A method and system for monitoring the condition of power transmission towers

Abstract

This invention discloses a method and system for monitoring the status of power transmission towers, relating to the field of tower monitoring technology. The method includes: constructing a tower model and obtaining the offset of each node; performing tilt simulation on the tower model to obtain the tilt range, dangerous tilt area, and dangerous node distribution; and monitoring the real-time status of the power transmission tower based on the dangerous node distribution and sensors. This invention addresses the problem that conventional information collection methods can only judge and monitor the tilt status of power transmission towers based on existing tilt angles and other information, failing to effectively analyze the overall deformation of the tower based on changes in the position of nodes formed by the main structural members, thus hindering timely monitoring when abnormal deformation occurs in the power transmission tower.

Description

Technical Field

[0001] This invention relates to the field of tower monitoring technology, specifically to a method and system for monitoring the status of power transmission towers. Background Technology

[0002] Transmission towers are structures used to support the conductors and lightning protection wires of high-voltage or ultra-high-voltage overhead transmission lines. They are mainly used in power transmission systems to transmit electrical energy by erecting conductors. The main methods for monitoring the condition of transmission towers include satellite remote sensing detection, Internet of Things sensor detection, drone inspection, on-site inspection, and early warning systems.

[0003] Existing methods for monitoring the condition of power transmission towers typically involve collecting information on surrounding soil and rock settlement, tilt, and meteorological data. Through monitoring and risk assessment, early warning values ​​are generated to indicate abnormalities in the tower. While this improved method can provide timely warnings of abnormal tower conditions, its information collection methods are relatively conventional. It can only determine and monitor the tower's tilt based on existing information such as tilt angles. When deformation of the main structural members causes changes in the tower structure, it cannot effectively analyze the overall deformation of the tower based on changes in the positions of the nodes, leading to a failure to promptly detect abnormal deformations. For example, in patent application CN118298592A... A real-time monitoring method and system for geological disasters in the foundations of high-voltage transmission line towers has been developed. This scheme collects information on the foundations of transmission towers, monitors their failure states, determines the degree of failure through failure discrimination criteria and comprehensive risk assessment, and sets early warning values ​​corresponding to different failure levels for early warning and forecasting. Other methods for monitoring the condition of transmission towers are usually focused on power supply monitoring and cannot address the issue of conventional information collection methods. They can only judge and monitor the tilt state of the transmission tower based on existing information such as tilt angle. When the main materials of the transmission tower deform and cause changes in the tower structure, they cannot effectively analyze the overall deformation of the transmission tower based on the positional changes of the nodes of the main materials. This leads to the problem of not being able to monitor abnormal deformation of the transmission tower in a timely manner. Therefore, it is necessary to improve the existing methods for monitoring the condition of transmission towers. Summary of the Invention

[0004] This invention aims to at least partially solve one of the technical problems in the prior art by proposing a method and system for monitoring the condition of power transmission towers. This addresses the issue that conventional information collection methods can only judge and monitor the tilt state of power transmission towers based on existing information such as tilt angles. When deformation of the main materials within the power transmission tower causes changes in the tower structure, it is impossible to effectively analyze the overall deformation of the power transmission tower based on the positional changes of the nodes formed by the main materials, resulting in the inability to monitor abnormal deformation of the power transmission tower in a timely manner.

[0005] To achieve the above objectives, in a first aspect, this application provides a method for monitoring the condition of power transmission towers, comprising the following steps:

[0006] A 3D model of the transmission tower is built based on the model data of the transmission tower in the database and is referred to as the tower model. Based on the tower model, all main materials corresponding to each node in the tower model are analyzed, and the point offset body corresponding to each node is obtained based on the analysis results.

[0007] The tower model is tilted based on the offset volume corresponding to each node, and the tilt range area and dangerous tilt area corresponding to the tower are obtained based on the tilt simulation results; the node distribution corresponding to the dangerous tilt area is obtained based on the tilt simulation and recorded as the dangerous node distribution.

[0008] The system monitors the real-time status of power transmission towers based on the distribution of hazardous nodes and sensors, including tilt sensors and position sensors.

[0009] Furthermore, a 3D model of the transmission tower is constructed based on the model data of the transmission tower in the database, and denoted as the tower model; based on the tower model, all main materials corresponding to each node in the tower model are analyzed, and the point offset volume corresponding to each node is obtained based on the analysis results, including:

[0010] Based on the model data of power transmission towers in the database, a three-dimensional model of the power transmission tower is built in the spatial coordinate system and denoted as the tower model. The bottom plane of the tower model coincides with the XY plane, and the ordinate of the highest point of the tower model is greater than 0.

[0011] In the XY plane of the spatial coordinate system, obtain the smallest circumcircle that completely encloses the bottom plane of the iron tower model, and denote it as the bottom circle of the iron tower; denote the center of the bottom circle of the iron tower as the bottom center point, and denote the highest point of the iron tower model as the top center point; denote the line connecting the bottom center point and the top center point as the standard perpendicular line, and denote the angle less than or equal to 90° formed by the standard perpendicular line and the XY plane as α.

[0012] Furthermore, based on the tower model, the analysis of all main materials corresponding to each node in the tower model, and the acquisition of the point offset volume corresponding to each node based on the analysis results, also includes:

[0013] All nodes formed by the intersection of the main materials in the tower model are marked and designated as main material nodes; tilt analysis is performed on each main material node using the tilt analysis method, and the point offset volume corresponding to each main material node is obtained based on the analysis results.

