Method, System and Storage Medium for Establishing Lightning Strike Analysis Model of Base Station Tower System

Abstract

An embodiment of the present invention provides a method, a system, and a storage medium for establishing a lightning strike analysis model of a base station pole tower system. By using an electromagnetic simulation model and corresponding simulation results to correct a circuit, electrical parameters of each component and coupled electrical parameters between components connected in parallel are obtained. On this basis, a simulation circuit model of the base station pole tower system and a corresponding lightning strike experiment verification circuit are established according to the electrical connection relationship between the components. The coupled electromagnetic field simulation model and at least one of the electromagnetic simulation models are optimized according to the deviation between the lightning strike analysis simulation results output by the simulation circuit model and the lightning strike analysis test results output by the lightning strike experiment verification circuit until the deviation falls within a set deviation range, so as to obtain a simulation circuit model that can accurately analyze the impact of lightning strikes on the communication base station pole tower system, providing accurate theoretical support for the lightning protection of the communication base station pole tower system.

Description

Technical Field

[0001] The present invention relates to the field of communications, and in particular to a method, system and storage medium for establishing a lightning strike analysis model of a base station tower system. Background Art

[0002] Lightning strike is a high-voltage and high-current discharge phenomenon in nature, involving physical effects such as impact force, electromagnetic force, and Joule heat effect, which pose a serious threat to communication systems. In the lightest case, it affects the quality of communication, and in the most serious case, it causes damage to communication base stations.

[0003] With the development and full popularization of 5G technology, the lightning protection of communication base stations facing complex grounding environments is becoming increasingly important. The reason is as follows: When a lightning strike occurs on the base station tower system of a communication base station, the power supply and base station equipment of the base station tower system of the communication base station also need to withstand huge lightning current pulse impacts. However, due to the complex and diverse installation environments, installation methods and equipment types of the base station tower system of the communication base station in the outfield, it is not feasible to traverse and measure the distribution of lightning in the communication base station to analyze its impact, which brings great trouble to the lightning protection of communication base station equipment. Therefore, it is particularly important to accurately analyze the impact of lightning strikes on the base station tower system of a communication base station to provide theoretical support for the lightning protection of the base station tower system of the communication base station. Summary of the Invention

[0004] A method, system and storage medium for establishing a lightning strike analysis model of a base station tower system provided by an embodiment of the present invention solve the problem of how to accurately analyze the impact of lightning strikes on the base station tower system of a communication base station to provide theoretical support for the lightning protection of the base station tower system of the communication base station.

[0005] To solve the above technical problems, an embodiment of the present invention provides a method for establishing a lightning strike analysis model of a base station tower system, including:

[0006] Obtaining electrical parameters of each component through electromagnetic simulation models of each component in the base station tower system and corresponding simulation result correction circuits;

[0007] Establishing a coupled electromagnetic field simulation model for components with a parallel electrical connection relationship, and obtaining coupled electrical parameters between the components with a parallel connection according to the coupled electromagnetic field simulation model and the simulation result correction circuit;

[0008] Establishing a simulation circuit model of the base station tower system and a lightning strike experiment verification circuit corresponding to the simulation circuit model according to the electrical connection relationship between the components, the electrical parameters of the components, and the coupled electrical parameters between the parallel components;

[0009] Obtain the deviation between the lightning strike analysis simulation result output by the simulation circuit model and the lightning strike analysis test result output by the lightning strike experiment verification circuit. When the deviation is not within the set deviation range, optimize at least one of the coupled electromagnetic field simulation models between the parallel-connected components and the electromagnetic simulation models of the components until the deviation between the lightning strike analysis simulation result and the lightning strike analysis test result falls within the deviation range.

[0010] To solve the above technical problems, an embodiment of the present invention further provides a lightning strike analysis model establishment system for a base station tower system, including a model processing device, a simulation result correction circuit, and a lightning strike experiment verification circuit;

[0011] The model processing device is used to obtain the electrical parameters of the components through the electromagnetic simulation models of the components in the base station tower system and the simulation result correction circuit; and establish a coupled electromagnetic field simulation model for the components with a parallel electrical connection relationship, and obtain the coupled electrical parameters between the components according to the coupled electromagnetic field simulation model and the simulation result correction circuit;

[0012] The model processing device is further used to establish a simulation circuit model of the base station tower system according to the electrical connection relationship between the components, the electrical parameters of the components, and the coupled electrical parameters between the components with a parallel electrical connection relationship; the lightning strike experiment verification circuit is a circuit corresponding to implement the simulation circuit model;

[0013] The model processing device is further used to obtain the deviation between the lightning strike analysis simulation result output by the simulation circuit model and the lightning strike analysis test result output by the lightning strike experiment verification circuit. When the deviation is not within the set deviation range, optimize at least one of the electromagnetic simulation models of the components and the coupled electromagnetic field simulation models between the components with a parallel electrical connection relationship until the deviation between the lightning strike analysis simulation result and the lightning strike analysis test result falls within the deviation range..

[0014] To solve the above technical problems, an embodiment of the present invention further provides a computer-readable storage medium storing a computer program that can be executed by a processor to implement the steps of the above-mentioned lightning strike analysis model establishment method for a base station tower system.

[0015] Beneficial effects

[0016] The method, system and storage medium for establishing a lightning analysis model for a base station tower system provided by an embodiment of the present invention obtain electrical parameters of each component through an electromagnetic simulation model of each component in the base station tower system and a corresponding simulation result correction circuit; establish a coupled electromagnetic field simulation model for each component that is electrically connected in parallel, and obtain coupled electrical parameters between each component that is electrically connected in parallel according to the coupled electromagnetic field simulation model and the simulation result correction circuit; then, establish a simulation circuit model of the base station tower system and a lightning strike experiment verification circuit corresponding to the simulation circuit model according to the electrical connection relationship between each component, the electrical parameters of each component, and the coupled electrical parameters between each component that is connected in parallel; When the deviation between the lightning analysis simulation result output by the simulation circuit model and the lightning analysis test result output by the lightning experiment verification circuit is not within the set deviation range, the coupled electromagnetic field simulation model between the parallel components and at least one of the electromagnetic simulation models of the components are optimized according to the deviation until the deviation between the lightning analysis simulation result and the lightning analysis test result falls within the deviation range, thereby obtaining a simulation circuit model that can accurately analyze the impact of lightning strikes on the communication base station tower system, providing accurate theoretical support for the lightning protection of the communication base station tower system, and avoiding as much as possible the high voltage and high current discharge phenomenon caused by lightning strikes that affects the quality of communication or causes damage to the communication base station.

