A flashover point positioning method, device, equipment and storage medium

Abstract

The present application relates to the technical field of flashover positioning, and particularly relates to a flashover point positioning method, device, equipment and storage medium, the method comprising: establishing a lightning flashover model of a power transmission line; applying a standard lightning current at a tower to form a simulated lightning wave waveform; obtaining a simulated decay waveform from a first substation and a second substation; calculating a simulated wave peak ratio to obtain a corresponding relationship between all towers and the simulated wave peak ratio; when flashover occurs in an actual power transmission line, obtaining a decay waveform of a lightning wave waveform from an actual first substation and an actual second substation, and calculating a wave peak ratio; according to the wave peak ratio and the corresponding relationship between all towers and the simulated wave peak ratio, obtaining position information of the flashover point. It can be understood that the present application can position by measuring the peak value ratio of the wave peak of the lightning wave waveform, does not need to increase an additional device, and can reduce the requirement of time synchronization of the substation, and improve the measurement accuracy.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of flashover positioning, in particular to a flashover point positioning method, device, equipment and storage medium. BACKGROUND

[0002] The problems caused by lightning strike on the power transmission line seriously threaten the safe and stable operation of the power system. The arc flash caused by lightning strike can damage the insulator and reduce its insulation level. After the flash, it is necessary to evaluate whether it needs to be replaced. The premise of the above work is to first determine the position of the flashover point. The length of the power transmission line is at least tens of kilometers, or even thousands of kilometers, and the terrain along the line is often complex. If the flashover point is positioned by manual line patrol, the workload is extremely large, the efficiency is low, and the life safety of the operation and maintenance personnel may be threatened.

[0003] In order to solve the above problems, there are currently two methods for positioning the flashover point of the insulator. One is to install multiple traveling wave measurement devices on the conductor to measure the lightning wave in a distributed manner. The device that first senses the lightning wave can preliminarily know the lightning strike point section, and then the lightning wave propagation time is used for positioning. The second method is to measure the lightning wave through the voltage divider in the transformer substation, analyze the time difference of the lightning wave transmitted to the two transformer substations, obtain the distance difference between the flashover point and the two transformer substations, and obtain the position of the flashover point. The first method needs to install additional hardware devices, which is high in cost and has a large maintenance workload, but is high in precision. The second method does not need to increase additional hardware devices, which is low in cost and does not need to increase the maintenance workload, but because the propagation speed of the lightning wave is close to the speed of light, the time synchronization of the two transformer substations is extremely high, and because the lightning wave is extremely irregular, it is difficult to determine the time when the lightning wave reaches the transformer substation, so the precision is limited.

[0004] Therefore, the existing flashover point positioning method needs to install additional hardware devices, which has a large maintenance workload, and the time synchronization of the two transformer substations is extremely high, so the measurement precision is low. SUMMARY

[0005] Therefore, the present application aims to provide a flashover point positioning method, device, equipment and storage medium to solve the problems of large maintenance workload and low measurement precision in the prior art.

[0006] According to a first aspect of an embodiment of the present application, a flashover point positioning method is provided, comprising:

[0007] Step S11, a lightning flashover model of a power transmission line is established, the lightning flashover model comprising a first transformer substation and a second transformer substation located at two ends of the power transmission line, and a preset number of towers;

[0008] Step S12, a standard lightning current is applied at the tower to form a simulated lightning wave waveform;

[0009] obtaining an analog attenuation waveform of the analog lightning wave from the first substation and the second substation;

[0010] calculating an analog peak ratio of the analog attenuation waveform, and obtaining a corresponding relationship between the tower and the analog peak ratio;

[0011] obtaining the corresponding relationship between all towers and the analog peak ratio according to steps S12-S14;

[0012] obtaining an attenuation waveform of a lightning wave from the actual first substation and the actual second substation when flashover occurs in the actual power transmission line, and calculating a peak ratio;

[0013] obtaining position information of the flashover point according to the peak ratio and the corresponding relationship between all towers and the analog peak ratio.

