Algorithm and system for replacing carrier cable of elastic chain-shaped suspension of high-speed railway overhead line system

Abstract

The invention belongs to the technical field of high-speed railway contact network maintenance, and particularly relates to a carrier cable replacement algorithm and system for elastic chain-shaped suspension of a high-speed railway contact network. The algorithm comprises the steps that the axial length and the radial size of the carrier cable are obtained, and the initial radial size and the initial distance between the first mark point and the second mark point are obtained; obtaining the distance between the first mark point and the second mark point of the current carrier cable, an external dynamic interference factor and a radial size, and outputting the external dynamic interference factor into the target dynamic interference compensation model to obtain the current mark point distance, dynamic interference compensation data and the radial size; generating a final distance according to the current mark point distance and the current dynamic interference compensation data, comparing the final distance with the initial distance, and determining a mark point distance difference value; and calculating a difference value with the current radial size to obtain a reference factor for replacing the carrier cable. And a dynamic mark point spacing monitoring and multi-factor interference compensation model is constructed, and quantification of axial ductile deformation is realized.

Description

Technical Field

[0001] The present application belongs to the technical field of high-speed railway contact network maintenance, and in particular relates to an algorithm and system for replacing the catenary cables of the elastic chain suspension of the high-speed railway contact network. Background Art

[0002] In high-speed railway catenary systems, the catenary cables within the elastic chain-like suspension structure are subjected to long-term dynamic mechanical loads and environmental influences. Existing technologies for monitoring the condition of these cables rely primarily on periodic manual inspections or single-dimensional measurements using onboard testing equipment.

[0003] Traditional testing methods generally focus on the evaluation of radial dimensional changes, but fail to effectively quantify axial ductile deformation.

[0004] In view of this, there is an urgent need for an algorithm and system for replacing the catenary cables of the elastic chain suspension of the high-speed railway contact network. Summary of the Invention

[0005] Based on this, it is necessary to provide a load-bearing cable replacement algorithm and system for the elastic chain suspension of the high-speed railway contact network to address the above technical problems.

[0006] In a first aspect, the present application provides an algorithm for replacing catenary cables of an elastic chain suspension of a high-speed railway contact network, the method comprising: Obtaining the axial length and radial dimension of the catenary cable, arranging marking points at preset intervals based on the axial length, and correspondingly obtaining an initial radial dimension and an initial distance between a first marking point and a second marking point; Using historical external dynamic interference factors, the initial dynamic interference compensation model is trained to obtain a target dynamic interference compensation model, wherein the historical external dynamic interference factors include vibration interference, temperature interference, and wind disturbance swing data; Obtaining the distance between the first marking point and the second marking point of the current catenary, the external dynamic interference factor, and the radial dimension, and inputting the external dynamic interference factor into the target dynamic interference compensation model to correspondingly obtain the current marking point distance, current dynamic interference compensation data, and current radial dimension; Generating a final distance according to the current marking point distance and the current dynamic interference compensation data, and comparing the final distance with the initial distance to determine a marking point distance difference; According to the distance difference between the marking points and the current radial size, the difference is calculated to obtain a reference factor for replacing the load-bearing cable.

[0007] In some practicable embodiments, the step of obtaining the axial length and radial dimension of the catenary cable, arranging marking points at preset intervals based on the axial length, and correspondingly obtaining the initial radial dimension and the initial distance between the first marking point and the second marking point includes: Obtain the axial length and radial dimension of the load-bearing cable between the two columns to obtain the initial axial length and initial radial dimension; Arranging marking points at predetermined intervals according to the initial axial length to obtain at least a first marking point and a second marking point; An initial distance is obtained according to the first marking point and the second marking point.

[0008] In some practicable manners, the step of using historical external dynamic interference factors to train the initial dynamic interference compensation model to obtain the target dynamic interference compensation model includes: In the test field, the vehicle speed and vibration are simulated to obtain the shape changes of the catenary under different speeds and vibrations, and obtain vibration interference data; In the test field, temperature changes are simulated to obtain the shape changes of the catenary at different temperatures and obtain temperature interference data; In the test field, wind speed and direction are simulated to obtain the shape changes of the catenary under different wind speeds and directions, and obtain wind disturbance swing data; The historical external dynamic interference factors are obtained by combining the data of vibration interference, temperature interference and wind disturbance swing, and the corresponding morphological changes of the catenary cables; An initial dynamic interference compensation model is constructed, and the historical external dynamic interference factors are used as training data for training to obtain a target dynamic interference compensation model.

