A method, device, equipment and medium for detecting icing thickness of a mountainous power distribution line

Abstract

The application discloses a mountainous distribution line icing thickness detection method, device, equipment and medium, and is used for solving the technical problem of large error of a conventional icing thickness detection method. The application comprises the following steps: collecting a real-time pressure value of a distribution line conductor after icing through a pressure sensor; the pressure sensor is installed between a tower and an insulator column of the distribution line; calculating a conductor vertical specific load and a conductor horizontal stress of the distribution line according to the real-time pressure value; calculating a vertical span after icing of the conductor by using the conductor vertical specific load and the conductor horizontal stress; and calculating an icing thickness of the distribution line by using the real-time pressure value, the vertical span and attribute information of the distribution line.

Description

Technical Field

[0001] This invention relates to the field of conductor icing detection technology, and in particular to a method, device, equipment and medium for detecting the icing thickness of power distribution lines in mountainous areas. Background Technology

[0002] Icing on overhead lines can easily lead to serious accidents such as insulator flashover, line damage, line breaks, and tower collapses, posing a serious threat to the safe and stable operation of the power system. Traditional methods for detecting line icing include establishing observation stations and manual observation; however, manual observation has drawbacks such as low efficiency, high cost, and limited coverage. Currently, commonly used methods for online monitoring of icing on high-voltage transmission lines in China's power grid include image methods and mechanical measurement methods. Image methods determine the degree of icing by observing the icing state of the line, but quantitatively measuring the icing thickness is difficult, and monitoring camera lenses are often obstructed by ice in severe weather. The tension-tilt method uses the axial tension of the insulator string at the line end, the tilt angle of the conductor suspension point, and the wind deflection angle to calculate the icing thickness, but its application requires very accurate angle measurements. The tension-tilt method uses tension sensors instead of the ball joint rings of the insulators, and uses angle and tension sensors to measure the tilt angle of the suspended insulator string, the wind deflection angle, and the conductor-ground load, combined with meteorological sensors to measure meteorological parameters such as wind speed and direction, to further estimate the conductor icing condition. The aforementioned methods have played a crucial role in detecting icing thickness on transmission lines. While methods for detecting icing thickness in plains areas exist in research on related distribution lines, the significant elevation differences and span variations in mountainous regions, along with changes in vertical span length, make conventional icing thickness detection methods prone to large errors. Summary of the Invention

[0003] This invention provides a method, device, equipment, and medium for detecting the ice thickness of power distribution lines in mountainous areas, which solves the technical problem of large errors in conventional ice thickness detection methods.

[0004] This invention provides a method for detecting the icing thickness of power distribution lines in mountainous areas, comprising:

[0005] The pressure sensor collects the real-time pressure value of the power distribution line conductors after they are covered with ice; the pressure sensor is installed between the tower and the insulator post of the power distribution line.

[0006] Calculate the vertical load ratio and horizontal stress of the conductors of the power distribution line based on the real-time pressure value;

[0007] The vertical span of the conductor after icing is calculated using the conductor's vertical load ratio and horizontal stress.

[0008] The icing thickness of the power distribution line is calculated using the real-time pressure value, the vertical span, and the attribute information of the power distribution line.

[0009] Optionally, the step of calculating the vertical load ratio and horizontal stress of the conductors of the power distribution line based on the real-time pressure value includes:

[0010] Obtain the horizontal stress, vertical specific load, and surface temperature of the un-iced conductor when it is not covered with ice.

[0011] Real-time acquisition of the surface temperature of the ice-covered conductor during icing;

[0012] Obtain the span, height difference, and elevation angle difference of the tower;

[0013] A first vertical specific load and conductor horizontal stress relationship is established using the span, the height difference, the height angle difference, the horizontal stress of the un-iced conductor, the vertical specific load of the un-iced conductor, the surface temperature of the un-iced conductor, and the surface temperature of the iced conductor.

[0014] A second vertical load ratio and conductor horizontal stress relationship are established using the span, the elevation difference, the elevation angle difference, and the real-time pressure value.

