1. A lightning stroke analysis model building method of a base station tower system comprises the following steps:

acquiring 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;

establishing a coupling electromagnetic field simulation model for each component connected in parallel aiming at the electrical connection relationship, and correcting a circuit according to the coupling electromagnetic field simulation model and a simulation result to obtain coupling electrical parameters among the components connected in parallel;

establishing a simulation circuit model of the base station tower system and a lightning stroke experiment verification circuit corresponding to the simulation circuit model according to the electrical connection relation among the components, the electrical parameters of the components and the coupling electrical parameters among the parallel components;

and obtaining the deviation between the lightning stroke analysis simulation result output by the simulation circuit model and the lightning stroke analysis test result output by the lightning stroke experiment verification circuit, and optimizing at least one of the coupling electromagnetic field simulation model between the parallel components and the electromagnetic simulation model of each component according to the deviation when the deviation is not within a set deviation range until the deviation between the lightning stroke analysis simulation result and the lightning stroke analysis test result falls into the deviation range.

2. The method for establishing the lightning strike analysis model of the base station tower system according to claim 1, wherein the electrical parameters of each component comprise equivalent self-inductance and equivalent resistance of each component;

the step of obtaining 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 comprises the following steps:

and for each part, calculating to obtain the equivalent resistance and the equivalent self-inductance through an electromagnetic simulation model of the part, obtaining the actual measurement equivalent self-inductance of the part through the simulation result correction circuit, and adjusting the electromagnetic simulation model of the part when the inductance deviation between the equivalent self-inductance and the actual measurement equivalent self-inductance is greater than or equal to the set inductance deviation until the obtained inductance deviation between the equivalent self-inductance and the actual measurement equivalent self-inductance is smaller than the set inductance deviation.

3. The method for modeling lightning strike analysis on a tower system of a base station of claim 2, wherein the coupled electrical parameters include mutual inductance parameters of mutual coupling and mutual inductance of components connected in parallel; the coupling electromagnetic field simulation model comprises a coupling mutual inductance electromagnetic field simulation model;

the step of obtaining the coupling electrical parameters of the components according to the coupling electromagnetic field simulation model and the simulation result correction circuit comprises the following steps:

establishing a coupling mutual inductance electromagnetic field simulation model according to the space position relation between each component connected in parallel and an electromagnetic simulation model, calculating the equivalent mutual inductance between each component through the coupling mutual inductance electromagnetic field simulation model, obtaining the actual measurement equivalent mutual inductance between each component through the simulation result correction circuit, and adjusting the coupling mutual inductance electromagnetic field simulation model when the inductance deviation between the corresponding equivalent mutual inductance and the actual measurement equivalent mutual inductance is more than or equal to the set mutual inductance deviation until the inductance deviation between the corresponding equivalent mutual inductance and the actual measurement equivalent mutual inductance is less than the set mutual inductance deviation.

4. The method for establishing the lightning strike analysis model of the base station tower system according to claim 2, wherein the simulation result correction circuit includes a lightning current generation circuit and an electrical connection line for electrically connecting the object to be tested with the lightning current generation circuit;

the obtaining of the measured equivalent self-inductance of the component by the simulation result correction circuit includes:

connecting the lightning current generating circuit and the electric connecting circuit into a loop for testing to obtain a no-load equivalent inductance parameter L serving as a reference₁₁；

Keeping the specification and the length of the electric connecting line unchanged, and taking the part as a tested object to be electrically connected with the lightning current generating circuit through the electric connecting line for testing to obtain a load equivalent inductance parameter L₂₁；

The equivalent inductance parameter L of the load is measured₂₁Equivalent inductance parameter L with the no-load₁₁The difference is taken as the measured equivalent self-inductance of the component.

5. The method for building the lightning strike analysis model of the base station tower system according to claim 3, wherein the simulation result correction circuit includes a lightning current generation circuit and an electrical connection line for electrically connecting the object to be tested with the lightning current generation circuit;

the obtaining of the actual measurement equivalent mutual inductance between the components through the simulation result correction circuit comprises:

connecting the lightning current generating circuit and the electric connecting circuit into a loop for testing to obtain a no-load equivalent inductance parameter L serving as a reference₁₂；

Keeping the specification and the length of the electric connecting circuit unchanged, taking the parts connected in parallel as a tested object to be electrically connected with the lightning current generating circuit through the electric connecting circuit for testing to obtain a load equivalent inductance parameter L₂₂；

The equivalent inductance parameter L of the load is measured₂₂Equivalent inductance parameter L with the no-load₁₂The difference is used as the actual measurement equivalent total inductance L of each component connected in parallel_all；

According to the measured equivalent total inductance L_allAnd calculating the actual measurement equivalent mutual inductance among the components according to the respective equivalent self-inductance of the components connected in parallel.

6. The method for building the lightning strike analysis model of the base station tower system according to claim 4 or 5, wherein in the simulation result correction circuit, the circuit formed by the lightning current generation circuit and the electrical connection circuit and the circuit formed by the lightning current generation circuit, the electrical connection circuit and the measured object are distributed in a rectangular shape.

7. The method for building the lightning strike analysis model of the base station tower system according to claim 6, wherein in the circuit distributed in the rectangular shape, the distance between two parallel sides is greater than or equal to 1 m.

8. The method for establishing the lightning strike analysis model of the base station tower system according to any one of claims 1 to 5, wherein the components of the base station tower system comprise: the lightning rod, the tower, a power core wire of the base station equipment, a power line shielding layer of the base station equipment and a total grounding wire;

and each part of the electrical connection system in parallel connection comprises the tower, a power core wire and a power line shielding layer.

