Cable moisture detection method, device, storage medium and electronic device

Abstract

The present application discloses a cable moisture detection method, device, storage medium and electronic device, and relates to the field of power cable technology. The method comprises: obtaining a first target temperature and a second target temperature of a target cable, wherein the target cable comprises a first cable conductor, a second cable conductor, a cable intermediate joint and an outer sheath, and a temperature rise ring is disposed on the first cable conductor, and the temperature rise ring is used to increase the thermal conductivity of the first cable conductor when the target cable is in a damp state; determining a first temperature difference between the first target temperature and the first initial temperature, and determining a second temperature difference between the first target temperature and the second target temperature; performing moisture detection on the target cable based on the first temperature difference and the second temperature difference to obtain a detection result. The present application solves the technical problem that the related art is inaccurate in cable moisture detection and cannot know the specific state of cable moisture.

Description

Technical Field

[0001] The present application relates to the technical field of power cables, and in particular to a method, device, storage medium and electronic device for detecting moisture in cables. Background Art

[0002] Power cable is a cable used to transmit electric power. It is usually composed of a conductor, an insulation layer, an outer sheath and other parts. It can be used in power transmission lines, transformer connecting lines, cable tunnels and other occasions. It is an indispensable part of the power system and is usually widely used in transmission and distribution networks as a carrier for electric energy transmission.

[0003] Cables laid in cable trenches and channels are usually in a humid and waterlogged environment for a long time. Among them, the cable intermediate joint is the weak link in waterproofing in the running cable. The cable intermediate joint is a cable joint in the middle of the cable line. It is an accessory for connecting cables and is used to connect cables to equipment or other cables. The damage of the outer sheath of the cable intermediate joint can easily cause the cable insulation layer and conductor to be damp. The cable intermediate joint after being damp is difficult to detect. The cable insulation (the material used to wrap the wire or cable conductor, its main function is to prevent the current from short-circuiting or leaking between the conductors and protect the conductor from the external environment) that has been damp for a long time will form water tree aging (the tiny bubbles or crystals in the cable insulation material gradually increase or expand during long-term use, resulting in a decrease in insulation performance, thereby affecting the safety and reliability of the cable) under factors such as moisture, electrical stress, and mechanical stress, providing conditions for the formation of discharge channels. If the cable insulation is not maintained and replaced in time, it will eventually cause the cable insulation to be broken down by the current, causing phase-to-phase or ground short-circuit faults in the cable line, which may damage the insulation material, reduce insulation performance, and increase the risk of leakage. At the same time, a humid environment can easily cause corrosion to the conductors inside the cable connectors, affecting the conductivity and even causing equipment damage, shortening the service life of the equipment, increasing maintenance costs, and endangering the safety of the power network.

[0004] The main technical means for detecting moisture in cable intermediate joints in the prior art are:

[0005] 1) Oscillation wave partial discharge detection. Although oscillation wave partial discharge detection can detect abnormal discharge signals when the joint is seriously water-infiltrated, it cannot locate the joint through oscillation wave partial discharge detection. In addition, it is not easy to detect when the joint is slightly damp. This technical means has great limitations in the detection of water-infiltrated defects in joints.

[0006] 2) Ultra-low frequency dielectric loss. Ultra-low frequency dielectric loss is highly sensitive to water ingress defects in cable accessories. Its detection capability can meet the detection requirements of the distribution cable line status, but it is necessary to strengthen historical data and horizontal data comparison to improve the detection capability of potential defects and hidden dangers, so there is a problem of requiring a lot of data.

[0007] 3) Wideband impedance spectrum detection and harmonic component detection. Wideband impedance spectrum detection and harmonic component detection technology can characterize the defect degradation trend. Compared with ultra-low frequency dielectric loss, wideband impedance spectrum detection can more accurately locate the water ingress defect. However, the research on this method is still in its infancy, and its stability needs further in-depth research.

[0008] 4) Pulse propagation characteristic analysis method. This method can detect whether the cable has moisture defects, but it is difficult to obtain specific information such as the size and penetration depth of the defects in the cable.

[0009] To address the above-mentioned problems, no effective solution has been proposed yet. Summary of the invention

[0010] The embodiments of the present application provide a cable moisture detection method, device, storage medium and electronic device to at least solve the technical problems in the related art of inaccurate cable moisture detection and inability to know the specific moisture status of the cable.

[0011] According to one embodiment of the present application, a cable moisture detection method is provided. The method may include: obtaining a first target temperature and a second target temperature of a target cable, wherein the target cable includes a first cable conductor, a second cable conductor, a cable intermediate joint and an outer sheath, a temperature rise ring is disposed on the first cable conductor, and the temperature rise ring is used to increase the thermal conductivity of the first cable conductor when the target cable is in a damp state, the first cable conductor and the second cable conductor are connected through the cable intermediate joint, and the outer sheath is wrapped around the outside of the first cable conductor and the second cable conductor, the first target temperature is the target temperature of the outer sheath corresponding to the first cable conductor, and the second target temperature is the target temperature of the outer sheath corresponding to the second cable conductor; determining a first temperature difference between the first target temperature and the first initial temperature, and determining a second temperature difference between the first target temperature and the second target temperature, wherein the first initial temperature is the temperature of the outer sheath corresponding to the first cable conductor when the target cable transmits a preset rated current; performing moisture detection on the target cable based on the first temperature difference and the second temperature difference to obtain a detection result.

[0012] Optionally, the target cable is detected for moisture based on the first temperature difference and the second temperature difference, and the detection results include: in response to the first temperature difference being greater than a first threshold and the second temperature difference being greater than a second threshold, a first detection result is obtained, wherein the first detection result indicates that the moisture level of the target cable is a first level; in response to the first temperature difference being greater than a third threshold and the second temperature difference being greater than a fourth threshold, a second detection result is obtained, wherein the second detection result indicates that the moisture level of the target cable is a second level, and the second level has a higher degree of moisture than the first level.

[0013] Optionally, before determining a first temperature difference between the first target temperature and the first initial temperature, and determining a second temperature difference between the first target temperature and the second target temperature, the method further includes: in response to the target cable transmitting a preset rated current, obtaining a first initial temperature of the outer sheath corresponding to the first cable conductor and a second initial temperature of the outer sheath corresponding to the second cable conductor.

[0014] Optionally, the target cable is tested for moisture based on the first temperature difference and the second temperature difference to obtain a test result, including: determining the temperature difference between the second target temperature and the second initial temperature to obtain a third temperature difference; and the target cable is tested for moisture based on the first temperature difference, the second temperature difference and the third temperature difference to obtain a test result.

[0015] Optionally, the target cable is detected for moisture based on the first temperature difference, the second temperature difference and the third temperature difference, and the detection results include: in response to the first temperature difference being greater than the fifth threshold value, the second temperature difference being greater than the sixth threshold value, and the third temperature difference being greater than the seventh threshold value, a third detection result is obtained, wherein the third detection result indicates that the moisture level of the target cable is the third level; in response to the first temperature difference being greater than the eighth threshold value, the second temperature difference being greater than the ninth threshold value, and the third temperature difference being greater than the tenth threshold value, a fourth detection result is obtained, wherein the fourth detection result indicates that the moisture level of the target cable is the fourth level, and the fourth level of moisture is higher than the third level of moisture.

[0016] Optionally, acquiring the first target temperature and the second target temperature of the target cable includes: acquiring the first target temperature and the second target temperature based on a preset time interval.

[0017] Optionally, the method further includes: displaying the detection result on a display.

[0018] Optionally, the method further includes: maintaining or replacing the target cable based on the detection result.

