A tree barrier detection method and device based on tree line phase-to-ground breakdown risk, equipment and storage medium

Abstract

This invention discloses a tree obstruction detection method, device, equipment, and storage medium based on the risk of tree-to-ground phase breakdown, belonging to the field of transmission line operation and maintenance technology. The method involves: acquiring relevant parameters of the target transmission line area; simulating fire combustion in the target transmission line area to obtain maximum flame height and flame temperature distribution data, and determining the breakdown field strength correction values ​​for the flame zone, smoke zone, and wildfire bridging mode; when the wildfire bridging mode is smoke bridging, calculating the breakdown voltage of the flame zone and the breakdown voltage of the smoke zone separately, and superimposing the flame zone breakdown voltage and the smoke zone breakdown voltage to obtain the line flame breakdown voltage; when the wildfire bridging mode is flame bridging, determining the calculated flame zone breakdown voltage as the line flame breakdown voltage; and clearing tree obstructions from the vegetation when the line flame breakdown voltage exceeds the line operating phase voltage threshold. This invention can solve the current problem of low safety in transmission lines.

Description

Technical Field

[0001] This invention relates to the field of power transmission line operation and maintenance technology, and in particular to a tree fault detection method, device, equipment and storage medium based on the risk of tree-line phase-to-ground breakdown. Background Technology

[0002] The height of vegetation (trees) in power transmission line corridors is a crucial indicator of the risk of power line tripping due to wildfires. On one hand, excessively tall trees, due to their high conductivity, directly reduce the effective insulation size of transmission lines; on the other hand, the growth of trees can provide flammable materials for flames, leading to more intense fires. To ensure the safety and stability of the power grid and reduce economic losses, regularly clearing excessively tall trees near power transmission line corridors in forest areas (tree obstruction removal) is of great importance.

[0003] Currently, tree clearing in power transmission corridors mainly relies on experience and regulations, using manual or drone inspections to identify excessively tall trees exceeding a fixed safe height within the corridor, ensuring sufficient clearance for the conductors. However, this clearance distance is determined solely based on air discharge and vegetation conductivity, without considering the impact of flames on air insulation when these vegetation burns. This results in a clearance distance that is not adaptable to different vegetation conditions, affecting the safety of power transmission lines. Summary of the Invention

[0004] This invention provides a tree obstacle detection method, device, equipment, and storage medium based on the risk of tree-line phase-to-ground breakdown, which can solve the problem of low safety of transmission lines in the prior art.

[0005] To address the aforementioned technical problems, this invention provides a tree barrier detection method based on treeline phase-ground penetration risk, comprising: Obtain the line operating phase voltage threshold, altitude, vegetation height difference, and vegetation type of the target transmission line area; Fire burning simulation was performed on the target transmission line area to generate data on maximum flame height and flame temperature distribution; Based on the vegetation type, altitude, and flame temperature distribution data, the breakdown field strength correction values ​​for the flame zone and the smoke zone are determined respectively. The wildfire bridging method is determined by comparing the difference in vegetation height along the transmission line with the maximum flame height. When the wildfire bridging method is smoke bridging, the breakdown voltage of the flame zone is calculated based on the breakdown field strength correction value of the flame zone and the maximum flame height; the breakdown voltage of the smoke zone is calculated based on the breakdown field strength correction value of the smoke zone, the maximum flame height and the difference in vegetation height of the transmission line; the breakdown voltage of the flame zone and the breakdown voltage of the smoke zone are superimposed to obtain the line flame breakdown voltage; When the wildfire bridging method is flame bridging, the line flame breakdown voltage is calculated based on the flame zone breakdown field strength correction value and the difference in vegetation height of the transmission line. When the flame breakdown voltage of the line is greater than the working phase voltage threshold of the line, the vegetation should be cleared of tree obstructions.

[0006] As a preferred embodiment, the step of simulating fire combustion in the target transmission line area to generate maximum flame height and flame temperature distribution data includes: Acquire vegetation height, vegetation canopy density, and environmental parameters in the target transmission line area; The flame spread rate is determined based on the vegetation type and the environmental parameters. The calorific value of the combustible material is determined according to the preset calorific value comparison table and the vegetation type. Based on the vegetation species, determine the factors affecting combustible load in the vegetation height and vegetation canopy density; The combustible load is calculated based on the factors affecting the combustible load and the preset weighting coefficients. Based on the vegetation height difference of the transmission line, the flame spread rate, the calorific value of the combustibles, and the combustible load, a fire line combustion simulation was performed in the target transmission line area to obtain the maximum flame height and fire line intensity. Based on the maximum flame height and the fire line intensity, determine the flame temperature distribution data.

[0007] As a preferred embodiment, determining the flame temperature distribution data based on the maximum flame height and the fire line intensity includes: Obtain the highest monthly temperature in the target transmission line area during the peak wildfire season; Based on the fire intensity and the difference in vegetation height along the transmission line, the temperature rise correction value at the conductor is calculated, and the monthly maximum temperature in the target transmission line area during the peak wildfire season is corrected using the temperature rise correction value at the conductor, so as to obtain the highest temperature of the flame at the conductor. The flame top temperature rise correction value is calculated based on the fire intensity and the maximum flame height, and the monthly maximum temperature in the target transmission line area during the peak wildfire season is corrected using the flame top temperature rise correction value to obtain the maximum flame top temperature. The flame temperature distribution data is determined based on the highest temperature of the flame at the conductor and the highest temperature at the top of the flame.

[0008] As a preferred embodiment, determining the breakdown field strength correction values ​​for the flame zone and the smoke zone based on the vegetation type, altitude, and flame temperature distribution data includes: The correction value for the breakdown field strength in the flame zone is determined based on the vegetation type. Determine the altitude correction factor based on the altitude; Determine the flame temperature correction coefficient based on the flame temperature distribution data; Based on the altitude correction coefficient and the flame temperature correction coefficient, a comprehensive correction coefficient is derived by coupling altitude with the degree of weakening of air insulation strength by flame. The preset benchmark breakdown field strength of the smoke and dust region is corrected based on the comprehensive correction coefficient, and the corrected value of the breakdown field strength of the smoke and dust region is obtained.

