Transmission line transverse wind prediction method and system based on three-dimensional wind field

Abstract

The invention discloses a power transmission line transverse wind prediction method and system based on a three-dimensional wind field, and belongs to the technical field of power transmission line safety, and the method comprises the steps: obtaining the basic information of a power transmission line, and obtaining the corresponding numerical weather prediction data; based on the basic information of the power transmission line and the constructed three-dimensional wind field component interpolation calculation model, calculating three-dimensional wind components predicted at the height of the power transmission line; establishing a coordinate system in which the power transmission line is coordinated with the numerical weather forecast three-dimensional wind field based on the numerical weather forecast data; calculating a power transmission line section trend angle between adjacent towers according to the latitude and longitude of the adjacent towers extracted from the basic information of the power transmission line; constructing a transverse wind prediction model for the power transmission line section; and in the transverse wind prediction model oriented to the power transmission line section, transverse wind prediction of forecasting moment by forecasting moment and pole by pole iteration is carried out oriented to the power transmission line. The method improves the prediction precision of the transverse wind, and effectively improves the operation efficiency and safety of a power grid.

Description

Technical Field

[0001] The present invention belongs to the technical field of power transmission line safety, and in particular relates to a method and system for predicting lateral wind of a power transmission line based on a three-dimensional wind field. Background Art

[0002] The lateral wind facing the transmission line section (i.e. the wind perpendicular to the direction of the transmission line section, also known as side wind or cross wind) has the most important impact on the calculation of wind loads on overhead transmission lines. The lateral wind speed not only directly affects the calculation of wind loads on transmission lines, affecting the vibration and stability of transmission lines, but may also cause the tilt and fracture of towers and damage to key equipment such as insulators, thereby causing power transmission interruptions and system failures, thereby affecting the reliable supply of electricity and the overall safe operation of the power grid.

[0003] When weather events with strong vertical motion, such as tornadoes and severe convection, occur, the failures such as line disconnection and tower collapse caused by the vertical rise or fall of the three-dimensional wind field are more serious. The main reasons are: First, the vertical wind speed may cause dynamic changes in the wind load in the vertical direction, causing the transmission line structure to bear additional stress and fatigue. Second, the severe vertical wind speed may cause changes and disturbances in the local wind field structure, affecting the distribution and direction of the horizontal wind speed, which may cause the transmission line to be subjected to uneven wind loads at different locations, increasing the risk of the transmission line structure. However, the current lateral wind forecast for transmission line sections does not consider the influence of vertical speed, which seriously restricts the accuracy of lateral wind forecast. Therefore, it is urgent to comprehensively consider the influence of horizontal wind speed components and vertical wind speed components in meteorological scenes with significant vertical motion, so as to obtain accurate predictions of lateral wind for transmission lines, that is, it is necessary to carry out lateral wind forecasts for transmission lines based on three-dimensional wind fields, so as to effectively improve the forecast accuracy and support the safe and stable operation of the power grid. Summary of the invention

[0004] In order to solve the problems existing in the prior art, the present invention proposes a method and system for predicting lateral wind for transmission lines based on a three-dimensional wind field. The method improves the prediction accuracy of lateral wind, which not only helps to reduce structural damage and failures of transmission lines, but also effectively improves the operating efficiency and safety of the power grid.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: In a first aspect, the present invention provides a method for predicting lateral wind of a transmission line based on a three-dimensional wind field, comprising: Obtain basic information of transmission lines and corresponding numerical weather forecast data; Based on the basic information of the transmission line and the constructed interpolation calculation model of the three-dimensional wind field components, the three-dimensional wind components predicted at the height of the transmission line are calculated respectively; Based on numerical weather forecast data, a coordinate system is established for the transmission line and the three-dimensional wind field of numerical weather forecast; In a coordinate system coordinated with the transmission line and the three-dimensional wind field of numerical weather forecast, the horizontal and vertical wind directions at the height of the transmission line are calculated according to the numerical weather forecast data; the direction angle of the transmission line section between adjacent towers is calculated according to the longitude and latitude of adjacent towers extracted from the basic information of the transmission line; Based on the three-dimensional wind components predicted at the height of the transmission line, the horizontal composite wind speed at the corresponding height is obtained; based on the horizontal composite wind speed, the angle between the direction of the transmission line section and the horizontal wind direction is calculated; based on the horizontal composite wind speed, the angle between the direction of the transmission line section and the horizontal wind direction, a lateral wind prediction model facing the transmission line section is constructed; Based on the lateral wind prediction model for transmission line sections, lateral wind prediction is carried out for transmission lines at each forecast moment and each tower iteratively.

[0006] In a second aspect, the present invention provides a transmission line lateral wind prediction system based on a three-dimensional wind field, comprising: The acquisition module is used to obtain basic information of the transmission line and obtain the corresponding numerical weather forecast data; A model building module, used to calculate the three-dimensional wind components predicted at the height of the transmission line based on the basic information of the transmission line and the constructed interpolation calculation model of the three-dimensional wind field components; Based on numerical weather forecast data, a coordinate system is established for the transmission line and the three-dimensional wind field of numerical weather forecast; In a coordinate system coordinated with the transmission line and the three-dimensional wind field of numerical weather forecast, the horizontal and vertical wind directions at the height of the transmission line are calculated according to the numerical weather forecast data; the direction angle of the transmission line section between adjacent towers is calculated according to the longitude and latitude of adjacent towers extracted from the basic information of the transmission line; Based on the three-dimensional wind components predicted at the height of the transmission line, the horizontal composite wind speed at the corresponding height is obtained; based on the horizontal composite wind speed, the angle between the direction of the transmission line section and the horizontal wind direction is calculated; based on the horizontal composite wind speed and the angle between the direction of the transmission line and the wind direction, a lateral wind prediction model facing the transmission line section is constructed; The prediction module is used to carry out iterative lateral wind prediction for the transmission line at each forecast moment and each tower based on the lateral wind prediction model for the transmission line section.

[0007] As a further improvement of the present invention, in the acquisition module, acquiring basic information of the power transmission line includes: Obtain the basic information of the transmission line towers under study, including the longitude of the transmission line towers at each level ,latitude , and the height of the transmission line segment .

