Method and system for predicting inter-phase flashover position of ice shedding jump on compact transmission line

Abstract

The application discloses a compact transmission line ice shedding jump phase-to-phase flashover position prediction method, which comprises the following steps: according to compact transmission line design data, a numerical simulation model is established and simulation analysis is carried out to obtain displacement conditions of each phase conductor in the ice shedding jump process; the phase-to-phase gap between each phase in the ice shedding jump process is calculated to obtain the minimum phase-to-phase gap of any two phase conductors at each time step after ice shedding and the position of the minimum phase-to-phase gap; the probability of the position of the minimum phase-to-phase gap is calculated to determine the position where the phase-to-phase flashover is most likely to occur after ice shedding. The application carries out in-depth research and analysis on the compact transmission line, obtains a probability calculation formula of the position of the minimum phase-to-phase gap of the two phase conductors of the compact transmission line, and provides protection for reliable operation when the compact transmission line occurs ice shedding jump and causes phase-to-phase flashover trip failure.

Description

Technical Field

[0001] This invention relates to the technical field of overhead transmission lines, and more particularly to a method and system for predicting the location of phase-to-phase flashover during de-icing in compact transmission lines. Background Technology

[0002] Compact transmission lines, by optimizing conductor arrangement and reducing phase spacing, increase natural transmission power and compress line corridor width, resulting in significant economic benefits. However, when ice-free jumping occurs on compact lines, the small phase spacing makes them prone to faults such as phase-to-phase flashover tripping, impacting the reliable operation of the line. Although many scholars have studied conductor ice-free jumping, most studies focus on single-phase conductors, and the research is largely limited to conductor jumping height and tension, lacking in-depth analysis specifically for compact transmission lines. Summary of the Invention

[0003] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0004] Given that there has been no in-depth research and analysis on compact transmission lines, this invention is proposed.

[0005] Therefore, the purpose of this invention is to provide a method and system for predicting the location of phase-to-phase flashover during de-icing in compact transmission lines.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] In a first aspect, embodiments of the present invention provide a method for predicting the location of interphase flashover during de-icing jumps in compact transmission lines, comprising: establishing a numerical simulation model and performing simulation analysis based on the design data of the compact transmission line to obtain the displacement of each phase conductor during the de-icing jump process;

[0008] Calculate the phase gap between each phase during the ice-breaking jump process, and obtain the minimum phase gap and its position between any two phase conductors at each time step after the ice-breaking occurs.

[0009] Calculate the probability of the location where the minimum phase gap occurs, and determine the location where phase flashover is most likely to occur after de-icing.

[0010] As described in the present invention, the method for predicting the location of phase-to-phase flashover during de-icing in compact transmission lines includes: the design data of the compact transmission line,

[0011] Length of tension sections of the railway line and span distance of each span;

[0012] The interphase distance l between conductors under gravity load only AB l AC and l BC and the included angle θ A θ B and θ C ;

[0013] The location of the phase spacers installed on the conductor, as well as the length, cross-sectional area, and elastic modulus of the phase spacers.

[0014] As described in this invention, the method for predicting the location of phase-to-phase flashover during de-icing in compact transmission lines includes: establishing a numerical simulation model and performing simulation analysis.

[0015] The conductor is simulated using a LINK10 rod element that is only under tension and not compression.

[0016] Perform iterative shape finding of the conductor. After the shape finding is completed, check whether the sag of the model is consistent with the sag of the actual conductor to confirm whether the iterative shape finding of the conductor is correct.

[0017] After confirming that the iterative shape finding of the conductor is correct, model the insulator and the phase spacer.

[0018] The insulators are simulated using rigid rod MPC184 constraint elements, while the phase spacers are simulated using COMBBIN39 spring elements and MASS21 mass elements. The parameters of the COMBBIN39 spring elements are also set to consider the nonlinear characteristics of the phase spacers.

