Railway power supply control method and system

Abstract

The embodiment of the present application relates to the technical field of railway power supply, and discloses a railway power supply control method and system. The method first obtains the workload status of the first and second gateway devices, determines the target gateway device based on this, and sends the power supply transformer status data monitored by the detection sensor to the cloud server through the target gateway device. Then, the data is analyzed using the transformer status assessment model preset by the cloud server, and a power supply control instruction is generated based on the analysis results. If the temperature of the power supply transformer is abnormal, a first control instruction is generated to control the cooling device to start cooling and make a small adjustment to the output voltage or current; if the voltage or current is abnormal, a second control instruction is generated to make a large adjustment to the output voltage or current. In this way, not only the accuracy and timeliness of the power supply control are guaranteed, but also the stability and safety of the railway power supply are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of railway power supply, and in particular to a railway power supply control method and system. Background Art

[0002] As critical infrastructure for railway operations, the stable operation of railway power supply systems is crucial for ensuring the safety and efficiency of railway transportation. Within these systems, power transformers boost the mains voltage to high voltage, providing power to various equipment along the railway line. With the continuous development of railways, the scale and complexity of railway power supply systems are increasing, placing higher demands on the accuracy and reliability of power supply control.

[0003] In recent years, the intelligence level of railway power supply systems has continued to increase. By introducing detection sensors for power supply status monitoring and other technical means, real-time monitoring of power transformer status and accurate fault warnings have been achieved. However, in actual operation, the complex and changing railway power supply environment may cause abnormalities in the transmission of power transformer status data, thereby affecting the accuracy and timeliness of power supply control. Summary of the Invention

[0004] The main purpose of the present invention is to provide a railway power supply control method and system, which aims to solve the technical problem in the prior art that the workload status of the communication gateway equipment is easily affected by various factors, resulting in abnormal transmission of power supply transformer status data, thereby affecting the accuracy and timeliness of power supply control.

[0005] To achieve the above objectives, in a first aspect, an embodiment of the present application provides a railway power supply control method, which is applied to a railway power supply system, wherein the railway power supply system includes a power supply transformer, a detection sensor, a first gateway device, a second gateway device, a cooling device, and a cloud server. The power supply transformer is used to boost the mains voltage to obtain a high voltage voltage for railway power supply, the detection sensor is used to monitor the status of the power supply transformer, the first gateway device and the second gateway device are used to send power supply transformer status data to the cloud server and receive power supply control instructions from the cloud server, the cloud server is used to receive and process the power supply transformer status data to obtain a power supply control instruction, and the cooling device is used to cool the power supply transformer according to the power supply control instruction; the method includes:

[0006] Obtaining workload status of the first gateway device and the second gateway device;

[0007] Determining a target gateway device in the first gateway device and the second gateway device according to workload status of the first gateway device and the second gateway device;

[0008] Sending the power transformer status data monitored by the detection sensor to the cloud server through the target gateway device;

[0009] Analyzing the power transformer status data using a power transformer status assessment model preset by a cloud server to obtain an analysis result, wherein the analysis result is used to indicate whether the operating status of the power transformer is normal;

[0010] A power supply control instruction is generated based on the analysis result, wherein, when the temperature of the power supply transformer is abnormal, the cloud server generates a first control instruction, and the first control instruction is used to control the cooling device to start cooling the power supply transformer and adjust the output voltage or current of the power supply transformer by a first amplitude; when the voltage or current of the power supply transformer is abnormal, the cloud server generates a second control instruction, and the second control instruction is used to control the output voltage or current of the power supply transformer to be adjusted by a second amplitude, and the second amplitude is greater than the first amplitude.

[0011] In a possible implementation, the workload status includes an operating temperature of the gateway device, and obtaining the workload status of the first gateway device and the second gateway device includes:

[0012] Obtaining current surface temperatures of the first gateway device and the second gateway device respectively;

[0013] The current surface temperature is corrected according to the operating temperature rise data of the first gateway device and the second gateway device to obtain the operating temperature of the first gateway device and the second gateway device. The operating temperature rise data is used to characterize the increase in the internal temperature of the gateway device relative to the surface temperature when the gateway device is working normally.

[0014] In one possible implementation, correcting the current surface temperature according to the operating temperature rise data of the first gateway device and the second gateway device to obtain the operating temperature of the first gateway device and the second gateway device includes:

[0015] Obtaining initial operating temperature rise data of the first gateway device and the second gateway device;

[0016] Performing a first correction on the initial operating temperature rise data according to the cumulative operating time of the first gateway device and the second gateway device to obtain target operating temperature rise data;

[0017] A second correction is performed on the current surface temperature according to the target operating temperature rise data of the first gateway device and the second gateway device to obtain the operating temperatures of the first gateway device and the second gateway device.

[0018] In a possible implementation, performing a first correction on the initial operating temperature rise data according to the accumulated operating time of the first gateway device and the second gateway device to obtain the target operating temperature rise data includes:

[0019] When the cumulative operating time of the first gateway device and the second gateway device is greater than the first preset time and less than the second preset time, the initial operating temperature rise data is corrected according to the first preset ratio to obtain the target operating temperature rise data;

[0020] When the cumulative working time of the first gateway device and the second gateway device is greater than or equal to the second preset time, the initial working temperature rise data is corrected according to the second preset ratio to obtain the target working temperature rise data, wherein the second preset ratio is greater than the first preset ratio.

