Cable detecting and positioning system for transmission line

Abstract

The invention relates to the technical field of cable detection and positioning, and particularly discloses a cable detection and positioning system for a transmission line, which comprises an execution path analysis and detection module, a transmission line segmentation module, a detection line cable anomaly evaluation module and a cable anomaly positioning prompt module, the method comprises the following steps: firstly, analyzing an executable degree index corresponding to each detection path of a to-be-detected transmission line, screening to obtain an execution path of the to-be-detected transmission line, and secondly, analyzing an abnormal evaluation value of each detection line cable according to collected cable detection data to which the execution path of the to-be-detected transmission line belongs, and finally, carrying out cable abnormity positioning prompt on each detection line cable, so that the position of a cable fault can be rapidly and accurately detected, the fault removal time of the cable is shortened, the safety and efficiency of cable maintenance work are improved, and the accuracy and intelligence of cable detection and positioning are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of cable detection and positioning, and in particular to a cable detection and positioning system for transmission lines. Background Art

[0002] With the continuous development of cable technology and the continuous increase in cable fault types, the demand for cable detection has become complicated and diversified. Traditional cable detection and positioning often have problems such as difficult operation, inaccurate positioning and low efficiency. Therefore, it is necessary to introduce new cable detection and positioning technology to improve the intelligence, safety and efficiency of cable detection and positioning. The cable detection and positioning system studied in the present invention can select a more efficient and time-saving cable detection path, obtain the corresponding cable information of the transmission line, and then analyze and evaluate the corresponding cable information, thereby locating the fault position of the cable, so that the position of the cable fault can be detected quickly and accurately, the cable fault elimination time can be shortened, the reliability and stability of the transmission line can be improved, and at the same time, unnecessary cable maintenance costs and power outages can be reduced.

[0003] For example, a patent application with announcement number: CN109920601B discloses a power cable suitable for partial discharge detection and positioning. The power cable is a single-phase cable or a three-phase cable. The cable includes a shielding layer. A partial discharge signal lead is provided inside the cable. The shielding layer is evenly divided into N segmented shielding layers. Each segmented shielding layer is connected to a corresponding independent partial discharge signal lead to transmit an induced current for detecting partial discharge. Compared with the prior art, the above application can realize independent segmented release and transmission of partial discharge signals through segmented shielding layers and corresponding partial discharge signal leads, thereby reducing the difficulty of installation during detection and improving the accuracy of detection and positioning.

[0004] However, in the process of implementing the embodiments of the present application, it was found that the above technology has at least the following technical problems: when connecting the corresponding independent local discharge signal leads, the above application only considers the number and insulation of the relevant discharge signal leads, and ignores the signal data of the detection cable when it is in use, such as signal strength, signal frequency, and signal transmission rate. If these influencing parameters are not considered, the signal strength when detecting the cable will be unclear, and thus the cable information cannot be accurately obtained, and the accuracy of cable detection and positioning cannot be improved. Summary of the invention

[0005] Technical issues solved In view of the deficiencies in the prior art, the present invention provides a cable detection and positioning system for a transmission line, which solves the problems involved in the above background.

[0006] Technical Solution To achieve the above objectives, the present invention is implemented through the following technical solutions: a cable detection and positioning system for transmission lines, including an execution path analysis and screening module, which is used to obtain the associated information of each detection path of the transmission line to be detected, analyze the executable degree index corresponding to each detection path of the transmission line to be detected, and screen the execution path of the transmission line to be detected; a transmission line segmentation module, which is used to segment the transmission line to be detected according to equal cable lengths to obtain cables of each detection line; a detection line cable anomaly assessment module, which is used to collect cable detection data belonging to the execution path of the transmission line to be detected, thereby screening the cable detection data of each detection line cable, and analyzing the anomaly assessment value of each detection line cable; a cable anomaly positioning prompt module, which is used to provide cable anomaly positioning prompts for each detection line cable.

[0007] Furthermore, the cable abnormality location prompt is performed for each detection line cable, and the specific analysis process is: the abnormal evaluation value of each detection line cable is compared with a preset abnormal evaluation threshold value. If the abnormal evaluation value of a detection line cable is higher than the preset evaluation threshold value, the cable abnormality location is performed on the detection line cable, thereby counting the number of detection line cables that are higher than the preset abnormal evaluation threshold value and recording them as the line cables that need to be located, thereby providing a cable abnormality location prompt for each line cable that needs to be located.

[0008] Furthermore, the abnormality assessment value of each detection line cable is obtained by comprehensively analyzing the insulation degree assessment coefficient of each detection line cable, the corrosion degree assessment coefficient of each detection line cable and the mechanical stress degree assessment coefficient of each detection line cable.

[0009] Furthermore, the insulation assessment coefficient of each detection line cable, the specific data acquisition and analysis process is: based on the cable detection data of each detection line cable, wherein the cable detection data includes cable insulation detection data, cable corrosion detection data and cable mechanical force detection data; based on the cable insulation detection data of each detection line cable, extract the average dielectric constant, maximum dielectric strength and average dielectric loss of each detection line cable within a set cable detection cycle; extract the dielectric reference constant and dielectric loss reference value from the cable information library, and analyze the insulation assessment coefficient of each detection line cable.

[0010] Furthermore, the corrosion degree assessment coefficient of each detection line cable, the specific data acquisition and analysis process is: according to the cable corrosion degree detection data of each detection line cable, the surface treatment degree value and the maximum redox potential of each detection line cable within the set cable detection cycle are extracted, and the corrosion degree assessment coefficient of each detection line cable is analyzed.

[0011] Furthermore, the mechanical stress degree assessment coefficient of each detection line cable, the specific data acquisition and analysis process is: according to the cable mechanical stress detection data of each detection line cable, the maximum extrusion pressure, maximum tensile force and maximum stress of each detection line cable within the set cable detection cycle are extracted, and the extrusion limit force, tensile force allowable value and stress reference value are extracted from the cable information library to analyze the mechanical stress degree assessment coefficient of each detection line cable.

