Device, method and equipment for automatically setting temperature threshold value of cable joint

Abstract

The invention discloses a device, a method and equipment for automatically setting a temperature threshold value of a cable joint, and belongs to the technical field of electric power facilities. The device comprises a cable parameter acquisition module used for acquiring working parameters and physical parameters of a cable; the environment parameter acquisition module is used for acquiring environment parameters of the cable; wherein the environment parameters comprise environment temperature and environment wind speed; the temperature monitoring threshold acquisition module is used for inputting the working parameters, the physical parameters and the environmental parameters into a pre-constructed temperature control model and generating a temperature monitoring threshold of the cable joint position according to an output result of the temperature control model; and the temperature monitoring threshold synchronization module is used for synchronizing the temperature monitoring threshold to the target temperature sensor. According to the technical scheme, intelligent monitoring of the temperature of the cable joint can be achieved through dynamic monitoring of the temperature of the cable joint, the accuracy of abnormal early warning is improved, and invalid inspection of workers caused by wrong information generated by wrong recognition is avoided.

Description

Technical Field

[0001] The present application belongs to the technical field of electric power facilities, and specifically relates to an automatic setting device, method and equipment for a temperature threshold of a cable joint. Background Art

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

[0003] At present, cable joints are prone to severe heating and other problems when the current is too large. They are important areas that need to be monitored, especially temperature monitoring. The temperature can reflect whether there is an abnormality at the cable joint, whether it will affect the normal use of the cable, etc. However, the current temperature monitoring is not smart enough, and misidentification often occurs, which leads to ineffective inspections by staff and increases the workload of staff.

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

[0005] The embodiments of the present application provide an apparatus, method and device for automatically setting the temperature threshold of a cable joint, with the aim of realizing intelligent monitoring of the temperature at the cable joint through dynamic monitoring of the temperature of the cable joint, improving the accuracy of abnormal warnings, avoiding misidentification and generating erroneous information, and causing ineffective inspections by staff.

[0006] In a first aspect, an embodiment of the present application provides a device for automatically setting a temperature threshold of a cable joint, the device comprising:

[0007] A cable parameter acquisition module, 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;

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

[0009] A temperature monitoring threshold acquisition module, 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 at a cable joint position according to an output result of the temperature control model;

[0010] The 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 to:

[0012] When it is identified that the change of the ambient temperature data exceeds a set threshold, re-obtaining the temperature monitoring threshold;

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

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

[0015] Furthermore, the device also includes:

[0016] An update cycle determination module, used to determine the acquisition cycle of the cable working parameters according to the operating status of the cable at different periods;

[0017] reacquiring a temperature monitoring threshold value when a change in the operating current of the cable is detected;

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

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

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

[0021] Acquire abnormal temperature data of cable joints under different working parameters, physical parameters and environmental parameters in advance, and generate training samples and test samples based on the acquired data;

[0022] Performing supervised training on the training samples to build a temperature control model;

[0023] The temperature control model is tested using the test sample, and when the test result meets the preset requirement, it is determined that the construction of the temperature control model is completed.

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

[0025] Conduct power-on detection on cables with different working parameters, physical parameters, and environmental parameters in advance, record the temperature data changes when there are abnormalities in the cable joints, and use the lowest temperature as the abnormal temperature data to generate training samples and test samples;

[0026] The abnormal temperature data in the training sample is used as a label, and the working parameter, the physical parameter and the environmental parameter are used as input variables to perform supervised training and build a temperature control model.

[0027] Furthermore, the device also includes:

[0028] An aging degree determination module is used to obtain the usage time of the cable and determine the aging degree of the insulation layer of the cable according to the usage time;

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

[0030] The temperature monitoring threshold of the cable is adjusted according to the aging degree.

[0031] Furthermore, the device also includes:

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

[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 of the cable connector position according to the output result of the temperature control model.

[0034] In a second aspect, an embodiment of the present application provides a method for automatically setting a temperature threshold of a cable joint, the method comprising:

[0035] Obtaining 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;

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

[0037] Inputting the working parameters, the physical parameters and the environmental parameters into a pre-built temperature control model, and generating a temperature monitoring threshold value at a cable joint position according to an output result of the temperature control model;

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

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

[0040] When it is identified that the change of the ambient temperature data exceeds a set threshold, re-obtaining the temperature monitoring threshold;

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

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

[0043] In a third aspect, an embodiment of the present application provides an electronic device, which includes a processor, a memory, and a program or instruction stored in the memory and executable on the processor, wherein the program or instruction, when executed by the processor, implements the steps of the method described in the first aspect.

[0044] In a fourth aspect, an embodiment of the present application provides a readable storage medium, on which a program or instruction is stored, and when the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented.

[0045] In a fifth aspect, an embodiment of the present application provides a chip, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the method described in the first aspect.

