Train-ground cooperative traction power supply system and train

Abstract

The invention provides a train-ground collaborative traction power supply system and a train, and can be applied to the technical field of rail transit. The system comprises an energy management subsystem used for obtaining state data and position data through a control management system, determining a target power supply device used for providing traction force for a train from a plurality of power supply devices according to the position data and respective tidal current distribution of the plurality of power supply devices, and generating a control instruction according to the state data and the target power supply device; the instruction execution subsystem is used for controlling target power supply equipment to provide traction force for the train according to the control instruction; under the condition that the power supply mode of the target power supply equipment to the train is an alternating current power supply mode, the instruction execution subsystem comprises an energy dispatching unit and an in-phase power supply unit; the energy scheduling unit is used for controlling the target power supply equipment to provide in-phase current according to the control instruction; and the in-phase power supply unit is used for controlling target power supply equipment to provide in-phase current according to the control instruction so as to provide traction force for the train.

Description

Technical Field

[0001] The present disclosure relates to the field of rail transit technology, and more specifically, to a vehicle-ground coordinated traction power supply system and a train. Background Art

[0002] The power supply system of the train obtains electricity from the contact network to provide a continuous source of power for the train. The power supply system of the train can provide the train with electricity for traction, lighting, ventilation, air conditioning, etc., so as to ensure its continuous and stable operation. However, with the rapid development of rail transit technology, the power supply system of the train in the relevant technology can no longer meet the requirements of intelligent rail transit. Therefore, a new power supply system needs to be designed. Summary of the invention

[0003] In view of this, the present disclosure provides a vehicle-ground coordinated traction power supply system and a train.

[0004] One aspect of the present disclosure provides a vehicle-ground coordinated traction power supply system, comprising:

[0005] An energy management subsystem, configured to obtain the status data and position data of the train through a control management system of the train, determine a target power supply device for providing traction to the train from among the plurality of power supply devices according to the position data and the power flow distribution of each of the plurality of power supply devices, and generate a control instruction according to the status data and the target power supply device;

[0006] An instruction execution subsystem, used for controlling the target power supply device to provide traction force to the train according to the control instruction;

[0007] Wherein, when the power supply mode of the target power supply equipment to the train is an AC power supply mode, the instruction execution subsystem includes an energy scheduling unit and a co-phase power supply unit;

[0008] The energy dispatching unit is used to control the target power supply device to provide the same-phase current to provide traction to the train according to the control instruction when the train passes through the phase separation area between two adjacent power supply devices;

[0009] The above-mentioned in-phase power supply unit is used to control the above-mentioned target power supply equipment to provide in-phase current according to the above-mentioned control instruction to provide the above-mentioned traction force to the above-mentioned train when the above-mentioned train passes outside the above-mentioned phase separation area.

[0010] According to an embodiment of the present disclosure, when the power supply mode of the target power supply equipment to the train is an AC power supply mode, the power supply equipment includes a substation;

[0011] The energy management subsystem is used to determine the target substation for providing traction to the train from the multiple substations according to the location data and the power flow distribution of each of the multiple substations, and to generate the control instruction according to the target substation and the status data.

[0012] According to an embodiment of the present disclosure, the above-mentioned same-phase power supply unit includes a plurality of the above-mentioned same-phase power supply units, and each of the above-mentioned substations corresponds to one above-mentioned same-phase power supply unit;

[0013] The plurality of same-phase power supply units are used to determine the target same-phase power supply unit corresponding to the target substation according to the control instruction, and provide the traction force to the train through the target same-phase power supply unit.

[0014] According to an embodiment of the present disclosure, the energy management subsystem is also used to determine the target substation for providing traction to the train from among the plurality of substations based on the location data, the power flow distribution of each of the plurality of substations and the energy recovery data of other trains adjacent to the train.

[0015] According to an embodiment of the present disclosure, when the power supply mode of the target power supply equipment to the train is a DC power supply mode, the power supply equipment includes a traction station;

[0016] Among them, the above-mentioned energy management subsystem is used to determine the target traction station for providing the above-mentioned traction force to the above-mentioned train from the multiple traction stations according to the above-mentioned position data and the flow distribution of each of the multiple traction stations, and generate the above-mentioned control instructions according to the above-mentioned status data and the above-mentioned target traction station.