[0012] Furthermore, the specific analysis process of the execution path of the transmission line to be detected is as follows: the executable degree indexes corresponding to the detection paths of the transmission line to be detected are arranged in order from large to small, and the detection path corresponding to the executable degree index ranked first is extracted and recorded as the execution path, thereby screening and obtaining the execution path of the transmission line to be detected.

[0013] Furthermore, the executable degree index corresponding to each detection path of the transmission line to be detected is obtained by comprehensively evaluating the cable detection influence degree coefficient corresponding to each detection path of the transmission line to be detected, the detection signal influence degree coefficient corresponding to each detection path of the line to be detected, and the meteorological interference influence degree coefficient corresponding to each detection path of the transmission line to be detected, thereby obtaining the executable degree data corresponding to each detection path of the transmission line to be detected.

[0014] Furthermore, the executable degree index corresponding to each detection path of the transmission line to be detected is specifically analyzed in the following process: according to the associated information of each detection path of the transmission line to be detected, wherein the associated information includes cable detection associated information, detection signal associated information and meteorological interference associated information; according to the cable detection associated information of each detection path of the transmission line to be detected, the number of execution detection points corresponding to each detection path of the transmission line to be detected is extracted; the number of straight cable segments and the number of curved cable segments in the transmission line to be detected are obtained, and the curvature of the cable of the transmission line to be detected is obtained through ratio processing, thereby screening and obtaining the curvature of the cable corresponding to each detection path of the transmission line to be detected; the detection distance corresponding to each detection path of the transmission line to be detected is obtained , and extract the effective length of the cable of the transmission line to be detected from the cable information library, and obtain the effective detection length difference corresponding to each detection path of the transmission line to be detected through difference comparison processing; extract the number of execution detection points, the corresponding cable definition curvature and the effective detection definition length difference from the cable information library, and comprehensively analyze the cable detection influence coefficient corresponding to each detection path of the transmission line to be detected; according to the detection signal association information belonging to each detection path of the transmission line to be detected, and divide the set path detection cycle into each detection time point, thereby extracting the signal strength, signal transmission rate and signal frequency corresponding to each detection path of the transmission line to be detected at each detection time point, and comprehensively evaluate the detection signal influence coefficient corresponding to each detection path of the transmission line to be detected.

[0015] Furthermore, the meteorological interference influence degree index corresponding to each detection path of the transmission line to be detected, the specific data acquisition and analysis process is: according to the meteorological interference related information of each detection path of the transmission line to be detected, wherein the meteorological interference related information includes the ambient temperature and the electromagnetic interference intensity value at each detection time point, the surface temperature of the cable of the transmission line to be detected at each detection time point is obtained; the temperature allowable deviation value and the electromagnetic interference allowable intensity value are extracted from the cable information library, and the meteorological interference influence degree coefficient corresponding to each detection path of the transmission line to be detected is comprehensively analyzed.

[0016] Beneficial Effects The present invention has the following beneficial effects: (1) The present invention provides a cable detection and positioning system for transmission lines. First, the associated information of each detection path of the transmission line to be detected is obtained, and the executable degree index corresponding to each detection path of the transmission line to be detected is analyzed to screen and obtain the execution path of the transmission line to be detected. Secondly, according to the collected cable detection data of the execution path of the transmission line to be detected, the cable detection data of each detection line cable is screened and obtained, thereby analyzing the abnormal evaluation value of each detection line cable. Finally, the cable abnormality positioning prompt is given to each detection line cable, so that the location of the cable fault can be quickly and accurately detected, and the cable troubleshooting time is shortened, thereby improving the safety and efficiency of cable maintenance work, and improving the accuracy and intelligence of cable detection and positioning.

[0017] (2) The present invention obtains the associated information corresponding to each detection path of the transmission line to be detected, evaluates the cable detection influence coefficient, detection signal influence coefficient and meteorological interference influence coefficient corresponding to each detection path of the transmission line to be detected, and comprehensively analyzes the executable index corresponding to each detection path of the transmission line to be detected, thereby screening and obtaining the execution path of the transmission line to be detected, providing a more comprehensive data basis for subsequent cable abnormality positioning, and also improving the maintenance efficiency of the cable.

[0018] (3) The present invention uses the cable detection data of each detection line cable, wherein the cable detection data includes cable insulation detection data, cable corrosion detection data and cable mechanical stress detection data, to respectively evaluate the insulation degree assessment coefficient, corrosion degree assessment coefficient and mechanical stress degree assessment coefficient of each detection line cable, comprehensively obtain the abnormality assessment value of each detection line cable, and provide a cable abnormality positioning prompt, so as to more accurately obtain the specific situation of the cable abnormality, provide a more comprehensive data basis for cable abnormality positioning, thereby improving the accuracy of cable detection and positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is further described using the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the present invention. A person skilled in the art can obtain other drawings based on the following drawings without creative work.

[0020] Figure 1 It is a schematic diagram of the system module of the present invention. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0022] See also Figure 1 As shown, an embodiment of the present invention provides a technical solution: a cable detection and positioning system for a transmission line, comprising an execution path analysis and screening module, a transmission line segmentation module, a detection line cable anomaly assessment module, and a cable anomaly positioning prompt module.

[0023] The present invention provides a cable detection and positioning system for transmission lines, which also includes a cable information library, wherein the cable information library is used to store the number of detection points to be executed, the corresponding defined curvature of the cable, the effective length of the cable of the transmission line to be detected, the effective detection defined length difference, the temperature allowable deviation value, the electromagnetic interference allowable intensity value, the dielectric reference constant, the dielectric loss reference value, the extrusion limit force, the tensile force allowable value and the stress reference value.

[0024] The execution path analysis and screening module and the transmission line segmentation module are both connected to the detection line cable anomaly assessment module, the detection line cable anomaly assessment module is connected to the cable anomaly positioning prompt module, and the execution path analysis and screening module and the detection line cable anomaly assessment module are both connected to the cable information library.

[0025] The execution path analysis and screening module is used to obtain the associated information of each detection path of the transmission line to be detected, analyze the executable degree index corresponding to each detection path of the transmission line to be detected, and screen the execution path of the transmission line to be detected.

