Transmission conductor icing state analysis and early warning method and system based on synthetic aperture radar satellite image

Abstract

The invention discloses a transmission line icing state analysis and early warning method and system based on a synthetic aperture radar satellite image, and belongs to the technical field of radar satellite remote sensing monitoring, and the method comprises the steps: S1, carrying out the data collection of a synthetic aperture radar image of a transmission line monitoring region based on meteorological condition forecasting, and carrying out the data collection; obtaining background data of the power transmission conductor in an uniced state; s2, performing data acquisition and preprocessing based on the synthetic aperture radar satellite image in the icing state of the power transmission line monitoring area to obtain icing data in the icing state of the power transmission line; and S3, performing analysis and early warning based on the background data of the power transmission conductor in the uniced state and the iced data of the power transmission conductor in the iced state. According to the invention, through the SAR satellite imaging technology, rapid power transmission line icing state monitoring and real-time early warning work are carried out, the problem of limited monitoring capability and range of current manual and online monitoring sensors is solved, and new added value is provided in the aspect of power transmission line operation and maintenance.

Description

Technical Field

[0001] The present invention belongs to the technical field of radar satellite remote sensing monitoring, and in particular relates to a method and system for analyzing and warning the icing status of power transmission lines based on synthetic aperture radar satellite images. Background Art

[0002] In recent years, global climate change, especially winter freezing rain, has led to ice coating of transmission lines, which can cause excessive gravity loads on the lines, leading to tower collapses and line breakages. Furthermore, ice coating can easily cause conductor galloping, damaging conductors and other hardware, such as towers, and ultimately causing transmission line failures. Therefore, power grids facing extreme weather events have a significant need for wide-area, real-time monitoring of transmission line conditions.

[0003] Currently, transmission line ice monitoring methods for maintenance include manual inspections, machine inspections, online sensor monitoring, helicopter inspections, and drone inspections. Online sensor monitoring involves installing tension sensors on transmission lines / ground wires to estimate ice thickness based on tension changes. However, these methods suffer from issues such as sensor failure due to icing, the need for power supply, and difficulty in fully covering the entire line. Visible light / infrared cameras are used to capture ice morphology, but due to lighting conditions, the failure rate can reach over 60% at night and during foggy or hazy weather, and it is impossible to quantify ice thickness. Inspection methods such as helicopter inspections, machine inspections, and drone inspections still require on-site manpower and are subject to extreme weather conditions. They are unable to assess transmission lines during large-scale natural disasters such as ice and snow, landslides, earthquakes, floods, and severe storms.

[0004] Currently, the installation of online sensors on transmission lines outside cities accounts for less than 1%. This is mainly because the cost of sensors is relatively high, and the communication costs and equipment maintenance costs in areas outside cities remain high. This makes it difficult to achieve real-time monitoring of ice coverage on transmission lines through manual line inspections, online monitoring and other technologies.

[0005] Synthetic aperture radar satellites actively transmit microwave signals that can penetrate clouds, rain, and snow to image surface objects, enabling real-time monitoring of ice coverage on transmission lines during extreme weather conditions. With the improvement of SAR satellite resolution and the massive expansion of satellite constellations, real-time, wide-area monitoring of ice coverage on transmission lines will be possible in the future, enabling dynamic perception and rapid assessment of global ice risk in transmission corridors. However, there is no literature documenting how to use radar scattering characteristics of iced transmission lines to invert ice thickness and conductor sag after ice coverage. This makes it impossible to effectively assess the ice coverage of transmission lines and provide effective ice warnings, even if SAR satellite data is captured during periods of ice coverage.

[0006] Therefore, it is necessary to design a transmission line icing status analysis and early warning method and system based on synthetic aperture radar satellite images to address the above problems. Summary of the Invention

[0007] The purpose of the present invention is to address the problem of being unable to effectively assess the icing status of transmission lines and provide effective icing warnings. A method for analyzing and warning the icing status of transmission lines based on synthetic aperture radar satellite images is provided. By comparing and analyzing SAR data before and after icing, the attenuation of scattering spot intensity before and after icing and the corresponding distance difference of the conductor scattering arc are obtained, which serve as the basis for evaluating the icing status of transmission lines, and for evaluating and warning the risk of icing status of transmission lines.

