An AI-based cable laying method

Abstract

The present invention relates to the technical field of cable laying, and in particular to an AI-based cable laying method, which includes simulating the actual working conditions of the cable and extracting the electrical data and vibration data of each detection point of the cable during the entire simulation duration; determining whether each point is qualified one by one based on the abnormal duration ratio of a single point and the vibration simulation parameters, and when determining that a single point is abnormal, correcting the cable parameters based on the voltage integral parameter; analyzing the parameters of the simulated cable, and automatically adjusting the cable parameters of the abnormal point according to the analysis result, thereby improving the operation stability of the laid cable.

Description

Technical Field

[0001] The present invention relates to the technical field of cable laying, and particularly to an AI-based cable laying method. Background Art

[0002] With the continuous growth of power demand, cable laying projects have become increasingly complex. Traditional cable laying methods often rely on experience and it is difficult to comprehensively consider the impact of various factors on cable operation. The AI-based cable laying method aims to use advanced technical means to improve the scientificity and reliability of the laying plan and ensure the long-term stable operation of the cable.

[0003] Chinese Patent Publication No.: CN114006312B, discloses a BIM-based cable laying method, including: constructing a three-dimensional model of the construction site according to the parameters of the construction site; constructing three-dimensional models of multiple devices in the three-dimensional model of the construction site according to the parameters of the multiple devices arranged in the construction site; constructing a three-dimensional model of the cable laying carrier in the three-dimensional model of the construction site according to the parameters of the cable laying carrier and the starting position of the cable designed in advance; simulating the laying of the cable in the three-dimensional model of the cable laying carrier according to the parameters of the cable and the starting position of the cable designed in advance, so as to construct a three-dimensional model of the cable on the three-dimensional model of the cable laying carrier; according to the constructed three-dimensional model of the cable laying carrier and the three-dimensional model of the cable, performing construction on the cable laying carrier at the construction site and laying the cable on the cable laying carrier; It can be seen that the above technical solution has the following problems: it does not consider analyzing the parameters of the simulated cable, and does not consider automatically adjusting the cable parameters at abnormal points according to the analysis results, which affects the operation stability of the laid cable. Summary of the Invention

[0004] Therefore, the present invention provides an AI-based cable laying method to overcome the problems in the prior art that do not consider analyzing the parameters of the simulated cable, do not consider automatically adjusting the cable parameters at abnormal points according to the analysis results, and affect the operation stability of the laid cable.

[0005] To achieve the above object, the present invention provides an AI-based cable laying method, including:

[0006] S1, constructing a model, setting model parameters and cable parameters;

[0007] S2, simulating the model, traversing and detecting the cable line based on preset detection points, and after the simulation ends, extracting the electrical data and vibration data of each detection point within the entire simulation duration from the model;

[0008] S3, determining whether each point is qualified one by one based on the abnormal duration ratio of a single point and the vibration simulation parameters, including,

[0009] When determining the abnormality of a single point, the cable parameters are corrected based on the voltage integration parameter, including adjusting the laying depth, laying spacing or pipe thickness of the cable corresponding to the single point to the corresponding value; or, determining that the single point is qualified;

[0010] S4. After completing the determination or correction of each point, repeat steps S1 - S3 until it is determined that each point is qualified;

[0011] S5. Take the current cable parameters as the laying parameters of the cable.

[0012] Further, in S3, for a single point, determine whether the single point is qualified based on the proportion of the abnormal duration of the point, including:

[0013] Record the ratio of the cumulative duration of the abnormal voltage state of the single point to the total simulation duration as the proportion of the abnormal duration;

[0014] If the proportion of the abnormal duration is less than or equal to the first preset abnormal proportion, determine that the single point is qualified;

[0015] If the proportion of the abnormal duration is less than or equal to the second preset abnormal proportion and greater than the first preset abnormal proportion, determine whether the single point is qualified based on the vibration simulation parameter of the single point;

[0016] If the proportion of the abnormal duration is greater than the second preset abnormal proportion, determine that the single point is abnormal and correct the cable parameters based on the voltage integration parameter.

