Electromagnetic environment simulation method, system and device and storage medium

Abstract

The invention discloses an electromagnetic environment simulation method, system and device and a storage medium, and the simulation method comprises the steps: constructing a high-power microwave excitation source based on a plurality of high-power microwaves with different signal spectrum bandwidths; constructing a high-power microwave transmitting antenna model based on preset physical dimensions, material attributes and performance parameters; based on the high-power microwave transmitting antenna model and the high-power microwave excitation source, constructing a high-power microwave transmitting antenna simulation model; acquiring space structure data and equipment composition data of the power distribution control room, and constructing a power distribution control room simulation model; and based on the high-power microwave transmitting antenna simulation model and the power distribution control room simulation model, performing electromagnetic interference simulation to obtain an electromagnetic interference simulation result. According to the embodiment of the invention, an interference condition result of the power distribution control room facing external strong electromagnetic pulse interference such as high-power microwaves can be effectively obtained, and the method can be widely applied to the field of electromagnetic interference simulation.

Description

Technical Field

[0001] The present invention relates to electromagnetic interference simulation technology, and in particular to an electromagnetic environment simulation method, system, device and storage medium. Background Art

[0002] High-power microwave (HPM) refers to microwave radiation with extremely high power density and energy density, which can produce extremely strong electromagnetic interference and thermal interference to unprotected electronic equipment, break down or burn electronic components, and even cause damage to living targets.

[0003] With the advancement of power and electronic technology, more and more automated control equipment is used in the power distribution control room. The use environment of power or electronic equipment in the control room is complex and easily interfered by the harsh external electromagnetic environment, resulting in problems such as excessive noise of sensitive equipment such as high-sensitivity sensors. The distribution control room contains densely installed strong and weak current equipment, and the signal cables and power cables are densely bundled. When interfered by strong electromagnetic pulses such as high-power microwaves, if the electromagnetic protection design of the electronic equipment and cables in the distribution control room is insufficient, the electronic equipment / system will be easily disturbed or even damaged. Therefore, it is very important to protect the distribution control room from strong external electromagnetic pulse interference such as high-power microwaves.

[0004] However, in the prior art, there is no technical solution that can effectively obtain the interference results of the power distribution control room when facing external strong electromagnetic pulse interference such as high-power microwaves. Summary of the invention

[0005] In view of this, in order to solve one of the above problems, the purpose of an embodiment of the present invention is to provide an electromagnetic environment simulation method, system, device and storage medium, which can effectively obtain the interference results of the distribution control room when facing external strong electromagnetic pulse interference such as high-power microwaves.

[0006] On the one hand, an embodiment of the present invention provides an electromagnetic environment simulation method, comprising the following steps:

[0007] Construct a high-power microwave excitation source based on a variety of high-power microwaves with different signal spectrum bandwidths;

[0008] Construct a high-power microwave transmitting antenna model based on preset physical dimensions, material properties and performance parameters;

[0009] Based on the high-power microwave transmitting antenna model and the high-power microwave excitation source, construct a high-power microwave transmitting antenna simulation model;

[0010] Acquire spatial structure data and equipment composition data of the power distribution control room, and construct a simulation model of the power distribution control room; the simulation model of the power distribution control room includes a spatial structure model and an equipment composition model;

[0011] Based on the high-power microwave transmitting antenna simulation model and the power distribution control room simulation model, electromagnetic interference simulation is performed to obtain electromagnetic interference simulation results.

[0012] The present invention constructs a high-power microwave excitation source and a high-power microwave transmitting antenna model by preset conditions, and constructs a high-power microwave transmitting antenna simulation model according to the excitation source and the high-power microwave transmitting antenna model; further, by constructing a distribution control room simulation model, an electromagnetic interference simulation result of the electromagnetic interference situation of the distribution control room when it is subjected to a strong electromagnetic pulse is finally obtained. The present invention uses electromagnetic interference simulation technology to construct relevant models and perform electromagnetic interference simulation, and can effectively obtain the interference situation results of the distribution control room when it faces external strong electromagnetic pulse interference such as high-power microwaves.

[0013] Optionally, the device composition data includes cabinet modeling data; the device composition model includes a cabinet simulation model; and the cabinet simulation model is constructed by the following method:

[0014] Based on the cabinet modeling data, determine the cabinet structure model, internal cable modeling process and PCB modeling loop;

[0015] The cabinet simulation model is constructed based on the cabinet structure model, the internal cable modeling process, the PCB modeling loop and the cabinet preset material properties.