[0019] According to one embodiment of the present application, a cable moisture detection device is also provided. The cable moisture detection device includes a display, a processor, a temperature rise sensor and a target cable to be detected, the display is used to display the moisture degree of the target cable, the processor is used to calculate the temperature difference of the outer sheath of the target cable and analyze the moisture degree of the target cable, the temperature rise sensor includes a temperature rise ring and a thermocouple, the thermocouple is used to collect the temperature of the outer sheath of the target cable, the target cable includes a first cable conductor, a second cable conductor, a cable intermediate joint and an outer sheath, the first cable conductor and the second cable conductor are connected through the cable intermediate joint, a temperature rise ring is deployed on the first cable conductor, the temperature rise ring is used to increase the thermal conductivity of the first cable conductor when the target cable is in a damp state, and the outer sheath is wrapped around the outside of the first cable conductor and the second cable conductor.

[0020] According to one embodiment of the present application, a cable moisture detection device is also provided. The device includes: an acquisition module, which is used to acquire a first target temperature and a second target temperature of a target cable, wherein the target cable includes a first cable conductor, a second cable conductor, a cable intermediate joint and an outer sheath, a temperature rise ring is disposed on the first cable conductor, and the temperature rise ring is used to increase the thermal conductivity of the first cable conductor when the target cable is in a damp state, the first cable conductor and the second cable conductor are connected through the cable intermediate joint, and the outer sheath is wrapped around the outside of the first cable conductor and the second cable conductor, the first target temperature is the target temperature of the outer sheath corresponding to the first cable conductor, and the second target temperature is the target temperature of the outer sheath corresponding to the second cable conductor; a determination module, which is used to determine a first temperature difference between the first target temperature and the first initial temperature, and to determine a second temperature difference between the first target temperature and the second target temperature, wherein the first initial temperature is the temperature of the outer sheath corresponding to the first cable conductor when the target cable transmits a preset rated current; a detection module, which is used to detect moisture on the target cable based on the first temperature difference and the second temperature difference to obtain a detection result.

[0021] Optionally, the detection module is also used to obtain a first detection result in response to the first temperature difference being greater than a first threshold value and the second temperature difference being greater than a second threshold value, wherein the first detection result indicates that the moisture level of the target cable is a first level; and to obtain a second detection result in response to the first temperature difference being greater than a third threshold value and the second temperature difference being greater than a fourth threshold value, wherein the second detection result indicates that the moisture level of the target cable is a second level, and the second level of moisture is higher than the first level.

[0022] Optionally, the detection module is further used to obtain a first initial temperature of the outer sheath corresponding to the first cable conductor and a second initial temperature of the outer sheath corresponding to the second cable conductor in response to the target cable transmitting a preset rated current.

[0023] Optionally, the detection module is further used to determine the temperature difference between the second target temperature and the second initial temperature to obtain a third temperature difference; based on the first temperature difference, the second temperature difference and the third temperature difference, perform moisture detection on the target cable to obtain a detection result.

[0024] Optionally, the detection module is also used to obtain a third detection result in response to the first temperature difference being greater than a fifth threshold value, the second temperature difference being greater than a sixth threshold value, and the third temperature difference being greater than a seventh threshold value, wherein the third detection result indicates that the moisture level of the target cable is a third level; and to obtain a fourth detection result in response to the first temperature difference being greater than an eighth threshold value, the second temperature difference being greater than a ninth threshold value, and the third temperature difference being greater than a tenth threshold value, wherein the fourth detection result indicates that the moisture level of the target cable is a fourth level, and the fourth level of moisture is higher than the third level of moisture.

[0025] Optionally, the detection module is further configured to obtain the first target temperature and the second target temperature based on a preset time interval.

[0026] Optionally, the device further includes: a display module, configured to display the detection result on a display.

[0027] Optionally, the device further includes: a processing module, configured to maintain or replace the target cable based on the detection result.

[0028] According to one embodiment of the present application, a computer-readable storage medium is also provided, which includes a stored executable program, wherein when the executable program is running, the device where the computer-readable storage medium is located is controlled to execute the cable moisture detection method in the embodiment of the present application.

[0029] According to one embodiment of the present application, a computer program product is also provided, including a computer program, and when the computer program is executed by a processor, the cable moisture detection method in the embodiment of the present application is implemented.

[0030] According to one embodiment of the present application, an electronic device is also provided, including a memory and a processor, wherein an executable program is stored in the memory, and the processor is used to run the program and is configured to run a computer program to execute the cable moisture detection method in the embodiment of the present application.

[0031] In an embodiment of the present application, a first target temperature and a second target temperature of a target cable are obtained, wherein the target cable includes a first cable conductor, a second cable conductor, a cable intermediate joint and an outer sheath, a temperature rise ring is disposed on the first cable conductor, and the temperature rise ring is used to increase the thermal conductivity of the first cable conductor when the target cable is in a damp state, the first cable conductor and the second cable conductor are connected through the cable intermediate joint, and the outer sheath is wrapped around the outside of the first cable conductor and the second cable conductor, the first target temperature is the target temperature of the outer sheath corresponding to the first cable conductor, and the second target temperature is the target temperature of the outer sheath corresponding to the second cable conductor; a first temperature difference between the first target temperature and the first initial temperature is determined, and a second temperature difference between the first target temperature and the second target temperature is determined, wherein the first initial temperature is the temperature of the outer sheath corresponding to the first cable conductor when the target cable transmits a preset rated current; based on the first temperature difference and the second temperature difference, the target cable is detected for moisture to obtain a detection result. In this way, it is possible to more accurately detect whether the cable is damp and the specific state of the defect, so that operation and maintenance personnel can promptly discover abnormal conditions of the cable, further ensuring the high-quality, safe and efficient operation of the cable, thereby solving the technical problems in related technologies of inaccurate detection of cable moisture and inability to know the specific state of moisture of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0033] Figure 1 is a flow chart of a cable moisture detection method according to an embodiment of the present application;

[0034] Figure 2 is a structural schematic diagram of a cable moisture detection device according to an embodiment of the present application;

[0035] Figure 3 This is a schematic diagram of the connection between a cable intermediate joint and a detection device according to an embodiment of the present application;

[0036] Figure 4 It is a structural block diagram of a cable moisture detection device according to an embodiment of the present application. DETAILED DESCRIPTION

[0037] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0038] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0039] Example 1

[0040] According to an embodiment of the present application, a cable moisture detection method is first provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0041] Figure 1 is a flow chart of a cable moisture detection method according to an embodiment of the present application, such as Figure 1 As shown, the method at least includes steps S12-S16, wherein:

[0042] Step S12, obtaining a first target temperature and a second target temperature of the target cable, wherein the target cable comprises a first cable conductor, a second cable conductor, a cable intermediate joint and an outer sheath, a temperature rise ring is disposed on the first cable conductor, and the temperature rise ring is used to increase the thermal conductivity of the first cable conductor when the target cable is in a damp state, the first cable conductor and the second cable conductor are connected through the cable intermediate joint, the outer sheath is wrapped around the outside of the first cable conductor and the second cable conductor, the first target temperature is the target temperature of the outer sheath corresponding to the first cable conductor, and the second target temperature is the target temperature of the outer sheath corresponding to the second cable conductor.

[0043] Among them, the target cable is the power cable to be tested for moisture, which is used to transmit electric energy. Once the power cable is damp, the insulation layer may be damaged, increasing the risk of leakage and short circuit of the cable, thus posing a safety hazard to personnel and equipment. The damp power cable will cause the insulation resistance to decrease, the dielectric loss to increase, the electrical performance to decline, and the transmission efficiency and stability of the cable to be affected. Moisture will accelerate the aging of the insulation of the power cable, shorten the service life of the cable, and increase the maintenance cost and replacement cost. Therefore, it is very necessary to detect moisture on the power cable, so as to detect moisture problems in time, take corresponding maintenance and repair measures, and ensure the safe and reliable operation of the cable.