[0017] Further, determine whether the single point is qualified based on the vibration simulation parameter of the single point, including:

[0018] Record the ratio of the number of years with an average vibration greater than the preset vibration in each year to the total number of years of the simulation duration as the vibration simulation parameter;

[0019] If the vibration simulation parameter is less than or equal to the preset vibration simulation parameter, determine that the single point is abnormal and correct the cable parameters based on the voltage integration parameter;

[0020] If the vibration simulation parameter is greater than the preset vibration simulation parameter, adjust the first preset abnormal proportion to the corresponding value based on the vibration simulation parameter, and adjust the laying depth of the cable corresponding to the single point to the corresponding value based on the vibration simulation parameter.

[0021] Further, adjust the first preset abnormal proportion to the corresponding value based on the vibration simulation parameter, where

[0022] The increase amplitude of the first preset abnormal proportion is proportional to the vibration simulation parameter.

[0023] Further, adjust the laying depth of the cable corresponding to the single point to the corresponding value based on the vibration simulation parameter, where

[0024] The increase amplitude of the laying depth of the cable corresponding to a single point is proportional to the vibration simulation parameter.

[0025] Further, the cable parameters are corrected based on the voltage integration parameter, including:

[0026] A time-domain curve of voltage values is plotted based on the voltage values of each inspection period before and after the time node when the abnormal point occurs, and the integral of the calculated curve is recorded as the voltage integration parameter;

[0027] If the voltage integration parameter is less than or equal to the first preset integration parameter, the laying depth of the cable corresponding to a single point is adjusted to the corresponding value based on the vibration simulation parameter;

[0028] If the voltage integration parameter is less than or equal to the second preset integration parameter and greater than the first preset integration parameter, the cable parameters are corrected based on the voltage difference parameter;

[0029] If the voltage integration parameter is greater than the second preset integration parameter, the pipe material thickness of the cable duct corresponding to the single point is corrected according to the average soil humidity of the single point.

[0030] Further, the cable parameters are corrected based on the voltage difference parameter, including:

[0031] For a single voltage value time-domain curve, the voltage values at each time node are obtained, and the variance of each voltage value is determined as the voltage difference parameter;

[0032] If the voltage difference parameter is less than or equal to the preset voltage difference parameter, the laying spacing of the cable corresponding to a single point is adjusted to the corresponding value based on the maximum voltage value in the single voltage value time-domain curve;

[0033] If the voltage difference parameter is greater than the preset voltage difference parameter, the pipe material thickness of the cable duct corresponding to the single point is corrected according to the average soil humidity of the single point.

[0034] Further, the laying spacing of the cable corresponding to a single point is adjusted to the corresponding value based on the maximum voltage value in the single voltage value time-domain curve, where

[0035] The increase amplitude of the laying spacing is inversely proportional to the maximum voltage value.

[0036] Further, the pipe material thickness of the cable duct corresponding to the single point is corrected according to the average soil humidity of the single point, where

[0037] The increase amplitude of the pipe material thickness is proportional to the average soil humidity.

[0038] Compared with the prior art, the beneficial effects of the present invention are as follows: the actual working conditions of the cable are simulated, and the electrical data and vibration data of each detection point of the cable are extracted during the entire simulation duration; based on the abnormal duration ratio of a single point and the vibration simulation parameters, it is determined whether each point is qualified one by one. When it is determined that a single point is abnormal, the cable parameters are corrected based on the voltage integral parameter; the parameters of the simulated cable are analyzed, and according to the analysis results, the cable parameters of the abnormal point are automatically adjusted, improving the operation stability of the laid cable.

[0039] Furthermore, a deduction simulation is carried out. The construction plan determined based on the model parameters and cable parameters is simulated for a preset duration, and the cable line is traversed and detected to determine the cable situation. For a single point, the abnormal duration ratio of this point is detected to determine whether the single point is qualified. The abnormal duration ratio represents the ratio of the cumulative duration in the abnormal voltage state to the total simulation duration. When the abnormal duration ratio is less than or equal to the first preset abnormal ratio, it is determined that the laying for this point meets the standard, and the service life of the cable at this point reaches the standard; when the abnormal duration ratio is less than or equal to the second preset abnormal ratio and greater than the first preset abnormal ratio, the vibration simulation parameter of each point is combined to comprehensively determine whether the single point is qualified. The vibration simulation parameter represents the influence of vibration on the cable; when the vibration simulation parameter is greater than the preset vibration simulation parameter, this point is in an area vulnerable to vibration influence, and the influence of vibration is underestimated. It is necessary to increase the burial depth to reduce the vibration influence and relax the determination standard for this point to more accurately evaluate the operation state of the cable, further improving the operation stability of the cable while improving the determination efficiency of the cable laying parameters.