[0015] The vertical load and horizontal stress of the conductor in the power distribution line are calculated using the first vertical load ratio and the second vertical load ratio and the second vertical load ratio and the second vertical stress ratio.

[0016] Optionally, the step of calculating the vertical span of the conductor after icing using the vertical load ratio and the horizontal stress of the conductor includes:

[0017] A rectangular coordinate system is established with one end of the conductor of the power distribution line as the origin;

[0018] The coordinates of the other end of the conductor and the coordinates of the maximum vertical arc point of the conductor are obtained according to the rectangular coordinate system.

[0019] The vertical span of the conductor after icing is calculated using the span, the elevation difference, the elevation angle difference, the endpoint coordinates, the coordinates of the maximum point of the vertical arc, the vertical load of the conductor, and the horizontal stress of the conductor.

[0020] Optionally, the attribute information of the power distribution line includes insulator mass, conductor mass per unit length, conductor cross-sectional area, and conductor diameter; the step of calculating the icing thickness of the power distribution line using the real-time pressure value, the vertical span, and the attribute information of the power distribution line includes:

[0021] The icing thickness of the power distribution line is calculated using the insulator mass, the conductor mass per unit length, the conductor cross-sectional area, the conductor diameter, the real-time pressure value, and the vertical span.

[0022] The present invention also provides a device for detecting the icing thickness of power distribution lines in mountainous areas, comprising:

[0023] A real-time pressure value acquisition module is used to acquire the real-time pressure value of the power distribution line conductors after icing through a pressure sensor; the pressure sensor is installed between the tower and the insulator post of the power distribution line.

[0024] The conductor vertical load and conductor horizontal stress calculation module is used to calculate the conductor vertical load and conductor horizontal stress of the power distribution line based on the real-time pressure value.

[0025] The vertical span calculation module is used to calculate the vertical span of the conductor after it is covered with ice, using the vertical specific load of the conductor and the horizontal stress of the conductor.

[0026] The icing thickness calculation module is used to calculate the icing thickness of the power distribution line using the real-time pressure value, the vertical span, and the attribute information of the power distribution line.

[0027] Optionally, the conductor vertical load and conductor horizontal stress calculation module includes:

[0028] The un-iced data acquisition submodule is used to acquire the horizontal stress, vertical load ratio, and surface temperature of the un-iced conductor when it is not iced.

[0029] The icing surface temperature acquisition submodule is used to acquire the icing surface temperature of the conductor in real time.

[0030] A submodule for obtaining span, height difference, and elevation angle difference is used to obtain the span, height difference, and elevation angle difference of the tower.

[0031] The first vertical load ratio and conductor horizontal stress relationship establishment submodule is used to establish the first vertical load ratio and conductor horizontal stress relationship using the span, the height difference, the height angle difference, the horizontal stress of the un-iced conductor, the un-iced vertical load ratio, the un-iced surface temperature and the iced surface temperature;

[0032] The second vertical load ratio and conductor horizontal stress relationship establishment submodule is used to establish the second vertical load ratio and conductor horizontal stress relationship using the span, the height difference, the height angle difference and the real-time pressure value;

[0033] The conductor vertical load ratio and conductor horizontal stress calculation submodule is used to calculate the conductor vertical load ratio and conductor horizontal stress of the distribution line using the first vertical load ratio and conductor horizontal stress relationship formula and the second vertical load ratio and conductor horizontal stress relationship formula.

[0034] Optionally, the vertical span calculation module includes:

[0035] A rectangular coordinate system establishment submodule is used to establish a rectangular coordinate system with one end of the conductor of the power distribution line as the origin;

[0036] The endpoint coordinate and maximum value point coordinate acquisition submodule is used to obtain the endpoint coordinates of the other endpoint of the conductor and the coordinates of the maximum value point of the vertical arc of the conductor according to the rectangular coordinate system;

[0037] The vertical span calculation submodule is used to calculate the vertical span of the conductor after it is covered with ice, using the span, the height difference, the height angle difference, the endpoint coordinates, the coordinates of the maximum point of the vertical arc, the vertical load of the conductor, and the horizontal stress of the conductor.