[0044] The target cable includes a first cable conductor, a second cable conductor, a cable intermediate joint and an outer sheath placed on the cable conductor body of the cable intermediate head. The first cable conductor and the second cable conductor are conductors used to transmit current in the cable, and their materials are usually metal materials, such as copper, aluminum, etc. The cable intermediate joint is a cable joint in the middle part of the cable line, that is, an accessory for connecting cables, used to connect cables to equipment or other cables. The cable outer sheath is an outer covering material used to protect the internal wires and insulation layer of the cable. It is usually made of plastic, rubber or metal and has the characteristics of waterproof, wear-resistant, corrosion-resistant, etc., and can effectively protect the internal structure of the cable from the influence of the external environment. The first cable conductor and the second cable conductor are connected by the cable intermediate joint, and the outer sheath is wrapped around the outside of the first cable conductor and the second cable conductor.

[0045] It should be noted that a temperature rise ring is deployed on the first cable conductor, and the temperature rise ring is used to increase the thermal conductivity of the first cable conductor when the target cable is in a damp state. In the embodiment of the present application, the thermal conductivity of the first cable conductor deployed with the temperature rise ring will increase with the increase of the current in the circuit, thereby causing the temperature of the outer sheath to increase.

[0046] Exemplarily, the first target temperature and the second target temperature of the target cable can be obtained by using a temperature sensor, an infrared thermometer, a thermal imager, a thermometer, a data acquisition instrument, etc. The specific method depends on the actual implementation and is not limited here. Among them, the first target temperature of the target cable can be understood as the target temperature of the outer sheath corresponding to the first cable conductor after water ingress and moisture, and the second target temperature is the target temperature of the outer sheath corresponding to the second cable conductor after water ingress and moisture.

[0047] Step S14, determining a first temperature difference between a first target temperature and a first initial temperature, and determining a second temperature difference between the first target temperature and a second target temperature, wherein the first initial temperature is the temperature of an outer sheath corresponding to the first cable conductor when the target cable transmits a preset rated current.

[0048] Among them, the first initial temperature T0 is the temperature of the outer sheath corresponding to the first cable conductor when the target cable transmits the preset rated current. The preset rated current of the cable transmission refers to the maximum allowable current value set during the design and manufacturing process of the cable. This value is determined based on factors such as the conductor material, insulation material, and outer sheath material of the cable, and represents the upper limit of the current that the cable can safely transmit. In practical applications, it is necessary to select a suitable current load based on the preset rated current of the cable to ensure that the cable will not be overloaded and damaged.

[0049] After obtaining the first target temperature and the second target temperature of the target cable, the first temperature difference between the first target temperature and the first initial temperature is determined, so that it can be determined whether the current passing through the target cable changes according to the first temperature difference, and then it can be determined whether the target cable is damp. At the same time, the second temperature difference between the first target temperature and the second target temperature is determined. Since the temperature change amplitudes of the first cable conductor with a temperature rise ring and the second cable conductor without a temperature rise ring are different when damp, the temperature of the first cable conductor with a temperature rise ring will be higher than the temperature of the second cable conductor without a temperature rise ring. Therefore, according to the size of the second temperature difference and the size of the first temperature difference, it can be further accurately determined whether the target cable is damp, thereby improving the accuracy of cable dampness detection.

[0050] Step S16: Perform moisture detection on the target cable based on the first temperature difference and the second temperature difference to obtain a detection result.

[0051] Among them, the test results are used to reflect the degree of moisture of the cable. Exemplarily, the test results may include multiple moisture levels. The classification of moisture levels may vary according to the specific conditions and moisture level of the cable, but is generally judged based on the degree of moisture on the surface and inside. According to different moisture levels, corresponding measures can be taken for repair or replacement. For example, level one moisture: surface moisture, no obvious damage; level two moisture: surface moisture, slight damage; level three moisture: surface moisture, obvious damage; level four moisture: internal moisture, no obvious external damage; level five moisture: internal moisture, obvious external damage.

[0052] Based on the determined first temperature difference and second temperature difference, the target cable is tested for moisture to obtain a test result, thereby being able to accurately determine whether the target cable is damp, thereby improving the accuracy of the cable moisture detection.

[0053] Based on the above steps, by obtaining the first target temperature and the second target temperature of the target cable, wherein the target cable includes a first cable conductor, a second cable conductor, a cable intermediate joint and an outer sheath, a temperature rise ring is deployed on the first cable conductor, and the temperature rise ring is used to increase the thermal conductivity of the first cable conductor when the target cable is in a damp state, the first cable conductor and the second cable conductor are connected through the cable intermediate joint, and the outer sheath is wrapped around the outside of the first cable conductor and the second cable conductor, the first target temperature is the target temperature of the outer sheath corresponding to the first cable conductor, and the second target temperature is the target temperature of the outer sheath corresponding to the second cable conductor; determine a first temperature difference between the first target temperature and the first initial temperature, and determine a second temperature difference between the first target temperature and the second target temperature, wherein the first initial temperature is the temperature of the outer sheath corresponding to the first cable conductor when the target cable transmits a preset rated current; perform moisture detection on the target cable based on the first temperature difference and the second temperature difference to obtain a detection result. In this way, it is possible to accurately detect whether the cable is damp and the specific state of the defect, so that the operation and maintenance personnel can promptly discover abnormal conditions of the cable, further ensuring the high-quality, safe and efficient operation of the cable, thereby solving the technical problems in related technologies of inaccurate detection of cable moisture and inability to know the specific state of moisture in the cable.

[0054] Optionally, the principle of the cable moisture detection based on temperature difference in the present invention is as follows: in the first cable conductor, the thermal conductivity of air is recorded as λ0, when the first cable conductor is not damp, the thermal conductivity of the temperature rise ring is recorded as λ1, the thermal conductivity from the inner sheath to the outer sheath is recorded as λ2, take the microelement from any cable conductor to the outer sheath in the first cable conductor, T is the temperature of the microelement from the cable conductor to the outer sheath, φ is the heat flux during the conduction process from the cable conductor to the cable outer sheath. The following formulas (1) and (2) represent the heat flux during the conduction process from the first cable conductor to the cable outer sheath in the horizontal and vertical directions.

[0055]

[0056] Among them, x represents the horizontal direction and y represents the vertical direction.

[0057] In the second cable conductor, the thermal conductivity of air is recorded as λ0. When the second cable conductor is not damp, the thermal conductivity from the inner sheath to the outer sheath is recorded as λ2. Take a microelement from a cable conductor to the outer sheath in any second cable conductor, T is the temperature of the microelement from the cable conductor to the outer sheath, and φ is the heat flux during the conduction process from the cable conductor to the cable outer sheath. The following formulas (3) and (4) represent the heat flux during the conduction process from the second cable conductor to the cable outer sheath in the horizontal and vertical directions.

[0058]

[0059]

[0060] In the initial state, the differential equation for the thermal conduction of the outer sheath of the first cable conductor is expressed as formula (5), and the differential equation for the thermal conduction of the outer sheath of the second cable conductor is expressed as formula (6).

[0061]

[0062] Wherein, T0 is the initial temperature of the outer sheath corresponding to the first cable conductor when the rated current passes through the cable. T1 is the initial temperature of the outer sheath corresponding to the second cable conductor when the rated current passes through the cable. They are the density, specific heat capacity and Joule heat generated per unit time volume of the infinitesimal element.

[0063] When the cable joint is dampened by water, the thermal conductivity of the temperature rise ring becomes λ under different humidity k. 1k ', at this time, the differential equation for the thermal conduction of the outer sheath of the first cable conductor is formula (7), and the differential equation for the thermal conduction of the outer sheath of the second cable conductor is formula (8).

[0064]

[0065] Among them, T k0 is the temperature of the outer sheath of the first cable conductor after the cable intermediate joint is dampened by water, T k1 It is the temperature of the outer sheath of the second cable conductor after the cable intermediate joint is dampened by water.