[0009] In some practicable embodiments, the step of obtaining the distance between the first marking point and the second marking point of the current catenary cable, the external dynamic interference factor, and the radial dimension, and inputting the external dynamic interference factor into the target dynamic interference compensation model to correspondingly obtain the current marking point distance, current dynamic interference compensation data, and current radial dimension includes: Using a laser scanner to obtain the distance between the first marking point and the second marking point of the current catenary cable, as well as the radial dimension, to obtain the current marking point distance and the current radial dimension; The data of vibration interference, temperature interference and wind disturbance swing at the current location of the catenary are obtained, and the external dynamic interference factors formed are obtained to obtain the current dynamic interference compensation data.

[0010] In some practicable embodiments, the step of generating a final distance based on the current marker point distance and the current dynamic interference compensation data, and comparing the final distance with the initial distance to determine the marker point distance difference includes: Utilizing the current marking point distance and the current dynamic interference compensation data, performing difference calculation to generate a final distance; The final distance is compared with the initial distance, and a difference is calculated to determine the distance difference of the marking point.

[0011] In some practicable embodiments, the step of calculating the difference based on the distance difference between the marking points and the current radial dimension to obtain a reference factor for replacing the catenary cable includes: Comparing the distance difference between the marked points and the current radial size with the standard information for Messenger cable replacement, calculating the difference, and obtaining a Messenger cable replacement time interval; The time interval for replacing the catenary cables is used as a reference factor for replacing the catenary cables.

[0012] In some practicable embodiments, the step of comparing the distance difference between the marking points and the current radial dimension with the standard information for replacing the catenary cable, calculating the replacement time, and obtaining the catenary cable replacement time interval includes: Obtaining a variation function based on the initial state of the catenary cable, the distance difference to the current marking point, and the time required for the current radial dimension; The time interval for replacing the catenary cables is predicted based on the variation function and the difference information.

[0013] In a second aspect, the present application provides a system for replacing catenary cables of an elastic chain suspension of a high-speed railway contact network, which is applied to the aforementioned method. The system comprises: a first acquiring unit, configured to acquire an axial length and a radial dimension of the catenary cable, and arrange marker points at preset intervals based on the axial length to obtain an initial radial dimension and an initial distance between the first marker point and the second marker point; a model unit, configured to train an initial dynamic interference compensation model using historical external dynamic interference factors to obtain a target dynamic interference compensation model, wherein the historical external dynamic interference factors include data on vibration interference, temperature interference, and wind disturbance swing; a second acquisition unit, configured to acquire the distance between the first marking point and the second marking point of the current catenary cable, an external dynamic interference factor, and a radial dimension, and input the external dynamic interference factor into the target dynamic interference compensation model to correspondingly obtain the current marking point distance, current dynamic interference compensation data, and current radial dimension; a comparing unit, configured to generate a final distance based on the current marking point distance and the current dynamic interference compensation data, and compare the final distance with the initial distance to determine a marking point distance difference; The result unit is used to calculate the difference according to the distance difference between the marking points and the current radial size to obtain a reference factor for replacing the load-bearing cable.

[0014] In a third aspect, the present application provides a computer storage medium having a computer program stored thereon, characterized in that the computer program implements the steps of the aforementioned method when executed by a processor.

[0015] In a fourth aspect, the present application provides a computer program, characterized in that when the computer program is executed by a processor, the steps of the aforementioned method are implemented.

[0016] Beneficial effect: The present application provides an algorithm for replacing the catenary of an elastic chain suspension of a high-speed railway contact network, comprising obtaining the axial length and radial dimension of the catenary, arranging marking points at preset intervals based on the axial length, and obtaining the initial radial dimension and the initial distance between the first marking point and the second marking point; using historical external dynamic interference factors to train the initial dynamic interference compensation model to obtain a target dynamic interference compensation model, wherein the historical external dynamic interference factors include data on vibration interference, temperature interference and wind disturbance swing; obtaining the distance between the first marking point and the second marking point of the current catenary, the external dynamic interference factors and the radial dimension, and inputting the external dynamic interference factors into the target dynamic interference compensation model, and obtaining the current marking point distance, current dynamic interference compensation data, and current radial dimension; generating a final distance based on the current marking point distance and the current dynamic interference compensation data, and comparing it with the initial distance to determine the marking point distance difference; calculating the difference based on the marking point distance difference and the current radial dimension to obtain a reference factor for replacing the catenary. Through the above method, a dynamic marker point spacing monitoring and multi-factor interference compensation model is constructed to achieve the quantification of axial ductile deformation; combined with laser scanning to calibrate radial dimensional changes in real time, the axial / radial degradation coupling characteristic values ​​are output synchronously under continuous operation conditions, and the quantitative basis of service life is directly generated. The passive manual sampling inspection is upgraded to a full-life dynamic early warning system, eliminating the risk of contact network paralysis caused by sudden axial fractures. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the conventional technology, the following briefly introduces the drawings required for use in the embodiments or the conventional technology descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 The present invention is a flowchart of an algorithm for replacing catenary cables of an elastic chain suspension of a high-speed railway contact network in one embodiment.

