A method, device, equipment and medium for judging inter-turn short circuit of traction motor

Abstract

The present application discloses a method, device, equipment and medium for judging inter-turn short circuit of a traction motor. The method includes: receiving three-phase current values and motor speed values of a target traction motor, judging whether the preset conditions are met according to the three-phase current values and the motor speed values, and if the preset conditions are not met, determining that an inter-turn short circuit occurs in the target traction motor. Among them, by judging whether an inter-turn short circuit occurs through the three-phase current values and the motor speed values, since the accuracy of judging the inter-turn short circuit only by the current values is low, the motor speed values are judged simultaneously, and according to the relationship between the three-phase current values and the motor speed values, it is comprehensively judged whether an inter-turn short circuit occurs, which improves the accuracy of judging the inter-turn short circuit. At the same time, it is possible to judge whether there is a trend of inter-turn short circuit by real-time monitoring of the three-phase current values and the motor speed values, reducing the hysteresis of judging the inter-turn short circuit.

Description

Technical Field

[0001] This application relates to the technical field of inter-turn short circuit judgment, and particularly to a method, device, equipment and medium for judging the inter-turn circuit of a traction motor. Background Art

[0002] With the development of science and technology, permanent magnet traction motors have become the traction power of high-speed trains. Taking the traction motors of high-speed trains as an example, high-speed trains have multiple carriages, so there are multiple traction motors as power sources. However, due to the high operating speed of high-speed trains, it is necessary to ensure the normal operation of each traction motor. Therefore, it is necessary to inspect and maintain the inter-turn of the traction motors.

[0003] In the prior art, the possible fault in the inter-turn of a traction motor is an inter-turn short circuit. Therefore, in the prior art, it is generally judged whether there is a short circuit in the inter-turn by judging whether the current value is abnormal. However, since the factors affecting the current abnormality are not only the inter-turn short circuit, it may cause misjudgment, resulting in low accuracy of inter-turn short circuit judgment. At the same time, since the inter-turn short circuit can only be judged by the abnormal current value, that is, the inter-turn short circuit can only be judged by the current value after the fault occurs, there is a certain lag in the method provided by the prior art.

[0004] Based on this, how to improve the accuracy of inter-turn short circuit judgment and how to reduce the lag of inter-turn short circuit judgment are technical problems that need to be solved urgently by those skilled in the art. Summary of the Invention

[0005] Based on the above problems, this application provides a method, device, equipment and medium for judging the inter-turn short circuit of a traction motor to improve the accuracy of inter-turn short circuit judgment and reduce the lag of inter-turn short circuit judgment.

[0006] The embodiments of this application disclose the following technical solutions:

[0007] In a first aspect, an embodiment of this application provides a method for judging the inter-turn short circuit of a traction motor, and the method includes:

[0008] Receiving the three-phase current value and the motor speed value of the target traction motor;

[0009] Judging whether it meets the preset conditions according to the three-phase current value and the motor speed value;

[0010] If it does not meet the preset conditions, it is determined that the target traction motor has an inter-turn short circuit.

[0011] Optionally, the judging whether it meets the preset conditions according to the three-phase current value and the motor speed value includes:

[0012] Determine whether the amplitude difference between the three-phase current values exceeds a preset range;

[0013] If it exceeds the preset range, output that it does not meet the preset conditions;

[0014] If it does not exceed the preset range, determine the ratio between the motor speed value and the three-phase current values;

[0015] Determine whether the ratio exceeds a preset ratio;

[0016] If it exceeds the preset ratio, output that it does not meet the preset conditions;

[0017] If it does not exceed the preset ratio, output that it meets the preset conditions.

[0018] Optionally, the method further includes:

[0019] If it meets the preset conditions, receive the stator temperature and vibration values of the target traction motor;

[0020] Judge whether there is a tendency of inter-turn short circuit in the target traction motor according to the stator temperature and vibration values;

[0021] If there is a tendency of inter-turn short circuit, send an inter-turn short circuit tendency message.

[0022] Optionally, the method further includes:

[0023] If there is no tendency of inter-turn short circuit, continue to receive the new three-phase current values and motor speed values sent by the target traction motor to judge the inter-turn short circuit of the target traction motor.