[0026] Specifically, the executable degree index corresponding to each detection path of the transmission line to be detected is analyzed in the following specific process: According to the associated information of each detection path of the transmission line to be detected, the associated information includes cable detection associated information, detection signal associated information and meteorological interference associated information.

[0027] According to the cable detection associated information of each detection path of the transmission line to be detected, the number of execution detection points corresponding to each detection path of the transmission line to be detected is extracted, wherein the number of execution detection points corresponding to each detection path can usually be obtained by counting and recording on-site measurements, using measuring tools such as tape measures, rangefinders, etc., to perform on-site measurements, count and record in detail along the path of the cable, or through some professional detection software and tools to obtain it. Some professional tools or software may provide the function of estimating the data volume.

[0028] The number of straight cable segments and the number of curved cable segments in the transmission line to be detected are obtained, and the curvature of the cable in the transmission line to be detected is obtained through ratio processing, thereby screening out the curvature of the cable corresponding to each detection path of the transmission line to be detected. The number of straight cable segments and the number of curved cable segments in the transmission line to be detected can be obtained by referring to installation drawings and documents. The installation drawings usually mark the path, length and curvature of the cable, or they can be obtained by using computer simulation software. These software can generate a three-dimensional model of the cable according to input parameters such as cable type, installation environment, etc., and display the distribution of straight segments and curved segments.

[0029] The detection distance corresponding to each detection path of the transmission line to be detected is obtained, and the effective length of the cable of the transmission line to be detected is extracted from the cable information library. The effective detection length difference corresponding to each detection path of the transmission line to be detected is obtained by difference comparison processing. The detection distance corresponding to each detection path can be obtained by field measurement and recording. Use measuring tools such as tape measures, rangefinders, etc. to perform field measurements along the path of the cable, and mark the starting and ending positions of each detection path.

[0030] The number of defined inspection points, the corresponding defined bending rate of the cable and the effective defined length difference of the inspection are extracted from the cable information library.

[0031] Comprehensively analyze the cable detection influence coefficients corresponding to each detection path of the transmission line to be detected. The cable detection influence coefficients corresponding to each detection path can be obtained through historical data analysis and a more accurate calculation method. The specific calculation method is: , in It is represented as the cable detection influence coefficient corresponding to the i-th detection path of the line to be detected. In this embodiment, in order to fully detect the transmission line, multiple detection paths are usually set. These may be carried out along different sections of the line, or start and end from different positions of the line. For each detection path, there are multiple specific execution detection points for detection. If the number of execution detection points corresponding to each detection path is too small, it may have a negative impact on the cable detection, including that the transmission line is not comprehensive, cannot be accurately detected, and the safety and reliability of its operation cannot be guaranteed; similarly, when detecting the transmission line to be detected, it is necessary to pay attention to the curvature of the cable on each detection path, so as to comprehensively evaluate the health status of the cable line. If the possible problems cannot be discovered and handled in time, it will also have a negative impact on the cable detection, including the decline of the performance and service life of the cable, and the excessive curvature may cause the wire inside the cable to break, and the quality of information transmission will be reduced; in addition, the excessive effective detection length difference will also have a negative impression on the cable detection, including that the line has not been fully detected, thereby increasing the potential risk; therefore, when detecting the cable, it is necessary to pay attention to the number of executions, the curvature of the cable and the effective inspection length difference to reduce the negative impact and improve the accuracy and reliability of the detection.

[0032] i is the number of each detection path, , n is the number of detection paths.

[0033] It represents the number of execution detection points corresponding to the i-th detection path of the transmission line to be detected, wherein the number of execution detection points corresponding to each detection path of the transmission line to be detected means that on each detection path, some specific points will be set for detection, and these points are the execution detection points. Various detection operations will be performed at these points, such as signal strength test, mechanical stress test, etc. For each detection path, there will be a corresponding number of execution detection points. The number of these detection points depends on many factors such as the complexity and length of the transmission line, the required effective detection length, etc.

[0034] It is represented as the execution detection point definition number, where the execution detection point definition number refers to the minimum value of the execution detection point.

[0035] It is represented as the curvature of the cable corresponding to the i-th detection path of the transmission line to be detected, wherein the curvature of the cable corresponding to each detection path of the transmission line to be detected refers to the fact that the cable may bend during the laying and use of the cable due to the limitations of the environment, terrain or installation conditions. The curvature is a parameter used to describe the degree of cable bending, which is usually related to the diameter and bending radius of the cable.

[0036] It is expressed as the corresponding defined curvature of the cable, wherein the corresponding defined curvature of the cable refers to the maximum value of the corresponding curvature of the cable.

[0037] It is expressed as the effective detection length difference corresponding to the i-th detection path of the transmission line to be detected, wherein the effective detection length difference corresponding to each detection path of the transmission line to be detected means that in the detection process of the transmission line, not all line lengths can be effectively detected, and the effective detection length refers to the actual detected line length. The actual detected line length is compared with the effective cable length extracted from the cable information library to obtain the effective detection length difference corresponding to each detection path.

[0038] It is expressed as the effective detection limit length difference, where the effective detection limit length difference refers to the maximum value of the effective detection length difference.

[0039] It is represented by the correction factor corresponding to the predefined number of execution detection points, Expressed as a correction factor corresponding to a predefined cable bending rate, It is expressed as a correction factor corresponding to the predefined effective detection length difference, and e is a natural constant.

[0040] According to the detection signal association information of each detection path of the transmission line to be detected, the set path detection period is divided into detection time points, thereby extracting the signal strength, signal transmission rate and signal frequency corresponding to each detection path of the transmission line to be detected at each detection time point, wherein the signal strength can be obtained by using a signal strength meter or a spectrum analyzer, which can directly measure and display the signal strength; the signal transmission rate can be obtained by using network performance testing tools, such as iperf, ping and other tools, which can send and receive data packets and calculate the transmission rate; the signal frequency can be obtained by an oscilloscope, and by setting the parameters of the oscilloscope, the waveform of the signal can be observed and its period or frequency can be measured.