[0017] Other features and corresponding beneficial effects of the present invention are described in the latter part of the specification, and it should be understood that at least part of the beneficial effects become obvious from the description in the specification of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic flow chart of a method for establishing a lightning strike analysis model for a base station tower system provided in the first embodiment of the present invention;

[0019] Figure 2 A schematic diagram of a simulation result correction circuit structure provided in Embodiment 1 of the present invention;

[0020] Figure 3 A schematic diagram of a process of obtaining a measured equivalent self-inductance by correcting a circuit through simulation results provided in the first embodiment of the present invention;

[0021] Figure 4 A schematic diagram of a process for obtaining a measured equivalent mutual inductance by correcting a circuit through simulation results provided in the first embodiment of the present invention;

[0022] Figure 5 A schematic diagram of a lightning strike experiment verification circuit structure provided in Embodiment 1 of the present invention;

[0023] Figure 6 A schematic diagram of the structure of a base station tower system provided in Embodiment 2 of the present invention;

[0024] Figure 7 Schematic diagram of the method for establishing a lightning strike analysis model of the base station tower system provided in the second embodiment of the present invention;

[0025] Figure 8a Schematic diagram of the principle of the simulation result correction circuit provided in the second embodiment of the present invention;

[0026] Figure 8b Schematic diagram of the loop containing only the simulation result correction circuit provided in the second embodiment of the present invention;

[0027] FIG. 8C is a schematic diagram of the loop of the simulation result correction circuit including the object under test provided in the second embodiment of the present invention;

[0028] Figure 9 Schematic diagram of the lightning strike experiment verification circuit provided in the second embodiment of the present invention. Detailed implementation manners

[0029] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the embodiments of the present invention will be further described in detail below through specific implementation manners in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0030] Embodiment 1:

[0031] The following will further describe in detail the specific implementation manners of the present invention in conjunction with the accompanying drawings and embodiments. This embodiment provides a method for establishing a simulation circuit model that can accurately analyze the impact of lightning strikes on the communication base station tower system. Through this simulation circuit model, accurate theoretical support can be provided for the lightning protection of the communication base station tower system, and the phenomenon of high-voltage and large-current discharge caused by lightning strikes can be avoided as much as possible from affecting the communication quality or causing damage to the communication base station. Please refer to Figure 1 As shown, the method includes:

[0032] S101: Obtain the electrical parameters of each component through the electromagnetic simulation model of each component in the base station tower system and the corresponding simulation result correction circuit.

[0033] In this embodiment, each component in the base station tower system may include each component in the base station tower system that is affected by lightning strikes; of course, according to actual needs, a part of the components in the base station tower system that are affected by lightning strikes may also be selected, or all the components in the base station tower system may be selected. Specifically, it can be flexibly selected according to the type, structure and specific site environment of the base station tower system. For example, in an application example, the components of the base station tower system in S101 may include, but are not limited to: lightning rod of the base station tower system, tower, power core wire of the base station equipment, power line shielding layer of the base station equipment, and general ground wire.

[0034] In addition, it should be understood that when establishing electromagnetic simulation models for each component in this embodiment, the specific modeling algorithms and simulation software used can be flexibly selected. For example, but not limited to, ANSYS MAXWELL, ADS (Advanced Design System), Microwave Office, CST Microwave Studio, Ansoft Serenade, Ansoft Ensemble can be used.

[0035] In this embodiment, for at least one of the electrical parameters of each component in the base station tower system, it is not simply obtained by using the electromagnetic simulation model of the component. The electrical parameters output by the electromagnetic simulation model can also be tested and corrected by combining the simulation results of the corresponding electrical parameters of the correction circuit, so as to make the obtained electrical parameters as accurate as possible, and further make the subsequent simulation circuit model of the base station tower system based on this more accurate. And it should be understood that the electrical parameters of each component obtained in this embodiment can include at least one of various electrical parameters required for establishing the simulation circuit model of the base station tower system subsequently. For example, it can include but not limited to at least one of the equivalent self-inductance (i.e., the equivalent inductance of the component itself) and the equivalent resistance of each component. And for at least one of the equivalent self-inductance and the equivalent resistance, the corresponding simulation result correction circuit can be used for testing and correction according to requirements.

[0036] S102: Establish a coupled electromagnetic field simulation model for each component with a parallel electrical connection relationship, and obtain the coupled electrical parameters between the components with a parallel connection according to the coupled electromagnetic field simulation model and the simulation result correction circuit.

[0037] In this embodiment, the components with a parallel electrical connection relationship in the base station tower system include components directly connected in parallel by wires between components, and can also include components that do not use direct wire connections but indirectly form a parallel connection in the electrical connection relationship. It can be specifically selected according to actual needs.

[0038] It should be understood that the simulation software used to establish the coupled electromagnetic field simulation model in this embodiment can be the same as the simulation software used to establish the electromagnetic simulation models of each component above, or different simulation software can be selected according to requirements.

[0039] In the embodiment, when establishing a coupled electromagnetic field simulation model for each component with a parallel electrical connection relationship, a coupled electromagnetic field simulation model can be established based on the spatial position relationship between the components with a parallel connection and the electromagnetic simulation models of these components respectively, and the coupled electrical parameters between the components can be calculated through the coupled electromagnetic field simulation model.

[0040] In this embodiment, for at least one of the coupling electrical parameters of each part connected in parallel in the base station tower system, it is not simply obtained by using the electromagnetic simulation model of the components. The electrical parameters output by the coupled electromagnetic simulation model of the circuit can also be tested and corrected by combining the simulation results of the corresponding electrical parameters, so as to make the obtained coupling electrical parameters as accurate as possible, and further make the subsequent simulation circuit model of the base station tower system proposed based on this more accurate. It should be understood that the electrical parameters of each component connected in parallel obtained in this embodiment may include at least one of various coupling electrical parameters required for subsequent establishment of the simulation circuit model of the base station tower system. For example, it may include, but is not limited to, the mutual inductance parameter of the mutual coupling and mutual inductance effect between each component connected in parallel.

[0041] It should be understood that the components connected in parallel in the base station tower system may include only one group or multiple groups. For each group of components connected in parallel, the above method can be used, but is not limited to it, to obtain the coupling electrical parameters between each component in this group connected in parallel. For example, continuing with the above application example, one group of components with an electrical connection relationship of parallel connection includes: tower, power core wire, and power line shielding layer.

[0042] S103: Establish a simulation circuit model of the base station tower system and a lightning strike experiment verification circuit corresponding to the simulation circuit model according to the electrical connection relationship between each component, the electrical parameters of each component, and the coupling electrical parameters between each component connected in parallel.

[0043] After obtaining the electrical parameters of each component and the coupling electrical parameters between each component connected in parallel through the above two steps, a corresponding simulation circuit model for lightning strike analysis of the base station tower system can be established according to the electrical connection relationship between each component under the base station tower system, and a lightning strike experiment verification circuit for lightning strike experiment verification can be built. It should be understood that the simulation circuit model and the corresponding lightning strike experiment verification circuit established in this embodiment may be only a part of the circuit corresponding to the base station tower system affected by lightning strikes, or a global circuit corresponding to the base station tower system, and can also be flexibly set according to actual needs.

