External force damage monitoring system based on millimeter wave radar

Abstract

The invention relates to the technical field of overhead line monitoring systems, and provides a millimeter wave radar-based external force damage monitoring system, which comprises a monitoring level setting terminal, an overhead line monitoring data acquisition terminal, a monitoring data analysis terminal and an external force damage alarm terminal, the monitoring level setting terminal is used for performing risk assessment according to the operation condition of the overhead line and setting a monitoring level according to a risk assessment result; the overhead line monitoring data acquisition terminal is used for acquiring monitoring data of the corresponding overhead line after deployment monitoring according to the monitoring level; the monitoring data analysis terminal is used for analyzing according to the monitoring data and generating data analysis information; the external force damage alarm terminal is used for generating external force damage alarm information according to the data analysis information. The method has the effect of improving the monitoring quality of the system on the overhead line.

Description

Technical Field

[0001] The invention relates to the technical field of overhead line monitoring systems, and in particular to an external force damage monitoring system based on millimeter wave radar. Background Art

[0002] The external force damage monitoring system for overhead lines is a system specially designed to monitor in real time whether overhead power lines are damaged by external forces. External force damage may come from natural factors such as storms, fallen trees or human factors such as construction. The goal of this system is to quickly detect and locate the damage point so that repair measures can be taken in time to ensure the stable operation of the power system. Millimeter wave monitoring technology is a technology that uses millimeter wave electromagnetic waves for detection and monitoring. Due to its high frequency and short wavelength, millimeter wave monitoring technology has the characteristics of high resolution, good penetration ability and environmental adaptability, and is widely used in many fields, including security monitoring, traffic management, medical imaging, industrial detection and communications.

[0003] Now many overhead line monitoring systems have been developed. After a lot of searching and reference, we found that the overhead line monitoring systems in the prior art are such as the overhead line monitoring systems disclosed in the publication numbers CN112952650A, CN116008724A, CN111404273A, EP2621753A2, and US20090243876A1. These overhead line monitoring systems generally include: an overhead line installation environment data acquisition terminal, a data analysis terminal, and a monitoring information output terminal; the overhead line installation environment data acquisition terminal is used to acquire the overhead line installation environment data from the monitoring equipment installed at the overhead line site; the data analysis terminal is used to perform data analysis based on the overhead line installation environment data; and the monitoring information output terminal is used to output monitoring information based on the data analysis results. Since the monitoring mode of the above-mentioned overhead line monitoring system is relatively single, it is not conducive to monitoring overhead lines of different sizes, resulting in the defect that the monitoring quality of the system for monitoring overhead lines is reduced. Summary of the invention

[0004] The purpose of the present invention is to propose an external force damage monitoring system based on millimeter wave radar in view of the shortcomings of the above overhead line monitoring system.

[0005] The present invention adopts the following technical solution:

[0006] A millimeter wave radar-based external force damage monitoring system includes a monitoring level setting terminal, an overhead line monitoring data acquisition terminal, a monitoring data analysis terminal and an external force damage alarm terminal; the monitoring level setting terminal is used to perform risk assessment according to the operation of the overhead line and set the monitoring level according to the risk assessment result; the overhead line monitoring data acquisition terminal is used to obtain the monitoring data of the corresponding overhead line after the deployment monitoring according to the monitoring level; the monitoring data analysis terminal is used to analyze according to the monitoring data and generate data analysis information; the external force damage alarm terminal is used to generate external force damage alarm information according to the data analysis information;

[0007] The monitoring level setting terminal includes an operation status information acquisition module, a risk assessment module and a monitoring level setting module; the operation status information acquisition module is used to obtain the operation status information of the overhead line input by the administrator; the risk assessment module is used to generate risk assessment information based on the operation status information; the monitoring level setting module is used to set the monitoring level for the overhead line based on the risk assessment information.

[0008] Optionally, the overhead line monitoring data acquisition terminal includes a pole tower monitoring data acquisition module, a line environment monitoring data acquisition module, a millimeter wave radar monitoring data acquisition module and a meteorological monitoring data acquisition module; the pole tower monitoring data acquisition module is used to acquire the pole tower monitoring data of the overhead line; the line environment monitoring data acquisition module is used to acquire the environmental monitoring data at the monitoring point of the overhead line; the millimeter wave radar monitoring data acquisition module is used to acquire the millimeter wave radar monitoring data at the monitoring point of the overhead line; the meteorological monitoring data acquisition module is used to acquire the meteorological monitoring data of the area where the overhead line is located.

