Elastic non-uniformity rapid calculation and clue tension ratio adjustment method

Abstract

The invention discloses an elastic non-uniformity rapid calculation and clue tension ratio adjustment method, and relates to the technical field of catenary, and the method comprises the steps: carrying out the parameter estimation of an elastic non-uniformity coefficient and a clue tension ratio through employing a cubic polynomial, constructing a corresponding first mathematical model, and carrying out the derivation to obtain a second mathematical model; obtaining an original clue tension ratio in the overhead line system, and recording the original clue tension ratio as a first clue tension ratio; inputting the first cable tension ratio into a second mathematical model, and outputting an elastic non-uniformity coefficient as a first elastic non-uniformity coefficient; whether the first elastic non-uniform coefficient meets a preset condition or not is judged, if yes, no action is performed, and if not, a target elastic non-uniform coefficient is obtained and input into the first mathematical model, and a corresponding clue tension ratio is output and recorded as a second clue tension ratio; and with the second cable tension ratio as an adjustment target, the cable tension is adjusted by adopting a preset method. According to the method, the elastic non-uniform coefficient can be quickly calculated, and the cable tension can be accurately adjusted.

Description

Technical Field

[0001] This invention relates to the field of overhead contact line technology, and in particular to a method for rapid calculation of elastic non-uniformity and adjustment of wire tension ratio. Background Technology

[0002] The contact force and positioning point lift under the interaction between the pantograph and the catenary are the main indicators for evaluating the current collection quality of the pantograph and catenary. The dynamic performance of the pantograph and catenary is mainly determined by three aspects: the characteristics of the pantograph, the static performance of the catenary, and the wave propagation characteristics under the interaction between the pantograph and the catenary. The elasticity of the catenary, as a key static performance indicator of the catenary, has an important impact on the dynamic performance of the pantograph and catenary. The selection of the tension of the contact wire and the catenary cable plays a very important role in the elasticity of the catenary.

[0003] Currently, the tension selection of the contact wire and the catenary in the overhead contact system is mainly determined through a combination of multiple methods, including theoretical calculation, numerical simulation, field measurement, engineering experience, and construction technology optimization. Its core relies on the theoretical calculation of the basic mechanical model and the construction of the numerical simulation model. However, it is not adaptable to complex working conditions, the simulation takes a long time, and the simulation data has a large error with the actual situation. Summary of the Invention

[0004] In view of this, this application provides a method for rapid calculation of elastic non-uniformity and adjustment of thread tension ratio to overcome the shortcomings of the prior art.

[0005] The first aspect of this application provides a method for rapid calculation of elastic non-uniformity and adjustment of line tension ratio, including: The elastic non-uniformity coefficient and the thread tension ratio are estimated using a cubic polynomial, and a mathematical model of the thread tension ratio with respect to the elastic non-uniformity coefficient is constructed, which is denoted as the first mathematical model. The first mathematical model is derived to obtain a mathematical model of the elastic non-uniformity coefficient with respect to the tension ratio of the thread, which is denoted as the second mathematical model. Obtain the original tension ratio of the overhead contact line, and record it as the first tension ratio of the contact line; Input the first line tension ratio into the second mathematical model, and output the elastic non-uniformity coefficient as the first elastic non-uniformity coefficient. Determine whether the first elastic non-uniformity coefficient meets the preset condition. If yes, no action is taken. If no, the target elastic non-uniformity coefficient is obtained and input into the first mathematical model, and the corresponding clue tension ratio is output, which is recorded as the second clue tension ratio. Using the second thread tension ratio as the adjustment target, the thread tension is adjusted using a preset method.

[0006] In one possible implementation of the first aspect, constructing the first mathematical model includes: For the tension ratio of clues, The coefficient of elastic non-uniformity, , , and All are fitting coefficients.

[0007] One possible implementation of the first aspect also includes: Based on the first mathematical model, construct a vector of clue tension ratio coefficients; Based on the aforementioned thread tension ratio coefficient vector and the input elastic non-uniformity coefficient, the corresponding thread tension ratio is determined.

[0008] In one possible implementation of the first aspect, constructing the thread tension ratio coefficient vector includes: The vector represents the tension ratio coefficients of the thread.