9. The method for establishing the lightning strike analysis model of the base station tower system according to claim 8, wherein the lightning strike experiment verification circuit comprises a high-voltage direct current charging unit, an energy storage unit and a protection unit which are connected with the high-voltage direct current charging unit in parallel, and a waveform forming unit and a base station tower system equivalent circuit unit which are connected with the high-voltage direct current charging unit in series;

the base station tower system equivalent circuit unit comprises a lightning rod equivalent circuit unit, a total grounding wire equivalent circuit unit, a tower equivalent circuit unit, a power core wire equivalent circuit unit and a power line shielding layer equivalent circuit unit, wherein the lightning rod equivalent circuit unit and the total grounding wire equivalent circuit unit are connected in series with the waveform forming unit;

the obtaining of the deviation between the lightning stroke analysis simulation result output by the simulation circuit model and the lightning stroke analysis test result output by the lightning stroke experiment verification circuit comprises:

acquiring parameters of actually measured lightning strike current of at least one component and/or branch combination in the lightning strike experiment verification circuit and parameters of simulated lightning strike current of the component and/or branch combination corresponding to the simulation circuit model, and comparing the parameters of the actually measured lightning strike current with the parameters of the simulated lightning strike current to obtain deviation between a lightning strike analysis simulation result output by the simulation circuit model and a lightning strike analysis test result output by the lightning strike experiment verification circuit;

the branch combination comprises a lightning rod equivalent circuit unit and at least one of the tower equivalent circuit unit, the power core wire equivalent circuit unit and the power line shielding layer equivalent circuit unit.

10. The method of claim 9, wherein the parameters of the measured lightning current include a peak value, a wavefront time, a half-peak time, and a reverse polarity oscillation of the lightning current.

11. The method for building the lightning strike analysis model of the base station tower system according to any one of claims 1 to 5, wherein the optimizing at least one of the coupling electromagnetic field simulation model between the parallel components and the electromagnetic simulation model of the components comprises:

optimizing the coupling electromagnetic field simulation model to obtain optimized coupling electrical parameters, and updating the simulation circuit model and the corresponding lightning stroke experiment verification circuit according to the optimized coupling electrical parameters until the deviation between the lightning stroke analysis simulation result and the lightning stroke analysis test result falls into the deviation range;

or the like, or, alternatively,

preferentially optimizing the coupling electromagnetic field simulation model according to a set optimization strategy so as to obtain optimized coupling electrical parameters, and updating the simulation circuit model and the corresponding lightning stroke experiment verification circuit according to the optimized coupling electrical parameters;

and when the deviation between the lightning stroke analysis simulation result output by the updated simulation circuit model and the lightning stroke analysis test result output by the lightning stroke experiment verification circuit is still not in the set deviation range, optimizing the electromagnetic simulation model.

12. A lightning stroke analysis model building system of a base station tower system is characterized by comprising a model processing device, a simulation result correction circuit and a lightning stroke experiment verification circuit;

the model processing device is used for acquiring the electrical parameters of each part through the electromagnetic simulation model of each part in the base station tower system and the simulation result correction circuit; establishing a coupling electromagnetic field simulation model for each part connected in parallel aiming at the electrical connection relationship, and correcting a circuit according to the coupling electromagnetic field simulation model and a simulation result to obtain coupling electrical parameters among the parts;

the model processing device is also used for establishing a simulation circuit model of the base station tower system according to the electrical connection relationship among the components, the electrical parameters of the components and the coupling electrical parameters of the components, wherein the electrical connection relationship is the coupling electrical parameters among the components connected in parallel; the lightning stroke experiment verification circuit is a circuit for correspondingly realizing the simulation circuit model;

the model processing device is further used for obtaining deviation between a lightning stroke analysis simulation result output by the simulation circuit model and a lightning stroke analysis test result output by the lightning stroke experiment verification circuit, and optimizing at least one of the electromagnetic simulation models of the components and the coupling electromagnetic field simulation model of the components connected in parallel in an electrical connection relationship when the deviation is not within a set deviation range until the deviation between the lightning stroke analysis simulation result and the lightning stroke analysis test result falls into the deviation range.

13. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program, which is executable by a processor to implement the steps of the lightning strike analysis model building method of a base station tower system according to claims 1-11.

Background

Lightning stroke is a high-voltage large-current discharge phenomenon in the nature, relates to multi-field coupling physical effects such as impact force, electromagnetic force, joule heat effect and the like, and poses serious threats to a communication system, light persons influence the communication quality, and heavy persons cause the damage of a communication base station.

With the development and the overall popularization of the 5G technology, the lightning protection of the communication base station facing a complex grounding environment is more and more important. This is because: when the communication base station tower system is struck by lightning, a power supply and base station equipment of the communication base station tower system also need to bear huge lightning current pulse impact, but because the communication base station tower system is complex and diverse in external field installation environment, installation mode and equipment type, the influence of the actual lightning in the communication base station cannot be analyzed in a traversing manner, and great trouble is brought to lightning protection of the communication base station equipment. Therefore, it is very important to accurately analyze the influence of lightning strikes on the tower system of the communication base station to provide theoretical support for lightning protection of the tower system of the communication base station.

Disclosure of Invention

The method, the system and the storage medium for establishing the lightning stroke analysis model of the base station tower system provided by the embodiment of the invention solve the problem of accurately analyzing the influence of lightning stroke on the communication base station tower system so as to provide theoretical support for lightning protection of the communication base station tower system.

In order to solve the technical problem, an embodiment of the present invention provides a method for establishing a lightning strike analysis model of a base station tower system, including:

acquiring 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;

establishing a coupling electromagnetic field simulation model for each component connected in parallel aiming at the electrical connection relationship, and correcting a circuit according to the coupling electromagnetic field simulation model and a simulation result to obtain coupling electrical parameters among the components connected in parallel;

establishing a simulation circuit model of the base station tower system and a lightning stroke experiment verification circuit corresponding to the simulation circuit model according to the electrical connection relation among the components, the electrical parameters of the components and the coupling electrical parameters among the parallel components;

and obtaining the deviation between the lightning stroke analysis simulation result output by the simulation circuit model and the lightning stroke analysis test result output by the lightning stroke experiment verification circuit, and optimizing at least one of the coupling electromagnetic field simulation model between the parallel components and the electromagnetic simulation model of each component according to the deviation when the deviation is not within a set deviation range until the deviation between the lightning stroke analysis simulation result and the lightning stroke analysis test result falls into the deviation range.