[0024] Optionally, the method further includes:

[0025] If there is no tendency of inter-turn short circuit, continue to receive the new stator temperature and vibration values sent by the target traction motor to judge the tendency of inter-turn short circuit of the target traction motor.

[0026] In a second aspect, an embodiment of the present application provides a device for judging inter-turn short circuit of a traction motor, and the device includes: a first receiving module, a first judging module and an inter-turn short circuit determining module;

[0027] The first receiving module is used to receive the three-phase current values and the motor speed value of the target traction motor;

[0028] The first judging module is used to judge whether it meets the preset conditions according to the three-phase current values and the motor speed value;

[0029] The inter-turn short circuit determining module is used to determine that the target traction motor has an inter-turn short circuit if it does not meet the preset conditions.

[0030] Optionally, the first judgment module includes:

[0031] A first sub - judgment module, configured to judge whether the amplitude difference between the three - phase current values exceeds a preset range;

[0032] A first result output module, configured to output that it does not meet the preset conditions if it exceeds the preset range;

[0033] A ratio determination module, configured to determine the ratio between the motor speed value and the three - phase current value if it does not exceed the preset range;

[0034] A second sub - judgment module, configured to judge whether the ratio exceeds a preset ratio;

[0035] A second result output module, configured to output that it does not meet the preset conditions if it exceeds the preset ratio;

[0036] A third result output module, configured to output that it meets the preset conditions if it does not exceed the preset ratio.

[0037] Optionally, it is characterized in that the device further includes:

[0038] A second receiving module, configured to receive the stator temperature and vibration values of the target traction motor if it meets the preset conditions;

[0039] A second judgment module, configured to judge whether there is a tendency of inter - turn short - circuit in the target traction motor according to the stator temperature and vibration values;

[0040] An inter - turn short - circuit tendency determination module, configured to send an inter - turn short - circuit tendency message if there is a tendency of inter - turn short - circuit.

[0041] In a third aspect, an embodiment of the present application provides a computer device, including: a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the computer program, the method for judging the inter - turn short - circuit of the traction motor as described in the first aspect is implemented.

[0042] In a fourth aspect, an embodiment of the present application provides a computer - readable storage medium. Instructions are stored in the computer - readable storage medium. When the instructions run on a terminal device, the terminal device is enabled to execute the method for judging the inter - turn short - circuit of the traction motor as described in the first aspect.

[0043] Compared with the prior art, the present application has the following beneficial effects: By receiving the three-phase current value and the motor speed value of the target traction motor, it is determined whether the preset conditions are met according to the three-phase current value and the motor speed value. If the preset conditions are not met, it is determined that the target traction motor has a turn-to-turn short circuit. Among them, by judging whether there is a turn-to-turn short circuit through the three-phase current value and the motor speed value, since the accuracy of judging the turn-to-turn short circuit only by the current value is low, the motor speed value is judged at the same time, and according to the relationship between the three-phase current value and the motor speed value, it is comprehensively judged whether there is a turn-to-turn short circuit, which improves the accuracy of judging the turn-to-turn short circuit. At the same time, it is possible to judge whether there is a tendency of turn-to-turn short circuit by real-time monitoring of the three-phase current value and the motor speed value, reducing the lag of the turn-to-turn short circuit judgment. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to these drawings.

[0045] Figure 1 It is a flowchart of a method for judging turn-to-turn short circuit of a traction motor provided by an embodiment of the present application;

[0046] Figure 2 It is a flowchart of a method for judging the tendency of turn-to-turn short circuit provided by an embodiment of the present application;

[0047] Figure 3 It is a schematic structural diagram of a device for judging turn-to-turn short circuit of a traction motor provided by an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0048] As described above, in the research on turn-to-turn short circuit, it is found that in the prior art, the possible fault in the turn-to-turn of the traction motor is turn-to-turn short circuit. Therefore, in the prior art, it is generally judged whether the current value is abnormal, so as to infer whether there is a short circuit between turns. However, since the factors affecting the current abnormality are not only turn-to-turn short circuit, it may cause misjudgment, resulting in low accuracy of turn-to-turn short circuit judgment. At the same time, since the turn-to-turn short circuit can only be judged by the abnormal current value, that is, the turn-to-turn short circuit can only be judged by the current value after the fault occurs. Therefore, the method provided by the prior art has a certain lag.