[0046] In the embodiment of the present application, the cable parameter acquisition module is used to obtain 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 the core diameter; the environmental parameter acquisition module is used to obtain the environmental parameters of the cable; wherein the environmental parameters include the ambient temperature and the 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 the temperature monitoring threshold of the cable joint position according to the output result of the temperature control model; the temperature monitoring threshold synchronization module is used to synchronize the temperature monitoring threshold to the target temperature sensor. Through the above-mentioned automatic setting device of the cable joint temperature threshold, the intelligent monitoring of the temperature at the cable joint can be realized by dynamically monitoring the temperature of the cable joint, thereby improving the accuracy of abnormal warning, avoiding the misidentification and generation of erroneous information, and causing invalid inspections by staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a structural schematic diagram of a device for automatically setting a temperature threshold of a cable joint provided in Example 1 of the present application;

[0048] Figure 2 It is a structural schematic diagram of a device for automatically setting a temperature threshold of a cable joint provided in Embodiment 2 of the present application;

[0049] Figure 3 It is a structural schematic diagram of a device for automatically setting a temperature threshold of a cable joint provided in Embodiment 3 of the present application;

[0050] Figure 4 It is a structural schematic diagram of a device for automatically setting a temperature threshold of a cable joint provided in Embodiment 4 of the present application;

[0051] Figure 5It is a structural schematic diagram of a device for automatically setting a temperature threshold of a cable joint provided in Embodiment 5 of the present application;

[0052] Figure 6 It is a flowchart of a method for automatically setting a temperature threshold of a cable connector provided in Embodiment 6 of the present application;

[0053] Figure 7 It is a structural diagram of an electronic device provided in Example 7 of the present application. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical scheme and advantages of the present application clearer, the specific embodiments of the present application are further described in detail below in conjunction with the accompanying drawings. It is understood that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for the convenience of description, only the part related to the present application but not all the contents are shown in the accompanying drawings. Before discussing the exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flow charts. Although the flow chart describes each operation (or step) as a sequential process, many of the operations therein can be implemented in parallel, concurrently or simultaneously. In addition, the order of each operation can be rearranged. The process can be terminated when its operation is completed, but it can also have additional steps not included in the accompanying drawings. The process can correspond to a method, a function, a procedure, a subroutine, a subprogram, etc.

[0055] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0056] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0057] In the following, in conjunction with the accompanying drawings, the device, method and equipment for automatically setting the temperature threshold of a cable connector provided in the embodiments of the present application are described in detail through specific embodiments and their application scenarios.

[0058] Embodiment 1

[0059] Figure 1 Schematic diagram of the structure of the device for automatically setting the temperature threshold of the cable joint provided in the first embodiment of the present application. Figure 1 As shown, the specific steps include:

[0060] The cable parameter acquisition module 101 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;

[0061] The environmental parameter acquisition module 102 is used to acquire the environmental parameters of the cable; wherein the environmental parameters include the ambient temperature and the 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 at the cable joint position according to the output result of the temperature control model;

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

[0064] The application scenario of this solution may be a scenario in which the temperature monitoring threshold of the temperature sensor of the cable connector is intelligently adjusted.

[0065] Based on the above scenario, it can be understood that the executor of this scenario can be an intelligent terminal for updating the temperature monitoring threshold, such as a desktop computer, a laptop computer, a tablet computer, and an interactive multimedia device, etc., and no excessive limitations are made here.

[0066] The cable parameter acquisition module 101 may be a program design for the intelligent terminal to obtain the relevant parameters of the cable monitored by the temperature sensor for which the temperature monitoring threshold needs to be adjusted. Specifically, the working current may be the current value of the electric energy transmitted when the current cable is in operation. For the same cable, the greater the current transmitted, the higher the temperature of the cable joint.

[0067] The cable core material may be the raw material used to make the cable core of the current cable, such as copper, aluminum, and aluminum alloy. Different core materials have different thermal conductivity, that is, under the same other conditions, the temperature of cable joints with different core materials is different.

[0068] The core diameter can be the diameter of the cross-sectional circle of the cable core. Under the same conditions, the larger the core diameter of the cable, the smaller the resistance will be. Smaller resistance generates less Joule heat when current passes through, which helps to reduce the temperature at the joint.

[0069] The way to obtain the working parameters of the cable can be to install the Hall effect sensor around the cable, as close to the cable as possible but not touching the cable. Generally speaking, you can choose to measure on the straight section of the cable to ensure the uniformity of the magnetic field. Power on the cable to put it in working condition. Read the magnetic field strength signal output by the Hall effect sensor. According to the sensitivity of the sensor and the unit of the output signal, the magnetic field strength can be converted to the actual magnetic field strength value. According to the relationship between the magnetic field and the current, the current in the cable can be calculated. The formula can be used:

[0070] B = kI;

[0071] Where B is the magnetic field strength, k is the proportionality coefficient, and I is the current. The current size can be calculated by the proportionality coefficient. The proportionality coefficient can be determined from the instruction manual of the Hall sensor.