[0019] Figure 2A flowchart of a high-speed railway contact network chain-shaped suspension catenary cable replacement algorithm for a high-speed railway contact network elastic chain-shaped suspension in one embodiment. DETAILED DESCRIPTION

[0020] To facilitate understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The accompanying drawings provide embodiments of the present application. However, the present application may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of the present application more thorough and comprehensive.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The term "and / or" as used herein includes any and all couplings of one or more of the associated listed items.

[0022] It will be understood that the terms "first," "second," etc. used herein may be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish a first element from another element.

[0023] In high-speed railway catenary systems, the catenary cables within the elastic chain-shaped suspension structure are subjected to long-term dynamic mechanical loads and environmental influences. Laser equipment can be used to perform radial scanning, assessing the condition of the cables based on radial changes. However, this single-dimensional detection approach makes it difficult to fully capture the full lifecycle state of material fatigue, particularly the cumulative effects of axial plasticity under alternating stresses, which are often overlooked. However, engineering practice has shown that axial deformation is as significant as radial wear in influencing the failure mode of catenary cables. The one-sided nature of the current technical framework can lead to misjudgments of safety hazards.

[0024] Dynamic measurement environments further exacerbate technical limitations. Mechanical vibrations from train operation, lateral wind load-induced cable sway, and thermal expansion effects from ambient temperature fluctuations create multi-physics coupling interference. The current lack of adaptive compensation mechanisms for these complex operating conditions leads to systematic offsets in measurement data. Especially in high-speed mobile inspection scenarios, the combined effects of multiple interference sources significantly reduce axial positioning accuracy and radial dimension measurement reliability.

[0025] In view of this, there is an urgent need for a catenary cable replacement algorithm and system for elastic chain suspension of high-speed railway contact network to solve the above technical problems.

[0026] like Figure 1 As shown, in a first aspect, the present application provides an algorithm for replacing catenary cables of an elastic chain suspension of a high-speed railway contact network, comprising: S100, obtaining the axial length and radial dimension of the load-bearing cable, arranging marking points at preset intervals based on the axial length, and obtaining the initial radial dimension and the initial distance between the first marking point and the second marking point.

[0027] Specifically, obtaining the initial radial size and the initial distance between the first marking point and the second marking point may include the following steps: S101, obtaining the axial length and radial dimension of the load-bearing cable between the two columns to obtain the initial axial length and initial radial dimension.

[0028] Specifically, in the initial state of the catenary cable, a laser device can be used to measure the catenary cable in sections along its axial direction, and the flattened length of the catenary cable between the two anchor columns can be obtained by accumulation.

[0029] The radial dimensions of the catenary cables can be obtained based on the factory markings of the catenary cables, or they can be measured at the construction site.

[0030] S102 , arranging marking points at preset intervals according to the initial axial length to obtain at least a first marking point and a second marking point.

[0031] Specifically, the density of reference points is calculated based on the initial axial length. The density can be rounded to an integer based on the length of the catenary. For example, the distance between two anchor columns 50 meters apart can be divided into five equal parts. Thus, using each anchor column as a marking point and placing four marking points between them, the initial axial length can be divided equally into five 10-meter marking points.

[0032] It should be noted that the marking points can be ceramic marking points, RFID marking points, etc., so as to avoid the influence of the external environment on the marking points over a long period of time. For example, sprayed marking points are easily corroded and damaged.

[0033] S103: Obtain an initial distance according to the first marking point and the second marking point.

[0034] Under constant temperature and no wind conditions, the coordinate points, the first marking point and the second marking point are recorded one by one. This is only for illustrative purposes. The number of marking points depends on the axial length, and this application does not limit the number of marking points.

[0035] S200 , using historical external dynamic interference factors, the initial dynamic interference compensation model is trained to obtain a target dynamic interference compensation model.

[0036] The historical external dynamic interference factors include vibration interference, temperature interference and wind disturbance data.