[0041] Comprehensively evaluate the detection signal influence coefficient corresponding to each detection path of the transmission line to be detected. The detection signal influence coefficient corresponding to each detection path can be obtained by simulation analysis or by a more accurate calculation method. The specific calculation method is: , in It is represented as the detection signal influence coefficient corresponding to the i-th detection path of the line to be detected. In this embodiment, the signal strength at different detection time points may change due to various factors, such as environmental factors, equipment status, interference sources, etc. By detecting the signal strength of different paths, the changing trend of the signal strength can be understood, so as to evaluate the health of the line. Too small signal strength will reduce the stability of the signal strength; at different detection time points, the signal transmission rate may be affected by various factors such as line quality, equipment performance, network load, etc., which will have a negative impact on signal detection; during the detection process, the change of signal frequency can also help us understand the stability of the signal and possible interference problems. Too small signal frequency changes will have a negative impact on the detection signal, which may mean that the detection path is unreasonable; therefore, it is necessary to monitor and analyze these parameters at different detection time points, so that we can fully understand the performance of the transmission line, discover problems in time and solve them.

[0042] j is the number of each detection time point, , m is the number of detection time points.

[0043] It represents the signal strength of the i-th detection path of the transmission line to be detected at the j-th detection time point. The signal strength corresponding to each detection time point refers to an important parameter used to measure the strength of the signal. The signal strength directly affects the quality of transmission. The stronger the signal, the higher the reliability of transmission.

[0044] It is represented as a predefined signal definition strength, wherein the predefined signal definition strength refers to the minimum value of the signal strength.

[0045] It represents the signal transmission rate corresponding to the i-th detection path of the transmission line to be detected at the j-th detection time point. The signal transmission rate refers to the amount of data transmitted per unit time. It reflects the efficiency of the signal in the transmission process. By monitoring the changes in the signal transmission rate, potential performance problems can be analyzed in a timely manner, and corresponding measures can be taken to optimize it.

[0046] It is represented as a predefined signal-defined transmission rate, wherein the predefined signal-defined transmission rate refers to the minimum value of the signal transmission rate.

[0047] It represents the signal frequency corresponding to the jth detection time point of the i-th detection path of the transmission line to be detected. The signal frequency refers to the oscillation rate of the signal, that is, the number of periodic changes completed by the signal per unit time. If the signal frequency fluctuates abnormally or deviates, it may mean that there is a problem in the data collection of the cable in the transmission line to be detected, which requires further detection and repair.

[0048] It is represented as a predefined signal-defined frequency, wherein the predefined signal-defined frequency refers to the minimum value of the signal frequency.

[0049] Expressed as a correction factor corresponding to a predefined signal strength, Expressed as a correction factor corresponding to a predefined signal transmission rate, It is expressed as a correction factor corresponding to a predefined signal frequency, and e is a natural constant.

[0050] According to the meteorological interference association information of each detection path of the transmission line to be detected, the meteorological interference influence degree coefficient corresponding to each detection path of the transmission line to be detected is analyzed.

[0051] Furthermore, the meteorological interference influence index corresponding to each detection path of the transmission line to be detected, the specific data acquisition and analysis process is as follows: According to the meteorological interference related information of each detection path of the transmission line to be detected, wherein the meteorological interference related information includes the ambient temperature and the electromagnetic interference intensity value at each detection time point, the surface temperature of the cable of the transmission line to be detected at each detection time point is obtained, wherein the ambient temperature at each detection time point and the surface temperature of the cable are both obtained by a thermometer; the electromagnetic interference intensity is obtained by an electromagnetic interference detector to detect and record, which can be expressed by physical quantities such as voltage, current, field strength, and power, and the ambient temperature at each detection time point and the surface temperature of the cable are obtained for difference processing to obtain the required temperature deviation value.

[0052] The permissible temperature deviation value and the permissible electromagnetic interference intensity value are extracted from the cable information library.

[0053] Comprehensively analyze the meteorological interference influence coefficients corresponding to each detection path of the transmission line to be detected. The meteorological interference influence coefficients corresponding to each detection path of the transmission line to be detected can be obtained by a more accurate calculation method in addition to the model prediction. The specific calculation method is: , in It is represented as the meteorological interference influence coefficient corresponding to the i-th detection path of the line to be detected. In this example, the ambient temperature has an important influence on the working performance and stability of many electrical and electronic equipment. Therefore, it is very necessary to record the ambient temperature when collecting and detecting the cable data of the detection equipment in the detection path of the transmission line; the surface temperature of the cable is detected at a specific detection time point, reflecting the thermal state of the cable during operation. Under normal operation, the surface temperature of the cable should be kept within a certain range. The surface temperature of the cable beyond this range will have a negative impact on the meteorological interference, including reduced safety and service life of the cable; the electromagnetic interference intensity value reflects the severity or intensity of the electromagnetic interference at this time point, which will have a certain negative impact on the data collection of the detection cable in the detection path; in summary, when detecting the meteorological interference of each path, recording the ambient temperature, the surface temperature of the cable and the electromagnetic interference intensity can help us fully understand the operating environment and working status of the cable, so as to evaluate the impact of environmental factors on the operation of the cable.

[0054] i is the number of each detection path, , n is the number of detection paths, j is the number of each detection time point, , m is the number of detection time points.

[0055] It is represented by the ambient temperature of the i-th detection path of the transmission line to be detected at the j-th detection time point, where the ambient temperature refers to the actual temperature of the cable surrounding environment at a specific detection time point, which may be affected by many factors such as season, weather, sunshine, geographical location, and surrounding heat sources.

[0056] It is represented by the surface temperature of the cable of the transmission line to be tested at the jth detection time point, where the surface temperature refers to the actual temperature of the external surface, which is measured at a specific detection time point. The surface temperature of the cable may be affected by many factors, including the load condition of the cable, the ambient temperature, the insulation material and structure of the cable, the heat dissipation conditions, etc.