[0016] Optionally, the power distribution control room model includes cable modeling data; the equipment composition model includes a cable simulation model; and the cable simulation model is constructed by the following method:

[0017] Set the cable bundling method based on the preset cable port node coordinates and the preset curve function;

[0018] Calculating a cable geometric model based on the cable modeling data and the cable bundling method;

[0019] Based on the cable geometric model, the cable simulation model is constructed.

[0020] Optionally, the simulation method further includes:

[0021] If the electromagnetic interference simulation result of the power distribution control room simulation model does not meet the preset conditions, adjust the power distribution control room simulation model; the adjustment method includes adjusting the shielding performance of the equipment in the power distribution control room simulation model, adjusting the cable design in the power distribution control room simulation model, and adjusting the protection circuit design in the power distribution control room simulation model;

[0022] Electromagnetic interference simulation is performed again based on the adjusted power distribution control room simulation model and the high-power microwave transmitting antenna simulation model until the electromagnetic interference simulation result meets the preset condition.

[0023] Optionally, adjusting the shielding performance of equipment in the power distribution control room simulation model includes:

[0024] Adjusting material parameters for electromagnetic shielding in the power distribution control room simulation model;

[0025] and / or, adjusting the equipment structure for electromagnetic shielding in the power distribution control room simulation model;

[0026] And / or, adjusting the splicing method of the electromagnetic shielding structure in the power distribution control room simulation model.

[0027] Optionally, adjusting the cable design in the power distribution control room simulation model includes:

[0028] Adjusting the wiring mode of cables in the power distribution control room simulation model;

[0029] And / or, adjusting the shielding treatment method of the cables in the power distribution control room simulation model.

[0030] Optionally, the adjusting the protection circuit design in the power distribution control room simulation model includes:

[0031] Adjusting the number of filters of the protection circuit in the power distribution control room simulation model;

[0032] and / or, adjusting the number of filtering protection circuits in the power distribution control room simulation model;

[0033] And / or, adjusting the number of wave protection devices within the power distribution control room simulation model.

[0034] On the other hand, the present invention also provides an electromagnetic environment simulation system, comprising:

[0035] The first module is used to construct a high-power microwave excitation source based on a variety of high-power microwaves with different signal spectrum bandwidths;

[0036] The second module is used to build a high-power microwave transmitting antenna model based on preset physical dimensions, material properties and performance parameters;

[0037] The third module is used to construct a high-power microwave transmitting antenna simulation model based on the high-power microwave transmitting antenna model and the high-power microwave excitation source;

[0038] The fourth module is used to obtain the spatial structure data and equipment composition data of the power distribution control room and construct a simulation model of the power distribution control room; the simulation model of the power distribution control room includes a spatial structure model and an equipment composition model;

[0039] The fifth module is used to perform electromagnetic interference simulation based on the high-power microwave transmitting antenna simulation model and the power distribution control room simulation model to obtain electromagnetic interference simulation results.

[0040] On the other hand, the present invention also provides an electromagnetic environment simulation device, comprising:

[0041] at least one processor;

[0042] at least one memory for storing at least one program;

[0043] When the at least one program is executed by the at least one processor, the at least one processor implements the method as described above.

[0044] On the other hand, the present invention further provides a computer-readable storage medium storing a program executable by a processor, wherein the program executable by the processor is used to execute the method as described above when executed by the processor.

[0045] In summary, the beneficial effects that can be achieved by the embodiments of the present invention include:

[0046] The present invention provides an electromagnetic environment simulation method, system, device and storage medium. The method constructs a high-power microwave excitation source and a high-power microwave transmitting antenna model by preset conditions, and constructs a high-power microwave transmitting antenna simulation model according to the excitation source and the high-power microwave transmitting antenna model; further, by constructing a distribution control room simulation model, an electromagnetic interference simulation result of the electromagnetic interference situation of the distribution control room when it is subjected to a strong electromagnetic pulse is finally obtained, and the distribution control room simulation model can be adjusted through the electromagnetic interference simulation effect to optimize its electromagnetic environment protection design. The present invention can effectively obtain the interference situation results of the distribution control room when it faces external strong electromagnetic pulse interference such as high-power microwaves by utilizing electromagnetic interference simulation technology, constructing relevant models and performing electromagnetic interference simulation, and further optimize the electromagnetic environment protection design of the distribution control room through the electromagnetic interference simulation results. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a schematic diagram of the steps of an electromagnetic environment simulation method provided by an embodiment of the present invention;