[0009] As a preferred embodiment, determining the wildfire bridging method by comparing the vegetation height difference of the transmission line and the maximum flame height includes: Compare the difference between the maximum flame height and the vegetation height along the power transmission line; When the maximum flame height is less than or equal to the difference in vegetation height between the transmission line and the fire line, the fire bridging method is determined to be smoke bridging. When the maximum flame height is greater than the difference in vegetation height between the transmission line and the fire line, the fire bridging method is determined to be flame bridging.

[0010] As a preferred option, when the wildfire bridging method is smoke bridging, the line flame breakdown voltage is calculated according to the following formula: In the formula, This refers to the voltage at which the line is broken down by flame. This is the correction value for the penetration field strength in the flame zone; This is the correction value for the breakdown field strength in the smoke and dust region; Maximum flame height; The difference in vegetation height between power transmission lines.

[0011] As a preferred option, when the wildfire bridging method is flame bridging, the line flame breakdown voltage is calculated according to the following formula: In the formula, This refers to the voltage at which the line is broken down by flame. This is the correction value for the penetration field strength in the flame zone; The difference in vegetation height between power transmission lines.

[0012] Accordingly, the present invention provides a tree obstacle detection device based on tree-line phase-ground breakdown risk, comprising: a data acquisition module, a combustion simulation module, a breakdown field strength calculation module, a wildfire bridging mode judgment module, a first breakdown voltage calculation module, a second breakdown voltage calculation module, and a tree obstacle clearing module; The data acquisition module is used to acquire the line working phase voltage threshold, altitude, vegetation height difference and vegetation type of the target transmission line area; The combustion simulation module is used to simulate fire line combustion in the target transmission line area to generate maximum flame height and flame temperature distribution data. The breakdown field strength calculation module is used to determine the breakdown field strength correction value of the flame zone and the breakdown field strength correction value of the smoke zone based on the vegetation type, the altitude and the flame temperature distribution data, respectively. The wildfire bridging method determination module is used to determine the wildfire bridging method by comparing the difference in vegetation height between the power transmission line and the maximum flame height. The first breakdown voltage calculation module is used to calculate the breakdown voltage of the flame zone based on the breakdown field strength correction value of the flame zone and the maximum flame height when the wildfire bridging method is smoke bridging; to calculate the breakdown voltage of the smoke zone based on the breakdown field strength correction value of the smoke zone, the maximum flame height and the difference in vegetation height of the transmission line; and to obtain the line flame breakdown voltage by superimposing the breakdown voltage of the flame zone and the breakdown voltage of the smoke zone. The second breakdown voltage calculation module is used to calculate the line flame breakdown voltage based on the breakdown field strength correction value of the flame zone and the difference in vegetation height of the transmission line when the wildfire bridging method is flame bridging. The tree obstacle removal module is used to remove tree obstacles from vegetation when the line flame breakdown voltage is greater than the line working phase voltage threshold.

[0013] The present invention also provides a terminal device, comprising: a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein when the processor executes the computer program, it implements the steps of the tree obstacle detection method for tree-line phase ground penetration risk as described in the present invention.

[0014] The present invention also provides a computer-readable storage medium item, comprising: a stored computer program, which, when the computer program is executed, controls the device on which the computer-readable storage medium is located to perform the steps of the tree barrier detection method for tree-line phase-ground penetration risk of the present invention.

[0015] Compared with the prior art, the embodiments of the present invention have the following beneficial effects: This invention provides a tree barrier detection method based on tree-line phase-to-ground breakdown risk. It acquires the line operating phase voltage threshold, altitude, vegetation height difference, vegetation type, vegetation distribution parameters, and environmental parameters of the target transmission line area. Through fire line combustion simulation of the target transmission line area, it obtains the maximum flame height and flame temperature distribution data. It also determines the breakdown field strength correction values ​​for the flame zone, the smoke zone, and the wildfire bridging method. When the wildfire bridging method is smoke bridging, it determines the breakdown field strength correction values ​​based on the flame zone breakdown field. This invention uses a fire-line combustion simulation of the target transmission line area to obtain maximum flame height and flame temperature distribution data, and calculates the breakdown field strength correction values ​​for the flame zone and the smoke zone. Different methods are used to analyze the impact of flame combustion on air insulation for different fire-line bridging methods, calculating the line flame breakdown voltage. When the line flame breakdown voltage exceeds the line working phase voltage threshold, tree clearing is performed, effectively improving the safety of the transmission line. The method also includes calculating the line flame breakdown voltage based on the breakdown field strength correction value for the smoke zone, the maximum flame height, and the difference in vegetation height between the two. Attached Figure Description

[0016] To more clearly illustrate the technical solution of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a flowchart illustrating an embodiment of the tree barrier detection method based on tree-line phase-ground breakdown risk provided by the present invention. Figure 2 This is a schematic diagram of one embodiment of the tree obstacle detection device based on tree-line phase-ground breakdown risk provided by the present invention. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0019] Unless otherwise defined, 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 pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0020] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0021] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0022] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0023] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0024] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0025] See Figure 1To address the low safety of transmission lines in existing technologies, an embodiment of the present invention provides a tree obstacle detection method based on the risk of tree-to-ground phase breakdown. This method includes steps 101 to 107, each step of which is detailed below: Step 101: Obtain the line working phase voltage threshold, altitude, vegetation height difference and vegetation type of the target transmission line area.

[0026] In this embodiment of the invention, the operating phase voltage threshold of the target transmission line area can be calculated based on the maximum operating phase voltage of the transmission line, and the maximum operating phase voltage of the transmission line is calculated based on the nominal voltage and the maximum allowable deviation coefficient of the transmission line. In the formula, U is the maximum operating phase voltage of the transmission line; U is the nominal voltage of the transmission line. This is the maximum permissible deviation coefficient for transmission lines.

[0027] The nominal voltage of a transmission line is used to identify the reference voltage for the design and operation of the line and equipment. Common nominal voltages include 10kV, 110kV, 220kV, and 500kV. The maximum permissible deviation coefficient for a transmission line can be set according to the adaptability of the nominal voltage. For example, the maximum permissible deviation coefficient for transmission lines below 330kV can be set to 1.15, while for transmission lines of 330kV and above, the maximum permissible deviation coefficient can be set to 1.1.

