Apparatus and method for automatically setting temperature threshold of cable joint, and device

Abstract

The present application relates to the technical field of power facilities, and discloses an apparatus and method for automatically setting a temperature threshold of a cable joint, and a device. The apparatus comprises: a cable parameter acquisition module, used for acquiring working parameters and physical parameters of a cable; an environmental parameter acquisition module, used for acquiring environmental parameters of the cable, wherein the environmental parameters include ambient temperature and an ambient wind speed; a temperature monitoring threshold acquisition module, used for inputting the working parameters, the physical parameters and the environmental parameters into a pre-built temperature control model, and generating a temperature monitoring threshold for a cable joint location on the basis of an output result of the temperature control model; and a temperature monitoring threshold synchronization module, used for synchronizing the temperature monitoring threshold to a target temperature sensor. In this technical solution, intelligent temperature monitoring at a cable joint can be achieved by means of dynamic temperature monitoring for the cable joint, thereby improving the accuracy of anomaly alerts, and avoiding the generation of erroneous information due to misidentification and the resulting unnecessary inspections by personnel.

Description

An automatic setting device, method, and equipment for cable joint temperature threshold. Technical Field

[0001] This application belongs to the field of power facility technology, and specifically relates to an automatic setting device, method and equipment for cable joint temperature threshold. Background Technology

[0002] During cable laying, due to the limited cable length, it is often necessary to connect multiple cable segments to meet the actual length requirements. Cable joints can reliably connect two cable segments, ensuring smooth transmission of current or signals between different cable segments.

[0003] Currently, cable joints are prone to overheating when the current is too high, making them an important area that needs to be monitored, especially the temperature. Temperature monitoring can reflect whether there are any abnormalities at the cable joint and whether they will affect the normal use of the cable. However, the current temperature monitoring is not intelligent enough and often misidentifies, resulting in ineffective inspections by staff and increasing their workload.

[0004] Therefore, how to intelligently adjust the temperature warning of cable joints is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] This application provides an automatic setting device, method, and equipment for cable joint temperature threshold. The purpose is to achieve intelligent monitoring of the temperature at the cable joint through dynamic monitoring of the cable joint temperature, improve the accuracy of abnormal early warning, avoid misidentification and generation of incorrect information, and prevent ineffective inspections by staff.

[0006] In a first aspect, embodiments of this application provide an automatic setting device for the temperature threshold of a cable joint, the device comprising:

[0007] The cable parameter acquisition module is used to acquire the cable's operating parameters and physical parameters; wherein, the operating parameters include the operating current, and the physical parameters include the cable core material and core diameter;

[0008] An environmental parameter acquisition module is used to acquire the environmental parameters of the cable; wherein, the environmental parameters include ambient temperature and ambient wind speed;

[0009] The temperature monitoring threshold acquisition module is used to input the working parameters, the physical parameters and the environmental parameters into a pre-built temperature control model, and generate a temperature monitoring threshold for the cable joint location based on the output of the temperature control model.

[0010] A temperature monitoring threshold synchronization module is used to synchronize the temperature monitoring threshold to the target temperature sensor.

[0011] Furthermore, the environmental parameter acquisition module is also used for:

[0012] When the change in the ambient temperature data is detected to exceed the set threshold, the temperature monitoring threshold is reacquired.

[0013] Accordingly, the temperature monitoring threshold synchronization module is also used for:

[0014] Synchronize the updated temperature monitoring thresholds to the target temperature sensor.

[0015] Furthermore, the device also includes:

[0016] The update cycle determination module is used to determine the acquisition cycle of the cable's operating parameters based on the cable's operating status at different times.

[0017] If a change in the operating current of the cable is detected, the temperature monitoring threshold will be re-acquired.

[0018] Accordingly, the temperature monitoring threshold synchronization module is also used for:

[0019] Synchronize the updated temperature monitoring thresholds to the target temperature sensor.

[0020] Furthermore, the temperature monitoring threshold acquisition module is also used for:

[0021] Pre-acquire abnormal temperature data of cable joints under different operating parameters, physical parameters and environmental parameters, and generate training samples and test samples based on the acquired data;

[0022] Supervised training is performed on the training samples to construct a temperature control model;

[0023] The temperature control model is tested using the test samples, and the model is deemed complete when the test results meet the preset requirements.

[0024] Furthermore, the temperature monitoring threshold acquisition module is specifically used for:

[0025] Beforehand, cables with different operating parameters, physical parameters, and environmental parameters are tested for power-on. The temperature data changes when there are abnormalities in the cable joints are recorded, and the lowest temperature is used as the abnormal temperature data to generate training samples and test samples.

[0026] The abnormal temperature data in the training samples are used as labels, and the operating parameters, physical parameters, and environmental parameters are used as input variables to conduct supervised training and construct a temperature control model.

[0027] Furthermore, the device also includes:

[0028] An aging degree determination module is used to obtain the service time of the cable and determine the aging degree of the cable insulation layer based on the service time.

[0029] Accordingly, the temperature monitoring threshold acquisition module is also used for:

[0030] The temperature monitoring threshold for the cable is adjusted based on the degree of aging.