[0057] Expressed as the allowable temperature deviation value, where the allowable temperature deviation value refers to the maximum value of the temperature deviation value.

[0058] It is expressed as the electromagnetic interference intensity value of the i-th detection path of the transmission line to be detected at the j-th detection time point, where the electromagnetic interference intensity value refers to the quantitative index of the electromagnetic interference to the equipment used in the detection cable at a specific detection time point. The electromagnetic interference may come from various sources such as other electrical and electronic equipment, wireless communication signals, and lightning activities.

[0059] It is expressed as the permitted electromagnetic interference intensity value, where the permitted electromagnetic interference intensity value refers to the maximum value of the electromagnetic interference intensity.

[0060] Expressed as a correction factor corresponding to a predefined temperature deviation value, It is expressed as a correction factor corresponding to a predefined electromagnetic interference intensity value, and e is a natural constant.

[0061] Specifically, the executable index corresponding to each detection path of the transmission line to be detected, wherein the executable index of each detection path can be obtained by a more accurate calculation method in addition to being obtained by a machine learning method. The specific calculation method is: , in It is represented as the executable index corresponding to the i-th detection path of the line to be detected. In this embodiment, too small a number of execution detection points will lead to incomplete transmission lines and inaccurate detection; too large a curvature of the cable may cause the wire inside the cable to break, the insulation layer to be damaged, or the signal transmission quality to decline; too large a difference in effective detection length may also lead to inaccurate cable detection data; too small a signal strength, signal transmission rate, and signal frequency may directly affect the quality of communication. The lower the signal, the lower the reliability of communication and the worse the efficiency; too high or too low an ambient temperature and a cable surface temperature will affect the working performance and stability of the cable; an excessively large electromagnetic interference intensity value reflects that the electromagnetic interference is too serious at this point in time, which can directly affect the normal use of the cable and the detection of data; in summary, to obtain the executable index corresponding to each path, it is necessary to consider these influencing factors, analyze these parameters, and take corresponding measures to reduce the negative impact of the executable degree, improve the accuracy and efficiency of data detection, and improve the safety of the detection cable equipment.

[0062] i is the number of each detection path, , n is the number of detection paths.

[0063] It is expressed as the cable detection influence coefficient corresponding to the i-th detection path of the line to be detected, wherein the cable detection influence coefficient corresponding to each detection path represents the value of the cable detection influence degree corresponding to each detection path obtained by comprehensive evaluation of the number of detection points, the curvature of the cable and the effective detection length difference.

[0064] It is represented as the detection signal influence coefficient corresponding to the i-th detection path of the line to be detected, wherein the detection signal influence coefficient corresponding to each detection path represents the value of the detection signal influence degree corresponding to each detection path obtained by comprehensive evaluation of signal strength, signal transmission rate and signal frequency.

[0065] It is expressed as the meteorological interference influence degree coefficient corresponding to the i-th detection path of the line to be detected, wherein the meteorological interference influence degree coefficient corresponding to each detection path represents the value of the meteorological interference influence degree corresponding to each detection path obtained by comprehensive evaluation of the ambient temperature, the surface temperature of the cable and the electromagnetic interference degree.

[0066] It is expressed as the weight factor corresponding to the predefined cable detection influence coefficient, It is expressed as the weight factor corresponding to the predefined detection signal influence coefficient, It is expressed as a weight factor corresponding to the predefined meteorological interference impact coefficient.

[0067] Furthermore, the execution path of the transmission line to be detected is specifically analyzed as follows: The executable degree indexes corresponding to the detection paths of the transmission line to be detected are arranged in descending order, and the detection path corresponding to the executable degree index ranked first is extracted and recorded as the execution path, thereby screening the execution path of the transmission line to be detected.

[0068] It should be explained that the above-mentioned extraction of the first execution path as the optimal path for detection and analysis enables the transmission line to quickly and efficiently obtain the transmission detection data of the cable in the transmission line, reducing the time for transmitting data, while improving the accuracy and efficiency of the cable data in the detection line, and minimizing unnecessary execution paths.

[0069] The transmission line segmentation module is used to segment the transmission line to be detected according to equal cable lengths to obtain cables for each detection line.

[0070] The detection line cable anomaly assessment module is used to collect cable detection data belonging to the execution path of the transmission line to be detected, thereby screening and obtaining cable detection data of each detection line cable, and analyzing the anomaly assessment value of each detection line cable.

[0071] Specifically, the insulation evaluation coefficient of each detection line cable, the specific data acquisition and analysis process is: According to the cable detection data of each detection line cable, the cable detection data includes cable insulation detection data, cable corrosion detection data and cable mechanical force detection data.

[0072] According to the cable insulation test data of each test line cable, the average dielectric constant, the maximum dielectric strength and the average dielectric loss of each test line cable within the set cable test period are extracted, wherein the average dielectric constant can be obtained by theoretical calculation, molecular or atomic level calculation, using the theory of quantum mechanics and classical electromagnetism, starting from the properties of molecules or atoms in the medium, to calculate the average dielectric constant; the dielectric strength can be obtained through experimental measurement and data analysis, using a high-voltage electric field tester to perform a dielectric strength test, observing the reading of the resistance meter during the test, when the insulation resistance value reaches the preset value or decreases significantly, this voltage value may be closest to or represent the maximum value of the dielectric strength; the dielectric loss can be obtained by the microwave resonant cavity method, which is a classic dielectric loss measurement method, by placing the line cable sample to be tested inside the resonant cavity, and using the resonant frequency, resonant bandwidth and proton quality factor of the resonant cavity and other parameters to calculate the dielectric loss.

[0073] Extract dielectric reference constants and dielectric loss reference values ​​from the cable information library.

