Transmission tower lightning resistance level analysis method and device, electronic equipment and storage medium

Abstract

The invention relates to the technical field of power systems, and provides a power transmission tower lightning resistance level analysis method and device, electronic equipment and a storage medium, and the method comprises the steps: calling a lightning stroke simulation model corresponding to a tower type from a pre-constructed model library according to the tower type of a to-be-analyzed tower; wherein the model library comprises a plurality of lightning stroke simulation models pre-constructed based on different tower types; inputting tower line parameters of a to-be-analyzed tower into the lightning stroke simulation model to complete configuration of the lightning stroke simulation model; the amplitude of the lightning current is adjusted, when insulator critical flashover occurs in the lightning stroke simulation model, the current value corresponding to the peak value of the current lightning current waveform serves as the lightning resistance level output of the to-be-analyzed tower to pre-construct the lightning stroke simulation model corresponding to each tower type, and the corresponding model is directly called according to the tower type of the to-be-analyzed tower during actual analysis. According to the method, the lightning resistance level analysis efficiency is remarkably improved, and the method is suitable for a scene in which batch lightning resistance level checking needs to be carried out on a plurality of towers.

Description

Technical Field

[0001] The present invention relates to the technical field of power systems, and particularly to a method, device, electronic device and storage medium for analyzing the lightning withstand level of transmission towers. Background Art

[0002] Lightning strike is one of the most important factors leading to the tripping of transmission lines. To accurately evaluate and improve the lightning protection performance of transmission lines, it is necessary to accurately simulate and model the lines and analyze the transient overvoltage caused by lightning strikes. Such analysis can help power system designers and operation and maintenance personnel understand the electrical response of the lines under different conditions, so as to take effective protection measures. By analyzing the lightning transient overvoltage in detail, it is possible to identify which parts are most vulnerable to lightning strikes, providing a scientific basis for subsequent lightning protection design. In addition, the results of these analyses are also the basis for calculating the lightning withstand level of the towers. The lightning withstand level refers to the maximum current value that the tower can withstand under lightning strikes, which is a key indicator for evaluating the lightning protection performance of transmission lines.

[0003] Currently, the calculation of the lightning withstand level of transmission lines mainly relies on two methods: one is to use the formula method for calculation, but the accuracy of this method is relatively low; the other is to analyze through simulation modeling. Although simulation modeling can provide more accurate results, it requires a large amount of preliminary work, including cumbersome equivalent circuit mathematical calculations. When it is necessary to batch check the lightning withstand levels of multiple towers, the traditional simulation modeling method will result in a huge amount of computational work and very low efficiency.

[0004] Therefore, the existing analysis methods cannot batch analyze the lightning withstand levels of multiple towers, resulting in low efficiency. Summary of the Invention

[0005] In view of this, the embodiments of the present application provide a method, device, electronic device and storage medium for analyzing the lightning withstand level of transmission towers to solve the problem that the existing analysis methods cannot batch analyze the lightning withstand levels of multiple towers and have low efficiency.

[0006] The first aspect of the embodiments of the present application provides a method for analyzing the lightning withstand level of transmission towers, including:

[0007] According to the tower type of the tower to be analyzed, call the lightning strike simulation model corresponding to the tower type from the pre-constructed model library; wherein, the model library includes multiple lightning strike simulation models pre-constructed based on different tower types;

[0008] Input the tower line parameters of the tower to be analyzed into the lightning strike simulation model to complete the configuration of the lightning strike simulation model;

[0009] Adjust the amplitude of the lightning current. When the insulator critical flashover occurs in the lightning strike simulation model, use the current value corresponding to the peak of the current waveform of the current lightning strike as the lightning withstand level output of the tower to be analyzed.

[0010] In one embodiment, based on each tower type, construct a corresponding lightning strike simulation model respectively, including:

[0011] Import the lightning current module;

[0012] Based on different wave impedance segment modules, build the tower module of the specified tower type;

[0013] Import the insulator module;

[0014] Import overhead transmission line components and build the transmission line module;

[0015] Import the grounding resistance module;

[0016] Connect the lightning current module, tower module, insulator module, transmission line module and the grounding resistance module to form the lightning strike simulation model of the specified tower type.

[0017] The second aspect of the embodiments of the present application provides a device for analyzing the lightning withstand level of a transmission tower, including:

[0018] A model calling module, configured to call the lightning strike simulation model corresponding to the tower type from a pre-constructed model library according to the tower type of the tower to be analyzed; wherein, the model library includes a plurality of lightning strike simulation models pre-constructed based on different tower types;

[0019] An input module, configured to input the tower line parameters of the tower to be analyzed into the lightning strike simulation model;

[0020] An analysis module, configured to adjust the amplitude of the lightning current. When the insulator critical flashover occurs in the lightning strike simulation model, use the current value corresponding to the peak of the current lightning strike waveform as the lightning withstand level output of the tower to be analyzed.

[0021] The third aspect of the embodiments of the present application provides an electronic device, including a processor, a memory, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the electronic device realizes the method for analyzing the lightning withstand level of a transmission tower provided in the first aspect of the embodiments of the present application.