[0072] The physical parameters of the cable can be obtained by the staff inputting the cable model, and the intelligent terminal searches for the physical parameters corresponding to the cable model through big data, extracting the cable core material and core diameter values ​​for storage.

[0073] The environmental parameter acquisition module 102 may be a temperature sensor and a wind speed sensor, which may be arranged in the environment where the cable connector is located, and is used to collect environmental data at the location where the cable is located. Specifically, the ambient temperature may be acquired in such a way that when the ambient temperature at the location where the cable is located changes, the resistance value of the thermal resistor in the temperature sensor changes with the temperature change, thereby causing a change in the electrical signal of the circuit where the thermal resistor is located, and the electrical signal is recorded, so that the change in the ambient temperature value can be reflected through the electrical signal.

[0074] The way to obtain the ambient wind speed is that when the wind blows at the location where the cable is located, the wind cup in the wind speed sensor will be blown by the wind to rotate, and the rotation speed of the wind cup is obtained, that is, the rotation speed of the wind cup is converted into an electrical signal output. For example, the rotation speed of the wind cup can be determined by detecting the number of times the mark or hole on the wind cup passes. When the wind cup rotates, the mark or hole will pass through the rotation speed detection module in turn, and the module will generate a pulse signal. By measuring the frequency of the pulse signal, the rotation speed of the wind cup can be determined. The signal processing circuit can convert the electrical signal into a wind speed value based on the relationship between the rotation speed of the wind cup and the wind speed, and the ambient wind speed can be obtained.

[0075] The temperature monitoring threshold acquisition module 103 can enable the intelligent terminal to generate a program design for the temperature monitoring threshold of the cable joint position. Specifically, the temperature control model can be a learning model that can predict the temperature monitoring threshold of the cable joint position through the working parameters, physical parameters of the cable and the environmental parameters of the cable laying position.

[0076] The temperature monitoring threshold can be the maximum temperature value that the cable joint can withstand while ensuring the normal operation of the cable, or the minimum temperature value when the cable joint is abnormal. When the temperature data detected by the temperature sensor installed at the cable joint position is greater than the temperature monitoring threshold, an early warning message indicating that the cable joint is abnormal is generated. Since the temperature of the cable joint is affected by environmental parameters and cable parameters, the temperature monitoring threshold of the cable joint in different seasons or installed in different cables is different.

[0077] The method for determining the temperature monitoring threshold at the cable joint location is to input the acquired working parameters and physical parameters of the current cable and the environmental parameters of the cable laying location into a pre-built temperature control model, and the temperature control model outputs the temperature monitoring threshold corresponding to the current working parameters, physical parameters and environmental parameters based on the pre-learned correlation between the working parameters, physical parameters and environmental parameters and the temperature monitoring threshold of the cable joint.

[0078] The temperature monitoring threshold synchronization module 104 may be a program design for the intelligent terminal to update the temperature monitoring threshold of the target temperature sensor. Specifically, the target temperature sensor may be a temperature sensor for detecting a cable joint for which the temperature monitoring threshold needs to be adjusted. The target temperature sensor is different from the ambient temperature sensor in that it contacts the cable joint, thereby more accurately measuring the temperature value of the cable joint.

[0079] The method for synchronizing the temperature monitoring threshold to the target sensor is that the intelligent terminal queries the communication address of the target temperature sensor set at the cable joint through the cable joint position, and sends the currently acquired temperature monitoring threshold to the communication address. After the target temperature sensor receives it, it overwrites the original temperature monitoring threshold with the current temperature monitoring threshold, thereby achieving the coverage of the temperature monitoring threshold.

[0080] Based on the above solution, optionally, the temperature monitoring threshold acquisition module is further used to:

[0081] Acquire abnormal temperature data of cable joints under different working parameters, physical parameters and environmental parameters in advance, and generate training samples and test samples based on the acquired data;

[0082] Performing supervised training on the training samples to build a temperature control model;

[0083] The temperature control model is tested using the test sample, and when the test result meets the preset requirement, it is determined that the construction of the temperature control model is completed.

[0084] A training sample can be a data set used to train a machine learning model. The training sample contains input features and corresponding target outputs.

[0085] Test samples can be a data set 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.

[0086] Supervised training can be a machine learning method in which the model's task is to learn the mapping from input features to target outputs.

[0087] The preset requirement may be a pre-set requirement for the accuracy of the test results of the temperature control model. For example, when the accuracy of the temperature control model reaches 99%, it is determined that the temperature control model is completed and can be put into use.

[0088] The method for generating training samples and test samples is to obtain multiple groups of cables with different working parameters, physical parameters and environmental parameters in advance, perform power-on detection on the cables, and record abnormal temperature data of the cable joints when abnormalities occur. The acquired abnormal temperature data and the corresponding cable working parameters, physical parameters and environmental parameters are divided into two groups, one of which is used as training samples and the other is used as test samples.