[0048] Figure 2 It is a flowchart of an electromagnetic environment simulation method provided by an embodiment of the present invention;

[0049] Figure 3 It is a schematic diagram of a situation of a high-power microwave excitation composition provided by an embodiment of the present invention;

[0050] Figure 4 is a schematic diagram of another situation of the high-power microwave excitation composition provided by an embodiment of the present invention;

[0051] Figure 5 It is a schematic diagram of a modeling situation of the physical dimensions of the power distribution control room model provided by an embodiment of the present invention;

[0052] Figure 6 It is a schematic diagram of a modeling situation of the spatial structure of the power distribution control room model provided by an embodiment of the present invention;

[0053] Figure 7a It is a flow chart of a modeling method of a cabinet simulation model provided by an embodiment of the present invention;

[0054] Figure 7b is a structural schematic diagram of a cabinet simulation model provided by an embodiment of the present invention;

[0055] Figure 8a It is a flow chart of a modeling method of a cable simulation model provided by an embodiment of the present invention;

[0056] Figure 8b is a structural schematic diagram of a case of a cable simulation model provided by an embodiment of the present invention;

[0057] Figure 8c is a structural schematic diagram of another situation of the cable simulation model provided by an embodiment of the present invention;

[0058] Fig. 9 It is a flow chart of a method for optimizing electromagnetic protection design of a power distribution control room provided by an embodiment of the present invention;

[0059] Fig.10 is a structural block diagram of an electromagnetic environment simulation system provided by an embodiment of the present invention;

[0060] Fig.11 It is a structural block diagram of an electromagnetic environment simulation device provided by an embodiment of the present invention;

[0061] Among them, a-distribution room, b-frequency conversion cabinet, c-ground, d-control cabinet, e-cable trough, f-connection to front equipment (power / control / sensor), g-control room. DETAILED DESCRIPTION

[0062] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The step numbers in the following embodiments are only provided for the convenience of explanation and description, and the order between the steps is not limited in any way. The execution order of each step in the embodiment can be adaptively adjusted according to the understanding of those skilled in the art.

[0063] Several terms involved in this application are explained as follows:

[0064] Strong electromagnetic pulse (EMP): It is a sudden, high-intensity broadband electromagnetic radiation pulse. It can be generated by a variety of methods such as nuclear explosions and high-power radiation sources, and has extremely strong destructive power. Strong electromagnetic pulses usually last for a short time, but their energy is huge. They can be coupled into electronic systems through holes, cables, antennas, etc., generating transient induced voltages and currents, causing interference or permanent damage to electronic equipment. Because of its strong electromagnetic aggressiveness, the protection against strong electromagnetic pulses has become increasingly important, and corresponding measures need to be taken to protect critical infrastructure and electronic equipment from its impact.

[0065] High-power microwave (HPM): It is a high-energy electromagnetic pulse emitted by a high-power microwave system composed of a power source and a microwave source. It is a type of strong electromagnetic pulse. The power density and energy density of HPM are quite high, which can produce electrical and thermal effects on unprotected electronic equipment, break down or burn electronic components, and even cause damage to living targets.

[0066] Electromagnetic interference simulation: A method that uses computer technology and electromagnetic field theory to simulate and predict the interference of electronic equipment or systems in different electromagnetic environments. Through simulation, the propagation, coupling and interaction of electromagnetic waves can be analyzed, the electromagnetic compatibility of equipment can be evaluated, potential interference problems can be discovered, and a scientific basis can be provided for design optimization, fault diagnosis and electromagnetic protection. It has important application value in the fields of electronic engineering, communications, aerospace, etc.

[0067] PCB (Printed Circuit Board): Printed circuit board is an indispensable basic component in electronic devices. It uses copper foil etching technology to form conductive lines on an insulating substrate to connect electronic components and achieve circuit integration. PCB has the advantages of small size, light weight, and high reliability. It is widely used in computers, communications, consumer electronics and other fields. It is one of the key technologies in the manufacture of modern electronic products and has greatly promoted the development of the electronics industry.

[0068] Electromagnetic protection design optimization: Through in-depth analysis of electromagnetic field distribution, interference source characteristics and transmission paths, the electronic system is improved and perfected using shielding, filtering, grounding and other technical means to reduce the impact of external electromagnetic interference on system performance, while reducing the system's own electromagnetic radiation and improving overall electromagnetic compatibility.