[0017] According to an embodiment of the present disclosure, the above instruction execution subsystem includes a bidirectional conversion unit;

[0018] The bidirectional converter unit is used to control the target traction station to provide traction force to the train according to the control instruction.

[0019] According to an embodiment of the present disclosure, the bidirectional converter unit includes a plurality of bidirectional converter units, and each traction station corresponds to one bidirectional converter unit;

[0020] The plurality of bidirectional converter units are used to determine the target bidirectional converter unit corresponding to the target traction station according to the first sub-control instruction, so that the target bidirectional converter unit controls the target traction station to provide traction force to the train according to the first sub-control instruction.

[0021] According to an embodiment of the present disclosure, the energy management subsystem is also used to determine the target traction station for providing traction to the train from among the plurality of traction stations based on the position data, the flow distribution of each of the plurality of traction stations and the energy recovery data of other trains adjacent to the train.

[0022] According to an embodiment of the present disclosure, the above-mentioned status data includes train operation mode data, train operation power data, train network voltage data, train grade data and train speed data.

[0023] Another aspect of the present disclosure provides a train connected to the above-mentioned vehicle-ground coordinated traction power supply system.

[0024] According to the embodiments of the present disclosure, the vehicle-ground coordinated traction power supply system determines the target power supply device for providing traction to the train from multiple power supply devices according to the position data and the power flow distribution of each of the multiple power supply devices, generates a control instruction according to the state data and the target power supply device, and the control instruction is a control strategy calculated according to the state data, the position data and the power flow distribution of the power supply device, and issues the control instruction to the power supply device, thereby realizing energy-saving control of the traction power supply system by controlling the output of the ground traction power supply system, improving the comprehensive energy-saving rate, reducing line losses, and optimizing the quality of electric energy. When the power supply mode of the target power supply device to the train is the AC power supply mode, the train is powered by the energy dispatching unit and the same-phase power supply unit. The energy dispatching unit can eliminate the need to cut off the power when the train passes through the phase separation zone between two adjacent power supply devices, eliminate the power-free zone in the phase separation zone, and make the train energized without perceiving the phase separation. The same-phase power supply unit can be used to cancel the output power phase separation of the power supply device itself when the train passes outside the phase separation zone, realize the same-phase power supply of the entire line, and balance the three-phase load. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and other objects, features and advantages of the present disclosure will become more apparent through the following description of the embodiments of the present disclosure with reference to the accompanying drawings, in which:

[0026] Figure 1 A block diagram of a vehicle-ground coordinated traction power supply system in an AC power supply mode according to an embodiment of the present disclosure is schematically shown;

[0027] Figure 2 A schematic diagram schematically shows a vehicle-ground coordinated traction power supply system according to an embodiment of the present disclosure supplying power to a train through a substation in an AC power supply mode;

[0028] Figure 3 A schematic diagram of a vehicle-ground coordinated traction power supply system according to another embodiment of the present disclosure supplying power to a train through a substation and energy recovery data in an AC power supply mode is schematically shown;

[0029] Figure 4 A block diagram of a vehicle-ground coordinated traction power supply system in a DC power supply mode according to an embodiment of the present disclosure is schematically shown;

[0030] Figure 5 A schematic diagram schematically shows a vehicle-ground coordinated traction power supply system according to an embodiment of the present disclosure supplying power to a train through a traction station in a DC power supply mode; and

[0031] Figure 6 A block diagram of a train according to an embodiment of the present disclosure is schematically shown. DETAILED DESCRIPTION

[0032] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present disclosure. In the following detailed description, for ease of explanation, many specific details are set forth to provide a comprehensive understanding of the embodiments of the present disclosure. However, it is apparent that one or more embodiments may also be implemented without these specific details. In addition, in the following description, descriptions of known structures and technologies are omitted to avoid unnecessary confusion of the concepts of the present disclosure.

[0033] The terms used herein are only for describing specific embodiments and are not intended to limit the present disclosure. The terms "comprise", "include", etc. used herein indicate the existence of the features, steps, operations and / or components, but do not exclude the existence or addition of one or more other features, steps, operations or components.

[0034] All terms (including technical and scientific terms) used herein have the meanings commonly understood by those skilled in the art unless otherwise defined. It should be noted that the terms used herein should be interpreted as having a meaning consistent with the context of this specification and should not be interpreted in an idealized or overly rigid manner.