[0066] Optionally, in step S16, performing moisture detection on the target cable based on the first temperature difference and the second temperature difference to obtain the detection result includes the following execution steps:

[0067] Step S161, in response to the first temperature difference being greater than the first threshold and the second temperature difference being greater than the second threshold, obtaining a first detection result, wherein the first detection result indicates that the moisture level of the target cable is the first level;

[0068] Step S162, in response to the first temperature difference being greater than the third threshold and the second temperature difference being greater than the fourth threshold, a second detection result is obtained, wherein the second detection result indicates that the moisture level of the target cable is the second level, and the moisture degree of the second level is higher than the moisture degree of the first level.

[0069] Exemplarily, the first temperature difference is used to represent the temperature difference between the target temperature of the outer sheath corresponding to the first cable conductor after it is dampened by water and the temperature of the outer sheath corresponding to the first cable conductor when the target cable transmits a preset rated current, and the second temperature difference is used to represent the temperature difference between the target temperature of the outer sheath corresponding to the first cable conductor after it is dampened by water and the target temperature of the outer sheath corresponding to the second cable conductor after it is dampened by water.

[0070] When the first temperature difference is greater than a preset first threshold and the second temperature difference is greater than a preset second threshold, a first detection result is obtained. The first threshold is a preset demarcation value used to characterize the temperature difference between the target temperature of the outer sheath corresponding to the first cable conductor after water ingress and moisture and the temperature of the outer sheath corresponding to the first cable conductor when the target cable transmits a preset rated current. The second threshold is used to characterize the temperature difference between the target temperature of the outer sheath corresponding to the first cable conductor after water ingress and moisture and the target temperature of the outer sheath corresponding to the second cable conductor after water ingress and moisture. The first detection result indicates that the moisture level of the target cable is the first level.

[0071] When the first temperature difference is greater than a preset third threshold and the second temperature difference is greater than a preset fourth threshold, a second detection result is obtained. The third threshold is a pre-set demarcation value for characterizing the temperature difference between the target temperature of the outer sheath corresponding to the first cable conductor after water ingress and moisture and the temperature of the outer sheath corresponding to the first cable conductor when the target cable transmits a preset rated current. The fourth threshold is used to characterize the temperature difference between the target temperature of the outer sheath corresponding to the first cable conductor after water ingress and moisture and the target temperature of the outer sheath corresponding to the second cable conductor after water ingress and moisture. The second detection result indicates that the moisture level of the target cable is the second level.

[0072] It should be noted that the third threshold is greater than the first threshold, the fourth threshold is greater than the second threshold, and the second level of moisture is higher than the first level of moisture. That is, the greater the first temperature difference and the second temperature difference, the higher the moisture level and the higher the moisture.

[0073] Optionally, in step S16, before determining a first temperature difference between the first target temperature and the first initial temperature, and determining a second temperature difference between the first target temperature and the second target temperature, the method further includes executing step S15: in response to the target cable transmitting a preset rated current, obtaining a first initial temperature of the outer sheath corresponding to the first cable conductor and a second initial temperature of the outer sheath corresponding to the second cable conductor.

[0074] Exemplarily, when the target cable is at the maximum tolerable current value set in the design, that is, when the cable passes the rated current, the first initial temperature of the outer sheath corresponding to the first cable conductor and the second initial temperature of the outer sheath corresponding to the second cable conductor at this current are obtained, that is, T0 and T1 are obtained.

[0075] Optionally, in step S16, performing moisture detection on the target cable based on the first temperature difference and the second temperature difference to obtain the detection result further includes the following execution steps:

[0076] Step S163, determining the temperature difference between the second target temperature and the second initial temperature to obtain a third temperature difference;

[0077] Step S164: Perform moisture detection on the target cable based on the first temperature difference, the second temperature difference and the third temperature difference to obtain a detection result.

[0078] Exemplarily, the second target temperature is the target temperature of the outer sheath corresponding to the second cable conductor after water ingress and moisture, the second initial temperature is the temperature of the outer sheath corresponding to the second cable conductor when the target cable transmits a preset rated current, and the temperature difference between the second target temperature and the second initial temperature is determined to obtain the third temperature difference. Thus, a more accurate moisture detection can be performed on the target cable based on the first temperature difference, the second temperature difference, and the third temperature difference to obtain a more accurate detection result, thereby determining the degree of moisture in the target cable.

[0079] Optionally, in step S164, performing moisture detection on the target cable based on the first temperature difference, the second temperature difference and the third temperature difference, and obtaining the detection result includes performing the following steps:

[0080] Step S1641, in response to the first temperature difference being greater than the fifth threshold value, the second temperature difference being greater than the sixth threshold value, and the third temperature difference being greater than the seventh threshold value, obtaining a third detection result, wherein the third detection result indicates that the moisture level of the target cable is the third level;

[0081] Step S1642, in response to the first temperature difference being greater than the eighth threshold value, the second temperature difference being greater than the ninth threshold value, and the third temperature difference being greater than the tenth threshold value, a fourth detection result is obtained, wherein the fourth detection result indicates that the moisture level of the target cable is the fourth level, and the fourth level of moisture is higher than the third level of moisture.

[0082] Exemplarily, the third temperature difference is used to represent the temperature difference between the target temperature of the outer sheath corresponding to the second cable conductor after water ingress and moisture and the temperature of the outer sheath corresponding to the second cable conductor when the target cable transmits a preset rated current. When the first temperature difference is greater than the preset fifth threshold value, the second temperature difference is greater than the preset sixth threshold value, and the third temperature difference is greater than the preset seventh threshold value, the third detection result is obtained. Among them, the fifth threshold value is a pre-set demarcation value for characterizing the temperature difference between the target temperature of the outer sheath corresponding to the first cable conductor after water ingress and moisture and the temperature of the outer sheath corresponding to the first cable conductor when the target cable transmits a preset rated current. The sixth threshold value is used to characterize the demarcation value of the temperature difference between the target temperature of the outer sheath corresponding to the first cable conductor after water ingress and moisture and the target temperature of the outer sheath corresponding to the second cable conductor after water ingress and moisture. The seventh threshold value is used to characterize the demarcation value of the temperature difference between the target temperature of the outer sheath corresponding to the second cable conductor after water ingress and moisture and the temperature of the outer sheath corresponding to the second cable conductor when the target cable transmits a preset rated current. The third detection result indicates that the moisture level of the target cable is the third level.

[0083] When the first temperature difference is greater than the preset eighth threshold value, the second temperature difference is greater than the preset ninth threshold value, and the third temperature difference is greater than the tenth threshold value, the fourth detection result is obtained. Among them, the eighth threshold value is a pre-set demarcation value for characterizing the temperature difference between the target temperature of the outer sheath corresponding to the first cable conductor after water ingress and moisture and the temperature of the outer sheath corresponding to the first cable conductor when the target cable transmits a preset rated current. The ninth threshold value is used to characterize the demarcation value of the temperature difference between the target temperature of the outer sheath corresponding to the first cable conductor after water ingress and moisture and the target temperature of the outer sheath corresponding to the second cable conductor after water ingress and moisture. The tenth threshold value is used to characterize the demarcation value of the temperature difference between the target temperature of the outer sheath corresponding to the second cable conductor after water ingress and moisture and the temperature of the outer sheath corresponding to the second cable conductor when the target cable transmits a preset rated current. The fourth detection result indicates that the moisture level of the target cable is the fourth level. It should be noted that the eighth threshold value is greater than the fifth threshold value, the ninth threshold value is greater than the sixth threshold value, and the tenth threshold value is greater than the seventh threshold value, and the fourth level of moisture is higher than the third level of moisture. That is, the greater the first temperature difference, the second temperature difference and the third temperature difference, the higher the moisture level and the higher the degree of moisture.