[0021] In a possible implementation, determining the target gateway device in the first gateway device and the second gateway device according to the workload status of the first gateway device and the second gateway device includes:

[0022] When the workload status of the first gateway device and the second gateway device exceeds a preset status, obtaining historical communication data of the first gateway device and the second gateway device;

[0023] determining a communication stability between the first gateway device and the second gateway device according to historical communication data of the first gateway device and the second gateway device;

[0024] The one of the first gateway device and the second gateway device with higher communication stability is determined as the target gateway device.

[0025] In one possible implementation, the historical communication data includes the number of communication interruptions and the total number of communication attempts, the number of connection establishment failures and the total number of connection attempts, the cumulative duration of signal strength below a threshold, and the total monitoring duration within a past preset time period; and determining the communication stability of the first gateway device and the second gateway device based on the historical communication data of the first gateway device and the second gateway device includes:

[0026] The historical communication data of the first gateway device and the second gateway device are respectively input into a pre-trained communication stability evaluation model to obtain a communication stability score of each gateway device. The communication stability evaluation model satisfies the following expression:

[0027] + + )

[0028] Among them, W is the communication stability score of the gateway device, and The number of communication interruptions and the total number of communication attempts of the corresponding gateway device in the past preset time period are respectively and They are the cumulative duration of the signal strength of the corresponding gateway device being lower than the threshold and the total monitoring duration, and They are the number of failed connection establishment attempts and the total number of connection attempts for the corresponding gateway device, respectively. P1, P2, and P3 are the weights of the impact of each indicator on communication stability.

[0029] In a possible implementation, determining the first gateway device and the second gateway device with a higher communication stability as the target gateway device includes:

[0030] Determine that the first gateway device and the second gateway device with the higher communication stability is prioritized as the target gateway device to communicate for the first preset duration;

[0031] After the first preset duration of communication ends, determine the device with the lower communication stability as the target gateway device to communicate for the second preset duration, wherein the first preset duration is greater than the second preset duration;

[0032] The first gateway device and the second gateway device with higher communication stability are used as the target gateway device for communication for the first preset time, and the first gateway device and the second gateway device with lower communication stability are used as the target gateway device for communication for the second preset time, and the target gateway device is switched alternately and cyclically.

[0033] In a possible implementation, during the process of alternating and cyclically switching the target gateway device, the method further includes:

[0034] Monitor the real-time communication status of the current target gateway device. If it is determined that the communication stability of the current target gateway device has dropped sharply or the communication is interrupted, immediately switch to another gateway device for communication.

[0035] In a possible implementation, analyzing the power transformer status data using a transformer status assessment model preset by a cloud server to obtain an analysis result includes:

[0036] The power transformer status assessment model is based on a deep learning algorithm to extract and analyze features of the input power transformer status data, including the output current data, output voltage data, and temperature data of the power transformer;

[0037] Based on the analysis results, it is determined that the temperature of the power supply transformer exceeds a preset threshold range and the temperature change rate exceeds a preset value, and the power supply transformer temperature is determined to be abnormal;

[0038] Based on the analysis results, it is determined that the current or voltage exceeds the preset threshold range and the fluctuation amplitude exceeds the preset value, and the current or voltage of the power supply transformer is abnormal.

[0039] In a second aspect, an embodiment of the present application further provides a railway power supply system, including a power supply transformer, a detection sensor, a first gateway device, a second gateway device, a cooling device and a cloud server, wherein the power supply transformer is used to boost the mains voltage to obtain a high voltage voltage for railway power supply, the detection sensor is used to monitor the status of the power supply transformer, the first gateway device and the second gateway device are used to send power supply transformer status data to the cloud server and receive power supply control instructions from the cloud server, the cloud server is used to receive and process the power supply transformer status data to obtain power supply control instructions, and the cooling device is used to cool the power supply transformer according to the power supply control instructions; and

[0040] A memory and a processor, wherein the memory is used to store program code, and the processor is used to call the program code to execute the method as described in the first aspect.

[0041] Different from the prior art, the railway power supply control method provided by the embodiment of the present application first obtains the workload status of the first and second gateway devices, determines the target gateway device based on this, and sends the power supply transformer status data monitored by the detection sensor to the cloud server through the target gateway device. Then, the data is analyzed using the transformer status assessment model preset by the cloud server, and a power supply control instruction is generated based on the analysis results. If the temperature of the power supply transformer is abnormal, a first control instruction is generated to control the cooling device to start cooling and make a small adjustment to the output voltage or current; if the voltage or current is abnormal, a second control instruction is generated to make a large adjustment to the output voltage or current. This solution achieves effective management of the power supply transformers in the railway power supply system through reasonable equipment status monitoring and data transmission, as well as precise instruction generation and control, which not only ensures the accuracy and timeliness of power supply control, but also improves the stability and safety of railway power supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0043] Figure 1 This is a schematic diagram of the functional module structure of the railway power supply system in some embodiments of the present application;

[0044] Figure 2 This is a flow chart of a railway power supply control method in some embodiments of the present application;

[0045] Figure 3 Schematic diagram of the flow of railway power supply control methods in other embodiments of the present application;

[0046] Figure 4 This is a schematic diagram of the hardware structure of the railway power supply system in some embodiments of the present application.