[0008] As a further improvement of the present invention, in the acquisition module, obtaining corresponding numerical weather forecast data includes: Extract three-dimensional numerical weather forecast data of the grid corresponding to the transmission line section; Based on the gridded numerical weather forecast covering the transmission lines and according to the basic information of the transmission line towers, a matching relationship between each transmission line section and the numerical weather forecast grid is established, and the three-dimensional data of the corresponding grid points are extracted from the numerical weather forecast results.

[0009] As a further improvement of the present invention, in the model building module, the interpolation calculation model based on the basic information of the transmission line and the constructed three-dimensional wind field components respectively calculates the three-dimensional wind components predicted at the height of the transmission line, including: Construct an interpolation calculation model for three-dimensional wind field components:

[0010] in, Indicates the height of the transmission line Three-dimensional wind components at , including meridional wind, zonal wind or vertical velocity; and Two known heights and The wind force at Based on the different heights of each transmission line section, the three-dimensional wind components at the height of the transmission line are calculated according to the interpolation calculation model: meridional wind, zonal wind and vertical speed:

[0011] in, , and Transmission line height meridional wind, zonal wind and vertical speed at ; and Two known heights and The meridian wind, and The two known heights are and The zonal wind at and The two known heights are and The vertical speed at .

[0012] As a further improvement of the present invention, in the model building module, a coordinate system coordinated with the transmission line and the numerical weather forecast three-dimensional wind field is established based on the numerical weather forecast data, including: Establishing the coordinate system of three-dimensional wind components for numerical weather forecasting: Meridional wind and zonal wind Orthogonal, meridian wind is the wind component along the longitude of the Earth, the zonal wind is the wind component along the earth's latitude; the vertical velocity is the wind component perpendicular to the meridional and zonal winds; Based on the coordinate system of the three-dimensional wind component of numerical weather forecast, the longitude and latitude information of the transmission line tower is placed on the three-dimensional wind component coordinate system, and the longitude and latitude are confirmed. Changes on the horizontal axis of the coordinate system, latitude Change on the vertical axis of the coordinate system to establish a coordinate system for the coordination of the transmission line and the numerical weather forecast wind field.

[0013] As a further improvement of the present invention, in the model building module, the corresponding three-dimensional wind direction angle is calculated according to the meridional wind, zonal wind and vertical speed predicted at the height of the transmission line, including: Based on the height of the transmission line Meridional wind , Zonal wind and vertical speed , calculate the horizontal wind direction corresponding to the height of the transmission line and vertical wind direction , specifically:

[0014] in, is the inverse tangent function.

[0015] As a further improvement of the present invention, in the model building module, the transmission line segment direction angle between adjacent towers is calculated according to the longitude and latitude of adjacent towers extracted from the basic information of the transmission line, including: Any transmission line segment By the tower and Composition, tower The longitude and latitude coordinates of Tower The longitude and latitude coordinates of , based on the three-dimensional wind component coordinate system, the direction of each transmission line segment is calculated. Trend for:

[0016] in, is the inverse tangent function, represents the change in longitude of the transmission line segment, is the dimensional change of the transmission line section, which is calculated from the longitude and latitude coordinates of the towers at both ends of the transmission line section.

[0017] As a further improvement of the present invention, in the model building module, after calculating the transmission line segment direction angle between adjacent towers, the following further comprises: Convert the horizontal wind direction angle and the transmission line section strike angle to the interval [0,360]; introduce the four-quadrant inverse tangent function Calculate the angle:

[0018] in, Considering the changes in the four quadrants, the value range of the four-quadrant inverse tangent function becomes By adjusting the range and the conversion between radians and angles, the angle can be between The interval is:

[0019] in, The result is in radians, multiplied by It is converted to an angle.

[0020] As a further improvement of the present invention, in the model building module, based on the three-dimensional wind component predicted at the height of the transmission line, the horizontal synthetic wind speed at the corresponding height is obtained, including: The height of the transmission line Meridional wind and zonal wind , calculate the magnitude of the horizontal composite wind speed based on orthogonality: .

[0021] As a further improvement of the present invention, in the model building module, the angle between the direction of the transmission line section and the horizontal wind direction is obtained based on the calculation of the horizontal synthetic wind speed, including: From horizontal wind direction and transmission line section strike angle , and the values ​​are adjusted In the same coordinate system, the angle α between the two is calculated as:

[0022] Adjust the angle between the two Within the range, specifically: .

[0023] As a further improvement of the present invention, in the model building module, a lateral wind prediction model facing the transmission line section is built based on the horizontal synthetic wind speed and the angle between the transmission line direction and the wind direction, including: The horizontal component of the lateral wind on the transmission line section is calculated based on the horizontal composite wind speed, the direction of the transmission line section and the angle between the horizontal wind direction. Size:

[0024] Based on the vertical speed at the height of the transmission line and vertical wind direction , calculate the horizontal component of the lateral wind on the transmission line section Size:

[0025] Then the lateral wind speed facing the transmission line considering the three-dimensional wind component is obtained: Computational model: .

[0026] As a further improvement of the present invention, in the prediction module, based on the lateral wind prediction model for the transmission line section, lateral wind prediction for the transmission line is carried out at each forecast moment and each tower iteration, including: Based on the lateral wind prediction model for transmission line sections, a double-loop iteration in time and space is carried out for each integral time step of the numerical weather forecast and each transmission line section of the transmission line, and the lateral wind results are calculated for each integral time step and each tower iteration; Based on the lateral wind results of each integral time step and each tower iteration, the size is judged against the wind protection parameters of the transmission line design. When the lateral wind is greater than the design parameters, a high wind warning is issued for the transmission line section and the integral time step.

[0027] In a third aspect, the present invention provides an electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the method for predicting lateral wind of a transmission line based on a three-dimensional wind field when executing the computer program.

[0028] In a fourth aspect, the present invention provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method for predicting lateral wind of a transmission line based on a three-dimensional wind field is implemented.

[0029] In a fifth aspect, the present invention provides a computer program product, wherein the computer program product comprises computer instructions, wherein the computer instructions instruct a computer to execute the method for predicting lateral wind of a transmission line based on a three-dimensional wind field.