[0028] After calculating the maximum operating phase voltage of the transmission line, multiply it by a factor less than 1 to calculate the operating phase voltage threshold of the line. This factor can be 0.7.

[0029] In this embodiment of the invention, the vegetation height difference between the power transmission line and the vegetation is the height difference between the power transmission line and the vegetation. The vegetation types include conifers, broad-leaved trees, shrubs, and evergreen broad-leaved trees. Tree obstruction detection and analysis are performed separately for different vegetation types and vegetation heights to determine whether tree obstruction removal is necessary for each type of vegetation.

[0030] Step 102: Perform a fire line combustion simulation on the target transmission line area to generate maximum flame height and flame temperature distribution data.

[0031] In this embodiment of the invention, in order to consider the impact of flames on air insulation during vegetation burning, it is necessary to simulate fire burning in the target transmission line area, so as to analyze whether the vegetation in the target transmission line area has formed tree obstructions and whether tree obstruction needs to be cleared based on the generated maximum flame height and flame temperature distribution data.

[0032] As a preferred embodiment, a fire-line combustion simulation is performed on the target transmission line area to generate maximum flame height and flame temperature distribution data, including: Acquire vegetation height, vegetation canopy density, and environmental parameters in the target transmission line area; The flame spread rate is determined based on the vegetation type and the environmental parameters. The calorific value of the combustible material is determined according to the preset calorific value comparison table and the vegetation type. Based on the vegetation species, determine the factors affecting combustible load in the vegetation height and vegetation canopy density; The combustible load is calculated based on the factors affecting the combustible load and the preset weighting coefficients. Based on the vegetation height difference of the transmission line, the flame spread rate, the calorific value of the combustibles, and the combustible load, a fire line combustion simulation was performed in the target transmission line area to obtain the maximum flame height and fire line intensity. Based on the maximum flame height and the fire line intensity, determine the flame temperature distribution data.

[0033] In this embodiment of the invention, simulating fire line combustion in the target transmission line area requires information on flame spread rate and combustible material, including calorific value and load. Fire line combustion simulation can determine the maximum flame height and fire line intensity, and based on these, the flame temperature distribution data can be determined.

[0034] In this embodiment of the invention, the highest monthly temperature, minimum relative humidity, and wind speed during the peak wildfire season in the target transmission line area are first obtained. The wind speed can be determined based on the maximum wind speed at 10m above the ground in the target transmission line area. The table below shows an example of a conversion table between wind speed at 10m and wind speed: Based on the highest monthly temperature, lowest relative humidity, and wind speed during the peak wildfire season in the target transmission line area, the initial flame spread rate in the target transmission line area can be calculated using the following formula: In the formula, The initial flame spread rate, in units of h -1 ; This refers to the highest monthly temperature during the peak wildfire season, expressed in °C. Wind speed rating is a purely numerical value. This represents the minimum relative humidity during the peak wildfire season; it is a pure numerical value. Based on the rate of spread; The marginal contribution coefficient of temperature to velocity is given by , and its unit is . h -1 ℃ -1 The possible value is 0.03; This represents the marginal contribution coefficient of wind speed to the spread rate, and its unit is _____. h -1 The possible value is 0.05; The coefficient representing the inhibitory effect of humidity on the spread rate is given by [value missing]. h -1 The possible value is 0.01. The base spread rate, also known as the inherent velocity under windless, high humidity, and low temperature conditions, is measured in units of . h -1 The possible value is 0.7.

[0035] Since slope, wind speed, and vegetation type all affect the speed of flame spread, slope correction coefficient, wind speed correction coefficient, and vegetation type correction coefficient can be determined based on the slope of the target transmission line area, the maximum wind speed at 10m above the ground, and the vegetation type.

[0036] The slope correction factor is calculated according to the following formula: In the formula, This is the slope correction factor; The value corresponding to the slope of the target transmission line area is dimensionless.

[0037] The wind speed correction factor is calculated using the following formula: In the formula, This is the wind speed correction factor; The value is the maximum wind speed at 10m above the ground in the target transmission line area, and is dimensionless.

[0038] Vegetation type correction factors can be obtained by looking up a table. The table below shows vegetation types and their correction factors. K s An example of a correspondence table: By correcting the initial flame spread rate using the obtained slope correction coefficient, wind speed correction coefficient, and vegetation type correction coefficient, the flame spread rate of the target transmission line area can be obtained: In the formula, The speed at which the flame spreads; This represents the initial flame spread rate; This is the slope correction factor; This is the wind speed correction factor; This is the vegetation type correction factor.

[0039] In this embodiment of the invention, the combustible material information includes the calorific value q and the combustible material load W. The calorific value q can be obtained from a preset calorific value lookup table based on the vegetation type. The table below is an example of a preset calorific value lookup table: Factors influencing the combustible load of vegetation include vegetation height and canopy density, and these factors vary among different vegetation species. Therefore, when calculating the combustible load, it is necessary to first determine the influencing factors and then calculate the combustible load based on these factors and preset weighting coefficients.

[0040] The table below is an example of a comparison table of factors affecting vegetation type and combustible load: For vegetation, a vegetation height threshold is set, along with corresponding combustible loads when the vegetation height is less than or equal to the threshold, and when the vegetation height is greater than the threshold. For example, if the vegetation height threshold is set to 1m, then when the vegetation height is less than or equal to the threshold, the corresponding combustible load is set to 0.4025 kg / m². 2 When the vegetation height exceeds a certain threshold, the corresponding combustible load is set at 0.805 kg / m². 2 .

[0041] The combustible load of shrubs is influenced by vegetation height, and the correlation between combustible load and vegetation height is as follows: In the formula, The combustible load of shrubs; The height of the shrub vegetation; The bulk density of the combustible material of the shrub can be taken as 0. ; The standard combustible load for shrubs can be taken as 0.0364 kg / m². 2 .

[0042] The factor affecting the combustible load of trees is the canopy density. The correlation between the combustible load of pine trees and the canopy density is as follows: In the formula, The combustible load of pine trees; The canopy density of pine trees; The standard combustible load for pine trees can be taken as follows: .