[0038] Optionally, the attribute information of the power distribution line includes insulator mass, conductor mass per unit length, conductor cross-sectional area, and conductor diameter; the icing thickness calculation module includes:

[0039] The ice thickness calculation submodule is used to calculate the ice thickness of the power distribution line using the insulator mass, the conductor mass per unit length, the conductor cross-sectional area, the conductor diameter, the real-time pressure value, and the vertical span.

[0040] The present invention also provides an electronic device, the device comprising a processor and a memory:

[0041] The memory is used to store program code and transmit the program code to the processor;

[0042] The processor is used to execute the method for detecting the icing thickness of power distribution lines in mountainous areas as described above, according to the instructions in the program code.

[0043] The present invention also provides a computer-readable storage medium for storing program code for executing the method for detecting the icing thickness of power distribution lines in mountainous areas as described in any of the preceding claims.

[0044] As can be seen from the above technical solution, the present invention has the following advantages: The method for detecting the icing thickness of power distribution lines in mountainous areas specifically includes: collecting real-time pressure values ​​of power distribution line conductors after icing using a pressure sensor; installing the pressure sensor between the power distribution line towers and insulator posts; calculating the vertical load ratio and horizontal stress of the power distribution line conductors based on the real-time pressure values; calculating the vertical span of the conductors after icing using the vertical load ratio and horizontal stress; and calculating the icing thickness of the power distribution line using the real-time pressure values, vertical span, and power distribution line attribute information. This invention, by collecting pressure data from the power distribution line using a pressure sensor and combining it with the vertical span of the power distribution line conductors, can effectively calculate the icing state of power distribution lines in mountainous terrain, thereby improving the accuracy of icing thickness detection for power distribution lines in mountainous areas. Attached Figure Description

[0045] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0046] Figure 1 A flowchart illustrating the steps of a method for detecting ice thickness on power distribution lines in mountainous areas, provided by an embodiment of the present invention;

[0047] Figure 2 This is a schematic diagram showing the connection between the insulator post, pressure sensor, and tower provided in an embodiment of the present invention;

[0048] Figure 3 A flowchart illustrating the steps of a method for detecting ice thickness on power distribution lines in mountainous areas, as provided in another embodiment of the present invention;

[0049] Figure 4 A schematic diagram of the oblique parabolic state of the conductor;

[0050] Figure 5 This is a schematic diagram of a vertical plane power distribution line;

[0051] Figure 6 This is a structural block diagram of a device for detecting the ice thickness of power distribution lines in mountainous areas, provided in an embodiment of the present invention. Detailed Implementation

[0052] This invention provides a method, apparatus, equipment, and medium for detecting the ice thickness of power distribution lines in mountainous areas, which solves the technical problem of large errors in conventional ice thickness detection methods.

[0053] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0054] Please see Figure 1 , Figure 1 A flowchart illustrating the steps of a method for detecting the icing thickness of power distribution lines in mountainous areas, provided in an embodiment of the present invention.

[0055] The present invention provides a method for detecting the ice thickness of power distribution lines in mountainous areas, which may specifically include the following steps:

[0056] Step 101: Collect the real-time pressure value of the power distribution line conductors after icing using a pressure sensor; the pressure sensor is installed between the tower and the insulator post of the power distribution line.

[0057] A power distribution line refers to a line that carries electricity from a step-down substation to a distribution transformer or vice versa. Power distribution lines with voltages ranging from 3.6kV to 40.5kV are called high-voltage distribution lines; those with voltages not exceeding 1kV, frequencies not exceeding 1000Hz, and DC voltages not exceeding 1500V are called low-voltage distribution lines. This invention is primarily applicable to the detection of icing thickness on 10kV distribution lines in mountainous areas.

[0058] In this embodiment of the invention, a pressure sensor can be installed between the tower and the insulator post of the power distribution line to detect the real-time pressure value of the power distribution line being covered by ice.

