Drainage wire displacement calculation method under wind action and related equipment

Abstract

The embodiment of the invention discloses a drainage wire displacement calculation method under the action of wind power and related equipment. The method comprises the steps of obtaining a wind power load borne by a drainage wire according to a wind power time-varying model and a finite element geometric model; and obtaining wind deflection displacement data of the drainage wire according to the wind load and kinetic analysis. According to the method, the wind load of the drainage wire is obtained on the basis of finite elements, the wind deflection displacement data is obtained on the basis of the wind load and kinetic analysis, related personnel can be better assisted in quantitative analysis of the wind deflection fault of the transformer substation, potential hazards in the transformer substation are eliminated, and the method has great significance in guaranteeing safe and stable operation of a power grid.

Description

[Technical field]

[0001] The present invention relates to the technical field of wind dynamic stability analysis, and in particular to a method for calculating the displacement of a drainage line under wind action and related equipment. [Background technology]

[0002] In recent years, wind-induced discharge accidents have become one of the important factors affecting the safety and stability of power systems. They generally occur on transmission lines, but wind-induced flashovers have also occurred on substation drainage lines. Usually, drainage lines are used as connecting elements, mainly connecting different power equipment, and play the role of drainage and equipment connection. If a wind-induced flashover failure occurs under the action of wind, it may cause the line to trip at the least, or cause the entire station to lose pressure at the worst, destroying the stability of the power system and endangering the safe and stable operation of the power grid.

[0003] Under normal circumstances, the drainage line in the substation can withstand a strong wind of about level 11, but under extreme wind speed conditions, the drainage line will have serious wind deviation, and the safety distance between it and the gantry is insufficient, and the drainage line will discharge to the gantry. Recently, the drainage line wind deviation discharge phenomenon occurred in a 220kV substation in the plateau area, causing the busbar differential protection and transformer differential protection to operate. Therefore, studying the dynamic characteristics of the substation drainage line under different wind speeds is of great significance to eliminating potential hidden dangers in the substation and ensuring the safe and stable operation of the power grid. [Summary of the invention]

[0004] In view of this, the present invention provides a method for calculating the displacement of a drainage line under the action of wind and related equipment.

[0005] The specific technical solution of the first embodiment of the present invention is: a method for calculating the displacement of a drainage line under the action of wind, the method comprising: constructing a wind force variation model of the substation over time based on the meteorological data of the substation; establishing a finite element geometric model of the drainage line of the substation; obtaining the wind load on the drainage line based on the wind force variation model over time and the finite element geometric model; and obtaining the wind deviation displacement data of the drainage line based on the wind load and dynamic analysis.

[0006] Preferably, the wind force variation over time model of the substation is constructed based on the meteorological data of the substation, including: determining the distribution range of wind direction and the set of wind force values; determining the maximum wind force based on the meteorological data, the distribution range and the set of wind force values; determining the function curve of wind force variation over time based on the maximum wind force, the distribution range, the set of wind force values ​​and the meteorological data; the function curve of wind force variation over time is the wind force variation model over time.

[0007] Preferably, the establishment of a finite element geometric model of the drainage line of the substation includes: using a drone to perform three-dimensional laser scanning on the drainage line intervals to obtain a three-dimensional spatial data set of the drainage line; fitting the three-dimensional spatial data set by function fitting to obtain a spatial function curve expression of the drainage line; and obtaining a finite element geometric model of the drainage line based on the spatial function curve expression and the diameter of the drainage line.

[0008] Preferably, obtaining the wind load on the drainage line based on the wind force time-varying model and the finite element geometric model includes: setting boundary conditions of fluid and dynamic analysis of the wind force time-varying model; obtaining the wind load on the drainage line based on the boundary conditions of the fluid and dynamic analysis and the finite element geometric model.

[0009] Preferably, the wind load on the drainage line is obtained according to the boundary conditions of the fluid and dynamic analysis and the finite element geometric model, including: adding and setting the fluid analysis physical field of the wind time-varying model, and setting the fluid domain inlet, outlet and open boundary of the wind time-varying model; the fluid domain inlet, outlet and open boundary constitute the boundary conditions of the dynamic analysis; adding and setting the fluid-solid coupling multi-physical field of the wind time-varying model; obtaining the wind load on the drainage line according to the fluid analysis physical field, the fluid domain inlet, outlet and open boundary, the fluid-solid coupling multi-physical field and the finite element geometric model.

