Cable line selection dissociation method and device based on infrared temperature measurement

Abstract

The invention relates to a cable line selection and dissociation method and device based on infrared temperature measurement, and relates to the technical field of waste cable treatment. The method comprises the following steps: determining a head terminal and a tail terminal of an abnormal cable, connecting any one of the head terminal and the tail terminal to a standby power supply, and connecting the other terminal except the any one terminal to an in-station grounding grid of a power station; determining at least one point location to be detected in a cable trench where the abnormal cable is located; in the preset power-on time, temperature measurement is carried out on all cables corresponding to the at least one to-be-measured point location based on an infrared thermometer, and the temperature change value of any cable in all the cables in the preset power-on time is obtained; under the condition that the temperature change value of any cable within the preset power-on time meets a preset temperature rise condition, determining that any cable is an abnormal cable corresponding to the to-be-detected point location; and marking the abnormal cable corresponding to the point location to be detected to obtain a marking result. By adopting the method, the treatment efficiency of the waste cable can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of waste cable processing, and in particular to a cable line selection and extraction method, device, computer equipment, computer-readable storage medium and computer program product based on infrared temperature measurement. Background Art

[0002] There are cable trenches in substations and converter stations for laying power cables and control cables between devices in the station. Due to the large number of cables, multiple cables will be stacked in one cable trench. During the operation and maintenance process, some cables need to be discarded due to cable damage or station expansion and reconstruction. Currently, the discarded cables are directly abandoned in the cable trench or the entire cable is pulled out.

[0003] However, the above methods all have defects. Directly abandoning the cables in the cable trench will cause the abandoned cables to accumulate and clog the trench. If the whole cable is pulled out, the friction between the cables during the extraction process is very large due to the long length of the whole cable (for example, hundreds of meters to thousands of meters) and the cables are stacked. The extraction process consumes manpower and material resources and is costly. It can be seen that the current method of handling abandoned cables has the problem of low efficiency in handling abandoned cables. Summary of the invention

[0004] Based on this, it is necessary to provide a cable line selection and extraction method, device, computer equipment, computer-readable storage medium and computer program product based on infrared temperature measurement, which can improve the processing efficiency of discarded cables in order to solve the above technical problems.

[0005] In a first aspect, an embodiment of the present application provides a cable line selection and extraction method based on infrared temperature measurement. The method comprises:

[0006] Determine the first and last terminals of the abnormal cable, connect any one of the first and last terminals to a standby power source, and connect the other terminal other than the one terminal to the grounding grid within the power station; the abnormal cable is a cable that is in the same cable trench with other cables that are working normally and has an abnormal working state;

[0007] Determine at least one point to be measured in the cable trench where the abnormal cable is located;

[0008] Within the preset power-on time, the temperature of all cables corresponding to the at least one point to be measured is measured based on an infrared thermometer to obtain a temperature change value of any cable among all the cables within the preset power-on time; the all cables include the abnormal cables and the cables working normally;

[0009] When a temperature change value of any of the cables during the preset power-on time satisfies a preset temperature rise condition, determining that any of the cables is an abnormal cable corresponding to the point to be tested;

[0010] The abnormal cable corresponding to the point to be tested is marked to obtain a marking result; the marking result is used to cut the abnormal cable to pull the cut abnormal cable out of the cable trench.

[0011] In one embodiment, the method further comprises:

[0012] At the end of the preset power-on time, the standby power supply corresponding to any one of the terminals is disconnected, and within the preset power-off time, the temperature of all cables corresponding to the at least one point to be measured is measured based on the infrared thermometer to obtain the temperature change value of any one of all the cables;

[0013] When the temperature change value of any of the cables within the preset power-off time meets the preset temperature drop condition, it is determined that any of the cables is the abnormal cable corresponding to the point to be measured.

[0014] In one embodiment, the method further comprises:

[0015] When the temperature change value of any cable within the preset power-on time meets the preset temperature rise condition, and the temperature change value of any cable within the preset power-off time meets the preset temperature drop condition, it is determined that any cable is the abnormal cable corresponding to the point to be measured.

[0016] In one embodiment, the method further comprises:

[0017] The satisfying of the preset temperature rise condition includes: among all the cables, the temperature change value of any of the cables within the preset power-on time is the largest, or the temperature change value of any of the cables within the preset power-on time is greater than a preset temperature rise threshold;

[0018] The preset temperature drop condition is met including: among all the cables, the temperature change value of any of the cables within the preset power-off time is the largest, or the temperature change value of any of the cables within the preset power-off time is greater than a preset temperature drop threshold.