[0014] Preferably, the method for establishing a lightning flashover model of the power transmission line comprises:

[0015] obtaining actual line data of the power transmission line, and establishing a lightning flashover model according to the actual line data; the actual line data at least includes the number of towers and distances between the towers and between the towers and the substations.

[0016] Preferably, the method for obtaining an analog attenuation waveform of the analog lightning wave from the first substation and the second substation comprises:

[0017] obtaining a first analog attenuation waveform of the analog lightning wave from the first substation;

[0018] obtaining a second analog attenuation waveform of the analog lightning wave from the second substation.

[0019] Preferably, the method for calculating an analog peak ratio of the analog attenuation waveform comprises:

[0020] obtaining a peak value of a first peak of the first analog attenuation waveform as a first peak value;

[0021] obtaining a peak value of a first peak of the second analog attenuation waveform as a second peak value;

[0022] calculating a ratio of the first peak value and the second peak value as the analog peak ratio of the analog attenuation waveform.

[0023] Preferably, after the corresponding relationship between all towers and the analog peak ratio is obtained, the method further comprises:

[0024] According to the correspondence between all the towers and the simulation peak ratios, a peak ratio-tower number correspondence curve is generated.

[0025] Preferably, the position information of the flashover point is obtained according to the peak ratio and the correspondence between all the towers and the simulation peak ratios, and includes:

[0026] The peak ratio is input into the peak ratio-tower number correspondence curve to obtain the tower number corresponding to the peak ratio.

[0027] The position information of the flashover point is obtained according to the tower number.

[0028] According to a second aspect of the embodiment of the present application, a flashover point positioning device is provided, comprising:

[0029] A model establishing module is configured to establish a lightning flashover model of a power transmission line, the lightning flashover model including a first substation and a second substation at two ends of the power transmission line and a preset number of towers;

[0030] A model running module is configured to apply a standard lightning current at each tower to form a simulation lightning wave waveform, obtain a simulation attenuation waveform of each simulation lightning wave waveform from the first substation and the second substation, and calculate a simulation peak ratio of each simulation attenuation waveform according to the simulation attenuation waveform.

[0031] A data obtaining module is configured to obtain an attenuation waveform of a lightning wave from actual first and second substations when a flashover occurs in an actual power transmission line, and calculate a peak ratio.

[0032] A flashover point positioning module is configured to compare the peak ratio with the simulation peak ratio to obtain position information of the flashover point.

[0033] Preferably, the device further comprises:

[0034] An image generating module is configured to generate a peak ratio-tower number correspondence curve according to the correspondence between all the towers and the simulation peak ratios.

[0035] According to a third aspect of the embodiment of the present application, a flashover point positioning device is provided, comprising:

[0036] A main controller and a memory connected to the main controller;

[0037] The memory, in which program instructions are stored;

[0038] The main controller is configured to execute the program instructions stored in the memory to execute any of the above methods.

[0039] According to a fourth aspect of the embodiments of the present application, a computer readable storage medium is provided, which stores a computer program, wherein the computer program, when executed by a processor, implements the method according to any one of the preceding aspects.

[0040] The technical solutions provided by the embodiments of the present application can have the following beneficial effects.

[0041] It can be understood that the technical solutions provided by the present application can establish a lightning flashover model of a power transmission line, the lightning flashover model comprising a first substation and a second substation located at two ends of the power transmission line, and a preset number of towers; a standard lightning current is applied at the towers to form a simulated lightning wave waveform; a simulated attenuation waveform of the simulated lightning wave waveform is obtained from the first substation and the second substation; a simulated peak ratio of the simulated attenuation waveform is calculated, and a corresponding relationship between the towers and the simulated peak ratio is obtained; the corresponding relationship between all the towers and the simulated peak ratio is obtained according to the above steps; when flashover occurs in an actual power transmission line, an attenuation waveform of a lightning wave waveform is obtained from an actual first substation and an actual second substation, and a peak ratio is calculated; according to the peak ratio and the corresponding relationship between all the towers and the simulated peak ratio, position information of a flashover point is obtained. It can be understood that the technical solutions provided by the present application can locate the flashover point by measuring the peak value ratio of the peak of the lightning wave waveform, without the need to increase additional devices, so that the maintenance workload is greatly reduced, and the requirement for time synchronization of the substations is reduced, and the measurement accuracy is improved.