[0010] Preferably, the wind load on the drainage line is obtained according to the fluid analysis physical field, the fluid domain inlet, outlet and open boundary, the fluid-solid coupling multi-physical field and the finite element geometric model, including: according to the scale distribution of the finite element geometric model, appropriate grid division is performed to generate a corresponding node topology, and a calculation equation matrix is ​​obtained according to the node topology; for the fluid analysis problem of fluid-solid phase coupling, a separate iterative solver is selected, the termination condition, maximum number of iterations, time step type and PID control parameters of the solver are set, and the wind load is obtained by calculation in combination with the fluid analysis physical field, the fluid domain inlet, outlet and open boundary, and the fluid-solid coupling multi-physical field.

[0011] Preferably, the method of obtaining the windage displacement data of the drainage line according to the wind load and dynamic analysis includes: setting a material model of the drainage line and constraints and gravity at both ends of the drainage line; using the wind load as a load for dynamic analysis, selecting a direct transient solver for the dynamic analysis problem of the solid, and setting the termination condition, algorithm type, time span and corresponding step size of the solver, and calculating in combination with the dynamic analysis to obtain a time-varying cloud graph of the displacement distribution of the drainage line; and obtaining the windage displacement data of the drainage line based on the time-varying cloud graph of the displacement distribution.

[0012] The specific technical solution of the second embodiment of the present invention is: a drainage line displacement calculation system under wind action, the system comprising: a wind model construction module, a finite element geometric model construction module, a wind load acquisition module and a displacement acquisition module; the wind model construction module is used to construct a wind time-varying model of the substation according to the meteorological data of the substation; the finite element geometric model construction module is used to establish a finite element geometric model of the drainage line of the substation; the wind load acquisition module is used to obtain the wind load on the drainage line according to the wind time-varying model and the finite element geometric model; the displacement acquisition module is used to obtain the wind deviation displacement data of the drainage line according to the wind load and dynamic analysis.

[0013] The specific technical solution of the third embodiment of the present invention is: a drainage line displacement calculation device under the action of wind, including a memory and a processor, the memory stores a computer program, and when the computer program is executed by the processor, the processor executes the steps of the method described in any one of the first embodiments of the present application.

[0014] The specific technical solution of the fourth embodiment of the present invention is: a computer-readable storage medium storing a computer program, which, when executed by a processor, enables the processor to perform the steps of the method described in any one of the first embodiments of the present application.

[0015] Implementing the embodiments of the present invention will have the following beneficial effects:

[0016] The present invention obtains the wind load on the drainage line based on the wind force variation over time model and the finite element geometric model; and obtains the wind deviation displacement data of the drainage line based on the wind load and dynamic analysis. The present invention obtains the wind load of the drainage line based on the finite element, and obtains the wind deviation displacement data based on the wind load and dynamic analysis, which can better assist relevant personnel in quantitative analysis of wind deviation faults in substations, thereby eliminating potential hidden dangers in substations and ensuring the safe and stable operation of power grids, which is of great significance.

Brief Description of the Drawings

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

[0018] Figure 1 A flow chart of the steps of the method for calculating the displacement of drainage lines under wind force;

[0019] Figure 2 Flowchart of steps for obtaining a model of wind force variation over time;

[0020] Figure 3 is a schematic diagram of the finite element model;

[0021] Figure 4 is a schematic diagram of wind load distribution;

[0022] Figure 5 Flow chart of steps for obtaining wind loads;

[0023] Figure 6 It is a schematic diagram of the displacement distribution of the drainage line changing with time;

[0024] Figure 7 It is a structural schematic diagram of the drainage line displacement calculation system under wind force;

[0025] Figure 8 A diagram of the internal structure of a computer device;

[0026] Among them, 401 is a wind model building module; 402 is a finite element geometric model building module; 403 is a wind load acquisition module; 404 is a displacement acquisition module. [Specific implementation method]

[0027] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0028] The terms "first", "second", etc. in the specification, claims and drawings of this application are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or modules is not limited to the listed steps or modules, but optionally includes steps or modules that are not listed, or optionally includes other steps or modules that are inherent to these processes, methods, products or devices.

[0029] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0030] See also Figure 1 , is a flowchart of a method for calculating the displacement of drainage lines under wind force in the first embodiment of the present application, the method comprising:

[0031] Step 101, constructing a wind force variation model of the substation over time according to the meteorological data of the substation;

[0032] Step 102, establishing a finite element geometric model of the substation's drainage line;

[0033] Step 103, obtaining the wind load on the drainage line according to the wind force time-varying model and the finite element geometric model;

[0034] Step 104: Obtain windage displacement data of the flow line according to the wind load and dynamics analysis.