[0019] In one of the embodiments, determining at least one point to be measured in the cable trench where the abnormal cable is located includes:

[0020] Obtaining the length of the cable trench occupied by the abnormal cable, obtaining the pre-divided length range and the number of preset points to be tested;

[0021] Based on the principle of average division, according to the number of the preset points to be tested and the length of the cable trench occupied by the abnormal cable, the length of each segmented cable is calculated;

[0022] In a case where the length of each segmented cable meets the pre-segmented length range, the at least one point to be measured is determined according to the length of each segmented cable.

[0023] In one embodiment, the determining of the at least one point to be measured according to the length of each segmented cable further comprises:

[0024] Based on the actual construction conditions of the cable trench occupied by the abnormal cable, the at least one point to be measured is adjusted to obtain the adjusted point to be measured.

[0025] In a second aspect, the present application also provides a cable line selection and extraction device based on infrared temperature measurement. The device comprises:

[0026] The abnormal cable terminal connection module is used to determine the first and last terminals of the abnormal cable, connect any one of the first and last terminals to the standby power supply, and connect the other terminal other than the one terminal to the grounding grid in the power station; the abnormal cable is a cable that is in the same cable trench with other cables that are working normally and has an abnormal working state;

[0027] A test point determination module, used to determine at least one test point in the cable trench where the abnormal cable is located;

[0028] A temperature measurement module, used to measure the temperature of all cables corresponding to the at least one point to be measured based on an infrared thermometer within a preset power-on time, and obtain a temperature change value of any cable among all the cables within the preset power-on time; the all cables include the abnormal cables and the cables that work normally;

[0029] An abnormal cable determination module for a point to be measured, which determines that any cable is an abnormal cable corresponding to the point to be measured when a temperature change value of any cable within the preset power-on time satisfies a preset temperature rise condition;

[0030] The cable marking module is used to mark the abnormal cable corresponding to the point to be tested to obtain a marking result; the marking result is used to cut the abnormal cable to pull the cut abnormal cable out of the cable trench.

[0031] In a third aspect, the present application further provides a computer device. The computer device includes a memory and a processor, the memory stores a computer program, and the processor implements the following steps when executing the computer program:

[0032] Determine the first and last terminals of the abnormal cable, connect any one of the first and last terminals to a standby power source, and connect the other terminal other than the one terminal to the grounding grid within the power station; the abnormal cable is a cable that is in the same cable trench with other cables that are working normally and has an abnormal working state;

[0033] Determine at least one point to be measured in the cable trench where the abnormal cable is located;

[0034] Within the preset power-on time, the temperature of all cables corresponding to the at least one point to be measured is measured based on an infrared thermometer to obtain a temperature change value of any cable among all the cables within the preset power-on time; the all cables include the abnormal cables and the cables working normally;

[0035] When a temperature change value of any of the cables during the preset power-on time satisfies a preset temperature rise condition, determining that any of the cables is an abnormal cable corresponding to the point to be tested;

[0036] The abnormal cable corresponding to the point to be tested is marked to obtain a marking result; the marking result is used to cut the abnormal cable to pull the cut abnormal cable out of the cable trench.

[0037] In a fourth aspect, the present application further provides a computer-readable storage medium. The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the following steps are implemented:

[0038] Determine the first and last terminals of the abnormal cable, connect any one of the first and last terminals to a standby power source, and connect the other terminal other than the one terminal to the grounding grid within the power station; the abnormal cable is a cable that is in the same cable trench with other cables that are working normally and has an abnormal working state;

[0039] Determine at least one point to be measured in the cable trench where the abnormal cable is located;

[0040] Within the preset power-on time, the temperature of all cables corresponding to the at least one point to be measured is measured based on an infrared thermometer to obtain a temperature change value of any cable among all the cables within the preset power-on time; the all cables include the abnormal cables and the cables working normally;

[0041] When a temperature change value of any of the cables during the preset power-on time satisfies a preset temperature rise condition, determining that any of the cables is an abnormal cable corresponding to the point to be tested;

[0042] The abnormal cable corresponding to the point to be tested is marked to obtain a marking result; the marking result is used to cut the abnormal cable to pull the cut abnormal cable out of the cable trench.