[0040] Furthermore, a time-domain curve of the voltage value is plotted, and the voltage integral parameter is determined based on this curve. When the voltage integral parameter is less than or equal to the first preset integral parameter, the integral small voltage gradually decreases under the condition of small fluctuations. In this case, due to vibration problems, physical damage is caused to the cable. Continuous vibration causes the conductor of the cable to gradually break. As time goes by, the cross-sectional area of the conductor gradually decreases, and the resistance increases. According to Ohm's law, when the current is relatively stable, the increase in resistance causes the voltage to gradually decrease. At this time, a buffer is added, and the laying depth of the cable corresponding to a single point is adjusted to the corresponding value to reduce the influence of vibration on the cable. When the voltage integral parameter is greater than the second preset integral parameter, the integral value is large. In this case, the cable insulation is broken down due to corrosion. At the moment of breakdown, there is an extremely large voltage; when the cable insulation layer is affected by chemical corrosion and water intrusion, the insulation performance gradually decreases. At the moment of insulation breakdown, the current suddenly increases. According to Ohm's law, under the action of factors such as the internal resistance of the power supply, there will be an extremely large voltage change, resulting in a large area under the time-domain curve of the voltage value. At this time, the thickness of the pipe for the cable is determined according to the soil humidity where the point is located to enhance the protection of the cable, further improving the safety of cable laying.

[0041] Further, when the voltage integration parameter is less than or equal to the second preset integration parameter and greater than the first preset integration parameter, at this time, it is impossible to clearly determine the cause of the fault only based on the integral value. Multiple factors may cause this situation. Further analyze the change characteristics of the voltage values at each point in the curve, and correct the cable parameters based on the voltage difference parameter. When the voltage difference parameter is less than or equal to the preset voltage difference parameter, the voltage is relatively stable at this time. In this case, due to the poor heat dissipation conditions of the cable, the heat generated by the cable during operation cannot be dissipated in time, resulting in a continuous increase in the cable temperature. The long-term high-temperature environment accelerates the aging of the cable insulation material and reduces the insulation performance, thereby causing voltage abnormalities. At this time, adjust the laying spacing of the cable to improve heat dissipation. When the voltage difference parameter is greater than the preset voltage difference parameter, the voltage fluctuates at this time. In the precursor stage of insulation breakdown, the electric field distortion will cause partial discharge, resulting in voltage fluctuations, including periodic small fluctuations or spikes. At this time, it is determined that the breakdown is caused by corrosion. When the cable insulation layer is corroded by chemical substances or in a harsh environment for a long time, the insulation performance will decrease locally, forming weak points. Under the action of the electric field, partial discharge occurs at the weak points, resulting in voltage fluctuations; as the partial discharge continues to develop, it will eventually cause insulation breakdown; at this time, adjust the thickness of the pipe row according to the soil humidity to enhance the protection of the cable and reduce the impact of corrosion on the cable, further improving the operating stability of the laid cable. Description of the Drawings

[0042] Figure 1 It is a flowchart of the steps of the cable laying method based on AI according to an embodiment of the present invention;

[0043] Figure 2 It is a logical decision diagram for determining whether a single point is qualified based on the abnormal duration ratio of a single point according to an embodiment of the present invention. Detailed Embodiments

[0044] In order to make the purpose and advantages of the present invention clearer, the present invention will be further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0045] The preferred embodiments of the present invention will be described below with reference to the drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention and do not limit the protection scope of the present invention.