[0069] VBA (Visual Basic for Applications) is a programming language widely used in applications. It is based on Visual Basic and allows users to write macros and automation scripts to improve work efficiency. From simple data entry to complex data analysis, everything can be achieved by writing VBA code. It is easy to learn and powerful, and is an important tool for users to improve work efficiency.

[0070] CST software: A high-performance 3D electromagnetic simulation software package, widely used in communications, aerospace, automotive and other fields. It can simulate and analyze the behavior of electromagnetic fields, including antenna design, electromagnetic compatibility analysis, multi-physics field coupling simulation, etc., providing accurate and reliable simulation results to help engineers optimize product design and improve product performance.

[0071] CSTCreat3DCable: is a powerful function in CST software, which can quickly generate high-precision 3D cable models according to the specifications and parameters of the cable. This function not only simplifies the complexity of cable modeling, but also improves simulation efficiency, allowing engineers to more accurately evaluate and optimize the performance of cables in electromagnetic fields and ensure the electromagnetic compatibility of electronic systems.

[0072] TVS tube: full name Transient Voltage Suppressor, also known as transient voltage suppression diode, is a high-performance protection device developed on the basis of voltage regulator technology. When the two poles of the TVS tube are subjected to a reverse transient high-energy impact, it can suddenly reduce its impedance at a very high speed (picosecond level), while absorbing a large current and clamping the voltage between the two poles to a predetermined value, thereby effectively protecting the precision components in the electronic circuit from damage by surge pulses.

[0073] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides an electromagnetic environment simulation method, which includes the following steps and processes:

[0074] S100: Construct a high-power microwave excitation source based on multiple high-power microwaves with different signal spectrum bandwidths;

[0075] By defining the function, initial parameter value and parameter range of high-power microwaves, a variety of high-power microwaves with different signal spectrum bandwidths are calculated, and simulation software (such as CST software) is used to simulate and obtain a variety of simulated high-power microwaves for constructing high-power microwave excitation sources.

[0076] Optionally, the high-power microwaves constructed by the high-power microwave excitation source of the present invention include narrowband high-power microwaves and broadband high-power microwaves. In the present invention, the signal spectrum bandwidth percentage (pbw) less than 1% is defined as narrowband high-power microwaves NB-HPM, and greater than 1% is defined as broadband high-power microwaves WB-HPM. The introduction of NB-HPM and WB-HPM in the present invention is as follows:

[0077] (1) Narrowband HPM

[0078] In the present invention, a high-frequency modulated pulse E(t) is used to describe the narrowband HPM, and the formula is:

[0079]

[0080] E(t)=E0sin(2πf0t),t1<t<t1+τ

[0081]

[0082] Where: t1 is the pulse rising front (fall time); τ is the pulse width; t is the pulse excitation time; E0 is the peak field intensity, and f0 is the center frequency.

[0083] (2) Broadband HPM

[0084] The broadband HPM electric field in the present invention can be described as a decaying sine wave E(t), expressed as:

[0085]

[0086] Where: E0 is the peak field intensity; f0 is the center frequency, Q is the damping factor, and t is the pulse excitation time.

[0087] like Figure 3 and Figure 4 As shown, two waveforms are obtained by defining high-power microwaves using VBA language in CST simulation software.

[0088] S200: Build a high-power microwave transmitting antenna model based on preset physical dimensions, material properties and performance parameters;

[0089] By acquiring modeling data such as the physical dimensions, material properties, and performance parameters of the physical transmitting antenna, and then importing the acquired modeling data into the simulation software, a high-power microwave transmitting antenna model is constructed. The constructed high-power microwave transmitting antenna model is the transmitting device in the electromagnetic interference simulation of the present invention.

[0090] S300: Based on the high-power microwave transmitting antenna model and high-power microwave excitation source, a high-power microwave transmitting antenna simulation model is constructed;

[0091] By constructing a high-power microwave transmitting antenna model, high-power microwave transmitting antenna parameters are obtained, and combined with a high-power microwave excitation source model as an electromagnetic interference simulation emission source of the present invention, a high-power microwave transmitting antenna simulation model is constructed.

[0092] S400: Acquire spatial structure data and equipment composition data of the power distribution control room, and build a simulation model of the power distribution control room;

[0093] like Figure 5 and Figure 6 As shown, by conducting on-site physical measurements of the distribution control room, the physical space structure of the distribution control room and the composition of the equipment in the distribution control room (including frequency conversion cabinets / control cabinets, power cables / signal cables and other sensitive equipment, etc.) are obtained, and the relevant data are imported into the simulation software to calculate the simulation model of the distribution control room.