[0035] When using expressions such as "at least one of A, B, and C, etc.", they should generally be interpreted according to the meaning of the expression commonly understood by those skilled in the art (for example, "a system having at least one of A, B, and C" should include but is not limited to a system having A alone, B alone, C alone, A and B, A and C, B and C, and / or A, B, C, etc.).

[0036] In the embodiments of the present disclosure, the collection, updating, analysis, processing, use, transmission, provision, disclosure, storage, etc. of the data involved (for example, including but not limited to user personal information) are in compliance with the provisions of relevant laws and regulations, are used for legitimate purposes, and do not violate public order and good morals. In particular, necessary measures are taken for user personal information to prevent illegal access to user personal information data and maintain the security of user personal information, network security, and national security.

[0037] In the embodiments of the present disclosure, the user's authorization or consent is obtained before obtaining or collecting the user's personal information.

[0038] In the traditional electromechanical system integration mode, the train, running signal, power supply and other systems are designed independently, information is isolated, and control is decentralized. In particular, the coordination efficiency between the ground systems and the vehicle is low, and it is difficult to achieve effective breakthroughs in improving the performance of the large system. The traditional traction power supply system can also recycle part of the regenerative braking energy of the train, but the power supply arm is short and the utilization rate is low, and the other part is fed back to the power grid.

[0039] In terms of DC traction power supply, conventional urban rail traction power supply systems usually adopt a configuration scheme of rectifier units + energy feedback devices. There is no information interaction between the ground power supply ("source") and the vehicle ("load"). The "source" follows the "load", the grid voltage fluctuates greatly, and the cross-regional power supply phenomenon is serious. The power supply quality and energy-saving effect need to be improved. In related technologies, traction power supply is carried out through bidirectional converters or bidirectional converters + rectifiers, and solutions for energy management by obtaining vehicle operation data have also emerged, but the specific implementation method and interface solution for vehicle-ground data collaboration are still unclear.

[0040] In terms of AC traction power supply, the traditional AC traction power supply system adopts a single-phase, segmented power supply structure. Energy flows in different areas. The power supply arms are relatively independent, and the power supply capacity is not fully utilized. In addition, the traction power supply system has problems such as harmonics, negative sequence, reactive power, and grid voltage fluctuations. At the same time, due to the need to set up electrical phase separation intervals in traction depots and sub-divisions, trains need to be equipped with automatic over-phase devices to collect over-phase signals and disconnect the main circuit breaker, which increases the complexity of train design and hinders the improvement of train operating efficiency.

[0041] In view of this, an embodiment of the present disclosure provides a vehicle-ground coordinated traction power supply system, including an energy management subsystem and an instruction execution subsystem; the energy management subsystem is used to obtain the running status data and position data of the train through the control management system of the train, determine the target power supply device for providing traction to the train from multiple power supply devices according to the position data and the power flow distribution of each of the multiple power supply devices, and generate a control instruction according to the status data and the target power supply device. The instruction execution subsystem is used to control the target power supply device to provide traction to the train according to the control instruction. Wherein, in the case where the power supply mode of the target power supply device to the train is the AC power supply mode, the instruction execution subsystem includes an energy scheduling unit and a co-phase power supply unit. The energy scheduling unit is used to control the target power supply device to provide co-phase current to provide traction to the train according to the control instruction when the train passes through the phase separation zone between two adjacent power supply devices. The co-phase power supply unit is used to control the target power supply device to provide co-phase current to provide traction to the train according to the control instruction when the train passes outside the phase separation zone.

[0042] Figure 1 A block diagram of a vehicle-ground cooperative traction power supply system in an AC power supply mode according to an embodiment of the present disclosure is schematically shown.

[0043] like Figure 1 As shown, the vehicle-ground cooperative traction power supply system 100 includes an energy management subsystem 110 and an instruction execution subsystem 120 .

[0044] The energy management subsystem 110 is used to obtain the state data and position data of the train through the control management system of the train, determine the target power supply device for providing traction to the train from the multiple power supply devices according to the position data and the power flow distribution of each of the multiple power supply devices, and generate a control instruction according to the state data and the target power supply device. The instruction execution subsystem 120 is used to control the target power supply device to provide traction to the train according to the control instruction.

[0045] In which, when the power supply mode of the target power supply equipment to the train is the AC power supply mode, the instruction execution subsystem 120 includes an energy scheduling unit 121 and a same-phase power supply unit 122 .

