High-voltage circuit breaker simulation method, device, computer equipment and readable storage medium

Abstract

This application relates to a high-voltage circuit breaker simulation method, apparatus, computer equipment, and readable storage medium, belonging to the field of high-voltage circuit breaker simulation technology. The method includes: simulating the opening and closing coils, transmission mechanism, arc-extinguishing chamber, and near-zone circuit of the high-voltage circuit breaker during the breaking process according to a pre-constructed four-level collaborative simulation architecture, obtaining corresponding first simulation results for each; simulating the coupling relationships between the opening and closing coils and the transmission mechanism, the transmission mechanism and the arc-extinguishing chamber, and the arc-extinguishing chamber and the near-zone circuit according to the pre-constructed four-level collaborative simulation architecture, obtaining corresponding second simulation results for each; and determining the overall simulation result of the high-voltage circuit breaker breaking process based on multiple first simulation results and multiple second simulation results. This method can improve the accuracy of high-voltage circuit breaker simulation results.

Description

Technical Field

[0001] This application relates to the field of high-voltage circuit breaker simulation technology, and in particular to a high-voltage circuit breaker simulation method, apparatus, computer equipment, and readable storage medium. Background Technology

[0002] The breaking capacity of high-voltage circuit breakers has a significant impact on the safety and stability of power systems. During the breaking process of a high-voltage circuit breaker, a high-temperature electric arc is generated, accompanied by complex electromagnetic field and mechanical interactions. These multi-physics coupling phenomena have a significant negative impact on the design, operation, and reliability of high-voltage circuit breakers. Therefore, it is necessary to study the arc behavior during the circuit breaker breaking process and its coupling mechanism with the transmission mechanism, electromagnetic drive module, and near-field circuit, thereby optimizing the design of high-voltage circuit breakers.

[0003] However, currently, both domestic and international simulations only cover independent system circuits, switching arcs, transmission mechanism dynamics, and electromagnetic drive simulations of opening and closing coils. These simulations, which focus on single physical fields, suffer from low accuracy in the simulation results. Summary of the Invention

[0004] Therefore, it is necessary to provide a high-voltage circuit breaker simulation method, apparatus, computer equipment, and readable storage medium that can improve the accuracy of simulation results in response to the above-mentioned technical problems.

[0005] Firstly, this application provides a high-voltage circuit breaker simulation method, including:

[0006] Based on the pre-constructed four-level collaborative simulation architecture of high-voltage circuit breakers, simulations were performed on the high-voltage circuit breaker components, including the opening and closing coils, transmission mechanism, arc-extinguishing chamber, and near-zone circuit, during the breaking process, and the corresponding first simulation results were obtained. The first simulation results characterize the electromagnetic field distribution law of the opening and closing coils during the breaking process, the kinematic and dynamic behavior of the transmission mechanism during the breaking process, the dynamic characteristics of the arc in the arc-extinguishing chamber, and the transient response of the near-zone circuit, respectively.

[0007] Based on the pre-built four-level collaborative simulation architecture of high-voltage circuit breakers, the coupling relationship between the opening and closing coils and the transmission mechanism, the coupling relationship between the transmission mechanism and the arc-extinguishing chamber, and the coupling relationship between the arc-extinguishing chamber and the near-field circuit are simulated respectively, and the corresponding second simulation results are obtained.

[0008] Based on multiple first simulation results and multiple second simulation results, the overall simulation results of the high-voltage circuit breaker's breaking process are determined.

[0009] In one embodiment, the pre-built four-level co-simulation architecture for high-voltage circuit breakers is constructed using the following method:

[0010] Obtain pre-constructed coupling models between the opening and closing coils and the transmission mechanism, between the transmission mechanism and the arc-extinguishing chamber, and between the arc-extinguishing chamber and the near-field circuit;

[0011] Based on the coupling models between the opening and closing coils and the transmission mechanism, the coupling model between the transmission mechanism and the arc-extinguishing chamber, the coupling model between the arc-extinguishing chamber and the near-zone circuit, and the preset solution timing, a four-level collaborative simulation architecture for high-voltage circuit breakers is constructed.