[0008] According to one aspect of the present disclosure, a method for analyzing and providing early warning of ice coverage on power transmission lines based on synthetic aperture radar satellite images is provided, comprising: S1. Based on the meteorological condition forecast, data is collected from synthetic aperture radar images of the transmission line monitoring area to obtain background data when the transmission lines are not covered with ice; S2. Based on synthetic aperture radar satellite images of the transmission line monitoring area in an ice-covered state, data collection and preprocessing are performed to obtain ice coverage data of the transmission line in an ice-covered state; S3. Based on the background data of the transmission line in the non-iced state and the icing data of the transmission line in the iced state, perform icing status analysis and early warning.

[0009] Furthermore, after obtaining the background data of the transmission line in the un-iced state, the method further includes: A three-dimensional model of the transmission line is constructed based on the transmission line detection area. Combined with the background data, the radar scattering echo characteristics corresponding to each transmission line are calibrated one by one.

[0010] Furthermore, the S2 includes: Geometric correction is performed based on synthetic aperture radar satellite images of the transmission line monitoring area under ice cover; The synthetic aperture radar satellite image under ice-covered state is registered with the background data of the transmission line under ice-free state; The registered synthetic aperture radar satellite image is cropped to obtain ice cover data of the transmission line area and corresponding background data slices.

[0011] Furthermore, the S3 includes: Based on the background data, the transmission line scattering target extraction and scattering characteristics analysis are carried out to obtain the backscattering coefficient of the transmission line scattering spot before ice coating and the sag value of the scattering arc in the distance direction; Based on the ice coverage data, the transmission line scattering target extraction and scattering characteristics analysis are carried out to obtain the backscattering coefficient of the transmission line scattering spot after ice coverage and the sag value of the scattering arc in the distance direction; Calculate the difference in backscattering coefficient of the transmission line before and after ice coating to obtain the change in backscattering coefficient of the transmission line; Calculate the difference in the distance sag value of the transmission line's scattered arc before and after ice coating to obtain the conductor sag change; Ice cover warning is issued based on the change in the backscatter coefficient of the conductor scattering spot and the change in the conductor sag.

[0012] Furthermore, the judgment conditions for icing warning include: When the change in the backscatter coefficient of the conductor spot decreases by more than 3dB, an ice cover warning is issued; Alternatively, when the conductor sag change exceeds the set warning threshold, an icing warning is issued.

[0013] Furthermore, the S3 further includes: Based on the changes in the backscattering coefficient of the conductor scattering spot and the conductor sag, a visual trend graph of the two changes before and after the transmission line is covered with ice is generated.

[0014] According to one aspect of the present disclosure, a transmission line icing status analysis and early warning system based on synthetic aperture radar satellite imagery is provided, comprising: The background data acquisition module is used to collect data from synthetic aperture radar images of the transmission line monitoring area based on meteorological condition forecasts to obtain background data when the transmission lines are not covered with ice; An ice data acquisition module is used to collect and preprocess data based on synthetic aperture radar satellite images of the transmission line monitoring area under ice coverage to obtain ice data of the transmission line under ice coverage; The analysis and warning module performs ice coverage analysis and warning based on the background data of the transmission lines in the un-iced state and the ice coverage data of the transmission lines in the iced state.

[0015] According to one aspect of the present specification, there is provided an electronic device comprising a memory and a processor, wherein the memory stores a computer program, and wherein the processor implements the steps of the method for analyzing and warning the icing status of power transmission lines based on synthetic aperture radar satellite images when executing the computer program.