In order to solve the technical problem, the embodiment of the invention also provides a lightning stroke analysis model establishing system of the base station tower system, which comprises a model processing device, a simulation result correcting circuit and a lightning stroke experiment verifying circuit;

the model processing device is used for acquiring the electrical parameters of each part through the electromagnetic simulation model of each part in the base station tower system and the simulation result correction circuit; establishing a coupling electromagnetic field simulation model for each part connected in parallel aiming at the electrical connection relationship, and correcting a circuit according to the coupling electromagnetic field simulation model and a simulation result to obtain coupling electrical parameters among the parts;

the model processing device is also used for establishing a simulation circuit model of the base station tower system according to the electrical connection relationship among the components, the electrical parameters of the components and the coupling electrical parameters of the components, wherein the electrical connection relationship is the coupling electrical parameters among the components connected in parallel; the lightning stroke experiment verification circuit is a circuit for correspondingly realizing the simulation circuit model;

the model processing device is further used for obtaining deviation between a lightning stroke analysis simulation result output by the simulation circuit model and a lightning stroke analysis test result output by the lightning stroke experiment verification circuit, and optimizing at least one of the electromagnetic simulation models of the components and the coupling electromagnetic field simulation model of the components connected in parallel in an electrical connection relationship when the deviation is not within a set deviation range until the deviation between the lightning stroke analysis simulation result and the lightning stroke analysis test result falls into the deviation range. .

In order to solve the technical problem, an embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored, where the computer program is executable by a processor to implement the steps of the method for establishing a lightning strike analysis model of a base station tower system as described above.

Advantageous effects

According to the method, the system and the storage medium for establishing the lightning stroke analysis model of the base station tower system, provided by the embodiment of the invention, the electric parameters of each component are obtained through the electromagnetic simulation model of each component in the base station tower system and the corresponding simulation result correction circuit; establishing a coupling electromagnetic field simulation model for each part connected in parallel aiming at the electrical connection relationship, and correcting a circuit according to the coupling electromagnetic field simulation model and a simulation result to obtain coupling electrical parameters among the parts connected in parallel; then establishing a simulation circuit model of the base station tower system and a lightning stroke experiment verification circuit corresponding to the simulation circuit model according to the electrical connection relation among the components, the electrical parameters of the components and the coupling electrical parameters among the parallel components; and when the deviation between the lightning stroke analysis simulation result output by the simulation circuit model and the lightning stroke analysis test result output by the lightning stroke experiment verification circuit is not in the set deviation range, optimizing at least one of the coupling electromagnetic field simulation model between the parallel parts and the electromagnetic simulation model of each part according to the deviation until the deviation between the lightning stroke analysis simulation result and the lightning stroke analysis test result falls into the deviation range, thereby obtaining the simulation circuit model which can accurately analyze the influence of the lightning stroke on the communication base station tower system, providing accurate theoretical support for lightning protection of the communication base station tower system, and avoiding the condition that the high-voltage heavy-current discharge phenomenon generated by the lightning stroke influences the communication quality or causes the communication base station damage as far as possible.

Additional features and corresponding advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

Fig. 1 is a schematic flow chart of a method for establishing a lightning strike analysis model of a base station tower system according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a simulation result correction circuit according to an embodiment of the present invention;

fig. 3 is a schematic flow chart of obtaining an actually measured equivalent self-inductance through a simulation result correction circuit according to a first embodiment of the present invention;

fig. 4 is a schematic flow chart of obtaining the actual measurement equivalent mutual inductance through the simulation result correction circuit according to the first embodiment of the present invention;

FIG. 5 is a schematic diagram of a lightning stroke experiment verification circuit according to a first embodiment of the present invention;

fig. 6 is a schematic structural diagram of a base station tower system according to a second embodiment of the present invention;

fig. 7 is a schematic flow chart of a method for establishing a lightning strike analysis model of a base station tower system according to a second embodiment of the present invention;

fig. 8a is a schematic diagram of a simulation result correction circuit according to a second embodiment of the present invention;

fig. 8b is a schematic circuit diagram of a circuit including only the simulation result correction circuit according to the second embodiment of the present invention;

fig. 8C is a schematic circuit diagram of a simulation result correction circuit including a measured object according to a second embodiment of the present invention;

fig. 9 is a schematic diagram of a lightning stroke experiment verification circuit provided in the second embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention are described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The first embodiment is as follows:

the following detailed description of specific embodiments of the present invention is provided in connection with the accompanying drawings and examples. The embodiment provides a method for establishing a simulation circuit model capable of accurately analyzing the influence of lightning strikes on a communication base station tower system, and the simulation circuit model can provide accurate theoretical support for lightning protection of the communication base station tower system, so that the condition that the high-voltage heavy-current discharge phenomenon generated by the lightning strikes influences the communication quality or damages the communication base station is avoided as much as possible. Referring to fig. 1, the method includes:

s101: and acquiring 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.

In this embodiment, each component in the base station tower system may include each component that the base station tower system may be affected by lightning; of course, according to actual requirements, a part of components of the base station tower system which can be affected by lightning strike or all the components of the base station tower system can be selected. The method can be flexibly selected according to the type and the structure of the base station tower system, the specific site environment and the like. For example, in an application example, the components of the base station tower system in S101 may include, but are not limited to: 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.

In addition, it should be understood that, when the electromagnetic simulation model is established for each component in this embodiment, the specific modeling algorithm and simulation software used may 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.

In this embodiment, at least one of the electrical parameters of each component in the base station tower system may not be simply obtained by using the electromagnetic simulation model of the component, and the electrical parameters output by the electromagnetic simulation model may be tested and corrected by using the corresponding simulation result correction circuit of the electrical parameters, so that the obtained electrical parameters are as accurate as possible, and further the simulation circuit model of the base station tower system proposed based on the obtained electrical parameters is more accurate. And it should be understood that the electrical parameters of each component acquired in this embodiment may include at least one of various electrical parameters that are required for subsequently building a simulation circuit model of the base station tower system. For example, may include, but is not limited to, at least one of an equivalent self-inductance of the components (i.e., an equivalent inductance of the components themselves) and an equivalent resistance. And at least one of the equivalent self-inductance and the equivalent resistance can be tested and corrected by adopting a corresponding simulation result correction circuit according to the requirement.

S102: and establishing a coupling electromagnetic field simulation model for each part connected in parallel aiming at the electrical connection relationship, and correcting the circuit according to the coupling electromagnetic field simulation model and the simulation result to obtain coupling electrical parameters among the parts connected in parallel.

In this embodiment, the electrical connection relationship in the base station tower system is the components connected in parallel, including the components directly connected in parallel by using the wires between the components, or may include the components which are not connected by using the direct wires but indirectly connected in parallel in the electrical connection relationship. The method can be selected according to actual requirements.

It should be understood that the simulation software used for establishing the coupling electromagnetic field simulation model in this embodiment may be the same as the simulation software used for establishing the electromagnetic simulation model of each component, or different simulation software may be selected according to the requirement.