[0031] Furthermore, the device also includes:

[0032] A connector type acquisition module is used to acquire the connector type of the cable; wherein, the connector type includes heat shrink connectors, cold shrink connectors, and bolted connectors;

[0033] Correspondingly, the temperature monitoring threshold acquisition module is used to input the working parameters, the physical parameters, the environmental parameters and the connector type into the temperature control model, and generate the temperature monitoring threshold for the cable connector location based on the output of the temperature control model.

[0034] Secondly, embodiments of this application provide an automatic method for setting a temperature threshold for a cable joint, the method comprising:

[0035] Obtain the cable's operating parameters and physical parameters; wherein, the operating parameters include the operating current, and the physical parameters include the cable core material and core diameter;

[0036] Obtain the environmental parameters of the cable; wherein, the environmental parameters include ambient temperature and ambient wind speed;

[0037] The operating parameters, physical parameters, and environmental parameters are input into a pre-built temperature control model, and a temperature monitoring threshold for the cable joint location is generated based on the output of the temperature control model.

[0038] The temperature monitoring threshold is synchronized to the target temperature sensor.

[0039] Furthermore, obtain the environmental parameters of the cable, including:

[0040] When the change in the ambient temperature data is detected to exceed the set threshold, the temperature monitoring threshold is reacquired.

[0041] Accordingly, synchronizing the temperature monitoring threshold to the target temperature sensor includes:

[0042] Synchronize the updated temperature monitoring thresholds to the target temperature sensor.

[0043] Thirdly, embodiments of this application provide an electronic device including a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the method described in the first aspect.

[0044] Fourthly, embodiments of this application provide a readable storage medium on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method described in the first aspect.

[0045] Fifthly, embodiments of this application provide a chip, the chip including a processor and a communication interface, the communication interface being coupled to the processor, the processor being used to run programs or instructions to implement the method as described in the first aspect.

[0046] In this embodiment, a cable parameter acquisition module is used to acquire the cable's operating parameters and physical parameters; wherein the operating parameters include the operating current, and the physical parameters include the cable core material and core diameter; an environmental parameter acquisition module is used to acquire the cable's environmental parameters; wherein the environmental parameters include ambient temperature and ambient wind speed; a temperature monitoring threshold acquisition module is used to input the operating parameters, physical parameters, and environmental parameters into a pre-built temperature control model, and generate a temperature monitoring threshold for the cable joint location based on the output of the temperature control model; a temperature monitoring threshold synchronization module is used to synchronize the temperature monitoring threshold to a target temperature sensor. Through the above-mentioned automatic setting device for the cable joint temperature threshold, intelligent monitoring of the temperature at the cable joint can be achieved through dynamic monitoring of the cable joint temperature, improving the accuracy of abnormal warnings, avoiding misidentification and generation of incorrect information, and preventing ineffective inspections by staff. Attached Figure Description

[0047] Figure 1 is a schematic diagram of the automatic setting device for the temperature threshold of a cable joint provided in Embodiment 1 of this application;

[0048] Figure 2 is a schematic diagram of the automatic setting device for the temperature threshold of a cable joint provided in Embodiment 2 of this application;

[0049] Figure 3 is a schematic diagram of the automatic setting device for the temperature threshold of a cable joint provided in Embodiment 3 of this application;

[0050] Figure 4 is a schematic diagram of the automatic setting device for the temperature threshold of a cable joint provided in Embodiment 4 of this application;

[0051] Figure 5 is a schematic diagram of the automatic setting device for the temperature threshold of a cable joint provided in Embodiment 5 of this application;

[0052] Figure 6 is a flowchart illustrating the automatic setting method for the temperature threshold of a cable joint provided in Embodiment 6 of this application;

[0053] Figure 7 is a schematic diagram of the structure of the electronic device provided in Embodiment 7 of this application. Detailed Implementation

[0054] To make the objectives, technical solutions, and advantages of this application clearer, specific embodiments of this application will be described in further detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely for explaining this application and not for limiting it. It should also be noted that, for ease of description, only the parts relevant to this application are shown in the drawings, not all of them. Before discussing exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although the flowcharts describe operations (or steps) as sequential processes, many of these operations can be performed in parallel, concurrently, or simultaneously. Furthermore, the order of the operations can be rearranged. The process can be terminated when its operation is completed, but may also have additional steps not included in the drawings. The process can correspond to a method, function, procedure, subroutine, subprogram, etc.

[0055] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0056] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0057] The automatic setting device, method and equipment for cable joint temperature threshold provided in this application will be described in detail below with reference to the accompanying drawings and through specific embodiments and application scenarios.

[0058] Example 1

[0059] Figure 1 is a schematic diagram of the automatic setting device for the temperature threshold of a cable joint provided in Embodiment 1 of this application. As shown in Figure 1, the device specifically includes the following steps:

[0060] The cable parameter acquisition module 101 is used to acquire the cable's operating parameters and physical parameters; wherein, the operating parameters include the operating current, and the physical parameters include the cable core material and core diameter;

[0061] The environmental parameter acquisition module 102 is used to acquire the environmental parameters of the cable; wherein, the environmental parameters include ambient temperature and ambient wind speed.