[0030] The beneficial effects of the present invention compared with the prior art are as follows: The present invention proposes to calculate the meridional wind, zonal wind and vertical wind speed at the height of the transmission line based on the three-dimensional wind field data of the numerical weather forecast respectively; and to establish a coordinate system coordinated with the transmission line and the three-dimensional wind field based on the wind component, so as to carry out accurate analysis of the predicted wind direction and the direction of the transmission line section, and finally establish a lateral wind prediction model based on the three-dimensional wind field, and iterate the calculation at each integral time step, and issue a refined warning for the transmission line section and time when the predicted lateral wind is greater than the design parameters of the transmission line. The present invention takes into account the three-dimensional wind field and improves the prediction accuracy of the lateral wind, which not only helps to reduce the structural damage and failures of the transmission line, but also effectively improves the efficiency and safety of power grid operation. The invention aims to achieve accurate prediction of lateral wind in scenarios with significant vertical movement, and provide solid technical support and guarantee for the safe operation of transmission lines and equipment protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the embodiments of the present invention or the drawings of related technical solutions in the prior art are introduced below. It should be understood that the drawings introduced below are only for the convenience of clearly describing some embodiments of the technical solutions of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0032] Figure 1 The roadmap of the method for predicting lateral wind of transmission lines based on three-dimensional wind field of the present invention is Figure 2 Schematic diagram of the coordinate system for three-dimensional wind components based on numerical weather forecasts; Figure 3 Schematic diagram of the coordinate system for the coordination of transmission lines and numerical weather forecast wind farms; Figure 4 A flow chart of a method for predicting lateral wind of a transmission line based on a three-dimensional wind field provided in an embodiment of the present invention; Figure 5 A transmission line lateral wind prediction device based on a three-dimensional wind field provided by the present invention; Figure 6 A schematic diagram of an electronic device provided by the present invention. DETAILED DESCRIPTION

[0033] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and are not to be construed as limitations of the present invention. For the step numbers in the following embodiments, they are only provided for the convenience of explanation, and the order between the steps is not limited in any way, and the execution order of each step in the embodiment can be adaptively adjusted according to the understanding of those skilled in the art.

[0034] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0035] The present invention aims to solve the problem that the lateral wind of the transmission line is difficult to accurately predict in meteorological scenes with significant vertical motion, such as Figure 1 As shown, the first object of the present invention is to provide a method for predicting lateral wind of a transmission line based on a three-dimensional wind field, comprising: Step 1: Obtain basic information of the transmission line and obtain corresponding numerical weather forecast data; Step 2, based on the basic information of the transmission line and the constructed interpolation calculation model of the three-dimensional wind field components, respectively calculate the three-dimensional wind components predicted at the height of the transmission line; Step 3, establishing a coordinate system coordinated between the transmission line and the numerical weather forecast three-dimensional wind field based on the numerical weather forecast data; Step 4: in a coordinate system coordinated with the transmission line and the numerical weather forecast three-dimensional wind field, the horizontal wind direction and the vertical wind direction at the height of the transmission line are calculated according to the numerical weather forecast data; the direction angle of the transmission line section between the adjacent towers is calculated according to the longitude and latitude of the adjacent towers extracted from the basic information of the transmission line; Step 5: based on the three-dimensional wind component predicted at the height of the transmission line, obtain the horizontal composite wind speed at the corresponding height; calculate the angle between the direction of the transmission line section and the horizontal wind direction based on the horizontal composite wind speed; and construct a lateral wind prediction model facing the transmission line section based on the horizontal composite wind speed, the direction of the transmission line section and the horizontal wind direction angle; Step 6: Based on the lateral wind prediction model for the transmission line section, perform lateral wind prediction for the transmission line at each forecast moment and each tower iteration.

[0036] Furthermore, the present invention proposes a method for predicting lateral wind for transmission lines based on a three-dimensional wind field, which respectively calculates the predicted meridional wind, latitudinal wind and vertical speed at the height of the transmission line, establishes a three-dimensional coordinate system coordinated between the transmission line and the numerical weather forecast wind field, an analysis model of the horizontal wind direction, vertical wind direction and direction of the transmission line section based on the coordinated coordinate system, and a lateral wind prediction model for the transmission line section and other key steps.

[0037] Furthermore, in order to reduce the impact of nonlinear wind direction on the synthetic wind speed, it is proposed to calculate the meridional wind, zonal wind and vertical speed at the height of the transmission line separately; based on the three-dimensional wind component of the numerical weather forecast, a coordinate system coordinated between the transmission line and the three-dimensional wind field of the numerical weather forecast is established; based on the established coordinated coordinate system, an analysis model of the horizontal wind direction, vertical wind direction and the direction of the transmission line section is established; finally, a lateral wind size prediction model facing the transmission line section considering the three-dimensional wind field is established.

[0038] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] Combination Figure 2 The present invention proposes a method and system for predicting lateral wind of a transmission line based on a three-dimensional wind field, comprising the following steps: Step 1: Obtain basic information of transmission lines and conventional numerical weather forecast data. The basic information of transmission lines includes the longitude of each level of transmission line towers. ,latitude , Transmission line height Etc., and establish a matching relationship based on the longitude and latitude of the tower and the high-precision gridded numerical weather forecast data, and extract the conventional data of the numerical weather forecast at the corresponding grid points of the transmission line.

[0040] As an example, the conventional data of numerical weather forecast at the grid points corresponding to the transmission line include the meridional wind speed at the heights of 10 meters, 100 meters, and 200 meters. , Zonal wind and vertical speed .

[0041] Further, step 1 specifically includes: Step 1-1: Obtain the basic information of the transmission line towers under study, including the longitude of the transmission line towers at each level. ,latitude , and the height of the transmission line segment .

[0042] As an example, it should be noted that the longitude and latitude of the tower and the height of the transmission line section are actually an array, because a transmission line contains multiple towers, and a transmission line section is determined between two adjacent towers. However, in order to simplify the description of the prediction model and facilitate understanding, they are simply recorded as a variable in the present invention, and must be expanded into an array structure in actual application.

[0043] Step 1-2: Extract the three-dimensional numerical weather forecast data of the grid corresponding to the transmission line segment. Based on the gridded numerical weather forecast covering the transmission line, according to the longitude and latitude information of the transmission line tower in step 1-1, establish a matching relationship between each transmission line segment and the numerical weather forecast grid, and extract the three-dimensional data of the corresponding grid points from the numerical weather forecast results.