[0043] The combustible load of eucalyptus trees is affected by vegetation canopy density, and the correlation between combustible load and vegetation canopy density of pine trees is as follows: In the formula, The combustible load of eucalyptus trees; The canopy density of pine trees; The standard combustible load for pine trees can be taken as follows: .

[0044] In this embodiment of the invention, the fire line combustion of the target transmission line area is simulated based on the vegetation height difference of the transmission line, the flame spread rate, the calorific value of the combustible material and the combustible material load, and the maximum flame height and fire line intensity can be calculated.

[0045] The formula for calculating the fire intensity is as follows: In the formula, The intensity of the live wire is expressed in kW / m. This represents the calorific value of a combustible material, expressed in kJ / kg. Combustible material load; This represents the speed of flame spread, measured in km / h.

[0046] The formula for calculating the maximum flame height of a crown fire is: In the formula, This represents the maximum flame height, in meters (m). is the fire line intensity of the crown fire, expressed in kW / m; D is the crown fire flame height constant, expressed in kW / m. The possible value is 0.02664.

[0047] After calculating the maximum flame height and fire line intensity, the flame temperature distribution data can be determined by analyzing the maximum flame height and fire line intensity.

[0048] As a preferred embodiment, determining the flame temperature distribution data based on the maximum flame height and the fire line intensity includes: Obtain the highest monthly temperature in the target transmission line area during the peak wildfire season; Based on the fire intensity and the difference in vegetation height along the transmission line, the temperature rise correction value at the conductor is calculated, and the monthly maximum temperature in the target transmission line area during the peak wildfire season is corrected using the temperature rise correction value at the conductor, so as to obtain the highest temperature of the flame at the conductor. The flame top temperature rise correction value is calculated based on the fire intensity and the maximum flame height, and the monthly maximum temperature in the target transmission line area during the peak wildfire season is corrected using the flame top temperature rise correction value to obtain the maximum flame top temperature. The flame temperature distribution data is determined based on the highest temperature of the flame at the conductor and the highest temperature at the top of the flame.

[0049] In this embodiment of the invention, the flame temperature distribution data is determined based on the highest temperature of the flame at the conductor and the highest temperature at the flame tip. Both the highest temperature at the conductor and the highest temperature at the flame tip are obtained by correcting for a reference temperature. The reference temperature is the highest monthly air temperature in the target transmission line area during the peak wildfire season.

[0050] The process involves calculating the temperature rise correction value at the conductor based on the difference between the fire intensity and the vegetation height along the transmission line. This correction value is then used to adjust the monthly maximum temperature during peak wildfire season, resulting in the highest temperature of the flames at the conductor. This process can be expressed by the following formula: In the formula, This represents the highest temperature of the flame at the wire. This is the highest monthly temperature during the peak season for wildfires; For fire wire strength; The difference in vegetation height along the power transmission line; These are constant coefficients, and their units are... The possible value is 3.9.

[0051] The flame top temperature rise correction value is calculated based on the fire intensity and maximum flame height. Then, the monthly maximum temperature during the peak wildfire season is corrected using the flame top temperature rise correction value to obtain the maximum flame top temperature. This process can be expressed by the following formula: In the formula, This is the highest temperature at the top of the flame; This is the highest monthly temperature during the peak season for wildfires; For fire wire strength; This represents the maximum flame height.

[0052] The calculated maximum temperature of the flame at the conductor and the maximum temperature at the top of the flame are both determined as flame temperature distribution data.

[0053] Step 103: Based on the vegetation type, altitude, and flame temperature distribution data, determine the breakdown field strength correction values ​​for the flame zone and the smoke zone, respectively.

[0054] In this embodiment of the invention, the line flame breakdown voltage, used to characterize the effect of flame on air insulation during vegetation combustion, is calculated based on breakdown field strength and flame height data. When vegetation burns in the target transmission line area, it forms a flame zone and a smoke zone; therefore, it is necessary to first obtain the breakdown field strength of the flame zone and the breakdown field strength of the smoke zone. The breakdown field strength is affected by vegetation type, altitude, or flame temperature; therefore, it is necessary to calculate correction values ​​for the breakdown field strength of the flame zone and the smoke zone based on these data.

[0055] As a preferred embodiment, based on the vegetation type, altitude, and flame temperature distribution data, the breakdown field strength correction values ​​for the flame zone and the smoke zone are determined, including: The correction value for the breakdown field strength in the flame zone is determined based on the vegetation type. Determine the altitude correction factor based on the altitude; Determine the flame temperature correction coefficient based on the flame temperature distribution data; Based on the altitude correction coefficient and the flame temperature correction coefficient, a comprehensive correction coefficient is derived by coupling altitude with the degree of weakening of air insulation strength by flame. The preset benchmark breakdown field strength of the smoke and dust region is corrected based on the comprehensive correction coefficient, and the corrected value of the breakdown field strength of the smoke and dust region is obtained.

[0056] In this embodiment of the invention, the influencing factor of the breakdown field strength of the flame zone is the vegetation type. Different vegetation types correspond to different proportions, water content and density of the flame continuous zone. The proportions, water content and density of the flame continuous zone all affect the magnitude of the breakdown field strength of the flame zone. Therefore, when calculating the breakdown field strength of the flame zone, it is necessary to obtain the vegetation type, the proportion of the flame continuous zone, the water content and density.

[0057] The formula for calculating the correction value of the penetration field strength in the flame zone is: In the formula, This is the correction value for the penetration field strength in the flame zone; This is the flame continuity factor; This is a correction factor for flame vegetation species; This is the correction factor for the water content of flame vegetation; This is the vegetation density correction factor; The average breakdown electric field strength in the continuous zone of a standard flame is expressed in kV / m and can be taken as 60. The average breakdown electric field strength in the discontinuous zone of a standard flame is expressed in kV / m and can be taken as 173.7.

[0058] The table below is an example of a comparison table between vegetation types and flame continuity coefficients. The table below is an example of a comparison table of correction factors for flame vegetation species, correction factors for flame vegetation water content, and correction factors for vegetation density: Based on the above table lookup operation, the flame continuity coefficient, flame vegetation type correction coefficient, flame vegetation water content correction coefficient, and vegetation density correction coefficient for different vegetation types can be obtained. Then, the flame zone penetration field strength correction value can be calculated according to the formula.

