Train operation control method and device, electronic equipment, storage medium, program product and train

Abstract

The invention provides a train operation control method and device, electronic equipment, a storage medium, a program product and a train, and is applied to the technical field of railway vehicles. The train operation control method comprises the steps that a first control instruction is generated in response to a received first early warning signal indicating a short-circuit fault of at least one first fault traction motor, the first early warning signal is generated in response to detection that at least one first fault traction motor exists, the first fault traction motor is in a fault detection period, and the first control instruction is generated in response to the short-circuit fault of at least one first fault traction motor. A traction motor having two first target windings or a traction motor having two second target windings; and a first control instruction is sent to a traction control unit, so that the traction control unit adjusts the traction force of the at least one first fault traction motor into a first target traction force according to the first control instruction, and the first target traction force is smaller than the traction force of the first fault traction motor before the fault.

Description

Train operation control methods, devices, electronic equipment, storage media, program products, and trains Technical Field

[0001] This disclosure relates to the field of rail vehicle technology, and more specifically, to a train operation control method, device, electronic equipment, storage medium, program product, and train. Background Technology

[0002] Traction motors are widely used in rail transit systems. For example, traction motors can include permanent magnet motors. Inter-turn short-circuit faults in traction motors can cause them to malfunction, disrupting train operations and potentially even causing fires. Therefore, timely and accurate detection of inter-turn short-circuit faults in traction motors and appropriate emergency response are crucial for improving train operation order and safety.

[0003] However, the lack of timeliness in detecting short-turn faults in traction motors affects the initiative in train operation control. Summary of the Invention

[0004] In view of the above, this disclosure provides a train operation control method, apparatus, electronic device, storage medium, program product, and train.

[0005] The first aspect of this disclosure provides a train operation control method. The method includes: generating a first control command in response to receiving a first warning signal indicating a short-circuit fault in at least one first faulty traction motor, wherein the first warning signal is generated in response to detecting the presence of at least one first faulty traction motor, the first faulty traction motor being either a traction motor with two first target windings or a traction motor with two second target windings during a fault detection cycle, the two first target windings being two windings in the same traction motor whose temperature change parameters differ from a first temperature threshold, and the two second target windings being windings in their respective traction motors whose temperature change parameters differ from a second temperature threshold, and the two second target windings belonging to different traction motors; sending the first control command to a traction control unit, such that the traction control unit adjusts the traction force of each of the at least one first faulty traction motors to a first target traction force according to the first control command, wherein the first target traction force is less than the traction force of the first faulty traction motor before the fault.

[0006] According to an embodiment of this disclosure, when the traction force of at least one first faulty traction motor is adjusted to a first target traction force according to a first control command, the method further includes: generating a second control command in response to the number of first warning signals received during a fault detection cycle being greater than or equal to a first threshold number; sending the second control command to a traction control unit and a braking control unit so that the traction control unit and the braking control unit control the train to run or suspend operation at a first limited speed according to the second control command, wherein the first limited speed is less than the normal operating speed of the train.

[0007] According to an embodiment of this disclosure, the second control command is used to instruct the traction control unit to control the power switching device of the traction converter corresponding to at least one first faulty traction motor to perform a three-phase short-circuit operation, so as to achieve coordinated control with the braking control unit to stop the train operation.

[0008] According to embodiments of this disclosure, the method further includes: generating a third control command in response to receiving a second warning signal indicating a short circuit fault in a second faulty traction motor, wherein the second warning signal is generated in response to detecting the presence of a second faulty traction motor, the second faulty traction motor being a traction motor having at least one third target winding during the fault detection period, the third target winding being a winding whose temperature change parameter is greater than or equal to a third temperature threshold; and sending the third control command to a traction control unit so that the traction control unit adjusts the traction force of each of the at least one second faulty traction motor to a second target traction force according to the third control command, wherein the second target traction force is less than the traction force of the second faulty traction motor before the fault.

[0009] According to an embodiment of this disclosure, when the traction force of each of at least one second faulty traction motors is adjusted to a second target traction force according to a third control command, the method further includes: generating a fourth control command in response to the number of second warning signals received during the fault detection cycle being greater than or equal to a second threshold number; sending the fourth control command to the traction control unit and the braking control unit so that the traction control unit and the braking control unit control the train to run or suspend operation at a second limited speed according to the fourth control command, wherein the second limited speed is less than the normal operating speed of the train.

[0010] According to an embodiment of this disclosure, the fourth control command is used to instruct the traction control unit to control the power switching device of the traction converter corresponding to the second faulty traction motor to perform a three-phase short circuit operation, so as to achieve coordinated control with the braking control unit to stop the train from running.

[0011] According to embodiments of this disclosure, the method further includes: generating a fifth control command in response to receiving a third warning signal indicating a short-circuit fault in a third faulty traction motor, wherein the third warning signal is generated in response to detecting the presence of a third faulty traction motor, the third faulty traction motor being a traction motor having at least one target bearing present during the fault detection period, the bearing being a bearing whose temperature change parameter is greater than or equal to a fourth temperature threshold; and sending the fifth control command to a traction control unit so that the traction control unit adjusts the traction force of each of the at least one third faulty traction motor to a third target traction force according to the fifth control command, wherein the third target traction force is less than the traction force of the third faulty traction motor before the fault.

[0012] According to an embodiment of this disclosure, when the traction force of at least one third faulty traction motor is adjusted to a third target traction force according to a sixth control command, the method further includes: generating a sixth control command in response to the number of third warning signals received during the fault detection cycle being greater than or equal to a third threshold number; sending the sixth control command to the traction control unit and the braking control unit so that the traction control unit and the braking control unit control the train to run or suspend operation at a third limited speed according to the sixth control command, wherein the third limited speed is less than the normal operating speed of the train.

[0013] According to an embodiment of this disclosure, the sixth control command is used to instruct the traction control unit to control the power switching device of the traction converter corresponding to the third faulty traction motor to perform a three-phase short circuit operation, so as to achieve coordinated control with the braking control unit to stop the train from running.