[0009] Optionally, the monitoring data analysis terminal includes a pole tower data analysis module, a monitoring point monitoring data analysis module, a breath monitoring data analysis module and a data analysis information generation module; the pole tower data analysis module is used to perform analysis based on the pole tower monitoring data to generate pole tower monitoring and analysis data; the monitoring point monitoring data analysis module is used to perform analysis based on the environmental monitoring data and the millimeter wave radar monitoring data to generate the monitoring point monitoring and analysis data; the breath monitoring data analysis module is used to perform analysis based on the meteorological monitoring data to generate the meteorological monitoring and analysis data; the data analysis information generation module is used to generate data analysis information based on the pole tower monitoring and analysis data, the monitoring point monitoring and analysis data and the meteorological monitoring and analysis data.

[0010] Optionally, the risk assessment module includes a risk index calculation submodule and a risk assessment information generation submodule, wherein the risk index calculation submodule is used to calculate the risk index according to the operation status information; and the risk assessment information generation submodule is used to generate risk assessment information according to the risk index.

[0011] A method for monitoring external force damage based on millimeter wave radar, applied to a system for monitoring external force damage based on millimeter wave radar as claimed in claim 4, the method for monitoring external force damage based on millimeter wave radar comprising:

[0012] S1, conduct risk assessment based on the operation of overhead lines and set monitoring levels based on the risk assessment results;

[0013] S2, obtaining monitoring data of the corresponding overhead line after deployment monitoring according to the monitoring level;

[0014] S3, analyzing the monitoring data and generating data analysis information;

[0015] S4, generating external force damage alarm information based on the data analysis information.

[0016] The beneficial effects achieved by the present invention are:

[0017] 1. The setting of monitoring level setting terminal, overhead line monitoring data acquisition terminal, monitoring data analysis terminal and external force damage alarm terminal. By setting the monitoring level of the overhead line before monitoring and then laying the monitoring, it is beneficial to improve the adaptability of the system to monitor various overhead lines. Finally, the independent working process of data acquisition, data analysis and alarm is beneficial to improve the monitoring adaptability and accuracy of the system to monitor different overhead lines, thereby improving the monitoring quality of the system to monitor overhead lines;

[0018] 2. The setting of the operation information acquisition module, risk assessment module and monitoring level setting module, which generates risk assessment information from the operation information of the overhead line input by the administrator and then sets the monitoring level for the overhead line, improves the efficiency and accuracy of setting the monitoring level, and is more conducive to improving the monitoring quality of the system for different overhead lines;

[0019] 3. The setting of the tower monitoring data acquisition module, the line environment monitoring data acquisition module, the millimeter wave radar monitoring data acquisition module and the meteorological monitoring data acquisition module improves the efficiency and stability of the system's multi-dimensional data acquisition through the synchronous acquisition of the tower monitoring data, the environmental monitoring data, the millimeter wave radar monitoring data and the meteorological monitoring data, which is conducive to improving the quality of monitoring data acquisition, thereby improving the monitoring quality of the system for monitoring different overhead lines;

[0020] 4. The tower data analysis module, monitoring point monitoring data analysis module, air monitoring data analysis module and data analysis information generation module are set up to generate tower monitoring analysis data, monitoring point monitoring analysis data and meteorological monitoring analysis data through multi-dimensional analysis, thereby generating more accurate and comprehensive data analysis information. The accuracy of the data analysis process is improved through rich analysis modes, which is conducive to improving the monitoring quality of the system for monitoring different overhead lines;

[0021] 5. The risk index calculation submodule and the risk assessment information generation submodule are set up in conjunction with the risk index calculation algorithm. The risk index is calculated through the operation information, which is conducive to improving the accuracy of the risk index and risk assessment information, thereby improving the monitoring quality of the system for monitoring different overhead lines;

[0022] 6. The setting of the external force damage alarm module and the alarm information output module at the monitoring point is coordinated with the external force damage risk index algorithm at the monitoring point. Calculating the external force damage risk index at the monitoring point through data analysis information is beneficial to improving the accuracy of the external force damage risk index at the monitoring point and the external force damage alarm information at the monitoring point, thereby helping to improve the monitoring quality of the system for different overhead lines.