[0019] As described in the compact transmission line de-icing skip phase-to-phase flashover location prediction method of the present invention, the nonlinear characteristics of the phase-to-phase spacer include:

[0020] According to the column stability theory, the critical load for the interphase spacer under compression is p. cr p cr It can be represented as:

[0021]

[0022] Where π is the mathematical constant Pi, and E s I is the elastic modulus of the interphase spacer. s Let l be the moment of inertia of the cross section of the interphase spacer. s This represents the length of the interphase spacer.

[0023] According to Hooke's theorem, the tension or compression of the spacer bar between phases is less than the critical load p of the spacer bar. cr At that time, the supporting force F of the interphase spacer is:

[0024]

[0025] Among them, A s Let be the cross-sectional area of ​​the interphase spacer, and Δx be the end displacement of the interphase spacer.

[0026] The spacer bar is subjected to compression greater than or equal to the critical load p of the spacer bar. cr At that time, the buckling state of the interphase spacer was stable, and the pressure-end displacement (p-Δx) relationship was derived using the large deflection theory as follows:

[0027]

[0028] Where p is the pressure on the interphase spacer bar, K is the first complete elliptic integral, F is the second complete elliptic integral, and θ is the angle between the deformations of the tangents at the ends of the interphase spacer bars.

[0029] As described in this invention, the method for predicting the location of interphase flashover during de-icing jumps in compact transmission lines includes: calculating the interphase gaps between each phase during the de-icing jump process, and obtaining the minimum interphase gap and its location between any two phase conductors at each time step after de-icing occurs.

[0030] The compact transmission line is designed with an inverted triangle configuration, with the upper conductors being phases A and C, and the lower conductor being phase B.

[0031] Icing, load, and damping simulations were performed, considering the horizontal wind load borne by the numerical simulation model during the simulation process. The phase gap between any two phase conductors at each corresponding node at each time point after de-icing was calculated as follows:

[0032]

[0033]

[0034]

[0035] d min (t,x)=min[d AB (t), d BC (t), d AC (t)]

[0036] Where t is time, x is position, and d is the horizontal distance from the left end of the span along the track direction. AB (t,x),d BC (t,x) and d AC (t,x) represents the AB phase gap, BC phase gap, and AC phase gap at position x at time t, and d min (t,x) represents the minimum value of the AB phase gap, BC phase gap, and AC phase gap at time t, and its location. A (t,x) and y A(t,x) represents the horizontal and vertical displacements of position A at time t, where x is the position. B (t,x) and y B (t,x) represents the horizontal and vertical displacements of position B at time t, where x is the position. C (t,x) and y C (t,x) represents the horizontal and vertical displacements of position C at time t;

[0037] Statistically determine the minimum gap and position of the entire span of the conductor within each jump time step.

[0038] As described in the present invention, the method for predicting the location of phase-to-phase flashover during de-icing in compact transmission lines includes: calculating the probability of the location where the minimum phase-to-phase gap occurs, etc.

[0039] Let x be the number of times the minimum interphase gap occurs at a position less than the safe interphase distance. Let P(x) be the probability of the minimum interphase gap occurring at a given position:

[0040]

[0041] Where ∑n(x) is based on d min (t,x) represents the total number of times the minimum phase gap, which is less than the safe phase distance, occurs at position x. Δt is the simulation calculation time step, and T is the total simulation calculation time for conductor ice-free jumping.

[0042] As described in the compact transmission line de-icing jump phase-to-phase flashover location prediction method of the present invention, the larger the value of P(x), the higher the probability of de-icing jump phase-to-phase flashover occurring at that location.

[0043] Secondly, embodiments of the present invention provide a compact transmission line de-icing skip phase-to-phase flashover location prediction system, comprising,

[0044] The simulation analysis module establishes a numerical simulation model and performs simulation analysis based on the design data of compact transmission lines to obtain the displacement of each phase conductor during the ice-free jumping process.

[0045] The calculation module calculates the phase gap between each phase during the ice-breaking jump, and obtains the minimum phase gap and position of any two phase conductors at each time step after the ice-breaking occurs.

[0046] The judgment module calculates the probability of the location where the minimum phase gap occurs and determines the location where phase flashover is most likely to occur after de-icing.