[0074] The insulation evaluation coefficient of each detection line cable is analyzed. The insulation evaluation coefficient of each detection line cable can be obtained not only through simulation analysis but also through a more accurate calculation method. The specific calculation method is: , in It is expressed as the insulation evaluation coefficient of the cable of the bth detection line. In this embodiment, the larger the average dielectric constant is, the more electrical energy the material stores in the electric field, which may affect the electrical characteristics and working performance of the cable. Regular detection and calculation of the average dielectric constant can understand the average performance of the cable insulation material over a period of time, so as to evaluate the overall condition and safety of the cable; if the maximum dielectric strength is lower than the expected or specified value, the cable may need to be replaced or repaired to ensure the safe and stable operation of the transmission line; if the average dielectric loss value exceeds the normal range, the insulation condition of the cable may need to be further tested to ensure its safe and reliable operation; in summary, the insulation degree of the cable needs to take these factors into consideration, and take corresponding implementation measures to reduce the negative impact of these parameters on the insulation degree of the cable, improve the maintenance efficiency of the cable, predict possible insulation failures of the cable, and improve the safety of the cable.

[0075] b is the number of each detection line cable, , f is the number of detection line cables, It is expressed as the average dielectric constant of the cable of the bth detection line within the set cable detection cycle.

[0076] It is expressed as a dielectric reference constant, where the average dielectric constant within the cable detection period refers to the average dielectric constant exhibited by the cable insulation material within the detection period. It is a physical quantity that describes the material's ability to store electrical energy in an electric field, and it reflects the material's response to the electric field. The dielectric reference constant changes dynamically under different influences, so it is also necessary to conduct a comprehensive analysis in combination with other electrical parameters and detection data to comprehensively evaluate the cable's working condition and safety.

[0077] It is expressed as the maximum dielectric strength of the cable of the bth test line within the set cable test cycle, where the maximum dielectric strength refers to the maximum electric field strength that the cable insulation material can withstand within the test cycle, that is, the maximum voltage gradient that it can withstand without being broken down, which reflects the tolerance of the insulation material under the action of the electric field; the maximum dielectric strength is a relative concept, which is affected by many factors, such as the manufacturing quality of the cable, the operating environment, the service life, etc. Therefore, other relevant factors need to be considered in practical applications to comprehensively evaluate the performance and safety of the cable.

[0078] It is expressed as the average dielectric loss value of the cable of the bth test line within the set cable test cycle, where the average dielectric loss value refers to the average loss value calculated after multiple measurements of the dielectric loss of the cable insulation material under the action of the electric field within the cable test cycle; the measurement and calculation of dielectric loss may be affected by many factors, such as measurement conditions, cable type, insulation material, etc. Therefore, when conducting dielectric loss detection, the relevant standards and specifications should be strictly followed to ensure the accuracy and reliability of the measurement results.

[0079] Expressed as dielectric loss reference value, where dielectric loss reference value refers to the numerical standard for analyzing dielectric loss.

[0080] is the correction factor corresponding to the predefined medium average constant, The insulation influence factor corresponding to the predefined maximum value of unit dielectric strength, Correction factor corresponding to the predefined average value of dielectric loss.

[0081] Furthermore, the corrosion degree assessment coefficient of each detection line cable, the specific data acquisition and analysis process is: According to the cable corrosion test data of each test line cable, the surface treatment degree value and the maximum redox potential of each test line cable within the set cable test cycle are extracted, wherein the surface treatment degree value can be obtained by using a surface roughness measuring instrument; the measurement of the maximum redox potential usually involves electrochemical testing techniques, such as potential scanning, polarization curve measurement, etc.

[0082] The corrosion degree assessment coefficient of each detection line cable is analyzed. The corrosion degree assessment coefficient of each detection line cable can be obtained not only through experimental measurement but also through a more accurate calculation method. The specific calculation method is: , in It represents the corrosion degree assessment coefficient of the cable of the bth detection line. In this embodiment, the surface treatment of the cable has an important influence on its electrical performance, mechanical performance and long-term service life. Too small a cable surface treatment degree means that its surface is seriously affected by factors such as pollution, scratches or corrosion. Therefore, regular detection of the surface treatment degree value of the cable can timely discover these problems and take corresponding cleaning, repair or replacement measures to ensure the normal operation and safety of the cable; when the cable is in a humid and highly corrosive environment, its material may undergo redox reaction, resulting in cable performance degradation or failure. By measuring the maximum redox potential, the corrosion resistance of the cable in a specific environment can be evaluated, and its potential service life can be predicted; in summary, the two indicators are of great significance in cable detection and maintenance. By regularly detecting and evaluating these indicators, potential problems of the cable can be discovered in time, and corresponding measures can be taken to repair or replace it to ensure the safe and stable operation of the transmission line.

[0083] b is the number of each detection line cable, , f is the number of detection line cables.

[0084] It indicates the surface treatment degree value of the cable of the bth test line within the set cable test cycle, where the surface treatment degree value refers to the cleanliness, smoothness of the cable surface after treatment, and the integrity of any coating or protective layer.

[0085] It indicates the maximum redox potential of the cable of the bth test line within the set cable test cycle, where the maximum redox potential refers to the maximum point value that the cable material can reach in the redox reaction within the cable test cycle. This indicator reflects the stability and corrosion resistance of the cable material in the electrochemical environment.

[0086] Indicates the corrosion influence factor corresponding to the predefined surface treatment degree unit value, It represents the corrosion influence factor corresponding to the predefined maximum redox potential unit value, and e is a natural constant.

[0087] Specifically, the mechanical stress evaluation coefficient of each detection line cable, the specific data acquisition and analysis process is: According to the cable mechanical force test data of each test line cable, the maximum extrusion pressure, maximum tensile force and maximum stress of each test line cable within the set cable test cycle are extracted. The maximum extrusion pressure and maximum tensile force can be obtained by performing extrusion tests and tensile tests on special extrusion testing machines and tensile testing machines, and the force value changes during the extrusion and stretching processes are recorded to find the corresponding maximum values. The maximum stress value can be obtained through stress testing equipment, such as strain gauges, stress gauges, etc., and stress testing is performed on the cable material, and the stress change process is recorded to find the maximum stress value.

[0088] The extrusion limit force, tensile force allowable value and stress reference value are extracted from the cable information library.