[0009] In one possible implementation of the first aspect, it further includes obtaining the corresponding value of the thread tension ratio coefficient vector: Based on prior engineering data, we construct a vector value table for the line tension ratio coefficient in a simple catenary suspension, denoted as the first value table, and a vector value table for the line tension ratio coefficient in an elastic catenary suspension, denoted as the second value table. Based on the first value table, the value of the line tension ratio coefficient vector in the simple chain suspension is retrieved by querying; Based on the second value table, the value of the line tension ratio coefficient vector in the elastic catenary suspension is retrieved.

[0010] In one possible implementation of the first aspect, the second mathematical model is obtained as follows: , , and All are fitting coefficients.

[0011] One possible implementation of the first aspect also includes: Based on the second mathematical model, a coefficient vector of elastic non-uniformity coefficient is constructed, denoted as the first coefficient vector; Based on the first coefficient vector and the input thread tension ratio, the corresponding elastic non-uniformity coefficient is determined.

[0012] In one possible implementation of the first aspect, constructing the first coefficient vector includes: This is the first coefficient vector.

[0013] In one possible implementation of the first aspect, the method further includes obtaining the value corresponding to the first coefficient vector: Based on prior engineering data, we construct a table for the first coefficient vector in a simple catenary suspension, denoted as the third table, and a table for the first coefficient vector in an elastic catenary suspension, denoted as the fourth table. Based on the third value table, the first coefficient vector in the simple chain suspension is queried and the value is obtained; Based on the fourth value table, the first coefficient vector in the elastic chain suspension is queried and its value is obtained.

[0014] In one possible implementation of the first aspect, the preset method includes: and / or reduce the tension of the load-bearing cable; and / or increase the contact wire tension; And / or simultaneously reduce the tension of the catenary cable and increase the tension of the contact wire.

[0015] Its beneficial effects are as follows: This invention discloses a method for rapid calculation of elastic non-uniformity and adjustment of wire tension ratio. It constructs a first mathematical model by estimating the elastic non-uniformity coefficient and wire tension ratio using a cubic polynomial, and derives a second mathematical model. The original wire tension ratio in the contact network is obtained and denoted as the first wire tension ratio. The first wire tension ratio is input into the second mathematical model, and the elastic non-uniformity coefficient is output and denoted as the first elastic non-uniformity coefficient. It determines whether the first elastic non-uniformity coefficient meets a preset condition; if yes, no action is taken; otherwise, the target elastic non-uniformity coefficient is obtained and input into the first mathematical model, and the corresponding wire tension ratio is output and denoted as the second wire tension ratio. Using the second wire tension ratio as the adjustment target, the wire tension is adjusted using a preset method. This invention solves the problems of insufficient adaptability to complex working conditions, long simulation time, large errors, and inability to adjust in a timely manner in existing methods that rely on theoretical calculations and numerical simulations for wire tension selection. It achieves rapid calculation of the elastic non-uniformity coefficient and precise adjustment of wire tension. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of a method for rapid calculation of elastic nonuniformity and adjustment of line tension ratio provided in an embodiment of this application; Figure 2 This is a schematic diagram of the dynamic contact force curve of the pantograph-catenary system of the Beijing-Tianjin Intercity Railway before optimization in the embodiments of this application; Figure 3 This is a schematic diagram of the optimized pantograph-catenary dynamic contact force curve of the Beijing-Tianjin Intercity Railway in an embodiment of this application; Figure 4 This is a logic diagram of the thread tension ratio adjustment method in the embodiments of this application. Detailed Implementation

[0018] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0019] In this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0020] Example In existing technologies, the tension selection of the contact wire and the catenary in the overhead contact system is mainly determined by a combination of multiple methods, including theoretical calculation, numerical simulation, field measurement, engineering experience, and construction process optimization. Its core relies on the theoretical calculation of the basic mechanical model and the construction of the numerical simulation model. However, it is not adaptable to complex working conditions, the simulation takes a long time, and the simulation data has a large error with the actual situation.

[0021] Therefore, this application provides a method for rapid calculation of elastic non-uniformity and adjustment of thread tension ratio, such as... Figure 1 As shown, it includes: The elastic non-uniformity coefficient and the thread tension ratio are estimated using a cubic polynomial, and a mathematical model of the thread tension ratio with respect to the elastic non-uniformity coefficient is constructed, which is denoted as the first mathematical model. The first mathematical model is derived to obtain a mathematical model of the elastic non-uniformity coefficient with respect to the tension ratio of the thread, which is denoted as the second mathematical model. Obtain the original tension ratio of the overhead contact line, and record it as the first tension ratio of the contact line; Input the first line tension ratio into the second mathematical model, and output the elastic non-uniformity coefficient as the first elastic non-uniformity coefficient. Determine whether the first elastic non-uniformity coefficient meets the preset condition. If yes, no action is taken. If no, the target elastic non-uniformity coefficient is obtained and input into the first mathematical model, and the corresponding clue tension ratio is output, which is recorded as the second clue tension ratio. Using the second thread tension ratio as the adjustment target, the thread tension is adjusted using a preset method.