[0047] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0048] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0049] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0050] In addition, the descriptions of "first", "second", etc. in the present invention are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, "and / or" in the full text includes three solutions. Taking A and / or B as an example, it includes technical solution A, technical solution B, and technical solution that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0051] As critical infrastructure for railway operations, the stable operation of railway power supply systems is crucial for ensuring the safety and efficiency of railway transportation. Within these systems, power transformers boost the mains voltage to high voltage, providing power to various equipment along the railway line. With the continuous development of railways, the scale and complexity of railway power supply systems are increasing, placing higher demands on the accuracy and reliability of power supply control.

[0052] In recent years, the intelligence level of railway power supply systems has continued to increase. By introducing detection sensors for power supply status monitoring and other technical means, real-time monitoring of power transformer status and accurate fault warnings have been achieved. However, in actual operation, the complex and changing railway power supply environment may cause abnormalities in the transmission of power transformer status data, thereby affecting the accuracy and timeliness of power supply control.

[0053] To solve the above problems, Figure 1 As shown, an embodiment of the present application provides a railway power supply system, which includes a power supply transformer 100, a detection sensor 200, a first gateway device 300, a second gateway device 400, a cooling device 500 and a cloud server 600. The power supply transformer 100 is used to boost the mains voltage to obtain a high voltage voltage for railway power supply, the detection sensor 200 is used to monitor the status of the power supply transformer 100, the first gateway device 300 and the second gateway device 400 are used to send the status data of the power supply transformer 100 to the cloud server 600 and receive the power supply control instructions of the cloud server 600, the cloud server 600 is used to receive and process the status data of the power supply transformer 100 to obtain the power supply control instructions, the cooling device 500 is used to cool the power supply transformer 600 according to the power supply control instructions, and the cooling device 500 can be an air-cooled device or a liquid-cooled device, which is not limited here.

[0054] It can be understood that in the technical solution of the present application, the power supply transformer configured in the railway power supply system is responsible for stepping up the AC power voltage to meet the railway power supply needs, the detection sensor monitors the status of the power supply transformer in real time, the first gateway device and the second gateway device are responsible for data transmission and command reception, and the cloud server serves as the core processing unit to receive and analyze status data to generate accurate power supply control instructions. At the same time, the system is also equipped with cooling equipment to perform necessary cooling treatment on the power supply transformer according to the instructions.

[0055] During operation, the power transformer status detection data is sent via the first or second gateway device to the cloud server for analysis, allowing timely determination of the transformer's normal status. If the transformer's status is abnormal, the cloud server sends power control instructions to the corresponding gateway device to control the transformer accordingly. This system, through intelligent data processing and response mechanisms, coupled with the powerful computing power of the cloud server, ensures efficient, safe, and stable railway power supply.

[0056] like Figure 1-Figure 3As shown, the following takes the railway power supply system executing the railway power supply control method as an example for explanation. It should be noted that although the logical order is shown in the flow chart, in some cases, the steps shown or described can be executed in a different order than here. Figure 2 The method includes the following steps S200 to S1000:

[0057] Step S200: Obtain workload status of the first gateway device and the second gateway device;

[0058] The workload status of a gateway device can be determined by the device's operating hours or operating temperature. It is understood that the longer the gateway device's cumulative operating hours, the greater its workload and the lower its communication performance or stability. Similarly, the higher the gateway device's operating temperature, the greater its workload and the lower its communication performance or stability. In other application scenarios, the gateway device's operating hours and operating temperature can be combined to determine its workload status.

[0059] In one embodiment, the workload status is the operating temperature of the gateway device. Step S200: obtaining the workload status of the first gateway device and the second gateway device includes: obtaining the current surface temperatures of the first gateway device and the second gateway device respectively; correcting the current surface temperatures according to operating temperature rise data of the first gateway device and the second gateway device to obtain the operating temperatures of the first gateway device and the second gateway device, where the operating temperature rise data is used to represent the increase in the internal temperature of the gateway device relative to the surface temperature when the gateway device is operating normally.

[0060] The operating temperature of a gateway device refers to the stable internal temperature of the gateway device when it is operating, i.e., the stable temperature value or stable temperature range of the gateway device when in operation. The current surface temperature of a gateway device refers to the current surface temperature of the gateway device when it is not operating. It is understood that the operating temperature of a gateway device significantly affects its communication performance. Therefore, simply detecting the current surface temperature of a gateway device cannot determine which gateway device is suitable as the target gateway device for data communication. In other words, relying on the current surface temperature of a gateway device to select a target gateway device can result in significant errors.