[0062] The temperature monitoring threshold acquisition module 103 is used to input the working parameters, the physical parameters and the environmental parameters into a pre-built temperature control model, and generate a temperature monitoring threshold for the cable joint location based on the output of the temperature control model.

[0063] Temperature monitoring threshold synchronization module 104 is used to synchronize the temperature monitoring threshold to the target temperature sensor.

[0064] This solution can be applied to scenarios where the temperature monitoring threshold of the temperature sensor on the cable connector is intelligently adjusted.

[0065] Based on the above scenario, it is understandable that the executing entity in this scenario can be a smart terminal used to update the temperature monitoring threshold, such as a desktop computer, laptop computer, tablet computer, and interactive multimedia device, etc., without further restrictions here.

[0066] The cable parameter acquisition module 101 can be a program designed for a smart terminal to acquire relevant parameters of the cable monitored by a temperature sensor that requires adjustment of the temperature monitoring threshold. Specifically, the operating current can be the current value of electrical energy transmitted by the cable during operation. For the same cable, the higher the transmitted current, the higher the temperature of the cable joint.

[0067] The cable core material refers to the raw materials used in manufacturing the cable core, such as copper, aluminum, and aluminum alloys. Different core materials have different thermal conductivity, meaning that, all other things being equal, cable joints made of different core materials will have different temperatures.

[0068] The core diameter can be the diameter of the cross-sectional circle of the cable core. All other things being equal, a cable with a larger core diameter will have a correspondingly lower resistance. Lower resistance results in less Joule heating when current flows through it, which helps to reduce the temperature at the joint.

[0069] One way to obtain the cable's operating parameters is to mount a Hall effect sensor around the cable, as close as possible but not in contact with it. Generally, measurements can be taken on a straight section of the cable to ensure magnetic field uniformity. Power on the cable to bring it into operation. Read the magnetic field strength signal output by the Hall effect sensor. Based on the sensor's sensitivity and the unit of the output signal, the magnetic field strength can be converted into an actual magnetic field strength value. Using the relationship between magnetic field and current, the magnitude of the current in the cable can be calculated. The formula can be used: B = kI;

[0070] Where B is the magnetic field strength, k is the proportionality coefficient, and I is the current. The magnitude of the current is calculated using this formula. The proportionality coefficient can be determined from the Hall sensor's instruction manual.

[0071] One way to obtain the physical parameters of a cable is for staff to input the cable model number, and then the smart terminal uses big data to find the physical parameters corresponding to that cable model, extracting and storing the cable core material and core diameter values.

[0072] The environmental parameter acquisition module 102 can be a temperature sensor and a wind speed sensor, and can be set in the environment where the cable joint is located to collect environmental data at the cable location. Specifically, the ambient temperature can be acquired by observing the change in resistance of the thermistor in the temperature sensor as the ambient temperature at the cable location changes, which in turn causes a change in the electrical signal of the circuit containing the thermistor. Recording this electrical signal reflects the change in the ambient temperature value.

[0073] One way to obtain ambient wind speed is by detecting when wind blows at the cable location. The wind turbine in the anemometer will rotate due to the wind, and the rotational speed of the turbine can be measured and converted into an electrical signal output. For example, the rotational speed of the turbine can be determined by detecting the number of times a mark or hole passes through it. As the turbine rotates, the mark or hole passes through the rotational speed detection module in sequence, which generates a pulse signal. By measuring the frequency of the pulse signal, the rotational speed of the turbine can be determined. The signal processing circuit can then convert the electrical signal into a wind speed value based on the relationship between the rotational speed of the turbine and the wind speed, thus obtaining the ambient wind speed.

[0074] The temperature monitoring threshold acquisition module 103 enables the intelligent terminal to generate a program that generates a temperature monitoring threshold for the cable joint location. Specifically, the temperature control model can be a learning model capable of predicting the temperature monitoring threshold for the cable joint location based on the cable's operating parameters, physical parameters, and environmental parameters of the cable laying location.

[0075] The temperature monitoring threshold can be the maximum temperature a cable joint can withstand while ensuring normal cable operation, or the minimum temperature at which an abnormality occurs at the cable joint. When the temperature data detected by the temperature sensor located at the cable joint exceeds the temperature monitoring threshold, an early warning message indicating an abnormality in the cable joint is generated. Because the temperature of the cable joint is affected by environmental parameters and cable parameters, the temperature monitoring threshold for cable joints varies in different seasons or when installed in different cables.

[0076] One way to determine the temperature monitoring threshold for cable joint locations is to input the current cable's operating and physical parameters, as well as the environmental parameters of the cable laying location, into a pre-built temperature control model. The temperature control model then outputs the temperature monitoring threshold corresponding to the current operating, physical, and environmental parameters based on the pre-learned correlation between the operating, physical, and environmental parameters and the temperature monitoring threshold of the cable joint.

[0077] The temperature monitoring threshold synchronization module 104 can be a program designed by a smart terminal to update the temperature monitoring threshold of the target temperature sensor. Specifically, the target temperature sensor can be a temperature sensor used to detect the cable joint where the temperature monitoring threshold needs to be adjusted. Unlike the ambient temperature sensor, the target temperature sensor is in contact with the cable joint, thus enabling more accurate measurement of the cable joint's temperature.