[0047] Thirdly, embodiments of the present invention provide a computing device, including:

[0048] Memory and processor;

[0049] The memory is used to store computer-executable instructions, and the processor is used to execute the computer-executable instructions. When the one or more programs are executed by the one or more processors, the one or more processors implement the compact transmission line de-icing skip phase-to-phase flashover location prediction method as described in any embodiment of the present invention.

[0050] Fourthly, embodiments of the present invention provide a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, implement the compact transmission line de-icing skip phase flashover location prediction method.

[0051] The beneficial effects of this invention: This invention conducts in-depth research and analysis on compact transmission lines and derives a probability calculation formula for the location of the minimum phase gap between two phase conductors in compact transmission lines, providing a guarantee for reliable operation when ice-free jumping occurs in compact lines, causing phase-to-phase flashover tripping faults. Attached Figure Description

[0052] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments 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. Wherein:

[0053] Figure 1 This diagram illustrates the conductor arrangement of the compact transmission line de-icing skip phase flashover location prediction method and system of the present invention.

[0054] Figure 2 This diagram shows the installation of phase-to-phase spacer bars in the transmission line before the modification of the compact transmission line de-icing jump phase-to-phase flashover location prediction method and system of the present invention.

[0055] Figure 3 This diagram shows the configuration of phase-to-phase spacer bars in the modified transmission line according to the present invention's compact method and system for predicting the location of phase-to-phase flashover during de-icing.

[0056] Figure 4 This invention provides a diagram showing the phase gap between any two phase conductors in the compact transmission line de-icing jump phase-to-phase flashover location prediction method and system.

[0057] Figure 5 This is a probability diagram of the compact transmission line de-icing skip phase flashover location prediction method and system of the present invention. Detailed Implementation

[0058] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0059] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0060] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0061] Secondly, the present invention is described in detail with reference to the schematic diagrams. When describing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, in actual manufacturing, the three-dimensional spatial dimensions of length, width, and depth should be included. Microgrid switching power adaptive control method and system based on multi-agent technology.

[0062] Example 1

[0063] As one embodiment of the present invention, a method for predicting the location of phase-to-phase flashover during de-icing in compact transmission lines is provided, comprising:

[0064] S1: Based on the design data of compact transmission lines, a numerical simulation model was established and simulation analysis was performed to obtain the displacement of each phase conductor during the de-icing jump process. It should be noted that:

[0065] The design data for compact transmission lines is as follows:

[0066] The length of the tension section of the line and the span of each span.

[0067] The interphase distance l between conductors under gravity load only AB l AC and l BC and the included angle θ A θ B and θ C .

[0068] The location of the phase spacers installed on the conductor, as well as the length, cross-sectional area, and elastic modulus of the phase spacers.

[0069] The steps for establishing a numerical simulation model and performing simulation analysis are as follows:

[0070] The conductor is simulated using a LINK10 rod element that is only under tension and not compression.

[0071] Perform iterative shape finding for the conductor. After the shape finding is completed, check whether the sag of the model is consistent with the sag of the actual conductor to confirm whether the iterative shape finding of the conductor is correct.

[0072] After confirming that the iterative shape finding of the conductor is correct, model the insulator and the phase spacer.

[0073] The insulators are simulated using rigid rod MPC184 constraint elements, while the phase spacers are simulated using COMBBIN39 spring elements and MASS21 mass elements. The parameters of the COMBBIN39 spring elements are also set to consider the nonlinear characteristics of the phase spacers.

[0074] According to the column stability theory, the critical load for the interphase spacer under compression is p. cr p cr It can be represented as:

[0075]

[0076] Where π is the mathematical constant Pi, and E s I is the elastic modulus of the interphase spacer. s Let l be the moment of inertia of the cross section of the interphase spacer. s This represents the length of the interphase spacer.

[0077] According to Hooke's theorem, the tension or compression of the spacer bar between phases is less than the critical load p of the spacer bar. cr At that time, the supporting force F of the interphase spacer is:

[0078]

[0079] Among them, A s Let be the cross-sectional area of ​​the interphase spacer, and Δx be the end displacement of the interphase spacer.