[0022] The fourth aspect of the embodiments of the present application provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, the method described in the first aspect of the embodiments of the present application is realized.

[0023] The lightning withstand level analysis method for transmission towers provided in the first aspect of the embodiments of the present application calls the lightning strike simulation model corresponding to the tower type from a pre-constructed model library according to the tower type of the tower to be analyzed; wherein, the model library includes a plurality of lightning strike simulation models pre-constructed based on different tower types; inputs the tower line parameters of the tower to be analyzed into the lightning strike simulation model to complete the configuration of the lightning strike simulation model; adjusts the amplitude of the lightning current, and when the insulator experiences critical flashover in the lightning strike simulation model, takes the current value corresponding to the peak value of the current waveform at this time as the lightning withstand level output of the tower to be analyzed. This method pre-constructs the lightning strike simulation model corresponding to each tower type and directly calls the corresponding model according to the tower type of the tower to be analyzed during actual analysis. This method significantly improves the efficiency of lightning withstand level analysis. The pre-constructed model library avoids the process of starting from scratch for modeling each time, greatly saving time and labor costs, and is applicable to scenarios where it is necessary to batch-check the lightning withstand levels of multiple towers.

[0024] It can be understood that the beneficial effects of the above second aspect to the fourth aspect can be referred to the relevant descriptions in the above first aspect, and will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0026] Figure 1 is a schematic flowchart of a lightning withstand level analysis method for transmission towers provided in an embodiment of the present application;

[0027] Figure 2 is a schematic structural diagram of a wine glass-shaped tower provided in an embodiment of the present application;

[0028] Figure 3 is a schematic structural diagram of a cat head-shaped tower provided in an embodiment of the present application;

[0029] Figure 4 is a schematic structural diagram of an AC single-circuit dry-type tower provided in an embodiment of the present application;

[0030] Figure 5 is a schematic structural diagram of an AC double-circuit horn-shaped tower provided in an embodiment of the present application;

[0031] Figure 6 is a schematic structural diagram of an umbrella-shaped tower provided in an embodiment of the present application;

[0032] Figure 7It is a schematic diagram of the structure of a drum-shaped tower provided by an embodiment of the present application;

[0033] Figure 8 It is a schematic diagram of the structure of an I-type string DC horn-shaped tower provided by an embodiment of the present application;

[0034] Figure 9 It is a schematic diagram of the structure of a V-type string DC horn-shaped tower provided by an embodiment of the present application;

[0035] Figure 10 It is a schematic diagram of the structure of an I-type string DC cross-shaped tower provided by an embodiment of the present application;

[0036] Figure 11 It is a schematic diagram of the structure of a V-type string DC cross-shaped tower provided by an embodiment of the present application;

[0037] Figure 12 It is a schematic flowchart of a method for analyzing the lightning withstand level of a transmission tower provided by another embodiment of the present application;

[0038] Figure 13 It is a schematic diagram of a lightning strike simulation model of an AC single-circuit cross-shaped type provided by an embodiment of the present application;

[0039] Figure 14 It is a schematic diagram of a lightning strike simulation model of an AC double-circuit horn-shaped type provided by an embodiment of the present application;

[0040] Figure 15 It is a schematic diagram of the structure of a device for analyzing the lightning withstand level of a transmission tower provided by an embodiment of the present application;

[0041] Figure 16 It is a schematic diagram of the structure of an electronic device provided by an embodiment of the present application. Detailed implementation manners

[0042] In the following description, for the purpose of illustration rather than limitation, specific details such as specific system structures and technologies are proposed to thoroughly understand the embodiments of the present application. However, those skilled in the art should clearly understand that the present application can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid unnecessary details from interfering with the description of the present application.

[0043] It should be understood that when used in the specification and appended claims of the present application, the term "comprising" indicates the presence of the described features, wholes, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or their combinations.

[0044] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that specific features, structures, or characteristics described in connection with that embodiment are included in one or more embodiments of this application. Thus, statements such as "in one embodiment", "in some embodiments", "in other some embodiments", "in still other embodiments", etc. that appear in different places in this specification do not necessarily all refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized. The terms "comprising", "including", "having" and their variants all mean "including but not limited to", unless otherwise specifically emphasized.

[0045] Embodiment 1

[0046] The lightning withstand level analysis method for transmission towers provided by the embodiments of this application can be executed by the processor of an electronic device when running a computer program with corresponding functions. By calling the lightning strike simulation model corresponding to the tower type from a pre-constructed model library according to the tower type of the tower to be analyzed; wherein, the model library includes multiple lightning strike simulation models pre-constructed based on different tower types; inputting the tower line parameters of the tower to be analyzed into the lightning strike simulation model to complete the configuration of the lightning strike simulation model; adjusting the amplitude of the lightning current, when the insulator critical flashover occurs in the lightning strike simulation model, taking the current value corresponding to the peak value of the current waveform at this time as the lightning withstand level of the tower to be analyzed. Pre-constructing the lightning strike simulation model corresponding to each tower type and directly calling the corresponding model according to the tower type of the tower to be analyzed during actual analysis, this method significantly improves the efficiency of lightning withstand level analysis. The pre-constructed model library avoids the process of starting from scratch for modeling each time, greatly saving time and labor costs, and is applicable to scenarios where it is necessary to batch check the lightning withstand levels of multiple towers.