[0078] The method to synchronize the temperature monitoring threshold to the target sensor can be that the smart terminal queries the communication address of the target temperature sensor set on the cable connector through the cable connector location, sends the currently acquired temperature monitoring threshold to the communication address, and after receiving it, the target temperature sensor overwrites the original temperature monitoring threshold with the current temperature monitoring threshold, thereby achieving temperature monitoring threshold coverage.

[0079] Based on the above solution, optionally, the temperature monitoring threshold acquisition module is further used for:

[0080] Pre-acquire abnormal temperature data of cable joints under different operating parameters, physical parameters and environmental parameters, and generate training samples and test samples based on the acquired data;

[0081] Supervised training is performed on the training samples to construct a temperature control model;

[0082] The temperature control model is tested using the test samples, and the model is deemed complete when the test results meet the preset requirements.

[0083] Training samples are datasets used to train machine learning models. They contain input features and corresponding target outputs.

[0084] Test samples can be datasets used to evaluate the performance of machine learning models. Test samples are independent of training samples and do not participate in the model training process.

[0085] Supervised training can be a machine learning method in which the model's task is to learn the mapping relationship from input features to target output.

[0086] Preset requirements can be pre-defined requirements for the accuracy of the temperature control model's test results. For example, when the accuracy of the temperature control model reaches 99%, it is determined that the temperature control model has been successfully constructed and can be put into use.

[0087] The method for generating training and test samples can be to pre-acquire multiple sets of cables with different operating parameters, physical parameters, and environmental parameters, perform power-on testing on the cables, and record the abnormal temperature data of the cable joints when abnormalities occur. The obtained abnormal temperature data and the corresponding cable operating parameters, physical parameters, and environmental parameters are divided into two groups, one group as training samples and the other group as test samples.

[0088] Supervised training of training samples can be achieved by: organizing the training samples to ensure data quality and completeness; selecting a machine learning model that best fits the training samples, such as linear regression, decision trees, or neural networks; inputting the training samples into the selected model; and adjusting the model's parameters through optimization algorithms to minimize the model's prediction error on the training samples. In other words, the model can obtain values ​​that are closest to the abnormal temperature data in the training samples.

[0089] The temperature control model can be validated by using test samples to evaluate the trained model and calculate its performance metrics. This involves inputting the operating parameters, physical parameters, and environmental parameters from the test samples into the temperature control model and calculating the error between the model's output and abnormal temperature data. Based on the validation results, the model is adjusted and optimized, for example, by adjusting its structure, adding training data, and adjusting parameters. This process continues until the validation results meet the preset requirements, at which point the temperature control model is considered successfully built.

[0090] The advantage of this scheme is that it can determine the temperature monitoring threshold for different cables or cables at different temperatures through the temperature control model, making the acquisition of temperature monitoring thresholds more intelligent and improving the accuracy of abnormal detection at cable joints.

[0091] Based on the above solution, optionally, the temperature monitoring threshold acquisition module is specifically used for:

[0092] Beforehand, cables with different operating parameters, physical parameters, and environmental parameters are tested for power-on. The temperature data changes when there are abnormalities in the cable joints are recorded, and the lowest temperature is used as the abnormal temperature data to generate training samples and test samples.

[0093] The abnormal temperature data in the training samples are used as labels, and the operating parameters, physical parameters, and environmental parameters are used as input variables to conduct supervised training and construct a temperature control model.

[0094] One way to obtain abnormal temperature data is to pre-acquire multiple sets of cables with different operating parameters, physical parameters, and environmental parameters, perform power-on testing on the cables, record the temperature changes of the cable joints when an abnormality occurs, analyze the obtained temperature data, and select the lowest temperature data as the abnormal temperature data.

[0095] One way to build a temperature control model is to use abnormal temperature data from the training samples as labels, and the corresponding operating parameters, physical parameters, and environmental parameters as input variables for supervised training. This allows the temperature control model to learn the correlation between abnormal temperature data and operating parameters, physical parameters, and environmental parameters, and adjust the parameters of the temperature control model so that it can accurately predict new unknown data.

[0096] The advantage of this setup is that the lowest temperature data at the cable joint when there is an anomaly can be used as the abnormal temperature data, which helps to improve the sensitivity of the temperature sensor's anomaly warning and provides more time for staff to handle abnormal problems.

[0097] This solution provides a program code for predicting temperature monitoring thresholds using a temperature control model, for reference:

[0098] In this embodiment, a cable parameter acquisition module is used to acquire the cable's operating parameters and physical parameters; wherein the operating parameters include the operating current, and the physical parameters include the cable core material and core diameter; an environmental parameter acquisition module is used to acquire the cable's environmental parameters; wherein the environmental parameters include ambient temperature and ambient wind speed; a temperature monitoring threshold acquisition module is used to input the operating parameters, physical parameters, and environmental parameters into a pre-built temperature control model, and generate a temperature monitoring threshold for the cable joint location based on the output of the temperature control model; a temperature monitoring threshold synchronization module is used to synchronize the temperature monitoring threshold to a target temperature sensor. Through the above-mentioned automatic setting device for the cable joint temperature threshold, intelligent monitoring of the temperature at the cable joint can be achieved through dynamic monitoring of the cable joint temperature, improving the accuracy of abnormal warnings, avoiding misidentification and generation of incorrect information, and preventing ineffective inspections by staff.