[0043] In a fifth aspect, the present application further provides a computer program product. The computer program product includes a computer program, and when the computer program is executed by a processor, the following steps are implemented:

[0044] Determine the first and last terminals of the abnormal cable, connect any one of the first and last terminals to a standby power source, and connect the other terminal other than the one terminal to the grounding grid within the power station; the abnormal cable is a cable that is in the same cable trench with other cables that are working normally and has an abnormal working state;

[0045] Determine at least one point to be measured in the cable trench where the abnormal cable is located;

[0046] Within the preset power-on time, the temperature of all cables corresponding to the at least one point to be measured is measured based on an infrared thermometer to obtain a temperature change value of any cable among all the cables within the preset power-on time; the all cables include the abnormal cables and the cables working normally;

[0047] When a temperature change value of any of the cables during the preset power-on time satisfies a preset temperature rise condition, determining that any of the cables is an abnormal cable corresponding to the point to be tested;

[0048] The abnormal cable corresponding to the point to be tested is marked to obtain a marking result; the marking result is used to cut the abnormal cable to pull the cut abnormal cable out of the cable trench.

[0049] The above-mentioned cable line selection and extraction method, device, computer equipment, storage medium and computer program product based on infrared temperature measurement first determine the first and last terminals of the abnormal cable, connect the first and last terminals to the standby power supply and the grounding network in the station, and then determine at least one point to be measured in the cable trench where the abnormal cable is located, and then within the preset power-on time, based on the infrared thermometer, measure the temperature of all cables corresponding to at least one point to be measured, and obtain the temperature change value of any cable among all cables within the preset power-on time, and then, if the temperature change value of any cable within the preset power-on time meets the preset temperature rise condition, determine any cable as the abnormal cable corresponding to the point to be measured, and finally mark the abnormal cable corresponding to the point to be measured, obtain the marking result, and cut and extract the abnormal cable; by means of temperature measurement and comparison, the abandoned cable at the point to be divided can be accurately identified, and the abandoned cable in the cable trench can be accurately identified, and the abandoned cable can be cut and extracted section by section, which greatly reduces the difficulty and cost of cable extraction in the cable trench and improves the processing efficiency of the abandoned cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related technologies, the drawings required for use in the embodiments or the related technical descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0051] FIG1 is an application environment diagram of a cable line selection and extraction method based on infrared temperature measurement in one embodiment;

[0052] Figure 2 A schematic diagram of a process flow of a cable line selection and extraction method based on infrared temperature measurement in one embodiment;

[0053] Figure 3 A schematic diagram of a flow chart of a cable line selection and extraction method based on infrared temperature measurement in another embodiment;

[0054] Figure 4 It is a schematic diagram of the overall process of a cable line selection and extraction method based on infrared temperature measurement in one embodiment;

[0055] Figure 5 It is a structural block diagram of a cable line selection and extraction device based on infrared temperature measurement in one embodiment;

[0056] FIG. 6 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0057] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0058] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant laws, regulations and standards of relevant countries and regions.

[0059] In one embodiment, as shown in FIG1 , a cable line selection and extraction method based on infrared temperature measurement is provided. This embodiment uses the method applied to a terminal as an example. It can be understood that the method can also be applied to a server, and can also be applied to a system including a terminal and a server, and is implemented through the interaction between the terminal and the server. In this embodiment, the method includes the following steps:

[0060] S201, determine the first and last terminals of the abnormal cable, connect any one of the first and last terminals to a standby power source, and connect the other terminal except any one of the terminals to a grounding grid within the power station.

[0061] The abnormal cable is a cable in the same cable trench as other cables in normal operation and has abnormal working status. Specifically, the abnormal cable can be an abandoned cable generated during operation and maintenance due to cable damage or station expansion and reconstruction. The current output by the standby power supply can be a direct current of 100A.

[0062] Exemplarily, one end of the two terminals at the head and tail of the abnormal cable is connected to the grounding grid in the station, and the other end is connected to a DC current source.

[0063] Among them, the in-station grounding grid refers to the general term for a grounding body in a converter station or substation, which is composed of multiple metal grounding electrodes buried at a certain depth underground and connected to each other by conductors to form a mesh structure.

[0064] S202: Determine at least one point to be measured in the cable trench where the abnormal cable is located.

[0065] The points to be tested refer to the points preset in the cable trench where temperature testing and cable segmentation are to be performed.

