control module controls the corresponding unit-level main circuit breaker 5 to be disconnected.

[0049] When the monitoring module detects a fault caused by grounding of the high-voltage bus 2, a fault caused by a short circuit of the high-voltage bus 2, a fault caused by overcurrent of the high-voltage bus 2, or other faults that may occur in the high-voltage bus 2, the control module controls the corresponding train-level main circuit breaker 4 to disconnect.

[0050] When the monitoring module detects that there is a fault in the traction unit 3 and a fault in the unit-level main circuit breaker 5 , the control module controls the corresponding train-level main circuit breaker 4 to be disconnected.

[0051] In some other embodiments, the number of pantographs 1 can be adaptively adjusted, such as three, four or six.

[0052] In some other embodiments, the monitoring module and the control module may be integrated into a train network control system TCMS.

[0053] In some other embodiments, as shown in FIG2 , the fully automatic driving high-voltage system for flexible train formation further includes a high-voltage disconnector 6, which is connected to the high-voltage bus 2. Specifically, the high-voltage disconnector 6 is connected between two adjacent train-level main circuit breakers 4.

[0054] When the monitoring module detects a fault caused by grounding of the high-voltage bus 2, a fault caused by a short circuit of the high-voltage bus 2, a fault caused by overcurrent of the high-voltage bus 2, or other faults that may occur in the high-voltage bus 2, the control module controls the corresponding high-voltage isolating switch 6 to disconnect.

[0055] When the monitoring module detects that the high-voltage busbar 2 and the high-voltage disconnector 6 are faulty, the control module controls the corresponding train-level main circuit breaker 4 to be disconnected.

[0056] In some other embodiments, as shown in FIG. 3 and FIG. 4 , the high-voltage disconnector 6 is connected between the train-level main circuit breaker 4 and the unit-level main circuit breaker 5 .

[0057] In some other embodiments, not every traction unit 3 is correspondingly equipped with a unit-level main circuit breaker 5 , that is, not every traction unit 3 is provided with a unit-level main circuit breaker 5 between the high-voltage busbar 2 .

[0058] Specifically, for example, if there are eight EMU carriages, as shown in Figure 5 , each pair of adjacent EMU carriages is equipped with a traction unit 3, which in turn includes a first traction unit 31, a second traction unit 32, a third traction unit 33, and a fourth traction unit 34. Furthermore, there are two pantographs 1, which in turn include a first pantograph 11 and a second pantograph 12. Furthermore, there are two train-level main circuit breakers 4, which in turn include a first train-level main circuit breaker 41 and a second train-level main circuit breaker 42. Furthermore, there are also two isolating high-voltage switches and two unit-level main circuit breakers 5.

[0059] The output end of the first pantograph 11 is connected to the input end of the first train-level main circuit breaker 41, the output end of the second pantograph 12 is connected to the input end of the second train-level main circuit breaker 42, the output ends of the first train-level main circuit breaker 41 and the second train-level main circuit breaker 42 are both connected to the high-voltage bus 2, and the output end of the high-voltage bus 2 is connected to the first traction unit 31, the second traction unit 32, the third traction unit 33 and the fourth traction unit 34 in sequence.

[0060] The two high-voltage disconnectors 6 are respectively located on the high-voltage busbar 2 between the first train-level main circuit breaker 41 and the first traction unit 31 and the high-voltage busbar 2 between the second train-level main circuit breaker 42 and the fourth traction unit 34 .

[0061] The two unit-level main circuit breakers 5 are respectively located between the high-voltage busbar 2 and the second traction unit 32 and between the high-voltage busbar 2 and the third traction unit 33 .

[0062] When the monitoring module detects that the second traction unit 32 or the third traction unit 33 has a fault, the control module controls the corresponding unit-level main circuit breaker 5 to be disconnected.

[0063] When the monitoring module detects that the first traction unit 31 or the fourth traction unit 34 has a fault, the control module controls the corresponding high-voltage isolation switch 6 to be disconnected.

[0064] In addition, when the monitoring module detects a fault caused by grounding of the high-voltage bus 2, a fault caused by a short circuit of the high-voltage bus 2, a fault caused by overcurrent of the high-voltage bus 2, and other faults that may occur in the high-voltage bus 2, the control module controls the corresponding high-voltage disconnector 6 and / or the unit-level main circuit breaker 5 to disconnect, or controls the first train-level main circuit breaker 41 and / or the second train-level main circuit breaker 42 to disconnect.