[0094] Specifically, the power distribution control room simulation model includes a space structure model and an equipment composition model.

[0095] Specifically, the equipment composition model in the power distribution control room simulation model includes a cabinet simulation model, a cable simulation model and a sensitive equipment simulation model.

[0096] In some embodiments, the process of constructing the power distribution control room simulation model in step S400 includes constructing a cabinet simulation model, a cable simulation model, and a sensitive device simulation model, and combining the constructed simulation models to obtain a construction result of the power distribution control room simulation model.

[0097] like Figure 7a As shown in the figure, the construction process of the cabinet simulation model specifically includes:

[0098] S411: Based on the cabinet modeling data, determine the cabinet structure model (mainly the hole and seam simplified model), the internal cable modeling process and the PCB modeling loop;

[0099] The equipment composition data of the power distribution control room obtained includes the modeling data of the cabinet simulation model. Through the modeling data of the cabinet simulation model, data on shell modeling, the situation of the interconnection cables inside the cabinet, and the PCB data of the cabinet can be obtained. Through the relevant data, it is achieved: modeling the cabinet shell, setting the cabinet hole and seam simplified model, and determining the cabinet structure model; modeling the interconnection cables inside the cabinet, referring to the cable modeling process, and determining the internal cable modeling process; importing the obtained PCB data, calculating the advance main power circuit and sensitive circuit, and determining the PCB modeling circuit.

[0100] Specifically, the data related to shell modeling includes the following:

[0101] Hole seam types: butt seam, lap seam, dovetail groove, etc.

[0102] Hole shape: round hole, square hole, hexagonal hole, etc.

[0103] Physical dimensions of holes and slits: slit length, hole diameter, number of holes, etc.

[0104] Specifically, PCB data includes SPICE models of power devices (IGBT, etc.), IBIS models of IC chips, and SPICE models or TOUCHSTONE models of components such as capacitors and inductors.

[0105] S412: Construct a cabinet simulation model based on the cabinet structure model, the internal cable modeling process, the PCB modeling loop, and the cabinet preset material properties.

[0106] According to the obtained cabinet structure model, internal cable modeling process, and PCB modeling loop, the system is assembled to build a complete cabinet model. Furthermore, the material properties of the model are set, and meshing is performed according to the constructed complete cabinet model and the material properties of the model, and the cabinet simulation model is obtained through simulation calculation.

[0107] like Figure 7b 1 is a schematic diagram of the structure of a cabinet simulation model obtained by simulation calculation in the present invention.

[0108] like Figure 8a As shown in the figure, the construction process of the cable simulation model specifically includes:

[0109] S421: Setting a cable bundling method based on preset cable port node coordinates and a preset curve function;

[0110] Through node modeling, the node coordinates of the cable port in cable modeling are set; through curve modeling, the curve parameters of cable modeling are set. According to the set cable port node coordinates and curve parameters, the cable bundle is set and the cable path is formed, and the cable bundling method is calculated.

[0111] S422: Calculate and obtain a cable geometric model based on the cable modeling data and the cable bundling method;

[0112] The cable modeling data includes material properties and physical properties of the cables; cables are added according to the cable bundling method, and the material properties and physical properties of the cables are set based on the cable modeling data to form a cable geometric model.

[0113] Specifically, the cable material properties include insulation layer material, shielding layer material and core material.

[0114] Specifically, the physical properties of the cable include electrical parameters, wire core thickness, shielding layer thickness, insulation layer thickness, shielding layer braiding angle of the shielded wire, and the number of twisted pairs of the twisted pair wire.

[0115] S423: Construct a cable simulation model based on the cable geometry model.

[0116] The obtained cable geometric model is modeled through the modeling function in the simulation software (such as CSTCreat3DCable), the cable three-dimensional model is generated, and the cable simulation model is constructed.

[0117] Optionally, the embodiment of the present invention uses CST simulation software Cable Studio for modeling and simulation. It can model different types of cables such as power cables and signal cables; the cable simulation model obtained by modeling can include Figure 8b and Figure 8c Cable cross-section shown.

[0118] S500: Based on the high-power microwave transmitting antenna simulation model and the power distribution control room simulation model, electromagnetic interference simulation is performed to obtain electromagnetic interference simulation results.