[0042] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0043] The accompanying drawings, which are incorporated into and form part of the specification, illustrate an embodiment consistent with the present application and, together with the specification, serve to explain the principles of the present application.

[0044] Figure 1 is a step schematic diagram of a flashover point positioning method according to an exemplary embodiment;

[0045] Figure 2 is a lightning flashover model schematic diagram according to an exemplary embodiment;

[0046] Figure 3 is a peak ratio-tower number corresponding relationship curve diagram according to an exemplary embodiment;

[0047] Figure 4 is a schematic block diagram of a flashover point positioning device according to an exemplary embodiment. DETAILED DESCRIPTION

[0048] The exemplary embodiments will be described in detail below with reference to the drawings. In the following description, unless otherwise indicated, like numbers in the different drawings represent similar or analogous elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present disclosure. Instead, they are merely examples of apparatuses and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0049] Embodiment One

[0050] Figure 1 is a schematic diagram of steps of a lightning flash point positioning method according to an exemplary embodiment, see Figure 1 A lightning flash point positioning method is provided, comprising:

[0051] Step S11, establishing a lightning flash model of a power transmission line, the lightning flash model comprising a first substation and a second substation at two ends of the power transmission line, and a preset number of towers;

[0052] Step S12, applying a standard lightning current at the towers to form a simulated lightning wave waveform;

[0053] Step S13, obtaining a simulated decay waveform of the simulated lightning wave waveform from the first substation and the second substation;

[0054] Step S14, calculating a simulated peak ratio of the simulated decay waveform, and obtaining a correspondence between the towers and the simulated peak ratio;

[0055] Step S15, obtaining the correspondence between all the towers and the simulated peak ratio according to steps S12-S14;

[0056] Step S16, when a flashover occurs in an actual power transmission line, obtaining a decay waveform of a lightning wave waveform from an actual first substation and an actual second substation, and calculating a peak ratio;

[0057] Step S17, obtaining location information of a flashover point according to the peak ratio and the correspondence between all the towers and the simulated peak ratio.

[0058] In specific practice, first, a lightning flash model of a power transmission line is established, which is a simulated power transmission line and can be established in ATP-EMTP or PSACD. After the model is established, in a simulated environment, a standard lightning current is applied to a tower in the model, which forms a simulated lightning wave waveform. The simulated lightning wave waveform will spread along the power transmission line to both sides with the lightning stroke as the center. The propagation of the lightning wave on the power transmission line is described in detail in Figure 2The amplitude of the lightning wave shape is continuously attenuated with the increase of the transmission distance when the lightning wave shape propagates along the power transmission line, therefore, the attenuation wave shape of the lightning wave shape transmitted at the substation at both ends of the power transmission line is collected, the peak amplitude of the attenuation wave shape is measured, the peak ratio is calculated, the corresponding relationship between the peak ratio and the tower is recorded, and the corresponding relationship between all towers and the peak ratio is obtained according to the above steps. Furthermore, when the lightning flashover occurs in the actual scenario, the generated lightning wave shape is transmitted along the actual power transmission line, the attenuation wave shape is received by the voltage divider at the substation at both sides of the power transmission line, and the peak ratio is obtained according to the peak value, and the tower corresponding to the peak ratio is found from the corresponding relationship between all towers and the simulated peak ratio, so that the position information of the flashover point can be obtained.