[0049] To solve the above problems, an embodiment of the present application provides a method, apparatus, device, and medium for judging inter-turn short circuit of a traction motor. The method includes: receiving three-phase current values and motor speed values of a target traction motor, judging whether preset conditions are met according to the three-phase current values and the motor speed values, and if the preset conditions are not met, determining that an inter-turn short circuit occurs in the target traction motor.

[0050] In this way, it is judged whether an inter-turn short circuit occurs through the three-phase current values and the motor speed values. Since the accuracy of judging the inter-turn short circuit only by the current value is low, the motor speed value is judged at the same time, and according to the relationship between the three-phase current values and the motor speed values, it is comprehensively judged whether an inter-turn short circuit occurs, which improves the accuracy of judging the inter-turn short circuit. At the same time, it is possible to judge whether there is a trend of inter-turn short circuit by real-time monitoring of the three-phase current values and the motor speed values, reducing the hysteresis of judging the inter-turn short circuit.

[0051] To enable those skilled in the art to better understand the solution of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0052] See Figure 1 This figure is a flowchart of a method for judging inter-turn short circuit of a traction motor provided by an embodiment of the present application. In conjunction with Figure 1 as shown, a method for judging inter-turn short circuit of a traction motor provided by an embodiment of the present application may include:

[0053] S101: Receive three-phase current values and motor speed values of a target traction motor.

[0054] Three-phase current means a current in which three components have a phase difference of one-third of a cycle or 120° phase angle in turn through three wires, with each wire serving as a loop for the other two.

[0055] The motor speed value means the speed value of the target monitored traction motor.

[0056] Among them, in the prior art, the current value of the traction motor is generally judged, but this single judgment is not accurate. Due to the long-term operation of the traction motor, the temperature of the traction motor may be relatively high, which may further affect the change of the current. Therefore, judging only by the current value will have the problem of inaccurate judgment results.

[0057] In the embodiments of the present application, the judgment of the motor speed value is added. By judging the motor speed value, the current change caused by high temperature is excluded, and the accurate judgment of the inter-turn short circuit is further realized.

[0058] S102: Judge whether the preset conditions are met according to the three-phase current value and the motor speed value.

[0059] By combining the judgment of the three-phase current value and the motor speed value, the accuracy of the inter-turn short circuit judgment can be improved.

[0060] As an implementable embodiment, step S102 may specifically include:

[0061] Step 1: Judge whether the amplitude difference between the three-phase current values exceeds the preset range;

[0062] Step 2: If it exceeds the preset range, output that it does not meet the preset conditions;

[0063] Step 3: If it does not exceed the preset range, determine the ratio between the motor speed value and the three-phase current value;

[0064] Step 4: Judge whether the ratio exceeds the preset ratio;

[0065] Step 5: If it exceeds the preset ratio, output that it does not meet the preset conditions;

[0066] Step 6: If it does not exceed the preset ratio, output that it meets the preset conditions.

[0067] Among them, in steps 1-6, by first judging the three-phase current value to determine whether it exceeds the preset range, the fault of inter-turn short circuit is determined. As an example, it can be specifically judged whether the three-phase current is balanced. If the unbalanced current is greater than 10%, it is considered that an inter-turn short circuit has occurred. The specific range value can be determined according to the actual situation and is not specifically limited here.

[0068] Among them, after judging the three-phase current, if it is found that the three-phase current value does not exceed the preset range, but the value is abnormal, further judgment can be made to determine the ratio between the three-phase current value and the motor speed value. If the ratio exceeds the preset ratio, it is considered that there is an inter-turn short circuit.

[0069] As an optional implementation, the three-phase current value and the motor speed value can be received in real time, and the ratio between the three-phase current value and the motor speed value can be monitored in real time. If the ratio between the two is getting larger and larger, it is judged that there is a tendency of inter-turn short circuit, and a message about the tendency of inter-turn short circuit can be sent to the maintenance personnel.

[0070] S103: If the preset conditions are not met, it is determined that there is an inter-turn short circuit in the target traction motor.