[0046] It should be noted that in the description of the present invention, the terms indicating directions or positional relationships such as "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0047] In addition, it should also be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] Please refer to Figure 1 and Figure 2 as shown, which are respectively the step flow chart of the AI-based cable laying method according to the embodiments of the present invention and the logical decision diagram for determining whether a single point is qualified based on the abnormal duration ratio of a single point; an AI-based cable laying method according to an embodiment of the present invention includes:

[0049] S1, constructing a model, setting model parameters and cable parameters;

[0050] S2, simulating the model, traversing the cable line based on preset detection points. After the simulation ends, extracting the electrical data and vibration data of each detection point within the entire simulation duration from the model;

[0051] S3, determining whether each point is qualified one by one based on the abnormal duration ratio of a single point and the vibration simulation parameters, including,

[0052] when determining that a single point is abnormal, correcting the cable parameters based on the voltage integration parameter, including adjusting the laying depth, laying spacing or pipe thickness of the cable corresponding to the single point to the corresponding value; or, determining that the single point is qualified;

[0053] S4, after completing the determination or correction of each point, repeating steps S1 - S3 until it is determined that all points are qualified;

[0054] S5, taking the current cable parameters as the cable laying parameters.

[0055] Specifically, the actual working conditions of the cable are simulated, and the electrical data and vibration data of each detection point of the cable are extracted during the entire simulation duration; based on the abnormal duration ratio of a single point and the vibration simulation parameters, it is determined whether each point is qualified one by one. When an abnormality of a single point is determined, the cable parameters are corrected based on the voltage integral parameter; the parameters of the simulated cable are analyzed, and the cable parameters of the abnormal point are automatically adjusted according to the analysis results, improving the operation stability of the laid cable.

[0056] Specifically, there is no limitation on the modeling tool. Modeling can be carried out through professional cable laying simulation software, such as CYMCAP, etc. It can be understood that it can be designed for cable laying projects, with a cable model library and environmental simulation functions to accurately simulate the electrical performance, thermal performance, and operating conditions of the cable under different environmental conditions. Various laying parameters and boundary conditions can be conveniently set to generate simulation results. This is the prior art and will not be elaborated here.

[0057] Specifically, the cable parameters include the cable laying path, cable model parameters, and laying method parameters; the input process of the cable model parameters is to input the detailed parameters of the cable, such as conductor material, cross-sectional area, insulation thickness, and dielectric constant, into the model. At the same time, the thermal parameters of the cable, such as thermal conductivity and specific heat capacity, are input to simulate the heat generation and heat dissipation parameters of the cable during operation. The laying method parameters include laying depth, pipe thickness, and laying spacing.

[0058] Specifically, the model parameters include environmental parameters and fault parameters; the environmental parameters include the temperature, humidity, and wind speed of the surrounding environment, which will affect the heat dissipation and insulation performance of the cable; for the underground environment, the density, porosity, and chemical composition of the soil are used to simulate the influence of the soil on the cable; for the input electromagnetic interference environment, the electromagnetic intensity and frequency; for the vibration source of the physical interference environment, it includes vibrations caused by construction activities, vibrations generated by transportation, and vibrations caused by daily human activities. The setting of the fault parameters includes setting the voltage and resistance ranges during normal operation and the voltage and resistance critical values for abnormal determination for open circuit faults.

[0059] Specifically, the process of simulating the model includes

[0060] Setting the simulation duration. Optionally, the simulation duration is 70 years;

[0061] Determining the detection period;

[0062] Simulate the changes in environmental factors, including the changes in temperature, humidity, and light factors in different seasons of the year, to dynamically simulate the cable operating environment; simulate the changes in the groundwater level: according to the geological and hydrological data of the laying area, set the rise and fall of the simulated groundwater level; simulate the changes in soil characteristics, and simulate the changes in the acidity and alkalinity of the soil. Simulate external disturbances, such as the impact of vibrations generated by nearby construction activities and transportation on the cable. Vibration can cause the fixing of the cable to become loose, poor contact at the joints, and even damage to the internal structure of the cable. Simulate the propagation of faults. When a break fault occurs at a point, simulate the propagation and impact of the fault in the cable line. Since the cable is an interconnected system, a fault at one point will cause changes in voltage and current at other points, thereby affecting the stability of the entire power transmission system. By simulating the fault propagation, analyze the chain reaction of the fault and its overall impact on the system.