[0059] In one example, such as Figure 2 As shown, a pressure sensor can be fixed between the tower and the insulator post, and welded to the intermediate iron post as the base of the insulator post, thus rigidly connecting the pressure sensor, the insulator post, and the tower. Furthermore, micro-weather sensors can be placed around the tower to detect temperatures before and after icing.

[0060] Step 102: Calculate the vertical load ratio and horizontal stress of the conductors of the power distribution line based on the real-time pressure value;

[0061] Specific load refers to the load per unit length of overhead line, while vertical specific load is the specific load that acts vertically downwards.

[0062] Conductor stress refers to the internal force per unit cross-sectional area of ​​a conductor. A section of conductor suspended between two towers will experience an internal force at every cross-section under loads such as its own weight, ice weight, and wind pressure. This invention primarily uses the horizontal stress of the conductor in its calculations.

[0063] In this embodiment of the invention, after obtaining the real-time pressure value, the vertical load ratio of the conductor and the horizontal stress of the conductor in the power distribution line can be calculated based on the real-time pressure value.

[0064] Step 103: Calculate the vertical span of the conductor after it is covered with ice using the vertical load ratio and the horizontal stress of the conductor.

[0065] Vertical span refers to the horizontal distance between the lowest points of the conductors on both sides of the tower.

[0066] In this embodiment of the invention, after obtaining the vertical load ratio and horizontal stress of the conductor, the vertical span of the conductor after icing can be calculated using the vertical load ratio and horizontal stress of the conductor.

[0067] Step 104: Calculate the icing thickness of the power distribution line using the real-time pressure value, the vertical span, and the attribute information of the power distribution line.

[0068] In this embodiment of the invention, after calculating the vertical span near the location where the pressure sensor is installed on the power distribution line, the icing thickness of the power distribution line can be calculated using the real-time pressure value of the pressure sensor, the vertical span, and the attribute information of the power distribution line.

[0069] This invention collects pressure data from power distribution lines using pressure sensors and combines this data with the vertical span of the power distribution line conductors to calculate the icing status of power distribution lines in mountainous terrain, thereby improving the accuracy of icing thickness detection for power distribution lines in mountainous areas.

[0070] Please see Figure 3 , Figure 3 A flowchart illustrating a method for detecting ice thickness on power distribution lines in mountainous areas, as provided in another embodiment of the present invention. Specifically, it may include the following steps:

[0071] Step 301: Collect the real-time pressure value of the power distribution line conductor after icing by using a pressure sensor; the pressure sensor is installed between the tower and the insulator post of the power distribution line.

[0072] Step 302: Calculate the vertical load ratio and horizontal stress of the conductors of the power distribution line based on the real-time pressure value;

[0073] In this embodiment of the invention, after obtaining the real-time pressure value, the vertical load ratio of the conductor and the horizontal stress of the conductor in the power distribution line can be calculated based on the real-time pressure value.

[0074] In one example, the step of calculating the vertical load ratio and horizontal stress of the conductors of the power distribution line based on the real-time pressure value may specifically include the following sub-steps:

[0075] S21, obtain the horizontal stress, vertical load ratio, and surface temperature of the un-iced conductor when it is not covered with ice;

[0076] S22, real-time acquisition of the icing surface temperature of the conductor when it is icing;

[0077] S23, obtain the span, height difference, and elevation angle difference of the tower;

[0078] S24, using the span, the height difference, the height angle difference, the horizontal stress of the un-iced conductor, the vertical specific load of the un-iced conductor, the surface temperature of the un-iced conductor, and the surface temperature of the iced conductor, a first vertical specific load and a horizontal stress relationship between the conductor are established;

[0079] S25, using the span, the height difference, the height angle difference, and the real-time pressure value, establish a second vertical specific load and conductor horizontal stress relationship;

[0080] S26, the vertical load and horizontal stress of the conductor of the power distribution line are calculated using the first vertical load ratio and the conductor horizontal stress relationship and the second vertical load ratio and the conductor horizontal stress relationship.

