A transmission line tower tilt monitoring method and terminal

Abstract

The present application relates to the technical field of pole tower inclination measurement, and specifically to a transmission line pole tower inclination monitoring method and terminal, the method comprising: collecting inclination data of positions at different heights on each main material of the transmission line pole tower at each time within the inclination measurement period; obtaining the reference measurement inclination of each position point according to the periodic distribution of the inclination data of each position point at all times; obtaining the overall inclination of the pole tower according to the reference measurement inclination of all position points on each main material and the difference in the reference measurement inclination of adjacent position points, and the similarity of the reference measurement inclination of all position points on different main materials with height changes; obtaining the transmission line pole tower inclination measurement result of the current inclination measurement period according to the overall inclination of the pole tower in all inclination measurement periods. The present application can improve the accuracy of transmission line pole tower inclination measurement.

Description

Technical Field

[0001] The present application relates to the technical field of pole tower inclination measurement, and in particular to a transmission line pole tower inclination monitoring method and terminal. Background Art

[0002] Transmission line towers are important facilities used to support transmission lines in power systems. They fix transmission lines in the air to ensure that electricity can be transmitted safely and efficiently. Transmission line towers have a high center of gravity and a small bottom area. When the geology of their location changes, transmission line towers are prone to tilt. In serious cases, the towers will collapse, causing line breaks, paralyzing the transmission lines and causing huge losses. Therefore, it is necessary to monitor the tilt of transmission line towers to ensure safe and stable power supply of transmission lines.

[0003] Since the tilt of transmission line towers develops slowly, it is necessary to obtain tilt data regularly to analyze and predict the tilt trend of transmission line towers, detect the slight tilt of transmission line towers as early as possible and perform maintenance in time to prevent the collapse of transmission line towers. At present, the use of fiber grating tilt sensors to measure the tilt of transmission line towers and determine their tilt is a commonly used tilt monitoring method in the industry. However, due to the strong wind outdoors, the transmission line towers are constantly vibrating. When the fiber grating tilt sensor measures the slight tilt change caused by the short-term vibration of the transmission line tower, it will reduce the accuracy of the transmission line tower tilt monitoring. Summary of the invention

[0004] In order to solve the above technical problems, the purpose of this application is to provide a transmission line tower tilt monitoring method and terminal, and the technical solutions adopted are as follows:

[0005] In a first aspect, an embodiment of the present application provides a method for monitoring the inclination of a transmission line tower, the method comprising the following steps:

[0006] S1, collecting the inclination data of the position points at different heights on each main material of the transmission line tower at each time during the inclination measurement period;

[0007] S2, dividing the vibration period window according to the periodic distribution of the inclination data at all times of each position point; obtaining the reference measurement inclination angle of each position point according to the numerical fluctuation amplitude of the inclination data in all vibration period windows of each position point;

[0008] S3, according to the reference measurement inclination angle of all position points on each main material and the difference of the reference measurement inclination angle of adjacent position points, the main material inclination degree of each main material is obtained; according to the similarity of the reference measurement inclination angle of all position points on different main materials changing with height and the main material inclination degree, the overall inclination of the tower is obtained;

[0009] S4, continuously obtaining the overall inclination of the tower in a preset number of inclination measurement periods; and obtaining the transmission line tower inclination measurement result in the current inclination measurement period based on the overall inclination of the tower in all inclination measurement periods.

[0010] Furthermore, the method for dividing the vibration period window includes:

[0011] For each position point, substitute the inclination data at all times into the autocorrelation function to obtain the autocorrelation function value at each time; arrange the absolute values ​​of the autocorrelation function values ​​at all times in chronological order to obtain the inclination period correlation sequence; obtain all peaks in the inclination period correlation sequence; obtain the average value of the time differences corresponding to all adjacent peaks, and record the rounded-up value of the average value as the vibration period estimation value of each position point;

[0012] The inclination data at all times are evenly divided into a number of vibration cycle windows; the number of inclination data contained in the vibration cycle window is the vibration cycle estimation value.

[0013] Furthermore, the method for obtaining the reference measurement inclination angle of each position point includes: recording the reference measurement inclination angle as , ;in, is the number of vibration cycle windows; and They respectively represent the maximum and minimum values ​​of the inclination angle data in the i-th vibration cycle window.