[0046] The energy dispatching unit 121 is used to control the target power supply device to provide the same-phase current to provide traction to the train according to the control instruction when the train passes through the phase separation area between two adjacent power supply devices. The same-phase power supply unit 122 is used to control the target power supply device to provide the same-phase current to provide traction to the train according to the control instruction when the train passes outside the phase separation area.

[0047] According to the embodiments of the present disclosure, during the operation of the train, the status data can be transmitted in real time to the on-board equipment of the signal subsystem in the vehicle-ground integrated electromechanical system through the on-board communication connection of the train, and then transmitted to the ground equipment of the signal subsystem in real time with the help of the vehicle-ground communication channel of the signal subsystem. The signal subsystem will superimpose the position data of the train and send it to the energy management subsystem.

[0048] According to the embodiments of the present disclosure, the vehicle-ground integrated electromechanical system can coordinate the train's signal, power supply, engineering, passenger services, etc. into an integrated electromechanical system, and data can be exchanged between the various parts. Therefore, the signal subsystem can transmit status data and position data to the vehicle-ground coordinated traction power supply system.

[0049] The communication connection of each subsystem in the train part is mainly based on the multifunction vehicle bus (MVB) or on-board Ethernet. Among them, the communication connection of each subsystem in the ground part is mainly based on Ethernet or optical fiber, and the communication connection between the ground and the train is mainly based on LTE or WLAN.

[0050] According to an embodiment of the present disclosure, the vehicle-ground coordinated traction power supply system determines the target power supply device for providing traction to the train from multiple power supply devices according to the position data and the power flow distribution of each of the multiple power supply devices, generates a control instruction according to the state data and the target power supply device, and the control instruction is a control strategy calculated according to the state data, the position data and the power flow distribution of the power supply device, and issues the control instruction to the power supply device, thereby realizing energy-saving control of the traction power supply system by controlling the output of the ground traction power supply system, improving the comprehensive energy-saving rate, reducing line losses and optimizing the power quality. When the power supply mode of the target power supply device to the train is the AC power supply mode, the train is powered by the energy scheduling unit and the same-phase power supply unit. The energy scheduling unit can eliminate the need to cut off the power when the train passes through the phase separation zone between two adjacent power supply devices, eliminate the power-free zone in the phase separation zone, and make the train energized without perceiving the over-phase separation. The same-phase power supply unit can be used to cancel the output power phase separation of the power supply device itself when the train passes outside the phase separation zone, realize the same-phase power supply of the entire line, and balance the three-phase load.

[0051] According to an embodiment of the present disclosure, when the power supply mode of the target power supply equipment to the train is an AC power supply mode, the power supply equipment includes a substation; an energy management subsystem, which is used to determine the target substation for providing traction to the train from multiple substations based on location data and the power flow distribution of each of the multiple substations, and generate control instructions based on the target substation and status data.

[0052] According to an embodiment of the present disclosure, the same-phase power supply units include multiple ones, and each substation corresponds to one same-phase power supply unit; the multiple same-phase power supply units are used to determine the target same-phase power supply unit corresponding to the target substation according to the control instructions, and provide traction to the train through the target same-phase power supply unit.

[0053] According to an embodiment of the present disclosure, the power flow distribution of the substation may be the voltage and current information of the AC switch cabinet. For example, it may be the traction transformer 110kV bus voltage, the traction transformer 110kV bus current, the traction transformer 27.5kV bus voltage, the traction transformer 27.5kV bus current, the traction transformer 110kV bus voltage, the traction transformer 110kV bus current, the traction transformer 27.5kV bus voltage, the traction transformer 27.5kV bus current, the traction transformer 27.5kV bus voltage, the traction transformer 27.5kV bus current, the same-phase power supply unit active power, the same-phase power supply unit reactive power, the energy dispatch unit active power, the energy dispatch unit reactive power, and the energy dispatch unit active dispatch.

[0054] Figure 2 A schematic diagram is shown schematically showing a vehicle-ground coordinated traction power supply system according to an embodiment of the present disclosure supplying power to a train through a substation in an AC power supply mode.