[0081] In practical implementation, the horizontal stress, vertical specific load, and surface temperature of the un-iced conductor can be obtained to establish the conductor's state equation, which is as follows:

[0082]

[0083] Wherein, δ0 is the vertical load of the conductor when it is not covered with ice, σ0 is the horizontal stress of the conductor when it is not covered with ice, t0 is the surface temperature of the conductor when it is not covered with ice, t is the surface temperature of the conductor when it is covered with ice, E is the elastic coefficient of the conductor, α is the coefficient of conductor expansion, β is the height angle difference, l is the span, σ is the horizontal stress of the conductor after it is covered with ice, and δ is the vertical load of the conductor after it is covered with ice.

[0084] Based on the known δ0, σ0, t0, and the surface temperature of the conductor when it is covered with ice, the conductor's equation of state becomes the relationship between the first vertical specific load and the horizontal stress of the conductor.

[0085] Next, the relationship between the real-time pressure value and the vertical load and horizontal stress of the conductor is constructed as follows:

[0086]

[0087] Where l1 and l2 are the spans on the left and right sides of the tower, respectively; h1 and h2 are the height differences on the left and right sides of the tower, respectively; β1 and β2 are the angle differences on the left and right sides of the tower, respectively; S is the cross-sectional area of ​​the conductor; and G is the mass of the insulator.

[0088] Substituting the obtained real-time pressure value into the above formula, the above formula can be converted into a relationship between the second vertical load and the horizontal stress of the conductor.

[0089] By combining the first vertical load ratio and the second vertical load ratio and the horizontal stress of the conductor, the vertical load ratio and the horizontal stress of the conductor can be calculated.

[0090] Step 303: Calculate the vertical span of the conductor after icing using the vertical load ratio and the horizontal stress of the conductor.

[0091] In this embodiment of the invention, after obtaining the vertical load ratio and horizontal stress of the conductor, the vertical span of the conductor after icing can be calculated using the vertical load ratio and horizontal stress of the conductor.

[0092] In one example, the step of calculating the vertical span of the conductor after icing using the conductor's vertical load ratio and horizontal stress may include the following sub-steps:

[0093] S31, establish a rectangular coordinate system with one end of the conductor of the power distribution line as the origin;

[0094] S32, obtain the coordinates of the other end of the conductor and the coordinates of the maximum value point of the vertical arc of the conductor according to the rectangular coordinate system;

[0095] S33, using the span, the elevation difference, the elevation angle difference, the endpoint coordinates, the coordinates of the maximum point of the vertical arc, the vertical load of the conductor, and the horizontal stress of the conductor, calculate the vertical span of the conductor after it is covered with ice.

[0096] In specific implementations, such as Figure 4 As shown, a parabolic sloping model that meets engineering requirements is applied to establish the state equation of a traverse system with large span differences and elevation differences in mountainous areas. A rectangular coordinate system is established with the left endpoint O of the traverse system as the origin, and the coordinates of the point A with the maximum sag are (l / 2, δl). 2 / 8σcosβ), the coordinates of the right endpoint B of the conductor are (l, h). The two endpoints and the point of maximum sag determine the equation of state of the oblique parabola of the conductor:

[0097]

[0098] Where x and y are the independent and dependent variables, respectively, and h is the elevation difference.

[0099] Differentiate the equation of state for the oblique parabola of the conductor, such as Figure 5 As shown, by calculating the distance from the lowest point of the conductors on both sides to the middle tower, the expression for the vertical span is obtained as follows:

[0100]

[0101] Among them, l v This refers to the vertical spacing.

[0102] The vertical span of a power distribution line can be calculated based on the vertical span expression.

[0103] Step 304: Calculate the icing thickness of the power distribution line using the insulator mass, the conductor mass per unit length, the conductor cross-sectional area, the conductor diameter, the real-time pressure value, and the vertical span.