[0061] Therefore, to improve the timeliness and accuracy of power supply control, in this embodiment, the current surface temperatures of the first and second gateway devices are first obtained. These current surface temperatures are then corrected based on the operating temperature rise data of the first and second gateway devices to obtain the operating temperatures of the first and second gateway devices. Finally, the target gateway device can be determined based on the operating temperatures of the first and second gateway devices. For example, the gateway device with the lowest operating temperature can be selected as the target gateway device for communication.

[0062] It is understandable that the operating temperature rise data of a gateway device is not fixed and is affected by various factors. For example, when the gateway device is used for more than a certain period of time, the internal hardware ages, and its operating temperature rise increases significantly. Therefore, in one embodiment, the step of correcting the current surface temperature based on the operating temperature rise data of the first and second gateway devices to obtain the operating temperatures of the first and second gateway devices includes: obtaining initial operating temperature rise data of the first and second gateway devices; performing a first correction on the initial operating temperature rise data based on the accumulated operating time of the first and second gateway devices to obtain target operating temperature rise data; and performing a second correction on the current surface temperature based on the target operating temperature rise data of the first and second gateway devices to obtain the operating temperatures of the first and second gateway devices.

[0063] The initial operating temperature rise data refers to the original operating temperature rise range calibrated based on the performance parameters of the internal hardware of the gateway device when it leaves the factory.

[0064] In one embodiment, a first correction can be performed on the initial operating temperature rise data of the first gateway device based on its cumulative operating time to obtain the target operating temperature rise data of the first gateway device. Then, a second correction can be performed on the current surface temperature of the first gateway device based on the target temperature rise data of the first gateway device to obtain the operating temperature of the first gateway device. Similarly, a first correction can be performed on the initial operating temperature rise data of the second gateway device based on its cumulative operating time to obtain the target operating temperature rise data of the second gateway device. Then, a second correction can be performed on the current surface temperature of the second gateway device based on the target temperature rise data of the second gateway device to obtain the operating temperature of the second gateway device. Both the first correction and the second correction can be performed according to a certain ratio.

[0065] Specifically, when the cumulative working time of the first gateway device and the second gateway device is greater than the first preset time and less than the second preset time, it means that the load of the gateway device is relatively large, and the current working temperature rise data has a small increase relative to the initial working temperature rise data. At this time, the initial working temperature rise data is corrected according to the first preset ratio to obtain the target working temperature rise data; when the cumulative working time of the first gateway device and the second gateway device is greater than or equal to the second preset time, it means that the load of the gateway device is very large, and the current working temperature rise data has a large increase relative to the initial working temperature rise data. At this time, the initial working temperature rise data is corrected according to the second preset ratio to obtain the target working temperature rise data, wherein the second preset ratio is greater than the first preset ratio.

[0066] For example, if the current surface temperature of the first gateway device is T1, the initial operating temperature rise data is R1, and the accumulated operating time is greater than a first preset time and less than a second preset time (e.g., between 100 hours and 300 hours), a first correction is performed on the initial operating temperature rise data according to a first preset ratio K1 to obtain a target operating temperature rise data of R1*K1. A second correction is performed on the current surface temperature of the second gateway device according to the target temperature rise data to obtain a second operating temperature of T1*R1*K1. If the current surface temperature of the first gateway device is T1, the initial operating temperature rise data is R1, and the accumulated operating time is greater than or equal to the second preset time (up to 300 hours), a first correction is performed on the initial operating temperature rise data according to a second preset ratio K2 to obtain a target operating temperature rise data of R1*K2. A second correction is performed on the current surface temperature of the second gateway device according to the target temperature rise data to obtain a second operating temperature of T1*R1*K2. Similarly, the operating temperature calculation process for the second gateway device is similar to that for the first gateway device and will not be further described here.

[0067] Step S400: Determine a target gateway device in the first gateway device and the second gateway device according to the workload status of the first gateway device and the second gateway device;

[0068] It is understood that the lower the workload of a gateway device, the higher its communication performance or communication stability. Therefore, when the workload status of the first gateway device and the second gateway device does not exceed the load threshold, or when one is overloaded and the other is not overloaded, the gateway device with the lower workload of the first or second gateway device is selected as the target gateway device to ensure the timeliness and stability of data communication. However, when the workload status of the first gateway device and the second gateway device both exceed the load threshold, there is a risk of communication interruption when communicating through either gateway device.

[0069] Based on this, in one embodiment, step S400 of determining a target gateway device in the first gateway device and the second gateway device according to workload status of the first gateway device and the second gateway device includes:

[0070] Step S410: When the workload status of the first gateway device and the second gateway device exceeds a preset status, obtain historical communication data of the first gateway device and the second gateway device;

[0071] Step S420: Determine the communication stability between the first gateway device and the second gateway device based on historical communication data between the first gateway device and the second gateway device;

[0072] Step S430: Determine the first gateway device and the second gateway device with higher communication stability as the target gateway device.