[0089] Analyze the mechanical stress evaluation coefficient of each detection line cable. The mechanical stress evaluation coefficient of each detection line cable can be obtained by historical data analysis and more accurate calculation method. The specific calculation method is as follows: , in It represents the mechanical stress assessment coefficient of the cable of the bth detection line. In this embodiment, the maximum extrusion pressure is crucial to evaluating the structural integrity and mechanical properties of the cable. Excessive extrusion pressure may cause damage to the internal structure of the cable, such as rupture of the insulation layer or deformation of the conductor, thereby affecting the electrical performance and service life of the cable; the maximum tensile force depends on factors such as the material, structure and manufacturing process of the cable. During the installation, maintenance or troubleshooting of the cable, understanding the maximum tensile force of the cable helps to avoid cable damage or performance degradation caused by excessive stretching; excessive stress may cause fatigue, breakage or degradation of the insulation performance of the cable material, thereby causing electrical failures or safety accidents; therefore, in the design and manufacturing process of the cable, it is necessary to fully consider the stress distribution and bearing capacity of the cable to ensure that it can withstand various stresses without damage during operation.

[0090] b is the number of each detection line cable, , f is the number of detection line cables.

[0091] It is expressed as the maximum extrusion pressure of the cable of the bth detection line within the set cable detection cycle, where the maximum extrusion pressure refers to the maximum extrusion pressure exerted on the cable during the cable detection process, and this extrusion pressure may come from the pressure applied to the cable in a specific detection link.

[0092] Expressed as extrusion limiting force, where the extrusion limiting force refers to the maximum value of the extrusion force.

[0093] It is expressed as the maximum tensile force of the cable of the bth test line within the set cable test cycle. The maximum tensile force refers to the maximum tensile force that the cable can withstand during the cable tensile test. This indicator reflects the tensile strength and toughness of the cable and is of great significance for evaluating the performance of the cable when subjected to external tensile force.

[0094] Expressed as the allowable tensile force value, where the allowable tensile force value refers to the maximum tensile force.

[0095] It is expressed as the maximum stress of the cable of the bth test line within the set cable test cycle. The maximum stress refers to the maximum stress on the cable material or structure during the operation of the cable. This stress may come from the cable's own weight, external environmental factors such as wind, temperature changes, or electrical loads.

[0096] Expressed as stress reference value, where stress reference value refers to the reference standard for analyzing stress.

[0097] Expressed as a correction factor corresponding to the predefined extrusion pressure, Expressed as a correction factor corresponding to a predefined tensile force, It is expressed as a correction factor corresponding to the predefined stress, and e is a natural constant.

[0098] Furthermore, the abnormal evaluation value of each detection line cable, wherein the abnormal evaluation value of each detection line cable can be obtained by a more accurate calculation method in addition to being obtained by the bridge method or the impulse higher than flashover method, and the specific calculation method is: , in Indicates the abnormal evaluation value of the cable of the bth detection line. In this example, by real-time monitoring and analysis of the abnormal evaluation values ​​of the cables of each detection line, abnormal conditions of the cable, such as insulation degradation and mechanical damage, can be discovered in time, which helps to warn and prevent failures before they occur, avoiding potential safety risks and production interruptions. An excessively large dielectric average constant affects the capacitance, electric field distribution and insulation performance of the cable, reducing the safety and stability of the cable. During the operation of the cable, due to the influence of various factors such as voltage, temperature, humidity, and mechanical stress, the insulation material may gradually age or be damaged, resulting in a decrease in dielectric strength. The mechanical dielectric strength of the cable should be tested regularly to ensure the normal operation of the cable. In the actual operation of the cable, the greater the dielectric loss, the more energy the cable loses in the process of transmitting electric energy, the lower the efficiency of the cable, and the insulation performance may also be reduced, or even cause a failure. In summary, when calculating the abnormal evaluation values ​​of the cables of each detection line, these factors need to be considered and estimated to reduce the negative impact of these parameters on the abnormal evaluation values ​​and ensure the accuracy and reliability of the abnormal evaluation values ​​of the cable.

[0099] b is the number of each detection line cable, , f is the number of detection line cables.

[0100] It is expressed as the insulation evaluation coefficient of the cable of the bth detection line, wherein the insulation evaluation coefficient of the cable is the value of the insulation degree of the cable obtained by comprehensive evaluation of the average dielectric constant, the maximum dielectric strength and the average dielectric loss.

[0101] It represents the corrosion degree assessment coefficient of the cable of the bth detection line, wherein the cable corrosion degree assessment coefficient is the value of the cable corrosion degree obtained by comprehensive analysis of the surface treatment degree value and the maximum redox potential.

[0102] It represents the mechanical stress assessment coefficient of the cable of the bth test line, wherein the mechanical stress assessment coefficient of the cable is the value of the mechanical stress of the cable obtained by comprehensive analysis of the maximum extrusion pressure, the maximum tensile force and the maximum stress.

[0103] Expressed as a weight factor corresponding to the predefined insulation rating coefficient, Expressed as a weight factor corresponding to the predefined corrosion severity assessment coefficient, It is expressed as the weight factor corresponding to the predefined mechanical stress degree assessment coefficient, and e is a natural constant.

[0104] Specifically, the cable abnormality positioning prompt is performed on each detection line cable, and the specific analysis process is as follows: The abnormal assessment value of each detection line cable is compared with the preset abnormal assessment threshold. If the abnormal assessment value of a detection line cable is higher than the preset assessment threshold, it may mean that the cable is overheated, the insulation is aged, or it is short-circuited. It may also lead to negative effects such as unstable or interrupted power supply. Therefore, potential faults of the cable should be discovered and handled in time to ensure the safe and stable operation of the cable.

[0105] The cable abnormality is located for the detection line cable, and the number of detection line cables that are higher than the preset abnormality assessment threshold is counted and recorded as the line cables to be located, thereby providing a cable abnormality location prompt for each line cable to be located.