[0047] As Figure 1 shown, the lightning withstand level analysis method for transmission towers provided by the embodiments of this application includes the following steps S101 to S103:

[0048] Step S101, according to the tower type of the tower to be analyzed, call the lightning strike simulation model corresponding to the tower type from a pre-constructed model library; wherein, the model library includes multiple lightning strike simulation models pre-constructed based on different tower types.

[0049] In application, the specific tower type of the tower to be analyzed (for example, cup-shaped) can be input or selected. The system automatically identifies and matches the corresponding lightning strike simulation model. After successful matching, the system extracts the corresponding simulation model from the model library according to the tower type information and loads it into the analysis environment.

[0050] Step S102, input the tower line parameters of the tower to be analyzed into the lightning strike simulation model to complete the configuration of the lightning strike simulation model.

[0051] In the application, the user can input the collected tower line parameters into the lightning strike simulation model through the man-machine interaction interface. The tower line parameters include at least one of the length of each section of the tower structure, the length of the insulator, the grounding resistance value, the inner diameter of each phase of the transmission line, the DC resistance, the height, the middle distance, the number of splits, and the split spacing. According to the input parameters, the system will automatically configure each module in the simulation model, such as the tower module, the insulator module, the transmission line module, etc. After the configuration is completed, a complete simulation model will be generated, ready for the next step of analysis.

[0052] In the application, the system can also verify the input parameters to ensure that they are within a reasonable range. If abnormal or missing parameters are found, the system can prompt the user to make corrections or supplements.

[0053] Step S103: Adjust the amplitude of the lightning current. When the insulator in the lightning strike simulation model reaches critical flashover, the current value corresponding to the peak of the current waveform at this time is output as the lightning withstand level of the tower to be analyzed.

[0054] In the application, set the initial amplitude of the lightning current, usually starting from a lower value and gradually increasing. Start the simulation program to simulate the response of the tower under the action of the lightning current. During the simulation process, the system will monitor the state of the insulator in real time, especially the electric field strength and the development of the leader. When the insulator in the simulation model reaches the critical flashover state, the system will automatically detect and record the current value corresponding to the peak of the current waveform at this time. This current value is the lightning withstand level of the tower to be analyzed.

[0055] In the embodiment of the present application, a lightning strike simulation model corresponding to each tower type is pre-constructed, and when actually analyzing, the corresponding model is directly called according to the tower type of the tower to be analyzed. This method significantly improves the efficiency of the lightning withstand level analysis. The pre-constructed model library avoids the process of starting from scratch for modeling each time, greatly saving time and labor costs, and is applicable to scenarios where lightning withstand level verification needs to be carried out for multiple towers in batches.

[0056] In one embodiment, before step S101, it includes:

[0057] Based on each tower type, construct the corresponding lightning strike simulation model respectively;

[0058] Among them, as Figures 2 to 11 shown, the tower types include the wine glass type as Figure 2 shown, the cat head type as Figure 3 shown, the AC single-circuit dry type as Figure 4 shown, the AC double-circuit horn type as Figure 5 shown, the umbrella type as Figure 6 shown, the drum type as Figure 7 shown, the drum type as Figure 8The shown type-I string DC horn type, such as Figure 9 The shown type-V string DC horn type, such as Figure 10 The shown type-I string DC cross type and such as Figure 11 At least one of the shown type-V string DC cross types.

[0059] In applications, the goblet tower is used for single-circuit AC transmission lines. It has a unique goblet shape, with a simple and stable structure, and is suitable for transmission lines with medium and low voltage levels. The cat-head tower is used for single-circuit AC transmission lines. Its shape is similar to that of a cat's head, with a compact structure and good mechanical strength, and is suitable for various terrain conditions. The AC single-circuit cross tower is used for single-circuit AC transmission lines. Its shape is similar to the Chinese character 'gan', with high mechanical strength and stability, and is suitable for long transmission line segments. The AC double-circuit horn tower is used for double-circuit AC transmission lines. Its shape is similar to a horn type, with a complex structure but can effectively support the two-circuit transmission line, and is suitable for transmission lines with high voltage levels. The umbrella tower is also used for double-circuit AC transmission lines. Its shape is similar to an umbrella, with good insulation performance and mechanical strength, and is suitable for transmission lines under harsh weather conditions. The drum tower is also used for double-circuit AC transmission lines. Its shape is similar to a drum, with a stable structure and good wind resistance, and is suitable for special terrains such as coastal areas or mountainous areas. The type-I string DC horn tower is used for DC transmission lines. Its characteristic is the use of type-I string insulator configuration, and is suitable for high-voltage DC transmission systems. The type-V string DC horn tower is also used for DC transmission lines, but uses type-V string insulator configuration, with better electrical performance and mechanical strength. The type-I string DC cross tower is used for DC transmission lines. Its shape is similar to the Chinese character 'gan', uses type-I string insulator configuration, and is suitable for long-distance DC transmission lines. The type-V string DC cross tower is also used for DC transmission lines, but uses type-V string insulator configuration, with higher electrical performance and mechanical stability.