[0080] The spacer bar is subjected to compression greater than or equal to the critical load p of the spacer bar. cr At that time, the buckling state of the interphase spacer was stable, and the pressure-end displacement (p-Δx) relationship was derived using the large deflection theory as follows:

[0081]

[0082] Where p is the pressure on the interphase spacer bar, K is the first complete elliptic integral, F is the second complete elliptic integral, and θ is the angle between the deformations of the tangents at the ends of the interphase spacer bars.

[0083] S2: Calculate the phase gaps between each phase during the de-icing jump process, obtaining the minimum phase gap and its position between any two phase conductors at each time step after de-icing occurs. It should be noted that:

[0084] The compact transmission line is designed with an inverted triangle configuration, with the upper conductors being phases A and C, and the lower conductor being phase B.

[0085] Icing, load, and damping simulations were performed, considering the horizontal wind load on the numerical simulation model during the simulation process. The phase gap between any two phase conductors at each corresponding node at each time point after de-icing was calculated as follows:

[0086]

[0087]

[0088]

[0089] d min (t,x)=min[d AB (t), d BC (t), d AC (t)]

[0090] Where t is time, x is position, and d is the horizontal distance from the left end of the span along the track direction. AB (t,x),d BC (t,x) and d AC (t,x) represents the AB phase gap, BC phase gap, and AC phase gap at position x at time t, and d min (t,x) represents the minimum value of the AB phase gap, BC phase gap, and AC phase gap at time t, and its location. A (t,x) and y A (t,x) represents the horizontal and vertical displacements of position A at time t, where x is the position. B (t,x) and y B (t,x) represents the horizontal and vertical displacements of position B at time t, where x is the position. C (t,x) and y C (t,x) represents the horizontal and vertical displacements of position C at time t.

[0091] Statistically determine the minimum gap and position of the entire span of the conductor within each jump time step.

[0092] S3: Calculate the probability of the location where the minimum phase gap occurs, and determine the location where phase-to-phase flashover is most likely to occur after de-icing. It should be noted that:

[0093] Count the number of times the minimum interphase gap less than the safety interphase distance occurs at position x. Define the probability P(x) of the minimum interphase gap occurring as follows:

[0094]

[0095] Where ∑n(x) is based on d min(t,x) represents the total number of times the minimum phase gap, which is less than the safe phase distance, occurs at position x. Δt is the simulation calculation time step, and T is the total simulation calculation time for conductor de-icing and jumping.

[0096] The larger the P(x) value, the higher the probability of an ice break jump flashover occurring at that location.

[0097] This embodiment also provides a compact transmission line de-icing skip phase-to-phase flashover location prediction system, including:

[0098] The simulation analysis module establishes a numerical simulation model based on the design data of compact transmission lines and performs simulation analysis to obtain the displacement of each phase conductor during the ice-free jumping process.

[0099] The calculation module calculates the phase gap between each phase during the ice-breaking jump, and obtains the minimum phase gap and position of any two phase conductors at each time step after the ice-breaking occurs.

[0100] The judgment module calculates the probability of the location where the minimum phase gap occurs and determines the location where phase flashover is most likely to occur after de-icing.

[0101] This embodiment also provides a computing device applicable to the method for predicting the location of phase-to-phase flashover during de-icing in compact transmission lines, including:

[0102] The system includes a memory and a processor. The memory stores computer-executable instructions, and the processor executes these instructions to implement the compact transmission line de-icing skip phase flashover location prediction method proposed in the above embodiments.

[0103] The computer device can be a terminal, comprising a processor, memory, communication interface, display screen, and input devices connected via a system bus. The processor provides computing and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs stored in the non-volatile storage media. The communication interface is used for wired or wireless communication with external terminals; wireless communication can be achieved through Wi-Fi, carrier networks, NFC (Near Field Communication), or other technologies. The display screen can be an LCD screen or an e-ink screen. The input devices can be a touch layer covering the display screen, buttons, a trackball, or a touchpad on the computer device's casing, or an external keyboard, touchpad, or mouse.

[0104] This embodiment also provides a storage medium storing a computer program that, when executed by a processor, implements the method for predicting the location of phase-to-phase flashover during de-icing of compact transmission lines as proposed in the above embodiments.