In an embodiment, when the coupling electromagnetic field simulation model is established for each component connected in parallel according to the electrical connection relationship, the coupling electromagnetic field simulation model may be established based on the spatial position relationship between the components connected in parallel and the respective electromagnetic simulation models of the components, and the coupling electrical parameters between the components may be calculated through the coupling electromagnetic field simulation model.

In this embodiment, at least one of the coupling electrical parameters of each part connected in parallel in the base station tower system is not simply obtained by using the electromagnetic simulation model of the component, and the electrical parameters output by the coupling electromagnetic simulation model may also be tested and corrected by using the corresponding simulation result correction circuit of the electrical parameters, so that the obtained coupling electrical parameters are as accurate as possible, and further, the simulation circuit model of the base station tower system proposed based on the obtained coupling electrical parameters is more accurate. And it should be understood that the electrical parameters of the components connected in parallel acquired in this embodiment may include at least one of various coupling electrical parameters that are required for subsequently building a simulation circuit model of the base station tower system. Such as mutual inductance parameters that may include, but are not limited to, mutual inductance coupling interaction of components connected in parallel.

It should be understood that the components connected in parallel in the base station tower system may include only one set, or may include multiple sets, and for each set of components connected in parallel, the coupling electrical parameters between the components connected in parallel in the set may be obtained by the method without being limited to the above method. For example, in the application example, a group of components in which the electrical connection relationships are parallel connections includes: shaft tower, power heart yearn, power cord shielding layer.

S103: and establishing a simulation circuit model of the base station tower system and a lightning stroke experiment verification circuit corresponding to the simulation circuit model according to the electrical connection relation among the components, the electrical parameters of the components and the coupling electrical parameters among the parallel components.

After the electrical parameters of each part and the coupling electrical parameters of the parallel parts are obtained through the two steps, a corresponding simulation circuit model for lightning stroke analysis of the base station tower system can be established according to the electrical connection relation of the parts under the base station tower system, and a corresponding lightning stroke experiment verification circuit for lightning stroke experiment verification can be established. It should be understood that the simulation circuit model and the corresponding lightning stroke experiment verification circuit established in this embodiment may be only a part of circuits correspondingly affected by lightning stroke under the base station tower system, may also be established as a global circuit corresponding to the base station tower system, and may also be flexibly set according to actual requirements.

S104: and obtaining the deviation between the lightning stroke analysis simulation result output by the simulation circuit model and the lightning stroke analysis test result output by the lightning stroke experiment verification circuit, and optimizing at least one of the coupling electromagnetic field simulation model between the parallel components and the electromagnetic simulation model of each component according to the deviation when the deviation is not in the set deviation range until the deviation between the lightning stroke analysis simulation result and the lightning stroke analysis test result falls into the deviation range.

In this embodiment, after the simulation circuit model of the base station tower system is established, the simulation circuit model is not directly used to analyze the influence of lightning strikes on the base station tower system, but a corresponding lightning strike experimental verification circuit is established to further verify the obtained simulation circuit model, and when the accuracy of the obtained simulation circuit model is verified to be insufficient, at least one of the coupling electromagnetic field simulation model and the electromagnetic simulation model of each component is optimized, and the simulation circuit model and the corresponding lightning strike experimental verification circuit are optimized according to the electric parameters and/or the coupling electric parameters obtained after the optimization until the deviation between the lightning strike analysis simulation result and the lightning strike analysis test result falls into a set deviation range (that is, a certain accuracy is achieved).

One of the verification methods is as follows: and inputting the same lightning stroke test parameters aiming at the lightning stroke experiment verification circuit corresponding to the obtained simulation circuit model, then respectively obtaining a lightning stroke analysis simulation result output by the simulation circuit model and a lightning stroke analysis test result output by the lightning stroke experiment verification circuit, and determining whether the optimization is needed according to whether the deviation between the lightning stroke analysis simulation result and the lightning stroke analysis test result falls into a set deviation range.

It should be understood that the deviation range in the present embodiment can be flexibly set according to the specific application requirement, for example, the deviation can be set to 0, and the deviation can also be set within a specific range value according to the requirement.

In this embodiment, when it is determined that the optimization is required, a specific optimization strategy may also be flexibly set, for example: in an optimization example, the difficulty and the accuracy of obtaining coupling electrical parameters among components are considered, the difficulty and the accuracy of obtaining the electrical parameters of each component are higher, and the influence on the accuracy of a simulation circuit model is also higher, so that an optimization strategy can be set, a coupling electromagnetic field simulation model corresponding to each component connected in parallel is optimized preferentially, the optimized coupling electrical parameters are obtained, and the simulation circuit model and a corresponding lightning stroke experimental verification circuit are updated according to the optimized coupling electrical parameters; when the deviation between the lightning stroke analysis simulation result output by the updated simulation circuit model and the lightning stroke analysis test result output by the lightning stroke experiment verification circuit is within a set range, the simulation model of the component is not optimized; on the contrary, when the deviation is not in the set deviation range, the electromagnetic simulation model of at least one component can be considered to be optimized; or continuously optimizing the coupling electromagnetic field simulation model corresponding to each component connected in parallel until the deviation is still not within the set deviation range when the optimization times N reach the set threshold value, and then optimizing the electromagnetic simulation model of at least one component. And it should be understood that, when the electromagnetic simulation model of at least one component is optimized, the electromagnetic simulation models of all components or only a part of the components (such as the components with larger influence) can be optimized selectively, and the optimization can be flexibly set according to requirements.

Of course, in another optimization example, the coupling electromagnetic field simulation model corresponding to each component connected in parallel can be directly optimized; or directly optimizing the coupling electromagnetic field simulation model corresponding to each component and the coupling electromagnetic field simulation model of at least one component which are connected in parallel.

For ease of understanding, the present embodiment is further described below in conjunction with a specific application example.