[0014] Furthermore, the tilt analysis method includes:

[0015] For any main material node in the tower model: the main materials constituting the main material node are respectively denoted as analysis main material FZ1 to analysis main material FZ. b Where b is a positive integer greater than or equal to 2; Based on the acceptance specifications of transmission towers, the maximum value of the ratio of the bending length of the main material to the length of the main material corresponding to the main material between adjacent main material nodes after the tower is erected is obtained and recorded as the maximum bending ratio. When the main material is bent, the straight distance between the main material nodes corresponding to the two ends of the main material before the main material is bent is recorded as the main material length, and the straight distance between the main material nodes corresponding to the two ends of the main material after the main material is bent is recorded as the main material bending length.

[0016] Obtain the maximum bending ratio corresponding to all main materials in the analysis; perform k bending simulations on the main material nodes in the tower model; after each bending simulation, mark the location of the main material node, and record the scatter plot formed by the marked points after all bending simulations as the bending scatter plot.

[0017] The bending simulation is as follows: all the main materials corresponding to the main material nodes are subjected to bending treatment, and for any one main material, the ratio of the bending length of the main material to the length of the main material during the bending treatment is greater than or equal to the maximum bending ratio of the main material.

[0018] Furthermore, the tilt analysis method also includes:

[0019] For a total of j groups of main material nodes, perform k bending simulations for each group and obtain the corresponding bending scatter plot for each group; place all the bending scatter plots corresponding to the j groups in the same bending coordinate system, and record the irregular body obtained by fitting all the scatter points in the bending coordinate system as the point offset body corresponding to the main material node.

[0020] Furthermore, a tilt simulation is performed on the tower model based on the point offset volume corresponding to each node, and the tilt range region and dangerous tilt region corresponding to the tower are obtained based on the tilt simulation results; the node distribution corresponding to the dangerous tilt region is obtained based on the tilt simulation, and is denoted as the dangerous node distribution, including:

[0021] Based on the height of the tower, the maximum allowable deviation of the tower's tilt is obtained, denoted as β, and the product of α and β is denoted as the maximum deviation angle.

[0022] The tower model is subjected to tilt simulation, which includes: randomly updating the position of all main material nodes in the tower model to any position in the offset body corresponding to the main material node; and adjusting the length of all main materials corresponding to the main material node based on the updated position of the main material node and the positional relationship between the main material node and its adjacent main material nodes; for any main material, the adjusted length of the main material is less than or equal to the length of the main material corresponding to the main material.

[0023] Furthermore, the tilt simulation also includes:

[0024] The tower model obtained after updating the position of all main material nodes and adjusting the length of all main materials is denoted as the tilt simulation model; the line connecting the bottom center point and the top center point in the tilt simulation model is denoted as the tilt vertical line, and the degree of the acute angle formed by the tilt vertical line and the standard vertical line at the bottom center point is denoted as the simulated tilt angle.

[0025] When the simulated tilt angle is less than or equal to the maximum deviation angle, the area occupied by the tilt simulation model at this time is recorded as the tilt allowable area; when the simulated tilt angle is greater than the maximum deviation angle, the area occupied by the tilt simulation model at this time is recorded as the tilt prohibition area.

[0026] Furthermore, the tilt simulation also includes:

[0027] Based on the method of obtaining the tilt simulation model, the positions of all main material nodes in the tower model are randomly updated k times, and the tilt simulation model obtained after each position update of all main material nodes is obtained; the tilt allowable area or tilt prohibitive area corresponding to the k tilt simulation models is obtained, and the area obtained after all tilt allowable areas overlap is recorded as the tilt range area, and the area obtained after all tilt prohibitive areas overlap is recorded as the tilt screening area.

[0028] The area in the inclined screening area that does not overlap with the inclined range area is recorded as the dangerous inclined area; among all the inclined prohibited areas, the inclined prohibited area with the largest volume that overlaps with the dangerous inclined area is recorded as the dangerous analysis area, and the position data of all main material nodes in the inclined simulation model corresponding to the dangerous analysis area are recorded, and the distribution status of all main material nodes recorded is recorded as the dangerous node distribution.

[0029] Furthermore, monitoring the real-time status of transmission towers based on the distribution of hazardous nodes and sensors includes:

[0030] Based on the tilt sensor, the angle formed by the line connecting the bottom center point and the top center point of the tower and the ground is obtained in real time and recorded as the real-time tilt angle.

[0031] When the difference between the real-time tilt angle and α is greater than the maximum deviation angle, a tower tilt danger warning is sent.

[0032] When the difference between the real-time tilt angle and α is less than or equal to the maximum deviation angle, the distribution of the positions of all main material nodes in the tower is obtained based on the position sensor and recorded as the real-time node distribution.

[0033] A model of the iron tower is built based on the real-time node distribution in the spatial coordinate system and is denoted as the real-time iron tower model. When the real-time iron tower model and the dangerous tilt area overlap arbitrarily, an iron tower tilt danger warning is sent. For any main material node, when the position of the main material node in the real-time node distribution is the same as its position in the dangerous node distribution, the main material node is recorded as a hidden danger node. When the number of hidden danger nodes is greater than t, an iron tower deformation danger warning is sent, where t is half of the total number of main material nodes and rounded down.