[0073] Specifically, when the workloads of both gateway devices are high, that is, when both exceed the preset load state, since there is a risk of communication interruption when any gateway device communicates, it is difficult to make the best choice based solely on the current workload state. Therefore, it is necessary to give additional consideration to their historical performance. More specifically, the historical communication data of the first gateway device and the second gateway device can be retrieved from the storage system first or a data request can be sent to obtain the historical communication data of the first gateway device and the second gateway device. These data may include key indicators such as communication connection success rate, communication success rate, data packet loss rate, and communication delay time. Then, by analyzing the historical communication data, the communication stability of the two gateway devices is evaluated. Finally, the gateway device with higher communication stability in historical communications is selected as the target gateway device. In this way, by selecting the gateway device with higher communication stability in historical communications as the target gateway device, the risk of communication interruption can be greatly reduced, and the stability of railway power supply can be further improved.

[0074] In one embodiment, the historical communication data includes the number of communication interruptions and the total number of communication attempts, the number of connection establishment failures and the total number of connection attempts, the cumulative duration of signal strength below a threshold, and the total monitoring duration within a past preset time period; step S420: determining the communication stability of the first gateway device and the second gateway device based on the historical communication data of the first gateway device and the second gateway device, includes:

[0075] The historical communication data of the first gateway device and the second gateway device are respectively input into a pre-trained communication stability evaluation model to obtain a communication stability score of each gateway device. The communication stability evaluation model satisfies the following expression:

[0076] + + )

[0077] Among them, W is the communication stability score of the gateway device, and The number of communication interruptions and the total number of communication attempts of the corresponding gateway device in the past preset time period are respectively and They are the cumulative duration of the signal strength of the corresponding gateway device being lower than the threshold and the total monitoring duration, and They are the number of failed connection establishment attempts and the total number of connection attempts for the corresponding gateway device, respectively. P1, P2, and P3 are the weights of the impact of each indicator on communication stability.

[0078] Specifically, the historical communication data of the first gateway device is input into + + ) to obtain the communication stability score W1 of the first gateway device, and input the historical communication data of the second gateway device into + + ) to obtain the communication stability score of the second gateway device .

[0079] The number of communication interruptions reflects unexpected disconnections during gateway device operation. The total number of communication attempts serves as a reference base number; the ratio of the two provides an understanding of the frequency of communication interruptions. For example, if there are 10 communication interruptions out of 100 total communication attempts, the communication interruption ratio is 10%. A higher communication interruption ratio indicates poor communication stability.

[0080] Indicates the ratio of the number of communication interruptions of the first gateway device to the total number of communication attempts. The higher this ratio is, the more frequent the communication interruptions are, and the greater the negative impact on communication stability is, so the communication stability score will be lowered.

[0081] The number of connection establishment failures indicates the number of times the gateway device encounters failures while attempting to establish a connection with a target device (such as a cloud server). Similarly, when compared with the total number of connection attempts, the probability of connection establishment failure can be calculated. For example, if there are 5 connection establishment failures out of 50 total connection attempts, the failure probability is 10%. A higher probability of connection establishment failure indicates a lower stability of the gateway device during the connection establishment phase.

[0082] Indicates the ratio of the number of failed connection establishment attempts of the first gateway device to the total number of connection attempts. A higher ratio indicates a more unstable connection establishment process, which will also lower the score.

[0083] The cumulative duration of signal strength below the threshold indicates the total duration of weak signal strength (below the set threshold) during the gateway's operation. The total monitoring duration is the total duration of signal strength monitoring for the gateway. The ratio between the two reflects the proportion of poor signal strength during the entire monitoring process. For example, if the cumulative duration of signal strength below the threshold is 600 seconds out of a total monitoring time of 1 hour (3600 seconds), the proportion of poor signal strength is 1 / 6. The higher the poor signal strength ratio, the more the gateway's communication is affected by signal strength, indicating poor communication stability.

[0084] It indicates the ratio of the cumulative duration that the signal strength of the first gateway device is lower than the threshold to the total monitoring duration. The higher the ratio, the more serious the poor signal strength is, which will also reduce the communication stability score.

[0085] Through the above model calculation, the communication stability of the two gateway devices can be quantified, so that the score can be used to decide which device to use as the target gateway device, ensuring that the gateway device with higher communication stability is used for data transmission and communication.

[0086] It should be noted that because gateway data transmission requires extremely high connection stability, the value of P3 can be appropriately increased to make the number of connection establishment failures account for a greater proportion in evaluating communication stability, thereby paying more attention to the stability of the connection establishment phase. For example, P1 is assigned to 0.3, P2 is assigned to 0.3, and P3 is assigned to 0.4.

[0087] As described above, when the workload status of the first gateway device and the second gateway device exceeds the load threshold, there is a risk of communication interruption when communicating through any gateway device. Even if a gateway device with a higher historical communication stability is used as the target gateway device for communication, there is still a certain probability of communication interruption risk.

[0088] Therefore, in one embodiment, determining the first gateway device and the second gateway device with higher communication stability as the target gateway device includes: determining the first gateway device and the second gateway device with higher communication stability as the target gateway device for communication for a first preset duration; after the communication for the first preset duration ends, determining the lower communication stability as the target gateway device for communication for a second preset duration, wherein the first preset duration is greater than the second preset duration; using the first gateway device and the second gateway device with higher communication stability as the target gateway device for communication for the first preset duration, and using the first gateway device and the second gateway device with lower communication stability as the target gateway device for communication for the second preset duration, alternately switching the target gateway device in a cyclical manner.