[0104] In this embodiment of the invention, after the conductor is covered with ice, its ice-weight ratio can be expressed as:

[0105]

[0106] Where, δ i Where F is the ice-to-weight ratio load, and G is the real-time pressure value measured by the pressure sensor. j Let m be the mass of the insulator, g be the mass of the conductor per unit length, S be the acceleration due to gravity, and l be the cross-sectional area of ​​the conductor. v This refers to the vertical spacing.

[0107] ice weight ratio δ i The relationship between the equivalent icing thickness *b* of the conductor and the standard cylindrical rime ice accretion is as follows:

[0108]

[0109] Where d is the diameter of the conductor and b is the equivalent ice thickness of the conductor.

[0110] From the above formula for ice-to-weight ratio and ice-to-weight ratio δ i The relationship between the equivalent icing thickness *b* of conductors with standard cylindrical rime ice can be used to derive the expression for the icing thickness of power distribution lines:

[0111]

[0112] Therefore, in practical applications, the insulator mass, the conductor mass per unit length, the conductor cross-sectional area, and the conductor diameter can be collected, and the ice thickness of the power distribution line can be calculated by combining the real-time pressure value and the vertical span.

[0113] This invention collects pressure data from power distribution lines using pressure sensors and combines this data with the vertical span of the power distribution line conductors to calculate the icing status of power distribution lines in mountainous terrain, thereby improving the accuracy of icing thickness detection for power distribution lines in mountainous areas.

[0114] Please see Figure 6 , Figure 6 This is a structural block diagram of a device for detecting the ice thickness of power distribution lines in mountainous areas, provided in an embodiment of the present invention.

[0115] This invention provides a device for detecting the icing thickness of power distribution lines in mountainous areas, comprising:

[0116] The real-time pressure value acquisition module 601 is used to acquire the real-time pressure value of the power distribution line conductors after icing by means of a pressure sensor; the pressure sensor is installed between the tower and the insulator post of the power distribution line.

[0117] The conductor vertical load and conductor horizontal stress calculation module 602 is used to calculate the conductor vertical load and conductor horizontal stress of the power distribution line based on the real-time pressure value.

[0118] Vertical span calculation module 603 is used to calculate the vertical span of the conductor after icing using the vertical specific load of the conductor and the horizontal stress of the conductor.

[0119] The icing thickness calculation module 604 is used to calculate the icing thickness of the power distribution line using the real-time pressure value, the vertical span, and the attribute information of the power distribution line.

[0120] In this embodiment of the invention, the conductor vertical load ratio and conductor horizontal stress calculation module 602 includes:

[0121] The un-iced data acquisition submodule is used to acquire the horizontal stress, vertical load ratio, and surface temperature of the un-iced conductor when it is not iced.

[0122] The icing surface temperature acquisition submodule is used to acquire the icing surface temperature of the conductor in real time.

[0123] A submodule for obtaining span, height difference, and elevation angle difference is used to obtain the span, height difference, and elevation angle difference of the tower.

[0124] The first vertical load ratio and conductor horizontal stress relationship establishment submodule is used to establish the first vertical load ratio and conductor horizontal stress relationship using the span, the height difference, the height angle difference, the horizontal stress of the un-iced conductor, the un-iced vertical load ratio, the un-iced surface temperature and the iced surface temperature;

[0125] The second vertical load ratio and conductor horizontal stress relationship establishment submodule is used to establish the second vertical load ratio and conductor horizontal stress relationship using the span, the height difference, the height angle difference and the real-time pressure value;

[0126] The conductor vertical load ratio and conductor horizontal stress calculation submodule is used to calculate the conductor vertical load ratio and conductor horizontal stress of the distribution line using the first vertical load ratio and conductor horizontal stress relationship formula and the second vertical load ratio and conductor horizontal stress relationship formula.