[0066] S203, within a preset power-on time, using an infrared thermometer to measure the temperature of all cables corresponding to at least one point to be measured, and obtain a temperature change value of any cable among all the cables within the preset power-on time.

[0067] Among them, the preset power-on time refers to the time from the start of power-on to the end of power-on, for example, the preset power-on time can be 1 hour, and the temperature change value within the preset power-on time can be the temperature value at multiple time points within the preset power-on time and the temperature change value between the temperature values. For example, the temperature can be measured once when power is turned on and once at the end of power-on, and the difference between the two measured temperatures is the temperature change value.

[0068] Among them, all cables include abnormal cables and cables that work normally. When measuring the temperature of the point to be measured, there are multiple cables in the current groove of the measuring point. In some cases, the staff cannot directly know which one is the discarded cable that needs to be marked and divided. Therefore, step S203 needs to measure the temperature of all cables to use the measurement results to determine which one is the discarded cable at the point to be measured.

[0069] For example, at each measuring point, use an infrared thermometer to measure the surface temperature of each cable in the cable trench, record the results, turn on the DC current source, inject DC current into the cable to be discarded, and the DC current is recommended to be greater than 100A. Wait for a period of time, preferably 1 hour, to allow the DC current to increase the temperature of the cable to be discarded; use an infrared thermometer at each measuring point to record the surface temperature of each cable in the cable trench again, and record the results. The difference between the two measurements is taken as the temperature change value.

[0070] S204: When the temperature change value of any cable within the preset power-on time satisfies the preset temperature rise condition, determine that any cable is an abnormal cable corresponding to the point to be tested.

[0071] The preset temperature rise condition may be: among all cables, the temperature change value of any cable within the preset power-on time is the largest, or the temperature change value of any cable within the preset power-on time is greater than the preset temperature rise threshold. For example, the cable with a larger temperature rise after applying the DC current is determined to be a cable to be discarded.

[0072] S205, marking the abnormal cables corresponding to the test points to obtain marking results.

[0073] The marking result is used to cut the abnormal cable so as to pull the cut abnormal cable out of the cable trench.

[0074] Exemplarily, the cables to be discarded are marked at each measuring point, cut at each measuring point, and removed section by section.

[0075] In the above-mentioned cable line selection and extraction method based on infrared temperature measurement, firstly, the first and last terminals of the abnormal cable are determined, and the first and last terminals are connected to the standby power supply and the grounding grid in the station, and then at least one point to be measured is determined in the cable trench where the abnormal cable is located, and then within the preset power-on time, the temperature of all cables corresponding to at least one point to be measured is measured based on the infrared thermometer, and the temperature change value of any cable among all cables within the preset power-on time is obtained, and then when the temperature change value of any cable within the preset power-on time meets the preset temperature rise condition, any cable is determined to be the abnormal cable corresponding to the point to be measured, and finally the abnormal cable corresponding to the point to be measured is marked to obtain the marking result, so as to cut and extract the abnormal cable; by means of temperature measurement and comparison, the abandoned cable at the point to be divided can be accurately identified, and the abandoned cable in the cable trench can be accurately identified, and the abandoned cable can be cut and extracted section by section, which greatly reduces the difficulty and cost of cable extraction in the cable trench and improves the processing efficiency of the abandoned cable.

[0076] In one of the embodiments, the method also includes: at the end of the preset power-on time, disconnecting the standby power supply corresponding to any terminal, and within the preset power-off time, measuring the temperature of all cables corresponding to at least one point to be measured based on an infrared thermometer to obtain the temperature change value of any cable among all the cables; when the temperature change value of any cable within the preset power-off time meets the preset cooling condition, determining that any cable is an abnormal cable corresponding to the point to be measured.

[0077] The preset power-off time refers to the time for power-off after the power-on is ended, which can be 1 hour.

[0078] The preset temperature drop conditions include: among all cables, the temperature change value of any cable within the preset power-off time is the largest, or the temperature change value of any cable within the preset power-off time is greater than the preset temperature drop threshold.

[0079] For example, at each measuring point, the surface temperature of each cable in the cable trench is recorded again with an infrared thermometer, and the result is recorded. The DC power supply is turned off and a period of time is waited, preferably 1 hour. The surface temperature of the cable trench is recorded with an infrared thermometer at each measuring point, and the result is recorded. Based on the above two temperature measurements, the cable temperature change is obtained, and the cable that has dropped the most in temperature after turning off the DC power supply is determined to be the cable that needs to be discarded.