[0034] Secondly, this application also provides a power transmission tower condition monitoring system, including a tower node analysis module, a tower tilt simulation module, and a tower condition monitoring module.

[0035] The tower node analysis module is used to build a 3D model of the transmission tower based on the model data of the transmission tower in the database, and denoted as the tower model; based on the tower model, it analyzes all the main materials corresponding to each node in the tower model, and obtains the point offset body corresponding to each node based on the analysis results;

[0036] The tower tilt simulation module is used to simulate the tilt of the tower model based on the offset volume corresponding to each node, and to obtain the tilt range area and dangerous tilt area of ​​the tower based on the tilt simulation results; the node distribution corresponding to the dangerous tilt area is obtained based on the tilt simulation and recorded as the dangerous node distribution.

[0037] The tower status monitoring module is used to monitor the real-time status of transmission towers based on the distribution of dangerous nodes and sensors, including tilt sensors and position sensors.

[0038] The beneficial effects of this invention are as follows: First, this application constructs a three-dimensional model of the power transmission tower based on the model data of the power transmission tower in the database, and denoted as the tower model. Based on the tower model, all main materials corresponding to each node in the tower model are analyzed, and the point offset body corresponding to each node is obtained based on the analysis results. The advantage of this is that by obtaining the point offset body corresponding to each node in the tower model, the range of movement of each node in the tower when the main material structure changes can be obtained based on the deformation range of the main material in the tower under normal conditions. This allows for effective analysis of the overall deformation of the power transmission tower based on the positional changes of the nodes composed of the main materials in subsequent analysis, thereby obtaining the state of the power transmission tower shape under abnormal conditions and the distribution of each node under abnormal conditions, so as to monitor the power transmission tower in a timely manner when there is abnormal deformation.

[0039] This application also performs tilt simulation on the tower model based on the point offset body corresponding to each node, and obtains the tilt range area and dangerous tilt area corresponding to the tower based on the tilt simulation results; obtains the node distribution corresponding to the dangerous tilt area based on the tilt simulation, and records it as the dangerous node distribution; finally, monitors the real-time status of the transmission tower based on the dangerous node distribution and sensors. The advantage of this is that by obtaining the tilt range area and dangerous tilt area, it is possible to obtain the corresponding areas where the tilt of the transmission tower is within the allowable range and the tilt exceeds the allowable range under various circumstances where the main material in the transmission tower moves due to deformation, so as to facilitate the monitoring of abnormal deformation of the transmission tower in subsequent analysis; and by obtaining the dangerous node distribution, it is possible to obtain the distribution status of each node in the transmission tower corresponding to the dangerous tilt area, so as to monitor the abnormal deformation of the transmission tower in a timely manner based on the position of each node in the transmission tower. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the system of the present invention;

[0041] Figure 2 This is a flowchart illustrating the steps of the method of the present invention;

[0042] Figure 3 This is a schematic diagram of the main material nodes and their corresponding analytical main materials in this invention;

[0043] Figure 4 for Figure 3 A schematic diagram showing the deformation of the main material in the analysis;

[0044] Figure 5 A schematic diagram showing the changes in the location of the main material nodes;

[0045] Figure 6 This is a schematic diagram for simulating the acquisition of the tilt angle;

[0046] Figure 7 This is a schematic diagram of the electronic device of the present invention. Detailed Implementation

[0047] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0048] Example 1, First Aspect, Please refer to Figure 1 As shown, this application provides a power transmission tower condition monitoring system, including a tower node analysis module, a tower tilt simulation module, and a tower condition monitoring module;

[0049] The tower node analysis module is used to build a 3D model of the transmission tower based on the model data of the transmission tower in the database, and denoted as the tower model; based on the tower model, it analyzes all the main materials corresponding to each node in the tower model, and obtains the point offset body corresponding to each node based on the analysis results;

[0050] The tower node analysis module includes a tower node analysis unit, which is configured with tower node analysis strategies. These strategies include:

[0051] Based on the model data of power transmission towers in the database, a three-dimensional model of the power transmission tower is built in the spatial coordinate system and denoted as the tower model. The bottom plane of the tower model coincides with the XY plane, and the ordinate of the highest point of the tower model is greater than 0.

[0052] In the specific implementation process, the highest point of the tower model, that is, the vertex of the transmission tower, can be used to mark the subsequent top center point by directly obtaining the vertex of the transmission tower.

[0053] In the XY plane of the spatial coordinate system, obtain the smallest circumcircle that completely encloses the bottom plane of the iron tower model, and denote it as the iron tower bottom circle; denote the center of the iron tower bottom circle as the bottom center point, and denote the highest point of the iron tower model as the top center point; denote the line connecting the bottom center point and the top center point as the standard perpendicular line, and denote the angle less than or equal to 90° formed by the standard perpendicular line and the XY plane as α;

[0054] In the specific implementation process, by obtaining the standard vertical line, we can provide data support for subsequent data analysis in terms of tilt judgment, so as to provide an effective judgment on whether there is a risk in the tilt state of the transmission tower.