In the present application example, the obtained electrical parameters of each component include an equivalent self-inductance and an equivalent resistance of each component; correspondingly, acquiring the electrical parameters of each part through the electromagnetic simulation model of each part in the base station tower system and the corresponding simulation result correction circuit can include:

for each part, calculating to obtain the equivalent resistance and the equivalent self-inductance through an electromagnetic simulation model of the part, obtaining the actual measurement equivalent self-inductance of the part through a simulation result correction circuit, and adjusting the electromagnetic simulation model of the part when the inductance deviation between the equivalent self-inductance and the actual measurement equivalent self-inductance is greater than or equal to the set inductance deviation until the inductance deviation between the obtained equivalent self-inductance and the actual measurement equivalent self-inductance is smaller than the set inductance deviation; therefore, the equivalent self-inductance obtained through the electromagnetic simulation model is more accurate. In the present application example, it is considered that the equivalent resistance accuracy of the component obtained by the electromagnetic simulation model is already high, and therefore the equivalent resistance can no longer be corrected by the simulation result correction circuit. Of course, in some application scenarios, the equivalent resistance obtained by the simulation result correction circuit may also be used for correction according to requirements, and the correction principle is the same as above, and is not described herein again.

For example, it is assumed that the components of the base station tower system in the present 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.

Aiming at the lightning rod, an electromagnetic field simulation model of the lightning rod can be established, and a relation rule between equivalent self-inductance of the lightning rod, equivalent resistance, length, material and diameter of the lightning rod and frequency characteristics of lightning current components is obtained; and carrying out experimental verification on a simulation result correction circuit of a corresponding lightning current test platform, analyzing the difference between experimental verification data and a simulation calculation result, and optimizing an electromagnetic field simulation model of the lightning rod, thereby obtaining a mathematical expression between equivalent self-inductance of the lightning rod under the action of characteristic lightning current, equivalent resistance and influence factors thereof.

Aiming at a power core wire of base station equipment, an electromagnetic field simulation model of the power core wire can be established, and a relation rule between equivalent self-inductance of the power core wire, equivalent resistance and length, material and diameter of the power core wire and frequency characteristics of lightning current components is obtained; and carrying out experimental verification on a simulation result correction circuit of a corresponding lightning current test platform, analyzing the difference between experimental verification data and a simulation calculation result, and optimizing an electromagnetic field simulation model of the power supply core wire so as to obtain a mathematical expression between the equivalent self-inductance and the equivalent resistance of the power supply core wire under the action of the characteristic lightning current and the influence factors thereof.

Aiming at a power line shielding layer of base station equipment, an electromagnetic field simulation model of the power line shielding layer can be established, and a relation rule between equivalent self-inductance of the power line shielding layer, equivalent resistance and length, material and diameter of the power line shielding layer and frequency characteristics of lightning current components is obtained; and carrying out experimental verification on a simulation result correction circuit of a corresponding lightning current test platform, analyzing the difference between experimental verification data and a simulation calculation result, and optimizing an electromagnetic field simulation model of the power line shielding layer, thereby obtaining a mathematical expression between the equivalent self-inductance and the equivalent resistance of the power line shielding layer and the influence factors thereof under the action of the characteristic lightning current.

The above similar method can be adopted for obtaining the equivalent self-inductance and the equivalent resistance of other components, and is not described herein again.

In addition, it should be understood that the specific types of the above-mentioned parts in this embodiment can be flexibly set according to the requirements. For example, the tower in this example may include, but is not limited to, a derrick, a delta tower, a quad tower, a single pipe tower, and the like. The power line of the base station device may include, but is not limited to, a coaxial cable, a two-core wire with a shield, a three-core wire, and the like.

For convenience of understanding, the present application example is described with reference to a simulation result correction circuit as an example, and please refer to fig. 2, the simulation result correction circuit includes: a lightning current generating circuit and an electrical connection line electrically connecting the object to be measured and the lightning current generating circuit; referring to fig. 3, the method for obtaining the measured equivalent self-inductance of the component by the simulation result correction circuit includes:

s301: connecting the lightning current generating circuit and the electrical connection circuit into a loop for testing to obtain a no-load equivalent inductance parameter L serving as a reference₁₁I.e. equivalent inductance parameters of the lightning current generating circuit and the electrical connection circuit itself.

S302: keeping the specification and length of the electric connection circuit unchanged, and electrically connecting the component serving as a tested object with the lightning current generation circuit through the electric connection circuit for testing to obtain a load equivalent inductance parameter L₂₁I.e. lightning current generationCircuit + electrical connection line + total equivalent inductance parameter of the component.

S303: equivalent inductance parameter L of load₂₁Equivalent inductance parameter L with no load₁₁The difference is used as the measured equivalent self-inductance of the component.

In the present application example, the coupled electrical parameter includes a mutual inductance parameter of mutual coupling mutual inductance action of the components connected in parallel; correspondingly, obtaining the coupling electrical parameters of each part according to the coupling electromagnetic field simulation model and the simulation result correction circuit comprises the following steps:

according to the space position relation between all the parts connected in parallel and the electromagnetic simulation model, a coupling electromagnetic field simulation model is established, the equivalent mutual inductance between all the parts is calculated through the coupling electromagnetic field simulation model, the actual measurement equivalent mutual inductance between all the parts is obtained through a simulation result correction circuit, and when the inductance deviation between the corresponding equivalent mutual inductance and the actual measurement equivalent mutual inductance is larger than or equal to the set mutual inductance deviation, the coupling electromagnetic field simulation model is adjusted until the inductance deviation between the corresponding equivalent mutual inductance and the actual measurement equivalent mutual inductance is smaller than the set mutual inductance deviation.

The simulation result correction circuit structure adopted here may be the same as the above simulation result correction circuit structure, and also includes a lightning current generation circuit, and an electrical connection line electrically connecting the object to be measured and the lightning current generation circuit; the actual equivalent mutual inductance between each component obtained by the simulation result correction circuit is shown in fig. 4, which includes:

s401: connecting the lightning current generating circuit and the electrical connection circuit into a loop for testing to obtain a no-load equivalent inductance parameter L serving as a reference₁₂(ii) a Namely equivalent inductance parameters of the lightning current generating circuit and the electrical connection circuit itself.

S402: keeping the specification and length of the electric connection circuit unchanged, taking each part connected in parallel as a tested object to be electrically connected with the lightning current generating circuit through the electric connection circuit for testing to obtain a load equivalent inductance parameter L₂₂(ii) a Namely the total equivalent inductance parameter of each component connected in parallel, namely the lightning current generating circuit, the electrical connecting circuit and the lightning current generating circuit.

S403: equivalent inductance parameter L of load₂₂Equivalent inductance parameter L with no load₁₂The difference is used as the actual measurement equivalent total inductance L of each component connected in parallel_all(ii) a I.e. the total equivalent inductance parameter of the components connected in parallel.

