Train alternating current load control method and device and train

Abstract

The invention provides a train alternating current load control method and device and a train, and can be applied to the technical field of train load control. The method comprises the steps that under the condition that it is determined that a first auxiliary converter which breaks down exists in multiple auxiliary converters in a train, the real-time output power of a second auxiliary converter which works normally is obtained, and the auxiliary converters are used for providing alternating current for load equipment of the train; according to the real-time output power of the second auxiliary converter and the load power of the load equipment, the load shedding control grade of the train is determined; determining a load shedding strategy matched with the train according to the load shedding control grade of the train; and according to the load shedding strategy matched with the train, controlling the load equipment to carry out load shedding.

Description

Technical Field

[0001] The present disclosure relates to the technical field of train load control, and more particularly, to a method and device for controlling an alternating current load of a train and a train. Background Art

[0002] The auxiliary converter of a train is usually used to convert the electric energy from the power grid into the electric energy required by the load devices of the auxiliary power supply system inside the train. These load devices usually include lighting, ventilation, braking, air conditioning, battery charging, and so on. The auxiliary converter ensures the operation of each load device in a stable and reliable environment by precisely controlling the output voltage and current, thereby guaranteeing the overall performance and safety of the train.

[0003] In the process of implementing the concept of the present disclosure, the inventors found that there are at least the following problems in the related art: the intelligent level of load reduction control for trains in the related art is relatively low when the auxiliary converter fails, which affects the comfort of the train. Summary of the Invention

[0004] In view of this, the present disclosure provides a method and device for controlling an alternating current load of a train and a train.

[0005] One aspect of the present disclosure provides a method for controlling an alternating current load of a train, including:

[0006] When it is determined that there is a first auxiliary converter that fails among multiple auxiliary converters in the train, obtaining the real-time output power of a second auxiliary converter that is working normally, where the auxiliary converter is used to provide alternating current to the load devices of the train;

[0007] Determining the load reduction control level of the train according to the real-time output power of the second auxiliary converter and the load power of the load devices;

[0008] Determining a load reduction strategy matching the train according to the load reduction control level of the train;

[0009] Controlling the load devices to reduce the load according to the load reduction strategy matching the train.

[0010] According to an embodiment of the present disclosure, the determining the load reduction control level of the train according to the real-time output power of the second auxiliary converter and the load power of the load devices includes:

[0011] Determining the load overload power of the load devices according to the load power of the load devices;

[0012] Determining the real-time output power of the train according to the real-time output power of the second auxiliary converter;

[0013] When it is determined that the real-time output power of the train is greater than the load overload power of the load device, determine that the load reduction control level of the train is the normal control level;

[0014] When it is determined that the real-time output power of the train is less than or equal to the load overload power of the load device, determine that the load reduction control level of the train is the abnormal control level.

[0015] According to an embodiment of the present disclosure, when it is determined that the real-time output power of the train is less than or equal to the load overload power of the load device, determining that the load reduction control level of the train is the abnormal control level includes:

[0016] When it is determined that the real-time output power of the train is less than or equal to the load overload power of the load device and greater than the first preset load power of the load device, determine that the load reduction control level is the first abnormal control sub-level;

[0017] When it is determined that the real-time output power of the train is less than or equal to the first preset load power of the load device and greater than the second preset load power of the load device, determine that the load reduction control level is the second abnormal control sub-level;

[0018] When it is determined that the real-time output power of the train is less than or equal to the second preset load power of the load device and greater than the third preset load power of the load device, determine that the load reduction control level is the third abnormal control sub-level;

[0019] When it is determined that the real-time output power of the train is less than or equal to the third preset load power of the load device, determine that the load reduction control level is the fourth abnormal control sub-level.

[0020] According to an embodiment of the present disclosure, determining a load reduction strategy matching the train according to the load reduction control level of the train includes:

[0021] When it is determined that the load reduction control level is the normal control level, determine that the load reduction strategy of the load device is not to reduce the load;

[0022] When it is determined that the load reduction control level is the abnormal control level, determine that the load reduction strategy of the load device is to reduce the load.

[0023] According to an embodiment of the present disclosure, when it is determined that the load reduction control level is the abnormal control level, determining that the load reduction strategy of the load device is to reduce the load includes:

[0024] When it is determined that the above abnormal control level is the above first abnormal control sub-level, determine that the load shedding strategy for the above load device is the first load shedding sub-strategy;

[0025] When it is determined that the above abnormal control level is the above second abnormal control sub-level, determine that the load shedding strategy for the above load device is the second load shedding sub-strategy;

[0026] When it is determined that the above abnormal control level is the above third abnormal control sub-level, determine that the load shedding strategy for the above load device is the third load shedding sub-strategy;

[0027] When it is determined that the above abnormal control level is the above first abnormal control sub-level, determine that the load shedding strategy for the above load device is the fourth load shedding sub-strategy.

[0028] According to an embodiment of the present disclosure, the above first load shedding sub-strategy is that a first preset number of load devices perform no load shedding operation and a second preset number of load devices perform load shedding operation;

[0029] The above second load shedding sub-strategy is that all the above load devices perform load shedding operation;

[0030] The above third load shedding sub-strategy is that a third preset number of the above load devices perform load shedding operation and a fourth preset number of load devices perform shutdown operation;

[0031] The above fourth load shedding sub-strategy is that all the above load devices perform shutdown operation.

[0032] According to an embodiment of the present disclosure, in the above first load shedding sub-strategy, the above first preset number of load devices and the above second preset number of load devices alternately perform no load shedding operation and load shedding operation;

[0033] In the above third load shedding sub-strategy, the above third preset number of the above load devices and the above fourth preset number of load devices alternately perform load shedding operation and shutdown operation.

[0034] According to an embodiment of the present disclosure, the above method further includes:

[0035] When it is determined that multiple above auxiliary converters in the above train are all the above second auxiliary converters, determine that the load shedding strategy for the above load device is no load shedding.