[0099] Example 2

[0100] Figure 2 is a schematic diagram of the automatic setting device for cable joint temperature threshold provided in Embodiment 2 of this application. This solution makes a further improvement on the above embodiment, specifically: the environmental parameter acquisition module is further configured to: re-acquire the temperature monitoring threshold when the change in the ambient temperature data exceeds the set threshold; correspondingly, the temperature monitoring threshold synchronization module is further configured to: synchronize the updated temperature monitoring threshold to the target temperature sensor.

[0101] As shown in Figure 2, the specific components include the following:

[0102] The cable parameter acquisition module 201 is used to acquire the working parameters and physical parameters of the cable; wherein, the working parameters include the working current, and the physical parameters include the cable core material and core diameter;

[0103] The environmental parameter acquisition module 202 is used to acquire the environmental parameters of the cable; wherein, the environmental parameters include ambient temperature and ambient wind speed;

[0104] The temperature monitoring threshold acquisition module 203 is used to input the working parameters, the physical parameters and the environmental parameters into a pre-built temperature control model, and generate a temperature monitoring threshold for the cable joint location based on the output of the temperature control model.

[0105] Temperature monitoring threshold synchronization module 204 is used to synchronize the temperature monitoring threshold to the target temperature sensor.

[0106] The environmental parameter acquisition module 202 is also used to reacquire the temperature monitoring threshold when it is detected that the change in the environmental temperature data exceeds the set threshold.

[0107] Correspondingly, the temperature monitoring threshold synchronization module 204 is also used to synchronize the updated temperature monitoring threshold to the target temperature sensor.

[0108] Setting a threshold is possible because, in reality, the ambient temperature at the cable laying location may fluctuate slightly. This fluctuation will not have a significant impact on the temperature monitoring threshold, but it will cause the temperature monitoring threshold acquisition module and the temperature monitoring threshold synchronization module to run frequently, affecting the detection effect of the temperature sensor at the cable joint. Therefore, the minimum temperature change range that can have a significant impact on the temperature monitoring threshold is set as the threshold. When the change in ambient temperature exceeds the set threshold, the temperature monitoring threshold is then updated.

[0109] One way to re-acquire the temperature monitoring threshold is to calculate the difference between the temperature data obtained by the environmental parameter acquisition module and the temperature data obtained previously. When the difference reaches a set threshold, the current environmental parameters are sent to the temperature monitoring threshold acquisition module, so that the module can re-acquire the temperature monitoring threshold based on the changed temperature.

[0110] By synchronizing the updated temperature monitoring threshold to the target temperature sensor, the temperature monitoring threshold acquisition module can reacquire the temperature monitoring threshold and send it to the target temperature sensor, thereby enabling the target temperature sensor to update the temperature monitoring threshold it is currently using.

[0111] The advantage of this scheme is that it avoids the problem of frequently changing the temperature monitoring threshold due to normal temperature fluctuations, which helps to ensure the stability of the cable joint temperature anomaly detection program.

[0112] Example 3

[0113] Figure 3 is a schematic diagram of the automatic setting device for cable joint temperature threshold provided in Embodiment 3 of this application. This solution makes a further improvement on the above embodiment, specifically: the device further includes: an update cycle determination module, used to determine the acquisition cycle of the cable operating parameters based on the cable's operating status at different times; and to re-acquire the temperature monitoring threshold when a change in the cable's operating current is detected; correspondingly, the temperature monitoring threshold synchronization module is also used to: synchronize the updated temperature monitoring threshold to the target temperature sensor.

[0114] As shown in Figure 3, the specific contents include the following:

[0115] The cable parameter acquisition module 301 is used to acquire the operating parameters and physical parameters of the cable; wherein, the operating parameters include the operating current, and the physical parameters include the cable core material and core diameter;

[0116] The environmental parameter acquisition module 302 is used to acquire the environmental parameters of the cable; wherein, the environmental parameters include ambient temperature and ambient wind speed;

[0117] The temperature monitoring threshold acquisition module 303 is used to input the working parameters, the physical parameters and the environmental parameters into a pre-built temperature control model, and generate a temperature monitoring threshold for the cable joint location based on the output of the temperature control model.

[0118] Temperature monitoring threshold synchronization module 304 is used to synchronize the temperature monitoring threshold to the target temperature sensor;

[0119] The update cycle determination module 305 is used to determine the acquisition cycle of the cable's operating parameters based on the cable's operating status at different times.

[0120] If a change in the operating current of the cable is detected, the temperature monitoring threshold is re-acquired.

[0121] The temperature monitoring threshold synchronization module 304 is also used to synchronize the updated temperature monitoring threshold to the target temperature sensor.