[0035] Specifically, meteorological data is obtained, and a wind force variation model of the substation is constructed based on the meteorological data; detailed dimensional parameters of the substation drainage line interval, drainage line model, density of the drainage line, Young's modulus and other parameters are obtained, and a finite element geometric model of the drainage line is constructed based on the obtained parameters; the wind load on the drainage line is obtained based on the wind force variation model and the finite element geometric model; the wind load on the substation drainage line is used as the initial condition for dynamic analysis, and the wind deviation displacement distribution corresponding to the substation drainage line, that is, the wind deviation displacement data of the drainage line, is calculated.

[0036] The method in this embodiment obtains the wind load on the drainage line based on the wind force variation over time model and the finite element geometric model; and obtains the wind deviation displacement data of the drainage line based on the wind load and dynamic analysis. The present invention obtains the wind load of the drainage line based on the finite element method, and obtains the wind deviation displacement data based on the wind load and dynamic analysis, which can better assist relevant personnel in quantitative analysis of wind deviation faults in substations, thereby eliminating potential hidden dangers in substations and ensuring the safe and stable operation of power grids, which is of great significance.

[0037] In the specific embodiments, see Figure 2 The step of constructing a wind force variation model of a substation over time according to the meteorological data of the substation includes:

[0038] Step 201, determining the distribution range of wind direction and the wind force value set;

[0039] Step 202: determining the maximum wind force according to the meteorological data, the distribution range and the wind force value set;

[0040] Step 203: determine a function curve of wind force changing with time according to the maximum wind force value, the distribution range, the wind force value set and the meteorological data; the function curve of wind force changing with time is the wind force changing with time model.

[0041] Specifically, the maximum wind speed can be used to deal with extreme weather, such as typhoons and tornadoes. By combining the maximum wind speed to determine the function curve, the offset position of the drainage line in extreme weather can be predicted; the frequency and duration of different wind speed levels can also be counted to understand the overall distribution of wind speed. According to the characteristics and changing laws of wind data, select a suitable function model to describe the change of wind speed over time. Common function models include polynomial functions, exponential functions, logarithmic functions, etc. You can also consider using non-parametric methods, such as time series analysis or machine learning algorithms to fit wind data.

[0042] In a specific embodiment, the establishment of a finite element geometric model of the drainage line of the substation includes: using a drone to perform three-dimensional laser scanning on the drainage line intervals to obtain a three-dimensional spatial data set of the drainage line; fitting the three-dimensional spatial data set by function fitting to obtain a spatial function curve expression of the drainage line; and obtaining a finite element geometric model of the drainage line based on the spatial function curve expression and the diameter of the drainage line.

[0043] Specifically, a UAV is used to perform three-dimensional laser scanning on the interval of the drainage line of the substation to be analyzed, and a three-dimensional spatial data set of the drainage line of the substation is obtained; based on the three-dimensional spatial data set, a spatial function curve expression of the drainage line is obtained by function fitting; a corresponding finite element geometric model is established according to the spatial function curve expression and the diameter of the drainage line, wherein the schematic diagram of the finite element model can be referred to Figure 3 .

[0044] In a specific embodiment, obtaining the wind load on the drainage line based on the wind force time-varying model and the finite element geometric model includes: setting boundary conditions of fluid and dynamic analysis of the wind force time-varying model; obtaining the wind load on the drainage line based on the boundary conditions of the fluid and dynamic analysis and the finite element geometric model.

[0045] Specifically, use FLUENT, CFX, etc. for calculations. These software provide a wealth of fluid dynamics analysis functions; import geometric models and meshes; set fluid properties, boundary conditions, and external forces; select appropriate solvers and algorithms. Run the analysis software to perform fluid dynamics calculations; after the analysis is completed, extract the required physical quantities, such as pressure distribution, from the results; calculate the wind load based on the pressure distribution and the surface area of ​​the geometric model; consider the influence of wind direction and wind speed, and correct the wind load. The effects of wind direction and wind speed on wind loads are superimposed on each other. When making corrections, it is necessary to consider the combined effects of these two factors. The wind load on the drainage line may change over time, so dynamic analysis is required; use finite element analysis software or dynamic simulation tools to simulate the response of the drainage line under wind loads, and make corrections accordingly. Specifically, please refer to the schematic diagram of wind load distribution. Figure 4 .