[0089] The supervised training method for training samples can be to organize the training samples to ensure the quality and integrity of the data; select the machine learning model that best fits the training samples, such as linear regression, decision tree, neural network, etc.; input the training samples into the selected model, and adjust the parameters of the model through the optimization algorithm to minimize the prediction error of the model on the training samples, that is, the model can be used to obtain the value closest to the abnormal temperature data in the training samples.

[0090] The temperature control model can be tested by using test samples to evaluate the trained model and calculate the performance indicators of the model, that is, input the working parameters, physical parameters and environmental parameters in the test samples into the temperature control model, and calculate the error between the output of the temperature control model and the abnormal temperature data. According to the test results, the model is adjusted and optimized, for example, the structure of the model is adjusted, training data is added, and parameters are adjusted. The temperature control model is determined to be completed until the test results meet the preset requirements.

[0091] The advantage of this setting of the scheme is that the temperature monitoring thresholds of different cables or cables at different temperatures can be determined through the temperature control model, making the acquisition of temperature monitoring thresholds more intelligent and improving the accuracy of abnormality detection at cable joints.

[0092] Based on the above solution, optionally, the temperature monitoring threshold acquisition module is specifically used to:

[0093] Conduct power-on detection on cables with different working parameters, physical parameters, and environmental parameters in advance, record the temperature data changes when there are abnormalities in the cable joints, and use the lowest temperature as the abnormal temperature data to generate training samples and test samples;

[0094] The abnormal temperature data in the training sample is used as a label, and the working parameter, the physical parameter and the environmental parameter are used as input variables to perform supervised training and build a temperature control model.

[0095] The method for obtaining abnormal temperature data can be to obtain multiple groups of cables with different working parameters, physical parameters and environmental parameters in advance, perform power-on detection on the cables, and record the changes in temperature data of the cable joints when an abnormality occurs, analyze the obtained temperature data, and select the lowest temperature data as the abnormal temperature data.

[0096] The temperature control model can be constructed by using the abnormal temperature data in the training samples as labels and the corresponding working parameters, physical parameters and environmental parameters as input variables for supervised training, so that the temperature control model can adjust the parameters of the temperature control model by learning the correlation between the abnormal temperature data and the working parameters, physical parameters and environmental parameters, so as to accurately predict new unknown data.

[0097] The advantage of this arrangement of the present invention is that the lowest temperature data when the cable joint is abnormal can be used as abnormal temperature data, which is beneficial to improve the sensitivity of the abnormal warning of the temperature sensor and provide more solution time for the staff to deal with abnormal problems.

[0098] This solution provides a program code for predicting the temperature monitoring threshold through the temperature control model for reference:

[0099] import numpy as np

[0100] from sklearn.model_selection import train_test_split

[0101] from sklearn.ensemble import RandomForestRegressor

[0102] #Function to obtain cable parameters and environmental parameters

[0103] def get_cable_parameters():

[0104] work_current=np.random.randint(10,100)

[0105] cable_material = np.random.choice(['copper', 'aluminum'])

[0106] core_diameter = np.random.randint(1, 10)

[0107] env_temperature = np.random.randint(0, 40)

[0108] env_wind_speed = np.random.randint(0, 20)

[0109] return work_current, cable_material, core_diameter, env_temperature, env_wind_speed

[0110] # Function to obtain abnormal temperature data of cable joints

[0111] def get_abnormal_temperature_data(num_samples):

[0112] data = []

[0113] for _ in range(num_samples):

[0114] work_current, cable_material, core_diameter, env_temperature, env_wind_speed = get_cable_parameters()

[0115] abnormal_temperature = np.random.randint(50, 150)

[0116] data.append([work_current, cable_material, core_diameter, env_temperature, env_wind_speed, abnormal_temperature])

[0117] return np.array(data)

[0118] # Build a temperature control model

[0119] def build_temperature_control_model(data):

[0120] X=data[:,:-1]

[0121] y=data[:,-1]

[0122] #Encode the cable material

[0123] cable_materials=np.unique(X[:,1])

[0124] cable_material_encoding={material:i for i,material in enumerate(cable_materials)}

[0125] X[:,1]=np.array([cable_material_encoding[material]for material in X[:,1]])

[0126] X_train,X_test,y_train,y_test=train_test_split(X,y,test_size=0.2,random_state=42)

[0127] model=RandomForestRegressor()

[0128] model.fit(X_train,y_train)

[0129] test_score=model.score(X_test,y_test)

[0130] if test_score>=0.8:#Preset requirement, can be adjusted according to actual situation

[0131] return model

[0132] else:

[0133] return None

[0134] #Get the temperature monitoring threshold based on the input parameters

[0135] def get_temperature_threshold(model, work_current, cable_material, core_diameter, env_temperature, env_wind_speed):

[0136] encoded_cable_material = cable_material_encoding[cable_material]

[0137] input_data = np.array([[work_current, encoded_cable_material, core_diameter, env_temperature, env_wind_speed]])

[0138] predicted_threshold = model.predict(input_data)

[0139] return predicted_threshold[0]

[0140] # Main program

[0141] data = get_abnormal_temperature_data(1000)