[0071] The method for judging the inter-turn short circuit of the traction motor provided by the embodiment of the present application receives the three-phase current value and the motor speed value of the target traction motor, and judges whether the preset conditions are met according to the three-phase current value and the motor speed value. If the preset conditions are not met, it is determined that there is an inter-turn short circuit in the target traction motor. Among them, judging whether there is an inter-turn short circuit through the three-phase current value and the motor speed value. Since the accuracy of judging the inter-turn short circuit only through the current value is low, the motor speed value is judged at the same time, and according to the relationship between the three-phase current value and the motor speed value, it is comprehensively judged whether there is an inter-turn short circuit, which improves the accuracy of judging the inter-turn short circuit. At the same time, it is possible to judge whether there is a tendency of inter-turn short circuit by real-time monitoring of the three-phase current value and the motor speed value, reducing the hysteresis of judging the inter-turn short circuit.

[0072] Based on the method for judging the inter-turn short circuit of the traction motor provided by the above embodiment, in order to further improve the accuracy of judging the inter-turn short circuit, and further realize the judgment of the tendency of the inter-turn short circuit, and at the same time screen out the faulty motor, on the basis of the above embodiment, the embodiment of the present application also provides a method for judging the tendency of the inter-turn short circuit of the traction motor. See Figure 2 , which is a flowchart of a method for judging the tendency of an inter-turn short circuit provided by the embodiment of the present application. Combining Figure 2 as shown, the method may include:

[0073] S201: If the preset conditions are met, receive the stator temperature and vibration value of the target traction motor.

[0074] The stator of the target traction motor refers to the stationary part of the motor. Among them, the stator can be composed of three parts: the stator core, the stator winding and the frame.

[0075] The stator temperature refers to the temperature of the stator corresponding to the target traction motor.

[0076] The vibration value refers to the vibration speed or vibration frequency of the target traction motor during steady-state operation.

[0077] Among them, in the actual scenario, since there are generally multiple traction motors, the short circuit that occurs between two adjacent traction motors is called an inter-turn short circuit. Therefore, in order to judge whether there is a tendency of inter-turn short circuit before the inter-turn short circuit occurs, it is possible to judge whether the traction motor is faulty, and then further judge whether there is a tendency of inter-turn short circuit, so that the motor corresponding to the possible inter-turn short circuit problem can be overhauled in advance, avoiding the hysteresis of judging the inter-turn short circuit, and it is possible to judge in advance whether an inter-turn short circuit may occur.

[0078] S202: Determine whether there is a tendency of inter-turn short circuit in the target traction motor based on the stator temperature and vibration value.

[0079] Among them, in the actual scenario, since there is more than one traction motor, and there will be a certain connection between adjacent traction motors, and the models and specifications of a group of motors are generally the same.

[0080] Therefore, as an implementable embodiment, the stator temperatures and vibration values of all traction motors in the same group at the same moment can be obtained, and then the stator temperatures of all traction motors are compared to select the traction motors with abnormal stator temperatures. For the traction motors with abnormal stator temperatures, their corresponding vibration values are simultaneously compared with the standard vibration value range. If it exceeds the preset range, it is considered that there is a tendency of inter-turn short circuit.

[0081] Therefore, as another implementable embodiment, the stator temperatures and vibration values of all traction motors in the same group at the same moment can be obtained, and then the vibration values of all traction motors are compared to select the traction motors with abnormal vibration values. For the traction motors with abnormal vibration values, their corresponding stator temperatures are simultaneously compared with the standard stator range. If it exceeds the preset range, it is considered that there is a tendency of inter-turn short circuit.

[0082] Among them, for the above two implementable embodiments, after determining the abnormal traction motor, continuous monitoring can be carried out to judge whether its stator temperature or vibration value gradually increases or gradually approaches the critical value of inter-turn short circuit, so as to realize the judgment of the tendency of inter-turn short circuit.

[0083] S203: If there is a tendency of inter-turn short circuit, send an inter-turn short circuit tendency message.

[0084] As an implementable embodiment, the method may further include:

[0085] If there is no tendency of inter-turn short circuit, continue to receive the new three-phase current value and motor speed value sent by the target traction motor to judge the inter-turn short circuit of the target traction motor.

[0086] As an optional embodiment, the method may further include:

[0087] If there is no tendency of inter-turn short circuit, continue to receive the new stator temperature and vibration value sent by the target traction motor to judge the tendency of inter-turn short circuit of the target traction motor.