[0037] Specifically, obtaining the target dynamic interference compensation model may include the following steps: S201 , simulating vehicle speed and vibration in a test field, obtaining changes in the shape of the catenary cables under different speeds and vibrations, and obtaining vibration interference data.

[0038] Specifically, in a laboratory environment, a database of relationships between different speeds, vibrations, and the vibration responses of the catenary cables is obtained.

[0039] Here, speed refers to the simulated vehicle's speed; vibration refers to the simulated vehicle's vibration. A linear relationship is established between speed, vibration, and the vibration of the catenary cables, forming a database of response relationships with the vibration of the catenary cables. This data also forms vibration disturbance data, which serves as training data for the target dynamic disturbance compensation model. This linear relationship refers to the mapping of input to output using a first-order polynomial, encompassing both global linearization and piecewise linear approximation schemes.

[0040] S202, simulating temperature changes in a test field, obtaining morphological changes of the catenary cables at different temperatures, and obtaining temperature interference data.

[0041] Specifically, in a laboratory environment, a segmented temperature-controlled wind tunnel is used to uniformly heat or cool the catenary cables, thereby obtaining the morphological changes of the catenary cables at different temperatures, and forming a database of the response relationship between temperature and deformation, thereby obtaining temperature interference data.

[0042] S203, simulating wind speed and direction in a test field, obtaining changes in the shape of the catenary cables under different wind speeds and directions, and obtaining data on wind-induced swing.

[0043] Specifically, in a laboratory environment, multi-directional adjustable wind speeds are deployed to act on the catenary cables to determine the morphological changes of the catenary cables, and a database of the response relationship between wind speed and morphological changes of the catenary cables is formed, thereby obtaining wind disturbance swing data.

[0044] S204: Utilize the data of vibration interference, temperature interference and wind disturbance swing, and the corresponding shape changes of the catenary cables, and combine them to obtain the historical external dynamic interference factors.

[0045] In the above steps, after obtaining the data of vibration interference, temperature interference and wind disturbance swing respectively, these data are traversed and combined, that is, each set of data includes the data of vibration interference, temperature interference and wind disturbance swing, thereby obtaining the historical external dynamic interference factors.

[0046] S205 , constructing an initial dynamic interference compensation model, and using the historical external dynamic interference factors as training data to perform training to obtain a target dynamic interference compensation model.

[0047] Specifically, a nonlinear mapping from input (interference parameter) to output (deformation deviation) is established. For example, the training mechanism is: Input layer: three-dimensional disturbance vector [vibration, temperature, wind]; perform general necessary physical constraints.

[0048] Output layer: axial coordinate compensation ΔL, where the axial coordinate compensation ΔL refers to the axial deformation offset component of the load-bearing cable.

[0049] The physical mechanism of the axial coordinate compensation ΔL is essentially the thermal expansion characteristics of the material, the direction of the aerodynamic force, and the gravity field. These factors will affect ΔL, resulting in inaccurate final measurements.

[0050] ΔL = vibration interference + temperature interference + wind disturbance. ΔL is used as the adjustment for the actual spacing.

[0051] First, a virtual physical courtroom was constructed, using laboratory simulations of temperature, wind, and vibration as evidence and the axial deviation of the load-bearing cables captured by laser scanners as objective truth. The training process adhered to the dual constraints of physical laws and data evidence, combined with multiple cross-validations, to determine the proportion of each interfering factor responsible for the axial deviation.

[0052] These data are applied to the initial dynamic interference compensation model for training, and finally the target dynamic interference compensation model is obtained.

[0053] S300, obtain the distance between the first marking point and the second marking point of the current bearing cable, the external dynamic interference factor and the radial dimension, and input the external dynamic interference factor into the target dynamic interference compensation model, and obtain the current marking point distance, current dynamic interference compensation data, and current radial dimension accordingly.

[0054] Specifically, obtaining the current marking point distance, the current dynamic interference compensation data, and the current radial size may include the following steps: S301: Use a laser scanner to obtain the distance between the first marking point and the second marking point of the current catenary cable, as well as the radial dimension, to obtain the current marking point distance and the current radial dimension.

[0055] Specifically, a laser scanner is used to emit a fan-shaped laser beam covering the cross section of the catenary, which can be captured in real time using the principle of triangulation: Marker point spacing: Identify the reflective centers of the marker points embedded in the catenary and calculate the Euclidean distance in three-dimensional space; Radial dimension: Take points every 0.5° along the circumference and fit the minimum circumscribed circle diameter.