[0022] The application provides a technical solution for rapid calculation of elastic non-uniformity and adjustment of line tension ratio, combined with Figure 4 (The implementation logic diagram of the scheme in this embodiment) is explained as follows: First, regarding the rapid calculation of elastic non-uniformity, this embodiment uses cubic polynomial fitting to estimate the parameters of the elastic non-uniformity coefficient and the thread tension ratio, and constructs the first mathematical model as follows: For the tension ratio of clues, The coefficient of elastic non-uniformity, , , and All are fitting coefficients; construct the clue tension ratio coefficient vector. The value of the line tension configuration can be determined based on the line tension ratio coefficient vector and the elastic non-uniformity coefficient. The value of the line tension ratio coefficient vector is obtained by constructing a first value table and a second value table through engineering prior data and then looking up the tables, as shown in Table 1-1 Line Tension Ratio Coefficient Vector Table for Simple Chain Suspension and Table 1-2 Line Tension Ratio Coefficient Vector Table for Elastic Chain Suspension. The value of the line tension ratio coefficient vector can be quickly obtained by querying the first value table and the second value table.

[0023] The first value table is as follows: Table 1-1 Vector Table of Line Tension Ratio Coefficients in Simple Chain Suspension The second value table is as follows: Table 1-2 Vector Table of Line Tension Ratio Coefficients in Elastic Catenary Suspension Based on the constructed first mathematical model, the second mathematical model is derived as follows: , , and These are all fitting coefficients, and a coefficient vector (first coefficient vector) is constructed for the elastic non-uniformity coefficient. The value of the elastic non-uniformity coefficient can be determined based on the first coefficient vector and the tension ratio of the lead wire. The value of the first coefficient vector is obtained by constructing a third value table and a fourth value table based on prior engineering data. See Table 2-1 for the first coefficient vector in a simple catenary suspension and Table 2-2 for the first coefficient vector in an elastic catenary suspension. The value of the first coefficient vector can be quickly obtained by querying the third value table and the fourth value table.

[0024] The third value table is as follows: Table 2-1 First Coefficient Vector Table for Simple Chain Suspension The fourth value table is as follows: Table 2-2 First Coefficient Vector Table for Elastic Catenary Suspension This embodiment constructs a first mathematical model of the line tension ratio with respect to the elastic non-uniformity coefficient, and derives a second mathematical model of the elastic non-uniformity coefficient with respect to the line tension ratio. By using the first, second, third, and fourth value tables, the corresponding coefficient vectors can be quickly retrieved, enabling rapid estimation of the elastic non-uniformity coefficient or the line tension ratio.

[0025] After constructing the first mathematical model and the second mathematical model, the original wire tension ratio in the overhead contact system is obtained and recorded as the first wire tension ratio. This first wire tension ratio is then input into the second mathematical model, which quickly outputs the elastic non-uniformity coefficient under this condition, recorded as the first elastic non-uniformity coefficient. It is then determined whether the first elastic non-uniformity coefficient meets preset conditions. These preset conditions can be obtained through relevant standards specifying a lower limit value for the elastic non-uniformity coefficient, or a corresponding lower limit value can be proposed based on actual engineering quality requirements. If the elastic non-uniformity coefficient before optimization meets the preset conditions, no action is taken, but the dynamic performance of the pantograph-catenary system needs to be evaluated. If the dynamic performance requirements are met and no further optimization is needed, the process ends. If the elastic non-uniformity coefficient before optimization does not meet the preset conditions, a target elastic non-uniformity coefficient needs to be specified and input into the first mathematical model, which quickly outputs the corresponding wire tension ratio, recorded as the second wire tension ratio. Using the second wire tension ratio as the adjustment target, the wire tension is adjusted using a preset method to achieve the adjustment target.