[0088] In the embodiments of the present application, by receiving the stator temperature and vibration value, the inter-turn short circuit of the traction motor is further judged, and the trend of the inter-turn short circuit of the traction motor can be judged, improving the accuracy of the judgment of the inter-turn short circuit of the traction motor. At the same time, the judgment of the trend of the inter-turn short circuit of the traction motor can be realized, avoiding the lag of the judgment of the inter-turn short circuit.

[0089] Based on the method for judging the inter-turn short circuit of a traction motor provided in the above embodiments, the embodiments of the present application further provide a device for judging the inter-turn short circuit of a traction motor. Refer to Figure 3 , which is a schematic structural diagram of a device for judging the inter-turn short circuit of a traction motor provided in the embodiments of the present application. In combination with Figure 3 as shown, the device 300 may include: a first receiving module 301, a first judging module 302, and an inter-turn short circuit determining module 303;

[0090] The first receiving module 301 is configured to receive the three-phase current value and the motor speed value of the target traction motor;

[0091] The first judging module 302 is configured to judge whether the preset conditions are met according to the three-phase current value and the motor speed value;

[0092] The inter-turn short circuit determining module 303 is configured to determine that the target traction motor has an inter-turn short circuit if the preset conditions are not met.

[0093] As an example, the first judging module 302 includes:

[0094] A first sub-judging module, configured to judge whether the amplitude difference between the three-phase current values exceeds a preset range;

[0095] A first result output module, configured to output that the preset conditions are not met if the preset range is exceeded;

[0096] A ratio determining module, configured to determine the ratio between the motor speed value and the three-phase current value if the preset range is not exceeded;

[0097] A second sub-judging module, configured to judge whether the ratio exceeds a preset ratio;

[0098] A second result output module, configured to output that the preset conditions are not met if the preset ratio is exceeded;

[0099] A third result output module, configured to output that the preset conditions are met if the preset ratio is not exceeded.

[0100] As an example, the device 300 further includes:

[0101] A second receiving module, configured to receive the stator temperature and vibration value of the target traction motor if a preset condition is met;

[0102] A second judging module, configured to judge whether there is a tendency of inter-turn short circuit in the target traction motor according to the stator temperature and vibration value;

[0103] An inter-turn short circuit tendency determining module, configured to send an inter-turn short circuit tendency message if there is a tendency of inter-turn short circuit.

[0104] As an example, the apparatus 300 further includes:

[0105] A third judging module, configured to continue to receive new three-phase current values and motor speed values sent by the target traction motor to judge inter-turn short circuit of the target traction motor if there is no tendency of inter-turn short circuit.

[0106] As an example, the apparatus 300 further includes:

[0107] A real-time monitoring module, configured to continue to receive new stator temperature and vibration values sent by the target traction motor to judge the tendency of inter-turn short circuit of the target traction motor if there is no tendency of inter-turn short circuit.

[0108] The apparatus for judging inter-turn short circuit of a traction motor provided by an embodiment of the present application has the same beneficial effects as the method for judging inter-turn short circuit of a traction motor provided by the above embodiment, and thus will not be described in detail herein.

[0109] An embodiment of the present application further provides a corresponding device and a computer storage medium for implementing the solution provided by the embodiment of the present application.

[0110] Wherein, the device includes a memory and a processor, the memory is used to store instructions or codes, and the processor is used to execute the instructions or codes so that the device executes the method for judging inter-turn short circuit of a traction motor according to any embodiment of the present application.

[0111] Codes are stored in the computer storage medium, and when the codes are run, the device running the codes implements the method for judging inter-turn short circuit of a traction motor according to any embodiment of the present application.

[0112] It should be noted that the various embodiments in this specification are described in a progressive manner. For the parts that are the same or similar among the various embodiments, reference can be made to each other, and the key point of each embodiment is to illustrate the differences from other embodiments. In particular, for the device and equipment embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and reference can be made to the corresponding parts of the method embodiments for the relevant content. The device and equipment embodiments described above are only illustrative. The units described as separate components may or may not be physically separated, and the components referred to as units may or may not be physical units, that is, they may be located in one place or distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art can understand and implement it without creative efforts.

[0113] The "first", "second" (if any) in the names such as those mentioned in the embodiments of this application are only used as name identifiers and do not represent the first and second in sequence.