[0055] All nodes formed by the intersection of the main members in the tower model are marked and designated as main member nodes; tilt analysis is performed on each main member node using the tilt analysis method, and the point offset volume corresponding to each main member node is obtained based on the analysis results;

[0056] The tilt analysis method includes: For any main material node in the tower model: the main materials constituting the main material node are respectively denoted as analysis main material FZ1 to analysis main material FZ. b Where b is a positive integer greater than or equal to 2; Based on the acceptance specifications of transmission towers, the maximum value of the ratio of the bending length of the main material to the length of the main material corresponding to the main material between adjacent main material nodes after the tower is erected is obtained and recorded as the maximum bending ratio. When the main material is bent, the straight distance between the main material nodes corresponding to the two ends of the main material before the main material is bent is recorded as the main material length, and the straight distance between the main material nodes corresponding to the two ends of the main material after the main material is bent is recorded as the main material bending length.

[0057] In the specific implementation process, the maximum bending ratio can be set according to the acceptance specifications corresponding to the main materials inside the actual transmission tower. In this embodiment, the maximum bending ratio used in subsequent analysis is 0.9867; for example, in a data analysis, the main material nodes and their corresponding main materials are as follows: Figure 3 As shown in PT1, ZJ is the main material node, and ZC1 to ZC3 are all main materials for analysis. The main material node ZJ is obtained by welding ZC1 to ZC3.

[0058] Obtain the maximum bending ratio corresponding to all main materials in the analysis; perform k bending simulations on the main material nodes in the tower model; after each bending simulation, mark the location of the main material node, and record the scatter plot formed by the marked points after all bending simulations as the bending scatter plot.

[0059] The bending simulation is as follows: all the main materials corresponding to the main material nodes are bent, and for any one main material, the ratio of the bending length of the main material to the length of the main material during the bending process is greater than or equal to the maximum bending ratio of the main material.

[0060] In the specific implementation process, after obtaining ZC1 to ZC3 and PT1 corresponding to ZJ based on the above welding, during the bending simulation after a period of time, the main material corresponding to ZC2 undergoes deformation, resulting in the positional relationship between ZJ, ZC1, ZC2, and ZC3 as follows: Figure 4 As shown in PT2, analysis reveals that for ZC2, the main material length is... Figure 3 The length of LL1 within PT1, and the bending length of the main material are... Figure 4The length of LL2 within PT2 is calculated to be 0.9888 when LL2 is divided by LL1, which is greater than the maximum bending ratio. Therefore, the bending simulation is valid. However, the position corresponding to ZJ has changed after the bending simulation. Please refer to [link / reference needed]. Figure 5 As shown in PT3, ZJ1 is Figure 3 The location of ZJ is ZJ2. Figure 4 The location of ZJ in China;

[0061] For a total of j groups of main material nodes, perform k bending simulations for each group and obtain the corresponding bending scatter plot for each group; place all the bending scatter plots corresponding to the j groups in the same bending coordinate system, and record the irregular body obtained by fitting all the scatter points in the bending coordinate system as the point offset body corresponding to the main material node.

[0062] In the specific implementation process, the values ​​of j and k can be determined according to the number of bending simulations that can be performed in actual application. In this embodiment, the values ​​of j and k are set to 10 and 5, respectively. By obtaining the point offset body, the range of movement of each node in the tower when the main material structure changes can be obtained based on the deformation range of the main material in the tower under normal conditions. This allows for effective analysis of the overall deformation of the transmission tower based on the positional changes of the nodes formed by the main material in subsequent analysis, thereby obtaining the state of the transmission tower shape under abnormal conditions and the distribution of each node under abnormal conditions, so as to monitor the abnormal deformation of the transmission tower in a timely manner.

[0063] The tower tilt simulation module is used to simulate the tilt of the tower model based on the offset volume corresponding to each node, and to obtain the tilt range area and dangerous tilt area of ​​the tower based on the tilt simulation results; the node distribution corresponding to the dangerous tilt area is obtained based on the tilt simulation and recorded as the dangerous node distribution.

[0064] The tower tilt simulation module includes a tower tilt simulation unit, which is configured with a tower tilt simulation strategy. The tower tilt simulation strategy includes:

[0065] Based on the height of the tower, the maximum allowable deviation of the tower's tilt is obtained, denoted as β, and the product of α and β is denoted as the maximum deviation angle.

[0066] The tower model is subjected to tilt simulation, which includes: randomly updating the position of all main material nodes in the tower model to any position within the offset body corresponding to the main material node; and adjusting the length of all main materials corresponding to the main material node based on the updated position of the main material node and the positional relationship between the main material node and its adjacent main material nodes; for any main material, the adjusted length of the main material is less than or equal to the length of the main material corresponding to the main material.

[0067] The tower model obtained after updating the position of all main material nodes and adjusting the length of all main materials is denoted as the tilt simulation model; the line connecting the bottom center point and the top center point in the tilt simulation model is denoted as the tilt vertical line, and the degree of the acute angle formed by the tilt vertical line and the standard vertical line at the bottom center point is denoted as the simulated tilt angle.

[0068] In the specific implementation process, for example, during a data analysis, the obtained inclined vertical line and standard vertical line are as follows: Figure 6 As shown in QC and QB, the plane XY is the XY plane in the spatial coordinate system, so the angle γ is the simulated tilt angle. By comparing the simulated tilt angle with the maximum deviation angle, we can obtain the area that will cause the transmission tower to tilt under the condition that each node in the transmission tower is within the allowable range of activity, namely the tilt prohibition area, and the area corresponding to the normal tilt of the transmission tower, namely the tilt allowable area. This is to ensure that the tilt risk of the transmission tower can still be monitored in a timely and accurate manner even when each node in the transmission tower is within the allowable range of activity during subsequent analysis.