[0056] It should be noted that a laser scanner can be used to determine the position and radial size of the marking point, saving equipment costs. The laser scanner can be placed on the train, such as on the roof, so that data can be collected while the train is moving.

[0057] S302, obtaining data on vibration interference, temperature interference and wind disturbance swing at the current location of the catenary, and obtaining current dynamic interference compensation data by forming external dynamic interference factors.

[0058] For example, for data collection with temperature interference, a gyro-stabilized infrared thermal imager (FLIRx8580sc) can be used to measure the surface temperature field of the catenary cable in a non-contact manner, and the gimbal can reversely compensate the pointing angle in real time according to the shaking of the vehicle body.

[0059] For data collection of vibration interference, a vibration sensor can be installed on the vehicle to collect the vibration of the vehicle, and based on the linear relationship with the vibration of the supporting cable, the deviation of the vibration of the supporting cable from the true value, that is, the interference, can be determined.

[0060] For data collection on wind disturbance and sway, a cannon-type ultrasonic anemometer (Vaisala WXT536) can be extended to a preset distance from the roof to avoid or reduce the impact of flow around the vehicle body.

[0061] It should be noted that by collecting data on vibration interference, temperature interference and wind disturbance swing at the current location of the catenary, as external dynamic interference factors for measuring adjacent marking points, the current dynamic interference compensation data is finally formed.

[0062] S400 , generating a final distance according to the current marking point distance and the current dynamic interference compensation data, and comparing the final distance with the initial distance to determine a marking point distance difference.

[0063] Specifically, determining the distance difference between the marker points may include the following steps: S401 , performing difference calculation using the current marking point distance and the current dynamic interference compensation data to generate a final distance.

[0064] S402: Compare the final distance with the initial distance, perform difference calculation, and determine the distance difference of the marking point.

[0065] Specifically, in the aforementioned steps, a laser scanner measures the distance between the first and second markers to determine the current marker distance. However, this distance is affected by the deformation or movement of the catenary cable. Specifically, after the laser scanner scans the first marker and determines its location, it then scans the second marker after a period of time (the time the vehicle travels) to determine its location. This indicates that there is a time difference between the formation of the first and second markers, and this time difference can affect the determination of the catenary cable dimensions. This is why the current dynamic interference compensation data is calculated in the aforementioned steps.

[0066] After obtaining the current dynamic interference compensation data and the current marking point distance between the two marking points in the above steps, difference calculation needs to be performed, specifically whether it is addition or addition, which is determined according to the specific value of the current dynamic interference compensation data.

[0067] The current dynamic interference compensation data is calculated by the target dynamic interference compensation model.

[0068] It should be noted that the data for vibration interference, temperature interference, and wind disturbance sway are linearly correlated with the data measured by the laser scanner. Therefore, in the aforementioned steps, the correlation relationship is calculated through a large amount of historical data such as experiments to obtain the target dynamic interference compensation model. Here, the difference between the current marker point distance and the current dynamic interference compensation data is calculated, which is equivalent to adjusting the length of the current marker point distance (i.e., the measured axial distance of the catenary) to make the measured length closer to the true value.

[0069] Next, the difference between the final distance and the initial distance is calculated to determine whether the distance difference between adjacent markers is within the compliance range.

[0070] It should be noted that the distance to the current marker point is calculated based on two marker points. Specifically, the sum of two distances can be calculated based on three marker points and compared with the ideal or initial distance. It is understood that this initial distance also refers to two distances, that is, the length corresponding to the distance to the current marker point, and should not be understood as the distance between the two anchor posts.

[0071] It should also be noted that since the vehicle is moving at a high speed during the process, the collected data can be stored and timestamped so that the current marker distance and dynamic interference compensation data can be calculated based on the timestamp. This can reduce the pressure on the computing server.

[0072] S500: Calculate the replacement time based on the distance difference between the marking points and the current radial size to obtain reference factors for replacing the catenary cables.

[0073] Specifically, obtaining reference factors for replacing the catenary cables may include the following steps: S501 , comparing the distance difference between the marking points and the current radial dimension with standard information on the replacement of the Messenger cable, calculating the difference, and obtaining a time interval for the replacement of the Messenger cable.

[0074] Specifically, standard values ​​are associated with catenary cable replacement. This means comparing the distance difference between the current catenary cable's marking points and its current radial dimensions with the standard cable replacement information. The difference is calculated to determine the axial and radial distance differences for the replacement catenary cable. This axial and radial differences are then used to determine the catenary cable replacement timeframe. Furthermore, the catenary cable replacement timeframe can be inferred from the axial and radial differences compared to the standard values.