[0055] like Figure 2 As shown, the relationship between substation 1, substation 2, substation and energy management subsystem is shown. Substation 1 and substation 2 are both equipped with co-phase power supply units (CPS), and substations are equipped with energy dispatch units (EDE). Data is transmitted between the energy management subsystem and CPS and EDE through a high-speed communication network. The transmitted data includes information such as voltage, current, power of each substation and voltage, current, power, speed, etc. of the train. CPS can cancel the phase separation of the outlet electricity of the substation, realize the same-phase power supply of the entire line, balance the three-phase load, and reduce the negative sequence; EDE can flexibly connect the ends of two adjacent power supply arms and realize bilateral controllable power supply, improve the utilization rate of regenerative braking energy, eliminate the power-free area of ​​the substation, and make the train unaware of excessive phase separation. When the train is closest to substation 1, the distance between substation 1 and the train can be calculated based on the train's position data, and then the amount of electric energy required for the train's traction can be determined based on the train's status data. According to the power flow distribution of substations 1 and 2, it can be determined whether substation 1 is sufficient to provide the electric energy required by the train. If it can, substation 1 will be used as the target substation to provide electric energy to the train. If not, substation 1 and substation 2 can be used together as the target substation to provide electric energy to the train. It can be understood that the figure only shows two substations and one substation, and the number of substations and substations can also be other numbers. When the train is closest to substation 2, the process of passing through substation 1 can be referred to, and it will not be repeated here. Due to the settings of CPS and EDE, the same-phase power supply can be achieved throughout the entire line of the train.

[0056] According to an embodiment of the present disclosure, the energy management subsystem is also used to determine a target substation for providing traction to the train from among multiple substations based on location data, flow distribution of each of the multiple substations, and energy recovery data of other trains adjacent to the train.

[0057] Figure 3 A schematic diagram is shown schematically showing a vehicle-ground coordinated traction power supply system according to another embodiment of the present disclosure supplying power to a train through a substation and energy recovery data in an AC power supply mode.

[0058] like Figure 3 As shown, both substation 1 and substation 2 are equipped with CPS to cancel the phase separation of the outlet electricity in the substation, and the substation is equipped with EDE so that there is no power-free area in the phase separation area. Figure 3 The middle dotted arrow 1 indicates that the braked train 1 can transmit the regenerative energy generated by braking back to the contact network. The energy management subsystem transmits the regenerative energy to the traction train 2 through the phase separation area based on the energy recovery data generated by the regenerative energy, combined with the position data of the traction train 2 and the power flow distribution of multiple substations. At the same time, as indicated by the dotted arrow 2, the energy management subsystem can also calculate and use substation 2 as the target substation to provide power to the traction train 2. According to the vehicle-ground coordinated traction power supply system of the embodiment of the present disclosure, in the AC power supply mode, it can not only penetrate the traction network power supply arm to optimize the power flow distribution of the traction network, but also improve the utilization rate of regenerative braking energy, reduce the peak load of the substation, and provide power supply support capabilities for neighboring substations.

[0059] Figure 4 A block diagram of a vehicle-ground cooperative traction power supply system in a DC power supply mode according to an embodiment of the present disclosure is schematically shown.

[0060] According to an embodiment of the present disclosure, when the power supply mode of the target power supply equipment to the train is a DC power supply mode, the power supply equipment includes a traction depot, and the vehicle-ground collaborative traction power supply system 400 includes an energy management subsystem 410 and an instruction execution subsystem 420.

[0061] The energy management subsystem 410 is used to determine a target traction station for providing traction force to the train from among the multiple traction stations according to the position data and the flow distribution of each of the multiple traction stations, and to generate a control instruction according to the state data and the target traction station. The instruction execution subsystem 420 includes a bidirectional current conversion unit 421; the bidirectional current conversion unit 421 is used to control the target traction station to provide traction force to the train according to the control instruction.

[0062] According to the embodiments of the present disclosure, the original rectifier unit energy feeding device is replaced with a bidirectional converter unit, an energy storage device is selected, and an energy management subsystem is configured to open up the information flow and energy flow between the train and the ground, and switch to active power supply, which increases the overall energy saving rate by about 5%. According to the location information of the train, the power supply of the target traction station is realized nearby, and the line loss is reduced by about 20%.

[0063] According to an embodiment of the present disclosure, the power flow distribution of the traction station may be the voltage and current information of the DC switch cabinet. For example, it may include the bus voltage of the DC switch cabinet, the bus current of the DC switch cabinet, the three-phase bus voltage of the AC switch cabinet, the three-phase bus current of the AC switch cabinet, the AC and DC side voltage and current of the bidirectional converter, the bus voltage of the DC switch cabinet, the bus current of the DC switch cabinet, the three-phase bus voltage of the AC switch cabinet, and the three-phase bus current of the AC switch cabinet.