[0122] The method for determining the acquisition cycle of cable operating parameters can be to collect data on the cable's operating status at different stages, such as the initial commissioning period, stable operation period, and aging period. The acquisition cycle for each stage is determined based on the cable's current stability and fault frequency at different times. For example, during the initial commissioning period, when the cable's performance is relatively stable and the fault rate is low, operating parameters can be collected weekly or bi-weekly. During the stable operation period, the cable's operating status is relatively stable, so operating parameters can be collected monthly or bi-monthly. Because the fault rate is high during the aging period, operating parameters can be collected daily or weekly. The current period of the cable is determined, and the corresponding detection cycle is used as the acquisition cycle. In this scheme, the current variation patterns during peak and off-peak electricity consumption periods can also be considered, and the acquisition cycle can be slightly adjusted during peak and off-peak periods.

[0123] The method of re-acquiring the temperature monitoring threshold can be achieved by having the cable parameter acquisition module regularly collect the cable's operating current according to the acquisition cycle, compare the current operating current with the previous operating current, and if the current value changes, send the current to the temperature monitoring threshold acquisition module so that the module can re-acquire the temperature monitoring threshold based on the changed current.

[0124] The advantage of this scheme is that it can update the corresponding temperature monitoring threshold in a timely manner when the cable's operating parameters change, which is conducive to intelligent monitoring of the temperature at the cable joint and improves the accuracy of abnormal early warning.

[0125] Example 4

[0126] Figure 4 is a schematic diagram of the automatic setting device for cable joint temperature threshold provided in Embodiment 4 of this application. This solution makes a further improvement on the above embodiment, specifically: the device further includes an aging degree determination module, used to acquire the service life of the cable and determine the aging degree of the cable insulation layer based on the service life; correspondingly, the temperature monitoring threshold acquisition module is also used to adjust the temperature monitoring threshold of the cable based on the aging degree.

[0127] As shown in Figure 4, the specific contents include the following:

[0128] The cable parameter acquisition module 401 is used to acquire the cable's operating parameters and physical parameters; wherein, the operating parameters include the operating current, and the physical parameters include the cable core material and core diameter;

[0129] The environmental parameter acquisition module 402 is used to acquire the environmental parameters of the cable; wherein, the environmental parameters include ambient temperature and ambient wind speed;

[0130] The temperature monitoring threshold acquisition module 403 is used to input the working parameters, the physical parameters and the environmental parameters into a pre-built temperature control model, and generate a temperature monitoring threshold for the cable joint location based on the output of the temperature control model.

[0131] Temperature monitoring threshold synchronization module 404 is used to synchronize the temperature monitoring threshold to the target temperature sensor;

[0132] The aging degree determination module 405 is used to obtain the service time of the cable and determine the aging degree of the cable insulation layer based on the service time.

[0133] The temperature monitoring threshold acquisition module 403 is also used to adjust the temperature monitoring threshold of the cable according to the degree of aging.

[0134] The usage duration can be the total duration from when the cable was laid or when it began to be used until the current point in time.

[0135] Cable insulation can be a layer that insulates the conductors in the cable from the surrounding environment or adjacent conductors, ensuring that the current, electromagnetic waves, or light waves transmitted by the conductor core propagate only along the conductor and do not flow to the outside world, while ensuring the safety of external objects and personnel.

[0136] One way to determine the aging degree of cable insulation is to have a smart terminal obtain the current cable laying time from the cable laying record, calculate the time difference between the laying time and the current time as the cable usage time, and obtain the average aging degree corresponding to the cable usage time based on big data as the current aging degree of the cable insulation.

[0137] One way to adjust the temperature monitoring threshold is to obtain the aging degree of the cable insulation layer through big data, and then have the smart terminal obtain the tolerance temperature value corresponding to the current aging degree of the insulation layer. If the tolerance temperature value is less than the temperature monitoring threshold, the temperature monitoring threshold data is adjusted to be the same as the tolerance temperature value.

[0138] The advantage of this design is that it also takes into account the impact of insulation aging on temperature warnings when the cable has been in use for a long time. This prevents the insulation from being unable to withstand the temperature generated by the cable and being damaged or causing a fire, which is beneficial to maintaining the safe operation of the cable.

[0139] Example 5

[0140] Figure 5 is a schematic diagram of the automatic setting device for the temperature threshold of a cable joint provided in Embodiment 5 of this application. This solution makes a further improvement on the above embodiment, specifically: the device further includes:

[0141] The connector type acquisition module is used to acquire the connector type of the cable; wherein, the connector type includes heat shrink connector, cold shrink connector and bolt connection connector; correspondingly, the temperature monitoring threshold acquisition module is used to input the working parameters, the physical parameters, the environmental parameters and the connector type into the temperature control model, and generate the temperature monitoring threshold of the cable connector location according to the output result of the temperature control model.

[0142] As shown in Figure 5, the specific contents include the following:

[0143] The cable parameter acquisition module 501 is used to acquire the working parameters and physical parameters of the cable; wherein, the working parameters include the working current, and the physical parameters include the cable core material and core diameter;

[0144] The environmental parameter acquisition module 502 is used to acquire the environmental parameters of the cable; wherein, the environmental parameters include ambient temperature and ambient wind speed;

[0145] The temperature monitoring threshold acquisition module 503 is used to input the working parameters, the physical parameters and the environmental parameters into a pre-built temperature control model, and generate a temperature monitoring threshold for the cable joint location based on the output of the temperature control model.