[0063] Specifically, detection points can be set at certain intervals on the cable line. The distribution of the detection points should be uniform and cover the key parts of the cable, including the positions of cable joints, bends, and branches.

[0064] Specifically, in S3, for a single point, determine whether the single point is qualified based on the abnormal duration ratio of this point, including:

[0065] Record the ratio of the cumulative duration of the abnormal voltage state of a single point to the total simulation duration as the abnormal duration ratio;

[0066] If the abnormal duration ratio is less than or equal to the first preset abnormal ratio, it is determined that the single point is qualified;

[0067] If the abnormal duration ratio is less than or equal to the second preset abnormal ratio and greater than the first preset abnormal ratio, determine whether the single point is qualified based on the vibration simulation parameters of the single point;

[0068] If the abnormal duration ratio is greater than the second preset abnormal ratio, it is determined that the single point is abnormal, and the cable parameters are corrected based on the voltage integral parameters.

[0069] Specifically, the first preset abnormal ratio is selected in the range of [0.07, 0.11], and the second preset abnormal ratio is selected in the range of [0.15, 0.2].

[0070] Specifically, Un is the rated voltage of the cable. When the voltage U at the detection point satisfies U < 0.9Un or U > 1.1Un, it is determined that this point is in an abnormal voltage state.

[0071] Specifically, determine whether the single point is qualified based on the vibration simulation parameters of the single point, including:

[0072] Denote the ratio of the number of years with an average vibration greater than the preset vibration in each year to the total number of years in the simulation duration as the vibration simulation parameter;

[0073] If the vibration simulation parameter is less than or equal to the preset vibration simulation parameter, determine that a single point is abnormal, and correct the cable parameters based on the voltage integration parameter;

[0074] If the vibration simulation parameter is greater than the preset vibration simulation parameter, adjust the first preset abnormal proportion to the corresponding value based on the vibration simulation parameter, and adjust the laying depth of the cable corresponding to a single point to the corresponding value based on the vibration simulation parameter.

[0075] Specifically, the preset vibration simulation parameter Z0 is selected within the interval [0.62 mm / s, 0.74 mm / s].

[0076] Specifically, the average vibration is the average of the vibration amplitudes of a single point obtained in a single year, and the preset vibration is selected within the interval [3.7 mm / s, 5.2 mm / s].

[0077] Specifically, perform a deduction simulation, simulate the preset duration according to the construction plan determined by the model parameters and cable parameters, traverse and detect the cable line to determine the cable condition. For a single point, determine whether the single point is qualified by detecting the proportion of the abnormal duration of the point. The proportion of the abnormal duration represents the ratio of the cumulative duration in the abnormal voltage state to the total simulation duration. When the proportion of the abnormal duration is less than or equal to the first preset abnormal proportion, it is determined that the laying for this point meets the standard, and the service life of the cable at this point reaches the standard; when the proportion of the abnormal duration is less than or equal to the second preset abnormal proportion and greater than the first preset abnormal proportion, comprehensively determine whether the single point is qualified in combination with the vibration simulation parameter of the point. The vibration simulation parameter represents the influence of vibration on the cable; when the vibration simulation parameter is greater than the preset vibration simulation parameter, this point is in an area vulnerable to vibration, and the influence of vibration is underestimated. It is necessary to increase the burial depth to reduce the vibration influence and relax the judgment standard for this point to more accurately evaluate the operating state of the cable, while improving the determination efficiency of the cable laying parameters and further improving the operating stability of the cable.

[0078] Specifically, adjust the first preset abnormal proportion to the corresponding value based on the vibration simulation parameter, where

[0079] The increase amplitude of the first preset abnormal proportion is proportional to the vibration simulation parameter.

[0080] Specifically, adjust the laying depth of the cable corresponding to a single point to the corresponding value based on the vibration simulation parameter, where

[0081] The increase amplitude of the laying depth of the cable corresponding to a single point is proportional to the vibration simulation parameter.