[0044] S104: Obtain the deviation between the lightning strike analysis simulation result output by the simulation circuit model and the lightning strike analysis test result output by the lightning strike experiment verification circuit. When the deviation is not within the set deviation range, optimize at least one of the coupled electromagnetic field simulation model between each component connected in parallel and the electromagnetic simulation model of each component until the deviation between the lightning strike analysis simulation result and the lightning strike analysis test result falls within the deviation range.

[0045] In this embodiment, after establishing the simulation circuit model of the base station tower system, instead of directly using this simulation circuit model to analyze the impact of lightning strikes on the base station tower system, a corresponding lightning strike experiment verification circuit will be built to further verify the obtained simulation circuit model and the accuracy of the obtained simulation circuit model. When its accuracy is not verified enough, at least one of the above-mentioned coupled electromagnetic field simulation model and the electromagnetic simulation models of each component will be optimized, and the simulation circuit model and the corresponding lightning strike experiment verification circuit will be optimized according to the electrical parameters and / or coupled electrical parameters obtained after optimization until the deviation between the lightning strike analysis simulation result and the lightning strike analysis test result falls within the set deviation range (that is, reaches a certain accuracy).

[0046] Among them, one verification method is: for the lightning strike experiment verification circuit corresponding to the obtained simulation circuit model, input the same lightning strike test parameters, and then respectively obtain the lightning strike analysis simulation result output by the simulation circuit model and the lightning strike analysis test result output by the lightning strike experiment verification circuit, and determine whether the above optimization is needed according to whether the deviation between the two falls within the set deviation range.

[0047] It should be understood that the above deviation range in this embodiment can be flexibly set according to specific application requirements. For example, the deviation can be set to 0, or the deviation can be set within a specific range value according to requirements.

[0048] In this embodiment, when it is determined that the above optimization is needed, the specific optimization strategy can also be flexibly set. For example: in an optimization example, considering the difficulty and accuracy of obtaining the coupled electrical parameters between components, which is relatively greater than the difficulty and accuracy of obtaining the electrical parameters of each component itself and has a relatively greater impact on the accuracy of the simulation circuit model, an optimization strategy can be set to preferentially optimize the coupled electromagnetic field simulation models corresponding to the components connected in parallel, so as to obtain the optimized coupled electrical parameters, and update the simulation circuit model and the corresponding lightning strike experiment verification circuit according to the optimized coupled electrical parameters; when the deviation between the lightning strike analysis simulation result output by the updated simulation circuit model and the lightning strike analysis test result output by the lightning strike experiment verification circuit is within the set range, the simulation models of the components do not need to be optimized; on the contrary, when the deviation is still not within the set deviation range, the electromagnetic simulation models of at least one component can be considered for optimization; or continue to optimize the coupled electromagnetic field simulation models corresponding to the components connected in parallel until the deviation is still not within the set deviation range when the optimization times N reach the set threshold, and then optimize the electromagnetic simulation models of at least one component. And it should be understood that when optimizing the electromagnetic simulation models of at least one component, the electromagnetic simulation models of all components or only some of them (such as the components with greater influence) can be selectively optimized, which can be specifically set flexibly according to requirements.

[0049] Of course, in another optimization example, the coupled electromagnetic field simulation models corresponding to the components connected in parallel can also be directly optimized; or the coupled electromagnetic field simulation models corresponding to the components connected in parallel and the coupled electromagnetic field simulation models of at least one component can be directly optimized.

[0050] For ease of understanding, the following embodiments will be further described with a specific application example for better understanding.

[0051] In this application example, the electrical parameters of each component obtained include the equivalent self-inductance and equivalent resistance of each component; correspondingly, by the electromagnetic simulation models of each component in the base station tower system and the corresponding simulation result correction circuit, the electrical parameters of each component that can be obtained include:

[0052] For each component, its equivalent resistance and equivalent self-inductance are calculated through its electromagnetic simulation model, and the measured equivalent self-inductance of the component is obtained through the simulation result correction circuit. When the inductance deviation between the equivalent self-inductance and the measured equivalent self-inductance is greater than or equal to the set inductance deviation, the electromagnetic simulation model of the component is adjusted until the inductance deviation between the obtained equivalent self-inductance and the measured equivalent self-inductance is less than the set inductance deviation; thereby making the equivalent self-inductance obtained through this electromagnetic simulation model more accurate. In this application example, considering that the accuracy of the equivalent resistance of the component obtained through the electromagnetic simulation model is already relatively high, the equivalent resistance may not be corrected through the simulation result correction circuit. Of course, in some application scenarios, the equivalent resistance obtained through the simulation result correction circuit can also be used for correction according to requirements, and the correction principle is the same as above, which will not be elaborated here.

[0053] For example, assume that the components of the base station tower system in this application example include: the lightning rod of the base station tower system, the tower, the power core wire of the base station equipment, the power line shielding layer of the base station equipment, and the total grounding wire.

[0054] For the lightning rod, an electromagnetic field simulation model of the lightning rod can be established to obtain the relationship between the equivalent self-inductance, equivalent resistance of the lightning rod and the length, material, diameter of the lightning rod and the frequency characteristics of the lightning current component; conduct experimental verification on the simulation result correction circuit of the corresponding lightning current test platform, analyze the difference between the experimental verification data and the simulation calculation result, optimize the electromagnetic field simulation model of the lightning rod, so as to obtain the mathematical expressions between the equivalent self-inductance, equivalent resistance of the lightning rod under the action of characteristic lightning current and its influencing factors.

[0055] For the power core wire of the base station equipment, an electromagnetic field simulation model of the power core wire can be established to obtain the relationship between the equivalent self-inductance, equivalent resistance of the power core wire and the length, material, diameter of the power core wire and the frequency characteristics of the lightning current component; conduct experimental verification on the simulation result correction circuit of the corresponding lightning current test platform, analyze the difference between the experimental verification data and the simulation calculation result, and optimize the electromagnetic field simulation model of the power core wire, so as to obtain the mathematical expressions between the equivalent self-inductance, equivalent resistance of the power core wire under the action of the characteristic lightning current and its influencing factors.

[0056] For the power line shielding layer of the base station equipment, an electromagnetic field simulation model of the power line shielding layer can be established to obtain the relationship between the equivalent self-inductance, equivalent resistance of the power line shielding layer and the length, material, diameter of the power line shielding layer and the frequency characteristics of the lightning current component; conduct experimental verification on the simulation result correction circuit of the corresponding lightning current test platform, analyze the difference between the experimental verification data and the simulation calculation result, and optimize the electromagnetic field simulation model of the power line shielding layer, so as to obtain the mathematical expressions between the equivalent self-inductance, equivalent resistance of the power line shielding layer under the action of the characteristic lightning current and its influencing factors.

[0057] For the acquisition methods of the equivalent self-inductance and equivalent resistance of other components, the above similar methods can also be adopted, which will not be elaborated here.