[0044] As an example, the numerical weather forecast model includes the meridional wind, zonal wind and vertical speed at 10 meters, 100 meters and 200 meters above the ground in the three-dimensional wind field forecast near the ground, which are recorded as , , , , , , , and .

[0045] Furthermore, it should also be noted that the wind speed at different floor heights is actually an array, and the size of the array depends on the integral time step and forecast validity of the numerical weather forecast. These three-dimensional forecast data are included in each integral time step of the numerical weather forecast. However, for the sake of simplicity of description, they are all recorded as a variable in the present invention, and in actual application, they can be expanded into an array structure according to the results of the numerical weather forecast.

[0046] Step 2: Calculate the predicted meridional wind, zonal wind and vertical speed at the height of the transmission line. The wind speed at the height of the transmission line is currently obtained by interpolating the synthetic wind speeds of different layers. Due to the complex terrain where the transmission line is located, the wind speed may have many changes in the vertical direction, and the wind direction is a nonlinear function. The synthetic wind speed interpolation will lead to misjudgment of the wind direction.

[0047] In order to solve the above problems and maintain consistency and compatibility with numerical weather forecast data, a solution is proposed to interpolate the three-dimensional wind field components separately. This can not only effectively solve the change of wind speed with height, but also avoid the error caused by synthetic wind speed interpolation, but also ensure the accuracy of wind direction at the height of transmission lines.

[0048] Further, step 2 specifically includes: Step 2-1: Construct an interpolation calculation model for three-dimensional wind field components. Accurate prediction of lateral wind on transmission lines requires not only accurate synthetic wind speed at the height of the transmission line, but also accurate prediction of wind direction.

[0049] Furthermore, therefore, various interpolation methods based on synthetic wind speed in the past are no longer applicable. The present invention proposes a solution for respectively interpolating and calculating three-dimensional wind field components to obtain three-dimensional wind components at the height of the transmission line, thereby ensuring the accuracy of wind speed and wind direction.

[0050] The present invention uses a linear interpolation method to calculate the wind component at the height of the transmission line, as shown in formula (1): (1) in, Indicates the height of the transmission line The three-dimensional wind components at a location, namely the meridional wind, zonal wind or vertical velocity. and Two known heights and The wind quantity at the location.

[0051] Step 2-2: Calculate the three-dimensional wind components at the transmission line segment by interpolation. Based on the different heights of each transmission line segment, according to the model in step 2-1, calculate the meridional wind, zonal wind and vertical velocity at the height of the transmission line. The specific calculation is shown in formula (2): (2) in, , and Transmission line height The meridional wind, zonal wind and vertical speed at the location. and Two known heights and The meridian wind, and The two known heights are and Similarly, and The two known heights are and In the present invention, the known heights are 10 meters, 100 meters and 200 meters, and the corresponding meridional wind, zonal wind and vertical speed have been obtained in step 1-2. It is only necessary to calculate the vertical speed according to the height of the transmission line. By selecting the two closest known heights, the meridional wind, zonal wind and vertical velocity of the transmission line section can be calculated using equation (2).

[0052] Step 3: Establish a coordinate system that coordinates the transmission line with the three-dimensional wind field of the numerical weather forecast. The lateral wind forecast process for the transmission line involves the analysis of multiple angles, such as the direction of the transmission line section, the wind direction at the height of the transmission line, and the angle between the direction of the transmission line section and the wind direction at the height of the transmission line. The wind field of the numerical weather forecast is composed of the longitudinal wind , Zonal wind and vertical speed It is composed of three components, and the angle of wind direction is defined as the direction from which the wind comes, which is not in the same coordinate system as concepts such as the angle of the transmission line direction.

[0053] In order to coordinate the subsequent analysis of various angles and simplify the calculation, it is proposed to establish a coordinate system based on the three-dimensional wind field of numerical weather forecast, so that the analysis of the three-dimensional wind field and the angles related to the transmission line can be more coordinated.

[0054] Further, step 3 specifically includes: Step 3-1: Establish a coordinate system based on the three-dimensional wind component of numerical weather forecast. The three-dimensional wind component based on numerical weather forecast, i.e., the meridional wind , Zonal wind and vertical speed , establish the coordinate system for calculation coordination, as follows: Meridional wind and zonal wind Orthogonal, meridian wind is the wind component along the longitude of the Earth, the zonal wind is the wind component along the earth's latitude; the vertical velocity It is the wind component perpendicular to the meridional wind and the zonal wind, reflecting the vertical movement of the air column in the atmosphere. It is particularly important in describing convection processes, updrafts or downdrafts.

[0055] Furthermore, for the sake of coordination of calculation and convenience of understanding of application scenarios, the present invention stipulates that in the three-dimensional wind component coordinate system, the wind direction is the direction of the wind (this treatment coordinates the calculation of multiple angles involved in the lateral wind and is more consistent with the actual situation). The horizontal wind direction arrow points to the north at 0°, and moves clockwise. When the horizontal wind direction arrow points to the east, it is 90°. A positive value in the vertical direction represents an upward movement, and a negative value corresponds to a downward movement. For details, see Figure 3 As shown. Figure 3 It can be seen that: when the horizontal wind direction angle hour, ; When the horizontal wind direction angle hour, ; When the vertical wind angle hour, ; When the vertical wind angle hour, And so on.

[0056] Step 3-2: Establish a coordinate system for the transmission line and the numerical weather forecast wind field. Based on the coordinate system of the three-dimensional wind component of the numerical weather forecast established in step 3-1, the longitude and latitude information of the transmission line tower is placed on the three-dimensional wind component coordinate system, and the longitude and latitude are specified. Changes on the horizontal axis of the coordinate system, latitude Changes on the vertical axis of the coordinate system.

[0057] Furthermore, when the longitude and latitude changes of adjacent towers of a transmission line are used to represent the direction of a transmission line section, the values ​​of the longitude and latitude changes of the transmission line section and the conventions of the related angles are consistent with those in step 3-1. Figure 4 As shown, from Figure 4 It can be found that the horizontal wind direction angle and transmission line section strike angle They are mutually alternate interior angles. It can be seen that the coordinate system proposed in the present invention can well coordinate the wind direction and the direction of the transmission line section, which will greatly simplify the subsequent analysis and calculation process.