[0080] In this embodiment, first, at the end of the preset power-on time, the standby power supply corresponding to any terminal is disconnected, and within the preset power-off time, the temperature of all cables corresponding to at least one test point is measured based on an infrared thermometer to obtain the temperature change value of any cable among all the cables, and then, when the temperature change value of any cable within the preset power-off time meets the preset cooling condition, any cable is determined to be an abnormal cable corresponding to the test point, and discarded cables are identified through the temperature drop rate, thereby improving the diversity of discarded cable identification.

[0081] In one of the embodiments, the method also includes: when the temperature change value of any cable within the preset power-on time meets the preset heating condition, and the temperature change value of any cable within the preset power-off time meets the preset cooling condition, determining that any cable is an abnormal cable corresponding to the test point.

[0082] For example, either one of the two conditions, "temperature rises more after adding DC current" or "temperature drops more after turning off DC power", can be met. Alternatively, both conditions can be simultaneously met as a judgment criterion to improve the accuracy of discarded cable identification.

[0083] In this embodiment, the influence of the temperature rise during the power-on process and the temperature drop during the power-off process on the cable identification is considered at the same time, thereby improving the accuracy of the discarded cable identification.

[0084] In one of the embodiments, at least one point to be tested is determined in the cable trench where the abnormal cable is located, including: obtaining the length of the cable trench occupied by the abnormal cable, obtaining a pre-divided length range and a preset number of points to be tested; based on the principle of average division, according to the preset number of points to be tested and the length of the cable trench occupied by the abnormal cable, the length of each segmented cable is calculated; when the length of each segmented cable meets the pre-divided length range, at least one point to be tested is determined according to the length of each segmented cable.

[0085] Among them, the length of the cable trench occupied by the abnormal cable is the total length of the abnormal cable to be divided. The pre-divided length range can be 100 meters to 300 meters. The number of preset points to be tested can be set according to the specific cable length. The calculated length of each segmented cable can be 200 meters.

[0086] Exemplarily, multiple measuring points are selected in the middle of the cable trench where the abandoned cables are located. The measurement points can be selected by, but not limited to, an even distribution method. The interval between the measurement points is recommended to be within 200 meters.

[0087] In this embodiment, the points to be tested are evenly arranged by an equal distribution method, which avoids the length of a certain section of the cable being too long after cutting, thereby improving the efficiency of extracting the waste cable after cutting.

[0088] In one of the embodiments, at least one point to be measured is determined according to the length of each segmented cable, and further includes: adjusting at least one point to be measured based on actual construction conditions of the cable trench occupied by the abnormal cable to obtain an adjusted point to be measured.

[0089] In this embodiment, combined with the division result of the equal division method, the points to be measured can be dynamically adjusted according to the actual construction conditions, thereby improving the convenience of the actual cutting and extraction process.

[0090] In another embodiment, Figure 3 As shown, a cable line selection and extraction method based on infrared temperature measurement is provided, comprising the following steps:

[0091] S301, obtaining the length of the cable trench occupied by the abnormal cable, obtaining the pre-divided length range and the number of preset points to be tested.

[0092] S302, based on the principle of average division, according to the number of preset points to be tested and the length of the cable trench occupied by the abnormal cable, the length of each segmented cable is calculated.

[0093] S303: When the length of each segmented cable meets the pre-segmented length range, determine at least one point to be measured according to the length of each segmented cable.

[0094] S304, adjusting at least one point to be measured based on actual construction conditions of the cable trench occupied by the abnormal cable to obtain an adjusted point to be measured.

[0095] S305, when the temperature change value of any cable within the preset power-on time meets the preset temperature rise condition, determine that any cable is an abnormal cable corresponding to the point to be tested.

[0096] S306: When the temperature change value of any cable within the preset power-off time satisfies the preset temperature drop condition, determine that any cable is an abnormal cable corresponding to the point to be tested.

[0097] S307, when the temperature change value of any cable within the preset power-on time meets the preset temperature rise condition, and the temperature change value of any cable within the preset power-off time meets the preset temperature drop condition, determine that any cable is an abnormal cable corresponding to the test point.

[0098] It should be noted that the specific limitations of the above steps can be found in the above specific limitations of a cable line selection and extraction method based on infrared temperature measurement, which will not be repeated here.