[0014] A second aspect of this disclosure provides a train operation control device. The device includes a generation module and a transmission module. The generation module is configured to generate a first control command in response to receiving a first warning signal indicating a short-circuit fault in at least one first faulty traction motor. The first warning signal is generated in response to detecting the presence of at least one first faulty traction motor. The first faulty traction motor is either a traction motor with two first target windings or two second target windings during a fault detection cycle. The two first target windings are two windings in the same traction motor whose temperature change parameters differ from a first temperature threshold. The two second target windings are windings in their respective traction motors whose temperature change parameters differ from a second temperature threshold. The two second target windings belong to different traction motors. The transmission module is configured to send the first control command to a traction control unit, so that the traction control unit adjusts the traction force of each of the at least one first faulty traction motors to a first target traction force, wherein the first target traction force is less than the traction force of the first faulty traction motor before the fault.

[0015] A third aspect of this disclosure provides an electronic device, including: one or more processors; and a memory for storing one or more programs, wherein when the one or more programs are executed by the one or more processors, the one or more processors cause the one or more processors to implement the method described above.

[0016] A fourth aspect of this disclosure provides a computer-readable storage medium having executable instructions stored thereon, which, when executed by a processor, cause the processor to perform the method described above.

[0017] A fifth aspect of this disclosure provides a computer program product including a computer program that, when executed by a processor, implements the method described above.

[0018] A sixth aspect of this disclosure provides a train, including a train control unit and a traction control unit. The train control unit is configured to generate a first control command in response to receiving a first warning signal indicating a short-circuit fault in at least one first faulty traction motor. The first warning signal is generated in response to detecting the presence of at least one first faulty traction motor. The first faulty traction motor is either a traction motor with two first target windings or two second target windings during a fault detection cycle. The two first target windings are two windings in the same traction motor whose temperature change parameters differ from a first temperature threshold. The two second target windings are windings in their respective traction motors whose temperature change parameters differ from a second temperature threshold. The two second target windings belong to different traction motors. The traction control unit is configured to adjust the traction force of each of the at least one first faulty traction motors to a first target traction force according to the first control command. The first target traction force is less than the traction force of the first faulty traction motor before the fault.

[0019] According to embodiments of this disclosure, by collecting temperature change parameters of each target winding in the traction motor, and utilizing the difference in temperature change parameters of the first target winding on the same traction motor or the temperature change parameters of the second target winding on different traction motors, a first warning signal indicating a first faulty traction motor in the train is generated, improving the timeliness of short-circuit fault warning. Based on the first control command generated from the first warning signal, the traction control unit reduces the traction force of the first faulty traction motor, reducing the risk of further expansion of the traction motor fault and the possibility of causing a fire, thereby improving train operation order and train operation safety. Attached Figure Description

[0020] The above and other objects, features and advantages of this disclosure will become clearer from the following description of embodiments with reference to the accompanying drawings, in which:

[0021] Figure 1 schematically illustrates an exemplary system architecture to which the train operation control method of this disclosure can be applied;

[0022] Figure 2 schematically illustrates a flowchart of a train operation control method according to an embodiment of the present disclosure;

[0023] Figure 3 schematically shows a structural block diagram of a train operation control device according to an embodiment of the present disclosure;

[0024] Figure 4 schematically illustrates a block diagram of an electronic device suitable for implementing a train operation control method according to an embodiment of the present disclosure. Detailed Implementation

[0025] The embodiments of the present disclosure will now 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 disclosure. In the following detailed description, numerous specific details are set forth to provide a thorough understanding of the embodiments of the present disclosure for ease of explanation. However, it will be apparent that one or more embodiments may be practiced without these specific details. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concepts of the present disclosure.

[0026] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this disclosure. The terms “comprising,” “including,” etc., as used herein indicate the presence of the stated features, steps, operations, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, or components.

[0027] All terms used herein (including technical and scientific terms) have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein are to be interpreted in a manner consistent with the context of this specification, and not in an idealized or overly rigid way.

[0028] When using expressions such as "at least one of A, B and C", they should generally be interpreted in accordance with the meaning that is commonly understood by those skilled in the art (e.g., "a system having at least one of A, B and C" should include, but is not limited to, a system having A alone, a system having B alone, a system having C alone, a system having A and B, a system having A and C, a system having B and C, and / or a system having A, B and C, etc.).

[0029] Traction motors, such as permanent magnet motors, have advantages such as high power density and high energy efficiency, and are widely used in rail transit systems. However, in the stator windings of permanent magnet electrodes, electrical connections can occur between adjacent turns that should be insulated from each other due to insulation damage or other reasons. This creates inter-turn short circuits, resulting in adverse effects such as increased current, localized overheating, uneven magnetic field distribution, and decreased performance of the permanent magnet motor.

[0030] (1) Increased current: A short circuit between turns of the traction motor will cause a circulating current to form in the short-circuited turns, resulting in an increase in the current in the stator winding. If the current in the stator winding exceeds its rated current, it will cause the traction motor to generate additional heat.

[0031] (2) Local overheating: The increased current in the stator winding of the traction motor when a short circuit occurs will generate additional heat, causing local overheating inside the traction motor. This will accelerate the aging of the insulation layer between the wire turns at the overheated location, and in severe cases, it may even cause the stator winding to burn out.

[0032] (3) Uneven magnetic field distribution: Some turns of the stator winding in the traction motor have inter-turn short circuit faults, which reduces the uniformity of the distributed magnetic field formed by the traction motor, thereby causing the torque of the traction motor to deviate and thus reducing its own operating performance.

[0033] (4) Degradation of motor performance: Inter-turn short circuit of traction motor will reduce the output power of traction motor, reduce operating efficiency, and worsen power factor. In severe cases, it may cause traction motor to fail to operate normally, affecting train operation order and even causing fire.

[0034] Traction motor short-turn fault detection methods may include:

[0035] (1) Induction method: Using the principle of electromagnetic induction, a short circuit detector is placed across the slot of the stator winding of the traction motor. By detecting whether the iron piece on the slot of the short circuit detector vibrates, it can be determined whether there is a short circuit fault in the traction motor.