[0089] It is understandable that when the workload of both gateway devices exceeds the load threshold, even if a gateway device with higher communication stability is selected as the target gateway based on historical communication data, there is still a risk of communication interruption. To reduce this risk, the embodiment of the present application proposes an alternating cyclic switching strategy.

[0090] Specifically, first, based on historical communication data, the gateway device with the higher communication stability is determined between the two gateway devices, and is prioritized as the target gateway device for communication for a first preset duration. During this duration, data communication is performed using the gateway device with the higher communication stability. The first preset duration is set to a relatively long period to fully utilize the higher communication stability of the gateway device. After the first preset duration of communication ends, communication is switched to the gateway device with the lower communication stability for a second preset duration. The second preset duration is set to a relatively short period to mitigate the risks associated with lower communication stability. After the second preset duration of communication is completed, communication is switched again to the gateway device with the higher communication stability for the next round of communication for the first preset duration. This alternating switching process prevents the first or second gateway device from continuing to operate for extended periods when already overloaded, further increasing their workload, thereby further improving data transmission stability. Furthermore, during the alternating switching process, the real-time communication status of the current target gateway device can be monitored in real time. If the communication stability of the current target gateway device decreases sharply or communication is interrupted, communication is immediately switched to another gateway device.

[0091] Step S600: sending the power transformer status data monitored by the detection sensor to the cloud server through the target gateway device;

[0092] After the target gateway device is determined, the power transformer status data monitored by the detection sensor is sent to the cloud server through the determined target gateway device.

[0093] Step S800: Analyze the power transformer status data using a transformer status assessment model preset by a cloud server to obtain an analysis result, wherein the analysis result is used to indicate whether the operating status of the power transformer is normal;

[0094] The cloud server uses a pre-defined transformer condition assessment model to conduct an in-depth analysis of the received data and determine whether the power transformer is operating normally. This step fully utilizes the powerful processing capabilities of cloud computing to improve the accuracy and efficiency of the analysis.

[0095] Specifically, the power transformer status assessment model built into the cloud server is based on a deep learning algorithm to extract and analyze features of the input power transformer status data, which includes the output current data, output voltage data and temperature data of the power transformer; when it is determined that the power transformer temperature exceeds the preset threshold range and the temperature change rate exceeds the preset value, the power transformer temperature is judged to be abnormal; when it is determined that the current or voltage exceeds the preset threshold range and the fluctuation amplitude exceeds the preset value, the power transformer current or voltage is judged to be abnormal.

[0096] Step S1000: Generate a power supply control instruction based on the analysis result, wherein, when the temperature of the power supply transformer is abnormal, the cloud server generates a first control instruction, and the first control instruction is used to control the cooling device to start cooling the power supply transformer and adjust the output voltage or current of the power supply transformer by a first amplitude; when the voltage or current of the power supply transformer is abnormal, the cloud server generates a second control instruction, and the second control instruction is used to control the output voltage or current of the power supply transformer to be adjusted by a second amplitude, and the second amplitude is greater than the first amplitude.

[0097] The first amplitude refers to the small adjustment to the transformer's output voltage or current made in the first control instruction generated by the cloud server when the transformer's temperature is abnormal. This fine-tuning of the output voltage or current reduces the transformer's load, thereby helping to dissipate heat and lower temperatures, without affecting the stability of the power supply system.

[0098] The second amplitude refers to the significant adjustment to the transformer's output voltage or current, generated by the cloud server in the second control command when the transformer's voltage or current is abnormal. The goal is to quickly restore the stability of the power supply system and prevent equipment damage or power outages caused by voltage or current anomalies.

[0099] In this way, in the embodiment of the present application, for temperature abnormalities (minor abnormal conditions), it is only necessary to start the cooling equipment and slightly adjust the output voltage or current to ensure the stability of the railway power supply; for voltage or current abnormalities (serious abnormal conditions), more urgent control measures are taken to quickly and significantly reduce the output voltage or current to ensure the safety of the railway power supply.

[0100] like Figure 4 As shown, Figure 4 This is a schematic diagram of the hardware structure of the railway power supply system in some embodiments of the present application. The railway power supply system provided in the embodiments of the present application also includes a memory 1000 and a processor 2000, wherein the memory 1000 is used to store computer-readable instructions, and the processor 2000 is used to call the computer-readable instructions to execute the railway power supply control method as described above.

[0101] The processor 2000 is configured to provide computing and control capabilities to control a railway power supply system to perform corresponding tasks, for example, controlling the railway power supply system to perform a railway power supply control method in any of the above-mentioned method embodiments, the method comprising: obtaining workload status of a first gateway device and a second gateway device; determining a target gateway device in the first gateway device and the second gateway device based on the workload status of the first gateway device and the second gateway device; sending power transformer status data monitored by a detection sensor to a cloud server through the target gateway device; analyzing the power transformer status data using a transformer status assessment model preset by the cloud server to obtain an analysis result, the analysis result being used to characterize whether the operating status of the power transformer is normal; and generating a power supply control instruction based on the analysis result, wherein when the temperature of the power transformer is abnormal, the cloud server generates a first control instruction, the first control instruction being used to control a cooling device to start cooling the power transformer and adjusting an output voltage or current of the power transformer by a first amplitude; when the voltage or current of the power transformer is abnormal, the cloud server generates a second control instruction, the second control instruction being used to control an adjustment of the output voltage or current of the power transformer by a second amplitude, the second amplitude being greater than the first amplitude.