[0099] During the operation and maintenance process, cables may need to be discarded due to cable damage or station expansion and reconstruction. Cable damage includes visible damage to the cable skin and cable breakage, as well as cable discarding due to the replacement of cable-related equipment and expiration of service life. Station expansion and reconstruction refers to the discarding of cables due to changes in the power station.

[0100] The current treatment methods include direct cable abandonment and whole cable withdrawal. The direct cable abandonment method causes the accumulation of discarded cables in the cable trench, which blocks the cable trench and is not conducive to the operation and maintenance of the cable trench in the station. In the whole cable withdrawal method, due to the stacking of cables in the cable trench, the friction between the cables during the withdrawal process is extremely large, and the length to be withdrawn is very long, so the withdrawal consumes manpower and material resources and is costly.

[0101] Based on this, the embodiment of the present application provides a cable line selection and extraction method based on infrared temperature measurement. To facilitate the understanding of those skilled in the art, Figure 4 A schematic diagram of the overall process of cable line selection and extraction method based on infrared temperature measurement is provided. Figure 4 , a cable line selection and extraction method based on infrared temperature measurement is described in detail with a specific embodiment. It is worth understanding that the following description is only an exemplary description, and not a specific limitation of the application.

[0102] The cable line selection and extraction method based on infrared temperature measurement provided in the present application can identify cables that need to be discarded in the cable trench and extract them section by section. The operation is simple and the difficulty and cost of extracting cables from the cable trench are greatly reduced.

[0103] The cable line selection and extraction method based on infrared temperature measurement provided in this application specifically includes the following steps:

[0104] Step (1): Find the two ends of the cable to be discarded (known), connect one end to the station grounding grid, and connect the other end to the DC current source. Station grounding grid: A general term for a grounding body in a converter station or substation that consists of multiple metal grounding electrodes buried at a certain depth underground and conductors connecting these grounding electrodes to form a mesh structure.

[0105] Step (2): Select multiple measurement points in the middle of the cable trench where the abandoned cable is located. The measurement points can be selected by, but not limited to, equal distribution. The interval between the measurement points is recommended to be within 200 meters.

[0106] It should be noted that the equal division method can prevent a certain section of the cable from being too long after being divided, as too long will affect the cutting and extraction and reduce the extraction efficiency.

[0107] Step (3): Use an infrared thermometer to measure the surface temperature of each cable in the cable trench at each measuring point and record the results.

[0108] Step (4): Turn on the DC current source and inject DC current into the cable to be discarded. The DC current is recommended to be greater than 100A. Wait for a period of time, preferably 1 hour, to allow the DC current to increase the temperature of the cable to be discarded.

[0109] Step (5): Use an infrared thermometer to record the surface temperature of each cable in the cable trench at each measuring point and record the results.

[0110] Step (6): Turn off the DC power supply and wait for a while, 1 hour is recommended.

[0111] Step (7): Use an infrared thermometer to record the surface temperature inside the cable trench at each measuring point and record the results.

[0112] Step (8): Compare the temperature changes of each cable in step (3), step (5), and step (7). The cable that has a greater temperature rise after adding DC current and a greater temperature drop after turning off the DC power supply is the cable that needs to be discarded. Mark the cables that need to be discarded at each measuring point.

[0113] The reason for the rapid temperature change is that only the abandoned cables are energized, while the other cables are in normal operation. The 100A current setting is based on experience. Under this setting, the current flowing is often higher than that of the normally operating cables, so their temperature changes faster. After the power is cut off, the other cables are still in operation, so the temperature of the abandoned cables also drops quickly.

[0114] It should be noted that either of the two conditions, "temperature rises more after adding DC current" and "temperature drops more after turning off DC power", can be met. The two conditions can also be met at the same time as the judgment criteria to improve the accuracy of discarded cable identification.

[0115] Step (9): Cut the cables to be discarded at each measuring point and remove them section by section.

[0116] The cable line selection and extraction method based on infrared temperature measurement provided in the present application can realize the accurate identification of abandoned cables in the cable trench, and can realize the extraction of the abandoned cables section by section after cutting, thus greatly reducing the difficulty and cost of extracting cables from the cable trench.

[0117] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0118] Based on the same inventive concept, the embodiment of the present application also provides a cable line selection and extraction device based on infrared temperature measurement for implementing the cable line selection and extraction method based on infrared temperature measurement involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in one or more embodiments of the cable line selection and extraction device based on infrared temperature measurement provided below can refer to the limitations of the cable line selection and extraction method based on infrared temperature measurement above, and will not be repeated here.