[0075] It should be noted that obtaining the time interval for replacing the catenary cables may include the following steps: S5011, obtaining a variation function according to the initial state of the catenary cable, the distance difference to the current marking point, and the time required for the current radial dimension.

[0076] S5012: Predicting a time interval for replacing the catenary cables based on the variation function and the difference information.

[0077] Specifically, the initial state of the catenary cable is first determined. Next, the distance difference between the current marking points and the current radial dimensions of the catenary cable, obtained in the previous step, i.e., the current axial and radial values, are compared with the values ​​corresponding to the initial state of the catenary cable to obtain the axial and radial differences. Next, the time difference is determined by comparing the timestamp of the information collected in the previous step with the time of the initial assembly of the catenary cable.

[0078] A variation function is constructed based on the axial and radial differences, as well as the time difference.

[0079] According to this variation function, the current axial and radial dimensions are taken as initial states, and standard values ​​for replacing the catenary cables are substituted into the variation function, thereby predicting the time interval for replacing the catenary cables.

[0080] S502: Using the time interval for replacing the catenary cables as a reference factor for replacing the catenary cables.

[0081] Specifically, after obtaining the time interval for replacing the catenary cables in the aforementioned steps, this time interval can be used as one of the multiple reference factors for replacing the catenary cables.

[0082] In one embodiment, the step of constructing the variation function according to the axial and radial differences and the time difference further includes: Obtain the service life of the Messenger cables and the average daily frequency of trains passing through the target section where the Messenger cables are located; Assigning weights to the axial direction and radial direction respectively to obtain an axial weight and a radial weight, wherein the axial weight is negatively correlated with the service life, and the radial weight is positively correlated with the average daily frequency of trains passing through the target section; An adjustment coefficient is established according to the axial weight and the radial weight, and is added to the change function to obtain a target change function.

[0083] In the above steps, the coefficient of the variation function is adjusted so that the predicted time interval for the replacement of the load-bearing cables using the variation function is more accurate.

[0084] It should be noted that a weight distribution table may be pre-constructed for the service years and the average daily frequency of trains passing through the target section, and weights may be allocated to the axial and radial directions respectively according to the weight distribution table.

[0085] In a method for replacing a catenary cable of an elastic chain suspension of a high-speed railway contact network, if it is determined that replacement is necessary, the catenary cable of the elastic chain suspension of the high-speed railway contact network can be replaced, such as Figure 2 As shown, the process includes the following: Construction process steps 1. Construction preparation: preliminary work arrangements and material preparation.

[0086] 2. Waiting for orders, electrical testing and grounding: Receive construction instructions and complete electrical testing and grounding operations.

[0087] 3. Release tension, remove load-bearing cables, dismantle electrical connections, etc.: Release tension, remove old load-bearing cables and electrical connection components.

[0088] 4. Anchoring of the new catenary cable: The starting end of the new catenary cable is fixed.

[0089] 5. Load-bearing cables installation: Lay new load-bearing cables along the line.

[0090] 6. Anchoring of the new load-bearing cable: The terminal end of the new load-bearing cable is fixed.

[0091] 7. Put the middle anchor and new load-bearing cable back into position: install the middle anchor fixture and adjust the position of the load-bearing cable.

[0092] 8. Installation of elastic slings, crimping of electrical connections, inversion of sling strings, and recycling of old wires: installation of elastic slings, crimping of electrical connections, adjustment of sling strings, and recycling of old materials.

[0093] 9. Initial adjustment, inspection and acceptance of mainline suspension; adjustment, fine-tuning, testing, inspection and acceptance of sideline suspension: complete the fine-tuning and acceptance of mainline / sideline suspension in steps.

[0094] 10. Power supply: The system is powered on and put into operation.

[0095] 11. Observe the passing of trains after opening: monitor the status of the first train passing through.

[0096] 12. End and return: Finish the work and evacuate personnel and equipment.