[0119] According to the power distribution control room simulation model and the high-power microwave transmitting antenna simulation model, the electromagnetic interference simulation parameters of the present invention are set, and simulation prediction is performed to obtain the electromagnetic interference simulation prediction results. The results of the electromagnetic interference simulation of the present invention may include: the electric field distribution inside the power distribution control room, the electric field distribution on the PCB boards of equipment such as the frequency conversion cabinet and the control cabinet, the voltage / current information coupled by the main power circuit, and the voltage / current information coupled on the power cable and the signal cable.

[0120] Optionally, after obtaining the electromagnetic interference simulation results, the present invention can analyze the results; if the electric field / voltage / current values ​​in the results exceed a preset threshold, the electromagnetic protection design of the distribution control room simulation model is optimized.

[0121] Optionally, methods for optimizing the electromagnetic protection design of the power distribution control room simulation model may include optimizing shell shielding effectiveness, optimizing interconnect cable shielding methods, optimizing electronic equipment filtering protection circuits, etc.

[0122] In some embodiments, the electromagnetic protection design optimization process of the power distribution control room simulation model according to the embodiment of the present invention can be performed by Fig. 9 The process of optimizing the electromagnetic protection design method of the power distribution control room is implemented as shown; the method for optimizing the electromagnetic protection design method of the power distribution control room may include the following steps:

[0123] S600: If the electromagnetic interference simulation result of the power distribution control room simulation model does not meet the preset conditions, adjust the power distribution control room simulation model; the adjustment method includes adjusting the shielding performance of the equipment in the power distribution control room simulation model, adjusting the cable design in the power distribution control room simulation model, and adjusting the protection circuit design in the power distribution control room simulation model;

[0124] Optionally, the method of adjusting the shielding performance of equipment in the power distribution control room simulation model may include:

[0125] Adjust the material parameters used for electromagnetic shielding in the power distribution control room model;

[0126] In the present invention, metal is mainly used as the shielding material in the power distribution control room simulation model, and metal materials with higher electrical conductivity can be selected as the shielding material to adjust the shielding performance of the equipment in the power distribution control room simulation model.

[0127] and / or, adjusting the structure of equipment used for electromagnetic shielding within the power distribution control room simulation model;

[0128] In the present invention, the device structure used for electromagnetic shielding is mainly apertures, and the apertures can be designed and optimized, such as by using conductive pads, waveguide windows, etc., to adjust the shielding performance of the equipment in the simulation model of the power distribution control room.

[0129] And / or, adjusting the splicing method of the electromagnetic shielding structure within the power distribution control room simulation model.

[0130] In the present invention, the splicing method of the electromagnetic shielding structure in the power distribution control room simulation model can be optimized and the shielding performance of the equipment in the power distribution control room simulation model can be adjusted by conducting anti-oxidation treatment on the cabinet shell overlap surface.

[0131] Optionally, the manner of adjusting the cable design in the power distribution control room simulation model may include:

[0132] Adjust the wiring method of cables in the power distribution control room simulation model;

[0133] In the present invention, the wiring method of cables in the power distribution control room simulation model can be optimized and the cable design in the power distribution control room simulation model can be adjusted by keeping interconnecting cables such as power lines and signal lines away from doors and windows, or deepening their cable troughs.

[0134] And / or, adjust the shielding treatment of cables in the power distribution control room simulation model.

[0135] In the present invention, the cable design in the power distribution control room simulation model can be adjusted by performing shielding optimization processing on the cable harness so that its braiding density is greater than 80%.

[0136] Optionally, the method of adjusting the protection circuit design in the power distribution control room simulation model may include:

[0137] Adjust the number of filters in the protection circuit in the power distribution control room simulation model;

[0138] In the present invention, the protection circuit design in the power distribution control room simulation model can be adjusted by increasing the number of filters at positions such as power line ports and signal line ports.

[0139] and / or, adjusting the number of filter protection circuits within the power distribution control room simulation model;

[0140] In the present invention, the number of filtering protection circuits at positions such as capacitors, inductors, and TVS tube protection can be increased according to the schematic diagram, and the protection circuit design in the simulation model of the power distribution control room can be adjusted.

[0141] And / or, adjust the number of filtering protection components in the power distribution simulation room model.

[0142] In the present invention, a shielding cover can be added to the sensitive chip or a filtering protection device can be added to the input pin, the PCB design can be optimized, and the protection circuit design in the simulation model of the power distribution control room can be adjusted.

[0143] S700: Perform electromagnetic interference simulation again based on the adjusted power distribution control room simulation model and the high power microwave transmitting antenna simulation model until the electromagnetic interference simulation result meets the preset conditions.