[0036] (2) Observation method: By observing whether the insulation layer of the stator winding coil end and the wire slot is damaged, burnt, or has an odor, it can be determined whether the traction motor has a short circuit fault.

[0037] (3) Multimeter or megohmmeter test method: Use a multimeter or megohmmeter to test the insulation resistance between any two phase stator windings of the traction motor. If the insulation resistance is extremely small or even zero, the traction motor may have an inter-turn short circuit fault.

[0038] (4) Temperature detection method: Under the condition that the traction motor runs unloaded for a predetermined period of time, check whether the temperature of each part of the stator winding exceeds the normal temperature. If the temperature of the stator winding exceeds the normal temperature, it indicates that the traction motor may have an inter-turn short circuit fault.

[0039] (5) Power-on test method: Use an ammeter to test the current in the stator winding. If the current in the stator winding exceeds the normal current value, it indicates that the traction motor may have an inter-turn short circuit fault.

[0040] However, the above detection methods are not timely enough in detecting short-turn faults in traction motors, which affects the initiative of train operation control.

[0041] In view of this, the present disclosure provides a train operation control method, device, electronic equipment, storage medium, program product, and train. This method, to a certain extent, solves the problems of rapid fault propagation leading to operational disruptions and train fires caused by the inability to promptly diagnose traction motor short-turn faults. It can improve the timeliness of traction motor short-turn fault diagnosis, guide train emergency response, and ensure train operation order and safety.

[0042] Figure 1 schematically illustrates an exemplary system architecture to which the train operation control method of this disclosure can be applied. It should be noted that Figure 1 is merely an example of a system architecture to which embodiments of this disclosure can be applied, to help those skilled in the art understand the technical content of this disclosure, but does not imply that embodiments of this disclosure cannot be used in other devices, systems, environments, or scenarios.

[0043] As shown in Figure 1, the system architecture 100 according to this embodiment may include a host computer display unit 101, a train control unit 102, a traction control unit 103, a braking control unit 104, and a data acquisition unit 105.

[0044] The host computer display unit 101 is configured to display real-time train operation information and fault information. Operation information may include at least one of the following: train speed, target position, direction of travel, distance traveled, and travel duration. Fault information may include traction motor short-circuit faults or other fault information. The host computer display unit 101 can also function as an interactive page. Train drivers and conductors can input control commands for the train through the host computer display unit 101, such as at least one of the following commands: traction command, braking command, etc.

[0045] The train control unit 102, serving as the train's control center, is configured to receive control commands from the host computer display unit 101 and send these commands to at least one of the execution units, such as the traction control unit 103 and the braking control unit 104. The train control unit 102 is also configured to receive operating status information from the execution units and data collected by the acquisition unit 105, and to report this information to the host computer display unit 101 so that the driver and conductor can input control commands for the train based on the operating status information from the execution units and the data collected by the acquisition unit 105.

[0046] The traction control unit 103 is configured to execute the train's traction commands and drive multiple traction motors, such as traction motor 1, traction motor 2, and traction motor 3 in Figure 1. The number of traction motors can be set according to actual needs, and this disclosure does not limit it. The traction motor, such as the permanent magnet motor in this embodiment, may include a stator and a rotor. Control-level sensors are installed on the traction motor. These control-level sensors may include at least one of the following: a transmission end bearing sensor, a non-transmission end bearing sensor, and a winding temperature sensor. Multiple winding temperature sensors can be installed on the same traction motor, distributed on multiple stator windings of the traction motor.

[0047] The braking control unit 104 is configured to execute the braking command of the train and, in conjunction with the traction command of the traction control unit 103 issued by the train control unit 102, control the train's running speed.

[0048] The acquisition unit 105 is configured to acquire temperature data collected by the control-level sensors on the traction motor in real time and send the temperature data to the train control unit 102, so that the train control unit 102 can issue an early warning to the host computer display unit 101 based on the threshold temperature set on each sensor.

[0049] It should be understood that the number of systems, units, and devices in Figure 1 is merely illustrative. The number of systems, units, and devices can be increased or decreased according to the actual application scenario.

[0050] Figure 2 schematically illustrates a flowchart of a train operation control method according to an embodiment of the present disclosure.

[0051] As shown in Figure 2, the method 200 may include operations S210~S220.

[0052] In operation S210, in response to receiving a first warning signal indicating at least one first fault traction motor short circuit fault, a first control command is generated.

[0053] The train in this embodiment can be a train traveling at a normal operating speed. The traction motor can include a permanent magnet motor. The temperature variation parameters of the traction motor can be collected by winding temperature sensors installed on different windings of the traction motor.

[0054] The first control command is generated based on a first warning signal. The first warning signal indicates that at least one traction motor in the train's traction motors is faulty. During the fault detection period, the first faulty traction motor can be a traction motor with two first target windings, or it can be a traction motor with a second target winding.

[0055] Two first target windings are located in the same traction motor. The first target windings can be two windings whose temperature change parameter difference is greater than or equal to a first temperature threshold. The temperature change parameter of the traction motor winding can be a temperature change value or a temperature change rate over a predetermined time period. For example, the first temperature threshold can be 3 °C / s. The second target windings can each be located in different traction motors. The second target winding can be the winding in each traction motor whose temperature change parameter difference is greater than or equal to a second temperature threshold. The second temperature threshold can be the same as or different from the first temperature threshold; this disclosure does not limit this. For example, the second temperature threshold can be 5 °C / s.

[0056] For example, during train operation, the temperature change parameters of multiple windings in each traction motor can be monitored in real time. When the difference in temperature change parameters between any two windings in the same traction motor is greater than or equal to 3 ℃ / s, the train control unit generates a first warning signal indicating that the traction motor is the first faulty traction motor; or when the difference in temperature change parameters between any two windings with the highest temperature change parameter is greater than or equal to 5 ℃ / s, the train control unit generates a first warning signal indicating that the traction motor to which the winding with the higher temperature change parameter belongs is the first faulty traction motor. Based on the first warning signal, the train control unit generates a first control command.