[0058] In addition, it should be understood that the specific types adopted in the above parts of this embodiment can be flexibly set according to requirements. For example, the tower in this example may include but not be limited to guyed masts, triangular towers, quadrilateral towers, single-pole towers, etc. The power lines of the base station equipment may include but not be limited to coaxial cables, twin-core cables, twin-core cables with shielding layers, three-core cables, and so on.

[0059] For the convenience of understanding, a simulation result correction circuit is taken as an example in this application example for illustration. Please refer to Figure 2 As shown, the simulation result correction circuit includes: a lightning current generation circuit and an electrical connection line that electrically connects the object under test to the lightning current generation circuit; the measured equivalent self-inductance of the component is obtained through the simulation result correction circuit. Please refer to Figure 3 As shown, it includes:

[0060] S301: Connect the lightning current generation circuit and the electrical connection line into a loop for testing to obtain the no-load equivalent inductance parameter L 11 as the reference, which is also the equivalent inductance parameter of the lightning current generation circuit and the electrical connection line itself.

[0061] S302: Keep the specifications and length of the electrical connection line unchanged, connect the component as the object under test to the lightning current generation circuit through the electrical connection line for testing, and obtain the load equivalent inductance parameter L 21, that is, the total equivalent inductance parameter of the lightning current generation circuit + electrical connection line + components.

[0062] S303: Take the difference between the load equivalent inductance parameter L 21 and the no-load equivalent inductance parameter L 11 as the measured equivalent self-inductance of the component.

[0063] In this application example, the coupled electrical parameters include the mutual inductance parameters of the mutual coupling effect between the components connected in parallel; correspondingly, according to the coupled electromagnetic field simulation model and the simulation results, the circuit is corrected to obtain the coupled electrical parameters between the components, including:

[0064] According to the spatial position relationship between the components connected in parallel and the electromagnetic simulation model, a coupled electromagnetic field simulation model is established. The equivalent mutual inductance between the components is calculated through the coupled electromagnetic field simulation model, and the measured equivalent mutual inductance between the components is obtained by correcting the circuit with the simulation results. When the inductance deviation between the corresponding equivalent mutual inductance and the measured equivalent mutual inductance is greater than or equal to the set mutual inductance deviation, the coupled electromagnetic field simulation model is adjusted until the inductance deviation between the corresponding equivalent mutual inductance and the measured equivalent mutual inductance is less than the set mutual inductance deviation.

[0065] The circuit structure for correcting the simulation results adopted here can be the same as the above-mentioned circuit structure for correcting the simulation results, and it also includes a lightning current generation circuit and an electrical connection line that electrically connects the object under test to the lightning current generation circuit; for the measured equivalent mutual inductance between the components obtained through the circuit for correcting the simulation results, please refer to Figure 4 as shown, including:

[0066] S401: Connect the lightning current generation circuit and the electrical connection line into a loop for testing to obtain the no-load equivalent inductance parameter L 12 ; that is, the equivalent inductance parameter of the lightning current generation circuit and the electrical connection line itself.

[0067] S402: Keep the specifications and length of the electrical connection line unchanged, and use the components connected in parallel as the object under test to be electrically connected to the lightning current generation circuit through the electrical connection line for testing to obtain the load equivalent inductance parameter L 22 ; that is, the total equivalent inductance parameter of the lightning current generation circuit + electrical connection line + components connected in parallel.

[0068] S403: Take the difference between the load equivalent inductance parameter L 22 and the no-load equivalent inductance parameter L 12 as the measured equivalent total inductance L all of the components connected in parallel; that is, the total equivalent inductance parameter of the components connected in parallel.

[0069] S404: Calculate the measured equivalent mutual inductance between components based on the actually measured equivalent total inductance L all and the equivalent self-inductance of each component connected in parallel

[0070] In this application example, during the above-mentioned correction process using the corrected circuit with the above-mentioned simulation results, a loop formed by the lightning current generating circuit and the electrical connection line, and a loop formed by the lightning current generating circuit, the electrical connection line, and the object under test can be set to be in a rectangular distribution, so as to reduce the influence of the lightning current generating circuit and the electrical connection line on the equivalent inductance of the object under test. And to further reduce this influence, the size of the rectangle enclosed by the loop of the rectangular distribution can also be set. For example, in the loop in a rectangular distribution, the distance between two parallel sides can be set to be greater than or equal to 1 meter. It should be understood that the specific value of the distance between the two parallel sides in this application example can be flexibly set according to the specific application scenario. For example, the distance between the two parallel sides can be set to be greater than or equal to 1 meter, 1.5 meters, 2 meters, 3 meters, etc.

[0071] In this application example, for the lightning strike experiment verification circuit, please refer to Figure 5 as shown, which includes a high-voltage DC charging unit, an energy storage unit connected in parallel with the high-voltage DC charging unit, a protection unit, and a waveform forming unit and a base station tower system equivalent circuit unit connected in series with the high-voltage DC charging unit, where

[0072] The base station tower system equivalent circuit unit includes a lightning rod equivalent circuit unit, a total grounding wire equivalent circuit unit connected in series with the waveform forming unit, and a tower equivalent circuit unit, a power supply core wire equivalent circuit unit, and a power supply line shielding layer equivalent circuit unit connected in parallel between the lightning rod equivalent circuit unit and the total grounding wire equivalent circuit unit. In this embodiment, corresponding sensors (such as current or voltage sensors, etc.) can be set at the positions of the corresponding branches to collect corresponding test information, and the test information collected by the sensors can also be displayed or output through a corresponding display device (such as an oscilloscope).

[0073] In this application example, the deviations between the lightning strike analysis simulation results output by the simulation circuit model and the lightning strike analysis test results output by the lightning strike experiment verification circuit include

[0074] Obtain the parameters of the measured lightning strike current of at least one component and / or branch combination in the lightning strike experiment verification circuit, as well as the parameters of the simulated lightning strike current of the corresponding component and / or branch combination in the simulation circuit model. Compare the parameters of the measured lightning strike current with the parameters of the simulated lightning strike current to obtain the deviation between the lightning strike analysis simulation result output by the simulation circuit model and the lightning strike analysis test result output by the lightning strike experiment verification circuit. The parameters of the measured lightning strike current in this application example may include, but are not limited to, the peak value, front time, half-peak time, and reverse polarity oscillation of the lightning strike current. In this way, the impact of lightning strikes on each branch combination of the base station tower system can be accurately analyzed through the simulation circuit model subsequently, and corresponding protection measures can be set in advance to avoid negative impacts or damage to the base station tower system caused by lightning strikes.