[0084] Based on this, the target cable can be comprehensively detected through the first temperature difference, the second temperature difference and the third temperature difference to accurately obtain its moisture degree.

[0085] Optionally, in step S12, the method further includes executing: acquiring the first target temperature and the second target temperature based on a preset time interval.

[0086] Exemplarily, the first target temperature and the second target temperature are obtained based on a preset time interval. The preset time interval is a preset interval for collecting the target temperature of the outer sheath corresponding to the first cable conductor after water ingress and the target temperature of the outer sheath corresponding to the second cable conductor after water ingress and. The preset time interval is determined according to actual conditions and is not specifically limited here.

[0087] By acquiring the first target temperature and the second target temperature at a preset time interval, the target cable can be tested for moisture in a timely manner, so that when the target cable is damp, it can be found and replaced or maintained in time to reduce losses. Optionally, the method further includes: displaying the test result on a display.

[0088] Exemplarily, the cable moisture detection device also includes a display for displaying the detection result, that is, the moisture degree of the cable, so as to provide feedback to the user.

[0089] Optionally, the method further includes performing: maintaining or replacing the target cable based on the detection result.

[0090] For example, according to the cable moisture detection results, if the target cable is found to be damp, it needs to be maintained or replaced immediately to avoid possible safety hazards and equipment damage. The specific operations are as follows: If the cable is slightly damp, maintenance measures can be taken to repair the damp part. First, the damp part needs to be cleaned and dried, and then repaired with insulating material or insulating tape. After the repair, an insulation test is required to ensure the repair effect. If the cable is severely damp and cannot be repaired by maintenance, it needs to be replaced. When replacing the cable, it is necessary to select a new cable that meets the specifications and standards, and ensure that the installation process complies with relevant safety regulations. Whether it is maintenance or replacement, it needs to be operated under the guidance of professionals to ensure the safety and reliability of the cable. In addition, it is necessary to investigate the cause of the cable dampness to prevent the recurrence of similar problems.

[0091] According to an embodiment of the present application, a cable moisture detection device is also provided. The cable moisture detection device includes a display, a processor, a temperature rise sensor and a target cable to be detected. The display is used to display the moisture degree of the target cable. The processor is used to calculate the temperature difference of the outer sheath of the target cable and analyze the moisture degree of the target cable. The temperature rise sensor includes a temperature rise ring and a thermocouple. The thermocouple is used to collect the temperature of the outer sheath of the target cable. The target cable includes a first cable conductor, a second cable conductor, a cable intermediate joint and an outer sheath. The first cable conductor and the second cable conductor are connected through the cable intermediate joint. A temperature rise ring is deployed on the first cable conductor. The temperature rise ring is used to increase the thermal conductivity of the first cable conductor when the target cable is in a damp state. The outer sheath is wrapped around the outside of the first cable conductor and the second cable conductor.

[0092] For example, Figure 2 is a schematic structural diagram of a cable moisture detection device according to an embodiment of the present application, such as Figure 2 As shown, the cable moisture detection device includes a temperature rise sensor module, a processor module and a display module.

[0093] Among them, the temperature rise sensor module includes a temperature rise ring (also called a moisture indicator ring) with a significant increase in thermal conductivity after being damp and a thermocouple probe. The temperature rise ring is used to increase the thermal conductivity of the cable conductor when the cable to be tested is in a damp state, and the thermocouple probe is used to collect the temperature of the outer sheath of the cable to be tested.

[0094] The processor module includes an analog-to-digital converter (ADC) and a microcontroller unit (MCU), which are used to calculate the temperature difference of the outer sheath of the target cable and analyze the moisture degree of the target cable.

[0095] The display module includes a liquid crystal display and a power supply, and is used to display the moisture degree of the target cable.

[0096] In addition to the above-mentioned devices, the cable moisture detection device also includes a target cable to be detected ( Figure 2 The target cable comprises a first cable conductor, a second cable conductor, a cable intermediate joint and an outer sheath. The first cable conductor and the second cable conductor are connected via the cable intermediate joint. A temperature rise ring is disposed on the first cable conductor. The temperature rise ring is used to increase the thermal conductivity of the first cable conductor when the target cable is in a damp state. The outer sheath is wrapped around the outside of the first cable conductor and the second cable conductor.

[0097] Figure 3 is a schematic diagram of a connection between a cable intermediate joint and a detection device according to an embodiment of the present application, such as Figure 3 As shown, the cable includes a conductor insulation layer, an insulation shielding layer, a copper shielding layer, an inner sheath, a copper armor layer and an outer sheath. Figure 3 The "connecting tube" in the figure is located inside the cable line and connects the cable conductors on the left and right sides. A temperature rise ring is deployed on the first cable conductor. Taking the radial midline of the middle head as a mirror image, no temperature rise ring is placed on the other side of the cable conductor. Two sets of thermocouple probes are placed on the temperature rise ring and the outer sheath of the cable without the temperature rise ring. The thermocouple terminal is connected to the ADC analog signal / digital signal converter. The ADC analog signal / digital signal converter processes the temperature rise difference of the middle joint of the cable through the microcontroller unit MCU, calculates the temperature difference and analyzes it, and displays the calculation results on the display.

[0098] For example, by simulating the temperature distribution change process after the temperature rise ring enters water through thermal simulation software, it can be obtained that when water enters the joint, the temperature rise ring reacts with water and its own thermal conductivity increases. When no water enters, the initial thermal conductivity of the temperature rise ring material is close to that of cross-linked polyethylene or silicone rubber, and the temperature distribution of the joint is the temperature distribution of the joint under normal conditions. Under normal conditions, the temperature of the cable is evenly distributed from the center to the outside. The temperature at the temperature rise ring position is not significantly different from that at adjacent positions.

[0099] When water enters the joint, the humidity of the middle head begins to increase, and the thermal conductivity of the temperature rise ring material increases, which helps internal heat dissipation. When considering that the humidity of the middle head ranges from 30% to 80%, the change rate of the thermal conductivity of the temperature rise ring is 0% to 100%, and the internal distribution data of the joint is shown below.

[0100] Among them, the humidity of the middle head is 30%, the thermal conductivity is the initial value, the temperature of the outer sheath without the temperature rise ring installed is 88.42 degrees, the temperature of the crimping tube is 90.1 degrees, and the temperature of the temperature rise ring is 89.4 degrees.

[0101] The humidity of the middle head is 40%, the thermal conductivity increases by 20%, the temperature of the outer sheath without the temperature rise ring installed is 88.4 degrees, the temperature of the crimping tube is 90.1 degrees, and the temperature of the temperature rise ring is 89.7 degrees.

[0102] The humidity of the middle head is 50%, the thermal conductivity increases by 40%, the temperature of the outer sheath without the temperature rise ring installed is 88.1 degrees, the temperature of the crimping tube is 90.1 degrees, and the temperature of the temperature rise ring is 89.8 degrees.

[0103] The humidity of the middle head reached 60%, the thermal conductivity increased by 60%, the temperature of the outer sheath without the temperature rise ring installed was 88.1 degrees, the temperature of the crimping tube was 90.1 degrees, and the temperature of the temperature rise ring was 89.8 degrees.

[0104] The humidity of the middle head reached 65%, the thermal conductivity increased by 80%, the temperature of the outer sheath without the temperature rise ring installed was 87.9 degrees, the temperature of the crimping tube was 90.1 degrees, and the temperature of the temperature rise ring was 89.8 degrees.

[0105] The humidity of the middle head reached 70%, the thermal conductivity increased by 100%, the temperature of the outer sheath without the temperature rise ring installed was 87.7 degrees, the temperature of the crimping tube was 90.1 degrees, and the temperature of the temperature rise ring was 89.8 degrees.