[0114] From the description of the above embodiments, those skilled in the art can clearly understand that all or part of the steps in the above method embodiments can be implemented by means of software plus a general hardware platform. Based on this understanding, the technical solution of this application can be embodied in the form of a software product, which can be stored in a storage medium, such as read-only memory (ROM) / RAM, magnetic disk, optical disk, etc., and includes several instructions to enable a computer device (which can be a personal computer, a server, or a network communication device such as a router) to execute the methods described in various embodiments or some parts of the embodiments of this application.

[0115] The above is only a specific implementation manner of this application, but the protection scope of this application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by this application should be covered by the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

1. A method for judging inter-turn short circuit of a traction motor, characterized in that, the method includes: Receiving the three-phase current values and the motor speed value of the target traction motor; Judging whether the preset conditions are met according to the three-phase current values and the motor speed value; If the preset conditions are not met, it is determined that the target traction motor has an inter-turn short circuit; Among them, the judging whether the preset conditions are met according to the three-phase current values and the motor speed value includes: Judging whether the amplitude difference between the three-phase current values exceeds a preset range; If it exceeds the preset range, it is output as not meeting the preset conditions; If it does not exceed the preset range, the ratio between the motor speed value and the three-phase current values is determined; Judging whether the ratio exceeds a preset ratio; If it exceeds the preset ratio, it is output as not meeting the preset conditions; If it does not exceed the preset ratio, it is output as meeting the preset conditions.

2. The method for judging inter-turn short circuit of a traction motor according to claim 1, characterized in that, the method further includes: If the preset conditions are met, receiving the stator temperature and vibration value of the target traction motor; Judging whether the target traction motor has a tendency of inter-turn short circuit according to the stator temperature and vibration value; If there is a tendency of inter-turn short circuit, sending an inter-turn short circuit tendency message.

3. The method for judging inter-turn short circuit of a traction motor according to claim 2, characterized in that, the method further includes: If there is no tendency of inter-turn short circuit, continue to receive the new three-phase current values and motor speed value sent by the target traction motor to judge the inter-turn short circuit of the target traction motor.

4. The method for judging inter-turn short circuit of a traction motor according to claim 2, characterized in that, the method further includes: If there is no tendency of inter-turn short circuit, continue to receive the new stator temperature and vibration value sent by the target traction motor to judge the tendency of inter-turn short circuit of the target traction motor.

5. A device for judging inter-turn short circuit of a traction motor, characterized in that, the device includes: a first receiving module, a first judging module and an inter-turn short circuit determining module; The first receiving module is used to receive the three-phase current values and the motor speed value of the target traction motor; The first judging module is used to judge whether the preset conditions are met according to the three-phase current values and the motor speed value; The inter-turn short circuit determining module is used to determine that the target traction motor has an inter-turn short circuit if the preset conditions are not met; Among them, the first judging module includes: A first sub-judging module for judging whether the amplitude difference between the three-phase current values exceeds a preset range; A first result output module for outputting as not meeting the preset conditions if it exceeds the preset range; A ratio determining module for determining the ratio between the motor speed value and the three-phase current values if it does not exceed the preset range; A second sub-judging module for judging whether the ratio exceeds a preset ratio; A second result output module for outputting as not meeting the preset conditions if it exceeds the preset ratio; A third result output module for outputting as meeting the preset conditions if it does not exceed the preset ratio.

6. The judging device for the inter-turn short circuit of a traction motor according to claim 5, characterized in that, the device further comprises: a second receiving module, configured to receive the stator temperature and vibration value of the target traction motor if a preset condition is met; a second judging module, configured to judge whether there is a tendency of inter-turn short circuit in the target traction motor according to the stator temperature and vibration value; an inter-turn short circuit tendency determining module, configured to send an inter-turn short circuit tendency message if there is a tendency of inter-turn short circuit.

7. A computer device, characterized in that, it includes: a memory, a processor, and a computer program stored on the memory and executable on the processor, and when the processor executes the computer program, the judging method for the inter-turn short circuit of a traction motor according to any one of claims 1-4 is implemented.

8. A computer-readable storage medium, characterized in that, instructions are stored in the computer-readable storage medium, and when the instructions are run on a terminal device, the terminal device is caused to execute the judging method for the inter-turn short circuit of a traction motor according to any one of claims 1-4.

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