[0059] In this embodiment of the invention, the factors affecting the breakdown field strength of the smoke and dust zone are altitude and flame temperature. Therefore, when calculating the breakdown field strength of the smoke and dust zone, it is necessary to obtain the altitude and flame temperature, and use the altitude and flame temperature to correct the preset benchmark breakdown field strength of the smoke and dust zone, thereby obtaining the corrected value of the breakdown field strength of the smoke and dust zone.

[0060] The formula for calculating the correction value of the breakdown field strength in the smoke and dust zone is: In the formula, This is the correction value for the breakdown field strength in the smoke and dust region; To preset the baseline breakdown field strength in the dusty area, it can be set to the average breakdown field strength per unit length of the standard air gap, which can be taken as 359.2 kV / m; This is the altitude correction factor; This is the flame temperature correction factor.

[0061] The altitude correction factor is determined based on the altitude. The higher the altitude, the greater the weakening of the air insulation strength, and the smaller the altitude correction factor.

[0062] The flame temperature correction factor is determined based on the highest flame temperature at the conductor and the highest flame tip temperature from the flame temperature distribution data. Its calculation formula is as follows: In the formula, This is the flame temperature correction factor; This is the highest temperature at the top of the flame; This represents the highest temperature of the flame at the wire.

[0063] By using the altitude correction factor Flame temperature correction factor Multiplying these factors yields a comprehensive correction factor that reflects the combined effect of altitude and the weakening effect of flame on air insulation strength. Finally, by using the comprehensive correction coefficient to preset the benchmark breakdown field strength of the smoke and dust area, the correction value of the breakdown field strength of the smoke and dust area can be calculated.

[0064] Step 104: Determine the wildfire bridging method by comparing the difference in vegetation height along the transmission line with the maximum flame height.

[0065] In this embodiment of the invention, different methods are used to analyze the impact of flames on air insulation during vegetation combustion for different wildfire bridging methods, and the line flame breakdown voltage is calculated. Therefore, before calculating the line flame breakdown voltage, the wildfire bridging method needs to be determined based on the difference in vegetation height and the maximum flame height of the transmission line.

[0066] As a preferred embodiment, the wildfire bridging method is determined by comparing the difference in vegetation height along the transmission line with the maximum flame height, including: Compare the difference between the maximum flame height and the vegetation height along the power transmission line; When the maximum flame height is less than or equal to the difference in vegetation height between the transmission line and the fire line, the fire bridging method is determined to be smoke bridging. When the maximum flame height is greater than the difference in vegetation height between the transmission line and the fire line, the fire bridging method is determined to be flame bridging.

[0067] In this embodiment of the invention, when the maximum flame height is less than or equal to the difference in vegetation height between the transmission line and the target transmission line, it indicates that when the vegetation in the target transmission line area burns, both a flame zone and a smoke zone will appear. In this case, calculating the line flame breakdown voltage requires considering the influence of both the flame zone and the smoke zone on air insulation. This wildfire bridging method is smoke bridging. When the maximum flame height is greater than the difference in vegetation height between the transmission line and the target transmission line, it indicates that when the vegetation in the target transmission line area burns, the entire area is a flame zone. In this case, calculating the line flame breakdown voltage only requires considering the influence of the flame zone on air insulation. This wildfire bridging method is flame bridging.

[0068] Step 105: When the wildfire bridging method is smoke bridging, the breakdown voltage of the flame zone is calculated based on the breakdown field strength correction value of the flame zone and the maximum flame height; the breakdown voltage of the smoke zone is calculated based on the breakdown field strength correction value of the smoke zone, the maximum flame height and the difference in vegetation height of the transmission line; the breakdown voltage of the flame zone and the breakdown voltage of the smoke zone are superimposed to obtain the line flame breakdown voltage.

[0069] As a preferred embodiment, when the wildfire bridging method is smoke bridging, the line flame breakdown voltage is calculated according to the following formula: In the formula, This refers to the voltage at which the line is broken down by flame. This is the correction value for the penetration field strength in the flame zone; This is the correction value for the breakdown field strength in the smoke and dust region; Maximum flame height; The difference in vegetation height between power transmission lines.

[0070] In this embodiment of the invention, when the wildfire bridging method is smoke bridging, it is necessary to consider the degree of weakening of air insulation by the flame zone and the smoke zone respectively, and then superimpose the degree of weakening of air insulation by the flame zone and the smoke zone, so as to calculate the line flame breakdown voltage based on the degree of weakening.

[0071] In this context, since the maximum flame height is less than or equal to the difference in vegetation height between the transmission line and the smoke bridge, the height of the flame zone is the maximum flame height. The product of the maximum flame height and the flame zone breakdown field strength correction value is the flame zone breakdown voltage. The height of the smoke zone is the difference between the difference in vegetation height between the transmission line and the maximum flame height. The product of this difference and the breakdown field strength correction value in the smoke and dust region is the breakdown voltage in the smoke and dust region. Finally, by superimposing the breakdown voltage in the flame region and the breakdown voltage in the smoke and dust region, the line flame breakdown voltage under smoke bridging can be calculated.

[0072] At that time, the breakdown voltage of the flame zone was calculated based on the breakdown field strength correction value of the flame zone and the maximum flame height, and the breakdown voltage of the smoke zone was calculated based on the breakdown field strength correction value of the smoke zone, the maximum flame height, and the difference in vegetation height between the transmission line and the smoke zone. The line flame breakdown voltage was obtained by superimposing the breakdown voltage of the flame zone and the breakdown voltage of the smoke zone. When the wildfire bridging method was flame bridging, the line flame breakdown voltage was calculated based on the breakdown field strength correction value of the flame zone and the difference in vegetation height between the transmission line and the smoke zone. When the line flame breakdown voltage was greater than the line working phase voltage threshold, the vegetation was cleared of tree obstacles.

[0073] Step 106: When the wildfire bridging method is flame bridging, calculate the line flame breakdown voltage based on the flame zone breakdown field strength correction value and the difference in vegetation height of the transmission line.