[0069] When the simulated tilt angle is less than or equal to the maximum deviation angle, the area occupied by the tilt simulation model at this time is recorded as the tilt allowable area; when the simulated tilt angle is greater than the maximum deviation angle, the area occupied by the tilt simulation model at this time is recorded as the tilt prohibition area.

[0070] Based on the method of obtaining the tilt simulation model, the positions of all main material nodes in the tower model are randomly updated k times, and the tilt simulation model obtained after each position update of all main material nodes is obtained; the tilt allowable area or tilt prohibitive area corresponding to the k tilt simulation models is obtained, and the area obtained after all tilt allowable areas overlap is recorded as the tilt range area, and the area obtained after all tilt prohibitive areas overlap is recorded as the tilt screening area.

[0071] The area in the inclined screening area that does not overlap with the inclined range area is recorded as the dangerous inclined area; among all the inclined prohibited areas, the inclined prohibited area with the largest volume that overlaps with the dangerous inclined area is recorded as the dangerous analysis area, and the position data of all main material nodes in the inclined simulation model corresponding to the dangerous analysis area are recorded, and the distribution status of all main material nodes recorded is recorded as the dangerous node distribution.

[0072] In the specific implementation process, the dangerous tilt area is the area where the transmission tower will exist when the tilt deviation of the transmission tower is higher than the maximum deviation angle. Therefore, by obtaining the dangerous analysis area and the distribution of dangerous nodes, we can obtain the distribution status of each node in the transmission tower when the transmission tower is in the tilt state with the greatest risk and all nodes in the transmission tower are within the allowable range of activity. This allows for timely monitoring of abnormal deformation of the transmission tower based on the position of each node in the transmission tower.

[0073] The tower status monitoring module is used to monitor the real-time status of transmission towers based on the distribution of dangerous nodes and sensors, including tilt sensors and position sensors.

[0074] The tower status monitoring module includes a tower status monitoring unit, which is configured with a tower status monitoring strategy. The tower status monitoring strategy includes:

[0075] Based on the tilt sensor, the angle formed by the line connecting the bottom center point and the top center point of the tower and the ground is obtained in real time and recorded as the real-time tilt angle.

[0076] When the difference between the real-time tilt angle and α is greater than the maximum deviation angle, a tower tilt danger warning is sent.

[0077] When the difference between the real-time tilt angle and α is less than or equal to the maximum deviation angle, the distribution of the positions of all main material nodes in the tower is obtained based on the position sensor and recorded as the real-time node distribution.

[0078] A model corresponding to the tower is built based on the real-time node distribution in the spatial coordinate system and is denoted as the real-time tower model. When the real-time tower model and the dangerous tilting area overlap arbitrarily, a tower tilting danger warning is sent.

[0079] In the specific implementation process, when the real-time tower model and the dangerous tilt area overlap arbitrarily, it means that even if the tilt angle of the transmission tower is within the normal range, the overall shape of the transmission tower is abnormal, causing it to overlap with the dangerous tilt area. Under normal circumstances, if the shape of the transmission tower is not abnormal, the real-time tower model and the dangerous tilt area will not overlap when the difference between the real-time tilt angle and α is less than or equal to the maximum deviation angle. Therefore, it can be used to determine whether there is a risk of abnormal shape of the transmission tower.

[0080] For any main material node, when the position of the main material node in the real-time node distribution is the same as its position in the dangerous node distribution, the main material node is recorded as a hidden danger node; when the number of hidden danger nodes is greater than t, a tower deformation danger warning is sent, where t is half of the total number of main material nodes and the value is rounded down.

[0081] In the actual implementation process, the value of t is changed according to actual needs to ensure that early warning can be given in a timely manner when there is a risk of tilt angle of the transmission tower.

[0082] Example 2, Second Aspect, Please refer to Figure 2 As shown, this application also provides a method for monitoring the condition of power transmission towers, including the following steps:

[0083] Step S1: Based on the model data of the transmission tower in the database, build a three-dimensional model of the transmission tower and denot it as the tower model; based on the tower model, analyze all the main materials corresponding to each node in the tower model, and obtain the point offset body corresponding to each node based on the analysis results;

[0084] Step S1 includes: Step S101, based on the model data of the transmission tower in the database, build a three-dimensional model corresponding to the transmission tower in the spatial coordinate system and denot it as the tower model, wherein the bottom plane of the tower model coincides with the XY plane, and the ordinate of the highest point of the tower model is greater than 0.

[0085] Step S102: Obtain the smallest circumcircle that completely encloses the bottom plane of the iron tower model in the XY plane of the spatial coordinate system, and denot it as the iron tower bottom circle; denot the center of the iron tower bottom circle as the bottom center point, and denot the highest point of the iron tower model as the top center point; denot the line connecting the bottom center point and the top center point as the standard perpendicular line, and denot the angle less than or equal to 90° formed by the standard perpendicular line and the XY plane as α.