[0064] Figure 5 A schematic diagram is shown schematically showing a vehicle-ground coordinated traction power supply system according to an embodiment of the present disclosure supplying power to a train through a traction pole in a DC power supply mode.

[0065] like Figure 5 As shown in the figure, taking the conversion of 110kV AC power into 35kV ring network as an example, three traction stations and trains are shown in the figure. In each traction station, the combination of the rectifier unit and the energy feedback device used in the related art is replaced by a bidirectional converter unit, and an energy storage unit is configured. Figure 5 When the power supply network shown is running, the distance between traction station 2 and the train can be calculated based on the position data of the train, and then the amount of electric energy required for the traction force required by the train can be determined based on the status data of the train. According to the flow distribution of traction stations 1, 2 and 3, it can be determined whether traction station 2 is sufficient to provide the electric energy required by the train. If it is, traction station 2 will be used as the target traction station to provide electric energy to the train. If not, traction station 1 and traction station 2 can be used as the target traction station to provide electric energy to the train, or traction station 2 and traction station 3 can be used as the target traction station to provide electric energy to the train. After determining the target traction station, the bidirectional conversion unit can determine the bidirectional conversion unit corresponding to the target traction station as the target bidirectional conversion unit according to the first sub-control instruction, so as to control the target traction station to provide traction force to the train through the target bidirectional conversion unit according to the first sub-control instruction. The energy storage unit can store the surplus electric energy in the power supply network to save electric energy consumption. The traction station can also include other in-station equipment. Each traction station can also be equipped with a power supply control and monitoring automation system (PSCADA) to monitor the current situation of the traction station. The monitoring results can be fed back to the energy management subsystem.

[0066] The DC grid voltage fluctuation range of the traction power supply system in the related technology is DC1450~1800V, while the vehicle-ground coordinated traction power supply system of the embodiment of the present invention controls the DC grid voltage by controlling the output of the bidirectional converter unit of the traction station. The DC grid voltage fluctuation range can be controlled within DC1650~1750V, which increases the DC grid voltage while reducing the grid voltage fluctuation.

[0067] According to an embodiment of the present disclosure, the energy management subsystem is also used to determine a target traction depot for providing traction to the train from among multiple traction depots based on location data, power flow distribution of each of the multiple traction depots, and energy recovery data of other trains adjacent to the train.

[0068] According to an embodiment of the present disclosure, the energy recovery data of other trains may be generated when other trains are braking. Based on the position data, the flow distribution of multiple traction depots and the energy recovery data of other trains adjacent to the train, the braking energy of other trains may be recycled to save energy.

[0069] In the DC power supply mode, the flow of electric energy can be divided into three levels of power supply: AC power supply grid, DC power supply grid and train.

[0070] The energy management subsystem can control the output of the bidirectional converter unit according to the monitored vehicle operating conditions (traction / braking / no-load) in the operating range, so as to achieve the purpose of power supply nearby and increase the absorption of adjacent vehicles, thereby reducing the energy returned to the 110kV power grid. According to the test and verification, when the train departure density is high (for example, 2 minutes or less), the feedback energy can be completely absorbed by the adjacent vehicles and consumed by the load in the station, and there is no need for scheduling and almost no return to the 110kV side power grid; when the train departure density is low (for example, more than 5 minutes), the energy management subsystem dynamically adjusts the starting voltage of the bidirectional converter unit connected to different main transformers to achieve the dispatch of braking energy between different sections of 35kV busbars, thereby avoiding the return of energy to the 110kV power grid.

[0071] According to an embodiment of the present disclosure, the status data includes train operation mode data, train operation power data, train network voltage data, train level data and train speed data. Among them, the operation mode can be traction, braking, and coasting of the train, the train level data can be the traction and braking level of the train, the train network voltage data can be the voltage and current information at the connection between the train and the traction network (i.e., the network voltage and network current detected by the train), and the status data can also include the traction / regenerative braking power of the train.

[0072] Figure 6 A block diagram of a train according to an embodiment of the present disclosure is schematically shown.

[0073] like Figure 6As shown, the train 610 is connected to the train-ground coordinated traction power supply system 620 .