[0106] The humidity of the middle head reached 75%, the thermal conductivity increased by 200%, the temperature of the outer sheath without the temperature rise ring installed was 87.6 degrees, the temperature of the crimping tube was 90.1 degrees, and the temperature of the temperature rise ring was 89.9 degrees.

[0107] The humidity of the middle head reached 80%, the thermal conductivity increased by 500%, the temperature of the outer sheath without the temperature rise ring installed was 87.6 degrees, the temperature of the crimping tube was 90.1 degrees, and the temperature of the temperature rise ring was 90 degrees.

[0108] It can be seen that after simulating different water ingress degrees and times, the thermal conductivity of the temperature rise ring increases. Under different changes in thermal conductivity, the temperature of the temperature rise ring continues to rise, and the temperature difference with the conductor and the crimping tube (connecting tube) gradually decreases. However, due to the low thermal conductivity of the adjacent cross-linked polyethylene and poor heat dissipation performance, the temperature difference with the temperature rise ring gradually increases.

[0109] The following results can be obtained: 1) When the cable is slightly flooded, the humidity exceeds 50%, and the thermal conductivity change rate is considered to be 40%. At this time, when the conductor temperature is 90 degrees, the temperature rise difference between the insulation layer and the temperature rise ring is 1.7 degrees; 2) When the cable is highly flooded, the thermal conductivity change rate is considered to be 60%. At this time, when the conductor temperature is 90 degrees, the temperature difference between the outer sheath without the temperature rise ring installed and the temperature rise ring is 1.8 degrees; 3) When the cable is seriously flooded, the thermal conductivity change rate is considered to be 100%, and the humidity of the middle head reaches 70%. At this time, when the conductor temperature is 90 degrees, the temperature difference between the insulation layer and the temperature rise ring is 2.4 degrees. However, as the thermal conductivity of the temperature rise ring increases further, the temperature difference between the insulation layer and the temperature rise ring no longer changes. Therefore, it can be seen that by simulating the change in the thermal conductivity of the temperature rise ring after the cable joint is flooded, the temperature changes can be used to evaluate the water ingress status of the cable.

[0110] In summary, the present application obtains a first target temperature and a second target temperature of a target cable, wherein the target cable includes a first cable conductor, a second cable conductor, a cable intermediate joint and an outer sheath, a temperature rise ring is disposed on the first cable conductor, and the temperature rise ring is used to increase the thermal conductivity of the first cable conductor when the target cable is in a damp state, the first cable conductor and the second cable conductor are connected through the cable intermediate joint, and the outer sheath is wrapped around the outside of the first cable conductor and the second cable conductor, the first target temperature is the target temperature of the outer sheath corresponding to the first cable conductor, and the second target temperature is the target temperature of the outer sheath corresponding to the second cable conductor; determines a first temperature difference between the first target temperature and the first initial temperature, and determines a second temperature difference between the first target temperature and the second target temperature, wherein the first initial temperature is the temperature of the outer sheath corresponding to the first cable conductor when the target cable transmits a preset rated current; performs moisture detection on the target cable based on the first temperature difference and the second temperature difference to obtain a detection result. In this way, it is possible to more accurately detect whether the cable is damp and the specific state of the defect, so that operation and maintenance personnel can promptly discover abnormal conditions of the cable, further ensuring the high-quality, safe and efficient operation of the cable, thereby solving the technical problems in related technologies of inaccurate detection of cable moisture and inability to know the specific state of moisture of the cable.

[0111] Example 2

[0112] According to an embodiment of the present application, a cable moisture detection device for implementing the method in Example 1 is also provided. Figure 4is a structural block diagram of a cable moisture detection device according to an embodiment of the present application, such as Figure 4 As shown, the cable moisture detection device 40 includes: an acquisition module 42, which is used to obtain a first target temperature and a second target temperature of a target cable, wherein the target cable includes a first cable conductor, a second cable conductor, a cable intermediate joint and an outer sheath, a temperature rise ring is disposed on the first cable conductor, and the temperature rise ring is used to increase the thermal conductivity of the first cable conductor when the target cable is in a damp state, the first cable conductor and the second cable conductor are connected through the cable intermediate joint, and the outer sheath is wrapped around the outside of the first cable conductor and the second cable conductor, the first target temperature is the target temperature of the outer sheath corresponding to the first cable conductor, and the second target temperature is the target temperature of the outer sheath corresponding to the second cable conductor; a determination module 44, which is used to determine a first temperature difference between the first target temperature and the first initial temperature, and to determine a second temperature difference between the first target temperature and the second target temperature, wherein the first initial temperature is the temperature of the outer sheath corresponding to the first cable conductor when the target cable transmits a preset rated current; a detection module 46, which is used to perform moisture detection on the target cable based on the first temperature difference and the second temperature difference to obtain a detection result.

[0113] Optionally, the detection module 46 is also used to obtain a first detection result in response to the first temperature difference being greater than a first threshold value and the second temperature difference being greater than a second threshold value, wherein the first detection result indicates that the moisture level of the target cable is a first level; and to obtain a second detection result in response to the first temperature difference being greater than a third threshold value and the second temperature difference being greater than a fourth threshold value, wherein the second detection result indicates that the moisture level of the target cable is a second level, and the second level of moisture is higher than the first level.

[0114] Optionally, the detection module 46 is further configured to obtain a first initial temperature of the outer sheath corresponding to the first cable conductor and a second initial temperature of the outer sheath corresponding to the second cable conductor in response to the target cable transmitting a preset rated current.

[0115] Optionally, the detection module 46 is further used to determine the temperature difference between the second target temperature and the second initial temperature to obtain a third temperature difference; perform moisture detection on the target cable based on the first temperature difference, the second temperature difference and the third temperature difference to obtain a detection result.

[0116] Optionally, the detection module 46 is also used to obtain a third detection result in response to the first temperature difference being greater than a fifth threshold value, the second temperature difference being greater than a sixth threshold value, and the third temperature difference being greater than a seventh threshold value, wherein the third detection result indicates that the moisture level of the target cable is a third level; and to obtain a fourth detection result in response to the first temperature difference being greater than an eighth threshold value, the second temperature difference being greater than a ninth threshold value, and the third temperature difference being greater than a tenth threshold value, wherein the fourth detection result indicates that the moisture level of the target cable is a fourth level, and the fourth level of moisture is higher than the third level of moisture.

[0117] Optionally, the detection module 46 is further configured to obtain the first target temperature and the second target temperature based on a preset time interval.

[0118] Optionally, the device further includes: a display module, configured to display the detection result on a display.

[0119] Optionally, the device further includes: a processing module, configured to maintain or replace the target cable based on the detection result.

[0120] It should be noted that each module in the cable moisture detection device in the embodiment of the present application corresponds one by one to each implementation step of the cable moisture detection method in Example 1. Since a detailed description has been given in Example 1, some details not reflected in this embodiment can be referred to Example 1 and will not be repeated here.

[0121] Example 3

[0122] According to an embodiment of the present application, a non-volatile storage medium is also provided, which includes a stored computer program, wherein the device where the non-volatile storage medium is located executes the cable moisture detection method in Example 1 by running the computer program.

[0123] Optionally, the device where the non-volatile storage medium is located implements the following steps by running the computer program: obtaining a first target temperature and a second target temperature of a target cable, wherein the target cable comprises a first cable conductor, a second cable conductor, a cable intermediate joint and an outer sheath, a temperature rise ring is disposed on the first cable conductor, the temperature rise ring is used to increase the thermal conductivity of the first cable conductor when the target cable is in a damp state, the first cable conductor and the second cable conductor are connected through the cable intermediate joint, the outer sheath is wrapped around the outside of the first cable conductor and the second cable conductor, the first target temperature is the target temperature of the outer sheath corresponding to the first cable conductor, and the second target temperature is the target temperature of the outer sheath corresponding to the second cable conductor; determining a first temperature difference between the first target temperature and a first initial temperature, and determining a second temperature difference between the first target temperature and the second target temperature, wherein the first initial temperature is the temperature of the outer sheath corresponding to the first cable conductor when the target cable transmits a preset rated current; performing a moisture detection on the target cable based on the first temperature difference and the second temperature difference to obtain a detection result.