[0086] Step S1 also includes: Step S103, marking all nodes formed by the intersection of the main materials in the tower model and recording them as main material nodes; performing tilt analysis on each main material node using the tilt analysis method, and obtaining the point offset body corresponding to each main material node based on the analysis results;

[0087] The tilt analysis method includes: Step S1031, for any main material node in the tower model: the main materials constituting the main material node are respectively denoted as analysis main material FZ1 to analysis main material FZ. b Where b is a positive integer greater than or equal to 2; Based on the acceptance specifications of transmission towers, the maximum value of the ratio of the bending length of the main material to the length of the main material corresponding to the main material between adjacent main material nodes after the tower is erected is obtained and recorded as the maximum bending ratio. When the main material is bent, the straight distance between the main material nodes corresponding to the two ends of the main material before the main material is bent is recorded as the main material length, and the straight distance between the main material nodes corresponding to the two ends of the main material after the main material is bent is recorded as the main material bending length.

[0088] Step S1032: Obtain the maximum bending ratio corresponding to all main materials in the analysis; perform k bending simulations on the main material nodes in the tower model; after each bending simulation, mark the points where the main material nodes are located, and record the scatter plot formed by the points marked after all bending simulations as the bending scatter plot.

[0089] Step S1033, bending simulation is as follows: all analyzed main materials corresponding to the main material nodes are bent, and for any analyzed main material, the ratio of the main material bending length to the main material length during bending is greater than or equal to the maximum bending ratio of the analyzed main material.

[0090] The tilt analysis method also includes: step S1034, performing k bending simulations for each of the j groups of main material nodes, and obtaining the bending scatter plot corresponding to each group; placing all the bending scatter plots corresponding to the j groups in the same bending coordinate system, and recording the irregular body obtained by fitting all the scatter points in the bending coordinate system as the point offset body corresponding to the main material node.

[0091] Step S2: Perform tilt simulation on the tower model based on the point offset body corresponding to each node, and obtain the tilt range area and dangerous tilt area corresponding to the tower based on the tilt simulation results; obtain the node distribution corresponding to the dangerous tilt area based on the tilt simulation, and record it as the dangerous node distribution.

[0092] Step S2 includes: Step S201, based on the height of the tower, obtain the maximum allowable deviation of the tower's tilt angle, denoted as β, and record the product of α and β as the maximum deviation angle;

[0093] Step S202: Perform tilt simulation on the tower model. The tilt simulation includes: Step S2021: Randomly update the position of all main material nodes in the tower model to any position within the offset body corresponding to the main material node. Based on the updated position of the main material node and the positional relationship between the main material node and its adjacent main material nodes, adjust the length of all analyzed main materials corresponding to the main material node. For any analyzed main material, the adjusted length of the analyzed main material is less than or equal to the length of the main material corresponding to the analyzed main material.

[0094] The tilt simulation also includes: step S2022, where the tower model obtained after updating the position of all main material nodes and adjusting the length of all main materials is recorded as the tilt simulation model; the line connecting the bottom center point and the top center point in the tilt simulation model is recorded as the tilt vertical line, and the degree of the acute angle formed by the tilt vertical line and the standard vertical line at the bottom center point is recorded as the simulated tilt angle;

[0095] Step S2023: When the simulated tilt angle is less than or equal to the maximum deviation angle, the area occupied by the tilt simulation model at this time is recorded as the tilt allowable area; when the simulated tilt angle is greater than the maximum deviation angle, the area occupied by the tilt simulation model at this time is recorded as the tilt prohibition area.

[0096] Step S2024: Based on the method of obtaining the tilt simulation model, the positions of all main material nodes in the tower model are randomly updated k times, and the tilt simulation model obtained after each position update of all main material nodes is obtained; the tilt allowable area or tilt prohibitive area corresponding to the k tilt simulation models is obtained, and the area obtained after all tilt allowable areas overlap is recorded as the tilt range area, and the area obtained after all tilt prohibitive areas overlap is recorded as the tilt screening area.

[0097] Step S2025: The area in the inclined screening area that does not overlap with the inclined range area is recorded as the dangerous inclined area; among all the inclined prohibited areas, the inclined prohibited area with the largest volume that overlaps with the dangerous inclined area is recorded as the dangerous analysis area, and the position data of all main material nodes in the inclined simulation model corresponding to the dangerous analysis area are recorded, and the distribution status of all main material nodes recorded is recorded as the dangerous node distribution.

[0098] Step S3: Based on the distribution of dangerous nodes and the real-time status of the transmission towers monitored by sensors, including tilt sensors and position sensors.

[0099] Step S3 includes: Step S301, based on the tilt sensor, the angle formed by the line connecting the bottom center point and the top center point of the tower and the ground is obtained in real time and recorded as the real-time tilt angle;

[0100] Step S302: When the difference between the real-time tilt angle and α is greater than the maximum deviation angle, a tower tilt danger warning is sent.

[0101] Step S303: When the difference between the real-time tilt angle and α is less than or equal to the maximum deviation angle, the distribution status of the positions of all main material nodes in the tower is obtained based on the position sensor and recorded as the real-time node distribution.

[0102] Step S304: Based on the real-time node distribution, build a model of the tower corresponding to it in the spatial coordinate system and record it as the real-time tower model. When the real-time tower model overlaps with the dangerous tilt area, send a tower tilt danger warning. For any main material node, when the position of the main material node in the real-time node distribution is the same as its position in the dangerous node distribution, record the main material node as a hidden danger node. When the number of hidden danger nodes is greater than t, send a tower deformation danger warning, where t is half of the total number of main material nodes and rounded down.