[0142] model = build_temperature_control_model(data)

[0143] if model:

[0144] work_current, cable_material, core_diameter, env_temperature, env_wind_speed = get_cable_parameters()

[0145] temperature_threshold = get_temperature_threshold(model, work_current, cable_material, core_diameter, env_temperature, env_wind_speed)

[0146] print(f"Temperature monitoring threshold: {temperature_threshold}")

[0147] In the embodiment of the present application, the cable parameter acquisition module is used to obtain 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 the core diameter; the environmental parameter acquisition module is used to obtain the environmental parameters of the cable; wherein the environmental parameters include the ambient temperature and the 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 the temperature monitoring threshold of the cable joint position according to the output result of the temperature control model; the temperature monitoring threshold synchronization module is used to synchronize the temperature monitoring threshold to the target temperature sensor. Through the above-mentioned automatic setting device of the cable joint temperature threshold, the intelligent monitoring of the temperature at the cable joint can be realized by dynamically monitoring the temperature of the cable joint, thereby improving the accuracy of abnormal warning, avoiding the misidentification and generation of erroneous information, and causing invalid inspections by staff.

[0148] Embodiment 2

[0149] Figure 2 It is a structural diagram of the automatic setting device of the cable joint temperature threshold provided in the second embodiment of the present application. This scheme makes a better improvement on the above embodiment, and the specific improvement is: the environmental parameter acquisition module is also used to: re-acquire the temperature monitoring threshold when it is identified that the change of the environmental temperature data exceeds the set threshold; correspondingly, the temperature monitoring threshold synchronization module is also used to: synchronize the updated temperature monitoring threshold to the target temperature sensor.

[0150] like Figure 2 As shown, specifically including the following:

[0151] 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;

[0152] The environmental parameter acquisition module 202 is used to acquire the environmental parameters of the cable; wherein the environmental parameters include the ambient temperature and the ambient wind speed;

[0153] 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 at the cable joint position according to the output result of the temperature control model;

[0154] The temperature monitoring threshold synchronization module 204 is used to synchronize the temperature monitoring threshold to the target temperature sensor.

[0155] The environmental parameter acquisition module 202 is further configured to reacquire the temperature monitoring threshold when it is identified that the change of the environmental temperature data exceeds a set threshold;

[0156] Correspondingly, the temperature monitoring threshold synchronization module 204 is also used to synchronize the updated temperature monitoring threshold to the target temperature sensor.

[0157] To set a threshold, in actual conditions, the ambient temperature of the cable laying location may fluctuate slightly, and this fluctuation will not have a significant impact on the temperature monitoring threshold. However, 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 used as the set threshold. When the ambient temperature changes beyond the set threshold, the temperature monitoring threshold is updated.

[0158] The method for reacquiring the temperature monitoring threshold is that the environmental parameter acquisition module calculates the difference between the acquired temperature data and the temperature data acquired last time. When the difference reaches the set threshold, the current environmental parameters are sent to the temperature monitoring threshold acquisition module, so that the module reacquires the temperature monitoring threshold according to the changed temperature.

[0159] The updated temperature monitoring threshold is synchronized to the target temperature sensor, so that the temperature monitoring threshold acquisition module reacquires the temperature monitoring threshold and then sends the temperature monitoring threshold to the target temperature sensor, so that the target temperature sensor updates the temperature monitoring threshold being used.

[0160] The benefit of this setting of the scheme is that it can avoid the problem of frequent changes in temperature monitoring thresholds due to normal temperature fluctuations, which is conducive to ensuring the stability of the cable joint temperature anomaly detection program.

[0161] Embodiment 3

[0162] Figure 3 It is a structural diagram of the automatic setting device of the cable joint temperature threshold provided in the third embodiment of the present application. This scheme makes a better improvement on the above embodiment, and the specific improvement is: the device also includes: an update cycle determination module, which is used to determine the acquisition cycle of the cable working parameters according to the operating status of the cable in different periods; when it is identified that the working current of the cable has changed, the temperature monitoring threshold is re-acquired; accordingly, the temperature monitoring threshold synchronization module is also used to: synchronize the updated temperature monitoring threshold to the target temperature sensor.

[0163] like Figure 3 As shown, specifically including the following:

[0164] The cable parameter acquisition module 301 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;

[0165] The environmental parameter acquisition module 302 is used to acquire the environmental parameters of the cable; wherein the environmental parameters include the ambient temperature and the ambient wind speed;

[0166] 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 at the cable joint position according to the output result of the temperature control model;

[0167] A temperature monitoring threshold synchronization module 304 is used to synchronize the temperature monitoring threshold to a target temperature sensor;

[0168] An update cycle determination module 305, used to determine the acquisition cycle of the cable working parameters according to the operating status of the cable at different periods;

[0169] When a change in the operating current of the cable is detected, the temperature monitoring threshold value is re-determined.