[0046] In the specific embodiments, see Figure 5 , the wind load on the drainage line is obtained according to the boundary conditions of the fluid and dynamics analysis and the finite element geometric model, including:

[0047] Step 301, adding and setting the fluid analysis physical field of the wind force time-varying model, and setting the fluid domain inlet, outlet and open boundary of the wind force time-varying model; the fluid domain inlet, outlet and open boundary constitute the boundary conditions of the dynamic analysis;

[0048] Step 302, adding and setting the fluid-solid coupling multi-physics field of the wind force time-varying model;

[0049] Step 303: Obtain the wind load on the drainage line according to the fluid analysis physical field, the fluid domain inlet, outlet and open boundary, the fluid-solid coupling multi-physical field and the finite element geometric model.

[0050] Specifically, the combination of fluid analysis physics field and fluid-solid coupling multi-physics field can comprehensively reflect the force process of the drainage line under the action of wind force and improve the accuracy of wind load.

[0051] In a specific embodiment, the wind load on the drainage line is obtained according to the fluid analysis physical field, the fluid domain inlet, outlet and open boundary, the fluid-solid coupling multi-physical field and the finite element geometric model, including: according to the scale distribution of the finite element geometric model, appropriate grid division is performed to generate a corresponding node topology, and a calculation equation matrix is ​​obtained according to the node topology; for the fluid analysis problem of fluid-solid phase coupling, a separate iterative solver is selected, the termination condition, maximum number of iterations, time step type and PID control parameters of the solver are set, and the wind load is obtained by calculation in combination with the fluid analysis physical field, the fluid domain inlet, outlet and open boundary, and the fluid-solid coupling multi-physical field.

[0052] Specifically, set the material parameters and excitation parameters of the drainage line, add the corresponding fluid analysis physical field, and set the corresponding fluid domain inlet, outlet and open boundary; add and set the corresponding fluid-solid coupling multi-physics field; according to the scale distribution of the geometric model, perform appropriate meshing, generate the corresponding node topology, and obtain the calculation equation matrix. For the fluid analysis problem of fluid-solid phase coupling, select the segregated iterative solver, set the solver's termination conditions, maximum number of iterations, time step type and PID control parameters, and perform calculations to obtain the wind load distribution on the drainage line.

[0053] In a specific embodiment, the windage displacement data of the drainage line is obtained according to the wind load and dynamic analysis, including: setting the material model of the drainage line and the constraints and gravity at both ends of the drainage line; using the wind load as the load for dynamic analysis, selecting a direct transient solver for the dynamic analysis problem of the solid, and setting the termination condition, algorithm type, time span and corresponding step size of the solver, and calculating in combination with the dynamic analysis to obtain a cloud map of the displacement distribution of the drainage line changing with time; and obtaining the windage displacement data of the drainage line based on the cloud map of the displacement distribution changing with time.

[0054] Specifically, by adding the corresponding dynamic analysis physical field, setting the corresponding material model, constraints and gravity at both ends of the drainage line, extracting the wind load distribution data set on the drainage line, and using it as the load for dynamic analysis; for the dynamic analysis problem of solid, select the direct transient solver, and set the termination condition, algorithm type, time span and corresponding step size of the solver to obtain the cloud map of the displacement distribution on the drainage line changing with time. For details, the schematic diagram of the cloud map can be found in Figure 6. The present application takes into account the characteristics of wind force changing over time, and by decoupling fluid analysis and dynamic analysis from each other, the computational efficiency is greatly improved on the basis of ensuring accuracy. Through decoupling, fluid analysis and dynamic analysis can be performed separately, thereby reducing the mutual influence and interference between the two, which helps to more accurately simulate the wind deviation of the drainage line and improve the accuracy of the simulation. After decoupling, the fluid analysis and dynamic analysis can be optimized separately. For example, the flow characteristics in the fluid analysis can be finely simulated, and the structural response in the dynamic analysis can be accurately calculated. This independent optimization helps to improve the accuracy of the simulation results. After decoupling, the models of fluid analysis and dynamic analysis can be simplified as needed. For example, only the fluid factors that have a greater impact on the wind deviation of the drainage line can be considered, while the minor factors can be ignored, which helps to reduce the computational complexity and improve the simulation efficiency. After decoupling, the fluid analysis and dynamic analysis can be calculated in parallel separately, which can make full use of computer resources, shorten the simulation time, and improve the simulation efficiency. During the simulation process, if there is a problem or anomaly, the problem can be more easily located by decoupling. For example, if the simulation results of the windage deviation of the drainage line are inaccurate, the results of the fluid analysis and the dynamic analysis can be checked separately to determine the problem. Once the problem is located, a more targeted solution can be formulated. For example, if it is a problem in the fluid analysis, the fluid model or parameters can be optimized; if it is a problem in the dynamic analysis, the structural model or boundary conditions can be adjusted. By decoupling, the results of the fluid analysis and the dynamic analysis can be verified and checked separately, which helps to ensure the accuracy and reliability of the simulation results. After decoupling, the results of the fluid analysis and the dynamic analysis can be compared and analyzed, which helps to have a deeper understanding of the mechanism and characteristics of the windage deviation of the drainage line and provide stronger support for practical engineering applications. Therefore, the mutual decoupling of fluid analysis and dynamic analysis has many benefits in simulating the windage deviation of the drainage line. These benefits include improving simulation accuracy, reducing computational complexity, facilitating problem location and resolution, and enhancing the reliability of simulation results.