[0023] To further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings provided are only for reference and description and are not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the structure of the risk assessment module in the present invention;

[0026] Figure 3 A schematic diagram of a method flow of an external force damage monitoring method based on millimeter wave radar in the present invention;

[0027] Figure 4 It is a structural schematic diagram of an external force damage alarm terminal in another embodiment of the present invention;

[0028] Figure 5 Schematic diagram of the process flow of data fusion step in another embodiment of the present invention. DETAILED DESCRIPTION

[0029] The following is an explanation of the embodiments of the present invention through specific embodiments. Those skilled in the art can understand the advantages and effects of the present invention from the contents disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and the details in this specification can also be modified and changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. In addition, the drawings of the present invention are only simple schematic illustrations and are not depicted according to actual dimensions. It is stated in advance. The following embodiments will further explain the relevant technical contents of the present invention in detail, but the disclosed contents are not intended to limit the scope of protection of the present invention.

[0030] Embodiment 1: This embodiment provides an external force damage monitoring system based on millimeter wave radar. Figure 1 As shown, a millimeter wave radar-based external force damage monitoring system includes a monitoring level setting terminal, an overhead line monitoring data acquisition terminal, a monitoring data analysis terminal and an external force damage alarm terminal; the monitoring level setting terminal is used to perform risk assessment according to the operation of the overhead line and set the monitoring level according to the risk assessment result; the overhead line monitoring data acquisition terminal is used to obtain the monitoring data of the corresponding overhead line after the deployment monitoring according to the monitoring level; the monitoring data analysis terminal is used to analyze according to the monitoring data and generate data analysis information; the external force damage alarm terminal is used to generate external force damage alarm information according to the data analysis information;

[0031] The monitoring level setting terminal includes an operation status information acquisition module, a risk assessment module and a monitoring level setting module; the operation status information acquisition module is used to obtain the operation status information of the overhead line input by the administrator; the risk assessment module is used to generate risk assessment information based on the operation status information; the monitoring level setting module is used to set the monitoring level for the overhead line based on the risk assessment information.

[0032] Optionally, the overhead line monitoring data acquisition terminal includes a pole tower monitoring data acquisition module, a line environment monitoring data acquisition module, a millimeter wave radar monitoring data acquisition module and a meteorological monitoring data acquisition module; the pole tower monitoring data acquisition module is used to acquire the pole tower monitoring data of the overhead line; the line environment monitoring data acquisition module is used to acquire the environmental monitoring data at the monitoring point of the overhead line; the millimeter wave radar monitoring data acquisition module is used to acquire the millimeter wave radar monitoring data at the monitoring point of the overhead line; the meteorological monitoring data acquisition module is used to acquire the meteorological monitoring data of the area where the overhead line is located.

[0033] Optionally, the monitoring data analysis terminal includes a tower data analysis module, a monitoring point monitoring data analysis module, a breath monitoring data analysis module, and a data analysis information generation module; the tower data analysis module is used to analyze tower monitoring data and generate tower monitoring analysis data; the monitoring point monitoring data analysis module is used to analyze environmental monitoring data and millimeter wave radar monitoring data and generate monitoring point monitoring analysis data; the breath monitoring data analysis module is used to analyze meteorological monitoring data and generate meteorological monitoring analysis data; the data analysis information generation module is used to generate data analysis information based on the tower monitoring analysis data, the monitoring point monitoring analysis data, and the meteorological monitoring analysis data.

[0034] Optionally, in combination with Figure 2 As shown, the risk assessment module includes a risk index calculation sub-module and a risk assessment information generation sub-module. The risk index calculation sub-module is used to calculate the risk index according to the operation condition information; the risk assessment information generation sub-module is used to generate risk assessment information based on the risk index.