[0103] Example 3, please refer to Figure 7 As shown, Figure 7A schematic diagram of an electronic device is provided, which may include a processor, a communication interface, a memory, and a communication bus. The processor, communication interface, and memory communicate with each other via the communication bus. The memory stores computer-readable instructions, and the processor can call these instructions. When the processor executes a computer-readable instruction, it performs steps similar to those in a power transmission tower status monitoring method to achieve the following functions: First, a three-dimensional model of the power transmission tower is constructed based on model data of the power transmission tower in a database, and this model is denoted as the tower model. Then, all main materials corresponding to each node in the tower model are analyzed based on the tower model, and the point offset volume corresponding to each node is obtained based on the analysis results. Next, the tower model is tilted based on the point offset volume corresponding to each node, and the tilt range area and dangerous tilt area corresponding to the tower are obtained based on the tilt simulation results. The node distribution corresponding to the dangerous tilt area is obtained based on the tilt simulation and denoted as the dangerous node distribution. Finally, the real-time status of the power transmission tower is monitored based on the dangerous node distribution and sensors, including tilt sensors and position sensors.

[0104] Furthermore, when the logical instructions in the aforementioned memory can be implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0105] Example 4: This application also provides a computer-readable storage medium storing a computer program. When the computer program is executed by a processor, it performs the steps of the above-described method for monitoring the status of power transmission towers to achieve the following functions: First, a three-dimensional model of the power transmission tower is built based on the model data of the power transmission tower in the database, and is denoted as the tower model; based on the tower model, all main materials corresponding to each node in the tower model are analyzed, and the point offset body corresponding to each node is obtained based on the analysis results; then, the tower model is tilted based on the point offset body corresponding to each node, and the tilt range area and dangerous tilt area corresponding to the tower are obtained based on the tilt simulation results; the node distribution corresponding to the dangerous tilt area is obtained based on the tilt simulation, and is denoted as the dangerous node distribution; finally, the real-time status of the power transmission tower is monitored based on the dangerous node distribution and sensors, wherein the sensors include tilt sensors and position sensors.

[0106] Based on the above description of the embodiments, the embodiments of the present invention can be provided as methods, systems, or computer program products. Based on this understanding, the above technical solutions, in essence or in terms of their contribution to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or certain parts of the embodiments.

[0107] In the embodiments provided in this application, it should be understood that the disclosed system or method can be implemented in other ways. The embodiments described above are merely illustrative. For example, the division of modules or units is only a logical functional division, and there may be other division methods in actual implementation. Furthermore, multiple modules or units may be combined or integrated into another system, or some features may be ignored or not executed. Additionally, the coupling or direct coupling or communication connection shown or discussed may be through some communication interfaces. The indirect coupling or communication connection between systems, modules, and units may be electrical, mechanical, or other forms.

[0108] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A method for monitoring the condition of power transmission towers, characterized in that, Includes the following steps: A 3D model of the transmission tower is built based on the model data of the transmission tower in the database and is referred to as the tower model. Based on the tower model, all main materials corresponding to each node in the tower model are analyzed, and the point offset body corresponding to each node is obtained based on the analysis results. The tower model is tilted based on the offset volume of each node, and the tilt range area and dangerous tilt area of ​​the tower are obtained based on the tilt simulation results. The node distribution corresponding to the dangerous tilt area is obtained based on the tilt simulation and recorded as the dangerous node distribution; The system monitors the real-time status of power transmission towers based on the distribution of dangerous nodes and sensors, including tilt sensors and position sensors. A 3D model of the transmission tower is constructed based on the model data of the transmission tower in the database, and denoted as the tower model. Based on the tower model, all main materials corresponding to each node in the tower model are analyzed, and the point offset volume corresponding to each node is obtained based on the analysis results, including: Based on the model data of power transmission towers in the database, a three-dimensional model of the power transmission tower is built in the spatial coordinate system and denoted as the tower model. The bottom plane of the tower model coincides with the XY plane, and the ordinate of the highest point of the tower model is greater than 0. In the XY plane of the spatial coordinate system, obtain the smallest circumcircle that completely encloses the bottom plane of the iron tower model, and denote it as the iron tower bottom circle; denote the center of the iron tower bottom circle as the bottom center point, and denote the highest point of the iron tower model as the top center point; denote the line connecting the bottom center point and the top center point as the standard perpendicular line, and denote the angle less than or equal to 90° formed by the standard perpendicular line and the XY plane as α; Based on the tower model, the analysis of all main materials corresponding to each node in the tower model is performed, and the point offset volume corresponding to each node is obtained based on the analysis results. This also includes: All nodes formed by the intersection of the main members in the tower model are marked and designated as main member nodes; tilt analysis is performed on each main member node using the tilt analysis method, and the point offset volume corresponding to each main member node is obtained based on the analysis results; Inclined analysis methods include: For any main material node in the tower model: the main materials constituting the main material node are respectively denoted as analysis main material FZ1 to analysis main material FZ. b Where b is a positive integer greater than or equal to 2; Based on the acceptance specifications of transmission towers, the maximum value of the ratio of the bending length of the main material to the length of the main material corresponding to the main material between adjacent main material nodes after the tower is erected is obtained and recorded as the maximum bending ratio. When the main material is bent, the straight distance between the main material nodes corresponding to the two ends of the main material before the main material is bent is recorded as the main material length, and the straight distance between the main material nodes corresponding to the two ends of the main material after the main material is bent is recorded as the main material bending length. Obtain the maximum bending ratio corresponding to all main materials in the analysis; perform k bending simulations on the main material nodes in the tower model; after each bending simulation, mark the location of the main material node, and record the scatter plot formed by the marked points after all bending simulations as the bending scatter plot. The bending simulation is as follows: all the main materials corresponding to the main material nodes are bent, and for any one main material, the ratio of the bending length of the main material to the length of the main material during the bending process is greater than or equal to the maximum bending ratio of the main material. The tilt analysis method also includes: For a total of j groups of main material nodes, perform k bending simulations for each group and obtain the corresponding bending scatter plot for each group; place all the bending scatter plots corresponding to the j groups in the same bending coordinate system, and record the irregular body obtained by fitting all the scatter points in the bending coordinate system as the point offset body corresponding to the main material node.