[0170] The temperature monitoring threshold synchronization module 304 is further used to synchronize the updated temperature monitoring threshold to the target temperature sensor.

[0171] The method for determining the acquisition cycle of the cable working parameters can collect the operating status of the cable in different periods such as the initial investment, stable operation period and aging period, and determine the acquisition cycle of the cable in each period according to the current stability and fault frequency of the cable in different periods. For example, the performance of the cable is relatively stable in the initial investment, and the failure rate is low. The working parameters can be obtained once a week or every half a month; the operating state of the cable is relatively stable during the stable operation period, and the working parameters can be obtained once a month or every two months. Since the failure rate of the cable is high during the aging period, the working parameters can be obtained once a day or a week. Obtain the period in which the current cable is currently located, and use the corresponding detection period as the acquisition period. In this scheme, the current change law during the peak and trough periods of user electricity consumption can also be taken into account, and the acquisition cycle can be slightly adjusted during the peak and trough periods of electricity consumption.

[0172] The method of reacquiring the temperature monitoring threshold value allows the cable parameter acquisition module to collect the working current of the cable according to the regularity of the acquisition cycle, and compare the current working current with the previous working current. If the current value changes, the current is sent to the temperature monitoring threshold acquisition module, so that the module can reacquire the temperature monitoring threshold according to the changed current.

[0173] The benefit of this arrangement of the scheme is that the corresponding temperature monitoring threshold can be updated in time when the working parameters of the cable change, which is conducive to realizing intelligent monitoring of the temperature at the cable joint and improving the accuracy of abnormal warning.

[0174] Embodiment 4

[0175] Figure 4 This is a schematic diagram of the structure of the automatic setting device for the temperature threshold of the cable joint provided in the fourth embodiment of the present application. This solution makes a better improvement on the above embodiment, and the specific improvement is: the device also includes: an aging degree determination module, which is used to obtain the use time of the cable and determine the aging degree of the cable insulation layer according to the use time; accordingly, the temperature monitoring threshold acquisition module is also used to: adjust the temperature monitoring threshold of the cable according to the aging degree.

[0176] like Figure 4 As shown, specifically including the following:

[0177] The cable parameter acquisition module 401 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;

[0178] The environmental parameter acquisition module 402 is used to acquire the environmental parameters of the cable; wherein the environmental parameters include the ambient temperature and the ambient wind speed;

[0179] 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 at the cable joint position according to the output result of the temperature control model;

[0180] A temperature monitoring threshold synchronization module 404 is used to synchronize the temperature monitoring threshold to a target temperature sensor;

[0181] The aging degree determination module 405 is used to obtain the usage time of the cable and determine the aging degree of the insulation layer of the cable according to the usage time.

[0182] The temperature monitoring threshold acquisition module 403 is further used to adjust the temperature monitoring threshold of the cable according to the aging degree.

[0183] The usage time can be the total time from cable laying or starting to use to the current time node.

[0184] The cable insulation layer can insulate the conductors in the cable from the surrounding environment or adjacent conductors, ensuring that the current or electromagnetic waves and light waves transmitted by the conductor core only propagate along the wire and do not flow to the outside world, while ensuring the safety of external objects and personnel.

[0185] The method for determining the aging degree of the cable insulation layer is that the intelligent terminal can obtain the laying time of the current cable in the cable laying record, and 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 according to big data as the aging degree of the current cable insulation layer.

[0186] The method for adjusting the temperature monitoring threshold is that after obtaining the aging degree of the cable insulation layer, the intelligent terminal obtains the tolerance temperature value corresponding to the insulation layer under the current aging degree through big data. When 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.

[0187] The advantage of this arrangement of the present invention is that it can also take into account the impact of insulation layer aging on temperature warning when the cable is in use for a long time, to prevent the insulation layer from being damaged or causing a fire due to being unable to withstand the temperature generated by the cable, which is beneficial to maintaining the safe operation of the cable.

[0188] Embodiment 5

[0189] Figure 5 It is a structural schematic diagram of the automatic setting device of the cable joint temperature threshold provided in Example 5 of the present application. This scheme makes a better improvement on the above-mentioned embodiment, and the specific improvement is: the device also includes: a joint type acquisition module, which is used to obtain the joint type of the cable; wherein the joint type includes a heat shrink joint, a cold shrink joint and a bolted joint; correspondingly, the temperature monitoring threshold acquisition module is used to input the working parameters, the physical parameters, the environmental parameters and the joint type into the temperature control model, and generate the temperature monitoring threshold of the cable joint position according to the output result of the temperature control model.

[0190] like Figure 5 As shown, specifically including the following:

[0191] 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;

[0192] The environmental parameter acquisition module 502 is used to acquire the environmental parameters of the cable; wherein the environmental parameters include the ambient temperature and the ambient wind speed;

[0193] 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 at the cable joint position according to the output result of the temperature control model;

[0194] A temperature monitoring threshold synchronization module 504 is used to synchronize the temperature monitoring threshold to a target temperature sensor;

[0195] The connector type acquisition module 505 is used to acquire the connector type of the cable; wherein the connector type includes a heat shrink connector, a cold shrink connector and a bolted connector.