[0146] Temperature monitoring threshold synchronization module 504 is used to synchronize the temperature monitoring threshold to the target temperature sensor;

[0147] The connector type acquisition module 505 is used to acquire the connector type of the cable; wherein the connector type includes heat shrink connector, cold shrink connector and bolt connection connector.

[0148] The temperature monitoring threshold acquisition module 503 is used to input the working parameters, the physical parameters, the environmental parameters and the connector type into the temperature control model, and generate the temperature monitoring threshold of the cable connector location based on the output of the temperature control model.

[0149] A heat shrinkable connector is made by peeling off the outer sheath of the cable at the end where a cable joint is needed, putting on a special heat shrinkable connector, connecting each core of the cable, and then putting the heat shrinkable connector sleeve on the joint position. The heat shrinkable connector at the joint is then heated using a blowtorch or other heating equipment, so that the heat shrinkable connector adheres to the cable, forming a cable joint.

[0150] Cold-shrink connectors are components of various cable accessories, made by injection molding and vulcanizing elastomeric materials (commonly silicone rubber and ethylene propylene rubber) in a factory, followed by diameter expansion and the addition of plastic spiral supports. During field installation, these pre-expanded components are fitted onto the treated cable ends or joints, the internal supporting plastic spiral strips (supports) are removed, and the connectors are pressed firmly against the cable insulation. Because they shrink at room temperature using elastic recoil force, unlike heat-shrink cable accessories which require heating, they are commonly known as cold-shrink connectors.

[0151] Bolted connectors refer to threaded connectors. Bolted connectors make cable connections simpler, disassembly and replacement easier, and greatly reduce connection costs.

[0152] The cable connector type can be obtained by staff selecting or inputting the current cable connector type through a terminal device, which will then be received and stored by the smart terminal.

[0153] One method for generating temperature monitoring thresholds for cable joint locations is to pre-acquire temperature monitoring thresholds corresponding to cables with different operating parameters, physical parameters, environmental parameters, and joint types. These temperature monitoring thresholds are then used as labels, and the operating parameters, physical parameters, environmental parameters, and joint types are used as input variables for supervised training to update the existing temperature control model. The acquired current cable operating parameters, physical parameters, joint type, and environmental parameters of the cable laying location are all input into the updated temperature control model. Based on the pre-learned correlation between the operating parameters, physical parameters, environmental parameters, joint type, and the temperature monitoring thresholds for the cable joints, the temperature control model outputs the corresponding temperature monitoring thresholds for the current operating parameters, physical parameters, environmental parameters, and joint type.

[0154] The advantage of this scheme is that it takes into account the impact of cable joint type on temperature monitoring threshold, making the determination of temperature monitoring threshold more in line with actual conditions, which helps to increase the accuracy of cable joint abnormality early warning.

[0155] Example 6

[0156] Figure 6 is a flowchart illustrating the automatic setting method for the temperature threshold of a cable joint provided in Embodiment 6 of this application.

[0157] As shown in Figure 6, the specific steps include the following:

[0158] S601. Obtain the operating parameters and physical parameters of the cable; wherein, the operating parameters include the operating current, and the physical parameters include the cable core material and core diameter;

[0159] S602. Obtain the environmental parameters of the cable; wherein, the environmental parameters include ambient temperature and ambient wind speed;

[0160] S603. Input the operating parameters, physical parameters, and environmental parameters into the pre-built temperature control model, and generate the temperature monitoring threshold for the cable joint location based on the output of the temperature control model.

[0161] S604. Synchronize the temperature monitoring threshold to the target temperature sensor.

[0162] Based on the above solution, optionally, the environmental parameters of the cable can be obtained, including:

[0163] When the change in the ambient temperature data is detected to exceed the set threshold, the temperature monitoring threshold is reacquired.

[0164] Accordingly, synchronizing the temperature monitoring threshold to the target temperature sensor includes:

[0165] Synchronize the updated temperature monitoring thresholds to the target temperature sensor.

[0166] In this embodiment, the operating parameters and physical parameters of the cable are acquired; the operating parameters include the operating current, and the physical parameters include the cable core material and core diameter; the environmental parameters of the cable are also acquired; the environmental parameters include the ambient temperature and ambient wind speed; the operating parameters, the physical parameters, and the environmental parameters are input into a pre-built temperature control model, and a temperature monitoring threshold for the cable joint location is generated based on the output of the temperature control model; the temperature monitoring threshold is then synchronized to a target temperature sensor. Through this automatic setting method for the cable joint temperature threshold, intelligent monitoring of the temperature at the cable joint can be achieved through dynamic monitoring of the cable joint temperature, improving the accuracy of abnormal warnings, avoiding misidentification and generation of incorrect information, and preventing ineffective inspections by staff.

[0167] The automatic setting method for cable joint temperature threshold provided in this application corresponds to the automatic setting device for cable joint temperature threshold provided in the above embodiments. It has the same functional modules and beneficial effects, and will not be described again here to avoid repetition.