[0144] The simulation configuration is re-performed according to the optimized distribution control room simulation model, and then the electromagnetic interference simulation is performed again with the high-power microwave transmitting antenna simulation model to obtain the results and their corresponding parameters for judgment. Until the corresponding parameters do not exceed the preset threshold, the high-power microwave protection performance of the distribution control room is judged to be excellent, thereby realizing the optimization of the electromagnetic protection design of the distribution control room simulation model.

[0145] The implementation of the embodiments of the present invention includes the following beneficial effects:

[0146] The embodiment of the present invention proposes a method for simulating and modeling the electromagnetic environment of a distribution control room under high-power microwaves, models the distribution control room and internal electronic equipment and cables, and constructs a high-power microwave interference source and antenna model. The distribution control room is irradiated with high-power microwaves for simulation analysis, and the voltage and current information coupled on the internal electronic equipment and cables and the electric field distribution in the distribution control room are studied. Simulation comparison and analysis are performed by adding protective measures (such as cable shielding, adding filtering protection devices to electronic equipment, etc.), so as to provide certain optimization suggestions for the protection of the distribution control room against high-power microwaves.

[0147] like Fig.10 As shown, an embodiment of the present invention further provides an electromagnetic environment simulation system, comprising:

[0148] The first module is used to construct a high-power microwave excitation source based on a variety of high-power microwaves with different signal spectrum bandwidths;

[0149] The second module is used to build a high-power microwave transmitting antenna model based on preset physical dimensions, material properties and performance parameters;

[0150] The third module is used to construct a high-power microwave transmitting antenna simulation model based on the high-power microwave transmitting antenna model and the high-power microwave excitation source;

[0151] The fourth module is used to obtain the spatial structure data and equipment composition data of the power distribution control room and construct a simulation model of the power distribution control room; the simulation model of the power distribution control room includes a spatial structure model and an equipment composition model;

[0152] The fifth module is used to perform electromagnetic interference simulation based on the high-power microwave transmitting antenna simulation model and the distribution control room simulation model to obtain electromagnetic interference simulation results.

[0153] It can be seen that the contents of the above method embodiments are all applicable to the present system embodiments, the functions specifically implemented by the present system embodiments are the same as those of the above method embodiments, and the beneficial effects achieved are also the same as those achieved by the above method embodiments.

[0154] like Fig.11 As shown, an embodiment of the present invention further provides an electromagnetic environment simulation device, comprising:

[0155] at least one processor;

[0156] at least one memory for storing at least one program;

[0157] When at least one program is executed by at least one processor, the at least one processor implements the steps of the electromagnetic environment simulation method of the above method embodiment.

[0158] Among them, the memory, as a non-transient computer-readable storage medium, can be used to store non-transient software programs and non-transient computer executable programs. The memory may include a high-speed random access memory, and may also include a non-transient memory, such as at least one disk storage device, a flash memory device, or other non-transient solid-state storage device. In some embodiments, the memory may optionally include a remote memory remotely arranged relative to the processor, and these remote memories may be connected to the processor via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0159] It can be seen that the contents of the above method embodiments are all applicable to the present device embodiments, the functions specifically implemented by the present device embodiments are the same as those of the above method embodiments, and the beneficial effects achieved are also the same as those achieved by the above method embodiments.

[0160] In addition, the embodiment of the present application also discloses a computer program product or a computer program, which is stored in a computer-readable storage medium. The processor of the computer device can read the computer program from the computer-readable storage medium, and the processor executes the computer program, so that the computer device performs the above method.

[0161] The embodiment of the present invention further provides a computer-readable storage medium, which stores a program executable by a processor, and the program executable by the processor is used to implement the above method when executed by the processor. Similarly, the contents of the above method embodiment are all applicable to the present storage medium embodiment, and the functions specifically implemented by the present storage medium embodiment are the same as those of the above method embodiment, and the beneficial effects achieved are also the same as those achieved by the above method embodiment.

[0162] It is understood that all or some steps and systems in the disclosed method above can be implemented as software, firmware, hardware and appropriate combinations thereof. Some physical components 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. Such software can be distributed on a computer-readable medium, and the computer-readable medium can include a computer storage medium (or a non-transitory medium) and a communication medium (or a temporary medium). As known to those of ordinary skill in the art, the term computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules or other data). Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic cassette, magnetic tape, disk storage or other magnetic storage device, or any other medium that can be used to store desired information and can be accessed by a computer. Furthermore, it is well known to those skilled in the art that communication media typically embodies computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media.