[0119] In one embodiment, Figure 5 As shown, a cable line selection and extraction device based on infrared temperature measurement is provided, comprising: an abnormal cable terminal connection module 501, a to-be-measured point determination module 502, a preset power-on time 503, an abnormal cable determination module 504 at the to-be-measured point, and a cable marking module 505, wherein:

[0120] The abnormal cable terminal connection module 501 is used to determine the first and last terminals of the abnormal cable, connect any one of the first and last terminals to the standby power supply, and connect the other terminal except any one terminal to the grounding grid in the power station; the abnormal cable is a cable that is in the same cable trench with other cables that are working normally and has an abnormal working state;

[0121] The test point determination module 502 is used to determine at least one test point in the cable trench where the abnormal cable is located;

[0122] The temperature measurement module 503 is used to measure the temperature of all cables corresponding to at least one point to be measured based on an infrared thermometer within a preset power-on time, and obtain the temperature change value of any cable among all cables within the preset power-on time; all cables include abnormal cables and cables in normal operation;

[0123] The abnormal cable determination module 504 of the test point determines that any cable is an abnormal cable corresponding to the test point when the temperature change value of any cable within the preset power-on time meets the preset temperature rise condition;

[0124] The cable marking module 505 is used to mark the abnormal cables corresponding to the test points to obtain marking results; the marking results are used to cut the abnormal cables to remove the cut abnormal cables from the cable trench.

[0125] In one of the embodiments, the device is used to: disconnect the standby power supply corresponding to any terminal at the end of the preset power-on time, and measure the temperature of all cables corresponding to at least one point to be measured based on an infrared thermometer within the preset power-off time to obtain the temperature change value of any cable among all the cables; when the temperature change value of any cable within the preset power-off time meets the preset cooling condition, determine that any cable is an abnormal cable corresponding to the point to be measured.

[0126] In one of the embodiments, the device is used to: determine that any cable is an abnormal cable corresponding to the test point when the temperature change value of any cable within the preset power-on time meets the preset heating condition, and the temperature change value of any cable within the preset power-off time meets the preset cooling condition.

[0127] In one embodiment, the device is used to: meet the preset temperature rise condition including: among all cables, any cable has the largest temperature change value within the preset power-on time, or any cable has a temperature change value within the preset power-on time that is greater than a preset temperature rise threshold; meet the preset temperature drop condition including: among all cables, any cable has the largest temperature change value within the preset power-off time, or any cable has a temperature change value within the preset power-off time that is greater than a preset temperature drop threshold.

[0128] In one embodiment, the device is used to: obtain the length of the cable trench occupied by the abnormal cable, obtain the pre-divided length range and the preset number of points to be tested; based on the principle of average division, according to the preset number of points to be tested and the length of the cable trench occupied by the abnormal cable, calculate the length of each segment of the cable after division; when the length of each segment of the cable meets the pre-divided length range, determine at least one point to be tested according to the length of each segment of the cable after division.

[0129] In one of the embodiments, the device is used to: adjust at least one point to be measured based on the actual construction conditions of the cable trench occupied by the abnormal cable to obtain an adjusted point to be measured.

[0130] Each module in the above-mentioned cable line selection and extraction device based on infrared temperature measurement can be implemented in whole or in part by software, hardware and their combination. Each of the above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory in the computer device in the form of software, so that the processor can call and execute the operations corresponding to each of the above modules.

[0131] In one embodiment, a computer device is provided, which may be a terminal, and its internal structure diagram may be shown in FIG6. The computer device includes a processor, a memory, an input / output interface, a communication interface, a display unit, and an input device. The processor, the memory, and the input / output interface are connected via a system bus, and the communication interface, the display unit, and the input device are connected to the system bus via the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The input / output interface of the computer device is used to exchange information between the processor and an external device. The communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be implemented through WIFI, a mobile cellular network, NFC (near field communication) or other technologies. When the computer program is executed by the processor, a cable line selection and extraction method based on infrared temperature measurement is implemented.

[0132] Those skilled in the art will understand that the structure shown in FIG. 6 is merely a block diagram of a partial structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than shown in the figure, or combine certain components, or have a different arrangement of components.

[0133] In one embodiment, a computer device includes a memory and a processor. The memory stores a computer program. When the processor executes the computer program, the steps in the above method embodiments are implemented.

[0134] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps in the above-mentioned method embodiments are implemented.