[0057] In operation S220, a first control command is sent to the traction control unit so that the traction control unit adjusts the traction force of at least one first faulty traction motor to the first target traction force according to the first control command.

[0058] A first control command is sent to the traction control unit so that the traction control unit adjusts the traction force of at least one first faulty traction motor to the first target traction force according to the first control command.

[0059] The traction control unit is configured to execute the train's traction commands and drive the traction motors. Based on a first control command, the traction control unit can adjust the indicated traction force of the traction motors to a first target traction force. The first target traction force is less than the traction force of the first failed traction motor before the fault.

[0060] According to embodiments of this disclosure, by collecting temperature change parameters of each target winding in the traction motor, and utilizing the difference in temperature change parameters of the first target winding on the same traction motor or the temperature change parameters of the second target winding on different traction motors, a first warning signal indicating a first faulty traction motor in the train is generated, improving the timeliness of short-circuit fault warning. Based on the first control command generated from the first warning signal, the traction control unit reduces the traction force of the first faulty traction motor, reducing the risk of further expansion of the traction motor fault and the possibility of causing a fire, thereby improving train operation order and train operation safety.

[0061] In a specific embodiment, when the traction force of at least one first faulty traction motor is adjusted to the first target traction force according to the first control command, a second control command can be generated when the number of first warning signals received by the train control unit during the fault detection cycle is greater than or equal to the first number threshold.

[0062] In a specific embodiment, a second control command can be sent to the traction control unit and the braking control unit so that the traction control unit and the braking control unit can control the train to run at the first limit speed or stop running according to the second control command.

[0063] While reducing the traction force of the first faulty traction motor to the first target traction force, the temperature change parameters of each winding of the train traction motor continue to be collected. When the number of times the train control unit receives the first warning signal is greater than or equal to the first threshold, a second control command is generated. The first threshold can be set according to actual needs, for example, it can be 2 times.

[0064] The second control command instructs the train to operate at a first restricted speed or to suspend operation after reducing the traction force of the first faulty traction motor. The first restricted speed can be lower than the train's normal operating speed. For example, if the train's normal operating speed is 300 km / h, the first restricted speed could be 100 km / h.

[0065] For example, when the traction force of the first faulty traction motor is reduced to the first target traction force, if the difference in temperature change parameters between any two windings of the same traction motor is still greater than or equal to 3 ℃ / s, or the difference in temperature change parameters between the windings with the highest temperature change parameters in any two traction motors is still greater than or equal to 5 ℃ / s, the train control unit will still receive the first warning signal. If the number of warning signals received is greater than or equal to 2, the train will be controlled to run at the first limited speed or be suspended. The train running at the first limited speed or being suspended can be set according to the actual situation, and this disclosure does not make specific limitations.

[0066] According to embodiments of this disclosure, after reducing the traction force of the first faulty traction motor to the first target traction force, in order to further determine the short circuit fault of the traction motor, the acquisition system will continue to collect temperature change parameters collected by the temperature sensors of each winding to take further measures for the train. This can improve the accuracy of determining the warning signal, reduce the risk of disrupting the normal operation of the train due to misjudgment, reduce the burden of emergency response on the driver and passengers, improve the timeliness of emergency response, and improve the safety of train operation while improving the order of train operation.

[0067] In a specific embodiment, the second control command may instruct the traction control unit to control the power switching devices of the traction converter corresponding to at least one first faulty traction motor to perform a three-phase short-circuit operation, so as to achieve coordinated control with the braking control unit to stop the train from running.

[0068] Three-phase short-circuit operation is a protection measure based on the second control command. After the second control command is triggered, the traction converter can short-circuit the power switching components and work with the brake control unit to stop the train from running.

[0069] According to embodiments of this disclosure, the method, while reducing the traction force of the traction motor in a train malfunction, takes further measures to address the train based on the number of times a first warning signal is continuously received. This ensures the order of train operation, reduces the risk of further escalation of the malfunction and the possibility of fire, and improves the safety of train operation.

[0070] In a specific embodiment, a third control command can be generated in response to receiving a second warning signal indicating a second fault traction motor short circuit fault.

[0071] In a specific embodiment, a third control command is sent to the traction control unit so that the traction control unit adjusts the traction force of at least one second faulty traction motor to the second target traction force according to the third control command.

[0072] The third control command is generated based on the second warning signal. The second warning signal indicates that there is a second faulty traction motor among the train's traction motors. During the fault detection period, the second faulty traction motor can be a traction motor with a third target winding.

[0073] The third target winding can be a winding whose temperature change parameter is greater than or equal to a third temperature threshold. The temperature change parameter of the traction motor winding can be the temperature change value of the winding or the rate of temperature change over a predetermined period of time. For example, the third temperature threshold can be 9 ℃ / s, etc.

[0074] A third control command is sent to the traction control unit, so that the traction control unit adjusts the traction force of each of the second faulty traction motors to a second target traction force according to the third control command. The second target traction force can be less than the traction force of the second faulty traction motor before the fault. The second target traction force can also be less than the first target traction force.

[0075] For example, during train operation, if the temperature change parameter of any winding in the traction motor is greater than or equal to 9 ℃ / s, the train control unit generates a second warning signal indicating that the traction motor is the second faulty traction motor. Based on the second warning signal, the train control unit generates a third control command, causing the traction force of the second faulty traction motor to be reduced to a second target traction force.

[0076] According to embodiments of this disclosure, during the process of collecting traction motor temperature change parameters, while detecting the difference in temperature change parameters between different windings, the temperature change parameters of each winding are also taken as the detection object. This can further determine the accuracy of the warning signal, reduce the risk of disrupting the normal operation of the train due to misjudgment, and improve the safety of train operation.

[0077] In a specific embodiment, when the traction force of each of the second faulty traction motors is adjusted to the second target traction force according to the third control command, the train control unit can generate a fourth control command if the number of second warning signals received within the fault detection cycle is greater than or equal to the second threshold number.

[0078] In a specific embodiment, a fourth control command can be sent to the traction control unit and the braking control unit so that the traction control unit and the braking control unit can control the train to run at the second speed limit or stop running according to the fourth control command.