[0060] The embodiments of the present application consider the classic tower types of poles and towers, and pre-construct a lightning strike simulation model library for various tower types in advance, ensuring that the corresponding models can be quickly called for analysis in actual applications. This pre-construction method not only saves the time for re-modeling during each analysis, but also ensures the consistency and reliability of the models. For different tower types, targeted simulations can be carried out, thereby improving the accuracy and applicability of the analysis results.

[0061] In one embodiment, as Figure 12 shown, based on each tower type, the corresponding lightning strike simulation models are respectively constructed, including the following steps S201 and S206:

[0062] Step S201: Import the lightning current module.

[0063] In an application, during the process of building a lightning strike simulation model, it is first necessary to import a lightning current module. The lightning current module is used to simulate the current waveform generated during an actual lightning strike. The waveform of the lightning current can be a triangular wave, a double-exponential wave, or other standard waveforms. When importing the lightning current module, its parameters need to be configured, such as peak current, rise time, and duration. These parameters can be set according to actual lightning data or standard specifications. In addition, the lightning current module also needs to be connected to subsequent tower modules and other modules to ensure that the current can flow correctly into the simulation model. By importing and configuring the lightning current module, an accurate input signal can be provided for subsequent simulations.

[0064] Step S202: Based on different wave impedance section modules, build a tower module of a specified tower type.

[0065] In an application, each wave impedance section module represents a part of the tower and has specific electrical characteristics (such as resistance, inductance, and capacitance). According to the specified tower type (such as cup-shaped, cat-head-shaped, etc.), these wave impedance sections are connected in the actual structural order to form a complete tower module. This segmented modeling method can flexibly build towers of different tower types and can more accurately simulate the propagation process of current in the tower, thereby improving the accuracy of the simulation.

[0066] Step S203: Import an insulator module.

[0067] In an application, the insulator module is used to simulate the insulators on the tower, which is an important component to prevent the direct flow of lightning current into the ground. The parameters of the insulator module include the length of the insulator, material characteristics (such as dielectric constant), and flashover characteristics. When importing the insulator module, it needs to be configured according to the actual type and specifications of the insulators used. For example, for different types of insulators (such as porcelain insulators, composite insulators, etc.), their electrical characteristics and flashover voltages will be different. By importing and configuring the insulator module, the performance of the insulator under lightning strike conditions can be accurately simulated, thereby evaluating its lightning withstand performance. In addition, the insulator module also needs to be connected to the tower module and the transmission line module to ensure the integrity and consistency of the current path.

[0068] Step S204: Import overhead transmission line components and build a transmission line module.

[0069] In an application, the transmission line module is used to simulate the electrical characteristics of the transmission line. When importing overhead transmission line components, the appropriate number of conductors and configurations need to be selected according to the specific tower type. When building the transmission line module, the conductors need to be connected according to the actual layout and the mutual influence between the conductors needs to be considered. By importing and configuring the transmission line module, the electrical response of the transmission line under lightning strike conditions can be accurately simulated, thereby evaluating its lightning withstand performance.

[0070] Step S205: Import the ground resistance module.

[0071] In the application, the ground resistance module is used to simulate the electrical characteristics of the tower grounding system. After importing the ground resistance module, it is necessary to connect it to the tower module and the transmission line module to ensure that the current can flow into the ground correctly. By importing and configuring the ground resistance module, the performance of the grounding system under lightning strike conditions can be accurately simulated, so as to evaluate its shunt effect on lightning current and protection ability.

[0072] Step S206: Connect the lightning current module, the tower module, the insulator module, the transmission line module and the ground resistance module to form a lightning strike simulation model of a specified tower type.

[0073] In the application, the lightning current module is connected to the top or conductor of the tower module to simulate the injection point of the lightning current. The tower module, the insulator module, the transmission line module and the ground resistance module are connected according to the actual electrical connection method. For example, the tower module is connected to the insulator module, the insulator module is connected to the transmission line module, and the transmission line module is connected to the ground resistance module. Among them, the lightning strike simulation model of the single-circuit AC dry-type is as Figure 13 shown, and the lightning strike simulation model of the double-circuit AC horn-type is as Figure 14 shown.

[0074] In the embodiment of the present application, the lightning strike simulation model is constructed in a modular manner, making the model construction process more systematic and standardized. Each module (such as the lightning current module, the tower module, the insulator module, etc.) is carefully designed to ensure the accuracy and reliability of the model. And the tower module is built based on different wave impedance segment modules, and the tower module of any specified tower type can be formed. This method is convenient for subsequent maintenance and update. If a certain module needs to be improved or updated, only this module needs to be adjusted, instead of reconstructing the entire model, which improves the flexibility and scalability of the model.

[0075] In one embodiment, after importing the lightning current module, it further includes configuring the impulse form of the lightning current as a triangular wave current source and setting the time parameters of the triangular wave current source.

[0076] In the application, after importing the lightning current module, it is necessary to further configure the impulse form of the lightning current. The triangular wave current source can be selected as the standard waveform for simulating the lightning current. The triangular wave current source is a widely used standard waveform, and its characteristic is that it has linear rising and falling stages, and can better simulate the current change in the actual lightning strike process. By configuring the triangular wave current source, the actual characteristics of the lightning current can be more accurately reflected.