[0075] In this application example, the above-mentioned branch combination may include, but is not limited to, the combination of at least one of the lightning rod equivalent circuit unit and the tower equivalent circuit unit, the power core wire equivalent circuit unit, and the power line shielding layer equivalent circuit unit; for example, lightning rod equivalent circuit unit + tower equivalent circuit unit, lightning rod equivalent circuit unit + power core wire equivalent circuit unit, lightning rod equivalent circuit unit + power line shielding layer equivalent circuit unit, lightning rod equivalent circuit unit + tower equivalent circuit unit + power core wire equivalent circuit unit, lightning rod equivalent circuit unit + power core wire equivalent circuit unit + power line shielding layer equivalent circuit unit, lightning rod equivalent circuit unit + tower equivalent circuit unit + power core wire equivalent circuit unit + power line shielding layer equivalent circuit unit, etc.

[0076] It can be seen that the method for establishing the lightning strike analysis model of the base station tower system provided in this embodiment can obtain the electrical parameters of each component and the coupled electrical parameters between the components connected in parallel through the electromagnetic simulation model and the corresponding simulation result correction circuit; and on this basis, establish a simulation circuit model of the base station tower system and a corresponding lightning strike experiment verification circuit according to the electrical connection relationship between the components, and optimize at least one of the coupled electromagnetic field simulation model and the electromagnetic simulation model according to the deviation between the lightning strike analysis simulation result output by the simulation circuit model and the lightning strike analysis test result output by the lightning strike experiment verification circuit until the deviation falls within the set deviation range, so as to obtain a simulation circuit model that can accurately analyze the impact of lightning strikes on the communication base station tower system. Through this simulation circuit model, the distribution of lightning strike current on the corresponding branch combination can be predicted and analyzed, providing accurate theoretical support for the lightning protection of the communication base station tower system.

[0077] Embodiment 2:

[0078] For ease of understanding, this embodiment is described in combination with a specific structural example of a base station tower system on the basis of the above embodiment.

[0079] Please refer toFigure 6 As shown in the figure, the main components of the base station tower system provided by the embodiment include: lightning rod 61, tower 62, power supply 65, power line 64 (including power box shielding layer and power core wire), main grounding wire 66, grounding resistance 67, and base station equipment 63. The power supply line 64 of the base station equipment 63 runs along the tower 62 to supply power to the base station equipment.

[0080] In this embodiment, taking the establishment of an electromagnetic field simulation model using ANSYS MAXWELL simulation software as an example for illustration. Please refer to Figure 7 As shown in the figure, the process of establishing the lightning strike analysis model of the base station tower system in this example is as follows, including:

[0081] S701: In the ANSYS MAXWELL environment, according to the obtained spectral distribution of lightning current, establish the electromagnetic field simulation models of the lightning rod, tower, power core wire of the power line, shielding layer of the power line, and grounding wire.

[0082] For example, for the lightning rod, an electromagnetic field simulation model of the lightning rod can be established in the ANSYS MAXWELL environment according to parameters such as the length, material, and diameter of the lightning rod, and the relationship between the equivalent self-inductance, equivalent resistance of the lightning rod and the length, material, diameter of the lightning rod, as well as the frequency characteristics of the lightning current components can be obtained. The establishment methods of the electromagnetic field simulation models of other components are similar and will not be elaborated here.

[0083] S702: Input the relevant structural parameters of each component (such as inputting parameters such as the length, material, and size of the component) and the preset deviation between the simulation results and the measured results verified by experiments.

[0084] In this example, the equivalent self-inductance and equivalent resistance of the component can be calculated through the electromagnetic field simulation model of the component (such as lightning rod, tower, power core wire of the power line, shielding layer of the power line, grounding wire). For the equivalent self-inductance, it can be compared with the measured equivalent self-inductance obtained by testing the component through the circuit corrected by the simulation results to see if the deviation between the two is within the set self-inductance deviation range. If not, the electromagnetic field simulation model of the component needs to be optimized until the deviation between the two is within the set self-inductance deviation range.

[0085] S703: Use the obtained electromagnetic field simulation models of each component to simulate and calculate the equivalent self-inductance and equivalent resistance of each component (lightning rod, tower, shielding layer of the power line, power core wire of the power line, grounding wire).

[0086] S704: Obtain the equivalent mutual inductance between the tower, shielding layer of the power line, and power core wire of the power line with a parallel electrical connection relationship.

[0087] In this example, a coupled mutual inductance electromagnetic field simulation model is established for the tower, the power line shielding layer, and the power line source core wire with a parallel electrical connection relationship. The equivalent mutual inductance between the tower, the power line shielding layer, and the power line source core wire is calculated through the coupled mutual inductance electromagnetic field simulation model, and the measured equivalent mutual inductance between the components is obtained by correcting the circuit with the simulation results. When the inductance deviation between the corresponding equivalent mutual inductance and the measured equivalent mutual inductance is greater than or equal to the set mutual inductance deviation, the coupled mutual inductance electromagnetic field simulation model is adjusted until the inductance deviation between the corresponding equivalent mutual inductance and the measured equivalent mutual inductance is less than the set mutual inductance deviation. Then, the equivalent mutual inductance between the tower, the power line shielding layer, and the power line is calculated using the corrected coupled mutual inductance electromagnetic field simulation model.

[0088] S705: Obtain the equivalent self-inductance, equivalent resistance of the lightning rod, tower, power line shielding layer, power line source core wire, and grounding wire in the communication tower system, as well as the functional expressions between the equivalent mutual inductance of the mutual inductance coupling between the tower, the power line shielding layer, and the power line source core wire and the structural parameters, and the functional expressions of the equivalent resistance of each component.

[0089] S706: Based on the above results and the electrical connection relationships of the components in the base station tower system, establish a simulation circuit model of the base station tower system.

[0090] In this example, the simulation circuit model can be established in the MATLAB or ATP software environment.

[0091] S707: Obtain the current parameters (i.e., lightning strike analysis simulation data) that generate the given lightning current waveform value through the simulation circuit model.

[0092] S708: Establish a corresponding lightning current experimental verification circuit (i.e., lightning strike experimental verification circuit) for the simulation circuit model and conduct experimental verification. The objects of experimental verification include each component (lightning rod, tower, power line shielding layer, power line source core wire, grounding wire, etc.) and branch combinations (e.g., lightning rod + tower, lightning rod + power line shielding layer, lightning rod + power line core wire, lightning rod + power line shielding layer + power line core wire, lightning rod + tower + power line shielding layer, lightning rod + tower + power line shielding layer + power line core wire, etc.) of the base station tower system.

[0093] S709: Analyze the differences between the experimental verification data and the lightning strike analysis simulation data. If the deviation between the two is not within the preset deviation range, optimize the above-mentioned coupled mutual inductance electromagnetic field simulation model, or recalculate after the coupled mutual inductance electromagnetic field simulation model + electromagnetic simulation model until the deviation between the two is within the preset deviation range.

[0094] For the simulation result correction circuit and the inductance correction process given in this example, please refer to Figures 8a - 8c as shown.