[0074] As a preferred embodiment, when the wildfire bridging method is flame bridging, the line flame breakdown voltage is calculated according to the following formula: In the formula, This refers to the voltage at which the line is broken down by flame. This is the correction value for the penetration field strength in the flame zone; The difference in vegetation height between power transmission lines.

[0075] In this embodiment of the invention, when the wildfire bridging method is flame bridging, that is, the height difference between the transmission line and the vegetation is the flame zone, so only the degree of weakening of the air insulation by the flame zone needs to be considered, and the line flame breakdown voltage can be calculated based on the degree of weakening.

[0076] In this case, since the maximum flame height is greater than the difference in vegetation height between the transmission line and the transmission line during flame bridging, the height of the flame zone is equal to the difference in vegetation height between the transmission line and the product of the difference in vegetation height between the transmission line and the correction value of the breakdown field strength of the flame zone is the line flame breakdown voltage during flame bridging.

[0077] Step 107: When the line flame breakdown voltage is greater than the line working phase voltage threshold, clear the vegetation of tree obstacles.

[0078] In this embodiment of the invention, after calculating the line flame breakdown voltage, the line flame breakdown voltage is compared with the line working phase voltage threshold. When the line flame breakdown voltage is greater than the line working phase voltage threshold, the vegetation in the target transmission line is considered to be a tree obstruction, posing a risk of wildfire, and therefore the vegetation needs to be cleared.

[0079] In this embodiment of the invention, tree obstruction removal mainly involves reducing the height of vegetation. Specifically, the vegetation height is reduced according to a preset height reduction amount to obtain the reduced vegetation height. Then, based on the reduced vegetation height, the updated transmission line vegetation height difference is calculated, and subsequently, the updated line flame breakdown voltage is calculated. Notably, the combustible material load used in calculating the updated line flame breakdown voltage also needs to be updated synchronously. Specifically: In the formula, The updated combustible load capacity; This is the original combustible material load; To reduce the height of the vegetation; This represents the original vegetation height. This is the preset height reduction amount.

[0080] The updated line flame breakdown voltage is compared with the line working phase voltage threshold to determine if tree obstruction still exists. If the updated line flame breakdown voltage is still greater than the line working phase voltage threshold, the tree obstruction removal operation is repeated. If the updated line flame breakdown voltage is less than or equal to the line working phase voltage threshold, the tree obstruction removal operation is stopped, and the current vegetation height is determined as the final safe vegetation height.

[0081] Implementing the above embodiments has the following effects: This invention provides a tree barrier detection method based on tree-line phase-to-ground breakdown risk. It acquires the line operating phase voltage threshold, altitude, vegetation height difference, vegetation type, vegetation distribution parameters, and environmental parameters of the target transmission line area. Through fire line combustion simulation of the target transmission line area, it obtains the maximum flame height and flame temperature distribution data. It also determines the breakdown field strength correction values ​​for the flame zone, the smoke zone, and the wildfire bridging method. When the wildfire bridging method is smoke bridging, it determines the breakdown field strength correction values ​​based on the flame zone breakdown field. This invention uses a fire-line combustion simulation of the target transmission line area to obtain maximum flame height and flame temperature distribution data, and calculates the breakdown field strength correction values ​​for the flame zone and the smoke zone. Different methods are used to analyze the impact of flame combustion on air insulation for different fire-line bridging methods, calculating the line flame breakdown voltage. When the line flame breakdown voltage exceeds the line working phase voltage threshold, tree clearing is performed, effectively improving the safety of the transmission line. The method also includes calculating the line flame breakdown voltage based on the breakdown field strength correction value for the smoke zone, the maximum flame height, and the difference in vegetation height between the two.

[0082] like Figure 2 As shown, based on the above method embodiments, corresponding apparatus embodiments are provided; An embodiment of the present invention provides a tree obstacle detection device based on treeline phase-ground breakdown risk, comprising: a data acquisition module, a combustion simulation module, a breakdown field strength calculation module, a wildfire bridging mode judgment module, a first breakdown voltage calculation module, a second breakdown voltage calculation module, and a tree obstacle clearing module; The data acquisition module is used to acquire the line working phase voltage threshold, altitude, vegetation height difference and vegetation type of the target transmission line area; The combustion simulation module is used to simulate fire line combustion in the target transmission line area to generate maximum flame height and flame temperature distribution data. The breakdown field strength calculation module is used to determine the breakdown field strength correction value of the flame zone and the breakdown field strength correction value of the smoke zone based on the vegetation type, the altitude and the flame temperature distribution data, respectively. The wildfire bridging method determination module is used to determine the wildfire bridging method by comparing the difference in vegetation height between the power transmission line and the maximum flame height. The first breakdown voltage calculation module is used to calculate the breakdown voltage of the flame zone based on the breakdown field strength correction value of the flame zone and the maximum flame height when the wildfire bridging method is smoke bridging; to calculate the breakdown voltage of the smoke zone based on the breakdown field strength correction value of the smoke zone, the maximum flame height and the difference in vegetation height of the transmission line; and to obtain the line flame breakdown voltage by superimposing the breakdown voltage of the flame zone and the breakdown voltage of the smoke zone. The second breakdown voltage calculation module is used to calculate the line flame breakdown voltage based on the breakdown field strength correction value of the flame zone and the difference in vegetation height of the transmission line when the wildfire bridging method is flame bridging. The tree obstacle removal module is used to remove tree obstacles from vegetation when the line flame breakdown voltage is greater than the line working phase voltage threshold.

[0083] As a preferred embodiment, a fire-line combustion simulation is performed on the target transmission line area to generate maximum flame height and flame temperature distribution data, including: Acquire vegetation height, vegetation canopy density, and environmental parameters in the target transmission line area; The flame spread rate is determined based on the vegetation type and the environmental parameters. The calorific value of the combustible material is determined according to the preset calorific value comparison table and the vegetation type. Based on the vegetation species, determine the factors affecting combustible load in the vegetation height and vegetation canopy density; The combustible load is calculated based on the factors affecting the combustible load and the preset weighting coefficients. Based on the vegetation height difference of the transmission line, the flame spread rate, the calorific value of the combustibles, and the combustible load, a fire line combustion simulation was performed in the target transmission line area to obtain the maximum flame height and fire line intensity. Based on the maximum flame height and the fire line intensity, determine the flame temperature distribution data.