[0036] Another aspect of the present disclosure provides a train AC load control device, including:

[0037] An acquisition module, configured to acquire the real-time output power of a second auxiliary converter that is operating normally when it is determined that there is a first auxiliary converter with a fault among multiple auxiliary converters in a train, where the auxiliary converter is configured to provide alternating current to load devices of the train;

[0038] A first determination module, configured to determine a load reduction control level of the train according to the real-time output power of the second auxiliary converter and the load power of the load device;

[0039] A second determination module, configured to determine a load reduction strategy matching the train according to the load reduction control level of the train;

[0040] A control module, configured to control the load device to perform load reduction according to the load reduction strategy matching the train.

[0041] Another aspect of the present disclosure provides a train, including:

[0042] The train AC load control device as described above.

[0043] Another aspect of the present disclosure provides an electronic device, including:

[0044] One or more processors;

[0045] A memory, configured to store one or more programs,

[0046] wherein, when the one or more programs are executed by the one or more processors, the one or more processors are caused to implement the method as described above.

[0047] Another aspect of the present disclosure provides a computer-readable storage medium, storing computer-executable instructions, which are used to implement the method as described above when executed.

[0048] Another aspect of the present disclosure provides a computer program product, the computer program product includes computer-executable instructions, and the instructions are used to implement the method as described above when executed.

[0049] According to an embodiment of the present disclosure, when an auxiliary converter fails, according to the output power of the auxiliary converter and the load power of the load device, the load reduction control level of the train can be dynamically determined, and a corresponding load reduction strategy is matched according to the load reduction control level to perform load reduction on the load device, and the working condition of the auxiliary converter is monitored in real time, which can minimize the impact caused by the failure of the auxiliary converter and avoid directly performing load reduction on the load device, resulting in the comfort of the train, and can improve the intelligence of the train load reduction control. Description of the Drawings

[0050] Through the following description of the embodiments of the present disclosure with reference to the accompanying drawings, the above and other objects, features, and advantages of the present disclosure will become clearer. In the drawings:

[0051] Figure 1 Schematically shows an application scenario of a train AC load control method, device, and train according to an embodiment of the present disclosure;

[0052] Figure 2 Schematically shows a flowchart of a train AC load control method according to an embodiment of the present disclosure;

[0053] Figure 3 Schematically shows a system connection diagram of a train according to an embodiment of the present disclosure;

[0054] Figure 4 Schematically shows a flowchart of a train AC load control method according to another embodiment of the present disclosure;

[0055] Figure 5 Schematically shows a block diagram of a train AC load control device according to an embodiment of the present disclosure;

[0056] Figure 6 Schematically shows a block diagram of a train according to an embodiment of the present disclosure; and

[0057] Figure 7 Schematically shows a block diagram of an electronic device suitable for implementing the method described above according to an embodiment of the present disclosure. Detailed implementation manners

[0058] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. However, it should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present disclosure. In the following detailed description, for the sake of explanation, many specific details are set forth to provide a comprehensive understanding of the embodiments of the present disclosure. However, obviously, one or more embodiments can also be implemented without these specific details. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present disclosure.

[0059] The terms used herein are merely for describing specific embodiments and are not intended to limit the present disclosure. The terms "including", "comprising", etc. used herein indicate the presence of the described features, steps, operations, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, or components.

[0060] All terms used herein (including technical and scientific terms) have the meanings commonly understood by those of ordinary skill 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.

[0061] In cases where expressions similar to "at least one of A, B, and C, etc." are used, generally, it should be interpreted according to the meaning that those of ordinary skill in the art usually understand such expressions (for example, "a system having at least one of A, B, and C" should include, but not be limited to, a system having only A, only B, only C, having A and B, having A and C, having B and C, and / or having A, B, and C, etc.).

[0062] In the embodiments of the present disclosure, in terms of the collection, update, analysis, processing, use, transmission, provision, disclosure, storage, etc. of the involved data (for example, including but not limited to user personal information), they all comply with the provisions of relevant laws and regulations, are used for legal purposes, and do not violate public order and good customs. In particular, necessary measures are taken for user personal information to prevent illegal access to user personal information data and to safeguard the security of user personal information, network security, and national security.

[0063] In the embodiments of the present disclosure, before obtaining or collecting user personal information, the authorization or consent of the user has been obtained.

[0064] In the related art, the output power of the auxiliary converter is designed according to the total power consumption of the train's AC loads, and at the same time, it is necessary to meet the load working requirements under fault conditions. For example, during the design of the auxiliary power supply system of a certain EMU, 4 auxiliary converters are set according to the requirements, and it is ensured that "when one auxiliary converter fails, the auxiliary power supply system can be continuously powered by the remaining auxiliary converters; when two auxiliary converters fail, it should at least meet the ability to operate at half load for the entire train's air-conditioning system." Under normal conditions, the maximum total AC load of the EMU is 646 kVA, and the capacity requirement for a single auxiliary converter is 161.5 kVA; when two auxiliary converters fail, the total AC load of the EMU is 480 kVA, and the capacity requirement for a single auxiliary converter (with the remaining 2 working) is 240 kVA. Therefore, the capacity design of the auxiliary converter is not less than 240 kVA.

[0065] Since the total power of the full - train load takes into account the normal operation of all loads under extreme conditions, through research, during the actual train operation, under normal conditions, the load rate of each auxiliary converter is between 30% and 40%, and the air - conditioning load accounts for about 70% of the whole - train load. Therefore, the auxiliary power supply system solution has a high degree of redundancy, and the design of the auxiliary converter has sufficient margin. When a certain auxiliary converter fails, the design of the whole - train load - shedding strategy needs to consider minimizing the impact on passenger services while ensuring the maximum usability of the auxiliary converter.

[0066] When all auxiliary converters are working normally, the full - train load is evenly distributed; when one or more auxiliary converters fail, the auxiliary power supply system can be continuously powered by the remaining auxiliary converters or operate in a degraded load - shedding mode. When the failure of the auxiliary converter causes the air - conditioning system to operate with reduced load (such as half - cold / half - hot / ventilation), it will seriously affect the riding comfort of passengers.