[0014] Furthermore, the main material inclination degree of each main material is obtained according to the reference measured inclination angles of all positions on each main material and the difference between the reference measured inclination angles of adjacent positions, including:

[0015] For each main material, the position points on the main material are sorted from low to high according to height to obtain a position point sequence; the difference between the reference measured inclination angle of each position point in the position point sequence and its previous position point is recorded as the main material inclination angle increment of each position point; among which, the main material inclination angle increment of the position point with the lowest height is 0;

[0016] The main material inclination degree of the main material is obtained by combining the benchmark measured inclination angles of all position points on the main material and the main material inclination angle increments.

[0017] Furthermore, the benchmark measured inclination angles of all positions on the integrated main material and the main material inclination increments are used to obtain the main material inclination degree of the main material, including: calculating the ratio of the benchmark measured inclination angles of each position point on the main material except the position point with the lowest height to the main material inclination increment; and taking the sum of the ratios of all the position points as the main material inclination degree of the main material.

[0018] Further, the overall inclination of the tower is obtained based on the similarity of the change of the reference measured inclination angles of all positions on different main materials with the height and the inclination degree of the main materials, including:

[0019] Arrange the reference measured inclination angles of all position points on each main material from low to high according to the height of the position points to obtain the main material inclination vector of each main material; for any two main materials, calculate the similarity of the main material inclination vectors of the two main materials;

[0020] According to the similarity of the pairwise combination of all the main materials of the transmission line tower and the inclination degree of the main materials, the overall inclination of the tower is obtained.

[0021] Furthermore, the method for calculating the similarity of the main material tilt vectors of the two main materials includes: taking the sum of the cosine similarity of the main material tilt vectors of the two main materials and a value of 1 as the similarity of the main material tilt vectors of the two main materials.

[0022] Further, the overall inclination of the tower is obtained according to the similarity of the pairwise combination of all the main materials of the transmission line tower and the inclination degree of the main materials, which specifically includes: recording the overall inclination of the tower as , ; Where N represents the number of main materials on the transmission line tower; represents the similarity of the main material tilt vectors of the i-th and j-th main materials; , They represent the degree of inclination of the main material of the i-th and j-th main materials respectively; Represents the maximum value function.

[0023] Further, obtaining the transmission line tower inclination measurement result of the current inclination measurement period according to the overall inclination of the tower in all inclination measurement periods includes:

[0024] The maximum value of the overall inclination of the tower in all inclination measurement periods is used as the tower inclination threshold; if the overall inclination of the tower in the current inclination measurement period is greater than the tower inclination threshold, the transmission line tower in the current inclination measurement period is tilted.

[0025] In the second aspect, an embodiment of the present application also provides a transmission line tower inclination monitoring terminal, comprising a memory, a processor, and a computer program stored in the memory and running on the processor, wherein when the processor executes the computer program, the steps of any one of the above-mentioned transmission line tower inclination monitoring methods are implemented.

[0026] This application has at least the following beneficial effects:

[0027] The present application analyzes the influence of pole tower vibration caused by environmental factors on the measurement of pole tower inclination. First, the periodic law of pole tower vibration is analyzed, and the reference measurement inclination of each position point is calculated according to the inclination data in the vibration period window. By dividing the inclination measurement sequence into multiple vibration period windows for calculation, the influence of the change of pole tower vibration amplitude on the calculation of the overall inclination is reduced, and the accuracy of the calculated reference measurement inclination is improved. Further, according to the change of the inclination of each position point on the main material with the height when the pole tower is tilted, the inclination of the main material is calculated, and the difference between the inclination increments of different main materials is analyzed and amplified to improve the sensitivity of the pole tower inclination monitoring. The overall inclination of the pole tower is obtained by combining the change trend of the reference measurement inclination of all position points on different main materials. By comparing the inclination of different main materials of the pole tower, the influence of the change of the pole tower inclination caused by strong wind on the inclination monitoring is eliminated, and the accuracy of the transmission line tower inclination monitoring is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions and advantages in the embodiments of the present application or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 A flowchart of a method for monitoring the inclination of a transmission line tower provided in one embodiment of the present application;

[0030] Figure 2 A block diagram for obtaining a vibration period estimation value provided by one embodiment of the present application. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. In the absence of conflict, the embodiments of the present application and the technical features in the embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0032] Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0033] The following is a detailed description of a transmission line tower inclination monitoring method and terminal provided by the present application in conjunction with the accompanying drawings.