[0074] The flowcharts and block diagrams in the accompanying drawings illustrate the possible implementation architecture, functions and operations of the systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each box in the flowchart or block diagram may represent a module, a program segment, or a part of a code, and the above-mentioned module, program segment, or a part of the code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box may also occur in an order different from that marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram or flowchart, and the combination of boxes in the block diagram or flowchart, can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions. It can be understood by those skilled in the art that the features recorded in the various embodiments of the present disclosure can be combined and / or combined in a variety of ways, even if such a combination or combination is not explicitly recorded in the present disclosure. In particular, without departing from the spirit and teaching of the present disclosure, the features described in the various embodiments of the present disclosure may be combined and / or combined in a variety of ways. All of these combinations and / or combinations fall within the scope of the present disclosure.

[0075] The embodiments of the present disclosure are described above. However, these embodiments are only for illustrative purposes and are not intended to limit the scope of the present disclosure. Although the embodiments are described above, this does not mean that the measures in the various embodiments cannot be used in combination to advantage. Without departing from the scope of the present disclosure, those skilled in the art may make a variety of substitutions and modifications, which should all fall within the scope of the present disclosure.

Claims

1. A vehicle-ground coordinated traction power supply system, comprising: an energy management subsystem, configured to obtain the running status data and position data of the train through the control management system of the train, determine a target power supply device for providing traction to the train from among the multiple power supply devices according to the position data and the power flow distribution of each of the multiple power supply devices, and generate a control instruction according to the status data and the target power supply device; An instruction execution subsystem, used for controlling the target power supply device to provide traction to the train according to the control instruction; Wherein, when the power supply mode of the target power supply device to the train is an AC power supply mode, the instruction execution subsystem includes an energy scheduling unit and a co-phase power supply unit; The energy scheduling unit is used to control the target power supply device to provide the same-phase current to provide traction to the train according to the control instruction when the train passes through the phase separation area between two adjacent power supply devices; The in-phase power supply unit is used to control the target power supply device to provide in-phase current according to the control instruction to provide the traction force to the train when the train passes outside the phase separation area.

2. The system according to claim 1, wherein: In the case where the power supply mode of the target power supply equipment to the train is an AC power supply mode, the power supply equipment includes a substation; The energy management subsystem is used to determine the target substation for providing traction to the train from the multiple substations according to the location data and the power flow distribution of each of the multiple substations, and generate the control instruction according to the target substation and the status data.

3. The system according to claim 2, wherein: The same-phase power supply unit includes a plurality of same-phase power supply units, and each substation corresponds to one same-phase power supply unit; The multiple same-phase power supply units are used to determine the target same-phase power supply unit corresponding to the target substation according to the control instruction, and provide the traction force to the train through the target same-phase power supply unit.

4. The system according to claim 2 or 3, wherein: The energy management subsystem is also used to determine the target substation for providing traction to the train from among the multiple substations based on the location data, the power flow distribution of each of the multiple substations and the energy recovery data of other trains adjacent to the train.

5. The system according to claim 1, wherein: In the case where the power supply mode of the target power supply equipment to the train is a DC power supply mode, the power supply equipment includes a traction station; Among them, the energy management subsystem is used to determine the target traction station for providing the traction force to the train from the multiple traction stations according to the position data and the power flow distribution of each of the multiple traction stations, and generate the control instruction according to the status data and the target traction station.

6. The system according to claim 5, wherein: The instruction execution subsystem includes a bidirectional conversion unit; The bidirectional conversion unit is used to control the target traction to provide traction force to the train according to the control instruction.

7. The system according to claim 5, wherein: The bidirectional current conversion unit comprises a plurality of bidirectional current conversion units, and each traction station corresponds to one bidirectional current conversion unit; The plurality of bidirectional converter units are used to determine a target bidirectional converter unit corresponding to the target traction station according to the first sub-control instruction, so that the target bidirectional converter unit controls the target traction station to provide traction force to the train according to the first sub-control instruction.

8. The system according to claim 5 or 6, wherein: The energy management subsystem is also used to determine the target traction station for providing traction to the train from among the multiple traction stations based on the position data, the flow distribution of each of the multiple traction stations, and the energy recovery data of other trains adjacent to the train.

9. The system according to claim 1 or 2, wherein: The status data includes train operation mode data, train operation power data, train network voltage data, train grade data and train speed data.

10. A train connected to the train-ground coordinated traction power supply system according to any one of claims 1 to 9.

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