[0016] According to one aspect of the present specification, a computer-readable storage medium is provided, on which a computer program is stored, characterized in that when the computer program is executed by a processor, the steps of the transmission line icing status analysis and early warning method based on synthetic aperture radar satellite images are implemented.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention uses SAR satellite imaging technology to penetrate clouds, rain, snow, and haze, and can still obtain high signal-to-noise ratio images in extreme weather conditions such as blizzards, freezing rain, and strong winds. This ensures the continuous perception of key risk events such as ice growth and conductor galloping, and realizes wide-area dynamic monitoring and rapid assessment. 2. When multiple transmission lines are affected by ice and snow weather conditions in a local area, the present invention uses a large amount of SAR satellite data to quickly monitor the ice coverage status of the transmission lines and provide real-time early warning, solving the problem of limited monitoring capabilities and range of current manual and online monitoring sensors; 3. The present invention utilizes the scattering characteristics of SAR satellite images of transmission lines before and after icing to obtain the conductor sag state and RCS attenuation changes, realizing analysis and early warning of the icing state of transmission lines, and achieving reliable all-weather monitoring. It is also a new business expansion generated by the application of SAR satellite remote sensing technology, providing new services and added value in the operation and maintenance of transmission lines. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 is a flow chart of a method according to an embodiment of the present invention; Figure 2 Schematic diagram of monitoring results of scattered-ray sag changes in radar images after ice coating on transmission lines according to an embodiment of the present invention; Figure 3 Schematic diagram of the change in scattered radiation sag in radar images before and after ice coating on a transmission line according to an embodiment of the present invention. DETAILED DESCRIPTION

[0020] It should be noted that: Background data refers to SAR satellite images of transmission lines without ice.

[0021] Ice cover data refers to SAR satellite images of transmission lines covered with ice.

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] like Figure 1 As shown, an embodiment of the present invention provides a method for analyzing and warning the icing status of transmission lines based on synthetic aperture radar satellite images, including: S1. Based on meteorological condition forecasts, data is collected from synthetic aperture radar images of the transmission line monitoring area to obtain background data of the transmission line in an un-iced state; S2. Based on synthetic aperture radar satellite images of the transmission line monitoring area in an iced state, data is collected and preprocessed to obtain icing data of the transmission line in an iced state; S3. Analysis and warning are performed based on the background data of the transmission line in an un-iced state and the icing data of the transmission line in an iced state.

[0024] Specifically, the embodiment of the present invention also provides specific steps for obtaining background data of transmission lines in an un-iced state, thereby implementing a reasonable scheduling and pre-acquisition strategy for SAR satellite resources, thereby providing complete time series and effective comparative benchmark data for ice status monitoring: 1. Regional positioning driven by meteorological warnings: The system accesses the disastrous weather forecast information issued by the meteorological department or the meteorological warning information generated by the power grid in real time, determines the areas and time periods where icing risks may occur, and creates key monitoring areas for transmission lines.

[0025] 2. Dynamic scheduling of SAR satellite data acquisition tasks: Based on the key monitoring areas mentioned above, dynamic observation requests are submitted to the SAR satellite constellation, with imaging tasks for potential ice-covered areas prioritized to ensure that SAR images of the conductors in the area are in normal condition (uncovered) as background data before ice accumulation occurs.

[0026] 3. Construction of a three-dimensional spatial model of transmission lines: For transmission lines in key areas, a three-dimensional geometric model is constructed based on information such as line direction, tower layout, and height difference changes. This is used for subsequent scattering simulation and posture change identification.

[0027] 4. Obtaining the correspondence between the conductor scattering characteristics in SAR satellite images and each transmission conductor / ground wire: Using the scattering characteristics in SAR images of the conductors in an un-ice-covered state and the three-dimensional model of the transmission lines, combined with the simulation method of calculating the conductor scattering spots and scattering arcs, the one-to-one correspondence between the scattered echo characteristics of each transmission line and the transmission line in real three-dimensional space is calibrated.

[0028] Specifically, the embodiment of the present invention further provides specific steps for obtaining ice coverage data of a transmission line in an ice-covered state and performing data analysis: 1. Acquisition of SAR satellite images of the target area: When the weather warning information indicates that the target area has entered the possible icing stage, the system dispatches SAR satellites to image the area according to the pre-set mission plan.

[0029] 2. Image preprocessing and registration correction: To ensure the accuracy of SAR data comparison and analysis, the acquired raw data undergoes necessary preprocessing operations, including: geometric correction, using the known geographic information of the transmission line to locate and accurately calibrate the conductor scattering spots in the SAR image; registration processing, registering the SAR data obtained during the latest meteorological icing warning period with the background data obtained in Module 1; image cropping, cropping the transmission line area in the registered SAR image dataset.