[0077] In an application, during the configuration process, set the time parameters of the triangular-wave current source, such as 2.6 / 50 μs. The specific value can be set according to actual lightning data or standard specifications. By reasonably setting the time parameters, it can be ensured that the lightning current waveform in the simulation model is highly consistent with the actual lightning strike situation, thereby improving the accuracy and reliability of the simulation. In addition, other parameters, such as the peak current and the smoothness of the waveform, can be adjusted as needed to further optimize the simulation results. Through these detailed configuration steps, it can be ensured that the lightning current module can provide accurate and reliable input signals during the simulation process.

[0078] In the embodiment of the present application, by configuring the impact form of the lightning current as a triangular-wave current source and setting its time parameters, it is ensured that the waveform of the lightning current conforms to the actual lightning strike situation. The standard triangular-wave current source is a widely used waveform, and its rise time and peak time parameters can be adjusted according to the actual situation, so as to more accurately simulate different types of lightning strikes. This configuration method not only improves the accuracy of the simulation results, but also makes the simulation process more controllable and repeatable, which helps to verify and optimize lightning protection measures.

[0079] In one embodiment, it further includes:

[0080] According to the lightning strike form, select the connection node of the lightning current module; when the lightning strike form is the backflashover form, the lightning current module is connected to the top of the tower; when the lightning strike form is the shielding failure form, the lightning current module is connected to the conductor;

[0081] Among them, for the same tower type, according to different lightning strike forms, a lightning strike simulation model corresponding to the tower type under the backflashover form and a lightning strike simulation model corresponding to the tower type under the shielding failure form are respectively established.

[0082] In an application, the backflashover form means that the lightning current directly hits the top of the tower pole and is conducted to the ground through the tower pole structure. In this case, the connection point of the lightning current module should be set at the highest point of the tower pole, usually the position of the top of the tower or the lightning rod. This can simulate the process of the lightning current being injected from the top of the tower and propagating downward through the tower pole structure. In this way, the propagation path of the lightning current in the tower pole, the electric field distribution, and the flashover situation of the insulator under the backflashover form can be analyzed in detail, so as to evaluate the lightning withstand level of the tower pole under the backflashover form.

[0083] In an application, the shielding failure form means that the lightning current first hits the ground or other objects near the transmission line and then is conducted to the tower pole through the conductor. In this case, the connection point of the lightning current module should be set on the conductor, usually the position of the conductor near the tower pole. This can simulate the process of the lightning current being injected from the conductor and propagating through the transmission line and the tower pole structure. In this way, the propagation path of the lightning current in the conductor and the tower pole, the electric field distribution, and the flashover situation of the insulator under the shielding failure form can be analyzed in detail, so as to evaluate the lightning withstand level of the tower pole under the shielding failure form.

[0084] In applications, for the same type of tower, according to different lightning strike forms, it is necessary to separately establish lightning strike simulation models for back flashover and shielding failure forms. Each type of tower will have two independent simulation models: one for the back flashover form and the other for the shielding failure form. This classification and modeling method can more comprehensively evaluate the performance of the tower under different lightning strike conditions. By separately establishing the simulation models for these two forms, the lightning withstand performance under each form can be analyzed in more detail, thus providing a more scientific basis for lightning protection design. For example, in the back flashover form, the focus is on the electric field intensity at the top of the tower and the flashover of the insulator; while in the shielding failure form, the focus is on the electric field distribution and current path between the conductor and the tower.

[0085] The embodiments of the present application separately establish corresponding simulation models according to different lightning strike forms (back flashover and shielding failure), making the simulation results more comprehensive and accurate. Back flashover and shielding failure are two main lightning strike forms, and their influence mechanisms on the tower are different. By separately establishing the simulation models for these two forms, the lightning withstand performance under each form can be analyzed in more detail, thus providing a more scientific basis for lightning protection design. This detailed classification and modeling method helps to discover potential weaknesses and take targeted protection measures.

[0086] In one embodiment, it further includes:

[0087] When importing overhead transmission line components;

[0088] If the specified tower type is any one of the cup-shaped tower, cat-head tower, and AC single-circuit dry-type tower, import overhead transmission line components with 5 conductors;

[0089] If the specified tower type is any one of the AC double-circuit horn-type tower, umbrella-type tower, and drum-type tower, import overhead transmission line components with 8 conductors;

[0090] If the specified tower type is any one of the I-type string DC horn-type tower, V-type string DC horn-type tower, I-type string DC dry-type tower, and V-type string DC dry-type tower, import overhead transmission line components with 4 conductors.

[0091] In applications, if the specified tower type is any one of the cup-shaped tower, cat-head tower, or AC single-circuit dry-type tower, it is necessary to import overhead transmission line components with 5 conductors. These tower types are usually used in single-circuit transmission lines, so only 5 conductors are needed to simulate the actual transmission line. Specifically, these 5 conductors include 3 phase conductors (phase A, B, and C) and 2 ground wires. By importing 5 conductors, the electrical characteristics of the single-circuit transmission line can be accurately simulated, including the mutual influence between the phase conductors and the shunting effect of the ground wire on the lightning current. This configuration can ensure that the simulation results are highly consistent with the actual situation, thus improving the accuracy of the analysis.