[0095] Refer to Figure 8a the schematic diagram of the simulation result correction circuit shown in Figure 8a where C is the energy storage capacitor, K is the discharge switch, and L 11 is the self-inductance of the simulation result correction circuit (i.e., the no-load equivalent inductance parameter as a reference), and L measured is the equivalent inductance of the object under test. As shown above, the object under test includes, but is not limited to, components of the base station tower system such as lightning arresters, towers, power line shielding layers, and power line cores, and also includes combinations of the tower, power line shielding layer, and power line core that are mutually coupled.

[0096] Refer to Figure 8b the loop that only contains the self-inductance L of the simulation result correction circuit shown in 11 By controlling the discharge voltage on the energy storage capacitor C, a current waveform W that only contains Figure 8a the self-inductance L of the loop of the simulation result correction circuit shown in 11 can be output. 11 According to the waveform period T1 parameter of the lightning current waveform W 11 and the relationship between the energy storage capacitor C and the inductance L 11 there is:

[0097]

[0098] Thus, according to the period T1 and the energy storage capacitor C, the self-inductance L of the lightning current simulation result correction circuit can be obtained 11 . Among them, Figure 8a the self-inductance L of the simulation result correction circuit in 11 includes the wiring inductance inside the lightning generator and the inductance of all electrical connections between the lightning generator and the object under test. Here, the electrical connection can be a metal ribbon, a metal wire, etc.; in order to reduce the influence of the electromagnetic field between electrical connection lines on the experimental value of the inductance, the electrical connection lines l 11 , l 12 , l 13 and l 14 are arranged in a rectangular layout, and there should be a certain distance between the electrical connection lines l 11 and l 13 as well as between l 12 and l 14 , and they cannot be too close. For example, the distance can be set to be greater than or equal to 1 meter, 2 meters, or 3 meters, etc. Figure 8b The lengths of each part of the electrical connection line in 11 , l 12 , l 13 and l 14 can be adjusted according to the length dimension of the object under test (including components such as lightning rods and towers).

[0099] Refer to Figure 8c, it is a simulation result correction circuit after connecting the object under test (i.e., the test sample in the figure). To ensure the accuracy of the test results, Figure 8c the electrical connection line l 21 , l 22 and l 23 The sum of and Figure 8c the l in 11 , l 12 , l 13 and l 14 The sum of the lengths of each part, or rather, the sum of the inductances, should be exactly equal. Similarly, by controlling the discharge voltage on the energy storage capacitor C, the current output waveform W of the simulation result correction circuit containing only the object under test can be output 21 . According to the waveform period T2 parameter of the lightning current waveform W 21 and the relationship between the energy storage capacitor C and the inductor L 21 :

[0100]

[0101] According to the period T2 and the energy storage capacitor C, the total inductance L of the simulation result correction circuit containing the object under test can be obtained 21 . Thus, it is obtained that the inductance of the object under test is: L 测 = L 21 - L 11 .

[0102] In the above verification process, the object under test can be a component of a separate communication tower system, such as a lightning rod, a tower, a power line shielding layer, and a power line core wire, or it can be a component combination. For example, "tower + power line shielding layer", "tower + power line shielding layer + power line core wire", and this component combination exactly simulates the high-resistance state and low-resistance state of the lightning protection device designed and installed between the power line core wire and the shielding layer of the base station tower system.

[0103] See Figure 9 , establish a simulation circuit model of a communication tower system including a lightning rod, a tower, a power line power core wire, a power line shielding layer, a grounding wire, a grounding resistance, and the common-mode protection and differential-mode protection of the power supply of the base station equipment, and calculate the capacitance C, inductance L1, waveform adjustment resistance R of the simulation circuit model under the injection of a lightning current component with specific loads (in addition to lightning rods, towers, power lines, etc., it can also include grounding connection lines and grounding resistances) and specific electrical parameters, as well as the shunt characteristics of the lightning current in different branches of the tower, power line shielding layer, and power line core wire. The shunt characteristics of each branch can include parameters such as the peak value, wavefront time, half-peak time, and reverse-polarity oscillation of the lightning current, as well as the proportional relationship of the lightning current shunt in each branch.

[0104] Figure 9The lightning strike experiment verification circuit shown includes a high-voltage DC charging unit, an energy storage unit connected in parallel with the high-voltage DC charging unit, a protection unit, and a waveform forming unit and a base station tower system equivalent circuit unit connected in series with the high-voltage DC charging unit, where: The high-voltage DC charging unit consists of a voltage regulator Tr, a transformer Tt, a rectifier silicon stack D, and a charging current limiting resistor R1; the energy storage unit is completed by a capacitor C; the protection unit consists of a resistor R2 and a switch S connected in series; the discharge control unit is a discharge switch K; a resistor R, an inductor L1, and a capacitor C are the waveform forming unit, and their specific electrical parameter values are obtained through simulation calculation according to the above-mentioned process to generate circuit parameters that meet the characteristic load and the given current waveform; the base station tower system equivalent circuit unit is characterized by a circuit with two series branches + three branches in parallel. Among them, Lneedle, Rneedle represent the equivalent self-inductance and equivalent resistance of the lightning rod equivalent circuit unit, Lreport, Rreport represent the inductance and resistance corresponding to the branches of the tower equivalent circuit unit, Lshield, Rshield represent the inductance and resistance of the power supply line shielding layer equivalent circuit unit branch, Lcore, Rcore represent the inductance and resistance of the power supply line core wire equivalent circuit unit branch, and Lground, Rground represent the inductance and grounding resistance of the total grounding wire respectively. The shunt of the tower equivalent circuit unit branch, the shielding layer equivalent circuit unit branch, and the power supply core wire equivalent circuit unit branch in the communication tower system is extracted by current sensors Ireport, Ishield, and Icore and output to an oscilloscope for measurement; then, data analysis and processing are performed on the lightning current waveform measured by the oscilloscope, and the peak value, wavefront time, half-peak time, reverse polarity oscillation, and other parameters of the lightning current in each branch under the injection of a given lightning current and the proportional relationship of the lightning current shunt in each branch can be obtained; and it is compared with the peak value, wavefront time, half-peak time, reverse polarity oscillation, and other parameters of the lightning current in each corresponding branch output by the simulation circuit model and the proportional relationship of the lightning current shunt in each branch, and the deviation (i.e., the difference) between the two is analyzed. When the deviation is not within the preset range, at least one of the above-mentioned coupled electromagnetic field simulation model and electromagnetic field simulation model is optimized according to the deviation until the deviation falls within the set deviation range, so as to obtain a simulation circuit model that can accurately analyze the impact of lightning strikes on the communication base station tower system.

[0105] Embodiment 3:

[0106] This embodiment also provides a system for establishing a lightning strike analysis model of a base station tower system, including a model processing device, a simulation result correction circuit, and a lightning strike experiment verification circuit;

[0107] The model processing device can be various computer devices, which can be used to correct circuits through the electromagnetic simulation models and simulation results of various components in the base station tower system to obtain the electrical parameters of each component; and establish a coupled electromagnetic field simulation model for components with a parallel electrical connection relationship, and correct the circuit according to the coupled electromagnetic field simulation model and simulation results to obtain the coupled electrical parameters between each component; the specific process is as shown in the above embodiments and will not be elaborated here.