[0030] 3. Transmission line target extraction and scattering feature analysis: Based on the geometric relationship between the three-dimensional model of the transmission line and the SAR image, the scattering spots in the SAR image of the transmission line are automatically or semi-automatically extracted. The backscatter coefficient (RCS), the distribution pattern of the scattering spots, and the brightness center position of the transmission line area in the current SAR image are analyzed to determine the specific transmission line. The difference in the scattering characteristics (RCS) of the transmission line between the SAR data during the latest meteorological icing warning period and the background SAR data is calculated and recorded as the change in the RCS attenuation of the conductor. The difference in the distance direction between the scattering arcs of the transmission line between the SAR data under ice cover and the background SAR data is calculated and recorded as the increase in the conductor sag.

[0031] 4. Output analysis results: Generate an analysis report on the icing status of each transmission line; visualize the changing trend of the icing degree of the transmission line (conductor scattering spot RCS attenuation and conductor sag increase) obtained by outputting SAR differential images and SAR data before and after icing; input the results of conductor scattering spot RCS attenuation and conductor sag increase into the monitoring system platform to provide quantitative input basis for subsequent early warning.

[0032] Specifically, the embodiment of the present invention further provides specific steps for analyzing and providing early warning of ice coating on transmission lines: 1. Early Warning Indicator Construction: The spot scattering intensity (RCS) of a transmission line reflects changes in the electromagnetic properties of the conductor surface. Ice coverage typically causes changes in the conductor's surface roughness and dielectric properties, leading to a decrease in the RCS value. Considering that radar image data is an electrical signal, the statistical regularity of its observations meets the 3dB signal-to-noise ratio requirement, meaning that information meeting a 3dB difference can be recorded as a true signal. Changes in conductor sag: Ice coverage increases conductor load, causing an increase in sag in the suspended state. This can be determined by combining the distance offset of the transmission line radar scattering in SAR images with SAR imaging parameters. The accuracy of this increase in sag generally depends on the resolution of the SAR satellite. Under theoretical conditions, sub-pixel observation accuracy can be achieved. For a 1m resolution image, the theoretical maximum resolution can reach 0.1m.

[0033] 2. Icing Warning Based on Scattering Intensity: This section determines whether significant icing is present by comparing the RCS attenuation of the scattering spots on the transmission lines before and after icing. The specific judgment logic is as follows: if the current RCS value of the conductor decreases by less than 3dB compared to the baseline, it is considered normal; if the RCS value decreases by more than 3dB, it is considered suspected icing and the warning mechanism is activated.

[0034] 3. Conductor Sag-Based Icing Warning: This component analyzes the vertical geometric changes in the conductor's scattering pattern to estimate the actual conductor sag and compares it with a pre-set warning threshold Δ (in meters). The judgment logic is as follows: If the current conductor sag decreases by less than the threshold Δ, the condition is considered normal; if the sag change exceeds the threshold Δ, it is considered a suspected icing condition and an early warning response is initiated. The threshold Δ is determined based on a comprehensive consideration of factors such as the specific transmission line chord length, conductor profile, conductor temperature, and the height difference between mounting points.

[0035] 4. Warning result output and linkage response: Warning information will be synchronized to the power grid dispatching center in the form of text reports, graphical situation maps, etc.; it supports automatic linkage with on-site weather stations, ice monitoring equipment or other inspection tasks; the system supports retrospective analysis of historical warning data and model self-learning optimization to improve the accuracy of future warnings.

[0036] Specifically, the embodiment of the present invention further provides that the scattering intensity (RCS) of the scattering spots of two ultra-high voltage direct current transmission lines after ice coating is reduced from 67dB to 53 and 50dB respectively. Figure 2 As shown in Figure 3, this indicates that the two transmission lines are severely iced and the ice coverage states are inconsistent. The conductor with the largest RCS drop has a greater corresponding ice thickness. Figure 2 Figure b shows SAR image data taken before ice coating on a certain UHVDC transmission line. The scattering spots formed by the two UHVDC transmission lines are extremely bright, with a maximum value of approximately 67 dB. The RCS of the scattering spots on the two lines are completely consistent. Figure 2 Figure a shows the scattering pattern of a transmission line during an ice warning. Comparing the RCS values of the scattering patterns on the corresponding transmission lines shows that the RCS value of the left conductor decreased by 14dB, while that of the right conductor decreased by 17dB. The software system designed in this embodiment of the present invention automatically calculates this difference and issues a critical ice warning for these two conductors.