[0092] In an application, when specifying any one of the tower types as the AC double-circuit horn type, umbrella type, or drum type, an overhead transmission line component with 8 conductors needs to be imported. These tower types are usually used for double-circuit transmission lines, so more conductors are required to simulate the actual transmission line. Specifically, these 8 conductors include 6 phase conductors (3 phase conductors for each circuit) and 2 ground wires. By importing 8 conductors, the electrical characteristics of the double-circuit transmission line can be detailedly simulated, including the mutual influence between the two circuits and the shunt effect of the ground wire on the lightning current. This configuration can more comprehensively reflect the behavior of the double-circuit transmission line under lightning strike conditions, thereby providing a more accurate assessment of the lightning withstand level.

[0093] In an application, when specifying any one of the tower types as the I-type string DC horn type, V-type string DC horn type, I-type string DC dry type, or V-type string DC dry type, an overhead transmission line component with 4 conductors needs to be imported. These tower types are usually used for DC transmission lines, so only 4 conductors are required to simulate the actual transmission line. Specifically, these 4 conductors include 2 positive conductors and 2 negative conductors. By importing 4 conductors, the electrical characteristics of the DC transmission line can be accurately simulated, including the mutual influence between the positive and negative conductors. This configuration can ensure that the simulation results are highly consistent with the actual situation, thereby improving the accuracy of the analysis.

[0094] The embodiment of the present application imports corresponding numbers of conductors according to different tower types, ensuring the accuracy of the transmission line module. The transmission line structures of different tower types are different, so the required numbers of conductors are also different. In this way, the actual transmission line can be more accurately simulated, thereby improving the accuracy of the simulation.

[0095] It should be understood that the magnitudes of the sequence numbers of the steps in the above embodiments do not mean the order of execution. The execution order of each process should be determined according to its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

[0096] Embodiment 2

[0097] The embodiment of the present application also provides a device for analyzing the lightning withstand level of a transmission tower, which is used to execute the steps in the embodiment of the method for analyzing the lightning withstand level of a transmission tower. The device for analyzing the lightning withstand level of a transmission tower can be a virtual appliance in an electronic device, run by the processor of the electronic device, or the electronic device itself.

[0098] As Figure 15 shown, the device 100 for analyzing the lightning withstand level of a transmission tower provided by the embodiment of the present application includes:

[0099] The model calling module 101 is configured to call a lightning strike simulation model corresponding to the tower type from a pre-constructed model library according to the tower type of the tower to be analyzed; wherein, the model library includes multiple lightning strike simulation models pre-constructed based on different tower types;

[0100] The input module 102 is configured to input the tower line parameters of the tower to be analyzed into the lightning strike simulation model;

[0101] The analysis module 103 is configured to adjust the amplitude of the lightning current, and when insulator critical flashover occurs in the lightning strike simulation model, output the current value corresponding to the peak value of the current waveform of the current lightning strike as the lightning withstand level of the tower to be analyzed.

[0102] In one embodiment, it further includes a model construction module 104, which is configured to:

[0103] Construct corresponding lightning strike simulation models respectively based on each tower type;

[0104] Wherein, the tower types include at least one of cup-shaped, cat-head-shaped, single-circuit AC dry-shaped, double-circuit AC horn-shaped, umbrella-shaped, drum-shaped, I-shaped string DC horn-shaped, V-shaped string DC horn-shaped, I-shaped string DC dry-shaped, and V-shaped string DC dry-shaped.

[0105] In one embodiment, the model construction module 104 is further configured to:

[0106] Import the lightning current module;

[0107] Build a tower module of the specified tower type based on different wave impedance segments modules;

[0108] Import the insulator module;

[0109] Import overhead transmission line components and build a transmission line module;

[0110] Import the grounding resistance module;

[0111] Connect the lightning current module, the tower module, the insulator module, the transmission line module, and the grounding resistance module to form a lightning strike simulation model of the specified tower type.

[0112] In one embodiment, it further includes an impulse form configuration module 105, which is configured to configure the impulse form of the lightning current as a triangular wave current source and set the time parameters of the triangular wave current source.

[0113] In one embodiment, it further includes a lightning strike form configuration module 106, which is configured to:

[0114] Select the connection node of the lightning current module according to the lightning strike form; when the lightning strike form is the back flashover form, the lightning current module is connected to the top of the tower; when the lightning strike form is the shielding failure form, the lightning current module is connected to the conductor;

[0115] Among them, for the same type of tower, according to different lightning strike forms, a lightning strike simulation model corresponding to the tower type under the back flashover form and a lightning strike simulation model corresponding to the tower type under the shielding failure form are established respectively.

[0116] In one embodiment, it further includes an overhead transmission line element selection module 107, which is used for:

[0117] When importing overhead transmission line elements;

[0118] If the specified tower type is any one of the goblet type, cat head type, and AC single-circuit dry type, import an overhead transmission line element with 5 conductors;

[0119] If the specified tower type is any one of the AC double-circuit horn type, umbrella type, and drum type, import an overhead transmission line element with 8 conductors;

[0120] If the specified tower type is any one of the I-type string DC horn type, V-type string DC horn type, I-type string DC dry type, and V-type string DC dry type, import an overhead transmission line element with 4 conductors.