[0108] The model processing device is also used to establish a simulation circuit model of the base station tower system according to the electrical connection relationship between each component, the electrical parameters of each component, and the coupled electrical parameters between components with a parallel electrical connection relationship; the lightning strike experiment verification circuit is the circuit corresponding to implement the simulation circuit model; the specific process is as shown in the above embodiments and will not be elaborated here.

[0109] The model processing device is also used to obtain the deviation between the lightning strike analysis simulation result output by the simulation circuit model and the lightning strike analysis test result output by the lightning strike experiment verification circuit. When the deviation is not within the set deviation range, at least one of the electromagnetic simulation models of each component and the coupled electromagnetic field simulation models between components with a parallel electrical connection relationship is optimized until the deviation between the lightning strike analysis simulation result and the lightning strike analysis test result falls within the deviation range. The specific process is as shown in the above embodiments and will not be elaborated here.

[0110] This embodiment also provides a computer-readable storage medium, which stores a computer program that can be executed by a processor to implement the steps performed by the above model processing device in the method for establishing a lightning strike analysis model of the base station tower system as described above.

[0111] The computer-readable storage medium in this embodiment includes volatile or non-volatile, removable or non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, computer program modules, or other data). The computer-readable storage medium includes but is not limited to RAM (Random Access Memory), ROM (Read-Only Memory), EEPROM (Electrically Erasable Programmable Read Only Memory), flash memory or other memory technologies, CD-ROM (Compact Disc Read-Only Memory), digital versatile disc (DVD) or other optical disc storage, magnetic cassette, tape, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store the desired information and can be accessed by a computer.

[0112] This embodiment also provides a computer program (or computer software), which can be distributed on a computer-readable medium and executed by a computing device to implement the steps performed by the above-mentioned model processing device in the method for establishing a lightning strike analysis model of a base station tower system as described above; and in some cases, at least one of the steps shown or described can be executed in a sequence different from that described in the above embodiment.

[0113] This embodiment also provides a computer program product, including a computer-readable device, on which any of the above-mentioned computer programs is stored. In this embodiment, the computer-readable device may include the computer-readable storage medium as shown above.

[0114] It can be seen that those skilled in the art should understand that all or some of the steps in the methods disclosed above, and the functional modules / units in the systems and devices, can be implemented as software (which can be realized by computer program code executable by a computing device), firmware, hardware, and their appropriate combinations. In the hardware implementation, the division of the functional modules / units mentioned above does not necessarily correspond to the division of physical components; for example, a physical component can have multiple functions, or a function or step can be executed by several physical components in cooperation. Some or all physical components can be implemented as software executed by a processor, such as a central processing unit, a digital signal processor, or a microprocessor, or implemented as hardware, or implemented as an integrated circuit, such as an application-specific integrated circuit.

[0115] In addition, as is well known to those of ordinary skill in the art, a communication medium generally contains computer-readable instructions, data structures, computer program modules, or other data in a modulated data signal such as a carrier wave or other transmission mechanisms, and can include any information delivery medium. Therefore, the present invention is not limited to any specific combination of hardware and software.

[0116] The above content is a further detailed description of the embodiments of the present invention in combination with specific implementation manners, and it cannot be determined that the specific implementation of the present invention is only limited to these descriptions. For those of ordinary skill in the art of the present invention, without departing from the concept of the present invention, several simple deductions or substitutions can be made, which should all be regarded as belonging to the protection scope of the present invention.

Claims

1. A method for establishing a lightning strike analysis model of a base station tower system, comprising: Obtaining the electrical parameters of each component through the electromagnetic simulation models of each component in the base station tower system and the corresponding simulation result correction circuit; wherein, the simulation result correction circuit is used to obtain the measured equivalent self-inductance of each component; Establishing a coupled electromagnetic field simulation model for the components with a parallel electrical connection relationship, and obtaining the coupled electrical parameters between the components with a parallel connection according to the coupled electromagnetic field simulation model and the simulation result correction circuit; wherein, the coupled electromagnetic field simulation model includes a coupled mutual inductance electromagnetic field simulation model, and the coupled mutual inductance electromagnetic field simulation model is established according to the spatial position relationship and electromagnetic simulation models between the components with a parallel connection; Establishing a simulation circuit model of the base station tower system and a lightning strike experiment verification circuit corresponding to the simulation circuit model according to the electrical connection relationship between the components, the electrical parameters of each component, and the coupled electrical parameters between the components with a parallel connection; Obtaining the deviation between the lightning strike analysis simulation result output by the simulation circuit model and the lightning strike analysis test result output by the lightning strike experiment verification circuit, and when the deviation is not within the set deviation range, optimizing at least one of the coupled electromagnetic field simulation model between the components with a parallel connection and the electromagnetic simulation model of each component according to the deviation until the deviation between the lightning strike analysis simulation result and the lightning strike analysis test result falls within the deviation range.

2. The method for establishing a lightning strike analysis model of the base station tower system according to claim 1, characterized in that, The electrical parameters of each component include the equivalent self-inductance and equivalent resistance of each component; The obtaining the electrical parameters of each component through the electromagnetic simulation models of each component in the base station tower system and the corresponding simulation result correction circuit includes: For each component, calculating its equivalent resistance and equivalent self-inductance through its electromagnetic simulation model, and obtaining the measured equivalent self-inductance of the component through the simulation result correction circuit. When the inductance deviation between the equivalent self-inductance and the measured equivalent self-inductance is greater than or equal to the set inductance deviation, adjusting the electromagnetic simulation model of the component until the inductance deviation between the obtained equivalent self-inductance and the measured equivalent self-inductance is less than the set inductance deviation.

3. The method for establishing a lightning strike analysis model of the base station tower system according to claim 2, characterized in that, The coupled electrical parameters include the mutual inductance parameters of the mutual coupling and mutual inductance effects between the components with a parallel connection; The obtaining the coupled electrical parameters between the components according to the coupled electromagnetic field simulation model and the simulation result correction circuit includes: Calculating the equivalent mutual inductance between the components through the coupled mutual inductance electromagnetic field simulation model, and obtaining the measured equivalent mutual inductance between the components through the simulation result correction circuit. When the inductance deviation between the corresponding equivalent mutual inductance and the measured equivalent mutual inductance is greater than or equal to the set mutual inductance deviation, adjusting the coupled mutual inductance electromagnetic field simulation model until the inductance deviation between the corresponding equivalent mutual inductance and the measured equivalent mutual inductance is less than the set mutual inductance deviation.