[0035] Specifically, when the risk index calculation sub-module is working, the following formula is satisfied:

[0036] risk = lg|H1 - H2|×[k1×f(H3)+k2×L1 + k3×f(kind)+k4×L2];

[0037]

[0038] Among them, risk represents the risk index of the overhead line; H1 and H2 respectively represent the maximum altitude and the reference altitude of the location where the overhead line is located; k1, k2, k3, and k4 respectively represent different score conversion weight coefficients, and the sum of k1, k2, k3, and k4 is 1. Generally, k1, k2, k3, and k4 are 0.3, 0.2, 0.2, and 0.3 respectively; f(H3) represents a score selection function based on the maximum height of the tower of the overhead line; H3 represents the maximum height of the tower of the overhead line; L1 represents the total length of the cable of the overhead line; f(kind) represents a value selection function based on the number of types of terrain crossed by the overhead line; kind represents the number of types of terrain crossed by the overhead line; L2 represents the distance between the overhead line and the power station; when risk ≥ R, the risk assessment information generation sub-module generates risk assessment information indicating that the risk exceeds the standard; when risk < R, the risk assessment information generation sub-module generates risk assessment information indicating that the risk does not exceed the standard; R represents the risk threshold, which is set by the administrator according to experience.

[0039] When the monitoring level setting module is working, the following formula is satisfied:

[0040]

[0041] Among them, level(risk) represents the monitoring level confirmation function based on the risk index; R represents the risk threshold; δ represents the level confirmation threshold, which is set by the administrator based on experience, δ≥2R. When level(risk)=1, the monitoring level is 1, and two monitoring points are set during deployment, which are the highest point of the initial tower and the midpoint of the overhead line; when level(risk)=2, the monitoring level is 2, and three monitoring points are set during deployment, which are the highest point of the initial tower, the midpoint of the overhead line, and the highest point of the last tower; when level(risk)=3, the monitoring level is 3, and seven monitoring points are set during deployment, which are the highest point of the initial tower, the midpoint of the overhead line, the highest point of the last tower, two positions evenly distributed between the initial tower and the midpoint, and two positions evenly distributed between the last tower and the midpoint. Before monitoring the overhead line, the administrator first establishes the monitoring points and completes the advance deployment according to the calculated monitoring level and its corresponding deployment form, so as to obtain the monitoring data of the corresponding monitoring points during the monitoring process. Each monitoring point is equipped with millimeter wave monitoring equipment, visible light monitoring equipment and meteorological monitoring equipment.

[0042] To sum up, the setting of the above system is conducive to improving the adaptability of the system to monitor various overhead lines by setting the monitoring level of the overhead lines before monitoring, and then laying out the monitoring. Finally, the independent working process of data acquisition, data analysis and alarm is conducive to improving the monitoring adaptability and accuracy of the system to monitor different overhead lines; the method of generating risk assessment information from the operating information of the overhead lines input by the administrator and then setting the monitoring level for the overhead lines improves the efficiency and accuracy of setting the monitoring level; the efficiency and stability of the system's multi-dimensional data acquisition are improved by synchronously acquiring tower monitoring data, environmental monitoring data, millimeter wave radar monitoring data and meteorological monitoring data, which is conducive to improving the quality of monitoring data acquisition; tower monitoring and analysis data, monitoring point monitoring and analysis data and meteorological monitoring and analysis data are generated through multi-dimensional analysis, thereby generating more accurate and comprehensive data analysis information, and improving the accuracy of the data analysis process through rich analysis modes; calculating the risk index through operating information is conducive to improving the accuracy of the risk index and risk assessment information, thereby helping to improve the monitoring quality of the system for monitoring different overhead lines.

[0043] A method for monitoring external force damage based on millimeter wave radar, applied to a system for monitoring external force damage based on millimeter wave radar as claimed in claim 4, combined with Figure 3 As shown, the external force damage monitoring method based on millimeter wave radar includes:

[0044] S1, conduct risk assessment based on the operation of overhead lines and set monitoring levels based on the risk assessment results;

[0045] S2, obtaining monitoring data of the corresponding overhead line after deployment monitoring according to the monitoring level;

[0046] S3, analyzing the monitoring data and generating data analysis information;

[0047] S4, generating external force damage alarm information based on the data analysis information.

[0048] Embodiment 2: This embodiment includes all the contents of Embodiment 1, and provides an external force damage monitoring system based on millimeter wave radar, combined with Figure 4 As shown, the external force damage alarm terminal includes a monitoring point external force damage alarm module and an alarm information output module; the monitoring point external force damage alarm module is used to calculate the monitoring point external force damage risk index based on the data analysis information, and then generate the monitoring point external force damage alarm information based on the monitoring point external force damage risk index; the alarm information output module is used to output the monitoring point external force damage alarm information and send it to the administrator's mobile terminal or monitoring terminal.