[0026] The preset methods include three approaches: reducing the tension of the catenary cable; increasing the tension of the contact wire; and simultaneously reducing the tension of the catenary cable and increasing the tension of the contact wire. In practical applications, if there is room to increase the tension of the contact wire, it should be increased first. Increasing the tension of the contact wire can not only optimize the elasticity index that has a positive impact on the dynamic performance of the pantograph-catenary system, but also improve the wave propagation speed, reduce the reflection coefficient, and change the wave characteristics of the catenary. If increasing the tension of the contact wire would have an adverse effect on the catenary equipment, then reducing the tension of the catenary cable should be considered. However, the optimized effects need to be verified through pantograph-catenary dynamic simulation.

[0027] Furthermore, when adjusting the wire tension with the second wire tension ratio as the adjustment target, and forming a new catenary scheme based on the adjusted wire tension, the dynamic performance of the pantograph-catenary system is evaluated. If the dynamic performance meets the standard requirements and is improved compared to before optimization, it indicates that the wire tension ratio adjustment was successful, and the process ends without further optimization. If the dynamic performance does not meet the standard requirements or is not improved compared to before optimization, it indicates that the wire tension ratio adjustment was unsuccessful. The positive benefit from the reduction in the elasticity non-uniformity coefficient after adjustment is less than the negative benefit from the increase in average elasticity, thus leading to a deterioration in the dynamic performance of the pantograph-catenary system. In this case, it is necessary to adjust the wire tension ratio again and perform iterative calculations of the elasticity non-uniformity coefficient until the dynamic performance of the pantograph-catenary system meets the standard requirements.

[0028] To further verify the effectiveness of this scheme in rapidly calculating the elastic non-uniformity coefficient and adjusting the wire tension ratio, the parameters of the Beijing-Tianjin Intercity Railway and the Chengdu-Chongqing High-Speed ​​Railway, which have already undergone dropper arrangement optimization, are used as the optimization objects in this embodiment. The wire tension ratio adjustment method in this embodiment is applied to further optimize their elastic non-uniformity coefficient, and the optimization effect is verified through pantograph-catenary simulation. The coefficients related to this method in the above two catenary scheme systems are shown in Table 3-1: Table 3-1 Contact Network Input Parameters In Table 2-1 , The corresponding parameters yield the elastic non-uniformity coefficient vector of the catenary on the Beijing-Tianjin Intercity Railway. The tension ratio of the clue is 0.778. Substituting both into the second mathematical model, the estimated value of the elastic non-uniformity coefficient is 0.2896. Therefore, the estimated value of the elastic non-uniformity coefficient is 28.96%.

[0029] Similarly, look up Table 2-2 , The corresponding parameters yield the elastic non-uniformity coefficient vector of the Chengdu-Chongqing High-Speed ​​Railway. The tension ratio of the clue is 0.7. Substituting both into the second mathematical model, the estimated value of the elastic non-uniformity coefficient is 0.0911. Therefore, the estimated value of the elastic non-uniformity coefficient is 9.11%.

[0030] For the Beijing-Tianjin Intercity Railway, considering that the current elastic non-uniformity coefficient does not meet the 25% requirement for 350km / h as stipulated in the Chinese high-speed railway design specifications, an elastic non-uniformity coefficient of 25% is used as the target for optimization. Considering that optimizing the non-uniform arrangement of mid-span droppers will reduce the corresponding elastic non-uniformity coefficient, the target value is set to 26%, referring to Table 1-1. , The corresponding parameters, , The target value is set to 0.26. Substituting both values ​​into the first mathematical model, the maximum thread tension ratio is found to be 0.6063 when the target elastic non-uniformity coefficient is met. For the Chengdu-Chongqing High-Speed ​​Railway, the target is to reduce the value by 1% based on the estimated value. The target value is set to 0.811. (Refer to Table 1-2) , The corresponding parameters, The maximum tension ratio was calculated to be 0.5996.

[0031] To demonstrate that the improvement in pantograph-catenary dynamic performance is due to the improved elasticity non-uniformity coefficient of the overhead contact system, it is necessary to avoid the impact of increasing the wave propagation speed of the contact wire. Therefore, this embodiment achieves the optimization of the elasticity non-uniformity coefficient solely by reducing the tension of the catenary cable. Thus, in the two sets of calculations for the Beijing-Tianjin Intercity Railway and the Chengdu-Chongqing High-Speed ​​Railway, the contact wire tension is kept constant, and the catenary cable tension is rounded down to 16kN and 18kN respectively.