[0058] Step 4: Analytical model of three-dimensional wind direction and transmission line segment orientation based on the coordinated coordinate system. Based on the coordinated coordinate system specified in step 3, the corresponding three-dimensional wind direction angle is calculated according to the data such as the meridional wind, zonal wind and vertical velocity at the height of the transmission line calculated in step 2. According to the longitude and latitude of adjacent towers extracted in step 1, the transmission line segment orientation angle between adjacent towers is calculated, and the calculated angle value is ensured to be within the interval [0,360].

[0059] Further, step 4 specifically includes: Step 4-1: Calculate the horizontal and vertical wind directions at the height of the transmission line based on the three-dimensional wind component coordinate system. Based on the height of the transmission line calculated in step 2-2 Meridional wind , Zonal wind and vertical speed ,Depend on Figure 3 It can be seen that the horizontal wind direction corresponding to the height of the transmission line is and vertical wind direction They are: (3) in, is the inverse tangent function.

[0060] Step 4-2: Calculate the direction of each transmission line segment based on the three-dimensional wind component coordinate system. Suppose any transmission line segment By the tower and Composed of towers The longitude and latitude coordinates of Tower The longitude and latitude coordinates of .Depend on Figure 4 It can be seen that the transmission line section Trend for: (4) in, is the inverse tangent function, represents the change in longitude of the transmission line segment, is the dimensional change of the transmission line section, which can be calculated from the longitude and latitude coordinates of the towers at both ends of the transmission line section.

[0061] Step 4-3: Convert the horizontal wind direction angle and the transmission line section strike angle to the [0,360] interval.

[0062] From the calculation of wind direction angle and transmission line section strike angle in steps 4-1 and 4-2, we know that their values ​​range is In practical applications, the vertical wind direction angle just meets the demand, but the horizontal wind direction angle and the transmission line section angle need to be adjusted to In between, introduce the four-quadrant inverse tangent function Calculate the angle: (5) in, Taking into account the changes in the four quadrants, the value range of the function becomes On this basis, by adjusting the value range and the conversion between radians and angles, the angle can be between The specific interval is as shown in formula (6): (6) in, The result is in radians, multiplied by It is converted to an angle.

[0063] Step 5: Establish a lateral wind prediction model for the transmission line segment. Based on the meridional wind and zonal wind at the height of the transmission line calculated in step 2, obtain the horizontal composite wind speed at that height. Based on step 4, calculate the angle between the forecast wind direction and the direction of the transmission line segment, and ensure that the calculated angle value is within the interval [0,180]. Construct a lateral wind prediction model based on the composite wind speed and the angle between the direction of the transmission line and the wind direction.

[0064] Further, step 5 specifically includes: Step 5-1: Calculation of horizontal composite wind speed at the height of the transmission line. The height of the transmission line calculated in step 2-2 Meridional wind and zonal wind , the magnitude of the horizontal composite wind speed can be calculated based on its orthogonality: (7) Step 5-2: Calculate the angle between the transmission line section and the horizontal wind direction. The horizontal wind direction angle can be obtained from step 4. and transmission line section strike angle , and their values ​​are adjusted In the same coordinate system, the angle α between the two can be directly calculated as: (8) Since the wind direction angle and the transmission line section strike angle are both calculated clockwise from the north, the angle between the two needs to be adjusted to Within the range, specifically: (9) Step 5-3: Calculation of the three-dimensional lateral wind magnitude facing the transmission line. Based on the horizontal composite wind speed magnitude and angle of the above steps 5-1 and 5-2, the horizontal component of the lateral wind received by the transmission line section can be calculated. Size: (10) Since vertical velocity mainly occurs in weather conditions with strong vertical motion, such as tornadoes and severe convection, it is necessary to consider the contribution of vertical velocity to lateral wind in such scenarios. Based on the vertical velocity at the transmission line height in step 2-2 and step 4-1, and vertical wind direction , calculate the horizontal component of the lateral wind on the transmission line section Size: (11) Thus, the lateral wind speed facing the transmission line considering the three-dimensional wind component is obtained. Computational model: (12) Step 6: Carry out lateral wind forecast for each transmission line section at each forecast time. Based on the lateral wind forecast model in step 5, forecast the lateral wind for each forecast time and tower by tower for each transmission line. Compare the predicted lateral wind with the wind protection parameters designed for the transmission line, and issue warning information when the lateral wind is greater than the design parameters for the transmission line section and time.

[0065] Further, step 6 specifically includes: Step 6-1: Double-loop iteration of lateral wind prediction in time and space. Based on the lateral wind prediction model in step 5, double-loop iteration of time and space is carried out for each integral time step of the numerical weather forecast and each transmission line section of the transmission line, and the lateral wind results are calculated for each integral time step and each tower iteration.

[0066] Step 6-2: Transmission line lateral wind forecast for tower level and minute level. Based on the lateral wind results calculated by step 6-1 for each integral time step and tower level, the wind protection parameters designed for the transmission line are judged respectively. When the lateral wind is greater than the design parameters, a refined gale warning will be issued for the transmission line section and integral time step.

[0067] It can be seen that the present invention is based on the basic information of the transmission line and the matched numerical weather forecast data. First, linear interpolation is used to respectively calculate the meridional wind, zonal wind and vertical speed predicted at the height of the transmission line, thereby avoiding the nonlinear error of calculating the wind direction by synthetic wind speed interpolation; then, based on the three-dimensional wind component at the height of the transmission line, a coordinate system coordinated with the numerical weather forecast wind field is established, and then an accurate analysis of the forecast wind direction and the direction of the transmission line section is carried out; then, based on the analysis of the angle between the horizontal wind direction, the vertical wind direction and the direction of the transmission line section, a lateral wind size prediction model for the transmission line section is established; finally, through iterative calculation of each integral time step within the numerical weather forecast time limit, the lateral wind forecast within the forecast period is obtained by comparing with the design parameters.

[0068] Furthermore, the present invention combines the basic information of transmission lines and conventional data of numerical weather forecasts, and constructs a three-dimensional lateral wind prediction model for transmission lines through the steps of linear interpolation of three-dimensional wind components in meteorology, definition of a coordinated coordinate system, and analysis of horizontal wind direction, vertical wind direction and the angle between them and the direction of the transmission line section. This solves the current technical difficulties, is more in line with actual conditions, and has higher model prediction accuracy.