S404: according to the actual measurement of the equivalent total inductance L_allAnd calculating the actual measurement equivalent mutual inductance among the components according to the respective equivalent self-inductance of the components connected in parallel.

In this application example, in the course of performing the above correction by using the above simulation result correction circuit, a circuit formed by the lightning current generation circuit and the electrical connection circuit, and a circuit formed by the lightning current generation circuit, the electrical connection circuit, and the object to be measured may be arranged in a rectangular distribution, so that the lightning current generation circuit and the electrical connection circuit have an influence on the equivalent inductance of the object to be measured. In order to further reduce the influence, the size of the rectangle enclosed by the circuit loops in the rectangular distribution can be set, for example, in the circuit loop in the 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 edges in the present application example can be flexibly set according to the specific application scenario. For example, the distance between two parallel sides can be set to be greater than or equal to 1 meter, 1.5 meters, 2 meters or 3 meters, etc.

In this application example, please refer to fig. 5 for a lightning stroke experiment verification circuit, 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, wherein:

the equivalent circuit unit of the base station tower system comprises a lightning rod equivalent circuit unit, a total grounding wire equivalent circuit unit, a tower equivalent circuit unit, a power core wire equivalent circuit unit and a power line shielding layer equivalent circuit unit, wherein the lightning rod equivalent circuit unit and the total grounding wire equivalent circuit unit are connected in series with the waveform forming unit, and the tower equivalent circuit unit, the power core wire equivalent circuit unit and the power line shielding layer equivalent circuit unit are connected in parallel between the lightning rod equivalent circuit unit and the total grounding wire equivalent circuit unit. In this embodiment, a corresponding sensor (e.g., a current or voltage sensor, etc.) may be disposed at a position of the corresponding branch to collect corresponding test information, and the test information collected by the sensor may also be displayed or output through a corresponding display device (e.g., an oscilloscope).

In this application example, obtaining a deviation between a lightning strike analysis simulation result output by the simulation circuit model and a lightning strike analysis test result output by the lightning strike experiment verification circuit includes:

acquiring parameters of actually measured lightning current of at least one component and/or branch combination in a lightning stroke experiment verification circuit and parameters of simulated lightning current of the component and/or branch combination corresponding to a simulation circuit model, and comparing the parameters of the actually measured lightning current with the parameters of the simulated lightning current to obtain deviation between a lightning stroke analysis simulation result output by the simulation circuit model and a lightning stroke analysis test result output by the lightning stroke experiment verification circuit; the parameters of the measured lightning current in the present application example may include, but are not limited to, peak, wave front time, half peak time, and reverse polarity oscillations of the lightning current. Therefore, the influence of lightning strikes on the combination of each branch of the base station tower system can be accurately analyzed subsequently through the simulation circuit model, and protective measures can be correspondingly set in advance, so that negative influence or damage of the lightning strikes on the base station tower system is avoided.

In this application example, the branch combination may include, but is not limited to, a combination of the lightning rod equivalent circuit unit and at least one of the tower equivalent circuit unit, the power core equivalent circuit unit, and the power line shielding layer equivalent circuit unit; for example, the lightning rod equivalent circuit unit + the tower equivalent circuit unit, the lightning rod equivalent circuit unit + the power core equivalent circuit unit, the lightning rod equivalent circuit unit + the power line shielding layer equivalent circuit unit, the lightning rod equivalent circuit unit + the tower equivalent circuit unit + the power core equivalent circuit unit, the lightning rod equivalent circuit unit + the power core equivalent circuit unit + the power line shielding layer equivalent circuit unit, the lightning rod equivalent circuit unit + the tower equivalent circuit unit + the power core equivalent circuit unit + the power line shielding layer equivalent circuit unit, and the like.

Therefore, according to the method for establishing the lightning strike analysis model of the base station tower system, the electrical parameters of each component and the coupling electrical parameters among the components connected in parallel can be obtained through the electromagnetic simulation model and the corresponding simulation result correction circuit; and on the basis, a simulation circuit model of the base station tower system and a corresponding lightning stroke experiment verification circuit are established according to the electrical connection relation among all the parts, at least one of the coupling electromagnetic field simulation model and the electromagnetic simulation model is optimized according to the deviation between the lightning stroke analysis simulation result output by the simulation circuit model and the lightning stroke analysis test result output by the lightning stroke experiment verification circuit until the deviation falls into a set deviation range, so that the simulation circuit model capable of accurately analyzing the influence of lightning strokes on the communication base station tower system is obtained, the distribution condition of lightning stroke current on corresponding branch combination can be predicted and analyzed through the simulation circuit model, and accurate theoretical support is provided for lightning protection of the communication base station tower system.

Example two:

for convenience of understanding, the embodiment is described in conjunction with a specific example of the structure of the base station tower system on the basis of the above embodiment.

Referring to fig. 6, the base station tower system provided in the embodiment mainly includes: lightning rod 61, tower 62, power supply 65, power cord 64 (including power box shielding layer, power core), total ground 66, ground 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.

In the present embodiment, an electromagnetic field simulation model is created by using ANSYS MAXWELL simulation software as an example. Referring to fig. 7, a procedure of building a lightning strike analysis model of a base station tower system in this example includes:

s701: in an ANSYS MAXWELL environment, an electromagnetic field simulation model of a lightning rod, a tower, a power supply core wire of a power supply line, a shielding layer of the power supply line and a grounding wire is established according to the obtained frequency spectrum distribution of the lightning current.

For example, for the lightning rod, an electromagnetic field simulation model of the lightning rod can be established in an ANSYS MAXWELL environment according to parameters such as the length, the material and the diameter of the lightning rod, and a relation rule between the equivalent self-inductance of the lightning rod, the equivalent resistance and the length, the material and the diameter of the lightning rod and the frequency characteristics of lightning current components is obtained. The electromagnetic field simulation model is established in a similar manner for other components, and is not described in detail herein.

S702: relevant structural parameters of each part (such as the length, material, size and other parameters of the input part) and a preset deviation between a simulation result and an actual measurement result of experimental verification are input.

In this example, the equivalent self-inductance and the equivalent resistance of the component (e.g., the lightning rod, the tower, the power line core wire, the power line shielding layer, and the ground wire) may be calculated by an electromagnetic field simulation model of the component, and for the equivalent self-inductance, the equivalent self-inductance may be compared with an actually measured equivalent self-inductance obtained by testing the component by a simulation result correction circuit, and whether the deviation between the two is within a set self-inductance deviation range is determined, and 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.