[0102] Processor 2000 may be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), a hardware chip, or any combination thereof; it may also be a digital signal processing (DSP), an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or any combination thereof. The PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a generic array logic (GAL), or any combination thereof.

[0103] Memory 1000, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs, non-transitory computer-executable programs, and modules, such as the program instructions / modules corresponding to the railway power supply control method in the embodiments of the present application. Processor 2000 can implement the railway power supply control method in any of the above-described method embodiments by executing the non-transitory software programs, instructions, and modules stored in memory 1000.

[0104] Specifically, the memory 1000 may include a volatile memory (VM), such as a random access memory (RAM); the memory 1000 may also include a non-volatile memory (NVM), such as a read-only memory (ROM), a flash memory, a hard disk drive (HDD) or a solid-state drive (SSD) or other non-transitory solid-state storage device; the memory 1000 may also include a combination of the above types of memory.

[0105] In summary, the railway power supply system of the present application adopts the technical solution of any one of the above-mentioned railway power supply control method embodiments, and therefore, has at least the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0106] The present application also provides a computer-readable storage medium, such as a memory including program code. The program code can be executed by a processor to implement the railway power supply control method of the above embodiment. For example, the computer-readable storage medium can be a read-only memory (ROM), a random access memory (RAM), a compact disc read-only memory (CDROM), a magnetic tape, a floppy disk, or an optical data storage device.

[0107] The present application also provides a computer program product comprising one or more program codes stored in a computer-readable storage medium. A processor of a railway power supply system reads the program code from the computer-readable storage medium and executes the program code to perform the steps of the railway power supply control method provided in the above embodiment.

[0108] Those skilled in the art will understand that all or part of the steps of implementing the above embodiments can be completed by hardware, or by hardware related to program code, and the program can be stored in a computer-readable storage medium. The above-mentioned storage medium can be a read-only memory, a disk or an optical disk, etc.

[0109] It should be noted that the device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the modules may be selected based on actual needs to achieve the objectives of this embodiment.

[0110] Through the description of the above embodiments, it is clear to those skilled in the art that each embodiment can be implemented by means of software plus a general hardware platform, or of course by hardware. It is understood by those skilled in the art that all or part of the processes in the above-mentioned embodiment methods can be implemented by instructing the relevant hardware through a computer program, and the program can be stored in a computer-readable storage medium. When the program is executed, it can include the processes of the embodiments of the above-mentioned methods. The storage medium can be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

[0111] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention description and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A railway power supply control method, characterized in that: Applied to a railway power supply system, the railway power supply system includes a power supply transformer, a detection sensor, a first gateway device, a second gateway device, a cooling device, and a cloud server. The power supply transformer is used to boost the mains voltage to obtain a high voltage voltage for railway power supply. The detection sensor is used to monitor the status of the power supply transformer. The first gateway device and the second gateway device are used to send power supply transformer status data to the cloud server and receive power supply control instructions from the cloud server. The cloud server is used to receive and process the power supply transformer status data to obtain a power supply control instruction. The cooling device is used to cool the power supply transformer according to the power supply control instruction. The method includes: Obtaining workload status of the first gateway device and the second gateway device; Determining a target gateway device in the first gateway device and the second gateway device according to workload status of the first gateway device and the second gateway device; Sending the power transformer status data monitored by the detection sensor to the cloud server through the target gateway device; Analyzing the power transformer status data using a transformer status assessment model preset by a cloud server to obtain an analysis result, wherein the analysis result is used to characterize whether the operating status of the power transformer is normal; A power supply control instruction is generated based on the analysis result, wherein, when the temperature of the power supply transformer is abnormal, the cloud server generates a first control instruction, and the first control instruction is used to control the cooling device to start cooling the power supply transformer and adjust the output voltage or current of the power supply transformer by a first amplitude; when the voltage or current of the power supply transformer is abnormal, the cloud server generates a second control instruction, and the second control instruction is used to control the output voltage or current of the power supply transformer to be adjusted by a second amplitude, and the second amplitude is greater than the first amplitude.

2. The railway power supply control method according to claim 1, characterized in that: The workload status includes an operating temperature of the gateway device, and obtaining the workload status of the first gateway device and the second gateway device includes: Obtaining current surface temperatures of the first gateway device and the second gateway device respectively; The current surface temperature is corrected according to the operating temperature rise data of the first gateway device and the second gateway device to obtain the operating temperature of the first gateway device and the second gateway device. The operating temperature rise data is used to characterize the increase in the internal temperature of the gateway device relative to the surface temperature when the gateway device is working normally.