[0196] 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 position according to the output result of the temperature control model.

[0197] The heat shrink joint can be made at the end of the cable where a cable joint is required. The cable sheath is peeled off, a special heat shrink head is put on, and then each core of the cable is connected. The heat shrink head sleeve is then put on the joint position, and the heat shrink head at the joint position is heated with a blowtorch or other heating equipment so that the heat shrink head adheres to the cable to form a cable joint.

[0198] Cold shrink joints can be formed by injection vulcanization of elastomeric materials (commonly used are silicone rubber and EPDM rubber) in the factory, and then expanded and lined with plastic spiral supports to form various cable accessories. During on-site installation, these pre-expanded parts are put on the treated cable ends or joints, and the internal supporting plastic spiral strips (supports) are pulled out and pressed against the cable insulation to form cable accessories. Because it relies on elastic retraction force at room temperature, rather than heat shrink cable accessories that need to be heated and shrunk by fire, it is commonly known as a cold shrink joint.

[0199] Bolted connectors can refer to threaded connectors. Bolted connectors make cable connections simpler and easier to disassemble and replace, greatly saving connection costs.

[0200] The method of obtaining the connector type of the cable may be that the staff selects or inputs the connector type of the current cable through the terminal device, and the intelligent terminal receives and stores it.

[0201] The method for generating the temperature monitoring threshold of the cable joint position can be to obtain the temperature monitoring threshold corresponding to the cables with different working parameters, physical parameters, environmental parameters and joint types in advance, use the temperature monitoring threshold as a label, and the working parameters, physical parameters, environmental parameters and joint types as input variables to perform supervised training to update the original temperature control model. The obtained working parameters, physical parameters and joint type of the current cable and the environmental parameters of the cable laying position are input into the updated temperature control model, and the temperature control model outputs the temperature monitoring threshold corresponding to the current working parameters, physical parameters, environmental parameters and joint type according to the association between the pre-learned working parameters, physical parameters, environmental parameters and joint type and the temperature monitoring threshold of the cable joint.

[0202] The advantage of this setting of the scheme is that it can take into account the influence of the cable joint type on the temperature monitoring threshold, so that the determination of the temperature monitoring threshold is more in line with the actual situation, which is conducive to increasing the accuracy of the cable joint abnormal warning.

[0203] Embodiment 6

[0204] Figure 6 It is a flow chart of the method for automatically setting the temperature threshold of a cable connector provided in Example 6 of the present application.

[0205] like Figure 6 As shown, the specific steps include:

[0206] S601, obtaining working parameters and physical parameters of the cable; wherein the working parameters include working current, and the physical parameters include cable core material and core diameter;

[0207] S602, obtaining environmental parameters of the cable; wherein the environmental parameters include ambient temperature and ambient wind speed;

[0208] S603, inputting the working parameter, the physical parameter and the environmental parameter into a pre-built temperature control model, and generating a temperature monitoring threshold value at a cable joint position according to an output result of the temperature control model;

[0209] S604: Synchronize the temperature monitoring threshold to the target temperature sensor.

[0210] Based on the above solution, optionally, the environmental parameters of the cable are obtained, including:

[0211] When it is identified that the change of the ambient temperature data exceeds a set threshold, re-obtaining the temperature monitoring threshold;

[0212] Accordingly, synchronizing the temperature monitoring threshold to the target temperature sensor includes:

[0213] Synchronize the updated temperature monitoring threshold to the target temperature sensor.

[0214] In an embodiment of the present application, the working parameters and physical parameters of the cable are obtained; wherein the working parameters include the working current, and the physical parameters include the cable core material and the core diameter; the environmental parameters of the cable are obtained; wherein the environmental parameters include the ambient temperature and the ambient wind speed; the working parameters, the physical parameters and the environmental parameters are input into a pre-built temperature control model, and a temperature monitoring threshold value of the cable joint position is generated according to the output result of the temperature control model; the temperature monitoring threshold value is synchronized to the target temperature sensor. Through the above-mentioned automatic setting method of the cable joint temperature threshold value, the temperature at the cable joint can be intelligently monitored by dynamically monitoring the temperature of the cable joint, thereby improving the accuracy of abnormal warnings, avoiding misidentification and generating erroneous information, and causing invalid inspections by staff.

[0215] The method for automatically setting the temperature threshold of a cable joint provided in an embodiment of the present application corresponds to the device for automatically setting the temperature threshold of a cable joint provided in the above embodiment, and has the same functional modules and beneficial effects. To avoid repetition, they will not be described here.

[0216] Embodiment 7

[0217] like Figure 7 As shown, an embodiment of the present application also provides an electronic device 700, including a processor 701, a memory 702, and a program or instruction stored in the memory 702 and executable on the processor 701. When the program or instruction is executed by the processor 701, each process of the embodiment of the automatic setting device for the temperature threshold of the cable connector described above is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be described here.