[0034] See also Figure 1 , which shows a flow chart of a method for monitoring the inclination of a transmission line tower provided by an embodiment of the present application, the method comprising the following steps:

[0035] S1, collecting the inclination data of the position points at different heights on each main material of the transmission line tower at each time during the inclination measurement period.

[0036] A specific implementation scenario of the embodiment of the present application is the transmission line tower tilt monitoring scenario; the tilt degree of the transmission line tower usually develops slowly, and it is necessary to obtain the tilt angle data regularly to analyze the tilt trend of the transmission line tower in continuous time, so as to timely discover the slight tilt of the transmission line tower and perform maintenance in time to prevent the transmission line tower from collapsing. At present, fiber grating tilt sensors are usually used to measure the tilt angle of the transmission line tower and determine its tilt degree.

[0037] Therefore, in this embodiment, a fiber Bragg grating inclination sensor is installed on each main material of the transmission line tower body, wherein M fiber Bragg grating inclination sensors are evenly installed on each main material in sequence from low to high along the height direction, and the inclination data of the main material of the transmission line tower body at the installation position is measured and obtained. In this embodiment, the value of M is 5, and the data acquisition frequency of all fiber Bragg grating inclination sensors is 10 Hz.

[0038] The traditional inclination angle measurement process is easily disturbed by the outdoor environment. For example, the influence of strong wind and rain and other weather conditions will cause the transmission line tower to vibrate due to external forces, which will reduce the accuracy of the transmission line tower inclination condition measurement. Therefore, this embodiment analyzes the interference of environmental factors on the tower inclination angle measurement, eliminates the inclination angle measurement error according to the similarity between the inclination angle data at different positions and the law of the inclination angle data, and obtains a more accurate tower inclination monitoring result.

[0039] S2, dividing the vibration period window according to the periodic distribution of the inclination data of each position point at all times; and obtaining the reference measurement inclination angle of each position point according to the numerical fluctuation amplitude of the inclination data in all vibration period windows of each position point.

[0040] The transmission line tower is affected by strong outdoor winds and will vibrate at a certain frequency, usually with periodic characteristics. In order to eliminate the influence of the transmission line tower vibration on the calculation of its overall inclination, it is necessary to analyze the periodic changes of the vibration at different positions of the tower body main material and extract the inclination of the transmission line tower from it.

[0041] In this embodiment, in order to extract the periodic characteristics of the tower vibration, the inclination data of K moments continuously collected by the fiber Bragg grating inclination sensor at each position is first obtained, and the short-term vibration and inclination of the main material of the tower body at each position are further analyzed. In the present invention, the value of K is 100. For each position point, the inclination data at all moments are substituted into the autocorrelation function to obtain the autocorrelation function value at each moment. The autocorrelation function can identify the periodicity of the time series through the peak value. Specifically, due to the symmetry of the autocorrelation function of the inclination measurement sequence, the absolute values ​​of the autocorrelation function values ​​at all moments are arranged in chronological order to obtain the inclination period correlation sequence, which reflects the periodic changes of the tower vibration at the installation position of the fiber Bragg grating inclination sensor.

[0042] Secondly, since the vibration period of the transmission line tower is relatively stable in a short period of time, the peak interval of the autocorrelation sequence of its inclination measurement sequence can be used to represent the period of tower vibration. Therefore, the divide-and-conquer method is used to obtain all peaks in the inclination period correlation sequence; the average value of the time difference corresponding to all adjacent peaks is obtained, and the rounded-up value of the average value is recorded as the vibration period estimate. The time difference corresponding to the adjacent peaks is the absolute value of the difference between the times corresponding to the adjacent peaks.

[0043] The estimated value of the vibration period reflects the size of the vibration period of the transmission line tower under the inclination measurement sequence. By calculating the autocorrelation function of the inclination data, the periodic characteristics can be identified through the autocorrelation of the time series to improve the accuracy of obtaining the tower vibration period.

[0044] In order to further eliminate the error value caused by the tower vibration during the inclination measurement process, this embodiment extracts the inclination angle caused by the tower vibration through the periodic characteristics of the inclination period related sequence. The vibration of the transmission line tower causes the measured inclination angle to float periodically around the overall inclination angle. Therefore, in this embodiment, the inclination data at all times are evenly divided into several vibration period windows; the number of inclination data contained in the vibration period window is the vibration period estimate; in particular, if there is excess inclination data that is not enough to be divided into a vibration period window, this part of the data is eliminated. According to the numerical fluctuation amplitude of the inclination data in all vibration period windows of each position point, the benchmark measurement inclination angle of each position point is obtained. The benchmark measurement inclination angle reflects the overall inclination angle of the transmission line tower caused by strong wind after eliminating the vibration factor at the installation position of the inclination sensor.