[0105] The storage medium proposed in this embodiment and the data storage method proposed in the above embodiments belong to the same inventive concept. Technical details not described in detail in this embodiment can be found in the above embodiments, and this embodiment has the same beneficial effects as the above embodiments.

[0106] Example 2

[0107] Reference Figures 1-5 This is another embodiment of the present invention, providing a verification test of a method and system for predicting the location of phase-to-phase flashover during de-icing of transmission lines, and verifying and explaining the technical effects adopted in this method.

[0108] In this embodiment, the section of the line is a compact line with a designed icing thickness of 15mm. The conductor type is 6×JL / G1A-300 / 40 steel-cored aluminum stranded wire, arranged in an equilateral inverted triangle configuration with a phase-to-phase distance of 8.2m. The insulators are V-strings. The conductor parameters are shown in Table 1, and the conductor and insulator arrangement is as follows. Figure 1 As shown.

[0109] Table 1: Relevant parameters of the conductor.

[0110]

[0111] The details of the tower usage are shown in Table 2. Among them, N011 and N012 are located at the mountain pass. Tower N011 is located at the foot of the mountain at an altitude of 2563.8 meters, and tower N012 is located at the top of the mountain at an altitude of 2664.9 meters. The span between N011 and N012 is 689 meters.

[0112] Table 2: Pole and Tower Usage Details.

[0113]

[0114] According to the original design data, no phase spacers were installed for spans L < 600m; for spans 600m ≤ L < 850m, one set of phase spacers was installed alternately for the upper left and lower phases, and the upper right and lower phases, at a distance of 1 / 3L from each end of the span, for a total of two sets of phase spacers. After line modification, one set of phase spacers was added to the upper left and upper right phase conductors in the first span of span N011-N012. Figures 2-3 As shown, the spacer bar has an elastic modulus of 4 GPa, a diameter of 30 mm, and a density of 1900 kg / m³. 3 .

[0115] A finite element model of the icing conductor-insulator-phase spacer system was established based on the ANSYS finite element software platform. The insulator was simulated using rigid rod MPC184 constraint elements; the phase spacer was simulated using COMBBIN39 spring elements and MASS21 mass elements; and the conductor was simulated using LINK10 rod elements, which are only subjected to tension and not compression.

[0116] Icing, load, and damping simulations were performed, considering the horizontal wind load on the model during the simulation. The phase gap between any two phase conductors at each corresponding node at each time point after de-icing was calculated, such as... Figure 4 As shown.

[0117] Let x be the number of times the minimum phase gap, which is less than the safe phase distance, occurs at a given position. Calculate the probability of this occurrence. Figure 5 As shown.

[0118] It should be noted that the above 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 preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A method for predicting the location of phase-to-phase flashover during de-icing in compact transmission lines, characterized in that, include: Based on the design data of compact transmission lines, a numerical simulation model was established and simulation analysis was conducted to obtain the displacement of each phase conductor during the ice-free jumping process. Calculate the phase gap between each phase during the ice-breaking jump process, and obtain the minimum phase gap and its position between any two phase conductors at each time step after the ice-breaking occurs. Calculate the probability of the location where the minimum phase gap occurs, and determine the location where phase flashover is most likely to occur after de-icing; The compact transmission line design data includes, The length of the tension section of the line and the span of each span; Phase distance between conductors under gravity load only , and and included angle , and ; The location of the phase spacers installed on the conductor, as well as the length, cross-sectional area, and elastic modulus of the phase spacers; Establishing a numerical simulation model and conducting simulation analysis includes, The conductor is simulated using a LINK10 rod element that is only under tension and not compression. Perform iterative shape finding of the conductor. After the shape finding is completed, check whether the sag of the model is consistent with the sag of the actual conductor to confirm whether the iterative shape finding of the conductor is correct. After confirming that the iterative shape finding of the conductor is correct, model the insulator and the phase spacer. The insulator is simulated using rigid rod MPC184 constraint elements, and the phase spacer is simulated using COMBBIN39 spring elements and MASS21 mass elements. The nonlinear characteristics of the phase spacer are also considered when setting the parameters of the COMBBIN39 spring elements. Calculating the probability of the location where the minimum phase gap occurs includes, statistics x The probability of a location having a minimum phase gap, defined as the number of times such a gap occurs that is less than the safe phase-to-phase distance, is given. for: in, According to Statistics show that x ∆ represents the total number of times the minimum phase gap occurs at a position less than the safe phase distance. t To simulate the time step, T The total time for the conductor to detach from ice and jump is calculated using simulation.