[0082] In this embodiment, optionally,

[0083] Compare the vibration simulation parameter with a first preset simulation comparison threshold and a second preset simulation comparison threshold;

[0084] If the vibration simulation parameter is less than or equal to the first preset simulation comparison threshold, adjust the first preset abnormal proportion to 1.11 times the initial first preset abnormal proportion, and adjust the laying depth of the cable corresponding to a single point to 1.12 times the initial laying depth;

[0085] If the vibration simulation parameter is less than or equal to the second preset simulation comparison threshold and greater than the first preset simulation comparison threshold, adjust the first preset abnormal proportion to 1.18 times the initial first preset abnormal proportion, and adjust the laying depth of the cable corresponding to a single point to 1.21 times the initial laying depth;

[0086] If the vibration simulation parameter is greater than the second preset simulation comparison threshold, adjust the first preset abnormal proportion to 1.26 times the initial first preset abnormal proportion, and adjust the laying depth of the cable corresponding to a single point to 1.31 times the initial laying depth;

[0087] The first preset simulation comparison threshold is taken as 1.17Z0, and the second preset simulation comparison threshold is taken as 1.31Z0.

[0088] When the adjustment of the first preset abnormal proportion is completed, re-determine whether a single point is qualified based on the abnormal duration proportion of the single point. When the abnormal duration proportion is less than or equal to the adjusted first preset abnormal proportion, determine that the single point is qualified; when the abnormal duration proportion is greater than the adjusted first preset abnormal proportion, determine that the single point is abnormal, and correct the cable parameters based on the voltage integral parameter.

[0089] Specifically, correcting the cable parameters based on the voltage integral parameter includes:

[0090] Draw a voltage value time domain curve based on the voltage values of the previous and next inspection cycles at the time node when the abnormal point occurs, and record the integral of this curve as the voltage integral parameter;

[0091] If the voltage integral parameter is less than or equal to the first preset integral parameter, adjust the laying depth of the cable corresponding to a single point to the corresponding value based on the vibration simulation parameter;

[0092] If the voltage integral parameter is less than or equal to the second preset integral parameter and greater than the first preset integral parameter, correct the cable parameters based on the voltage difference parameter;

[0093] If the voltage integral parameter is greater than the second preset integral parameter, correct the pipe material thickness of the cable duct corresponding to the single point according to the average soil humidity of the single point.

[0094] Specifically, the first preset integral parameter is selected within the range of [4200 V·h, 5100 V·h], and the second preset integral parameter is selected within the range of [17400 V·h, 20000 V·h].

[0095] Specifically, the average soil humidity is the average value of the humidities obtained at a single point over the entire simulation duration.

[0096] Specifically, a time-domain curve of voltage values is plotted, and based on this curve, a voltage integral parameter is determined. When the voltage integral parameter is less than or equal to the first preset integral parameter, the integral of the small voltage gradually decreases under small fluctuations. In this case, due to vibration problems, physical damage occurs to the cable. The continuous vibration causes the conductor of the cable to gradually break. As time goes by, the cross-sectional area of the conductor gradually decreases, the resistance increases. According to Ohm's law, when the current is relatively stable, the increase in resistance causes the voltage to gradually decrease. At this time, buffering is increased, and the laying depth of the cable corresponding to a single point is adjusted to the corresponding value to reduce the impact of vibration on the cable. When the voltage integral parameter is greater than the second preset integral parameter, the integral value is large. In this case, due to cable corrosion, insulation breakdown occurs, and there is a huge voltage at the moment of breakdown. When the cable insulation layer is affected by chemical corrosion and water ingress, the insulation performance gradually decreases. At the moment of insulation breakdown, the current suddenly increases. According to Ohm's law, under the action of factors such as the internal resistance of the power supply, there will be a huge voltage change, resulting in a large area under the time-domain curve of the voltage value. At this time, the pipe thickness of the cable duct is determined according to the soil humidity underground where the point is located to enhance the protection of the cable and further improve the safety of cable laying.