S703: and (3) carrying out simulation calculation on the equivalent self-inductance and the equivalent resistance of each component (the lightning rod, the tower, the power line shielding layer, the power line core wire and the grounding wire) by using the obtained electromagnetic field simulation model of each component.

S704: and obtaining the equivalent mutual inductance between the tower, the power line shielding layer and the power line source core wire which are connected in parallel in the electrical connection relationship.

In this example, a coupling mutual inductance electromagnetic field simulation model is established for the towers, the power line shielding layers and the power line source core wires which are connected in parallel according to the electrical connection relationship, equivalent mutual inductance among the towers, the power line shielding layers and the power line source core wires is calculated through the coupling mutual inductance electromagnetic field simulation model, actual measurement equivalent mutual inductance among all the parts is obtained through a simulation result correction circuit, and when inductance deviation between corresponding equivalent mutual inductance and the actual measurement equivalent mutual inductance is larger than or equal to set mutual inductance deviation, the coupling mutual inductance electromagnetic field simulation model is adjusted until the inductance deviation between the corresponding equivalent mutual inductance and the actual measurement equivalent mutual inductance is smaller than the set mutual inductance deviation. And then calculating the equivalent mutual inductance among the tower, the power line shielding layer and the power line by using the corrected coupling mutual inductance electromagnetic field simulation model.

S705: the equivalent self-inductance and the equivalent resistance of a lightning rod, a tower, a power line shielding layer, a power line source core wire and a grounding wire in a communication tower system, and a function expression between the equivalent mutual inductance and the structural parameters of mutual inductance coupling among the tower, the power line shielding layer and the power line source core wire and a function expression of equivalent resistance of each component are obtained.

S706: and establishing a simulation circuit model of the base station tower system based on the result and the electric connection relation of all the components under the base station tower system.

In this example, the simulation circuit model may be built in a MATLAB or ATP software environment.

S707: and obtaining a current parameter (namely lightning stroke analysis simulation data) generating a given lightning current waveform value through a simulation circuit model.

S708: establishing a lightning current experiment verification circuit (namely a lightning stroke experiment verification circuit) corresponding to the simulation circuit model, and performing experiment verification, wherein objects of the experiment verification comprise all parts (a lightning rod, a tower, a power line shielding layer, a power line source core wire, a grounding wire and the like) and branch combinations (such as the lightning rod + the tower, the lightning rod + the power line shielding layer, the lightning rod + the power line core wire, the lightning rod + the power line shielding layer + the power line core wire, the lightning rod + the tower + the power line shielding layer + the power line core wire and the like) of a base station tower system.

S709: and analyzing the difference between the experimental verification data and the lightning stroke analysis simulation data, and if the deviation between the experimental verification data and the lightning stroke analysis simulation data is not within the preset deviation range, optimizing the coupling mutual induction electromagnetic field simulation model, or recalculating the coupling mutual induction electromagnetic field simulation model and the electromagnetic simulation model until the deviation between the experimental verification data and the lightning stroke analysis simulation data is within the preset deviation range.

The simulation result correction circuit and the inductance correction process in this example are shown in fig. 8a to 8 c.

Referring to the schematic diagram of the simulation result correction circuit shown in fig. 8a, C is the energy storage capacitor, K is the discharge switch, and L is₁₁As a result of simulationThe self inductance (namely the no-load equivalent inductance parameter serving as the reference) of the correction circuit is measured as the equivalent inductance of the measured object. As shown above, the measured object includes, but is not limited to, components of a base station tower system such as a lightning arrester, a tower, a power line shielding layer, and a power core, and also includes a combination of the tower, the power line shielding layer, and the power core coupled to each other.

See FIG. 8b for a self-inductance L of a circuit including only simulation result correction₁₁The loop of (1) can output the self inductance L only containing the simulation result correction circuit loop shown in FIG. 8a by controlling the discharge voltage on the energy storage capacitor C₁₁Current waveform W of₁₁. According to lightning current waveform W₁₁Waveform period T of₁Parameter and energy storage capacitor C and inductor L₁₁The relationship between:

therefore, the self inductance L of the lightning current simulation result correction circuit can be obtained according to the period T1 and the energy storage capacitor C₁₁. In which, the self-inductance L of the simulation result correction circuit in FIG. 8a₁₁The method comprises the connection inductance inside the lightning generator and all the electric connection inductances between the lightning generator and the tested object. Here, the electrical connection may be a metal bus line, a metal wire, or the like; in order to reduce the influence of the electromagnetic field between the electrical connection lines on the inductance experimental value, the electrical connection lines l₁₁、l₁₂、l₁₃And l₁₄Is in rectangular layout and has electrical connection wires₁₁And l₁₃And l₁₂And l₁₄A certain distance is required between the two, and the two cannot be too close, for example, the distance can be set to be more than or equal to 1 meter, 2 meters or 3 meters, etc. The length of the parts of the electrical connection line or inductance l in FIG. 8b₁₁、l₁₂、l₁₃And l₁₄Can be adjusted according to the length and the size of the object to be measured (including lightning rod, pole tower and other parts).

Referring to fig. 8c, a circuit is modified for simulation result after the tested object (i.e. the test object in the figure) is connected, in order to ensureAccuracy of test results, electrical connection l in FIG. 8c₂₁、l₂₂And l₂₃Sum of l in FIG. 8c₁₁、 l₁₂、l₁₃And l₁₄The sum of the lengths or inductance of the parts should be identical. Similarly, by controlling the discharge voltage on the energy storage capacitor C, the current output waveform W of the simulation result correction circuit including only the object to be measured can be output₂₁. According to lightning current waveform W₂₁Waveform period T2 parameter and energy storage capacitor C and inductor L₂₁The relationship between:

the total inductance L of the simulation result correction circuit including the measured object can be obtained according to the period T2 and the energy storage capacitor C₂₁. From this, it is determined: the inductance of the object to be measured is: l is_Measuring＝L₂₁-L₁₁。

In the verification process, the object to be tested may be a component of a separate communication tower system, such as a lightning rod, a tower, a power line shielding layer and a power core wire, or may be a combination of components. For example, the combination of the components comprises a tower and a power line shielding layer, and the combination of the components exactly simulates two conditions of a high resistance state and a low resistance state of a lightning protection device designed and installed between the power line core wire and the shielding layer of a base station tower system.