[0124] Optionally, the device where the non-volatile storage medium is located is also used to execute, by running the computer program, in response to the first temperature difference being greater than a first threshold value and the second temperature difference being greater than a second threshold value, to obtain a first detection result, wherein the first detection result indicates that the moisture level of the target cable is a first level; in response to the first temperature difference being greater than a third threshold value and the second temperature difference being greater than a fourth threshold value, to obtain a second detection result, wherein the second detection result indicates that the moisture level of the target cable is a second level, and the second level has a higher degree of moisture than the first level.

[0125] Optionally, the device where the non-volatile storage medium is located is also used to execute, in response to the target cable transmitting a preset rated current, to obtain a first initial temperature of the outer sheath corresponding to the first cable conductor and a second initial temperature of the outer sheath corresponding to the second cable conductor by running the computer program.

[0126] Optionally, the device where the non-volatile storage medium is located is also used to execute the determination of the temperature difference between the second target temperature and the second initial temperature to obtain a third temperature difference by running the computer program; and to perform moisture detection on the target cable based on the first temperature difference, the second temperature difference and the third temperature difference to obtain a detection result.

[0127] Optionally, the device where the non-volatile storage medium is located is also used to execute, by running the computer program, in response to the first temperature difference being greater than a fifth threshold value, the second temperature difference being greater than a sixth threshold value, and the third temperature difference being greater than a seventh threshold value, to obtain a third detection result, wherein the third detection result indicates that the moisture level of the target cable is a third level; in response to the first temperature difference being greater than an eighth threshold value, the second temperature difference being greater than a ninth threshold value, and the third temperature difference being greater than a tenth threshold value, to obtain a fourth detection result, wherein the fourth detection result indicates that the moisture level of the target cable is a fourth level, and the fourth level of moisture is higher than the third level of moisture.

[0128] Optionally, the device where the non-volatile storage medium is located is further used to execute the acquisition of the first target temperature and the second target temperature based on a preset time interval by running the computer program.

[0129] Optionally, the device where the non-volatile storage medium is located is also used to display the detection results on a display by running the computer program.

[0130] Optionally, the device where the non-volatile storage medium is located is also used to execute maintenance or replacement of the target cable based on the detection result by running the computer program.

[0131] According to an embodiment of the present application, a computer program product is also provided, including a computer program, and when the computer program is executed by a processor, the cable moisture detection method in Embodiment 1 of the present application is implemented.

[0132] Exemplarily, when the computer program is running, the following steps are executed: obtaining a first target temperature and a second target temperature of a target cable, wherein the target cable comprises a first cable conductor, a second cable conductor, a cable intermediate joint and an outer sheath, a temperature rise ring is disposed on the first cable conductor, the temperature rise ring is used to increase the thermal conductivity of the first cable conductor when the target cable is in a damp state, the first cable conductor and the second cable conductor are connected through the cable intermediate joint, the outer sheath is wrapped around the outside of the first cable conductor and the second cable conductor, the first target temperature is the target temperature of the outer sheath corresponding to the first cable conductor, and the second target temperature is the target temperature of the outer sheath corresponding to the second cable conductor; determining a first temperature difference between the first target temperature and a first initial temperature, and determining a second temperature difference between the first target temperature and the second target temperature, wherein the first initial temperature is the temperature of the outer sheath corresponding to the first cable conductor when the target cable transmits a preset rated current; performing a moisture detection on the target cable based on the first temperature difference and the second temperature difference to obtain a detection result.

[0133] Optionally, when the computer program is running, it is also used to execute and implement a first detection result obtained in response to the first temperature difference being greater than a first threshold value and the second temperature difference being greater than a second threshold value, wherein the first detection result indicates that the moisture level of the target cable is a first level; and a second detection result obtained in response to the first temperature difference being greater than a third threshold value and the second temperature difference being greater than a fourth threshold value, wherein the second detection result indicates that the moisture level of the target cable is a second level, and the second level has a higher degree of moisture than the first level.

[0134] Optionally, when the computer program is run, it is also used to execute the implementation of obtaining a first initial temperature of the outer sheath corresponding to the first cable conductor and a second initial temperature of the outer sheath corresponding to the second cable conductor in response to the target cable transmitting a preset rated current.

[0135] Optionally, when the computer program is running, it is also used to execute the determination of the temperature difference between the second target temperature and the second initial temperature to obtain a third temperature difference; based on the first temperature difference, the second temperature difference and the third temperature difference, the target cable is tested for moisture to obtain a test result.

[0136] Optionally, when the computer program is running, it is also used to execute and implement that in response to the first temperature difference being greater than a fifth threshold value, the second temperature difference being greater than a sixth threshold value, and the third temperature difference being greater than a seventh threshold value, a third detection result is obtained, wherein the third detection result indicates that the moisture level of the target cable is a third level; in response to the first temperature difference being greater than an eighth threshold value, the second temperature difference being greater than a ninth threshold value, and the third temperature difference being greater than a tenth threshold value, a fourth detection result is obtained, wherein the fourth detection result indicates that the moisture level of the target cable is a fourth level, and the fourth level of moisture is higher than the third level of moisture.

[0137] Optionally, when the computer program is run, it is further used to execute and implement obtaining the first target temperature and the second target temperature based on a preset time interval.

[0138] Optionally, when the computer program is running, it is also used to execute and realize displaying the detection results on a display.

[0139] Optionally, when the computer program is run, it is also used to execute maintenance or replacement of the target cable based on the detection result.

[0140] According to an embodiment of the present application, an electronic device is further provided, comprising: a memory and a processor, wherein a computer program is stored in the memory, and the processor is configured to execute the cable moisture detection method in Example 1 through the computer program.

[0141] Exemplarily, the processor is configured to execute the following steps through a computer program: obtaining a first target temperature and a second target temperature of a target cable, wherein the target cable comprises a first cable conductor, a second cable conductor, a cable intermediate joint and an outer sheath, a temperature rise ring is disposed on the first cable conductor, the temperature rise ring is used to increase the thermal conductivity of the first cable conductor when the target cable is in a damp state, the first cable conductor and the second cable conductor are connected through the cable intermediate joint, the outer sheath is wrapped around the outside of the first cable conductor and the second cable conductor, the first target temperature is the target temperature of the outer sheath corresponding to the first cable conductor, and the second target temperature is the target temperature of the outer sheath corresponding to the second cable conductor; determining a first temperature difference between the first target temperature and a first initial temperature, and determining a second temperature difference between the first target temperature and the second target temperature, wherein the first initial temperature is the temperature of the outer sheath corresponding to the first cable conductor when the target cable transmits a preset rated current; performing a moisture detection on the target cable based on the first temperature difference and the second temperature difference to obtain a detection result.

[0142] Optionally, the processor is configured to execute through a computer program: in response to the first temperature difference being greater than a first threshold value and the second temperature difference being greater than a second threshold value, a first detection result is obtained, wherein the first detection result indicates that the moisture level of the target cable is a first level; in response to the first temperature difference being greater than a third threshold value and the second temperature difference being greater than a fourth threshold value, a second detection result is obtained, wherein the second detection result indicates that the moisture level of the target cable is a second level, and the second level has a higher degree of moisture than the first level.

[0143] Optionally, the processor is configured to execute, through a computer program, obtaining a first initial temperature of an outer sheath corresponding to a first cable conductor and a second initial temperature of an outer sheath corresponding to a second cable conductor in response to a preset rated current transmitted by the target cable.