[0097] Specifically, the cable parameters are corrected based on the voltage difference parameter, including:

[0098] For a single time-domain curve of voltage values, the voltage values at each time node are obtained, and the variance of the voltage values is determined as the voltage difference parameter;

[0099] If the voltage difference parameter is less than or equal to the preset voltage difference parameter, the laying spacing of the cable corresponding to a single point is adjusted to the corresponding value based on the maximum voltage value in the single time-domain curve of voltage values;

[0100] If the voltage difference parameter is greater than the preset voltage difference parameter, the pipe thickness of the cable duct corresponding to the cable is corrected according to the average soil humidity of a single point.

[0101] Specifically, the preset voltage difference parameter is selected within the range of [340 V², 500 V²].

[0102] Specifically, when the voltage integration parameter is less than or equal to the second preset integration parameter and greater than the first preset integration parameter, at this time, it is impossible to clearly determine the cause of the fault only based on the integral value. Multiple factors may cause this situation. Further analyze the change characteristics of the voltage values at each point in the curve, and correct the cable parameters based on the voltage difference parameter. When the voltage difference parameter is less than or equal to the preset voltage difference parameter, the voltage is relatively stable at this time. In this case, due to the poor heat dissipation conditions of the cable, the heat generated by the cable during operation cannot be dissipated in time, resulting in a continuous increase in the cable temperature. The long-term high-temperature environment accelerates the aging of the cable insulation material and reduces the insulation performance, thereby causing voltage abnormalities. At this time, adjust the laying spacing of the cable to improve heat dissipation. When the voltage difference parameter is greater than the preset voltage difference parameter, the voltage fluctuates at this time. In the precursor stage of insulation breakdown, the electric field distortion will cause partial discharge, resulting in voltage fluctuations, including periodic small fluctuations or spikes. At this time, it is determined that the breakdown is caused by corrosion. When the cable insulation layer is corroded by chemical substances or in a harsh environment for a long time, the insulation performance will decrease locally, forming weak points. Under the action of the electric field, partial discharge occurs at the weak points, resulting in voltage fluctuations; as the partial discharge continues to develop, it will eventually lead to insulation breakdown; at this time, adjust the thickness of the pipe according to the soil humidity to enhance the protection of the cable and reduce the impact of corrosion on the cable, further improving the operation stability of the laid cable.

[0103] Specifically, based on the maximum voltage value in the time-domain curve of a single voltage value, adjust the laying spacing of the cable corresponding to a single point to the corresponding value, where

[0104] The increase amplitude of the laying spacing is inversely proportional to the maximum voltage value.

[0105] In this embodiment, optionally,

[0106] Compare the maximum voltage value with the first preset voltage comparison value and the second preset voltage comparison value.

[0107] If the maximum voltage value is less than or equal to the first preset voltage comparison value, adjust the laying spacing to 1.29 times the initial laying spacing;

[0108] If the maximum voltage value is less than or equal to the second preset voltage comparison value and greater than the first preset voltage comparison value, adjust the laying spacing to 1.22 times the initial laying spacing;

[0109] If the maximum voltage value is greater than the second preset voltage comparison value, adjust the laying spacing to 1.14 times the initial laying spacing;

[0110] The first preset voltage comparison value is taken as 1.5Un, and the second preset voltage comparison value is taken as 3Un, where Un is the rated voltage of the cable corresponding to a single point.

[0111] Specifically, the pipe thickness of the cable conduit corresponding to a single point is corrected according to the average soil humidity, where

[0112] the increase amplitude of the pipe thickness is proportional to the average soil humidity.

[0113] In this embodiment, optionally,

[0114] the average soil humidity is compared with a first preset humidity and a second preset humidity;

[0115] If the average soil humidity is less than or equal to the first preset humidity, the pipe thickness is increased to 1.13 times the initial thickness;

[0116] If the average soil humidity is less than or equal to the second preset humidity and greater than the first preset humidity, the pipe thickness is increased to 1.19 times the initial thickness;

[0117] If the average soil humidity is greater than the second preset humidity, the pipe thickness is increased to 1.26 times the initial thickness;

[0118] The first preset humidity is 15%, and the second preset humidity is 50%.

[0119] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present invention.