[0135] In one embodiment, a computer program product is provided, including a computer program, which implements the steps in the above method embodiments when executed by a processor.

[0136] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., but are not limited to this.

[0137] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0138] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A cable line selection and extraction method based on infrared temperature measurement, characterized in that: The method comprises: Determine the first and last terminals of the abnormal cable, connect any one of the first and last terminals to a standby power source, and connect the other terminal other than the one terminal to the grounding grid within the power station; the abnormal cable is a cable that is in the same cable trench with other cables that are working normally and has an abnormal working state; Determine at least one point to be measured in the cable trench where the abnormal cable is located; Within the preset power-on time, the temperature of all cables corresponding to the at least one point to be measured is measured based on an infrared thermometer to obtain a temperature change value of any cable among all the cables within the preset power-on time; the all cables include the abnormal cables and the cables working normally; When a temperature change value of any of the cables during the preset power-on time satisfies a preset temperature rise condition, determining that any of the cables is an abnormal cable corresponding to the point to be tested; The abnormal cable corresponding to the point to be tested is marked to obtain a marking result; the marking result is used to cut the abnormal cable to pull the cut abnormal cable out of the cable trench.

2. The method according to claim 1, characterized in that The method further comprises: At the end of the preset power-on time, the standby power supply corresponding to any one of the terminals is disconnected, and within the preset power-off time, the temperature of all cables corresponding to the at least one point to be measured is measured based on the infrared thermometer to obtain the temperature change value of any one of all the cables; When the temperature change value of any of the cables within the preset power-off time meets the preset temperature drop condition, it is determined that any of the cables is the abnormal cable corresponding to the point to be measured.

3. The method according to claim 2, characterized in that The method further comprises: When the temperature change value of any cable within the preset power-on time meets the preset temperature rise condition, and the temperature change value of any cable within the preset power-off time meets the preset temperature drop condition, it is determined that any cable is the abnormal cable corresponding to the point to be measured.

4. The method according to any one of claims 2 or 3, characterized in that The method further comprises: The satisfying of the preset temperature rise condition includes: among all the cables, the temperature change value of any of the cables within the preset power-on time is the largest, or the temperature change value of any of the cables within the preset power-on time is greater than a preset temperature rise threshold; The preset temperature drop condition is met including: among all the cables, the temperature change value of any of the cables within the preset power-off time is the largest, or the temperature change value of any of the cables within the preset power-off time is greater than a preset temperature drop threshold.

5. The method according to claim 1, characterized in that The step of determining at least one point to be measured in the cable trench where the abnormal cable is located comprises: Obtaining the length of the cable trench occupied by the abnormal cable, obtaining the pre-divided length range and the number of preset points to be tested; Based on the principle of average division, according to the number of the preset points to be tested and the length of the cable trench occupied by the abnormal cable, the length of each segmented cable is calculated; In a case where the length of each segmented cable meets the pre-segmented length range, the at least one point to be measured is determined according to the length of each segmented cable.

6. The method according to claim 5, characterized in that The step of determining the at least one point to be measured according to the length of each segmented cable further comprises: Based on the actual construction conditions of the cable trench occupied by the abnormal cable, the at least one point to be measured is adjusted to obtain the adjusted point to be measured.

7. A cable line selection and extraction device based on infrared temperature measurement, characterized in that: The device comprises: The abnormal cable terminal connection module is used to determine the first and last terminals of the abnormal cable, connect any one of the first and last terminals to the standby power supply, and connect the other terminal other than the one terminal to the grounding grid in the power station; the abnormal cable is a cable that is in the same cable trench with other cables that are working normally and has an abnormal working state; A test point determination module, used to determine at least one test point in the cable trench where the abnormal cable is located; A temperature measurement module, used to measure the temperature of all cables corresponding to the at least one point to be measured based on an infrared thermometer within a preset power-on time, and obtain a temperature change value of any cable among all the cables within the preset power-on time; the all cables include the abnormal cables and the cables that work normally; An abnormal cable determination module for a point to be measured, which determines that any cable is an abnormal cable corresponding to the point to be measured when a temperature change value of any cable within the preset power-on time satisfies a preset temperature rise condition; The cable marking module is used to mark the abnormal cable corresponding to the point to be tested to obtain a marking result; the marking result is used to cut the abnormal cable to pull the cut abnormal cable out of the cable trench.

8. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 6 are implemented.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

Images