[0069] like Figure 5 As shown, the second object of the present invention is to provide a transmission line lateral wind prediction system based on a three-dimensional wind field, comprising: The acquisition module is used to obtain basic information of the transmission line and obtain the corresponding numerical weather forecast data; A model building module, used to calculate the three-dimensional wind components predicted at the height of the transmission line based on the basic information of the transmission line and the constructed interpolation calculation model of the three-dimensional wind field components; Based on numerical weather forecast data, a coordinate system is established for the transmission line and the three-dimensional wind field of numerical weather forecast; In a coordinate system coordinated with the transmission line and the three-dimensional wind field of numerical weather forecast, the horizontal and vertical wind directions at the height of the transmission line are calculated according to the numerical weather forecast data; the direction angle of the transmission line section between adjacent towers is calculated according to the longitude and latitude of adjacent towers extracted from the basic information of the transmission line; Based on the three-dimensional wind components predicted at the height of the transmission line, the horizontal composite wind speed at the corresponding height is obtained; based on the horizontal composite wind speed, the angle between the direction of the transmission line section and the horizontal wind direction is calculated; based on the horizontal composite wind speed and the angle between the direction of the transmission line and the wind direction, a lateral wind prediction model facing the transmission line section is constructed; The prediction module is used to carry out iterative lateral wind prediction for the transmission line at each forecast moment and each tower based on the lateral wind prediction model for the transmission line section.

[0070] The transmission line lateral wind prediction system based on three-dimensional wind field of the present invention is based on the above-mentioned transmission line lateral wind prediction method based on three-dimensional wind field.

[0071] like Figure 6 As shown, the third object of the embodiment of the present invention is to provide an electronic device, including a memory 701, a processor 702, and a computer program stored in the memory 701 and executable on the processor, wherein the processor implements the above-mentioned transmission line lateral wind prediction method based on a three-dimensional wind field when executing the computer program. It also includes a communication interface 703 and a bus 704.

[0072] A fourth objective of an embodiment of the present invention is to provide a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the above-mentioned method for predicting lateral wind of a transmission line based on a three-dimensional wind field is implemented.

[0073] A fifth objective of an embodiment of the present invention is to provide a computer program product, wherein the computer program product comprises computer instructions, and the computer instructions instruct a computer to execute the above-mentioned method for predicting lateral wind of a transmission line based on a three-dimensional wind field.

[0074] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0075] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process in the computer or other programmable device. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0076] The present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, readable storage media, optical storage, etc.) containing computer-usable program codes.

[0077] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0078] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0079] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A method for predicting lateral wind of a transmission line based on a three-dimensional wind field, characterized in that: include: Obtain basic information of transmission lines and corresponding numerical weather forecast data; Based on the basic information of the transmission line and the constructed interpolation calculation model of the three-dimensional wind field components, the three-dimensional wind components predicted at the height of the transmission line are calculated respectively; Based on numerical weather forecast data, a coordinate system is established for the transmission line and the three-dimensional wind field of numerical weather forecast; In a coordinate system coordinated with the transmission line and the three-dimensional wind field of numerical weather forecast, the horizontal and vertical wind directions at the height of the transmission line are calculated according to the numerical weather forecast data; the direction angle of the transmission line section between adjacent towers is calculated according to the longitude and latitude of adjacent towers extracted from the basic information of the transmission line; Based on the three-dimensional wind components predicted at the height of the transmission line, the horizontal composite wind speed at the corresponding height is obtained; based on the horizontal composite wind speed, the angle between the direction of the transmission line section and the horizontal wind direction is calculated; based on the horizontal composite wind speed, the angle between the direction of the transmission line section and the horizontal wind direction, a lateral wind prediction model facing the transmission line section is constructed; Based on the lateral wind prediction model for transmission line sections, lateral wind prediction is carried out for transmission lines at each forecast moment and each tower iteratively.

2. The method for predicting lateral wind of a transmission line based on a three-dimensional wind field according to claim 1, characterized in that: The obtaining of basic information of the transmission line includes: Obtain the basic information of the transmission line towers under study, including the longitude of the transmission line towers at each level ,latitude , and the height of the transmission line segment .

3. The method for predicting lateral wind of a transmission line based on a three-dimensional wind field according to claim 1, characterized in that: The obtaining of corresponding numerical weather forecast data comprises: Extract three-dimensional numerical weather forecast data of the grid corresponding to the transmission line section; Based on the gridded numerical weather forecast covering the transmission lines and according to the basic information of the transmission line towers, a matching relationship between each transmission line section and the numerical weather forecast grid is established, and the three-dimensional data of the corresponding grid points are extracted from the numerical weather forecast results.

4. The method for predicting lateral wind of a transmission line based on a three-dimensional wind field according to claim 1, characterized in that: The three-dimensional wind components predicted at the height of the transmission line are calculated based on the basic information of the transmission line and the constructed interpolation calculation model of the three-dimensional wind field components, respectively, including: Construct an interpolation calculation model for three-dimensional wind field components: in, Indicates the height of the transmission line Three-dimensional wind components at , including meridional wind, zonal wind or vertical velocity; and Two known heights and The wind force at Based on the different heights of each transmission line section, the three-dimensional wind components at the height of the transmission line are calculated according to the interpolation calculation model: meridional wind, zonal wind and vertical speed: in, , and Transmission line height meridional wind, zonal wind and vertical speed at ; and Two known heights and The meridian wind, and The two known heights are and The zonal wind at and The two known heights are and The vertical speed at .

5. The method for predicting lateral wind of a transmission line based on a three-dimensional wind field according to claim 1, characterized in that: The method of establishing a coordinate system for the transmission line and the three-dimensional wind field of the numerical weather forecast based on the numerical weather forecast data includes: Establishing the coordinate system of three-dimensional wind components for numerical weather forecasting: Meridional wind and zonal wind Orthogonal, meridian wind is the wind component along the longitude of the Earth, the zonal wind is the wind component along the earth's latitude; the vertical velocity is the wind component perpendicular to the meridional and zonal winds; Based on the coordinate system of the three-dimensional wind component of numerical weather forecast, the longitude and latitude information of the transmission line tower is placed on the three-dimensional wind component coordinate system, and the longitude and latitude are confirmed. Changes on the horizontal axis of the coordinate system, latitude Change on the vertical axis of the coordinate system to establish a coordinate system for the transmission line and the numerical weather forecast wind field.