[0120] The above are only the preferred embodiments of the present invention and are not used to limit the present invention; for those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An AI-based cable laying method, characterized in that, Including: S1. Build a model and set model parameters and cable parameters; S2. Conduct simulations on the model. Based on preset detection points, traverse and detect the cable line. After the simulation ends, extract the electrical data and vibration data of each detection point within the entire simulation duration from the model; S3. Determine whether each point is qualified one by one based on the abnormal duration ratio of a single point and the vibration simulation parameters; For a single point, determine whether the single point is qualified based on the abnormal duration ratio of this point, including: Record the ratio of the cumulative duration of the abnormal voltage state of a single point to the total simulation duration as the abnormal duration ratio; If the abnormal duration ratio is less than or equal to the first preset abnormal ratio, determine that the single point is qualified; If the abnormal duration ratio is less than or equal to the second preset abnormal ratio and greater than the first preset abnormal ratio, determine whether the single point is qualified based on the vibration simulation parameters of the single point; If the abnormal duration ratio is greater than the second preset abnormal ratio, determine that the single point is abnormal and correct the cable parameters based on the voltage integration parameter, including adjusting the laying depth, laying spacing, or pipe thickness of the cable corresponding to the single point to the corresponding value; Determine whether the single point is qualified based on the vibration simulation parameters of the single point, including: Record the ratio of the number of years with an average vibration greater than the preset vibration in each year to the total number of years of the simulation duration as the vibration simulation parameter; If the vibration simulation parameter is less than or equal to the preset vibration simulation parameter, determine that the single point is abnormal and correct the cable parameters based on the voltage integration parameter; If the vibration simulation parameter is greater than the preset vibration simulation parameter, adjust the first preset abnormal ratio to the corresponding value based on the vibration simulation parameter, and adjust the laying depth of the cable corresponding to the single point to the corresponding value based on the vibration simulation parameter; S4. After completing the determination or correction of each point, repeat steps S1 - S3 until it is determined that all points are qualified; S5. Take the current cable parameters as the cable laying parameters.

2. The AI - based cable laying method according to claim 1, wherein Adjust the first preset abnormal ratio to the corresponding value based on the vibration simulation parameter, where The increase amplitude of the first preset abnormal ratio is proportional to the vibration simulation parameter.

3. The AI - based cable laying method according to claim 2, wherein Adjust the laying depth of the cable corresponding to the single point to the corresponding value based on the vibration simulation parameter, where The increase amplitude of the laying depth of the cable corresponding to the single point is proportional to the vibration simulation parameter.

4. The AI - based cable laying method according to claim 3, wherein Correct the cable parameters based on the voltage integration parameter, including: Draw a voltage - value time - domain curve based on the voltage values of each inspection period before and after the time node when the abnormal point occurs obtained, and record the integral of this curve as the voltage integration parameter; If the voltage integration parameter is less than or equal to the first preset integration parameter, adjust the laying depth of the cable corresponding to the single point to the corresponding value based on the vibration simulation parameter; If the voltage integration parameter is less than or equal to the second preset integration parameter and greater than the first preset integration parameter, correct the cable parameters based on the voltage difference parameter; If the voltage integration parameter is greater than the second preset integration parameter, the pipe material thickness of the cable duct corresponding to the cable is corrected according to the average soil humidity of a single point.

5. The AI-based cable laying method according to claim 4, wherein correcting cable parameters based on voltage difference parameters includes: obtaining voltage values at each time node for a single voltage value time domain curve, and determining the variance of each voltage value as the voltage difference parameter; if the voltage difference parameter is less than or equal to the preset voltage difference parameter, adjusting the laying distance of the cable corresponding to a single point to a corresponding value based on the maximum voltage value in the single voltage value time domain curve; if the voltage difference parameter is greater than the preset voltage difference parameter, correcting the pipe material thickness of the cable duct corresponding to the cable according to the average soil humidity of a single point.

6. The AI-based cable laying method according to claim 5, wherein adjusting the laying distance of the cable corresponding to a single point to a corresponding value based on the maximum voltage value in the single voltage value time domain curve, wherein the increase amplitude of the laying distance is inversely proportional to the maximum voltage value.

7. The AI-based cable laying method according to claim 6, wherein correcting the pipe material thickness of the cable duct corresponding to the cable according to the average soil humidity of a single point, wherein the increase amplitude of the pipe material thickness is proportional to the average soil humidity.

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