[0168] Example 7

[0169] As shown in Figure 7, this application embodiment also provides an electronic device 700, including a processor 701, a memory 702, and a program or instructions stored in the memory 702 and executable on the processor 701. When the program or instructions are executed by the processor 701, they implement the various processes of the above-mentioned automatic setting device embodiment for cable connector temperature threshold and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0170] It should be noted that the electronic devices in the embodiments of this application include the mobile electronic devices and non-mobile electronic devices described above.

[0171] Example 8

[0172] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described automatic setting device for cable joint temperature threshold and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0173] The processor is the processor in the electronic device described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0174] Example 9

[0175] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface and the processor are coupled. The processor is used to run programs or instructions to implement the various processes of the above-described automatic setting device embodiment for cable connector temperature threshold, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0176] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0177] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0178] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0179] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

[0180] The above description is merely a preferred embodiment and the technical principles employed in this application. This application is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions that can be made by those skilled in the art will not depart from the scope of protection of this application. Therefore, although this application has been described in detail through the above embodiments, this application is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of this application, the scope of which is determined by the scope of the claims.

Claims

1. An apparatus for automatic setting of a temperature threshold of a cable joint, characterized in that, The device includes: The cable parameter acquisition module is used to acquire the cable's operating parameters and physical parameters; wherein, the operating parameters include the operating current, and the physical parameters include the cable core material and core diameter; An environmental parameter acquisition module is used to acquire the environmental parameters of the cable; wherein, the environmental parameters include ambient temperature and ambient wind speed; The temperature monitoring threshold acquisition module is used to input the working parameters, the physical parameters and the environmental parameters into a pre-built temperature control model, and generate a temperature monitoring threshold for the cable joint location based on the output of the temperature control model. A temperature monitoring threshold synchronization module is used to synchronize the temperature monitoring threshold to the target temperature sensor.

2. The apparatus of claim 1, wherein, The environmental parameter acquisition module is also used for: When the change in the ambient temperature data is detected to exceed the set threshold, the temperature monitoring threshold is reacquired. Accordingly, the temperature monitoring threshold synchronization module is also used for: Synchronize the updated temperature monitoring thresholds to the target temperature sensor.

3. The apparatus of claim 1, wherein, The device further includes: The update cycle determination module is used to determine the acquisition cycle of the cable's operating parameters based on the cable's operating status at different times. If a change in the operating current of the cable is detected, the temperature monitoring threshold will be re-acquired. Accordingly, the temperature monitoring threshold synchronization module is also used for: Synchronize the updated temperature monitoring thresholds to the target temperature sensor.

4. The apparatus of claim 1, wherein, The temperature monitoring threshold acquisition module is also used for: Pre-acquire abnormal temperature data of cable joints under different operating parameters, physical parameters and environmental parameters, and generate training samples and test samples based on the acquired data; Supervised training is performed on the training samples to construct a temperature control model; The temperature control model is tested using the test samples, and the model is deemed complete when the test results meet the preset requirements.

5. The apparatus of claim 4, wherein, The temperature monitoring threshold acquisition module is specifically used for: Beforehand, cables with different operating parameters, physical parameters, and environmental parameters are tested for power-on. The temperature data changes when there are abnormalities in the cable joints are recorded, and the lowest temperature is used as the abnormal temperature data to generate training samples and test samples. The abnormal temperature data in the training samples are used as labels, and the operating parameters, physical parameters, and environmental parameters are used as input variables to conduct supervised training and construct a temperature control model.

6. The apparatus of claim 1, wherein, The device further includes: An aging degree determination module is used to obtain the service time of the cable and determine the aging degree of the cable insulation layer based on the service time. Accordingly, the temperature monitoring threshold acquisition module is also used for: The temperature monitoring threshold for the cable is adjusted based on the degree of aging.

7. The apparatus of claim 1, wherein, The device further includes: A connector type acquisition module is used to acquire the connector type of the cable; wherein, the connector type includes heat shrink connectors, cold shrink connectors, and bolted connectors; Correspondingly, the temperature monitoring threshold acquisition module is used to input the working parameters, the physical parameters, the environmental parameters and the connector type into the temperature control model, and generate the temperature monitoring threshold for the cable connector location based on the output of the temperature control model.

8. A method of automatic setting of a cable joint temperature threshold, characterized by, The method includes: Obtain the cable's operating parameters and physical parameters; wherein, the operating parameters include the operating current, and the physical parameters include the cable core material and core diameter; Obtain the environmental parameters of the cable; wherein, the environmental parameters include ambient temperature and ambient wind speed; The operating parameters, physical parameters, and environmental parameters are input into a pre-built temperature control model, and a temperature monitoring threshold for the cable joint location is generated based on the output of the temperature control model. The temperature monitoring threshold is synchronized to the target temperature sensor.

9. The method of automatic setting of a temperature threshold value of a cable joint according to claim 8, characterized in that, Obtain the environmental parameters of the cable, including: When the change in the ambient temperature data is detected to exceed the set threshold, the temperature monitoring threshold is reacquired. Accordingly, synchronizing the temperature monitoring threshold to the target temperature sensor includes: Synchronize the updated temperature monitoring thresholds to the target temperature sensor.

10. An electronic device, comprising: The method includes a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the automatic setting method for the temperature threshold of the cable joint as described in any one of claims 8-9.

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