2. The method for monitoring the condition of power transmission towers according to claim 1, characterized in that, The tower model is tilted based on the offset volume of each node, and the tilt range area and dangerous tilt area of ​​the tower are obtained based on the tilt simulation results. The distribution of nodes corresponding to dangerous tilt areas is obtained based on tilt simulation, and is denoted as dangerous node distribution, including: Based on the height of the tower, the maximum allowable deviation of the tower's tilt is obtained, denoted as β, and the product of α and β is denoted as the maximum deviation angle. The tower model is subjected to tilt simulation, which includes: randomly updating the position of all main material nodes in the tower model to any position in the offset body corresponding to the main material node; and adjusting the length of all main materials corresponding to the main material node based on the updated position of the main material node and the positional relationship between the main material node and its adjacent main material nodes; for any main material, the adjusted length of the main material is less than or equal to the length of the main material corresponding to the main material.

3. The method for monitoring the condition of power transmission towers according to claim 2, characterized in that, The tilt simulation also includes: The tower model obtained after updating the position of all main material nodes and adjusting the length of all main materials is denoted as the tilt simulation model; the line connecting the bottom center point and the top center point in the tilt simulation model is denoted as the tilt vertical line, and the degree of the acute angle formed by the tilt vertical line and the standard vertical line at the bottom center point is denoted as the simulated tilt angle. When the simulated tilt angle is less than or equal to the maximum deviation angle, the area occupied by the tilt simulation model at this time is recorded as the tilt allowable area; when the simulated tilt angle is greater than the maximum deviation angle, the area occupied by the tilt simulation model at this time is recorded as the tilt prohibition area.

4. The method for monitoring the condition of power transmission towers according to claim 3, characterized in that, The tilt simulation also includes: Based on the method of obtaining the tilt simulation model, the positions of all main material nodes in the tower model are randomly updated k times, and the tilt simulation model obtained after each position update of all main material nodes is obtained; the tilt allowable area or tilt prohibitive area corresponding to the k tilt simulation models is obtained, and the area obtained after all tilt allowable areas overlap is recorded as the tilt range area, and the area obtained after all tilt prohibitive areas overlap is recorded as the tilt screening area. The area in the inclined screening area that does not overlap with the inclined range area is recorded as the dangerous inclined area; among all the inclined prohibited areas, the inclined prohibited area with the largest volume that overlaps with the dangerous inclined area is recorded as the dangerous analysis area, and the position data of all main material nodes in the inclined simulation model corresponding to the dangerous analysis area are recorded, and the distribution status of all main material nodes recorded is recorded as the dangerous node distribution.

5. The method for monitoring the condition of a power transmission tower according to claim 4, characterized in that, Monitoring the real-time status of transmission towers based on the distribution of hazardous nodes and sensors includes: Based on the tilt sensor, the angle formed by the line connecting the bottom center point and the top center point of the tower and the ground is obtained in real time and recorded as the real-time tilt angle. When the difference between the real-time tilt angle and α is greater than the maximum deviation angle, a tower tilt danger warning is sent. When the difference between the real-time tilt angle and α is less than or equal to the maximum deviation angle, the distribution of the positions of all main material nodes in the tower is obtained based on the position sensor and recorded as the real-time node distribution. A model of the iron tower is built based on the real-time node distribution in the spatial coordinate system and is denoted as the real-time iron tower model. When the real-time iron tower model coincides with any dangerous tilt area, an iron tower tilt danger warning is sent. For any main material node, when the position of the main material node in the real-time node distribution is the same as its position in the dangerous node distribution, the main material node is recorded as a hidden danger node. When the number of hidden danger nodes is greater than t, an iron tower deformation danger warning is sent, where t is half of the total number of main material nodes and rounded down.

6. A transmission tower condition monitoring system, used to implement the transmission tower condition monitoring method according to any one of claims 1-5, characterized in that, It includes a tower node analysis module, a tower tilt simulation module, and a tower status monitoring module; The tower node analysis module is used to build a 3D model of the transmission tower based on the model data of the transmission tower in the database, and denoted as the tower model; based on the tower model, it analyzes all the main materials corresponding to each node in the tower model, and obtains the point offset body corresponding to each node based on the analysis results; The tower tilt simulation module is used to simulate the tilt of the tower model based on the offset body corresponding to each node, and to obtain the tilt range area and dangerous tilt area of ​​the tower based on the tilt simulation results. The node distribution corresponding to the dangerous tilt area is obtained based on the tilt simulation and recorded as the dangerous node distribution; The tower status monitoring module is used to monitor the real-time status of transmission towers based on the distribution of dangerous nodes and sensors, including tilt sensors and position sensors.

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