[0032] After adjusting the catenary tension, the catenary tension combination for the Beijing-Tianjin Intercity Railway is 27kN+16kN, and for the Chengdu-Chongqing High-Speed ​​Railway, it is 30kN+18kN. Using the SSS400+ type pantograph with dual pantographs as two examples after tension adjustment, pantograph-catenary dynamics simulation was performed. The operating speed was 350km / h, the static contact force was taken as 70kN, and the aerodynamic coefficient was taken as 0.00097. The statistics of the pantograph-catenary dynamic contact force before and after optimization are shown in Table 4-1. Table 4-1 Comparison of dynamic contact force statistics of pantograph before and after optimization For the Beijing-Tianjin Intercity Railway, after adjusting the catenary tension, the standard deviation of the contact force of the front bow increased to some extent, but the statistical value of the standard deviation of the contact force remained within an acceptable range. While optimizing the elastic non-uniformity coefficient, the maximum value and standard deviation of the contact force of the rear bow significantly decreased due to the reduction in the reflection coefficient. The standard deviation decreased from 0.85N to 10.098N, and the maximum contact force decreased from 346.74N to 313.31N. Both indicators showed significant improvement from a critically exceeding state. Therefore, the adjustment of the catenary tension ratio had a positive effect. The dynamic contact force curve of the pantograph-catenary system on the Beijing-Tianjin Intercity Railway is shown below. Figure 2 (Before optimization) and Figure 3 (After optimization) As shown. For the Chengdu-Chongqing High-Speed ​​Railway, according to the statistical results in Table 4-1, the dynamic performance indicators of the pantograph-catenary system all decreased significantly after the adjustment of the catenary tension. This indicates that the benefits brought by the reduction of the elastic non-uniformity coefficient cannot compensate for the losses brought by the increase in elasticity. Therefore, the adjustment of the catenary tension was unsuccessful and further iterative processing can be carried out. However, since the elastic non-uniformity coefficient was already at a good level before optimization, and the statistical values ​​of the standard deviation of the contact force of the front and rear bows were 25.468N and 9.316N, respectively, which were also within the acceptable range, no further optimization is required.

[0033] In summary, this embodiment uses the optimized catenary systems of the Beijing-Tianjin Intercity Railway and the Chengdu-Chongqing High-Speed ​​Railway as input conditions. By utilizing the rapid calculation method of elastic non-uniformity coefficient and the line tension ratio adjustment method provided in this embodiment, the catenary parameters are optimized. Without changing the catenary wave propagation speed, the Chengdu-Chongqing High-Speed ​​Railway catenary does not require further optimization, while the pantograph-catenary dynamic performance of the Beijing-Tianjin Intercity Railway is significantly improved.

[0034] In some embodiments, constructing the first mathematical model includes: For the tension ratio of clues, The coefficient of elastic non-uniformity, , , and All are fitting coefficients.

[0035] In some embodiments, it also includes: Based on the first mathematical model, construct a vector of clue tension ratio coefficients; Based on the aforementioned thread tension ratio coefficient vector and the input elastic non-uniformity coefficient, the corresponding thread tension ratio is determined.

[0036] In some embodiments, constructing the thread tension ratio coefficient vector includes: The vector represents the tension ratio coefficients of the thread.

[0037] In some embodiments, the method further includes obtaining the corresponding value of the thread tension ratio coefficient vector: Based on prior engineering data, we construct a vector value table for the line tension ratio coefficient in a simple catenary suspension, denoted as the first value table, and a vector value table for the line tension ratio coefficient in an elastic catenary suspension, denoted as the second value table. Based on the first value table, the value of the line tension ratio coefficient vector in the simple chain suspension is retrieved by querying; Based on the second value table, the value of the line tension ratio coefficient vector in the elastic catenary suspension is retrieved.

[0038] In some embodiments, obtaining the second mathematical model includes: , , and All are fitting coefficients.

[0039] In some embodiments, it also includes: Based on the second mathematical model, a coefficient vector of elastic non-uniformity coefficient is constructed, denoted as the first coefficient vector; Based on the first coefficient vector and the input thread tension ratio, the corresponding elastic non-uniformity coefficient is determined.

[0040] In some embodiments, constructing the first coefficient vector includes: This is the first coefficient vector.