[0144] Optionally, the processor is configured to execute, through a computer program, determining the temperature difference between the second target temperature and the second initial temperature to obtain a third temperature difference; and performing a moisture detection on the target cable based on the first temperature difference, the second temperature difference and the third temperature difference to obtain a detection result.

[0145] Optionally, the processor is configured to execute through a computer program: in response to the first temperature difference being greater than a fifth threshold value, the second temperature difference being greater than a sixth threshold value, and the third temperature difference being greater than a seventh threshold value, a third detection result is obtained, wherein the third detection result indicates that the moisture level of the target cable is a third level; in response to the first temperature difference being greater than an eighth threshold value, the second temperature difference being greater than a ninth threshold value, and the third temperature difference being greater than a tenth threshold value, a fourth detection result is obtained, wherein the fourth detection result indicates that the moisture level of the target cable is a fourth level, and the fourth level of moisture is higher than the third level of moisture.

[0146] Optionally, the processor is configured to execute, through a computer program, obtaining the first target temperature and the second target temperature based on a preset time interval.

[0147] Optionally, the processor is configured to execute, through the computer program, displaying the detection result on a display.

[0148] Optionally, the processor is configured to execute, through the computer program, maintenance or replacement of the target cable based on the detection result.

[0149] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0150] In the above embodiments of the present application, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0151] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0152] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0153] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0154] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the relevant technology or all or part of the technical solution, can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, disk or optical disk, etc. Various media that can store program codes.

[0155] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A cable moisture detection method, characterized in that: The method comprises: Obtaining a first target temperature and a second target temperature of a target cable, wherein the target cable comprises a first cable conductor, a second cable conductor, a cable intermediate joint and an outer sheath, a temperature rise ring is disposed on the first cable conductor, and the temperature rise ring is used to increase the thermal conductivity of the first cable conductor when the target cable is in a damp state, the first cable conductor and the second cable conductor are connected through the cable intermediate joint, the outer sheath is wrapped around the outside of the first cable conductor and the second cable conductor, the first target temperature is the target temperature of the outer sheath corresponding to the first cable conductor, and the second target temperature is the target temperature of the outer sheath corresponding to the second cable conductor; Determining a first temperature difference between the first target temperature and a first initial temperature, and determining a second temperature difference between the first target temperature and the second target temperature, wherein the first initial temperature is a temperature of an outer sheath corresponding to the first cable conductor when the target cable transmits a preset rated current; Performing moisture detection on the target cable based on the first temperature difference and the second temperature difference to obtain a detection result; The moisture detection of the target cable based on the first temperature difference and the second temperature difference obtains the detection results including: in response to the first temperature difference being greater than a first threshold value and the second temperature difference being greater than a second threshold value, obtaining a first detection result, wherein the first detection result indicates that the moisture level of the target cable is a first level; in response to the first temperature difference being greater than a third threshold value and the second temperature difference being greater than a fourth threshold value, obtaining a second detection result, wherein the second detection result indicates that the moisture level of the target cable is a second level, and the second level has a higher degree of moisture than the first level.

2. The method according to claim 1, characterized in that Before determining a first temperature difference between the first target temperature and the first initial temperature, and determining a second temperature difference between the first target temperature and the second target temperature, the method further includes: In response to a preset rated current transmitted by the target cable, the first initial temperature of the outer sheath corresponding to the first cable conductor and the second initial temperature of the outer sheath corresponding to the second cable conductor are obtained.

3. The method according to claim 2, characterized in that The performing moisture detection on the target cable based on the first temperature difference and the second temperature difference to obtain the detection result comprises: determining a temperature difference between the second target temperature and the second initial temperature to obtain a third temperature difference; The target cable is subjected to moisture detection based on the first temperature difference, the second temperature difference and the third temperature difference to obtain the detection result.

4. The method according to claim 3, characterized in that The performing moisture detection on the target cable based on the first temperature difference, the second temperature difference and the third temperature difference to obtain the detection result comprises: In response to the first temperature difference being greater than a fifth threshold value, the second temperature difference being greater than a sixth threshold value, and the third temperature difference being greater than a seventh threshold value, obtaining a third detection result, wherein the third detection result indicates that the moisture level of the target cable is a third level; In response to the first temperature difference being greater than the eighth threshold, the second temperature difference being greater than the ninth threshold, and the third temperature difference being greater than the tenth threshold, a fourth detection result is obtained, wherein the fourth detection result indicates that the moisture level of the target cable is the fourth level, and the fourth level is higher than the third level.

5. The method according to any one of claims 1 to 4, characterized in that The obtaining of the first target temperature and the second target temperature of the target cable comprises: The first target temperature and the second target temperature are acquired based on a preset time interval.

6. The method according to any one of claims 1 to 4, characterized in that The method further comprises: The detection result is displayed on a display.

7. The method according to any one of claims 1 to 4, characterized in that The method further comprises: The target cable is maintained or replaced based on the detection result.

8. A cable moisture detection device, the cable moisture detection device is used to implement the cable moisture detection method described in any one of claims 1 to 7, characterized in that: The cable moisture detection device includes a display, a processor, a temperature rise sensor and a target cable to be detected, the display is used to display the moisture degree of the target cable, the processor is used to calculate the temperature difference of the outer sheath of the target cable and analyze the moisture degree of the target cable, the temperature rise sensor includes a temperature rise ring and a thermocouple, the thermocouple is used to collect the temperature of the outer sheath of the target cable, the target cable includes a first cable conductor, a second cable conductor, a cable intermediate joint and the outer sheath, the first cable conductor and the second cable conductor are connected through the cable intermediate joint, the temperature rise ring is disposed on the first cable conductor, the temperature rise ring is used to increase the thermal conductivity of the first cable conductor when the target cable is in a damp state, and the outer sheath is wrapped around the outside of the first cable conductor and the second cable conductor.

9. A cable moisture detection device, characterized in that: The device comprises: an acquisition module, used for acquiring a first target temperature and a second target temperature of a target cable, wherein the target cable comprises a first cable conductor, a second cable conductor, a cable intermediate joint and an outer sheath, a temperature rise ring is disposed on the first cable conductor, the temperature rise ring is used for increasing the thermal conductivity of the first cable conductor when the target cable is in a damp state, the first cable conductor and the second cable conductor are connected via the cable intermediate joint, the outer sheath is wrapped around the outside of the first cable conductor and the second cable conductor, the first target temperature is the target temperature of the outer sheath corresponding to the first cable conductor, and the second target temperature is the target temperature of the outer sheath corresponding to the second cable conductor; a determination module, configured to determine a first temperature difference between the first target temperature and a first initial temperature, and to determine a second temperature difference between the first target temperature and the second target temperature, wherein the first initial temperature is a temperature of an outer sheath corresponding to the first cable conductor when the target cable transmits a preset rated current; A detection module, configured to perform moisture detection on the target cable based on the first temperature difference and the second temperature difference to obtain a detection result; The detection module is also used to obtain a first detection result in response to the first temperature difference being greater than a first threshold value and the second temperature difference being greater than a second threshold value, wherein the first detection result indicates that the moisture level of the target cable is a first level; and to obtain a second detection result in response to the first temperature difference being greater than a third threshold value and the second temperature difference being greater than a fourth threshold value, wherein the second detection result indicates that the moisture level of the target cable is a second level, and the second level has a higher degree of moisture than the first level.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, wherein the computer program is configured to execute the cable moisture detection method described in any one of claims 1 to 7 when running on a computer or a processor.

11. A computer program product, characterized in that The invention comprises a computer program, which, when executed by a processor, implements the cable moisture detection method according to any one of claims 1 to 7.

12. An electronic device comprising a memory and a processor, characterized in that: The memory stores a computer program, and the processor is configured to run the computer program to execute the cable moisture detection method as described in any one of claims 1 to 7.

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