Referring to fig. 9, a simulation circuit model of a communication tower system including a lightning rod, a tower, a power line power core, a power line shielding layer, a ground wire, a ground resistor, common mode protection and differential mode protection of a power supply of a base station device is established, and a capacitor C, an inductor L1, a waveform adjusting resistor R and shunt characteristics of lightning current in different branches of the tower, the power line shielding layer and the power line core, which have specific loads (except the lightning rod, the tower, the power line and the like, and may further include a ground connection wire and a ground resistor) and specific electrical parameters of the lightning current component injection lower simulation circuit model, are calculated, wherein the shunt characteristics of each branch may include parameters of the peak value, the wave front time, the half-peak time, the reverse polarity oscillation and the like of the lightning current and a proportional relationship of the shunt of each branch.

The lightning stroke experiment verification circuit shown in fig. 9 includes a high-voltage direct-current charging unit, an energy storage unit and a protection unit which are connected in parallel with the high-voltage direct-current charging unit, and a waveform forming unit and a base station tower system equivalent circuit unit which are connected in series with the high-voltage direct-current charging unit, wherein: the high-voltage direct-current 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 is formed by connecting a resistor R2 and a switch S in series; the discharge control unit is a discharge switch K; the resistor R, the inductor L1 and the capacitor C are waveform forming units, and the specific electrical parameter values of the waveform forming units are obtained through simulation calculation according to the process shown above and are used for generating circuit parameters meeting the requirements of characteristic loads and given current waveforms; the equivalent circuit unit of the base station tower system is characterized by two series branches and a circuit with 3 branches connected in parallel respectively, wherein an L needle and an R needle represent equivalent self inductance and equivalent resistance of the equivalent circuit unit of the lightning rod, an L report and an R report represent inductance and resistance corresponding to the equivalent circuit unit branches of the tower, an L screen and an R screen represent inductance and resistance of the equivalent circuit unit branches of a shielding layer of a power supply line, an L core and an R core represent inductance and resistance of the equivalent circuit unit branches of a core line of the power supply line, and an L ground and an R ground represent inductance and ground resistance of a total ground line respectively. The shunts of a tower equivalent circuit unit branch, a shielding layer equivalent circuit unit branch and a power supply core wire equivalent circuit unit branch in the communication tower system are extracted by a current sensor I, a screen I and a core I and are output to an oscilloscope for measurement; then, data analysis and processing are carried out on the lightning current waveform measured by the oscilloscope, so that parameters such as peak value, wave front time, half-peak time, reverse polarity oscillation and the like of the lightning current of each branch circuit under the given lightning current injection and the proportional relation of the lightning current of each branch circuit can be obtained; and comparing the parameters with parameters, such as peak value, wave front time, half peak time, reversed polarity oscillation and the like, of lightning current of each branch corresponding to the parameters, and the proportional relation of the lightning current of each branch, which are output by the simulation circuit model, analyzing the deviation (namely difference) of the parameters and the proportional relation, and optimizing at least one of the coupling electromagnetic field simulation model and the electromagnetic field simulation model according to the deviation until the deviation falls into a set deviation range when the deviation is not within the preset range, thereby obtaining the simulation circuit model capable of accurately analyzing the influence of lightning stroke on the tower system of the communication base station.

Example three:

the embodiment also provides a lightning stroke analysis model establishing system of the base station tower system, which comprises a model processing device, a simulation result correcting circuit and a lightning stroke experiment verifying circuit;

the model processing device can be various computer equipment and can be used for acquiring the electrical parameters of each part through an electromagnetic simulation model and a simulation result correction circuit of each part in the base station tower system; establishing a coupling electromagnetic field simulation model for each part connected in parallel aiming at the electrical connection relationship, and correcting the circuit according to the coupling electromagnetic field simulation model and the simulation result to obtain coupling electrical parameters among the parts; for a specific process, reference is made to the above embodiments, which are not described herein again.

The model processing device is also used for establishing a simulation circuit model of the base station tower system according to the electrical connection relationship among the components, the electrical parameters of the components and the coupling electrical parameters of the components, wherein the electrical connection relationship is the coupling electrical parameters among the components connected in parallel; the lightning stroke experiment verifies that the circuit is a circuit for correspondingly realizing a simulation circuit model; for a specific process, reference is made to the above embodiments, which are not described herein again.

The model processing device is further used for obtaining deviation between a lightning stroke analysis simulation result output by the simulation circuit model and a lightning stroke analysis test result output by the lightning stroke experiment verification circuit, and optimizing the electromagnetic simulation model of each component and at least one of the coupling electromagnetic field simulation models of the components connected in parallel in an electrical connection relationship when the deviation is not within a set deviation range until the deviation between the lightning stroke analysis simulation result and the lightning stroke analysis test result falls into the deviation range. For a specific process, reference is made to the above embodiments, which are not described herein again.

The embodiment also provides a computer-readable storage medium, which stores a computer program, where the computer program can be executed by a processor to implement the steps executed by the model processing device in the lightning strike analysis model building method for a base station tower system as described above.

The computer-readable storage media in this embodiment include volatile or nonvolatile, removable or non-removable media implemented in any method or technology for storage of information such as computer-readable instructions, data structures, computer program modules or other data. Computer-readable storage media include, but are not limited to, RAM (Random Access Memory), ROM (Read-Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), flash Memory or other Memory technology, CD-ROM (Compact disk Read-Only Memory), Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by a computer.

The embodiment also provides a computer program (or called computer software), which may be distributed on a computer readable medium and executed by a computing device to implement the steps executed by the model processing device in the method for establishing the lightning strike analysis model of the base station tower system; and in some cases at least one of the steps shown or described may be performed in an order different than that described in the embodiments above.

The present embodiments also provide a computer program product comprising a computer readable means on which any of the computer programs as set out above is stored. The computer readable means in this embodiment may include a computer readable storage medium as shown above.

It will be apparent to those skilled in the art that all or some of the steps of the methods, systems, functional modules/units in the devices disclosed above may be implemented as software (which may be implemented in computer program code executable by a computing device), firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed by several physical components in cooperation. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit.

In addition, communication media typically embodies computer readable instructions, data structures, computer program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to one of ordinary skill in the art. Thus, the present invention is not limited to any specific combination of hardware and software.

The foregoing is a more detailed description of embodiments of the present invention, and the present invention is not to be considered limited to such descriptions. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.