[0067] In view of this, the embodiments of the present disclosure provide a train AC load control method, including: when it is determined that there is a first auxiliary converter that fails among multiple auxiliary converters in the train, obtaining the real - time output power of a second auxiliary converter that is working normally, where the auxiliary converter is used to provide alternating current to the load devices of the train; determining the load - shedding control level of the train according to the real - time output power of the second auxiliary converter and the load power of the load devices; determining a load - shedding strategy matching the train according to the load - shedding control level of the train; and controlling the load devices to shed load according to the load - shedding strategy matching the train.

[0068] Figure 1 Schematically shows the application scenarios of the train AC load control method, device and train according to the embodiments of the present disclosure.

[0069] As Figure 1 shown, the application scenario 100 according to this embodiment may include a first train 110 and a second train 120. The first train 110 and the second train 120 may include a train AC load control device, and the train AC load control device may perform the following operations: when it is determined that there is a first auxiliary converter that fails among multiple auxiliary converters in the train, obtaining the real - time output power of a second auxiliary converter that is working normally, where the auxiliary converter is used to provide alternating current to the load devices of the train; determining the load - shedding control level of the train according to the real - time output power of the second auxiliary converter and the load power of the load devices; determining a load - shedding strategy matching the train according to the load - shedding control level of the train; and controlling the load devices to shed load according to the load - shedding strategy matching the train.

[0070] Figure 2 Schematically shows the flowchart of the train AC load control method according to the embodiments of the present disclosure.

[0071] As shown Figure 2 below, the method includes operations S210 to S240.

[0072] In operation S210, when it is determined that there is a first auxiliary converter with a fault among multiple auxiliary converters in the train, the real-time output power of a second auxiliary converter operating normally is obtained, where the auxiliary converter is used to provide alternating current to the load devices of the train.

[0073] In operation S220, according to the real-time output power of the second auxiliary converter and the load power of the load devices, the load reduction control level of the train is determined.

[0074] In operation S230, according to the load reduction control level of the train, a load reduction strategy matching the train is determined.

[0075] In operation S240, according to the load reduction strategy matching the train, the load devices are controlled to reduce the load.

[0076] According to an embodiment of the present disclosure, to determine whether there is a first auxiliary converter with a fault in the auxiliary converter, the control unit of the train can send a detection signal to the auxiliary converter, and determine whether the auxiliary converter has a fault according to the signal returned by the auxiliary converter. A self-detection program can also be set in the auxiliary converter to make the auxiliary converter perform self-detection regularly. When the result of the regular self-detection indicates that the auxiliary converter is faulty, the detection result is sent to the control unit of the train. The faulty auxiliary converter is the first auxiliary converter.

[0077] According to an embodiment of the present disclosure, the auxiliary converter operating normally is the second auxiliary converter. A power acquisition signal can be sent to the second auxiliary converter to obtain the real-time output power of the second auxiliary converter.

[0078] According to an embodiment of the present disclosure, the load devices of the train can include air conditioners, lighting, kitchen appliances, door control, and so on.

[0079] According to an embodiment of the present disclosure, the load power of the load devices can be the maximum power of the load devices of the train under normal operation.

[0080] According to an embodiment of the present disclosure, based on the power range where the real-time output power of the second auxiliary converter is located and the power range where the load power of the load devices is located, the load reduction control level of the train can be determined, and different load reduction control levels of the train can correspond to different load reduction strategies.

[0081] According to an embodiment of the present disclosure, different degrees of load reduction can be performed on the load devices according to different load reduction strategies.

[0082] According to an embodiment of the present disclosure, in the case of a failure of the auxiliary converter, the load reduction control level of the train can be dynamically determined according to the output power of the auxiliary converter and the load power of the load device, and a corresponding load reduction strategy can be matched according to the load reduction control level to reduce the load on the load device. Moreover, the working condition of the auxiliary converter can be monitored in real time, which can minimize the impact caused by the failure of the auxiliary converter and avoid directly reducing the load on the load device, resulting in discomfort for the train. Additionally, the intelligence of the train load reduction control can be improved.

[0083] According to an embodiment of the present disclosure, determining the load reduction control level of the train according to the real-time output power of the second auxiliary converter and the load power of the load device includes: determining the load overload power of the load device according to the load power of the load device; determining the real-time output power of the train according to the real-time output power of the second auxiliary converter; in the case where it is determined that the real-time output power of the train is greater than the load overload power of the load device, determining the load reduction control level of the train as the normal control level; and in the case where it is determined that the real-time output power of the train is less than or equal to the load overload power of the load device, determining the load reduction control level of the train as the abnormal control level.

[0084] According to an embodiment of the present disclosure, the load overload power of the load device under the extreme working condition can be obtained. According to the real-time output power of the second auxiliary converter, the real-time output power of the train can be determined. The real-time output power of the train mentioned in the present disclosure refers to the output power for the load device and does not include the output power of traction.

[0085] According to an embodiment of the present disclosure, in the case where it is determined that the real-time output power of the train is greater than the load overload power of the load device, that is, the real-time output power of the train can meet the operation of the load device under extreme conditions, the load reduction control level of the train can be determined as the normal control level; in the case where it is determined that the real-time output power of the train is less than or equal to the load overload power of the load device, that is, the real-time output power of the train cannot meet the operation of the load device under extreme conditions, the load reduction control level of the train can be determined as the abnormal control level.

[0086] According to an embodiment of the present disclosure, by obtaining the load overload power of the load device, the power usage of the train's load device under extreme working conditions can be fully considered, thereby improving the comfort of the train.

[0087] According to an embodiment of the present disclosure, when it is determined that the real-time output power of the train is less than or equal to the overload power of the load device, determining that the load reduction control level of the train is an abnormal control level includes: when it is determined that the real-time output power of the train is less than or equal to the overload power of the load device and greater than the first preset load power of the load device, determining that the load reduction control level is the first abnormal control sub-level; when it is determined that the real-time output power of the train is less than or equal to the first preset load power of the load device and greater than the second preset load power of the load device, determining that the load reduction control level is the second abnormal control sub-level; when it is determined that the real-time output power of the train is less than or equal to the second preset load power of the load device and greater than the third preset load power of the load device, determining that the load reduction control level is the third abnormal control sub-level; when it is determined that the real-time output power of the train is less than or equal to the third preset load power of the load device, determining that the load reduction control level is the fourth abnormal control sub-level.