[0049] Specifically, when the monitoring point external force damage alarm module calculates the monitoring point external force damage risk index, the following formula is satisfied:

[0050]

[0051] Among them, R1 represents the external force damage risk index of the monitoring point; D ref Indicates safe distance, which is set by the administrator based on experience; D radar Indicates the relative distance value of the nearest target object monitored by the millimeter-wave radar at the corresponding monitoring point; the nearest target object monitored by the millimeter-wave radar refers to the target object closest to the millimeter-wave radar among all the target objects monitored by the millimeter-wave radar; D vision Indicates the relative distance value of the nearest target object monitored by the visible light monitoring device at the corresponding monitoring point; the nearest target object monitored by the visible light monitoring device refers to the target object closest to the visible light monitoring device among all the target objects monitored by the visible light monitoring device; w radar and w vision They represent the radar monitoring weight and visible light device monitoring weight respectively, which are set by the administrator according to the actual situation. For example, in general, w radar and w vision 0.5 and 0.5 respectively. Under good lighting conditions during the day, w radar and w vision 0.4 and 0.6 respectively. At night or in bad weather, w radarand w vision 0.8 and 0.2 respectively;

[0052] r radar 、r vision and r environment They represent the millimeter-wave radar monitoring risk index, image recognition risk index and meteorological risk index of the corresponding monitoring point respectively; d a represents the relative distance of the ath target object among all the target objects monitored by the millimeter wave radar; d max Indicates the maximum allowable distance of millimeter-wave radar monitoring, which is set by the administrator based on experience. Generally, d max Set to 20; v a represents the moving speed of the ath target object among all the target objects monitored by the millimeter-wave radar; v max Indicates the maximum allowed moving speed value of millimeter wave radar monitoring, which is set by the administrator based on experience. Generally, v max Set to 10; I a represents the reflection intensity of the ath target object among all the target objects monitored by the millimeter wave radar; I max It indicates the maximum allowable reflection intensity of the millimeter-wave radar monitoring, which is set by the administrator based on experience; A indicates the total number of all target objects monitored by the millimeter-wave radar; s b represents the volume of the bth target object among all the target objects monitored by the visible light monitoring device; s max Indicates the maximum allowable volume monitored by the visible light monitoring device, which is set by the administrator based on experience; B indicates the total number of all target objects monitored by the visible light monitoring device; E indicates the meteorological risk level, which is pre-set by the administrator based on meteorological conditions. For example, the meteorological risk level is level 1 on sunny and cloudy days, E=1; the meteorological risk level is level 2 on rainy days, E=2; the meteorological risk level is level 3 on typhoon weather and snow, E=3; u max Indicates the maximum allowable visibility monitored by the meteorological monitoring equipment, which is set by the administrator based on experience; u current Indicates the real-time visibility monitored by meteorological monitoring equipment;

[0053] When R1≥M1, the monitoring point external force damage alarm module generates monitoring point external force damage alarm information indicating that the corresponding monitoring point's monitoring point external force damage risk exceeds the standard, which is used to serve as a timely alarm so that the administrator can arrange maintenance work for the monitoring point in time; M1 represents the monitoring point external force damage alarm threshold, which is set by the administrator based on experience.

[0054] To sum up, the setting of the external force damage alarm module and the alarm information output module of the monitoring point, in conjunction with the external force damage risk index algorithm of the monitoring point, and the calculation of the external force damage risk index of the monitoring point through data analysis information are beneficial to improving the accuracy of the external force damage risk index of the monitoring point and the external force damage alarm information of the monitoring point, thereby helping to improve the monitoring quality of the system for monitoring different overhead lines.