[0084] As a preferred embodiment, determining the flame temperature distribution data based on the maximum flame height and the fire line intensity includes: Obtain the highest monthly temperature in the target transmission line area during the peak wildfire season; Based on the fire intensity and the difference in vegetation height along the transmission line, the temperature rise correction value at the conductor is calculated, and the monthly maximum temperature in the target transmission line area during the peak wildfire season is corrected using the temperature rise correction value at the conductor, so as to obtain the highest temperature of the flame at the conductor. The flame top temperature rise correction value is calculated based on the fire intensity and the maximum flame height, and the monthly maximum temperature in the target transmission line area during the peak wildfire season is corrected using the flame top temperature rise correction value to obtain the maximum flame top temperature. The flame temperature distribution data is determined based on the highest temperature of the flame at the conductor and the highest temperature at the top of the flame.

[0085] As a preferred embodiment, based on the vegetation type, altitude, and flame temperature distribution data, the breakdown field strength correction values ​​for the flame zone and the smoke zone are determined, including: The correction value for the breakdown field strength in the flame zone is determined based on the vegetation type. Determine the altitude correction factor based on the altitude; Determine the flame temperature correction coefficient based on the flame temperature distribution data; Based on the altitude correction coefficient and the flame temperature correction coefficient, a comprehensive correction coefficient is derived by coupling altitude with the degree of weakening of air insulation strength by flame. The preset benchmark breakdown field strength of the smoke and dust region is corrected based on the comprehensive correction coefficient, and the corrected value of the breakdown field strength of the smoke and dust region is obtained.

[0086] As a preferred embodiment, the wildfire bridging method is determined by comparing the difference in vegetation height along the transmission line with the maximum flame height, including: Compare the difference between the maximum flame height and the vegetation height along the power transmission line; When the maximum flame height is less than or equal to the difference in vegetation height between the transmission line and the fire line, the fire bridging method is determined to be smoke bridging. When the maximum flame height is greater than the difference in vegetation height between the transmission line and the fire line, the fire bridging method is determined to be flame bridging.

[0087] As a preferred embodiment, when the wildfire bridging method is smoke bridging, the line flame breakdown voltage is calculated according to the following formula: In the formula, This refers to the voltage at which the line is broken down by flame. This is the correction value for the penetration field strength in the flame zone; This is the correction value for the breakdown field strength in the smoke and dust region; Maximum flame height; The difference in vegetation height between power transmission lines.

[0088] As a preferred embodiment, when the wildfire bridging method is flame bridging, the line flame breakdown voltage is calculated according to the following formula: In the formula, This refers to the voltage at which the line is broken down by flame. This is the correction value for the penetration field strength in the flame zone; The difference in vegetation height between power transmission lines.

[0089] It is understood that the above-described device embodiments correspond to the method embodiments of the present invention, and can realize the tree obstacle detection method based on tree-line phase-ground breakdown risk provided by any of the above-described method embodiments of the present invention.

[0090] It should be noted that the device embodiments described above are merely illustrative, and some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Furthermore, in the accompanying drawings of the device embodiments provided by this invention, the connection relationships between modules indicate that they have communication connections, which can specifically be implemented as one or more communication buses or signal lines. Those skilled in the art can understand and implement this without any creative effort.

[0091] Based on the above embodiments of the tree barrier detection method based on tree-line phase-ground penetration risk, another embodiment of the present invention provides a terminal device, which includes a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor. When the processor executes the computer program, it implements the tree barrier detection method based on tree-line phase-ground penetration risk of any embodiment of the present invention.

[0092] For example, in this embodiment, the computer program can be divided into one or more modules, which are stored in the memory and executed by the processor to complete the present invention. The one or more modules may be a series of computer program instruction segments capable of performing a specific function, which describe the execution process of the computer program in the terminal device.

[0093] The terminal device may be a desktop computer, laptop, handheld computer, or cloud server, etc. The terminal device may include, but is not limited to, a processor and a memory.

[0094] The processor can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor can be a microprocessor or any conventional processor. The processor is the control center of the terminal device, connecting all parts of the terminal device via various interfaces and lines.

[0095] Based on the above-described method embodiments, another embodiment of the present invention provides a computer-readable storage medium including a stored computer program, wherein, when the computer program is executed, it controls the device where the computer-readable storage medium is located to execute the tree obstacle detection method based on tree-line phase-ground breakdown risk as described in any of the above-described method embodiments of the present invention.

[0096] The modules / units integrated in the device / terminal equipment, if implemented as software functional units and sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the above embodiments of the present invention can also be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include: any entity or device capable of carrying the computer program code, a recording medium, a USB flash drive, a portable hard drive, a magnetic disk, an optical disk, a computer memory, a read-only memory (ROM), a random access memory (RAM), an electrical carrier signal, a telecommunication signal, and a software distribution medium, etc.

[0097] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the scope of protection of the present invention. In particular, it should be noted that any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention for those skilled in the art.

Claims

1. A tree barrier detection method based on treeline phase-ground penetration risk, characterized in that, include: Obtain the line operating phase voltage threshold, altitude, vegetation height difference, and vegetation type of the target transmission line area; Fire line combustion simulation was performed on the target transmission line area to generate maximum flame height and flame temperature distribution data; Based on the vegetation type, altitude, and flame temperature distribution data, the breakdown field strength correction values ​​for the flame zone and the smoke zone are determined respectively. The wildfire bridging method is determined by comparing the difference in vegetation height along the transmission line with the maximum flame height. When the wildfire bridging method is smoke bridging, the breakdown voltage of the flame zone is calculated based on the breakdown field strength correction value of the flame zone and the maximum flame height; the breakdown voltage of the smoke zone is calculated based on the breakdown field strength correction value of the smoke zone, the maximum flame height and the difference in vegetation height of the transmission line; the breakdown voltage of the flame zone and the breakdown voltage of the smoke zone are superimposed to obtain the line flame breakdown voltage; When the wildfire bridging method is flame bridging, the line flame breakdown voltage is calculated based on the flame zone breakdown field strength correction value and the difference in vegetation height of the transmission line. When the flame breakdown voltage of the line is greater than the working phase voltage threshold of the line, the vegetation should be cleared of tree obstructions.