6. The method for predicting lateral wind of a transmission line based on a three-dimensional wind field according to claim 1, characterized in that: The method of calculating the corresponding three-dimensional wind direction angle according to the predicted meridional wind, zonal wind and vertical speed at the height of the transmission line includes: Based on the height of the transmission line Meridional wind , Zonal wind and vertical speed , calculate the horizontal wind direction corresponding to the height of the transmission line and vertical wind direction , specifically: in, is the inverse tangent function.

7. The method for predicting lateral wind of a transmission line based on a three-dimensional wind field according to claim 1, characterized in that: The step of calculating the transmission line section direction angle between adjacent towers according to the longitude and latitude of adjacent towers extracted from the basic information of the transmission line includes: Any transmission line segment By the tower and Composition, tower The longitude and latitude coordinates of Tower The longitude and latitude coordinates of , based on the three-dimensional wind component coordinate system, the direction of each transmission line segment is calculated. Trend for: in, is the inverse tangent function, represents the change in longitude of the transmission line segment, is the dimensional change of the transmission line section, which is calculated from the longitude and latitude coordinates of the towers at both ends of the transmission line section.

8. The method for predicting lateral wind of a transmission line based on a three-dimensional wind field according to claim 1, characterized in that: After calculating the transmission line section direction angle between adjacent towers, the method further includes: Convert the horizontal wind direction angle and the transmission line section strike angle to the interval [0,360]; introduce the four-quadrant inverse tangent function Calculate the angle: in, Considering the changes in the four quadrants, the value range of the four-quadrant inverse tangent function becomes By adjusting the range and the conversion between radians and angles, the angle can be between The interval is: in, The result is in radians, multiplied by It is converted to an angle.

9. The method for predicting lateral wind of a transmission line based on a three-dimensional wind field according to claim 1, characterized in that: The method of obtaining the horizontal synthetic wind speed at the corresponding height based on the three-dimensional wind component predicted at the height of the transmission line includes: The height of the transmission line Meridional wind and zonal wind , calculate the magnitude of the horizontal composite wind speed based on orthogonality: 。 10. The method for predicting lateral wind of a transmission line based on a three-dimensional wind field according to claim 1, characterized in that: The calculation based on the horizontal synthetic wind speed to obtain the angle between the transmission line section direction and the horizontal wind direction includes: From horizontal wind direction and transmission line section strike angle , and the values ​​are adjusted In the same coordinate system, the angle α between the two is calculated as: Adjust the angle between the two Within the range, specifically: 。 11. The method for predicting lateral wind of a transmission line based on a three-dimensional wind field according to claim 1, characterized in that: The method of constructing a lateral wind prediction model for a transmission line section based on the horizontal synthetic wind speed and the angle between the transmission line direction and the wind direction comprises: The horizontal component of the lateral wind on the transmission line section is calculated based on the horizontal composite wind speed, the direction of the transmission line section and the angle between the horizontal wind direction. Size: Based on the vertical speed at the height of the transmission line and vertical wind direction , calculate the horizontal component of the lateral wind on the transmission line section Size: Then the lateral wind speed facing the transmission line considering the three-dimensional wind component is obtained: Computational model: 。 12. The method for predicting lateral wind of a transmission line based on a three-dimensional wind field according to claim 1, characterized in that: The method of carrying out lateral wind prediction for the transmission line section based on the lateral wind prediction model for the transmission line section and performing iterative lateral wind prediction for each forecast moment and each tower includes: Based on the lateral wind prediction model for transmission line sections, a double-loop iteration in time and space is carried out for each integral time step of the numerical weather forecast and each transmission line section of the transmission line, and the lateral wind results are calculated for each integral time step and each tower iteration; Based on the lateral wind results of each integral time step and each tower iteration, the size is judged against the wind protection parameters of the transmission line design. When the lateral wind is greater than the design parameters, a high wind warning is issued for the transmission line section and the integral time step.

13. A transmission line lateral wind prediction system based on a three-dimensional wind field, characterized in that: include: The acquisition module is used to obtain basic information of the transmission line and obtain the corresponding numerical weather forecast data; A model building module, used to calculate the three-dimensional wind components predicted at the height of the transmission line based on the basic information of the transmission line and the constructed interpolation calculation model of the three-dimensional wind field components; Based on numerical weather forecast data, a coordinate system is established for the transmission line and the three-dimensional wind field of numerical weather forecast; In a coordinate system coordinated with the transmission line and the three-dimensional wind field of numerical weather forecast, the horizontal and vertical wind directions at the height of the transmission line are calculated according to the numerical weather forecast data; the direction angle of the transmission line section between adjacent towers is calculated according to the longitude and latitude of adjacent towers extracted from the basic information of the transmission line; Based on the three-dimensional wind components predicted at the height of the transmission line, the horizontal composite wind speed at the corresponding height is obtained; based on the horizontal composite wind speed, the angle between the direction of the transmission line section and the horizontal wind direction is calculated; based on the horizontal composite wind speed and the angle between the direction of the transmission line and the wind direction, a lateral wind prediction model facing the transmission line section is constructed; The prediction module is used to carry out iterative lateral wind prediction for the transmission line at each forecast moment and each tower based on the lateral wind prediction model for the transmission line section.

14. The transmission line lateral wind prediction system based on three-dimensional wind field according to claim 13, characterized in that: In the acquisition module, the basic information of the transmission line is acquired, including: Obtain the basic information of the transmission line towers under study, including the longitude of the transmission line towers at each level ,latitude , and the height of the transmission line segment .

15. The transmission line lateral wind prediction system based on three-dimensional wind field according to claim 13, characterized in that: In the acquisition module, the corresponding numerical weather forecast data is obtained, including: Extract three-dimensional numerical weather forecast data of the grid corresponding to the transmission line section; Based on the gridded numerical weather forecast covering the transmission lines and according to the basic information of the transmission line towers, a matching relationship between each transmission line section and the numerical weather forecast grid is established, and the three-dimensional data of the corresponding grid points are extracted from the numerical weather forecast results.