[0088] According to an embodiment of the present disclosure, several intervals can be set according to the overload power of the load device, and the specific abnormal control sub-level can be determined according to the interval where the real-time output power of the train is located.

[0089] According to an embodiment of the present disclosure, the first preset load power of the load device can be 0.75 times the load power, the second preset load power can be 0.5 times the load power, and the third preset load power can be 0.25 times the load power.

[0090] According to an embodiment of the present disclosure, according to the interval where the real-time output power of the train is located, it can be known that the real-time output power of the train corresponding to the first abnormal control sub-level, the second abnormal control sub-level, the third abnormal control sub-level, and the fourth abnormal control sub-level is getting lower and lower. Therefore, the degree of load reduction for the load device is getting higher and higher.

[0091] According to an embodiment of the present disclosure, determining a load reduction strategy matching the train according to the load reduction control level of the train includes: when it is determined that the load reduction control level is the normal control level, determining that the load reduction strategy of the load device is not to reduce the load; when it is determined that the load reduction control level is the abnormal control level, determining that the load reduction strategy of the load device is to reduce the load.

[0092] According to embodiments of the present disclosure, different abnormal control sub-levels may correspond to different load shedding sub-strategies. Therefore, when determining that the load shedding control level is the abnormal control level, determining the load shedding strategy for the load device to be load shedding may include: when determining that the abnormal control level is the first abnormal control sub-level, determining the load shedding strategy for the load device to be the first load shedding sub-strategy; when determining that the abnormal control level is the second abnormal control sub-level, determining the load shedding strategy for the load device to be the second load shedding sub-strategy; when determining that the abnormal control level is the third abnormal control sub-level, determining the load shedding strategy for the load device to be the third load shedding sub-strategy; when determining that the abnormal control level is the first abnormal control sub-level, determining the load shedding strategy for the load device to be the fourth load shedding sub-strategy.

[0093] According to embodiments of the present disclosure, since the real-time output power of the train corresponding to the first abnormal control sub-level, the second abnormal control sub-level, the third abnormal control sub-level, and the fourth abnormal control sub-level is getting lower and lower, the degree of load shedding for the load device corresponding to the first load shedding sub-strategy, the second load shedding sub-strategy, the third load shedding sub-strategy, and the fourth load shedding sub-strategy is getting higher and higher.

[0094] According to embodiments of the present disclosure, through the range where the real-time output power of the train is located, the load shedding control for the load device can be divided into different levels, and different levels correspond to different load shedding sub-strategies, so that the load shedding control of the train can be further made more refined.

[0095] According to embodiments of the present disclosure, the first load shedding sub-strategy may be that a first preset number of load devices perform no load shedding operation and a second preset number of load devices perform load shedding operation. Wherein, the first preset number may be the same as the second preset number, and the load shedding operation performed by the second preset number of load devices may be to reduce the power of the load device to 50%. In the first load shedding sub-strategy, the first preset number of load devices and the second preset number of load devices alternately perform no load shedding operation and load shedding operation; for example, there are a total of A1, A2, A3, and A4 load devices. In the first hour, A1 and A2 perform no load shedding operation, and A3 and A4 perform a 0.5 load shedding operation. In the second hour, A1 and A2 perform a 0.5 load shedding operation, and A3 and A4 perform no load shedding operation. Thus, this can ensure balanced load shedding of the load device. For example, when the load device is an air conditioner, alternating load shedding can ensure that the temperature change in the train carriage is small and improve the comfort of the train.

[0096] According to embodiments of the present disclosure, the second load shedding sub-strategy is that all load devices perform load shedding operation, and it may be that all load devices reduce the power to 0.5 times the load power.

[0097] According to an embodiment of the present disclosure, the third load shedding sub-strategy is to perform load shedding operations on a third preset number of load devices and shutdown operations on a fourth preset number of load devices. The third preset number can be 0.25 times the number of load devices, and the fourth preset number can be 0.75 times the number of load devices. The load shedding operation performed on the third preset number of load devices can be to reduce the power of the load device to 0.5 times the load power. In the third load shedding sub-strategy, the third preset number of load devices and the fourth preset number of load devices alternately perform load shedding operations and shutdown operations.

[0098] According to an embodiment of the present disclosure, the fourth load shedding sub-strategy is to perform shutdown operations on all load devices.

[0099] According to an embodiment of the present disclosure, in the case where it is determined that multiple auxiliary converters in the train are all second auxiliary converters, that is, multiple auxiliary converters are all operating normally, it can be determined that the load shedding strategy for the load devices is no load shedding.

[0100] According to an embodiment of the present disclosure, by real-time monitoring the working conditions of the train load devices and obtaining the real-time output power of each auxiliary converter, the AC load shedding coefficient of the vehicle is dynamically adjusted, thereby minimizing the impact brought by the auxiliary converter failure, maximizing the utilization of the auxiliary converter performance to provide the best riding experience for passengers, and further improving the intelligence of the train load shedding control.

[0101] Figure 3 Schematically shows a system connection diagram of a train according to an embodiment of the present disclosure.

[0102] As Figure 3 shown, multiple network units can be set in the train, and the multiple network units can communicate with each other. For the convenience of description, taking the load device as an air conditioner as an example, the network unit is connected to the auxiliary converter and the air conditioner controller through a Multifunction Vehicle Bus (MVB) or Ethernet (ETH). n auxiliary converters n1, n2, n3... nn can be set in the train, and the real-time output power of each auxiliary converter can be a1, a2, a3... an. n air conditioner controllers can also be set, which are c1, c2, c3... cn respectively. Then the real-time output power of the train is M = a1 + a2 +...... + an. The total power of the air conditioners in the train working normally (i.e., full cooling / full heating) is M1, and the theoretical maximum capacity of other load devices in the train (except air conditioners) working normally is M2. The load shedding coefficients of each air conditioner controller are d1, d2, d3...... dn, where d = 1 means no load shedding during normal operation; d = 0.5 means half load; d = 0 means ventilation.