[0055] In the specific embodiments, see Figure 7, which is a structural schematic diagram of a drainage line displacement calculation system under wind action provided by the second embodiment of the present application, characterized in that the system includes a wind model construction module 401, a finite element geometric model construction module 402, a wind load acquisition module 403 and a displacement acquisition module 404; the wind model construction module 401 is used to construct a wind force time-varying model of the substation according to the meteorological data of the substation; the finite element geometric model construction module 402 is used to establish a finite element geometric model of the drainage line of the substation; the wind load acquisition module 403 is used to obtain the wind load on the drainage line according to the wind force time-varying model and the finite element geometric model; the displacement acquisition module 404 is used to obtain the wind deviation displacement data of the drainage line according to the wind load and dynamic analysis.

[0056] The system in this embodiment obtains the wind load on the drainage line based on the wind force time-varying model and the finite element geometric model; and obtains the wind deviation displacement data of the drainage line based on the wind load and dynamic analysis. The present invention obtains the wind load of the drainage line based on the finite element, and obtains the wind deviation displacement data based on the wind load and dynamic analysis, which can better assist relevant personnel in quantitatively analyzing the wind deviation fault of the substation, thereby eliminating potential hidden dangers in the substation and ensuring the safe and stable operation of the power grid, which is of great significance.

[0057] In a specific embodiment, the third embodiment of the present application provides a drainage line displacement calculation device under the action of wind, including a memory and a processor, the memory storing a computer program, and when the computer program is executed by the processor, the processor executes the steps of the method as described in any one of the first embodiments of the present application. The device in this embodiment obtains the wind load on the drainage line according to the wind force time-varying model and the finite element geometric model; and obtains the wind deviation displacement data of the drainage line according to the wind load and dynamic analysis. The present invention obtains the wind load of the drainage line based on the finite element, and obtains the wind deviation displacement data based on the wind load and dynamic analysis, which can better assist relevant personnel in conducting quantitative analysis of wind deviation faults in substations, thereby eliminating potential hidden dangers in substations and ensuring the safe and stable operation of power grids, which is of great significance.

[0058] In a specific embodiment, the fourth embodiment of the present application provides a computer-readable storage medium storing a computer program, and when the computer program is executed by a processor, the processor executes the steps of the method described in any one of the first embodiments of the present application. The storage medium in this embodiment obtains the wind load on the drainage line according to the wind force time-varying model and the finite element geometric model; and obtains the wind deviation displacement data of the drainage line according to the wind load and dynamic analysis. The present invention obtains the wind load of the drainage line based on the finite element, and obtains the wind deviation displacement data based on the wind load and dynamic analysis, which can better assist relevant personnel in conducting quantitative analysis of wind deviation faults in substations, thereby eliminating potential hidden dangers in substations and ensuring the safe and stable operation of power grids, which is of great significance.

[0059] Figure 8 The internal structure of a computer device in one embodiment is shown. The computer device can be a terminal or a server. Figure 8 The computer device includes a processor, a memory, etc. connected via a system bus. The memory includes a non-volatile storage medium and an internal memory. The non-volatile storage medium of the computer device stores an operating system and may also store a computer program. When the computer program is executed by the processor, the processor can implement the method in this embodiment. The internal memory may also store a computer program. When the computer program is executed by the processor, the processor can implement the method in this embodiment. Those skilled in the art can understand that Figure 8 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0060] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

[0061] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A method for calculating the displacement of drainage lines under wind force, characterized in that: The method comprises: Construct a wind force variation model of the substation over time based on the meteorological data of the substation; Establish the finite element geometric model of the substation's drainage line; Obtaining the wind load on the drainage line according to the wind force time-varying model and the finite element geometric model; The windage displacement data of the flow line is obtained according to the wind load and dynamic analysis.