16. The transmission line lateral wind prediction system based on three-dimensional wind field according to claim 13, characterized in that: In the model building module, the interpolation calculation model based on the basic information of the transmission line and the constructed three-dimensional wind field components respectively calculates the three-dimensional wind components predicted at the height of the transmission line, including: Construct an interpolation calculation model for three-dimensional wind field components: in, Indicates the height of the transmission line Three-dimensional wind components at , including meridional wind, zonal wind or vertical velocity; and Two known heights and The wind force at Based on the different heights of each transmission line section, the three-dimensional wind components at the height of the transmission line are calculated according to the interpolation calculation model: meridional wind, zonal wind and vertical speed: in, , and Transmission line height meridional wind, zonal wind and vertical speed at ; and Two known heights and The meridian wind, and The two known heights are and The zonal wind at and The two known heights are and The vertical speed at .

17. The transmission line lateral wind prediction system based on three-dimensional wind field according to claim 13, characterized in that: In the model building module, a coordinate system coordinated with the transmission line and the numerical weather forecast three-dimensional wind field is established based on the numerical weather forecast data, including: Establishing the coordinate system of three-dimensional wind components for numerical weather forecasting: Meridional wind and zonal wind Orthogonal, meridian wind is the wind component along the longitude of the Earth, the zonal wind is the wind component along the earth's latitude; the vertical velocity is the wind component perpendicular to the meridional and zonal winds; Based on the coordinate system of the three-dimensional wind component of numerical weather forecast, the longitude and latitude information of the transmission line tower is placed on the three-dimensional wind component coordinate system, and the longitude and latitude are confirmed. Changes on the horizontal axis of the coordinate system, latitude Change on the vertical axis of the coordinate system to establish a coordinate system for the transmission line and the numerical weather forecast wind field.

18. The transmission line lateral wind prediction system based on three-dimensional wind field according to claim 13, characterized in that: In the model building module, the corresponding three-dimensional wind direction angle is calculated according to the meridional wind, zonal wind and vertical speed predicted at the height of the transmission line, including: Based on the height of the transmission line Meridional wind , Zonal wind and vertical speed , calculate the horizontal wind direction corresponding to the height of the transmission line and vertical wind direction , specifically: in, is the inverse tangent function.

19. The transmission line lateral wind prediction system based on three-dimensional wind field according to claim 13, characterized in that: In the model building module, the transmission line segment direction angle between adjacent towers is calculated based on the longitude and latitude of adjacent towers extracted from the basic information of the transmission line, including: Any transmission line segment By the tower and Composition, tower The longitude and latitude coordinates of Tower The longitude and latitude coordinates of , based on the three-dimensional wind component coordinate system, the direction of each transmission line segment is calculated. Trend for: in, is the inverse tangent function, represents the change in longitude of the transmission line segment, is the dimensional change of the transmission line section, which is calculated from the longitude and latitude coordinates of the towers at both ends of the transmission line section.

20. The transmission line lateral wind prediction system based on three-dimensional wind field according to claim 13, characterized in that: In the model building module, after calculating the transmission line segment direction angle between adjacent towers, the following steps are also included: Convert the horizontal wind direction angle and the transmission line section strike angle to the interval [0,360]; introduce the four-quadrant inverse tangent function Calculate the angle: in, Considering the changes in the four quadrants, the value range of the four-quadrant inverse tangent function becomes By adjusting the range and the conversion between radians and angles, the angle can be between The interval is: in, The result is in radians, multiplied by It is converted to an angle.

21. The transmission line lateral wind prediction system based on three-dimensional wind field according to claim 13, characterized in that: In the model building module, based on the three-dimensional wind component predicted at the height of the transmission line, the horizontal synthetic wind speed at the corresponding height is obtained, including: The height of the transmission line Meridional wind and zonal wind , calculate the magnitude of the horizontal composite wind speed based on orthogonality: 。 22. The transmission line lateral wind prediction system based on three-dimensional wind field according to claim 13, characterized in that: In the model building module, the angle between the transmission line section direction and the horizontal wind direction is calculated based on the horizontal synthetic wind speed, including: From horizontal wind direction and transmission line section strike angle , and the values ​​are adjusted In the same coordinate system, the angle α between the two is calculated as: Adjust the angle between the two Within the range, specifically: 。 23. The transmission line lateral wind prediction system based on three-dimensional wind field according to claim 13, characterized in that: In the model building module, a lateral wind prediction model facing the transmission line section is built based on the horizontal synthetic wind speed and the angle between the transmission line direction and the wind direction, including: The horizontal component of the lateral wind on the transmission line section is calculated based on the horizontal composite wind speed, the direction of the transmission line section and the angle between the horizontal wind direction. Size: Based on the vertical speed at the height of the transmission line and vertical wind direction , calculate the horizontal component of the lateral wind on the transmission line section Size: Then the lateral wind speed facing the transmission line considering the three-dimensional wind component is obtained: Computational model: 。 24. The transmission line lateral wind prediction system based on three-dimensional wind field according to claim 13, characterized in that: In the prediction module, based on the lateral wind prediction model for the transmission line section, lateral wind prediction for the transmission line is carried out at each forecast moment and each tower iteration, including: Based on the lateral wind prediction model for transmission line sections, a double-loop iteration in time and space is carried out for each integral time step of the numerical weather forecast and each transmission line section of the transmission line, and the lateral wind results are calculated for each integral time step and each tower iteration; Based on the lateral wind results of each integral time step and each tower iteration, the size is judged against the wind protection parameters of the transmission line design. When the lateral wind is greater than the design parameters, a high wind warning is issued for the transmission line section and the integral time step.

25. An electronic device, characterized in that: The method comprises a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor implements the method for predicting lateral wind of a transmission line based on a three-dimensional wind field as described in any one of claims 1 to 12 when executing the computer program.

26. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method for predicting lateral wind of a transmission line based on a three-dimensional wind field according to any one of claims 1 to 12 is implemented.

27. A computer program product, comprising computer instructions, characterized in that: The computer instructions instruct the computer to execute the method for predicting lateral wind of a transmission line based on a three-dimensional wind field as described in any one of claims 1-12.

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