[0097] It should be noted that the elastic sling tensioning, the normal elastic sling tensioning process is to tension from the center anchor knot to the anchor points on both sides, so as to ensure the uniformity of the elastic coefficient of the contact network tensioned by the elastic sling. Since the replacement of the load-bearing cable takes into account the operation of the rail car and the line-laying time, it is difficult to complete it within a construction skylight point. Therefore, in order to quickly complete the recovery of the contact network, an electric elastic sling tensioning equipment is used to accelerate the tensioning efficiency of the elastic sling, and synchronized tensioning is performed on each positioning point to first ensure that the contact network can be quickly restored. Secondly, after the replaced load-bearing cable section is opened, speed limit measures are taken. The speed limit after opening is 160km / h. The second skylight point is used to tension the elastic sling from the center anchor knot to both sides, and then the suspension is adjusted to restore the elasticity of the contact network. The speed limit after opening is 200km / h. The third skylight point is used to fine-tune the contact network parameters. After opening, the speed limit of the first train is 160km / h, and the normal speed is restored subsequently.

[0098] In a second aspect, the present application provides a system for replacing catenary cables of an elastic chain suspension of a high-speed railway contact network, which is applied to the aforementioned method. The system comprises: a first acquiring unit, configured to acquire an axial length and a radial dimension of the catenary cable, and arrange marker points at preset intervals based on the axial length to obtain an initial radial dimension and an initial distance between the first marker point and the second marker point; a model unit, configured to train an initial dynamic interference compensation model using historical external dynamic interference factors to obtain a target dynamic interference compensation model, wherein the historical external dynamic interference factors include data on vibration interference, temperature interference, and wind disturbance swing; a second acquisition unit, configured to acquire the distance between the first marking point and the second marking point of the current catenary cable, an external dynamic interference factor, and a radial dimension, and input the external dynamic interference factor into the target dynamic interference compensation model to correspondingly obtain the current marking point distance, current dynamic interference compensation data, and current radial dimension; a comparing unit, configured to generate a final distance based on the current marking point distance and the current dynamic interference compensation data, and compare the final distance with the initial distance to determine a marking point distance difference; The result unit is used to calculate the difference according to the distance difference between the marking points and the current radial size to obtain a reference factor for replacing the load-bearing cable.

[0099] In a third aspect, the present application provides a computer storage medium having a computer program stored thereon, characterized in that the computer program implements the steps of the aforementioned method when executed by a processor.

[0100] In a fourth aspect, the present application provides a computer program, characterized in that when the computer program is executed by a processor, the steps of the aforementioned method are implemented.

[0101] Those skilled in the art will appreciate that all or part of the processes in the above-mentioned embodiments can be implemented by instructing the relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0102] The various embodiments in the present disclosure are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0103] The scope of protection of the present disclosure is not limited to the above-described embodiments. Obviously, those skilled in the art may make various modifications and variations to the present disclosure without departing from the scope and spirit of the present disclosure. If such modifications and variations fall within the scope of the claims of the present disclosure and their equivalents, the present disclosure is intended to include such modifications and variations.

Claims

1. An algorithm for replacing catenary cables in elastic chain suspension of high-speed railway contact network, characterized in that: Methods include: Obtaining the axial length and radial dimension of the catenary cable, arranging marking points at preset intervals based on the axial length, and correspondingly obtaining an initial radial dimension and an initial distance between a first marking point and a second marking point; Using historical external dynamic interference factors, the initial dynamic interference compensation model is trained to obtain a target dynamic interference compensation model, wherein the historical external dynamic interference factors include vibration interference, temperature interference, and wind disturbance swing data; Obtaining the distance between the first marking point and the second marking point of the current catenary, the external dynamic interference factor, and the radial dimension, and inputting the external dynamic interference factor into the target dynamic interference compensation model to correspondingly obtain the current marking point distance, current dynamic interference compensation data, and current radial dimension; Generating a final distance according to the current marking point distance and the current dynamic interference compensation data, and comparing the final distance with the initial distance to determine a marking point distance difference; According to the distance difference between the marking points and the current radial size, the difference is calculated to obtain a reference factor for replacing the load-bearing cable.

2. The algorithm for replacing catenary cables of elastic chain suspension of high-speed railway contact network according to claim 1 is characterized in that: The step of obtaining the axial length and radial dimension of the catenary cable, arranging marking points at preset intervals based on the axial length, and correspondingly obtaining the initial radial dimension and the initial distance between the first marking point and the second marking point includes: Obtain the axial length and radial dimension of the load-bearing cable between the two columns to obtain the initial axial length and initial radial dimension; Arranging marking points at predetermined intervals according to the initial axial length to obtain at least a first marking point and a second marking point; An initial distance is obtained according to the first marking point and the second marking point.