[0037] Specifically, the embodiment of the present invention also provides a schematic diagram of the change of the scattered line sag before and after ice coating on the transmission line, as shown in FIG. Figure 3 As shown in the figure, by superimposing the ice warning period with the background data, it is possible to clearly determine that the upward movement distance of the scattering arc of the transmission line before and after ice cover is about 2 pixels. and radar range resolution , which corresponds to the increase in the vertical curvature of the transmission line in three-dimensional space Calculation formula: (1) in, is the difference in distance direction of the wire scattering arc before and after ice covering, and the unit is the number of pixels; is the local incidence angle of the SAR satellite, unit / degree, It is the range resolution of the radar image, in m.

[0038] Specifically, the calculation of the ice cover warning threshold Δ (in meters) based on the increase in transmission line sag can be carried out with reference to traditional power-related technical standards. Generally speaking, it is necessary to consider the specific transmission line chord length, conductor profile, conductor temperature, height difference of the mounting point, and other factors. This system uses the threshold Δ provided by traditional technology and substitutes it into the calculation formula (1) to calculate the corresponding conductor sag increase warning value, thereby achieving real-time warning of conductor icing.

[0039] Specifically, based on actual cases of X-band and C-band SAR satellite monitoring of icing conditions, the present invention proposes using comparative analysis of satellite-borne SAR data before and after icing to determine the attenuation of scattering spot intensity before and after icing, as well as the increase in the sag value of the conductor scattering arc in the upward direction of the distance, as the basis for evaluating the icing condition of transmission lines, and conducting assessment and early warning of the risk of icing conditions on transmission lines.

[0040] The implementation of each embodiment of the present invention is based on programmed processing performed by a device with processor functionality. Therefore, in practical engineering applications, the technical solutions and functionalities of each embodiment of the present invention are packaged into various modules. Based on this reality, and in addition to the aforementioned embodiments, an embodiment of the present invention provides a system for analyzing and warning the icing status of power transmission lines based on synthetic aperture radar satellite imagery. This system is used to implement the method for analyzing and warning the icing status of power transmission lines based on synthetic aperture radar satellite imagery described in the aforementioned method embodiment.

[0041] The system includes: a background data acquisition module, which is used to collect data from synthetic aperture radar images of the transmission line monitoring area based on meteorological condition forecasts to obtain background data when the transmission line is not covered with ice; an icing data acquisition module, which is used to collect and preprocess data based on synthetic aperture radar satellite images of the transmission line monitoring area in an icing state to obtain icing data when the transmission line is covered with ice; and an analysis and early warning module, which performs icing status analysis and early warning based on the background data of the transmission line in an uniced state and the icing data of the transmission line in an icing state.

[0042] The transmission line icing status analysis and early warning system based on synthetic aperture radar satellite imagery provided in an embodiment of the present invention addresses the problem of how to use the radar scattering characteristics of iced transmission lines to invert the ice thickness and the sag state of the conductors after icing. By adopting several modules, when multiple transmission lines in a local area are affected by ice and snow weather conditions, the system uses a large amount of SAR satellite data to quickly monitor the icing status of the transmission lines and provide real-time early warnings, thus solving the problem of the limited monitoring capabilities and range of current manual and online monitoring sensors.

[0043] Based on the same inventive concept as the aforementioned embodiment, an embodiment of the present invention further provides an electronic device, including a memory and a processor, wherein the memory is used to store computer-executable instructions, and the processor is used to execute computer-executable instructions, thereby implementing a method for analyzing and warning the icing status of transmission lines based on synthetic aperture radar satellite images as proposed in the aforementioned embodiment.

[0044] Embodiments of the present invention also provide a computer-readable storage medium storing a computer program. When executed by a processor, this program addresses the limited monitoring capabilities and range of current manual and online monitoring sensors. It ensures continuous sensing of key risk events such as ice growth and conductor galloping, enabling wide-area dynamic monitoring and rapid assessment, and ensuring reliable, all-weather monitoring.

[0045] The storage medium can be any non-volatile storage device such as a hard disk, solid-state drive, flash drive, optical disk, etc., which is used to store computer program code and necessary data files. The stored computer program includes: background data acquisition module, ice cover data acquisition module, analysis and early warning module.