[0079] While reducing the traction force of the second faulty traction motor to the second target traction force, the temperature change parameters of each winding of the train traction motor continue to be collected. When the number of times the train control unit receives the second warning signal is greater than or equal to the second threshold, a fourth control command is generated. The second threshold can be the same as or different from the first threshold, and can be set according to actual needs, for example, it can be 2 times.

[0080] The fourth control command instructs the train to operate at a second restricted speed or to suspend operation after reducing the traction force of the second faulty traction motor. The second restricted speed can be lower than the train's normal operating speed. For example, the second restricted speed could be 40 km / h.

[0081] For example, when the traction force of the second faulty traction motor is reduced to the second target traction force, if the difference in temperature change parameters of any winding of the traction motor is greater than or equal to 9 ℃ / s, the train control unit will still receive the second warning signal. If the number of warning signals received is greater than or equal to 2, the train will be controlled to run at the second limit speed or be suspended. The train running at the second limit speed or being suspended can be set by the driver and conductor according to the actual situation, and this disclosure does not make specific limitations.

[0082] According to embodiments of this disclosure, after reducing the traction force of the second faulty traction motor to the second target traction force, in order to further determine the short-circuit fault of the traction motor, the acquisition system will continue to collect temperature change parameters collected by the temperature sensors of each winding to take further measures for the train. This can improve the accuracy of determining the early warning signal, reduce the risk of disrupting the normal operation of the train due to misjudgment, reduce the burden of emergency response on the driver and passengers, improve the timeliness of emergency response, and improve the safety of train operation while improving the order of train operation.

[0083] In a specific embodiment, the fourth control command is used to instruct the traction control unit to control the power switching device of the traction converter corresponding to the second faulty traction motor to perform a three-phase short circuit action, so as to achieve coordinated control with the braking control unit to stop the train from running.

[0084] After the fourth control command is triggered, the traction converter can short-circuit the power switching components and work with the brake control unit to stop the train from running.

[0085] According to embodiments of this disclosure, the method, while reducing the traction force of the traction motor in a train malfunction, takes further measures to address the train based on the number of times a second warning signal is continuously received. This ensures the order of train operation, reduces the risk of further escalation of the malfunction and the possibility of fire, and improves the safety of train operation.

[0086] In a specific embodiment, a fifth control command can be generated in response to receiving a third warning signal indicating a third fault, namely a short circuit fault in the traction motor.

[0087] In a specific embodiment, a fifth control command can be sent to the traction control unit so that the traction control unit can adjust the traction force of each of the at least one third faulty traction motors to the third target traction force according to the fifth control command.

[0088] The fifth control command is generated based on the third warning signal. The third warning signal indicates that there is a third faulty traction motor among the train's traction motors. During the fault detection period, the third faulty traction motor can be the traction motor with the target bearing present.

[0089] The target bearing can be a bearing whose temperature change parameter is greater than or equal to a fourth temperature threshold. The bearing's temperature change parameter can be the bearing's temperature change value or the rate of temperature change over a predetermined time period. The fourth temperature threshold can be the same as or different from the third temperature threshold; for example, the fourth temperature threshold can be set to 9 °C / s, or the fourth temperature threshold at different locations on the traction motor's bearing can be the same or different. The bearing's temperature change parameter can be collected by bearing sensors installed on the traction motor. The bearing sensors can include at least one of a drive-end bearing sensor and a non-drive-end bearing sensor.

[0090] A fifth control command is sent to the traction control unit, so that the traction control unit adjusts the traction force of each of the third faulty traction motors to a third target traction force according to the fifth control command. The third target traction force may be less than the traction force of the third faulty traction motor before the fault. The third target traction force may also be less than the first target traction force, and may be the same as or different from the second target traction force.

[0091] For example, during train operation, when the temperature change parameter of the bearing in the traction motor is greater than or equal to 9°C / s, the train control unit generates a third warning signal indicating that the traction motor is the third faulty traction motor. Based on the third warning signal, the train control unit generates a fifth control command, causing the traction force of the third faulty traction motor to be reduced to a third target traction force.

[0092] According to embodiments of this disclosure, while collecting temperature change parameters of the traction motor windings, the temperature change parameters of the traction motor bearings are also used as detection objects. This can further determine the accuracy of the warning signal, reduce the risk of disrupting the normal operation of the train due to misjudgment, and improve the safety of train operation.

[0093] In a specific embodiment, when the traction force of the third faulty traction motor is adjusted to the third target traction force according to the sixth control command, the train control unit can generate the sixth control command if the number of third warning signals received within the fault detection cycle is greater than or equal to the third number threshold.

[0094] In a specific embodiment, a sixth control command can be sent to the traction control unit and the braking control unit so that the traction control unit and the braking control unit can control the train to run at the third speed limit or stop running according to the sixth control command.

[0095] While reducing the traction force of the third faulty traction motor to the third target traction force, the temperature change parameters of the train traction motor bearings continue to be collected. When the number of times the train control unit receives the third warning signal is greater than or equal to the third threshold, a sixth control command is generated. The third threshold can be the same as or different from the second threshold, and can be set according to actual needs; for example, it can be two times.

[0096] The sixth control command instructs the train to operate at or suspend operation at the third restricted speed after reducing the traction force of the third faulty traction motor. The third restricted speed can be lower than the train's normal operating speed. For example, the third restricted speed could be 40 km / h.

[0097] For example, when the traction force of the third faulty traction motor is reduced to the third target traction force, if the difference in the temperature change parameter of the traction motor bearing is greater than or equal to 9 ℃ / s, the train control unit will still receive the third warning signal. If the number of warning signals received is greater than or equal to 2, the train will be controlled to run at the third limit speed or be suspended. The train running at the third limit speed or being suspended can be set by the driver and conductor according to the actual situation, and this disclosure does not make specific limitations.

[0098] According to embodiments of this disclosure, after reducing the traction force of the third faulty traction motor to the third target traction force, in order to further determine the short circuit fault of the traction motor, the acquisition system will continue to collect temperature change parameters collected by the bearing sensor to take further measures for the train. This can improve the accuracy of determining the warning signal, reduce the risk of disrupting the normal operation of the train due to misjudgment, reduce the burden of emergency response on the driver and passengers, improve the timeliness of emergency response, and improve the safety of train operation while improving the order of train operation.