[0065] The two high-voltage disconnectors 6 serve not only as protection devices for isolating the high voltage, but also as protection devices for the traction units 3 located at both ends of the train, thereby improving the utilization efficiency of the high-voltage system.

[0066] In some other embodiments, different lines within the same region can utilize vehicles with different speed ratings and different train formations, depending on the specific conditions of the network. To meet the needs of diverse users, the platform utilizes a flexible train formation design concept, with vehicles developed on the same product platform. Some spare parts can be shared, reducing maintenance costs and achieving a platform-based, modular, standardized, and serialized design.

[0067] The above is a detailed introduction to the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application.

[0068] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference to the accompanying figures in the claims should not be regarded as limiting the claims involved. In addition, it is obvious that the word "comprising" does not exclude other units or steps, and the singular does not exclude the plural. Multiple units or devices stated in the system claim may also be implemented by one unit or device through software or hardware. The words first, second, etc. are used to indicate names and do not indicate any particular order.

[0069] At the same time, for those skilled in the art, according to the concept of this application, there may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting this application.

Claims

1. A fully automatic driving high-voltage system applicable to flexible formation, characterized in that, It includes a pantograph, a high-voltage bus, a traction unit, a train-level main circuit breaker, a unit-level main circuit breaker, a monitoring module and a control module. The train-level main circuit breaker is connected between the pantograph and the high-voltage bus. The unit-level main circuit breaker is connected between the high-voltage bus and the traction unit. The monitoring module monitors the working states of all devices in the system and feeds back the monitoring results to the control module. The control module controls the train-level main circuit breaker and the unit-level main circuit breaker based on the monitoring results.

2. The fully automatic driving high-voltage system applicable to flexible formation according to claim 1, wherein when the monitoring module monitors that there is a fault in the traction unit, the control module controls the corresponding unit-level main circuit breaker to trip. when the monitoring module monitors that there is a fault in the high-voltage bus, the control module controls the corresponding train-level main circuit breaker to trip. when the monitoring module monitors that there is a fault in the traction unit and the unit-level main circuit breaker has a fault, the control module controls the corresponding train-level main circuit breaker to trip.

3. The full-automatic driving high-voltage system applicable to flexible formation according to claim 2, characterized in that It further includes a high-voltage disconnector, and the high-voltage disconnector is connected in the high-voltage bus. when the monitoring module monitors that there is a fault in the high-voltage bus, the control module controls the corresponding high-voltage disconnector to trip. when the monitoring module monitors that there is a fault in the high-voltage bus and the high-voltage disconnector has a fault, the control module controls the corresponding train-level main circuit breaker to trip.

4. A fully automatic driving high-voltage system applicable to flexible formation, as described in claim 3, wherein The high-voltage disconnector is connected between two adjacent train-level main circuit breakers.

5. The fully automatic driving high-voltage system applicable to flexible formation according to claim 3, characterized in that, The high-voltage disconnector is connected between the train-level main circuit breaker and the unit-level main circuit breaker.

6. The full-automatic driving high-voltage system applicable to flexible formation according to claim 3, wherein The traction unit includes a traction transformer and a traction converter, and the existence of a fault in the traction unit includes a fault in the traction transformer, a fault in the traction converter and faults in other devices in the traction unit.

7. A fully automatic driving high-voltage system applicable to flexible formation according to claim 3, characterized in that, The existence of a fault in the high-voltage bus includes faults caused by grounding of the high-voltage bus, short circuit of the high-voltage bus, overcurrent of the high-voltage bus and other faults that may occur in the high-voltage bus.

8. A fully automatic driving high-voltage system applicable to flexible formation, as described in claim 3, characterized in that when the monitoring module monitors that the train is in a fault state, the control module controls the corresponding train-level main circuit breaker to trip.

9. A fully automatic driving high-voltage system applicable to flexible formation, as described in claim 1, wherein Both the train-level main circuit breaker and the unit-level main circuit breaker are AC main circuit breakers.

10. A fully automatic driving high-voltage system applicable to flexible formation, as described in claim 1, wherein The number of the unit-level main circuit breakers is not the same as the number of the traction units.

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