3. The algorithm for replacing catenary cables of elastic chain suspension of high-speed railway contact network according to claim 1, characterized in that: The step of using historical external dynamic interference factors to train the initial dynamic interference compensation model to obtain the target dynamic interference compensation model includes: In the test field, the vehicle speed and vibration are simulated to obtain the shape changes of the catenary under different speeds and vibrations, and obtain the vibration interference data; In the test field, temperature changes are simulated to obtain the shape changes of the catenary at different temperatures and obtain temperature interference data; In the test field, wind speed and direction are simulated to obtain the shape changes of the catenary under different wind speeds and directions, and obtain wind disturbance swing data; The historical external dynamic interference factors are obtained by combining the data of vibration interference, temperature interference and wind disturbance swing, and the corresponding morphological changes of the catenary cables; An initial dynamic interference compensation model is constructed, and the historical external dynamic interference factors are used as training data for training to obtain a target dynamic interference compensation model.

4. The algorithm for replacing catenary cables of elastic chain suspension of high-speed railway contact network according to claim 1, characterized in that: The step of obtaining the distance between the first marking point and the second marking point of the current catenary cable, the external dynamic interference factor, and the radial dimension, and inputting the external dynamic interference factor into the target dynamic interference compensation model to correspondingly obtain the current marking point distance, current dynamic interference compensation data, and current radial dimension includes: Using a laser scanner to obtain the distance between the first marking point and the second marking point of the current catenary cable, as well as the radial dimension, to obtain the current marking point distance and the current radial dimension; The data of vibration interference, temperature interference and wind disturbance swing at the current location of the catenary are obtained, and the external dynamic interference factors formed are obtained to obtain the current dynamic interference compensation data.

5. The algorithm for replacing catenary cables of elastic chain suspension of high-speed railway contact network according to claim 1, characterized in that: The step of generating a final distance based on the current marking point distance and the current dynamic interference compensation data, and comparing the final distance with the initial distance to determine the marking point distance difference includes: Utilizing the current marking point distance and the current dynamic interference compensation data, performing difference calculation to generate a final distance; The final distance is compared with the initial distance, and a difference is calculated to determine the distance difference of the marking point.

6. The algorithm for replacing catenary cables of elastic chain suspension of high-speed railway contact network according to claim 1, characterized in that: The step of calculating the difference based on the distance difference between the marking points and the current radial size to obtain a reference factor for replacing the catenary cable includes: Comparing the distance difference between the marked points and the current radial size with the standard information for Messenger cable replacement, calculating the difference, and obtaining a Messenger cable replacement time interval; The time interval for replacing the catenary cables is used as a reference factor for replacing the catenary cables.

7. The algorithm for replacing catenary cables of elastic chain suspension of high-speed railway contact network according to claim 1, characterized in that: The step of comparing the distance difference between the marking points and the current radial size with the standard information of the Messenger cable replacement, calculating the replacement time, and obtaining the Messenger cable replacement time interval includes: Obtaining a variation function based on the initial state of the catenary cable, the distance difference to the current marking point, and the time required for the current radial dimension; The time interval for replacing the catenary cables is predicted based on the variation function and the difference information.

8. A catenary cable replacement system for elastic chain suspension of high-speed railway contact network, characterized in that: The system for replacing catenary cables of an elastic chain suspension of a high-speed railway contact network according to any one of claims 1 to 7 comprises: a first acquiring unit, configured to acquire an axial length and a radial dimension of the catenary cable, and arrange marker points at preset intervals based on the axial length to obtain an initial radial dimension and an initial distance between the first marker point and the second marker point; a model unit, configured to train an initial dynamic interference compensation model using historical external dynamic interference factors to obtain a target dynamic interference compensation model, wherein the historical external dynamic interference factors include data on vibration interference, temperature interference, and wind disturbance swing; a second acquisition unit, configured to acquire the distance between the first marking point and the second marking point of the current catenary cable, an external dynamic interference factor, and a radial dimension, and input the external dynamic interference factor into the target dynamic interference compensation model to correspondingly obtain the current marking point distance, current dynamic interference compensation data, and current radial dimension; a comparing unit, configured to generate a final distance based on the current marking point distance and the current dynamic interference compensation data, and compare the final distance with the initial distance to determine a marking point distance difference; The result unit is used to calculate the difference according to the distance difference between the marking points and the current radial size to obtain a reference factor for replacing the load-bearing cable.

9. A computer storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the algorithm for replacing the catenary cables of the elastic chain suspension of the high-speed railway contact network according to any one of claims 1 to 7 are implemented.

10. A computer program, characterized in that When the computer program is executed by a processor, the steps of the algorithm for replacing the catenary cables of the elastic chain suspension of the high-speed railway contact network according to any one of claims 1 to 7 are implemented.

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