[0099] In a specific embodiment, the sixth control command can be used to instruct the traction control unit to control the power switching devices of the traction converter corresponding to the third faulty traction motor to perform a three-phase short circuit action, so as to achieve coordinated control with the braking control unit to stop the train from running.

[0100] After the sixth control command is triggered, the traction converter can short-circuit the power switching components and work with the brake control unit to stop the train from running.

[0101] According to embodiments of this disclosure, this method, while reducing the traction force of the traction motor in a train malfunction, takes further measures to address the train based on the number of times a third warning signal is continuously received. This ensures the order of train operation, reduces the risk of further escalation of the malfunction and the possibility of fire, and improves the safety of train operation.

[0102] Referring again to Figures 1 and 2, this disclosure also provides a train that may include a train control unit and a traction control unit.

[0103] The train control unit can be configured to generate a first control command in response to receiving a first warning signal indicating a short-circuit fault in at least one first traction motor. The first warning signal may be generated in response to detecting the presence of at least one first traction motor with the first fault. The first traction motor with the first fault may be a traction motor with two first target windings or two second target windings during the fault detection cycle. The two first target windings are two windings in the same traction motor whose temperature change parameters differ from a first temperature threshold. The two second target windings are windings in their respective traction motors whose temperature change parameters differ from a second temperature threshold. The two second target windings belong to different traction motors.

[0104] The traction control unit can be configured to adjust the traction force of at least one first-faulted traction motor to a first target traction force according to a first control command. The first target traction force can be less than the traction force of the first-faulted traction motor before the fault.

[0105] Based on the above-described train operation control method, this disclosure also provides a train operation control device. The device will be described in detail below with reference to Figure 3.

[0106] Figure 3 schematically shows a structural block diagram of a train operation control device according to an embodiment of the present disclosure.

[0107] As shown in Figure 3, the train operation control device 300 may include a generation module 310 and a sending module 320.

[0108] The generation module 310 is configured to generate a first control command in response to receiving a first warning signal indicating a short-circuit fault in at least one first faulty traction motor. The first warning signal is generated in response to detecting the presence of at least one first faulty traction motor. The first faulty traction motor is either a traction motor with two first target windings or two second target windings during the fault detection cycle. The two first target windings are two windings in the same traction motor whose temperature change parameters differ from or equal to a first temperature threshold. The two second target windings are windings in their respective traction motors whose temperature change parameters differ from or equal to a second temperature threshold. The two second target windings belong to different traction motors. In one embodiment, the generation module 310 may be used to execute the operation S210 described above, which will not be repeated here.

[0109] The sending module 320 is used to send a first control command to the traction control unit, so that the traction control unit adjusts the traction force of each of the at least one first faulty traction motors to a first target traction force according to the first control command, wherein the first target traction force is less than the traction force of the first faulty traction motor before the fault. In one embodiment, the sending module 320 can be used to perform the operation S220 described above, which will not be repeated here.

[0110] When the traction force of at least one first faulty traction motor is adjusted to the first target traction force according to the first control command, the sending module 320 further includes a first generation submodule and a first sending submodule.

[0111] The first generation submodule is used to generate a second control command in response to the number of times the first warning signal received during the fault detection cycle is greater than or equal to the first number threshold.

[0112] The first transmitting submodule is used to send a second control command to the traction control unit and the braking control unit, so that the traction control unit and the braking control unit can control the train to run or stop running at a first limited speed according to the second control command, wherein the first limited speed is less than the normal operating speed of the train.

[0113] The train operation control device 300 may also include a second generation module and a second sending module.

[0114] The second generation module is used to generate a third control command in response to receiving a second warning signal indicating a short circuit fault in the second faulty traction motor. The second warning signal is generated in response to the detection of the existence of a second faulty traction motor. The second faulty traction motor is a traction motor that has at least one third target winding during the fault detection period. The third target winding is a winding whose temperature change parameter is greater than or equal to a third temperature threshold.

[0115] The second sending module is used to send a third control command to the traction control unit so that the traction control unit adjusts the traction force of at least one second faulty traction motor to a second target traction force according to the third control command, wherein the second target traction force is less than the traction force of the second faulty traction motor before the fault.

[0116] When adjusting the traction force of at least one second faulty traction motor to the second target traction force according to the third control command, the second sending module may further include a second generating submodule and a second sending submodule.

[0117] The second generation submodule is used to generate a fourth control command in response to the number of times the second warning signal received during the fault detection cycle is greater than or equal to the second threshold.

[0118] The second transmitting submodule is used to send a fourth control command to the traction control unit and the braking control unit, so that the traction control unit and the braking control unit can control the train to run or stop running at a second limited speed according to the fourth control command, wherein the second limited speed is less than the normal operating speed of the train.

[0119] The train operation control device 300 may also include a third generation module and a third sending module.

[0120] The third generation module is used to generate a fifth control command in response to receiving a third warning signal indicating a short circuit fault in the third traction motor. The third warning signal is generated in response to the detection of a third faulty traction motor. The third faulty traction motor is a traction motor that has at least one target bearing in the fault detection cycle. The bearing is a bearing whose temperature change parameter is greater than or equal to a fourth temperature threshold.

[0121] The third sending module is used to send a fifth control command to the traction control unit so that the traction control unit can adjust the traction force of at least one third faulty traction motor to a third target traction force according to the fifth control command, wherein the third target traction force is less than the traction force of the third faulty traction motor before the fault.

[0122] In the case where the traction force of at least one third faulty traction motor is adjusted to the third target traction force according to the sixth control command, the third sending module may further include a third generating submodule and a third sending submodule.

[0123] The third generation submodule is used to generate a sixth control command in response to the number of times the third warning signal received during the fault detection cycle is greater than or equal to the third number threshold.