[0103] Figure 4A flowchart of a train AC load control method according to another embodiment of the present disclosure is schematically shown.

[0104] As Figure 4 shown, the method includes operations S401 to S413.

[0105] In operation S401, it is determined whether there is a first auxiliary converter that fails among multiple auxiliary converters in the train. If it is determined to be yes, operation S402 is executed; if it is determined to be no, operation 410 is executed.

[0106] In operation S402, the real-time output power of the second auxiliary converter that is operating normally is obtained.

[0107] In operation S403, the real-time output power of the train is determined according to the real-time output power of the second auxiliary converter.

[0108] In operation S404, the load overload power of the load device is determined according to the load power of the load device.

[0109] In operation S405, it is determined whether the real-time output power of the train is greater than the load overload power of the load device. If it is determined to be no, operation S406 is executed; if it is determined to be yes, operation S410 is executed.

[0110] In operation S406, it is determined whether the real-time output power of the train is greater than the first preset load power of the load device. If it is determined to be no, operation S407 is executed; if it is determined to be yes, operation S411 is executed.

[0111] In operation S407, it is determined whether the real-time output power of the train is greater than the second preset load power of the load device. If it is determined to be no, operation S408 is executed; if it is determined to be yes, operation S412 is executed.

[0112] In operation S408, it is determined whether the real-time output power of the train is greater than the third preset load power of the load device. If it is determined to be no, operation S409 is executed; if it is determined to be yes, operation S413 is executed.

[0113] In operation S409, all the load devices perform a shutdown operation.

[0114] In operation S410, it is determined that the load reduction strategy of the load device is not to reduce the load.

[0115] In operation S411, the first preset number of load devices and the second preset number of load devices alternately perform non-load reduction operations and load reduction operations.

[0116] In operation S412, all the load devices perform a load reduction operation.

[0117] In operation S413, the third preset number of load devices and the fourth preset number of load devices alternately perform load shedding operations and shutdown operations.

[0118] According to an embodiment of the present disclosure, still taking the load device as an air conditioner controller as an example, after multiple auxiliary converters in the train start to work, the real-time output power of each auxiliary converter can be monitored in real time through the network unit. When a1~an are all non-zero, the air conditioner controllers in the train work normally, and the load shedding coefficient is 1 (that is, no load shedding). When the real-time capacity of any one auxiliary converter is zero, it is considered that there is a first auxiliary converter with a fault. When the real-time output power of the train is greater than the load overload power (which can be the sum of 1.1 times the load power of the air conditioner controller and the load power of other loads), the air conditioner controllers of the train work normally, and the load shedding coefficient is 1 (that is, no load shedding). It should be noted that the 1.1 times mentioned here is the air conditioner overload requirement, which is an empirical margin value to ensure the normal operation of the air conditioner and avoid frequent switching of working conditions. It can also be modified to other values according to the actual situation.

[0119] When the real-time output power of the train is less than or equal to the load overload power of the load device and greater than the first preset load power of the load device (which can be the sum of 0.75 times the load power of the air conditioner controller and the load power of other loads), the first preset number (0.5 times the number of air conditioner controllers) of air conditioner controllers can work normally (load shedding coefficient is 1), and the second preset number (0.5 times the number of air conditioner controllers) of air conditioner controllers can work normally (load shedding coefficient is 0.5). The network unit alternately issues load shedding coefficients of 1 and 0.5 to the air conditioner controllers in the train.

[0120] When the real-time output power of the train is less than or equal to the first preset load power of the load device and greater than the second preset load power of the load device (which can be the sum of 0.5 times the load power of the air conditioner controller and the load power of other loads), all the air conditioner controllers of the train can work at half load (load shedding coefficient is 0.5).

[0121] When the real-time output power of the train is less than or equal to the second preset load power of the load device and greater than the third preset load power of the load device (which can be the sum of 0.25 times the load power of the air conditioner controller and the load power of other loads), the third preset number (0.25 times the number of air conditioner controllers) of air conditioner controllers can work at half load (load shedding coefficient is 0.5), and the fourth preset number (0.75 times the number of air conditioner controllers) of air conditioner controllers can work in ventilation mode (load shedding coefficient is 0). The network unit alternately issues load shedding coefficients of 0.5 and 1 to the air conditioner controllers in the train.

[0122] When the real-time output power of the train is less than the third preset load power, the air-conditioning controller of the whole train operates in ventilation mode (with a load reduction coefficient of 0).

[0123] According to an embodiment of the present disclosure, by obtaining the real-time output power of each auxiliary inverter of the whole train and performing dynamic calculations, the real-time output power of the second auxiliary converter is compared and calculated with the load power of the train under different working conditions, and the AC load reduction coefficient of the train is adjusted in real time. For the air-conditioned alternating carriages that implement load reduction and degradation operation under fault conditions, the cycle operation basically ensures the temperature consistency of the whole train, and improves the stability of train operation and the comfort of passengers.

[0124] Figure 5 Schematically shows a block diagram of a train AC load control device according to an embodiment of the present disclosure.

[0125] As Figure 5 shown, the device 500 includes an acquisition module 510, a first determination module 520, a second determination module 530, and a control module 540.

[0126] The acquisition module 510 is configured to obtain the real-time output power of a second auxiliary converter that is operating normally when it is determined that there is a first auxiliary converter that has failed among a plurality of auxiliary converters in the train, where the auxiliary converter is used to provide alternating current to the load devices of the train;

[0127] The first determination module 520 is configured to determine the load reduction control level of the train according to the real-time output power of the second auxiliary converter and the load power of the load devices;

[0128] The second determination module 530 is configured to determine a load reduction strategy that matches the train according to the load reduction control level of the train;

[0129] The control module 540 is configured to control the load devices to perform load reduction according to the load reduction strategy that matches the train.