[0121] In application, each module in the lightning withstand level analysis device of the transmission tower can be a software program module, can also be implemented by different logic circuits integrated in the processor, or can also be implemented by multiple distributed processors.

[0122] Embodiment III

[0123] As Figure 16 shown, the embodiment of the present application further provides an electronic device 200, including: at least one processor 201 ( Figure 16 only one processor is shown in the figure), a memory 202, and a computer program 203 stored in the memory 202 and operable on at least one processor 201. When the processor 201 executes the computer program 203, the steps in the above-mentioned various method embodiments are implemented.

[0124] In application, the electronic device may include, but is not limited to, a processor and a memory. Those skilled in the art can understand that Figure 16 merely an example of the electronic device, which does not constitute a limitation on the electronic device, and may include more or fewer components than shown in the figure, or combine certain components, or different components.

[0125] In an application, the processor may be a Central Processing Unit (CPU), and the processor may also be other general-purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field-Programmable Gate Arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0126] In an application, in some embodiments, the memory may be an internal storage unit of the electronic device, such as the hard disk or memory of the electronic device. In other embodiments, the memory may also be an external storage device of the electronic device, for example, a plug-in hard disk equipped on the electronic device, a Smart Media Card (SMC), a Secure Digital (SD) card, a Flash Card, etc. Further, the memory may also include both the internal storage unit and the external storage device of the electronic device. The memory is used to store an operating system, application programs, a BootLoader, data, and other programs, such as the program code of a computer program. The memory may also be used to temporarily store data that has been output or is to be output.

[0127] It should be noted that, regarding the information interaction, execution process, etc. between the above-mentioned devices / units, since they are based on the same concept as the method embodiments of the present application, for their specific functions and the technical effects brought about, reference may specifically be made to the method embodiment section, and details will not be elaborated herein.

[0128] Those skilled in the art can clearly understand that, for the convenience and conciseness of description, only the above-mentioned division of each functional unit and module is used as an example. In actual applications, the above-mentioned functions can be allocated to different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. Each functional unit and module in the embodiment can be integrated into a processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of a software functional unit. In addition, the specific names of each functional unit and module are only for the convenience of mutual distinction and do not limit the protection scope of this application. The specific working processes of the units and modules in the above system can refer to the corresponding processes in the foregoing method embodiments and will not be elaborated here.

[0129] An embodiment of this application also provides a computer-readable storage medium. The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps in the foregoing method embodiments can be implemented.

[0130] An embodiment of this application provides a computer program product, including a computer program. When the computer program product runs on an electronic device, the electronic device is enabled to execute the steps in the foregoing method embodiments.

[0131] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, to implement all or part of the processes in the above method embodiments of this application, a computer program can be used to instruct relevant hardware to complete. The computer program can be stored in a computer-readable storage medium. When the computer program is executed by a processor, the steps in the foregoing method embodiments can be implemented. Among them, the computer program includes computer program code, and the computer program code can be in the form of source code, object code, executable file or some intermediate form, etc. The computer-readable medium can at least include: any entity or device that can carry the computer program code to the device / electronic device, recording medium, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), electrical carrier signal, telecommunication signal, and software distribution medium. For example, a USB flash drive, a mobile hard disk, a magnetic disk or an optical disc, etc. In some jurisdictions, according to legislation and patent practice, the computer-readable medium cannot be an electrical carrier signal and a telecommunication signal.

[0132] In the above embodiments, the descriptions of the various embodiments each have their own emphasis. For parts not detailed or recorded in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0133] Those of ordinary skill in the art can realize that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed in a hardware or software manner depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered to exceed the scope of this application.

[0134] In the embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of modules or units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed couplings or direct couplings or communication connections to each other can be through some interfaces. The indirect couplings or communication connections of devices or units can be electrical, mechanical or other forms.

[0135] The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they can be located in one place, or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0136] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. And these modifications or replacements 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 this application, and should all be included in the protection scope of this application.

Claims

1. A method for analyzing the lightning resistance level of a transmission tower, characterized in that: include: According to the tower type of the tower to be analyzed, a lightning strike simulation model corresponding to the tower type is called from a pre-built model library; wherein the model library includes a plurality of lightning strike simulation models pre-built based on different tower types; Inputting the tower line parameters of the tower to be analyzed into the lightning strike simulation model to complete the configuration of the lightning strike simulation model; The amplitude of the lightning current is adjusted, and when the critical flashover of the insulator occurs in the lightning simulation model, the current value corresponding to the peak value of the current lightning current waveform is output as the lightning withstand level of the tower to be analyzed.

2. The method for analyzing the lightning resistance level of a transmission tower according to claim 1, characterized in that: Before calling the lightning strike simulation model corresponding to the tower type from the pre-built model library according to the tower type of the tower to be analyzed, the method includes: Based on each tower type, a corresponding lightning strike simulation model is constructed; Among them, the tower type includes at least one of a wine glass type, a cat head type, an AC single-circuit dry type, an AC double-circuit horn type, an umbrella type, a drum type, an I-type series DC horn type, a V-type series DC horn type, an I-type series DC dry type and a V-type series DC dry type.