2. The tree barrier detection method based on tree-line phase-ground penetration risk according to claim 1, characterized in that, The step of simulating fire combustion in the target transmission line area to generate maximum flame height and flame temperature distribution data includes: Acquire vegetation height, vegetation canopy density, and environmental parameters in the target transmission line area; The flame spread rate is determined based on the vegetation type and the environmental parameters. The calorific value of the combustible material is determined according to the preset calorific value comparison table and the vegetation type. Based on the vegetation species, determine the factors affecting combustible load in the vegetation height and the vegetation canopy density; The combustible load is calculated based on the factors affecting the combustible load and the preset weighting coefficients. Based on the vegetation height difference of the transmission line, the flame spread rate, the calorific value of the combustibles, and the combustible load, a fire line combustion simulation was performed in the target transmission line area to obtain the maximum flame height and fire line intensity. Based on the maximum flame height and the fire line intensity, determine the flame temperature distribution data.

3. The tree barrier detection method based on tree-line phase-ground penetration risk according to claim 2, characterized in that, The step of determining the flame temperature distribution data based on the maximum flame height and the fire line intensity includes: Obtain the highest monthly temperature in the target transmission line area during the peak wildfire season; Based on the fire intensity and the difference in vegetation height along the transmission line, the temperature rise correction value at the conductor is calculated, and the monthly maximum temperature in the target transmission line area during the peak wildfire season is corrected using the temperature rise correction value at the conductor, so as to obtain the highest temperature of the flame at the conductor. The flame top temperature rise correction value is calculated based on the fire intensity and the maximum flame height, and the monthly maximum temperature in the target transmission line area during the peak wildfire season is corrected using the flame top temperature rise correction value to obtain the maximum flame top temperature. The flame temperature distribution data is determined based on the highest temperature of the flame at the conductor and the highest temperature at the flame tip.

4. The tree barrier detection method based on tree-line phase ground penetration risk according to claim 3, characterized in that, The step of determining the breakdown field strength correction values ​​for the flame zone and the smoke zone based on the vegetation type, altitude, and flame temperature distribution data includes: The correction value for the breakdown field strength in the flame zone is determined based on the vegetation type. Determine the altitude correction factor based on the altitude; Determine the flame temperature correction coefficient based on the flame temperature distribution data; Based on the altitude correction coefficient and the flame temperature correction coefficient, a comprehensive correction coefficient is derived by coupling altitude with the degree of weakening of air insulation strength by flame. The preset benchmark breakdown field strength of the smoke and dust region is corrected based on the comprehensive correction coefficient, and the corrected value of the breakdown field strength of the smoke and dust region is obtained.

5. The tree barrier detection method based on tree-line phase-ground penetration risk according to claim 4, characterized in that, The method of determining the wildfire bridging method by comparing the difference in vegetation height along the transmission line with the maximum flame height includes: Compare the difference between the maximum flame height and the vegetation height along the power transmission line; When the maximum flame height is less than or equal to the difference in vegetation height between the transmission line and the fire line, the fire bridging method is determined to be smoke bridging. When the maximum flame height is greater than the difference in vegetation height between the transmission line and the fire line, the fire bridging method is determined to be flame bridging.

6. The tree barrier detection method based on tree-line phase-ground penetration risk according to claim 5, characterized in that, When the wildfire bridging method is smoke bridging, the line flame breakdown voltage is calculated according to the following formula: In the formula, This refers to the voltage at which the line is broken down by flame. This is the correction value for the penetration field strength in the flame zone; This is the correction value for the breakdown field strength in the smoke and dust region; Maximum flame height; The difference in vegetation height between power transmission lines.

7. The tree barrier detection method based on tree-line phase-ground penetration risk according to claim 5, characterized in that, When the wildfire bridging method is flame bridging, the line flame breakdown voltage is calculated according to the following formula: In the formula, This refers to the voltage at which the line is broken down by flame. This is the correction value for the penetration field strength in the flame zone; The difference in vegetation height between power transmission lines.

8. A tree barrier detection device based on treeline phase-ground penetration risk, characterized in that, include: The system includes a data acquisition module, a combustion simulation module, a breakdown field strength calculation module, a wildfire bridging method judgment module, a first breakdown voltage calculation module, a second breakdown voltage calculation module, and a tree obstacle clearing module. The data acquisition module is used to acquire the line working phase voltage threshold, altitude, vegetation height difference and vegetation type of the target transmission line area; The combustion simulation module is used to simulate fire line combustion in the target transmission line area to generate maximum flame height and flame temperature distribution data. The breakdown field strength calculation module is used to determine the breakdown field strength correction value of the flame zone and the breakdown field strength correction value of the smoke zone based on the vegetation type, the altitude and the flame temperature distribution data, respectively. The wildfire bridging method determination module is used to determine the wildfire bridging method by comparing the difference in vegetation height between the power transmission line and the maximum flame height. The first breakdown voltage calculation module is used to calculate the breakdown voltage of the flame zone based on the breakdown field strength correction value of the flame zone and the maximum flame height when the wildfire bridging method is smoke bridging; to calculate the breakdown voltage of the smoke zone based on the breakdown field strength correction value of the smoke zone, the maximum flame height and the difference in vegetation height of the transmission line; and to obtain the line flame breakdown voltage by superimposing the breakdown voltage of the flame zone and the breakdown voltage of the smoke zone. The second breakdown voltage calculation module is used to calculate the line flame breakdown voltage based on the breakdown field strength correction value of the flame zone and the difference in vegetation height of the transmission line when the wildfire bridging method is flame bridging. The tree obstacle removal module is used to remove tree obstacles from vegetation when the line flame breakdown voltage is greater than the line working phase voltage threshold.

9. A terminal device, characterized in that, The method includes a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein when the processor executes the computer program, it implements the tree barrier detection method based on tree-line phase-ground penetration risk as described in any one of claims 1-7.

10. A computer-readable storage medium, characterized in that, include: A stored computer program, wherein, when the computer program is executed, it controls the device containing the computer-readable storage medium to perform the tree barrier detection method based on tree-line phase-ground penetration risk as described in any one of claims 1-7.

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