[0130] According to an embodiment of the present disclosure, the first determination module 520 that determines the load reduction control level of the train according to the real-time output power of the second auxiliary converter and the load power of the load devices includes:

[0131] A first determination sub-module for determining the load overload power of the load devices according to the load power of the load devices;

[0132] A second determination sub-module for determining the real-time output power of the train according to the real-time output power of the second auxiliary converter;

[0133] A third determination sub-module, configured to determine that the load reduction control level of the train is the normal control level when it is determined that the real-time output power of the train is greater than the load overload power of the load device;

[0134] A fourth determination sub-module, configured to determine that the load reduction control level of the train is the abnormal control level when it is determined that the real-time output power of the train is less than or equal to the load overload power of the load device.

[0135] According to an embodiment of the present disclosure, the fourth determination sub-module for determining that the load reduction control level of the train is the abnormal control level when it is determined that the real-time output power of the train is less than or equal to the load overload power of the load device includes:

[0136] A first determination unit, configured to determine that the load reduction control level is the first abnormal control sub-level when it is determined that the real-time output power of the train is less than or equal to the load overload power of the load device and greater than the first preset load power of the load device;

[0137] A second determination unit, configured to determine that the load reduction control level is the second abnormal control sub-level when it is determined that the real-time output power of the train is less than or equal to the first preset load power of the load device and greater than the second preset load power of the load device;

[0138] A third determination unit, configured to determine that the load reduction control level is the third abnormal control sub-level when it is determined that the real-time output power of the train is less than or equal to the second preset load power of the load device and greater than the third preset load power of the load device;

[0139] A fourth determination unit, configured to determine that the load reduction control level is the fourth abnormal control sub-level when it is determined that the real-time output power of the train is less than or equal to the third preset load power of the load device.

[0140] According to an embodiment of the present disclosure, the second determination module 530 for determining a load reduction strategy matching the train according to the load reduction control level of the train includes:

[0141] A fifth determination sub-module, configured to determine that the load reduction strategy of the load device is no load reduction when it is determined that the load reduction control level is the normal control level;

[0142] A sixth determination sub-module, configured to determine that the load reduction strategy of the load device is load reduction when it is determined that the load reduction control level is the abnormal control level.

[0143] According to an embodiment of the present disclosure, the sixth determination sub-module for determining that the load reduction strategy of the load device is load reduction when it is determined that the load reduction control level is the abnormal control level includes:

[0144] A fifth determination unit, configured to determine that the load shedding strategy of the load device is a first load shedding sub-strategy when determining that the abnormal control level is the first abnormal control sub-level;

[0145] A sixth determination unit, configured to determine that the load shedding strategy of the load device is a second load shedding sub-strategy when determining that the abnormal control level is the second abnormal control sub-level;

[0146] A seventh determination unit, configured to determine that the load shedding strategy of the load device is a third load shedding sub-strategy when determining that the abnormal control level is the third abnormal control sub-level;

[0147] An eighth determination unit, configured to determine that the load shedding strategy of the load device is a fourth load shedding sub-strategy when determining that the abnormal control level is the first abnormal control sub-level.

[0148] According to an embodiment of the present disclosure, the first load shedding sub-strategy is that a first preset number of load devices perform no load shedding operation and a second preset number of load devices perform load shedding operation;

[0149] The second load shedding sub-strategy is that all load devices perform load shedding operation;

[0150] The third load shedding sub-strategy is that a third preset number of load devices perform load shedding operation and a fourth preset number of load devices perform shutdown operation;

[0151] The fourth load shedding sub-strategy is that all load devices perform shutdown operation.

[0152] According to an embodiment of the present disclosure, in the first load shedding sub-strategy, the first preset number of load devices and the second preset number of load devices alternately perform no load shedding operation and load shedding operation;

[0153] In the third load shedding sub-strategy, the third preset number of load devices and the fourth preset number of load devices alternately perform load shedding operation and shutdown operation.

[0154] According to an embodiment of the present disclosure, the apparatus further includes:

[0155] A third determination module, configured to determine that the load shedding strategy of the load device is no load shedding when determining that all auxiliary converters in the train are second auxiliary converters.

[0156] Any of a plurality of modules, sub-modules, units, and sub-units according to embodiments of the present disclosure, or at least part of the functions of any of the foregoing may be implemented in one module. Any one or more of the modules, sub-modules, units, and sub-units according to embodiments of the present disclosure may be split into multiple modules for implementation. Any one or more of the modules, sub-modules, units, and sub-units according to embodiments of the present disclosure may be at least partially implemented as a hardware circuit, such as a field programmable gate array (FPGA), programmable logic array (PLA), system on chip, system on substrate, system on package, application specific integrated circuit (ASIC), or may be implemented by any other reasonable means of integrating or packaging circuits, such as hardware or firmware, or may be implemented in any one of the three implementation manners of software, hardware, and firmware, or in any appropriate combination of several of them. Alternatively, one or more of the modules, sub-modules, units, and sub-units according to embodiments of the present disclosure may be at least partially implemented as a computer program module, and when the computer program module is run, the corresponding functions may be executed.

[0157] For example, any number of the fetch module 510, the first determination module 520, the second determination module 530, and the control module 540 may be combined and implemented in one module / unit / sub-unit, or any one of the foregoing modules / units / sub-units may be split into multiple modules / units / sub-units. Alternatively, at least part of the functions of one or more of these modules / units / sub-units may be combined with at least part of the functions of other modules / units / sub-units and implemented in one module / unit / sub-unit. According to embodiments of the present disclosure, at least one of the fetch module 510, the first determination module 520, the second determination module 530, and the control module 540 may be at least partially implemented as a hardware circuit, such as a field programmable gate array (FPGA), programmable logic array (PLA), system on chip, system on substrate, system on package, application specific integrated circuit (ASIC), or may be implemented by any other reasonable means of integrating or packaging circuits, such as hardware or firmware, or may be implemented in any one of the three implementation manners of software, hardware, and firmware, or in any appropriate combination of several of them. Alternatively, at least one of the fetch module 510, the first determination module 520, the second determination module 530, and the control module 540 may be at least partially implemented as a computer program module, and when the computer program module is run, the corresponding functions may be executed.