[0163] The above is a specific description of the preferred implementation of the present invention, but the invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A method for simulating an electromagnetic environment, characterized in that: include: Construct a high-power microwave excitation source based on a variety of high-power microwaves with different signal spectrum bandwidths; Construct a high-power microwave transmitting antenna model based on preset physical dimensions, material properties and performance parameters; Based on the high-power microwave transmitting antenna model and the high-power microwave excitation source, construct a high-power microwave transmitting antenna simulation model; Acquire spatial structure data and equipment composition data of the power distribution control room, and construct a simulation model of the power distribution control room; the simulation model of the power distribution control room includes a spatial structure model and an equipment composition model; Based on the high-power microwave transmitting antenna simulation model and the power distribution control room simulation model, electromagnetic interference simulation is performed to obtain electromagnetic interference simulation results.

2. The simulation method according to claim 1, characterized in that: The equipment composition data includes cabinet modeling data; the equipment composition model includes a cabinet simulation model; the cabinet simulation model is constructed by the following method: Based on the cabinet modeling data, determine the cabinet structure model, internal cable modeling process and PCB modeling loop; The cabinet simulation model is constructed based on the cabinet structure model, the internal cable modeling process, the PCB modeling loop and the cabinet preset material properties.

3. The simulation method according to claim 1, characterized in that: The power distribution control room model includes cable modeling data; the equipment composition model includes a cable simulation model; the cable simulation model is constructed by the following method: Set the cable bundling method based on the preset cable port node coordinates and the preset curve function; Calculating a cable geometric model based on the cable modeling data and the cable bundling method; Based on the cable geometric model, the cable simulation model is constructed.

4. The simulation method according to claim 1, characterized in that: The simulation method further comprises: If the electromagnetic interference simulation result of the power distribution control room simulation model does not meet the preset conditions, adjust the power distribution control room simulation model; the adjustment method includes adjusting the shielding performance of the equipment in the power distribution control room simulation model, adjusting the cable design in the power distribution control room simulation model, and adjusting the protection circuit design in the power distribution control room simulation model. Electromagnetic interference simulation is performed again based on the adjusted power distribution control room simulation model and the high-power microwave transmitting antenna simulation model until the electromagnetic interference simulation result meets the preset condition.

5. The simulation method according to claim 4, characterized in that: The step of adjusting the shielding performance of equipment in the power distribution control room simulation model includes: Adjusting material parameters for electromagnetic shielding in the power distribution control room model; and / or, adjusting the equipment structure for electromagnetic shielding in the power distribution control room simulation model; And / or, adjusting the splicing method of the electromagnetic shielding structure in the power distribution control room simulation model.

6. The simulation method according to claim 4, characterized in that: The adjusting the cable design in the power distribution control room simulation model includes: Adjusting the wiring mode of cables in the power distribution control room simulation model; And / or, adjusting the shielding treatment method of the cables in the power distribution control room simulation model.

7. The simulation method according to claim 4, characterized in that: The adjusting the protection circuit design in the power distribution control room simulation model includes: Adjusting the number of filters of the protection circuit in the power distribution control room simulation model; and / or, adjusting the number of filtering protection circuits in the power distribution control room simulation model; And / or, adjusting the number of filtering protection components in the power distribution control room simulation model.

8. An electromagnetic environment simulation system, characterized in that: include: The first module is used to construct a high-power microwave excitation source based on a variety of high-power microwaves with different signal spectrum bandwidths; The second module is used to build a high-power microwave transmitting antenna model based on preset physical dimensions, material properties and performance parameters; The third module is used to construct a high-power microwave transmitting antenna simulation model based on the high-power microwave transmitting antenna model and the high-power microwave excitation source; The fourth module is used to obtain the spatial structure data and equipment composition data of the power distribution control room and construct a simulation model of the power distribution control room; the simulation model of the power distribution control room includes a spatial structure model and an equipment composition model; The fifth module is used to perform electromagnetic interference simulation based on the high-power microwave transmitting antenna simulation model and the power distribution control room simulation model to obtain electromagnetic interference simulation results.

9. An electromagnetic environment simulation device, characterized in that: include: at least one processor; at least one memory for storing at least one program; When the at least one program is executed by the at least one processor, the at least one processor implements the method according to any one of claims 1 to 7.

10. A computer-readable storage medium storing a program executable by a processor, characterized in that: The processor-executable program is used to perform the method according to any one of claims 1 to 7 when executed by the processor.

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