[0218] It should be noted that the electronic devices in the embodiments of the present application include the mobile electronic devices and non-mobile electronic devices mentioned above.

[0219] Embodiment 8

[0220] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the various processes of the above-mentioned embodiment of the automatic setting device for the temperature threshold of the cable connector are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0221] The processor is a processor in the electronic device described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0222] Embodiment 9

[0223] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned embodiment of the automatic setting device for the cable connector temperature threshold, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0224] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0225] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0226] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM / RAM, a disk, or an optical disk), and includes a number of instructions for a terminal (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present application.

[0227] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

[0228] The above are only preferred embodiments of the present application and the technical principles used. The present 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 deviate from the scope of protection of the present application. Therefore, although the present application is described in more detail through the above embodiments, the present application is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the claims.

Claims

1. A device for automatically setting a temperature threshold of a cable joint, characterized in that: The device comprises: A cable parameter acquisition module, 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; An environmental parameter acquisition module, used to acquire environmental parameters of the cable; wherein the environmental parameters include ambient temperature and ambient wind speed; A temperature monitoring threshold acquisition module, 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 at a cable joint position according to an output result of the temperature control model; The temperature monitoring threshold synchronization module is used to synchronize the temperature monitoring threshold to the target temperature sensor.

2. The device for automatically setting the temperature threshold of a cable joint according to claim 1, characterized in that: The environmental parameter acquisition module is also used for: When it is identified that the change of the ambient temperature data exceeds a set threshold, re-obtaining the temperature monitoring threshold; Correspondingly, the temperature monitoring threshold synchronization module is also used for: Synchronize the updated temperature monitoring threshold to the target temperature sensor.

3. The device for automatically setting the temperature threshold of a cable joint according to claim 1, characterized in that: The device also includes: An update cycle determination module, used to determine the acquisition cycle of the cable working parameters according to the operating status of the cable at different periods; reacquiring a temperature monitoring threshold value when a change in the operating current of the cable is detected; Correspondingly, the temperature monitoring threshold synchronization module is also used for: Synchronize the updated temperature monitoring threshold to the target temperature sensor.

4. The device for automatically setting the temperature threshold of a cable joint according to claim 1, characterized in that: The temperature monitoring threshold acquisition module is also used for: Acquire abnormal temperature data of cable joints under different working parameters, physical parameters and environmental parameters in advance, and generate training samples and test samples based on the acquired data; Performing supervised training on the training samples to build a temperature control model; The temperature control model is tested using the test sample, and when the test result meets the preset requirement, it is determined that the construction of the temperature control model is completed.

5. The device for automatically setting the temperature threshold of a cable joint according to claim 4, characterized in that: The temperature monitoring threshold acquisition module is specifically used for: Conduct power-on detection on cables with different working parameters, physical parameters, and environmental parameters in advance, record the temperature data changes when there are abnormalities in the cable joints, and use the lowest temperature as the abnormal temperature data to generate training samples and test samples; The abnormal temperature data in the training sample is used as a label, and the working parameter, the physical parameter and the environmental parameter are used as input variables to perform supervised training and build a temperature control model.

6. The device for automatically setting the temperature threshold of a cable joint according to claim 1, characterized in that: The device also includes: An aging degree determination module is used to obtain the usage time of the cable and determine the aging degree of the insulation layer of the cable according to the usage time; Correspondingly, the temperature monitoring threshold acquisition module is also used for: The temperature monitoring threshold of the cable is adjusted according to the aging degree.

7. The device for automatically setting the temperature threshold of a cable joint according to claim 1, characterized in that: The device also includes: A connector type acquisition module, used to acquire the connector type of the cable; wherein the connector type includes a heat shrink connector, a cold shrink connector, and a bolted 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 position according to the output result of the temperature control model.

8. A method for automatically setting a temperature threshold of a cable joint, characterized in that: The method comprises: Obtaining 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; Acquire environmental parameters of the cable; wherein the environmental parameters include ambient temperature and ambient wind speed; Inputting the working parameters, the physical parameters and the environmental parameters into a pre-built temperature control model, and generating a temperature monitoring threshold value at a cable joint position according to an output result of the temperature control model; The temperature monitoring threshold is synchronized to a target temperature sensor.

9. The method for automatically setting the temperature threshold of a cable joint according to claim 8, characterized in that: Obtain the environmental parameters of the cable, including: When it is identified that the change of the ambient temperature data exceeds a set threshold, re-obtaining the temperature monitoring threshold; Accordingly, synchronizing the temperature monitoring threshold to the target temperature sensor includes: Synchronize the updated temperature monitoring threshold to the target temperature sensor.

10. An electronic device, characterized in that: It comprises a processor, a memory and a program or instruction stored in the memory and executable on the processor, wherein when the program or instruction is executed by the processor, the steps of the method for automatically setting the temperature threshold of a cable joint as described in any one of claims 8 to 9 are implemented.

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