[0158] It should be noted that the part of the train AC load control device in the embodiments of the present disclosure corresponds to the part of the train AC load control method in the embodiments of the present disclosure. For the description of the train AC load control device part, please refer to the train AC load control method part for details, and it will not be elaborated herein.

[0159] Figure 6 A block diagram of a train according to an embodiment of the present disclosure is schematically shown.

[0160] As Figure 6 shown, the train 600 includes a train AC load control device 610 according to an embodiment of the present disclosure.

[0161] Figure 7 A block diagram of an electronic device suitable for implementing the method described above according to an embodiment of the present disclosure is schematically shown. Figure 7 The electronic device shown is only an example and should not impose any limitations on the functions and usage scope of the embodiments of the present disclosure.

[0162] As Figure 7 shown, the electronic device 700 according to an embodiment of the present disclosure includes a processor 701, which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 702 or a program loaded from a storage section 708 into a random access memory (RAM) 703. The processor 701 can include, for example, a general microprocessor (such as a CPU), an instruction set processor, and / or a related chipset, and / or a dedicated microprocessor (such as an application specific integrated circuit (ASIC)), and so on. The processor 701 can also include on-board memory for caching purposes. The processor 701 can include a single processing unit or multiple processing units for performing different actions of the method flow according to an embodiment of the present disclosure.

[0163] In the RAM 703, various programs and data required for the operation of the electronic device 700 are stored. The processor 701, the ROM 702, and the RAM 703 are connected to each other through a bus 704. The processor 701 executes various operations of the method flow according to an embodiment of the present disclosure by executing the programs in the ROM 702 and / or the RAM 703. It should be noted that the program can also be stored in one or more memories other than the ROM 702 and the RAM 703. The processor 701 can also execute various operations of the method flow according to an embodiment of the present disclosure by executing the programs stored in the one or more memories.

[0164] According to an embodiment of the present disclosure, the electronic device 700 may further include an input / output (I / O) interface 705, and the input / output (I / O) interface 705 is also connected to the bus 704. The electronic device 700 may further include one or more of the following components connected to the input / output (I / O) interface 705: an input part 706 including a keyboard, a mouse, etc.; an output part 707 including a cathode ray tube (CRT), a liquid crystal display (LCD), etc. and a speaker, etc.; a storage part 708 including a hard disk, etc.; and a communication part 709 including a network interface card such as a LAN card, a modem, etc. The communication part 709 performs communication processing via a network such as the Internet. The drive 710 is also connected to the input / output (I / O) interface 705 as needed. A removable medium 711, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is installed on the drive 710 as needed so that a computer program read from it can be installed into the storage part 708 as needed.

[0165] According to an embodiment of the present disclosure, the method flow according to the embodiment of the present disclosure may be implemented as a computer software program. For example, an embodiment of the present disclosure includes a computer program product, which includes a computer program carried on a computer-readable storage medium, and the computer program includes program codes for executing the method shown in the flowchart. In such an embodiment, the computer program may be downloaded and installed from the network through the communication part 709, and / or installed from the removable medium 711. When the computer program is executed by the processor 701, the above functions defined in the system of the embodiment of the present disclosure are executed. According to an embodiment of the present disclosure, the above-described system, device, apparatus, module, unit, etc. may be implemented by computer program modules.

[0166] The present disclosure also provides a computer-readable storage medium, which may be included in the device / apparatus / system described in the above embodiments; or may exist separately without being assembled into the device / apparatus / system. The above computer-readable storage medium carries one or more programs, and when the above one or more programs are executed, the method according to the embodiment of the present disclosure is implemented.

[0167] According to an embodiment of the present disclosure, the computer-readable storage medium may be a non-volatile computer-readable storage medium. For example, it may include but is not limited to: portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the above. In the present disclosure, the computer-readable storage medium may be any tangible medium that contains or stores a program, and this program can be used by or in conjunction with an instruction execution system, device, or apparatus.

[0168] For example, according to an embodiment of the present disclosure, the computer-readable storage medium may include one or more memories other than the above-described ROM 702 and / or RAM 703 and / or ROM 702 and RAM 703.

[0169] Embodiments of the present disclosure also include a computer program product, which includes a computer program that contains program code for executing the method provided by the embodiments of the present disclosure. When the computer program product runs on an electronic device, the program code is used to cause the electronic device to implement the train AC load control method provided by the embodiments of the present disclosure.

[0170] When the computer program is executed by the processor 701, the above functions defined in the system / apparatus of the embodiments of the present disclosure are executed. According to an embodiment of the present disclosure, the above-described systems, apparatuses, modules, units, etc. may be implemented by computer program modules.

[0171] In one embodiment, the computer program may rely on tangible storage media such as optical storage devices and magnetic storage devices. In another embodiment, the computer program may also be transmitted and distributed in the form of a signal on a network medium, and be downloaded and installed through the communication part 709, and / or be installed from the removable medium 711. The program code included in the computer program can be transmitted by any suitable network medium, including but not limited to: wireless, wired, etc., or any suitable combination of the above.

[0172] According to embodiments of the present disclosure, program code for executing the computer programs provided by the embodiments of the present disclosure can be written in any combination of one or more programming languages. Specifically, these computing programs can be implemented using high-level procedural and / or object-oriented programming languages, and / or assembly / machine languages. Programming languages include, but are not limited to, programming languages such as Java, C++, Python, the "C" language, or similar programming languages. The program code can be executed entirely on the user's computing device, partially on the user's device, partially on a remote computing device, or entirely on a remote computing device or server. In cases involving a remote computing device, the remote computing device can be connected to the user's computing device through any type of network, including a local area network (LAN) or a wide area network (WAN), or can be connected to an external computing device (e.g., by connecting through the Internet using an Internet service provider).