3. The method for analyzing the lightning resistance level of a transmission tower according to claim 2, characterized in that: The corresponding lightning strike simulation model is constructed based on each tower type, including: Import lightning current module; Based on different wave impedance segment modules, tower modules of specified tower types are built; Import the insulator module; Import overhead transmission line components and build transmission line modules; Import the ground resistance module; The lightning current module, the tower module, the insulator module, the transmission line module and the grounding resistance module are connected to form a lightning strike simulation model of the specified tower type.

4. The method for analyzing the lightning resistance level of a transmission tower according to claim 3, characterized in that: After the lightning current module is introduced, the method further includes configuring the lightning current impact form to be a triangular wave current source, and setting the time parameters of the triangular wave current source.

5. The method for analyzing the lightning resistance level of a transmission tower according to claim 3, characterized in that: Also includes: According to the lightning strike form, a connection node of the lightning current module is selected; when the lightning strike form is a counter-strike form, the lightning current module is connected to the tower top; When the lightning strike is in the form of a shielding strike, the lightning current module is connected to a conductor; Among them, for the same tower type, according to different lightning strike forms, a lightning strike simulation model corresponding to the tower type under the counter-strike form and a lightning strike simulation model corresponding to the tower type under the shielding form are established respectively.

6. The method for analyzing the lightning resistance level of a transmission tower according to claim 3, characterized in that: Also includes: When importing overhead transmission line components; If the designated tower type is any one of a wine glass type, a cat head type, and an AC single-circuit dry type, an overhead transmission line element with 5 conductors is introduced; If the designated tower type is any one of the AC double-circuit horn type, umbrella type, and drum type, an overhead transmission line element with 8 conductors is introduced; If the designated tower type is any one of I-type series DC horn type, V-type series DC horn type, I-type series DC dry type, and V-type series DC dry type, an overhead transmission line element with 4 conductors is introduced.

7. A transmission tower lightning resistance level analysis device, characterized in that: include: A model calling module is used to call a lightning strike simulation model corresponding to the tower type to be analyzed from a pre-built model library according to the tower type of the tower to be analyzed; wherein the model library includes a plurality of lightning strike simulation models pre-built based on different tower types; An input module, used for inputting the tower line parameters of the tower to be analyzed into the lightning strike simulation model; The analysis module is used to adjust the amplitude of the lightning current. When the critical flashover of the insulator occurs in the lightning simulation model, the current value corresponding to the peak value of the current lightning current waveform is output as the lightning withstand level of the tower to be analyzed.

8. The transmission tower lightning resistance level analysis device according to claim 7, characterized in that: Also included are model building modules for: Based on each tower type, a corresponding lightning strike simulation model is constructed; Among them, the tower type includes at least one of a wine glass type, a cat head type, an AC single-circuit dry type, an AC double-circuit horn type, an umbrella type, a drum type, an I-type series DC horn type, a V-type series DC horn type, an I-type series DC dry type and a V-type series DC dry type.

9. The transmission tower lightning resistance level analysis device according to claim 8, characterized in that: The model building module is also used to: Import lightning current module; Based on different wave impedance segment modules, tower modules of specified tower types are built; Import the insulator module; Import overhead transmission line components and build transmission line modules; Import the ground resistance module; The lightning current module, the tower module, the insulator module, the transmission line module and the grounding resistance module are connected to form a lightning strike simulation model of the specified tower type.

10. The transmission tower lightning resistance level analysis device according to claim 9, characterized in that: It also includes an impulse form configuration module, which is used to configure the impulse form of the lightning current to be a triangular wave current source and set the time parameters of the triangular wave current source.

11. The transmission tower lightning resistance level analysis device according to claim 9, characterized in that: Also includes lightning strike pattern configuration module for: According to the lightning strike form, a connection node of a lightning current module is selected; when the lightning strike form is a counter-strike form, the lightning current module is connected to the tower top; when the lightning strike form is a shielding strike form, the lightning current module is connected to the conductor; Among them, for the same tower type, according to different lightning strike forms, a lightning strike simulation model corresponding to the tower type under the counter-strike form and a lightning strike simulation model corresponding to the tower type under the shielding form are established respectively.

12. The transmission tower lightning resistance level analysis device according to claim 9, characterized in that: Also included is an Overhead Transmission Line Component Selection Module for: When importing overhead transmission line components; If the designated tower type is any one of a wine glass type, a cat head type, and an AC single-circuit dry type, an overhead transmission line element with 5 conductors is introduced; If the designated tower type is any one of the AC double-circuit horn type, umbrella type, and drum type, an overhead transmission line element with 8 conductors is introduced; If the designated tower type is any one of I-type series DC horn type, V-type series DC horn type, I-type series DC dry type, and V-type series DC dry type, an overhead transmission line element with 4 conductors is introduced.

13. An electronic device, characterized in that: The electronic device comprises a processor, a memory, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the electronic device implements the method as claimed in any one of claims 1 to 6.

14. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

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