[0059] It can be understood that the technical scheme provided by the present application establishes a lightning flashover model of the power transmission line, applies a standard lightning current to each tower to form a simulated lightning wave shape, obtains a simulated attenuation wave shape of each simulated lightning wave shape, calculates a simulated peak ratio of each simulated attenuation wave shape according to the simulated attenuation wave shape, obtains an attenuation wave shape of the lightning wave shape from the actual first substation and the actual second substation when the actual power transmission line flashes, and calculates a peak ratio. The position information of the flashover point is obtained by comparing the peak ratio with the simulated peak ratio. It can be understood that the technical scheme provided by the present application can locate the flashover point by measuring the peak ratio of the peak of the lightning wave shape, without increasing additional devices, so that the maintenance workload is greatly reduced, and the time synchronization requirement of the substation is reduced, and the measurement accuracy is improved.

[0060] It should be noted that the lightning flashover model of the power transmission line comprises:

[0061] The actual line data of the power transmission line is obtained, and the lightning flashover model is established according to the actual line data; the actual line data at least includes the number of towers, and the distance between each tower and the distance between the tower and the substation.

[0062] In specific practice, Figure 2 is a lightning flashover model diagram according to an example embodiment, referring to Figure 2 , Figure 2The tower 1, the insulator 2, the insulator flashover arc 3, the transmission line 4, the first substation voltage divider 5, the second substation voltage divider 6, the ground 7, the lightning wave 8 formed when the insulator flashes over, the attenuation waveform 9 of the lightning wave transmitted to the first substation, and the attenuation waveform 10 of the lightning wave transmitted to the second substation. At the tower 1, a standard lightning current is applied, so that the insulator 2 on the tower flashes over, forming the insulator flashover arc 3, and then forming the lightning wave 8. The lightning wave 8 is transmitted to both sides along the transmission line 4 and attenuates. When transmitted to the left side and reaching the first substation voltage divider 5, the attenuation waveform 9 can be obtained from the first substation voltage divider 5. When transmitted to the right side and reaching the second substation voltage divider 6, the attenuation waveform 10 can be obtained from the second substation voltage divider 6, and then the peak ratio can be calculated.

[0063] It should be noted that the analog attenuation waveform of the analog lightning wave waveform obtained from the first substation and the second substation comprises:

[0064] The first analog attenuation waveform of the analog lightning wave waveform obtained from the first substation;

[0065] The second analog attenuation waveform of the analog lightning wave waveform obtained from the second substation.

[0066] In specific practice, as shown in Figure 2 The lightning wave is centered on the flashover point and attenuates along the transmission line to both sides. The first analog attenuation waveform of the analog lightning wave waveform obtained from the first substation and the second analog attenuation waveform of the analog lightning wave waveform obtained from the second substation are required. Then, according to the peak values of the waveforms, the peak ratio is calculated.

[0067] It should be noted that the analog peak ratio of the analog attenuation waveform is calculated, comprising:

[0068] The peak value of the first peak of the first analog attenuation waveform is obtained as a first peak value;

[0069] The peak value of the first peak of the second analog attenuation waveform is obtained as a second peak value;

[0070] The ratio of the first peak value to the second peak value is calculated as the analog peak ratio of the analog attenuation waveform.

[0071] The first peak of the attenuation waveform is selected as the calculation data to calculate the peak ratio in this embodiment. The peak value of the first peak is usually the most accurate and easy to measure, which is beneficial to improve the accuracy of the final result.

[0072] It should be noted that after the correspondence between all towers and analog peak ratios is obtained, the method further comprises:

[0073] According to the correspondence between all towers and the simulated wave crest ratio, a wave crest ratio-tower number correspondence curve is generated.

[0074] Referring to Figure 3 , Figure 3 is a wave crest ratio-tower number correspondence curve according to an exemplary embodiment. In specific practice, a wave crest ratio-tower number correspondence curve can be generated according to the correspondence between all towers and the simulated wave crest ratio, so that the maintenance personnel can intuitively determine the specific location of the flashover point according to the actual wave crest ratio.

[0075] It should be noted that the location information of the flashover point is obtained according to the wave crest ratio and the correspondence between all towers and the simulated wave crest ratio, including:

[0076] The wave crest ratio is input into the wave crest ratio-tower number correspondence curve to obtain the tower number corresponding to the wave crest ratio;

[0077] According to the tower number, the location information of the flashover point is obtained.