[0173] The flowcharts and block diagrams in the accompanying drawings illustrate the possible architectures, functions, and operations of systems, methods, and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagram can represent a module, a program segment, or a part of code that 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 blocks may occur in a different order than that marked in the accompanying drawings. For example, two consecutive blocks shown may actually be executed substantially in parallel, and they may sometimes be executed in the reverse order, depending on the functions involved. It should also be noted that each block in the block diagram or flowchart, and combinations of blocks in the block diagram or flowchart, can be implemented using a dedicated hardware-based system that performs the specified functions or operations, or can be implemented using a combination of dedicated hardware and computer instructions. Those skilled in the art can understand that the features described in the various embodiments of the present disclosure can be combined and / or combined in various ways, even if such combinations or combinations are not explicitly described in the present disclosure. In particular, without departing from the spirit and teachings of the present disclosure, the features described in the various embodiments of the present disclosure can be combined and / or combined in various ways. All such combinations and / or combinations fall within the scope of the present disclosure.

[0174] The above describes the embodiments of the present disclosure. However, these embodiments are for illustrative purposes only and are not intended to limit the scope of the present disclosure. Although the embodiments are described separately above, this does not mean that the measures in each embodiment cannot be used advantageously in combination. Without departing from the scope of the present disclosure, those skilled in the art can make various substitutions and modifications, and all such substitutions and modifications should fall within the scope of the present disclosure.

Claims

1. A method for controlling AC loads of a train, comprising: When it is determined that there is a first auxiliary converter with a fault among multiple auxiliary converters in the train, obtaining the real-time output power of a second auxiliary converter that is operating normally, where the auxiliary converter is used to provide alternating current to the load devices of the train; Determining the load reduction control level of the train according to the real-time output power of the second auxiliary converter and the load power of the load devices; Determining a load reduction strategy matching the train according to the load reduction control level of the train; Controlling the load devices to reduce load according to the load reduction strategy matching the train.

2. The method according to claim 1, wherein The step of determining the load reduction control level of the train according to the real-time output power of the second auxiliary converter and the load power of the load devices includes: Determining the load overload power of the load devices according to the load power of the load devices; Determining the real-time output power of the train according to the real-time output power of the second auxiliary converter; When it is determined that the real-time output power of the train is greater than the load overload power of the load devices, determining that the load reduction control level of the train is the normal control level; When it is determined that the real-time output power of the train is less than or equal to the load overload power of the load devices, determining that the load reduction control level of the train is the abnormal control level.

3. The method according to claim 2, wherein, The step of determining that the load reduction control level of the train is the abnormal control level when it is determined that the real-time output power of the train is less than or equal to the load overload power of the load devices includes: When it is determined that the real-time output power of the train is less than or equal to the load overload power of the load devices and greater than the first preset load power of the load devices, determining that the load reduction control level is the first abnormal control sub-level; When it is determined that the real-time output power of the train is less than or equal to the first preset load power of the load devices and greater than the second preset load power of the load devices, determining that the load reduction control level is the second abnormal control sub-level; When it is determined that the real-time output power of the train is less than or equal to the second preset load power of the load devices and greater than the third preset load power of the load devices, determining that the load reduction control level is the third abnormal control sub-level; When it is determined that the real-time output power of the train is less than or equal to the third preset load power of the load devices, determining that the load reduction control level is the fourth abnormal control sub-level.

4. The method according to claim 3, wherein The step of determining a load reduction strategy matching the train according to the load reduction control level of the train includes: When it is determined that the load reduction control level is the normal control level, determining that the load reduction strategy of the load devices is not to reduce load; When it is determined that the load reduction control level is the abnormal control level, determining that the load reduction strategy of the load devices is to reduce load.

5. The method according to claim 4, wherein, The step of determining that the load reduction strategy of the load devices is to reduce load when it is determined that the load reduction control level is the abnormal control level includes: When it is determined that the abnormal control level is the first abnormal control sub - level, determine that the load shedding strategy of the load device is the first load shedding sub - strategy; When it is determined that the abnormal control level is the second abnormal control sub - level, determine that the load shedding strategy of the load device is the second load shedding sub - strategy; When it is determined that the abnormal control level is the third abnormal control sub - level, determine that the load shedding strategy of the load device is the third load shedding sub - strategy; When it is determined that the abnormal control level is the first abnormal control sub - level, determine that the load shedding strategy of the load device is the fourth load shedding sub - strategy.

6. The method according to claim 7, wherein, The first load shedding sub - strategy is that a first preset number of load devices perform no load shedding operation and a second preset number of load devices perform load shedding operation; The second load shedding sub - strategy is that all the load devices perform load shedding operation; The third load shedding sub - strategy is that a third preset number of the load devices perform load shedding operation and a fourth preset number of the load devices perform shutdown operation; The fourth load shedding sub - strategy is that all the load devices perform shutdown operation.

7. The method according to claim 6, wherein In the first load shedding sub - strategy, the first preset number of load devices and the second preset number of load devices alternately perform no load shedding operation and load shedding operation; In the third load shedding sub - strategy, the third preset number of the load devices and the fourth preset number of the load devices alternately perform load shedding operation and shutdown operation.

8. The method according to any one of claims 1 - 7, further comprising: When it is determined that multiple auxiliary converters in the train are all the second auxiliary converters, determine that the load shedding strategy of the load device is no load shedding.

9. A train AC load control device, comprising: An acquisition module, configured to acquire the real - time output power of a second auxiliary converter that is working normally when it is determined that there is a faulty first auxiliary converter among multiple auxiliary converters in the train, wherein the auxiliary converter is used to provide alternating current to the load devices of the train; A first determination module, configured to determine the load shedding control level of the train according to the real - time output power of the second auxiliary converter and the load power of the load devices; A second determination module, configured to determine a load shedding strategy matching the train according to the load shedding control level of the train; A control module, configured to control the load devices to perform load shedding according to the load shedding strategy matching the train.

10. A train, comprising: The train AC load control device according to claim 9.

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