[0106] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A cable detection and positioning system for a transmission line, characterized in that: include: An execution path analysis and screening module is used to obtain the associated information of each detection path of the transmission line to be detected, analyze the executable degree index corresponding to each detection path of the transmission line to be detected, and screen the execution path of the transmission line to be detected; The transmission line segmentation module is used to segment the transmission line to be detected according to equal cable lengths to obtain cables for each detection line; The detection line cable anomaly assessment module is used to collect the cable detection data belonging to the execution path of the transmission line to be detected, thereby screening and obtaining the cable detection data of each detection line cable, and analyzing the anomaly assessment value of each detection line cable; The cable abnormality positioning prompt module is used to provide cable abnormality positioning prompts for the cables of each detection line.

2. A cable detection and positioning system for a transmission line according to claim 1, characterized in that: The specific analysis process of providing abnormal cable location prompts for each detection line cable is as follows: The abnormality assessment value of each detection line cable is compared with the preset abnormality assessment threshold. If the abnormality assessment value of a detection line cable is higher than the preset assessment threshold, the cable abnormality is located for the detection line cable. The number of detection line cables that are higher than the preset abnormality assessment threshold is counted and recorded as the line cables that need to be located. Thus, a cable abnormality location prompt is given to each line cable that needs to be located.

3. A cable detection and positioning system for transmission lines according to claim 2, characterized in that: The abnormality assessment value of each detection line cable is obtained by comprehensively analyzing the insulation degree assessment coefficient of each detection line cable, the corrosion degree assessment coefficient of each detection line cable and the mechanical stress degree assessment coefficient of each detection line cable.

4. A cable detection and positioning system for transmission lines according to claim 3, characterized in that: The insulation evaluation coefficient of each detection line cable, the specific data acquisition and analysis process is as follows: According to the cable detection data of each detection line cable, wherein the cable detection data includes cable insulation detection data, cable corrosion detection data and cable mechanical stress detection data; According to the cable insulation test data of each test line cable, the average dielectric constant, the maximum dielectric strength and the average dielectric loss of each test line cable within the set cable test cycle are extracted; The dielectric reference constant and dielectric loss reference value are extracted from the cable information library, and the insulation evaluation coefficient of each test line cable is analyzed.

5. A cable detection and positioning system for transmission lines according to claim 3, characterized in that: The corrosion degree assessment coefficient of each detection line cable, the specific data acquisition and analysis process is as follows: According to the cable corrosion test data of each test line cable, the surface treatment degree value and the maximum redox potential of each test line cable within the set cable test cycle are extracted, and the corrosion degree assessment coefficient of each test line cable is analyzed.

6. A cable detection and positioning system for transmission lines according to claim 3, characterized in that: The mechanical stress evaluation coefficient of each detection line cable, the specific data acquisition and analysis process is: According to the cable mechanical stress test data of each test line cable, the maximum extrusion pressure, maximum tensile force and maximum stress of each test line cable within the set cable test cycle are extracted, and the extrusion limit force, tensile force allowable value and stress reference value are extracted from the cable information database to analyze the mechanical stress degree assessment coefficient of each test line cable.

7. A cable detection and positioning system for transmission lines according to claim 1, characterized in that: The execution path of the transmission line to be detected, the specific analysis process is: The executable degree indexes corresponding to the detection paths of the transmission line to be detected are arranged in descending order, and the detection path corresponding to the executable degree index ranked first is extracted and recorded as the execution path, thereby screening the execution path of the transmission line to be detected.

8. A cable detection and positioning system for transmission lines according to claim 7, characterized in that: The executable degree index corresponding to each detection path of the transmission line to be detected is obtained by comprehensively evaluating the cable detection influence degree coefficient corresponding to each detection path of the transmission line to be detected, the detection signal influence degree coefficient corresponding to each detection path of the line to be detected, and the meteorological interference influence degree coefficient corresponding to each detection path of the transmission line to be detected, thereby obtaining the executable degree data corresponding to each detection path of the transmission line to be detected.

9. A cable detection and positioning system for transmission lines according to claim 8, characterized in that: The executable degree index corresponding to each detection path of the transmission line to be detected is specifically analyzed as follows: According to the associated information of each detection path of the transmission line to be detected, wherein the associated information includes cable detection associated information, detection signal associated information and meteorological interference associated information; According to the cable detection association information of each detection path of the transmission line to be detected, the number of execution detection points corresponding to each detection path of the transmission line to be detected is extracted; The number of straight cable segments and the number of curved cable segments in the transmission line to be detected are obtained, and the curvature of the cable of the transmission line to be detected is obtained by ratio processing, thereby screening and obtaining the curvature of the cable corresponding to each detection path of the transmission line to be detected; Obtain the detection distance corresponding to each detection path of the transmission line to be detected, and extract the effective length of the cable of the transmission line to be detected from the cable information library, and obtain the effective detection length difference corresponding to each detection path of the transmission line to be detected by difference comparison processing; Extract the number of defined inspection points, the corresponding defined bending rate of the cable, and the effective detection defined length difference from the cable information database, and comprehensively analyze the cable detection influence coefficient corresponding to each detection path of the transmission line to be detected; According to the detection signal association information of each detection path of the transmission line to be detected, the set path detection period is divided into detection time points, thereby extracting the signal strength, signal transmission rate and signal frequency corresponding to each detection path of the transmission line to be detected at each detection time point, and comprehensively evaluating the detection signal influence coefficient corresponding to each detection path of the transmission line to be detected; According to the meteorological interference association information of each detection path of the transmission line to be detected, the meteorological interference influence degree coefficient corresponding to each detection path of the transmission line to be detected is analyzed.

10. A cable detection and positioning system for transmission lines according to claim 9, characterized in that: The meteorological interference influence index corresponding to each detection path of the transmission line to be detected, the specific data acquisition and analysis process is as follows: According to the meteorological interference association information of each detection path of the transmission line to be detected, wherein the meteorological interference association information includes the ambient temperature and the electromagnetic interference intensity value at each detection time point, the surface temperature of the cable of the transmission line to be detected at each detection time point is obtained; The permissible temperature deviation value and the permissible electromagnetic interference intensity value are extracted from the cable information library, and the meteorological interference influence degree coefficient corresponding to each detection path of the transmission line to be detected is comprehensively analyzed.

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