[0078] In specific practice, each tower has its corresponding number, and the tower number can be obtained according to the correspondence curve and the actually measured wave crest ratio, and thus the location of the flashover point can be known.

[0079] Embodiment Two

[0080] Figure 4 is a schematic block diagram of a flashover point positioning device according to an exemplary embodiment. Referring to Figure 4 , a flashover point positioning device is provided, including:

[0081] The model establishing module 101 is configured to establish a lightning flashover model of the power transmission line, the lightning flashover model including a first substation and a second substation located at two ends of the power transmission line, and a preset number of towers;

[0082] The model running module 102 is configured to respectively apply a standard lightning current at each tower to form a simulated lightning wave waveform; obtain a simulated attenuation waveform of each simulated lightning wave waveform from the first substation and the second substation; and calculate a simulated wave crest ratio of each simulated attenuation waveform according to the simulated attenuation waveform;

[0083] The data acquisition module 103 is configured to obtain an attenuation waveform of a lightning wave from the actual first substation and the actual second substation when a flashover occurs in the actual power transmission line, and calculate a wave crest ratio;

[0084] The flashover point positioning module 104 is configured to compare the wave peak ratio with the simulated wave peak ratio to obtain the location information of the flashover point.

[0085] It can be understood that the technical scheme provided by the present application establishes a lightning stroke flashover model of a power transmission line, the lightning stroke flashover model includes a first transformer substation and a second transformer substation located at two ends of the power transmission line, and a preset number of towers; a standard lightning current is applied at the towers to form a simulated lightning wave waveform; a simulated attenuation waveform of the simulated lightning wave waveform is obtained from the first transformer substation and the second transformer substation; a simulated wave peak ratio of the simulated attenuation waveform is calculated, and a corresponding relationship between the towers and the simulated wave peak ratio is obtained; the corresponding relationship between all the towers and the simulated wave peak ratio is obtained according to the above steps; when a flashover occurs in an actual power transmission line, an attenuation waveform of a lightning wave waveform is obtained from an actual first transformer substation and an actual second transformer substation, and a wave peak ratio is calculated; according to the wave peak ratio and the corresponding relationship between all the towers and the simulated wave peak ratio, the location information of the flashover point is obtained. It can be understood that the technical scheme provided by the present application can be positioned by measuring the peak value ratio of the wave peak of the lightning wave waveform, without the need to increase additional devices, so that the maintenance workload is greatly reduced, and the requirement for time synchronization of the transformer substation is reduced, and the measurement accuracy is improved.

[0086] It should be noted that the device further comprises:

[0087] An image generation module is configured to generate a wave peak ratio-tower number corresponding relationship graph according to the corresponding relationship between all the towers and the simulated wave peak ratio.

[0088] Embodiment three

[0089] A flashover point positioning device is provided, comprising:

[0090] A master controller and a memory connected to the master controller;

[0091] The memory, wherein the memory stores program instructions;

[0092] The master controller is configured to execute the program instructions stored in the memory to execute the method of any one of the above embodiments.

[0093] Embodiment four

[0094] A computer readable storage medium is provided, and the computer readable storage medium stores a computer program, wherein the computer program is executed by a processor to implement the method of any one of the above embodiments.

[0095] It can be understood that the same or similar parts in the above embodiments can be mutually referenced, and the contents not described in detail in some embodiments can be referred to the same or similar contents in other embodiments.

[0096] It should be noted that in the description of this invention, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this invention, unless otherwise stated, "a plurality of" means at least two.

[0097] Any process or method description in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing a particular logical function or process, and the scope of the preferred embodiments of the invention includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the functions involved, as will be understood by those skilled in the art to which embodiments of the invention pertain.

[0098] It should be understood that various parts of the present invention can be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0099] Those skilled in the art will understand that all or part of the steps of the methods in the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, the program includes one or a combination of the steps of the method embodiments.

[0100] Furthermore, the functional units in the various embodiments of the present invention can be integrated into a processing module, or each unit can exist physically separately, or two or more units can be integrated into a module. The integrated module can be implemented in hardware or as a software functional module. If the integrated module is implemented as a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.