[0124] The third transmitting submodule is used to send a sixth control command to the traction control unit and the braking control unit, so that the traction control unit and the braking control unit can control the train to run or stop running at a third limited speed according to the sixth control command, wherein the third limited speed is less than the normal operating speed of the train.

[0125] According to embodiments of this application, any plurality of modules in the generation module 310 and the transmission module 320 can be combined into one module, or any one of these modules can be split into multiple modules. Alternatively, at least a portion of the functionality of one or more of these modules can be combined with at least a portion of the functionality of other modules and implemented in one module. According to embodiments of this application, at least one of the generation module 310 and the transmission module 320 can be at least partially implemented as hardware circuitry, such as a field-programmable gate array (FPGA), a programmable logic array (PLA), a system-on-a-chip, a system-on-a-substrate, a system-on-package, an application-specific integrated circuit (ASIC), or any other reasonable means of integrating or packaging circuitry, or implemented in software, hardware, or firmware, or in any appropriate combination of any of these three implementation methods. Alternatively, at least one of the generation module 310 and the transmission module 320 can be at least partially implemented as a computer program module, which, when run, can perform corresponding functions.

[0126] Figure 4 schematically illustrates a block diagram of an electronic device suitable for implementing a train operation control method according to an embodiment of the present disclosure. The electronic device shown in Figure 4 is merely an example and should not be construed as limiting the functionality and scope of the embodiments of the present disclosure.

[0127] As shown in FIG. 4, an electronic device 400 according to an embodiment of the present disclosure includes a processor 401, which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 402 or a program loaded from a storage portion 408 into a random access memory (RAM) 403. The processor 401 may include, for example, a general-purpose microprocessor (e.g., a CPU), an instruction set processor and / or an associated chipset and / or a special-purpose microprocessor (e.g., an application-specific integrated circuit (ASIC)). The processor 401 may also include onboard memory for caching purposes. The processor 401 may 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.

[0128] RAM 403 stores various programs and data required for the operation of electronic device 400. Processor 401, ROM 402, and RAM 403 are interconnected via bus 404. Processor 401 performs various operations of the method flow according to embodiments of the present disclosure by executing programs in ROM 402 and / or RAM 403. It should be noted that the programs may also be stored in one or more memories other than ROM 402 and RAM 403. Processor 401 may also perform various operations of the method flow according to embodiments of the present disclosure by executing programs stored in said one or more memories.

[0129] According to embodiments of this disclosure, the electronic device 400 may further include an input / output (I / O) interface 405, which is also connected to a bus 404. The electronic device 400 may also include one or more of the following components connected to the input / output (I / O) interface 405: an input section 406 including a keyboard, mouse, etc.; an output section 407 including a cathode ray tube (CRT), liquid crystal display (LCD), etc., and a speaker, etc.; a storage section 408 including a hard disk, etc.; and a communication section 409 including a network interface card such as a LAN card, modem, etc. The communication section 409 performs communication processing via a network such as the Internet. A drive 410 is also connected to the input / output (I / O) interface 405 as needed. A removable medium 411, such as a disk, optical disk, magneto-optical disk, semiconductor memory, etc., is installed on the drive 410 as needed so that computer programs read from it can be installed into the storage section 408 as needed.

[0130] According to embodiments of this disclosure, the method flow according to embodiments of this disclosure can be implemented as a computer software program. For example, embodiments of this disclosure include a computer program product comprising a computer program carried on a computer-readable storage medium, the computer program containing program code for performing the methods shown in the flowchart. In such embodiments, the computer program can be downloaded and installed from a network via communication section 409, and / or installed from removable medium 411. When the computer program is executed by processor 401, it performs the functions defined in the system of embodiments of this disclosure. According to embodiments of this disclosure, the systems, devices, apparatuses, modules, units, etc., described above can be implemented by computer program modules.

[0131] This disclosure also provides a computer-readable storage medium, which may be included in the device / apparatus / system described in the above embodiments; or it may exist independently and not assembled into the device / apparatus / system. The computer-readable storage medium carries one or more programs that, when executed, implement the method according to the embodiments of this disclosure.

[0132] According to embodiments of this disclosure, the computer-readable storage medium can be a non-volatile computer-readable storage medium. Examples include, but are 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 thereof. In this disclosure, the computer-readable storage medium can be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, apparatus, or device.

[0133] For example, according to embodiments of this disclosure, a computer-readable storage medium may include the ROM 402 and / or RAM 403 described above and / or one or more memories other than ROM 402 and RAM 403.

[0134] Embodiments of this disclosure also include a computer program product comprising a computer program containing program code for performing the methods provided in the embodiments of this disclosure. When the computer program product is run on an electronic device, the program code is used to enable the electronic device to implement the train operation control method provided in the embodiments of this disclosure.

[0135] When the computer program is executed by the processor 401, it performs the functions defined in the system / apparatus of this disclosure embodiments. According to embodiments of this disclosure, the systems, apparatuses, modules, units, etc., described above can be implemented by computer program modules.

[0136] In one embodiment, the computer program may rely on a tangible storage medium such as an optical storage device or a magnetic storage device. In another embodiment, the computer program may also be transmitted and distributed in the form of signals over a network medium, and may be downloaded and installed via the communication section 409, and / or installed from the removable medium 411. The program code contained in the computer program can be transmitted using any suitable network medium, including but not limited to: wireless, wired, etc., or any suitable combination thereof.

[0137] According to embodiments of this disclosure, program code for executing the computer programs provided in embodiments of this disclosure can be written in any combination of one or more programming languages. Specifically, these computational 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, languages ​​such as Java, C++, Python, "C", or similar programming languages. The program code can execute entirely on a user's computing device, partially on a user's device, partially on a remote computing device, or entirely on a remote computing device or server. In cases involving remote computing devices, the remote computing device can be connected to the user's computing device via any type of network, including a local area network (LAN) or a wide area network (WAN), or it can be connected to an external computing device (e.g., via the Internet using an Internet service provider).

[0138] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of the present disclosure. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram or flowchart, and combinations of blocks in a block diagram or flowchart, may be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions. Those skilled in the art will 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 are not explicitly described in the present disclosure. In particular, the features described in the various embodiments of this disclosure may be combined and / or combined in various ways without departing from the spirit and teachings of this disclosure. All such combinations and / or combinations fall within the scope of this disclosure.