4. The method for establishing a lightning strike analysis model of the base station pole tower system according to claim 2, characterized in that, The simulation result correction circuit includes a lightning current generating circuit and an electrical connection line that electrically connects the object under test to the lightning current generating circuit; Obtaining the measured equivalent self-inductance of the component through the simulation result correction circuit includes: Connect the lightning current generating circuit and the electrical connection line into a loop for testing to obtain the no-load equivalent inductance parameter L as a reference 11 ; Keep the specifications and length of the electrical connection line unchanged, and use the component as the object to be measured to be electrically connected to the lightning current generating circuit through the electrical connection line for testing, so as to obtain the load equivalent inductance parameter L 21 ; Take the difference between the equivalent inductance parameter L of the load 21 and the equivalent inductance parameter L of no load 11 as the measured equivalent self-inductance of the component.

5. The method for establishing a lightning strike analysis model of the base station tower system according to claim 3, wherein, The simulation result correction circuit includes a lightning current generating circuit and an electrical connection line that electrically connects the object under test to the lightning current generating circuit; Obtaining the measured equivalent mutual inductance between the components through the simulation result correction circuit includes: Connect the lightning current generating circuit and the electrical connection line into a loop for testing to obtain the no-load equivalent inductance parameter L as a reference 12 ; Keep the specifications and length of the electrical connection line unchanged, and use each of the components connected in parallel as the object to be measured, and electrically connect them to the lightning current generating circuit through the electrical connection line for testing to obtain the load equivalent inductance parameter L 22 ; Take the difference between the equivalent inductance parameter L of the load 22 and the equivalent inductance parameter L of the no-load 12 as the measured equivalent total inductance L of the components connected in parallel all ; Based on the measured equivalent total inductance L all and the equivalent self-inductance of each of the components connected in parallel, the measured equivalent mutual inductance between the components is calculated.

6. The method for establishing a lightning strike analysis model of the base station tower system according to claim 4 or 5, characterized in that, In the simulation result correction circuit, the loop formed by the lightning current generating circuit and the electrical connection line, and the loop formed by the lightning current generating circuit, the electrical connection line, and the object under test are in a rectangular distribution.

7. The method for establishing a lightning strike analysis model of the base station pole tower system according to claim 6, characterized in that, In the loop with the rectangular distribution, the distance between two parallel sides is greater than or equal to 1 meter.

8. The method for establishing a lightning strike analysis model of the base station tower system according to any one of claims 1-5, characterized in that, The components of the base station tower system include: lightning rod, tower, power core wire of the base station equipment, power line shielding layer of the base station equipment, and main grounding wire; The components with a parallel connection electrical connection relationship include the tower, the power core wire of the base station equipment, and the power line shielding layer of the base station equipment.

9. The method for establishing a lightning strike analysis model of the base station tower system according to claim 8, wherein The lightning strike experiment verification circuit includes a high-voltage DC charging unit, an energy storage unit connected in parallel with the high-voltage DC charging unit, a protection unit, and a waveform forming unit and a base station tower system equivalent circuit unit connected in series with the high-voltage DC charging unit; The base station tower system equivalent circuit unit includes a lightning rod equivalent circuit unit and a main grounding wire equivalent circuit unit connected in series with the waveform forming unit, and a tower equivalent circuit unit, a power core wire equivalent circuit unit of the base station equipment, and a power line shielding layer equivalent circuit unit of the base station equipment connected in parallel between the lightning rod equivalent circuit unit and the main grounding wire equivalent circuit unit; Obtaining the deviation between the lightning strike analysis simulation result output by the simulation circuit model and the lightning strike analysis test result output by the lightning strike experiment verification circuit includes: Obtaining the parameters of the measured lightning strike current of at least one component and / or branch combination in the lightning strike experiment verification circuit, and the parameters of the simulated lightning strike current of the corresponding component and / or branch combination of the simulation circuit model, comparing the parameters of the measured lightning strike current with the parameters of the simulated lightning strike current, and obtaining the deviation between the lightning strike analysis simulation result output by the simulation circuit model and the lightning strike analysis test result output by the lightning strike experiment verification circuit; The branch combination includes the combination of the lightning rod equivalent circuit unit and at least one of the tower equivalent circuit unit, the power core wire equivalent circuit unit of the base station equipment, and the power line shielding layer equivalent circuit unit.

10. The method for establishing a lightning strike analysis model of the base station tower system according to claim 9, characterized in that, The parameters of the measured lightning strike current include the peak value of the lightning strike current, the front time, the half-peak time, and the reverse polarity oscillation.

11. The method for establishing a lightning strike analysis model of the base station tower system according to any one of claims 1-5, characterized in that, Optimizing at least one of the coupled electromagnetic field simulation models between the components connected in parallel and the electromagnetic simulation models of the components includes: Optimize the coupled electromagnetic field simulation model to obtain optimized coupled electrical parameters, and update the simulation circuit model and the corresponding lightning strike experiment verification circuit according to the optimized coupled electrical parameters until the deviation between the lightning strike analysis simulation result and the lightning strike analysis test result falls within the deviation range; Or, According to the set optimization strategy, preferentially optimize the coupled electromagnetic field simulation model to obtain optimized coupled electrical parameters, and update the simulation circuit model and the corresponding lightning strike experiment verification circuit according to the optimized coupled electrical parameters; When the deviation between the lightning strike analysis simulation result output by the updated simulation circuit model and the lightning strike analysis test result output by the lightning strike experiment verification circuit is still not within the set deviation range, optimize the electromagnetic simulation model again.

12. A system for establishing a lightning strike analysis model of a base station pole tower system, characterized in that, It includes a model processing device, a simulation result correction circuit, and a lightning strike experiment verification circuit; The model processing device is used to obtain the electrical parameters of each component through the electromagnetic simulation model of each component in the base station tower system and the simulation result correction circuit; wherein, the simulation result correction circuit is used to obtain the measured equivalent self-inductance of each component; and establish a coupled electromagnetic field simulation model for components with a parallel electrical connection relationship, and obtain the coupled electrical parameters between the components according to the coupled electromagnetic field simulation model and the simulation result correction circuit; wherein, the coupled electromagnetic field simulation model includes a coupled mutual inductance electromagnetic field simulation model, and the coupled mutual inductance electromagnetic field simulation model is established according to the spatial position relationship and the electromagnetic simulation model between components with a parallel connection; The model processing device is further used to establish a simulation circuit model of the base station tower system according to the electrical connection relationship between the components, the electrical parameters of the components, and the coupled electrical parameters between components with a parallel electrical connection relationship; the lightning strike experiment verification circuit is a circuit corresponding to implement the simulation circuit model; The model processing device is further used to obtain the deviation between the lightning strike analysis simulation result output by the simulation circuit model and the lightning strike analysis test result output by the lightning strike experiment verification circuit. When the deviation is not within the set deviation range, optimize at least one of the electromagnetic simulation models of the components and the coupled electromagnetic field simulation models between components with a parallel electrical connection relationship until the deviation between the lightning strike analysis simulation result and the lightning strike analysis test result falls within the deviation range.

13. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program, and the computer program can be executed by a processor to implement the steps of the method for establishing a lightning strike analysis model of the base station tower system as described in any one of claims 1-11.

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