[0101] The storage media mentioned above can be read-only memory, disk, or optical disk, etc.

[0102] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the specification, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0103] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary, and cannot be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above-described embodiments within the scope of the present application.

Claims

1. A method for locating flashover points, characterized in that, include: Step S11: Establish a lightning flashover model of the transmission line. The lightning flashover model includes a first substation and a second substation located at both ends of the transmission line, as well as a preset number of towers. Step S12: Apply a standard lightning current to the tower to form a simulated lightning wave waveform; Step S13: Obtain the simulated attenuation waveform of the simulated lightning wave from the first substation and the second substation; Step S14: Calculate the simulated peak ratio of the simulated attenuation waveform and obtain the correspondence between the tower and the simulated peak ratio; Step S15: Following steps S12 to S14, obtain the correspondence between all towers and the simulated wave crest ratio; Step S16: When a flashover occurs on the actual transmission line, obtain the attenuated waveforms of the lightning wave from the actual first substation and the actual second substation, and calculate the peak ratio. Step S17: Based on the crest ratio and the correspondence between all towers and the simulated crest ratio, the location information of the flashover point is obtained.

2. The method according to claim 1, characterized in that, The establishment of the lightning flashover model for the transmission line includes: Obtain actual line data of the transmission line and establish a lightning flashover model based on the actual line data; the actual line data includes at least the number of towers, and the distances between each tower and between the towers and the substation.

3. The method according to claim 1, characterized in that, The process of obtaining the simulated attenuated waveform of the simulated lightning wave from the first substation and the second substation includes: The first simulated attenuated waveform of the simulated lightning wave is obtained from the first substation; The second simulated attenuation waveform of the simulated lightning wave is obtained from the second substation.

4. The method according to claim 3, characterized in that, The calculation of the simulated peak ratio of the simulated attenuation waveform includes: Obtain the peak value of the first peak of the first simulated attenuation waveform, and use it as the first peak value; Obtain the peak value of the first peak of the second simulated attenuation waveform, and use it as the second peak value; The ratio of the first peak value to the second peak value is calculated as the simulated peak ratio of the simulated attenuation waveform.

5. The method according to claim 4, characterized in that, After obtaining the correspondence between all towers and the simulated crest ratio, the following is also included: Based on the correspondence between all towers and the simulated crest ratio, a crest ratio-to-tower number correspondence curve is generated.

6. The method according to claim 5, characterized in that, The step of deriving the flashover point location information based on the crest ratio and the correspondence between all towers and the simulated crest ratio includes: Input the crest ratio into the crest ratio-tower number correspondence curve to obtain the tower number corresponding to the crest ratio. Based on the tower number, the location information of the flashover point is obtained.

7. A flashover point positioning device, characterized in that, include: The model building module is used to build a lightning flashover model of a transmission line. The lightning flashover model includes a first substation and a second substation located at both ends of the transmission line, as well as a preset number of towers. The model running module is used to apply standard lightning current at each tower to form a simulated lightning wave waveform; Simulated attenuation waveforms of each simulated lightning wave are obtained from the first substation and the second substation; Based on the simulated attenuation waveforms, the simulated peak ratio of each simulated attenuation waveform is calculated. The data acquisition module is used to acquire the attenuated waveform of the lightning wave from the actual first substation and the actual second substation after a flashover occurs on the actual transmission line, and to calculate the peak ratio. The flashover point location module is used to compare the peak ratio with the simulated peak ratio to obtain the location information of the flashover point.

8. The apparatus according to claim 7, characterized in that, Also includes: The image generation module is used to generate a curve showing the correspondence between the crest ratio and the tower number, based on the correspondence between all towers and the simulated crest ratio.

9. A flashover point positioning device, characterized in that, include: The main controller and the memory connected to the main controller; The memory stores program instructions; The main controller is used to execute program instructions stored in the memory and to perform the method as described in any one of claims 1 to 6.

10. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by a processor, it implements the method as described in any one of claims 1 to 6.

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