[0139] The embodiments of this disclosure have been described above. However, these embodiments are for illustrative purposes only and are not intended to limit the scope of this disclosure. Although various embodiments have been described above, this does not mean that the measures in the various embodiments cannot be used advantageously in combination. Various substitutions and modifications can be made by those skilled in the art without departing from the scope of this disclosure, and all such substitutions and modifications should fall within the scope of this disclosure.

Claims

1. A train operation control method, comprising: In response to receiving a first warning signal indicating a short circuit fault in at least one first faulty traction motor, a first control command is generated, wherein the first warning signal is generated in response to detecting the presence of at least one first faulty traction motor, the first faulty traction motor being either a traction motor with two first target windings or two second target windings during the fault detection cycle, the two first target windings being two windings in the same traction motor whose temperature change parameter difference is greater than or equal to a first temperature threshold, and the two second target windings being windings in their respective traction motors whose temperature change parameter difference is greater than or equal to a second temperature threshold, and the two second target windings belonging to different traction motors; and the first control command is sent to a traction control unit so that the traction control unit adjusts the traction force of each of the at least one first faulty traction motors to a first target traction force according to the first control command, wherein the first target traction force is less than the traction force of the first faulty traction motor before the fault.

2. The method according to claim 1, wherein, When the traction force of each of the at least one first faulty traction motors is adjusted to a first target traction force according to the first control command, the method further includes: generating a second control command in response to the number of first warning signals received in the fault detection cycle being greater than or equal to a first threshold number; and sending the second control command to the traction control unit and the braking control unit so that the traction control unit and the braking control unit control the train to run or suspend operation at a first limited speed according to the second control command, wherein the first limited speed is less than the normal operating speed of the train.

3. The method according to claim 2, wherein, The second control command is used to instruct the traction control unit to control the power switching device of the traction converter corresponding to at least one of the first faulty traction motors to perform a three-phase short circuit operation, so as to achieve coordinated control with the braking control unit to stop the train.

4. The method according to any one of claims 1 to 3, wherein, The method further includes: generating a third control command in response to receiving a second warning signal indicating a short circuit fault in a second faulty traction motor, wherein the second warning signal is generated in response to detecting the presence of a second faulty traction motor, the second faulty traction motor being a traction motor having at least one third target winding during the fault detection period, the third target winding being a winding with a temperature change parameter greater than or equal to a third temperature threshold; and sending the third control command to the traction control unit so that the traction control unit adjusts the traction force of each of the at least one second faulty traction motors to a second target traction force according to the third control command, wherein the second target traction force is less than the traction force of the second faulty traction motor before the fault.

5. The method according to claim 4, wherein, When the traction force of each of the at least one second faulty traction motors is adjusted to a second target traction force according to the third control command, the method further includes: generating a fourth control command in response to the number of second warning signals received in the fault detection cycle being greater than or equal to a second threshold number; and sending the fourth control command to the traction control unit and the braking control unit so that the traction control unit and the braking control unit control the train to run or stop running at a second limited speed according to the fourth control command, wherein the second limited speed is less than the normal operating speed of the train.

6. The method according to claim 5, wherein, The fourth control command is used to instruct the traction control unit to control the power switching device of the traction converter corresponding to the second faulty traction motor to perform a three-phase short circuit operation, so as to achieve coordinated control with the braking control unit to stop the train from running.

7. The method according to claim 1, wherein, The method further includes: generating a fifth control command in response to receiving a third warning signal indicating a short circuit fault in a third faulty traction motor, wherein the third warning signal is generated in response to detecting the presence of the third faulty traction motor, the third faulty traction motor being a traction motor having at least one target bearing present during the fault detection cycle, the bearing being a bearing with a temperature change parameter greater than or equal to a fourth temperature threshold; and sending the fifth control command to the traction control unit so that the traction control unit adjusts the traction force of each of the at least one third faulty traction motor to a third target traction force according to the fifth control command, wherein the third target traction force is less than the traction force of the third faulty traction motor before the fault.

8. The method according to claim 7, wherein, When the traction force of each of the at least one third faulty traction motors is adjusted to a third target traction force according to the fifth control command, the method further includes: generating a sixth control command in response to the number of third warning signals received in the fault detection cycle being greater than or equal to a third threshold; and sending the sixth control command to the traction control unit and the braking control unit so that the traction control unit and the braking control unit control the train to run or suspend operation at a third limited speed according to the sixth control command, wherein the third limited speed is less than the normal operating speed of the train.

9. The method according to claim 8, wherein, The sixth control command is used to instruct the traction control unit to control the power switching device of the traction converter corresponding to the third faulty traction motor to perform a three-phase short circuit, so as to achieve coordinated control with the braking control unit to stop the train.

10. An electronic device, comprising: One or more processors; A memory for storing one or more programs, wherein when the one or more programs are executed by the one or more processors, the one or more processors cause the one or more processors to implement the method of any one of claims 1 to 9.

11. A computer-readable storage medium having stored thereon executable instructions that, when executed by a processor, cause the processor to perform the method of any one of claims 1 to 9.

12. A computer program product comprising a computer program that, when executed by a processor, implements the method according to any one of claims 1 to 9.

13. A train, comprising: A train control unit is configured to generate a first control command in response to receiving a first warning signal indicating a short-circuit fault in at least one first faulty traction motor, wherein the first warning signal is generated in response to detecting the presence of at least one first faulty traction motor, the first faulty traction motor being either a traction motor with two first target windings or two second target windings during a fault detection cycle, the two first target windings being two windings in the same traction motor whose temperature change parameters differ from a first temperature threshold, and the two second target windings being windings in their respective traction motors whose temperature change parameters differ from a second temperature threshold, and the two second target windings belonging to different traction motors; and a traction control unit is configured to adjust the traction force of each of the at least one first faulty traction motors to a first target traction force according to the first control command, wherein the first target traction force is less than the traction force of the first faulty traction motor before the fault.

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