[0041] In some embodiments, the method further includes obtaining the value corresponding to the first coefficient vector: Based on prior engineering data, we construct a table for the first coefficient vector in a simple catenary suspension, denoted as the third table, and a table for the first coefficient vector in an elastic catenary suspension, denoted as the fourth table. Based on the third value table, the first coefficient vector in the simple chain suspension is queried and the value is obtained; Based on the fourth value table, the first coefficient vector in the elastic chain suspension is queried and its value is obtained.

[0042] In some embodiments, the preset method includes: and / or reduce the tension of the load-bearing cable; and / or increase the contact wire tension; And / or simultaneously reduce the tension of the catenary cable and increase the tension of the contact wire.

[0043] Those skilled in the art will further recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computing software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0044] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0045] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A method for quick calculation of elastic heterogeneity and adjustment of tension ratio of a cable, characterized in that, The method comprises the following steps: a third-degree polynomial is used to estimate parameters of the elastic uneven coefficient and the cable tension matching, a mathematical model of the cable tension matching with respect to the elastic uneven coefficient is constructed, and the mathematical model is recorded as a first mathematical model; the first mathematical model is deduced to obtain a mathematical model of the elastic uneven coefficient with respect to the cable tension matching, and the mathematical model is recorded as a second mathematical model; an original cable tension matching in the catenary is obtained, and the original cable tension matching is recorded as a first cable tension matching; the first cable tension matching is input into the second mathematical model, and an elastic uneven coefficient is output, which is recorded as a first elastic uneven coefficient; it is judged whether the first elastic uneven coefficient meets a preset condition, if yes, no action is performed, and if no, a target elastic uneven coefficient is obtained and input into the first mathematical model, and a corresponding cable tension matching is output, which is recorded as a second cable tension matching; the second cable tension matching is taken as an adjustment target, and a preset method is used to adjust the cable tension.

2. The method according to claim 1, wherein The first mathematical model is constructed, and the construction comprises the following steps: for the thread tension ratio, for the elastic unevenness coefficient, , , and are fitting coefficients.

3. The method of claim 2, wherein the method further comprises: The method further comprises the following steps: a cable tension matching coefficient vector is constructed based on the first mathematical model; a corresponding cable tension matching is determined based on the cable tension matching coefficient vector and an input elastic uneven coefficient.

4. The method of claim 3, wherein the method further comprises: The cable tension matching coefficient vector is constructed, and the construction comprises the following steps: is the vector of the tension ratio coefficients of the clues.

5. The method of claim 4, wherein the method further comprises: The corresponding value of the cable tension matching coefficient vector is obtained: first and second value tables of the cable tension matching coefficient vector in simple and elastic chain suspensions are respectively constructed based on engineering prior data, the first value table is recorded as a first value table, and the second value table is recorded as a second value table; the cable tension matching coefficient vector in the simple chain suspension is queried and valued based on the first value table; the cable tension matching coefficient vector in the elastic chain suspension is queried and valued based on the second value table.

6. The method of claim 2, wherein the method further comprises: The second mathematical model is obtained, and the obtaining comprises the following steps: , , and are fitting coefficients.

7. The method of claim 6, wherein the method further comprises: calculating the tension of the cable based on the calculated elastic inhomogeneity of the cable. The method further comprises the following steps: a coefficient vector of the elastic uneven coefficient is constructed based on the second mathematical model, and the coefficient vector is recorded as a first coefficient vector; a corresponding elastic uneven coefficient is determined based on the first coefficient vector and an input cable tension matching.

8. The method of claim 7, wherein the method further comprises: The first coefficient vector is constructed, and the construction comprises the following steps: is the first coefficient vector.

9. The method of claim 8, wherein the method further comprises: The corresponding value of the first coefficient vector is obtained: first and second value tables of the first coefficient vector in simple and elastic chain suspensions are respectively constructed based on engineering prior data, the first value table is recorded as a third value table, and the second value table is recorded as a fourth value table; the first coefficient vector in the simple chain suspension is queried and valued based on the third value table; the first coefficient vector in the elastic chain suspension is queried and valued based on the fourth value table.

10. The method of claim 1, wherein the method further comprises: calculating the tension of the cable based on the calculated elastic inhomogeneity of the cable. The preset method comprises the following steps: and / or reducing the messenger cable tension; and / or increasing the contact wire tension; and / or reducing the messenger cable tension and increasing the contact wire tension at the same time.

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