2. The method for calculating the displacement of drainage lines under wind force according to claim 1, characterized in that: The step of constructing a wind force variation model of a substation over time according to the meteorological data of the substation includes: Determine the distribution range of wind direction and the set of wind force values; Determine the maximum wind force according to the meteorological data, the distribution range and the wind force value set; A function curve of wind force changing with time is determined according to the maximum wind force value, the distribution range, the wind force value set and the meteorological data; the function curve of wind force changing with time is the wind force changing with time model.

3. The method for calculating the displacement of drainage lines under wind force according to claim 1, characterized in that: The method of establishing a finite element geometric model of the flow line of the substation includes: Using a drone to perform three-dimensional laser scanning on the drainage line intervals to obtain a three-dimensional spatial data set of the drainage lines; Fitting the three-dimensional spatial data set by means of function fitting to obtain a spatial function curve expression of the drainage line; A finite element geometric model of the drainage line is obtained according to the spatial function curve expression and the diameter of the drainage line.

4. The method for calculating the displacement of drainage lines under wind force according to claim 1, characterized in that: The step of obtaining the wind load on the drainage line according to the wind force time-varying model and the finite element geometric model includes: Setting boundary conditions for fluid and dynamic analysis of the wind force time-varying model; The wind load on the drainage line is obtained according to the boundary conditions of the fluid and dynamics analysis and the finite element geometric model.

5. The method for calculating the displacement of drainage lines under wind force according to claim 4, characterized in that: The step of obtaining the wind load on the drainage line according to the boundary conditions of the fluid and dynamics analysis and the finite element geometric model comprises: Add and set the fluid analysis physical field of the wind force time-varying model, and set the fluid domain inlet, outlet and open boundary of the wind force time-varying model; the fluid domain inlet, outlet and open boundary constitute the boundary conditions of the dynamic analysis; Adding and setting the fluid-solid coupling multi-physics field of the wind force time-varying model; The wind load on the drainage line is obtained according to the fluid analysis physical field, the fluid domain inlet, outlet and open boundary, the fluid-solid coupling multi-physical field and the finite element geometric model.

6. The method for calculating the displacement of drainage lines under wind force according to claim 5, characterized in that: The step of obtaining the wind load on the drainage line according to the fluid analysis physical field, the fluid domain inlet, outlet and open boundary, the fluid-solid coupling multi-physical field and the finite element geometric model includes: According to the scale distribution of the finite element geometric model, appropriate mesh division is performed to generate corresponding node topology, and a calculation equation matrix is ​​obtained according to the node topology; For the fluid analysis problem of fluid-solid coupling, a separable iterative solver is selected, and the termination condition, maximum number of iterations, time step type and PID control parameters of the solver are set. The wind load is calculated in combination with the fluid analysis physical field, the fluid domain inlet, outlet and open boundary, and the fluid-solid coupling multi-physical field.

7. The method for calculating the displacement of drainage lines under wind force according to claim 1, characterized in that: The step of obtaining the windage displacement data of the drainage line according to the wind load and dynamic analysis includes: Setting the material model of the drainage line and the constraints and gravity at both ends of the drainage line; The wind load is used as the load for dynamic analysis. For the dynamic analysis problem of solid, a direct transient solver is selected, and the termination condition, algorithm type, time span and corresponding step size of the solver are set. The displacement distribution of the drainage line is calculated and obtained over time in combination with the dynamic analysis. The windage displacement data of the drainage line is obtained based on the displacement distribution cloud map changing with time.

8. A drainage line displacement calculation system under wind force, characterized in that: The system comprises: a wind model building module, a finite element geometric model building module, a wind load acquisition module and a displacement acquisition module; The wind model building module is used to build a wind force time-varying model of the substation according to the meteorological data of the substation; The finite element geometric model building module is used to establish a finite element geometric model of the flow line of the substation; The wind load acquisition module is used to obtain the wind load on the drainage line according to the wind force time-varying model and the finite element geometric model; The displacement acquisition module is used to obtain the windage displacement data of the drainage line according to the wind load and dynamic analysis.

9. A device for calculating the displacement of drainage lines under wind force, comprising a memory and a processor, characterized in that: The memory stores a computer program, and when the computer program is executed by the processor, the processor is caused to perform the steps of the method according to any one of claims 1 to 7.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the processor is caused to perform the steps of the method according to any one of claims 1 to 7.

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