[0046] Finally, it should be noted that the above specific embodiments are merely representative examples of the present invention. Obviously, the present invention is not limited to the above specific embodiments and is susceptible to numerous variations. Any simple modifications, equivalent variations, and modifications to the above specific embodiments based on the technical essence of the present invention shall be deemed to fall within the scope of protection of the present invention.

Claims

1. A method for analyzing and warning the ice coverage of power transmission lines based on synthetic aperture radar satellite images, characterized in that: include: S1. Based on the meteorological condition forecast, data is collected from synthetic aperture radar images of the transmission line monitoring area to obtain background data when the transmission lines are not covered with ice; S2. Based on synthetic aperture radar satellite images of the transmission line monitoring area in an ice-covered state, data collection and preprocessing are performed to obtain ice coverage data of the transmission line in an ice-covered state; S3. Based on the background data of the transmission line in the non-iced state and the icing data of the transmission line in the iced state, perform icing status analysis and early warning.

2. The method for analyzing and warning the ice coverage of power transmission lines based on synthetic aperture radar satellite images according to claim 1, characterized in that: After obtaining the background data of the transmission lines without ice, the following are also included: A three-dimensional model of the transmission line is constructed based on the transmission line detection area. Combined with the background data, the radar scattering echo characteristics corresponding to each transmission line are calibrated one by one.

3. The method for analyzing and warning the ice coverage of power transmission lines based on synthetic aperture radar satellite images according to claim 1, characterized in that: Said S2 comprises: Geometric correction is performed based on synthetic aperture radar satellite images of the transmission line monitoring area under ice cover; The synthetic aperture radar satellite image under ice-covered state is registered with the background data of the transmission line under ice-free state; The registered synthetic aperture radar satellite image is cropped to obtain ice cover data of the transmission line area and corresponding background data slices.

4. The method for analyzing and warning the ice coverage of power transmission lines based on synthetic aperture radar satellite images according to claim 1, characterized in that: The S3 includes: Based on the background data, the transmission line scattering target extraction and scattering characteristics analysis are carried out to obtain the backscattering coefficient of the transmission line scattering spot before ice coating and the sag value of the scattering arc in the distance direction; Based on the ice coverage data, the transmission line scattering target extraction and scattering characteristics analysis are carried out to obtain the backscattering coefficient of the transmission line scattering spot after ice coverage and the sag value of the scattering arc in the distance direction; Calculate the difference in backscattering coefficient of the transmission line before and after ice coating to obtain the change in backscattering coefficient of the transmission line; Calculate the difference in the distance sag value of the transmission line's scattered arc before and after ice coating to obtain the conductor sag change; Ice cover warning is issued based on the change in the backscatter coefficient of the conductor scattering spot and the change in the conductor sag.

5. The method for analyzing and warning the ice coverage of power transmission lines based on synthetic aperture radar satellite images according to claim 4, characterized in that: The criteria for issuing an icing warning include: When the decrease in the backscatter coefficient of the conductor spot is greater than the warning value, an ice cover warning is issued; Alternatively, when the conductor sag change exceeds the set warning threshold, an icing warning is issued.

6. The method for analyzing and warning the ice coverage of power transmission lines based on synthetic aperture radar satellite images according to claim 4, characterized in that: Said S3 further includes: Based on the changes in the backscattering coefficient of the conductor scattering spot and the conductor sag, a visual trend graph of the two changes before and after the transmission line is covered with ice is generated.

7. A transmission line ice coverage analysis and early warning system based on synthetic aperture radar satellite images, characterized in that: include: The background data acquisition module is used to collect data from synthetic aperture radar images of the transmission line monitoring area based on meteorological condition forecasts to obtain background data when the transmission lines are not covered with ice; An ice data acquisition module is used to collect and preprocess data based on synthetic aperture radar satellite images of the transmission line monitoring area under ice coverage to obtain ice data of the transmission line under ice coverage; The analysis and warning module performs ice coverage analysis and warning based on the background data of the transmission lines in the un-iced state and the ice coverage data of the transmission lines in the iced state.

8. An electronic device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method for analyzing and warning the ice coverage status of transmission lines based on synthetic aperture radar satellite images according to any one of claims 1 to 6 are implemented.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method for analyzing and warning the ice coverage status of a power transmission line based on synthetic aperture radar satellite images according to any one of claims 1 to 6 are implemented.

Images