[0045] In this embodiment, the reference measurement inclination angle is recorded as , the calculation formula is:

[0046]

[0047] in, is the number of vibration cycle windows; and They respectively represent the maximum and minimum values ​​of the inclination angle data in the i-th vibration cycle window.

[0048] The inclination data measured at each position of the transmission line tower vibrates periodically near the reference measurement inclination, so the overall inclination of the tower caused by strong wind is calculated using half of the difference between the maximum inclination data and the minimum inclination data in the vibration cycle window. By dividing the inclination measurement sequence into multiple vibration cycle windows and calculating the average of the overall inclination in different vibration cycle windows, the impact of the change in the vibration amplitude of the tower on the calculation of the overall inclination is reduced, the accuracy of the calculation of the reference measurement inclination is improved, and the large amplitude vibration caused by strong outdoor winds can be avoided, which will cause false alarms in the tower tilt monitoring terminal.

[0049] The block diagram for obtaining the estimated value of the vibration period is as follows: Figure 2 shown.

[0050] S3, according to the reference measurement inclination angle of all position points on each main material and the difference of the reference measurement inclination angle of adjacent position points, the main material inclination degree of each main material is obtained; according to the similarity of the reference measurement inclination angle of all position points on different main materials changing with height and the main material inclination degree, the overall inclination of the tower is obtained.

[0051] Strong winds exert different moments on the transmission line tower at different heights, causing the same main material to tilt at different heights due to deformation caused by strong winds. At the same time, the vibration of the transmission line at the top of the transmission line tower will increase the tilt at the top of the tower. Therefore, the higher the installation height of the inclination sensor on the same main material, the greater the tilt caused by the height, and the greater the calculated reference measurement inclination.

[0052] In order to obtain the changing trend of the benchmark measured inclination angle of the tower body main material, for each main material, the position points on the main material are sorted from low to high according to height to obtain a position point sequence; the absolute value of the difference between the benchmark measured inclination angle of each position point in the position point sequence and its previous position point is recorded as the main material inclination angle increment of each position point; among which, the main material inclination angle increment of the position point with the lowest height is 0.

[0053] Under normal circumstances, due to the difference in torque, the higher the position of the main material of the transmission line tower, the greater the change in the benchmark measurement inclination angle. When the geology of the area where the transmission line tower is located changes, the tower base sinks sideways and settles unevenly, and the main material of the tower body tilts as a whole, the benchmark measurement inclination angle and its changes at different height positions of the tower main material tend to be consistent, and the influence of the main material inclination increment caused by strong wind on the overall main material inclination is reduced. Therefore, the benchmark measurement inclination angle and the main material inclination increment of all positions on the main material are combined to obtain the main material inclination degree of the main material.

[0054] Specifically, for each main material, the ratio of the reference measured inclination angle of each position point on the main material except the position point with the lowest height to the main material inclination angle increment is calculated; and the sum of the ratios of all the position points is taken as the main material inclination degree of the main material.

[0055] When the transmission line tower tilts as a whole due to tower foundation settlement and other reasons, the changes in the reference measured inclination angles of the inclination sensors at different heights of the tower main material tend to be consistent, the inclination angle caused by the deformation of the tower body due to strong wind has less influence on the overall main material inclination, and the main material inclination increments of the inclination sensors at various positions decrease, indicating that the probability of the tower main material tilting as a whole due to geological changes is relatively high at this time; at the same time, the greater the reference measured inclination angles of the inclination sensors at various heights of the tower main material, the greater the overall inclination of the main material, the greater the corresponding calculated main material inclination, and the greater the overall inclination of all parts of the main material.

[0056] As another embodiment of the present application, the main material inclination degree of the main material can be recorded as , ; Wherein, M represents the number of position points on the main material; represents the reference measurement inclination angle of the i-th position point on the main material; exp() represents an exponential function with a natural constant as the base; It represents the main material inclination increment at the i-th position on the main material. Among them, due to geological changes, the overall inclination of the tower is small in the early stage. When the main material inclination increment of the inclination sensors at different heights changes little, the exponential function can be used to amplify the difference between the inclination increments of different main materials to improve the sensitivity of early tower inclination monitoring.