3. The railway power supply control method according to claim 2, characterized in that: The correcting the current surface temperature according to the operating temperature rise data of the first gateway device and the second gateway device to obtain the operating temperature of the first gateway device and the second gateway device includes: Obtaining initial operating temperature rise data of the first gateway device and the second gateway device; Performing a first correction on the initial operating temperature rise data according to the cumulative operating time of the first gateway device and the second gateway device to obtain target operating temperature rise data; A second correction is performed on the current surface temperature according to the target operating temperature rise data of the first gateway device and the second gateway device to obtain the operating temperatures of the first gateway device and the second gateway device.

4. The railway power supply control method according to claim 3, wherein: The performing a first correction on the initial operating temperature rise data according to the accumulated operating time of the first gateway device and the second gateway device to obtain the target operating temperature rise data includes: When the cumulative operating time of the first gateway device and the second gateway device is greater than the first preset time and less than the second preset time, the initial operating temperature rise data is corrected according to the first preset ratio to obtain the target operating temperature rise data; When the cumulative working time of the first gateway device and the second gateway device is greater than or equal to the second preset time, the initial working temperature rise data is corrected according to the second preset ratio to obtain the target working temperature rise data, wherein the second preset ratio is greater than the first preset ratio.

5. The railway power supply control method according to claim 1, wherein: The determining a target gateway device in the first gateway device and the second gateway device according to the workload status of the first gateway device and the second gateway device includes: When the workload status of the first gateway device and the second gateway device exceeds a preset status, obtaining historical communication data of the first gateway device and the second gateway device; determining a communication stability between the first gateway device and the second gateway device according to historical communication data of the first gateway device and the second gateway device; The one of the first gateway device and the second gateway device with higher communication stability is determined as the target gateway device.

6. The railway power supply control method according to claim 5, characterized in that: The historical communication data includes the number of communication interruptions and the total number of communication attempts in the past preset time period, the number of connection establishment failures and the total number of connection attempts, the cumulative time when the signal strength is below the threshold and the total monitoring time; The determining the communication stability between the first gateway device and the second gateway device according to the historical communication data of the first gateway device and the second gateway device includes: The historical communication data of the first gateway device and the second gateway device are respectively input into a pre-trained communication stability evaluation model to obtain a communication stability score of each gateway device. The communication stability evaluation model satisfies the following expression: + + ） Among them, W is the communication stability score of the gateway device, and The number of communication interruptions and the total number of communication attempts of the corresponding gateway device in the past preset time period are respectively and They are the cumulative duration of the signal strength of the corresponding gateway device being lower than the threshold and the total monitoring duration, and They are the number of failed connection establishment attempts and the total number of connection attempts for the corresponding gateway device, respectively. P1, P2, and P3 are the weights of the impact of each indicator on communication stability.

7. The railway power supply control method according to claim 5, characterized in that: The determining of the first gateway device and the second gateway device having a higher communication stability as the target gateway device includes: Determine that the first gateway device and the second gateway device with the higher communication stability is prioritized as the target gateway device to communicate for the first preset duration; After the first preset duration of communication ends, determine the device with the lower communication stability as the target gateway device to communicate for the second preset duration, wherein the first preset duration is greater than the second preset duration; The first gateway device and the second gateway device with higher communication stability are used as the target gateway device for communication for the first preset time, and the first gateway device and the second gateway device with lower communication stability are used as the target gateway device for communication for the second preset time, and the target gateway device is switched alternately and cyclically.

8. The railway power supply control method according to claim 7, characterized in that: During the process of alternating and cyclically switching the target gateway device, the method further includes: Monitor the real-time communication status of the current target gateway device. If it is determined that the communication stability of the current target gateway device has dropped sharply or the communication is interrupted, immediately switch to another gateway device for communication.

9. The railway power supply control method according to claim 1, wherein: The analyzing of the power transformer status data using the transformer status assessment model preset by the cloud server to obtain an analysis result includes: The power transformer status assessment model is based on a deep learning algorithm to extract and analyze the input power transformer status data, including the output current data, output voltage data, and temperature data of the power transformer. Based on the analysis results, it is determined that the temperature of the power supply transformer exceeds a preset threshold range and the temperature change rate exceeds a preset value, and the power supply transformer temperature is determined to be abnormal; Based on the analysis results, it is determined that the current or voltage exceeds the preset threshold range and the fluctuation amplitude exceeds the preset value, and the current or voltage of the power supply transformer is abnormal.

10. A railway power supply system, characterized in that: The system comprises a power supply transformer, a detection sensor, a first gateway device, a second gateway device, a cooling device, and a cloud server. The power supply transformer is used to boost the mains voltage to obtain a high voltage for railway power supply. The detection sensor is used to monitor the status of the power supply transformer. The first and second gateway devices are used to send power supply transformer status data to the cloud server and receive power supply control instructions from the cloud server. The cloud server is used to receive and process the power supply transformer status data to obtain power supply control instructions. The cooling device is used to cool the power supply transformer according to the power supply control instructions. A memory and a processor, wherein the memory is used to store program code, and the processor is used to call the program code to execute the method according to any one of claims 1 to 9.

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