[0127] In this embodiment of the invention, the vertical span calculation module 603 includes:

[0128] A rectangular coordinate system establishment submodule is used to establish a rectangular coordinate system with one end of the conductor of the power distribution line as the origin;

[0129] The endpoint coordinate and maximum value point coordinate acquisition submodule is used to obtain the endpoint coordinates of the other endpoint of the conductor and the coordinates of the maximum value point of the vertical arc of the conductor according to the rectangular coordinate system;

[0130] The vertical span calculation submodule is used to calculate the vertical span of the conductor after it is covered with ice, using the span, the height difference, the height angle difference, the endpoint coordinates, the coordinates of the maximum point of the vertical arc, the vertical load of the conductor, and the horizontal stress of the conductor.

[0131] In this embodiment of the invention, the attribute information of the power distribution line includes insulator mass, conductor mass per unit length, conductor cross-sectional area, and conductor diameter; the icing thickness calculation module 604 includes:

[0132] The ice thickness calculation submodule is used to calculate the ice thickness of the power distribution line using the insulator mass, the conductor mass per unit length, the conductor cross-sectional area, the conductor diameter, the real-time pressure value, and the vertical span.

[0133] This invention also provides an electronic device, the device including a processor and a memory:

[0134] The memory is used to store program code and transmit the program code to the processor;

[0135] The processor is used to execute the method for detecting the ice thickness of power distribution lines in mountainous areas according to the instructions in the program code.

[0136] This invention also provides a computer-readable storage medium for storing program code for executing the method for detecting ice thickness on power distribution lines in mountainous areas as described in this invention.

[0137] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0138] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0139] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, apparatus, or computer program products. Therefore, embodiments of the present invention can take the form of entirely hardware embodiments, entirely software embodiments, or embodiments combining software and hardware aspects. Furthermore, embodiments of the present invention can take the form of computer program products implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0140] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing terminal device to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal device, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0141] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing terminal device to operate in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0142] These computer program instructions can also be loaded onto a computer or other programmable data processing terminal equipment, causing a series of operational steps to be performed on the computer or other programmable terminal equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable terminal equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0143] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the embodiments of the present invention.

[0144] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.

[0145] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for detecting the icing thickness of power distribution lines in mountainous areas, characterized in that, include: The pressure sensor collects the real-time pressure value of the power distribution line conductors after they are covered with ice; the pressure sensor is installed between the tower and the insulator post of the power distribution line. Calculate the vertical load ratio and horizontal stress of the conductors of the power distribution line based on the real-time pressure value; The vertical span of the conductor after icing is calculated using the conductor's vertical load ratio and horizontal stress. The icing thickness of the power distribution line is calculated using the real-time pressure value, the vertical span, and the attribute information of the power distribution line. The step of calculating the vertical load ratio and horizontal stress of the conductors of the power distribution line based on the real-time pressure value includes: Obtain the horizontal stress, vertical specific load, and surface temperature of the un-iced conductor when it is not covered with ice. Real-time acquisition of the surface temperature of the ice-covered conductor during icing; Obtain the span, height difference, and elevation angle difference of the tower; A first vertical specific load and conductor horizontal stress relationship is established using the span, the height difference, the height angle difference, the horizontal stress of the un-iced conductor, the vertical specific load of the un-iced conductor, the surface temperature of the un-iced conductor, and the surface temperature of the iced conductor. A second vertical load ratio and conductor horizontal stress relationship are established using the span, the elevation difference, the elevation angle difference, and the real-time pressure value. The vertical load and horizontal stress of the conductor in the power distribution line are calculated using the first vertical load ratio and the second vertical load ratio and the second vertical load ratio and the second vertical stress ratio.

2. The method according to claim 1, characterized in that, The step of calculating the vertical span of the conductor after icing using the conductor's vertical load ratio and horizontal stress includes: A rectangular coordinate system is established with one end of the conductor of the power distribution line as the origin; The coordinates of the other end of the conductor and the coordinates of the maximum vertical arc point of the conductor are obtained according to the rectangular coordinate system. The vertical span of the conductor after icing is calculated using the span, the elevation difference, the elevation angle difference, the endpoint coordinates, the coordinates of the maximum point of the vertical arc, the vertical load of the conductor, and the horizontal stress of the conductor.