[0057] Due to the spacing between the main materials of the transmission line tower, under normal circumstances, the changes in the degree of inclination of different main materials at different heights under strong winds will be different. The inclination degree of the main materials on the windward side will change greatly at each height, while the change of the main materials on the leeward side will be smaller. When the bottom of the transmission line tower tilts, the tower as a whole tilts in the same direction, and the inclination degrees of different main materials at different heights will tend to be consistent, reflecting that the probability of the tower base tilting is high at this time. Therefore, the probability of the tower base tilting can be judged based on the difference in the inclination trends of all positions on different main materials.

[0058] Specifically, the reference measured inclination angles of all position points on each main material are arranged from low to high according to the position point heights to obtain the main material inclination vector of each main material; for any two main materials, the similarity of the main material inclination vectors of the two main materials is calculated.

[0059] It should be noted that the similarity of two vectors represents the similarity of the numerical change trends of the two vectors. This embodiment uses cosine similarity to represent it, and considering that the value range of cosine similarity is [-1,1], in order to facilitate subsequent analysis, the sum of the cosine similarity of the main material tilt vectors of the two main materials and the value 1 is used as the similarity of the main material tilt vectors of the two main materials. As other embodiments of the present application, the Pearson correlation coefficient between two vectors can be used to calculate the similarity, and this application does not limit it.

[0060] When the reference measured inclination angles of two main materials at the same height are closer, and the difference in the changing trend of the reference measured inclination angles at different heights is smaller, the similarity of the main material inclination vectors is greater, indicating that the inclination degrees of the two main materials are closer, reflecting the greater the probability of the tower base being tilted. By comparing the inclination degrees of different main materials of the tower, the influence of the tower deformation caused by strong wind on the tilt monitoring is eliminated. Specifically, the overall inclination of the tower is recorded as , ; Where N represents the number of main materials on the transmission line tower; represents the similarity of the main material tilt vectors of the i-th and j-th main materials; , They represent the degree of inclination of the main material of the i-th and j-th main materials respectively; Represents the maximum value function.

[0061] Among them, the closer the inclination of different main materials of the transmission line tower is, the greater the probability of the tower base being tilted, the greater the difference in the inclination of the main materials, and the greater the calculated inclination of the tower. On the other hand, when the similarity of different main materials of the tower is greater, the greater the overall inclination of the transmission line tower, the greater the calculated inclination of the tower.

[0062] S4, continuously obtaining the overall inclination of the tower in a preset number of inclination measurement periods; and obtaining the transmission line tower inclination measurement result in the current inclination measurement period based on the overall inclination of the tower in all inclination measurement periods.

[0063] The calculation of the overall inclination of the tower eliminates the interference of environmental factors that cause the tower to vibrate and cause interference to the tower inclination measurement, which represents a relatively accurate tower inclination measurement result over a period of time. Through the calculation method of the tower inclination in the above steps, the overall inclination of the tower in W inclination measurement periods is continuously obtained. In the present invention, W is taken as 1000, and the largest tower inclination is recorded as the tower inclination threshold. If the overall inclination of the tower in the current inclination measurement period is greater than the tower inclination threshold, the transmission line tower in the current inclination measurement period is tilted. An alarm is issued on the PC monitoring interface to prompt the maintenance personnel to inspect the transmission line tower and complete the inclination monitoring of the transmission line tower.

[0064] Based on the same inventive concept as the above method, an embodiment of the present application also provides a transmission line pole tower inclination monitoring terminal, including a memory, a processor, and a computer program stored in the memory and running on the processor. When the processor executes the computer program, the steps of any one of the above-mentioned transmission line pole tower inclination monitoring methods are implemented.

[0065] Through the above description of the implementation method in combination with the accompanying drawings, technical personnel in the relevant field can understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0066] The above contents are only specific implementation methods of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be covered by the protection scope of the present application.