[0055] It should be noted that The calculation belongs to the data fusion calculation formula, combined with Figure 5 As shown, the monitoring point external force damage alarm module needs to perform the following steps during calculation:

[0056] A1, Data synchronization: When each sensor collects data, it records the precise timestamp, and performs time alignment on the data of millimeter wave radar and visible light monitoring equipment image recognition to ensure that the data from different sensors at the same time are matched together;

[0057] A2, Coordinate system conversion: When installing the sensor, calibrate the sensor to obtain the installation position and angle of each sensor relative to the fixed reference point. Based on the calibration results, calculate the coordinate transformation matrix of the millimeter wave radar and image recognition, and convert the data of the millimeter wave radar and image recognition into the same coordinate system;

[0058] A3, data matching: preliminary matching of millimeter wave radar and image recognition data is performed based on distance and angle information; for example, data points with distance and angle differences within a certain range are considered to be the same target; further matching is performed by combining more features, such as the size and shape of the target, to improve the accuracy of matching;

[0059] A4, data fusion, uses data fusion calculation formula to perform data fusion.

[0060] The contents disclosed above are only preferred feasible embodiments of the present invention, and do not limit the protection scope of the present invention. Therefore, all equivalent technical changes made using the contents of the present invention description and drawings are included in the protection scope of the present invention. In addition, the elements therein can be updated as technology develops.

Claims

1. An external force damage monitoring system based on millimeter wave radar, characterized in that: It includes a monitoring level setting terminal, an overhead line monitoring data acquisition terminal, a monitoring data analysis terminal and an external force damage alarm terminal; the monitoring level setting terminal is used to perform risk assessment according to the operation of the overhead line and set the monitoring level according to the risk assessment result; the overhead line monitoring data acquisition terminal is used to obtain the monitoring data of the corresponding overhead line after the deployment monitoring according to the monitoring level; the monitoring data analysis terminal is used to analyze according to the monitoring data and generate data analysis information; The external force damage alarm terminal is used to generate external force damage alarm information according to the data analysis information; The monitoring level setting terminal includes an operation status information acquisition module, a risk assessment module and a monitoring level setting module; the operation status information acquisition module is used to obtain the operation status information of the overhead line input by the administrator; the risk assessment module is used to generate risk assessment information based on the operation status information; the monitoring level setting module is used to set the monitoring level for the overhead line based on the risk assessment information.

2. The millimeter wave radar-based external force damage monitoring system as claimed in claim 1, characterized in that: The overhead line monitoring data acquisition terminal includes a pole tower monitoring data acquisition module, a line environment monitoring data acquisition module, a millimeter wave radar monitoring data acquisition module and a meteorological monitoring data acquisition module; the pole tower monitoring data acquisition module is used to acquire the pole tower monitoring data of the overhead line; the line environment monitoring data acquisition module is used to acquire the environmental monitoring data at the monitoring point of the overhead line; the millimeter wave radar monitoring data acquisition module is used to acquire the millimeter wave radar monitoring data at the monitoring point of the overhead line; the meteorological monitoring data acquisition module is used to acquire the meteorological monitoring data of the area where the overhead line is located.

3. The millimeter wave radar-based external force damage monitoring system as claimed in claim 2, characterized in that: The monitoring data analysis terminal includes a tower data analysis module, a monitoring point monitoring data analysis module, a breath monitoring data analysis module and a data analysis information generation module; the tower data analysis module is used to analyze according to the tower monitoring data and generate tower monitoring analysis data; the monitoring point monitoring data analysis module is used to analyze according to the environmental monitoring data and the millimeter wave radar monitoring data and generate the monitoring point monitoring analysis data; The atmosphere monitoring data analysis module is used to analyze the meteorological monitoring data and generate meteorological monitoring analysis data; the data analysis information generation module is used to generate data analysis information based on the tower monitoring analysis data, the monitoring point monitoring analysis data and the meteorological monitoring analysis data.

4. The millimeter wave radar-based external force damage monitoring system as claimed in claim 3, characterized in that: The risk assessment module includes a risk index calculation submodule and a risk assessment information generation submodule. The risk index calculation submodule is used to calculate the risk index according to the operation status information; the risk assessment information generation submodule is used to generate risk assessment information according to the risk index.

5. A method for monitoring external force damage based on millimeter wave radar, applied to a system for monitoring external force damage based on millimeter wave radar as claimed in claim 4, characterized in that: The external force damage monitoring method based on millimeter wave radar includes: S1, conduct risk assessment based on the operation of overhead lines and set monitoring levels based on the risk assessment results; S2, obtaining monitoring data of the corresponding overhead line after deployment monitoring according to the monitoring level; S3, analyzing the monitoring data and generating data analysis information; S4, generating external force damage alarm information based on the data analysis information.

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