3. The method according to claim 1, characterized in that, The attribute information of the power distribution line includes insulator mass, conductor mass per unit length, conductor cross-sectional area, and conductor diameter; the step of calculating the icing thickness of the power distribution line using the real-time pressure value, the vertical span, and the attribute information of the power distribution line includes: The icing thickness of the power distribution line is calculated using the insulator mass, the conductor mass per unit length, the conductor cross-sectional area, the conductor diameter, the real-time pressure value, and the vertical span.

4. A device for detecting the icing thickness of power distribution lines in mountainous areas, characterized in that, include: A real-time pressure value acquisition module is used to acquire the real-time pressure value of the power distribution line conductors after icing through a pressure sensor; the pressure sensor is installed between the tower and the insulator post of the power distribution line. The conductor vertical load and conductor horizontal stress calculation module is used to calculate the conductor vertical load and conductor horizontal stress of the power distribution line based on the real-time pressure value. The vertical span calculation module is used to calculate the vertical span of the conductor after it is covered with ice, using the vertical specific load of the conductor and the horizontal stress of the conductor. An ice thickness calculation module is used to calculate the ice thickness of the power distribution line using the real-time pressure value, the vertical span, and the attribute information of the power distribution line. The conductor vertical load and conductor horizontal stress calculation module includes: The un-iced data acquisition submodule is used to acquire the horizontal stress, vertical load ratio, and surface temperature of the un-iced conductor when it is not iced. The icing surface temperature acquisition submodule is used to acquire the icing surface temperature of the conductor in real time. A submodule for obtaining span, height difference, and elevation angle difference is used to obtain the span, height difference, and elevation angle difference of the tower. The first vertical load ratio and conductor horizontal stress relationship establishment submodule is used to establish the first vertical load ratio and conductor horizontal stress relationship using the span, the height difference, the height angle difference, the horizontal stress of the un-iced conductor, the un-iced vertical load ratio, the un-iced surface temperature and the iced surface temperature; The second vertical load ratio and conductor horizontal stress relationship establishment submodule is used to establish the second vertical load ratio and conductor horizontal stress relationship using the span, the height difference, the height angle difference and the real-time pressure value; The conductor vertical load ratio and conductor horizontal stress calculation submodule is used to calculate the conductor vertical load ratio and conductor horizontal stress of the distribution line using the first vertical load ratio and conductor horizontal stress relationship formula and the second vertical load ratio and conductor horizontal stress relationship formula.

5. The apparatus according to claim 4, characterized in that, The vertical span calculation module includes: A rectangular coordinate system establishment submodule is used to establish a rectangular coordinate system with one end of the conductor of the power distribution line as the origin; The endpoint coordinate and maximum value point coordinate acquisition submodule is used to obtain the endpoint coordinates of the other endpoint of the conductor and the coordinates of the maximum value point of the vertical arc of the conductor according to the rectangular coordinate system; The vertical span calculation submodule is used to calculate the vertical span of the conductor after it is covered with ice, using the span, the height difference, the height angle difference, the endpoint coordinates, the coordinates of the maximum point of the vertical arc, the vertical load of the conductor, and the horizontal stress of the conductor.

6. The apparatus according to claim 4, characterized in that, The attribute information of the power distribution line includes insulator mass, conductor mass per unit length, conductor cross-sectional area, and conductor diameter; The ice thickness calculation module includes: The ice thickness calculation submodule is used to calculate the ice thickness of the power distribution line using the insulator mass, the conductor mass per unit length, the conductor cross-sectional area, the conductor diameter, the real-time pressure value, and the vertical span.

7. An electronic device, characterized in that, The device includes a processor and a memory: The memory is used to store program code and transmit the program code to the processor; The processor is used to execute the method for detecting ice thickness on power distribution lines in mountainous areas according to any one of the claims 1-3, based on the instructions in the program code.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium is used to store program code for executing the method for detecting ice thickness on power distribution lines in mountainous areas as described in any one of claims 1-3.

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