Claims

1. A method for monitoring the inclination of a transmission line tower, characterized in that: The method comprises the following steps: S1, collecting the inclination data of the position points at different heights on each main material of the transmission line tower at each time during the inclination measurement period; S2, dividing the vibration period window according to the periodic distribution of the inclination data at all times of each position point; obtaining the reference measurement inclination angle of each position point according to the numerical fluctuation amplitude of the inclination data in all vibration period windows of each position point; S3, according to the reference measurement inclination angle of all position points on each main material and the difference of the reference measurement inclination angle of adjacent position points, the main material inclination degree of each main material is obtained; according to the similarity of the reference measurement inclination angle of all position points on different main materials changing with height and the main material inclination degree, the overall inclination of the tower is obtained; S4, continuously obtaining the overall inclination of the tower in a preset number of inclination measurement periods; obtaining the transmission line tower inclination measurement result in the current inclination measurement period according to the overall inclination of the tower in all inclination measurement periods; The method for dividing the vibration period window comprises: For each position point, substitute the inclination data at all times into the autocorrelation function to obtain the autocorrelation function value at each time; arrange the absolute values ​​of the autocorrelation function values ​​at all times in chronological order to obtain the inclination period correlation sequence; obtain all peaks in the inclination period correlation sequence; obtain the average value of the time differences corresponding to all adjacent peaks, and record the rounded-up value of the average value as the vibration period estimation value of each position point; The inclination data at all times are evenly divided into a number of vibration cycle windows; the number of inclination data contained in the vibration cycle window is the vibration cycle estimation value.

2. A transmission line tower tilt monitoring method according to claim 1, characterized in that: The method for obtaining the reference measurement inclination angle of each position point includes: recording the reference measurement inclination angle as , ;in, is the number of vibration cycle windows; and They respectively represent the maximum and minimum values ​​of the inclination angle data in the i-th vibration cycle window.

3. A transmission line tower tilt monitoring method according to claim 1, characterized in that: The method of obtaining the main material inclination degree of each main material according to the reference measured inclination angles of all positions on each main material and the difference between the reference measured inclination angles of adjacent positions includes: For each main material, the position points on the main material are sorted from low to high according to height to obtain a position point sequence; the difference between the reference measured inclination angle of each position point in the position point sequence and its previous position point is recorded as the main material inclination angle increment of each position point; among which, the main material inclination angle increment of the position point with the lowest height is 0; The main material inclination degree of the main material is obtained by combining the benchmark measured inclination angles of all position points on the main material and the main material inclination angle increments.

4. A transmission line tower tilt monitoring method as claimed in claim 3, characterized in that: The main material inclination degree of the main material is obtained by integrating the benchmark measured inclination angles of all positions on the main material and the main material inclination increment, including: calculating the ratio of the benchmark measured inclination angle of each position point except the position point with the lowest height on the main material to the main material inclination increment; and taking the sum of the ratios of all the positions as the main material inclination degree of the main material.

5. A transmission line tower tilt monitoring method as claimed in claim 1, characterized in that: The overall inclination of the tower is obtained based on the similarity of the change of the reference measurement inclination angle of all positions on different main materials with the height and the inclination degree of the main materials, including: Arrange the reference measured inclination angles of all position points on each main material from low to high according to the height of the position points to obtain the main material inclination vector of each main material; for any two main materials, calculate the similarity of the main material inclination vectors of the two main materials; According to the similarity of the pairwise combination of all the main materials of the transmission line tower and the inclination degree of the main materials, the overall inclination of the tower is obtained.

6. A transmission line tower tilt monitoring method as claimed in claim 5, characterized in that: The method for calculating the similarity of the main material tilt vectors of two main materials includes: taking the sum of the cosine similarity of the main material tilt vectors of the two main materials and a value of 1 as the similarity of the main material tilt vectors of the two main materials.

7. A transmission line tower tilt monitoring method as claimed in claim 5, characterized in that: The method of obtaining the overall inclination of the tower according to the similarity of the pairwise combination of all the main materials of the transmission line tower and the inclination degree of the main materials specifically includes: recording the overall inclination of the tower as , ; Where N represents the number of main materials on the transmission line tower; represents the similarity of the main material tilt vectors of the i-th and j-th main materials; , They represent the degree of inclination of the main material of the i-th and j-th main materials respectively; Represents the maximum value function.

8. A transmission line tower tilt monitoring method according to claim 1, characterized in that: The step of obtaining the transmission line tower inclination measurement result in the current inclination measurement period according to the overall inclination of the tower in all inclination measurement periods includes: The maximum value of the overall inclination of the tower in all inclination measurement periods is used as the tower inclination threshold; if the overall inclination of the tower in the current inclination measurement period is greater than the tower inclination threshold, the transmission line tower in the current inclination measurement period is tilted.

9. A transmission line tower tilt monitoring terminal, comprising a memory, a processor, and a computer program stored in the memory and running on the processor, characterized in that: When the processor executes the computer program, the steps of a transmission line tower inclination monitoring method as described in any one of claims 1-8 are implemented.

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