2. The method for predicting the location of phase-to-phase flashover during de-icing in compact transmission lines as described in claim 1, characterized in that: The nonlinear characteristics of the interphase spacer bars include, According to the column stability theory, the critical load for the interphase spacer under compression is: , It can be represented as: Where π is the value of a circle. The elastic modulus of the interphase spacer bar. The moment of inertia of the cross section of the interphase spacer bar is... The length of the interphase spacer bar; According to Hooke's theorem, the tension or compression load on the spacer bar between phases is less than the critical load of the spacer bar. At that time, the supporting force F of the interphase spacer is: in, The cross-sectional area of ​​the interphase spacer bar is... This represents the end displacement of the interphase spacer bars; The spacer bar is subjected to compression greater than or equal to the critical load of the spacer bar. At that time, the buckling state of the interphase spacer is stable. The pressure-end displacement (p-Δx) relationship is derived using the large deflection theory as follows: in, The pressure on the interphase spacer bars. This is a complete elliptic integral of the first kind. This is a complete elliptic integral of the second kind. It is the included angle between the deformations of the tangents at the ends of the spacers.

3. The method for predicting the location of phase-to-phase flashover during de-icing in compact transmission lines as described in claim 2, characterized in that: Calculate the phase gaps between each phase during the de-icing jump process, and obtain the minimum phase gap and its position for any two phase conductors at each time step after de-icing occurs. The compact transmission line is designed with an inverted triangle configuration, with the upper conductors being phases A and C, and the lower conductor being phase B. Icing, load, and damping simulations were performed, considering the horizontal wind load borne by the numerical simulation model during the simulation process. The phase gap between any two phase conductors at each corresponding node at each time point after de-icing was calculated as follows: Where t is time, x The position is obtained by calculating the horizontal distance from the left end of the span along the track direction. , and Let AB phase gap, BC phase gap, and AC phase gap be the values ​​at position x at time t. Let be the minimum value of the AB phase gap, BC phase gap, and AC phase gap at time t, and its location. Let A be the horizontal and vertical displacements of position x at time t. Let x be the horizontal and vertical displacements of position B at time t. Let C be the horizontal and vertical displacements of position x at time t. Statistically determine the minimum gap and position of the entire span of the conductor within each jump time step.

4. The method for predicting the location of phase-to-phase flashover during de-icing in compact transmission lines as described in claim 3, characterized in that: The The higher the value, the greater the likelihood of an ice break jump flashover occurring at that location.

5. A compact transmission line de-icing skip phase-to-phase flashover location prediction system, using the method described in any one of claims 1-4, characterized in that, include: The simulation analysis module establishes a numerical simulation model and performs simulation analysis based on the design data of compact transmission lines to obtain the displacement of each phase conductor during the ice-free jumping process. The calculation module calculates the phase gap between each phase during the ice-breaking jump, and obtains the minimum phase gap and position of any two phase conductors at each time step after the ice-breaking occurs. The judgment module calculates the probability of the location where the minimum phase gap occurs and determines the location where phase flashover is most likely to occur after de-icing.

6. A computing device, comprising: Memory and processor; The memory is used to store computer-executable instructions, and the processor is used to execute the computer-executable instructions. When the computer-executable instructions are executed by the processor, they implement the steps of the compact transmission line de-icing skip phase-to-phase flashover location prediction method according to any one of claims 1 to 4.

7. A computer-readable storage medium storing computer-executable instructions that, when executed by a processor, implement the steps of the compact transmission line de-icing skip phase-to-phase flashover location prediction method according to any one of claims 1 to 4.

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