[0012] In one embodiment, obtaining pre-constructed coupling models between the opening and closing coils and the transmission mechanism, between the transmission mechanism and the arc-extinguishing chamber, and between the arc-extinguishing chamber and the near-field circuit includes:

[0013] Obtain pre-built electromagnetic drive simulation models, motion simulation models of transmission mechanisms, multi-physics field simulation models of electric arcs, and numerical equivalent models of near-field circuits for the opening and closing coils, transmission mechanisms, arc extinguishing chambers, and near-field circuits;

[0014] Based on the electromagnetic drive simulation model of the coil and the motion simulation model of the transmission mechanism, a coupling model between the opening and closing coil and the transmission mechanism is constructed.

[0015] Based on the motion simulation model of the transmission mechanism and the multiphysics simulation model of the electric arc, a coupling model between the transmission mechanism and the arc extinguishing chamber is constructed.

[0016] Based on the multiphysics simulation model of the electric arc and the numerical equivalent model of the near-field circuit, a coupling model between the arc extinguishing chamber and the near-field circuit is constructed.

[0017] In one embodiment, based on the electromagnetic drive simulation model of the coil and the motion simulation model of the transmission mechanism, a coupling model between the opening and closing coil and the transmission mechanism is constructed, including:

[0018] Based on the coupling relationship between the opening and closing coils and the transmission mechanism, the field quantity transmission relationship between the opening and closing coils and the transmission mechanism is determined; the field quantity transmission relationship is that the opening and closing coils control the movement of the transmission mechanism through the driving force, and the transmission mechanism constrains the electromagnetic force of the opening and closing coils.

[0019] Based on the field quantity transmission relationship between the opening and closing coils and the transmission mechanism, the electromagnetic drive simulation model of the coils, and the motion simulation model of the transmission mechanism, a coupling model between the opening and closing coils and the transmission mechanism is constructed by building pre-compiled equations.

[0020] In one embodiment, based on the motion simulation model of the transmission mechanism and the multiphysics simulation model of the electric arc, a coupling model between the transmission mechanism and the arc-extinguishing chamber is constructed, including:

[0021] Based on the coupling relationship between the transmission mechanism and the arc-extinguishing chamber, the field transmission relationship between the transmission mechanism and the arc-extinguishing chamber is determined; the field transmission relationship is that the transmission mechanism controls the piston movement of the arc-extinguishing chamber, and the electric arc of the arc-extinguishing chamber generates a reaction force on the transmission mechanism.

[0022] Based on the interaction between the transmission mechanism and the arc-extinguishing chamber, the motion simulation model of the transmission mechanism, and the multiphysics simulation model of the electric arc, a coupling model between the opening and closing coils and the transmission mechanism is constructed by writing an interface program.

[0023] In one embodiment, a coupling model between the arc-extinguishing chamber and the near-field circuit is constructed based on the multiphysics simulation model of the electric arc and the numerical equivalent model of the near-field circuit, including:

[0024] Based on the coupling relationship between the near-zone circuit and the arc-extinguishing chamber, the field quantity transfer relationship between the near-zone circuit and the arc-extinguishing chamber is determined. The field quantity transfer relationship is that the arc-extinguishing chamber reconstructs the circuit parameters of the near-zone circuit during the high-voltage circuit breaker breaking process, and the near-zone circuit transfers the circuit response to the arc-extinguishing chamber.

[0025] Based on the field transfer relationship between the near-field circuit and the arc-extinguishing chamber, the multi-physics simulation model of the arc, and the numerical equivalent model of the near-field circuit, a coupling model between the arc-extinguishing chamber and the near-field circuit is constructed by building pre-compiled equations.

[0026] In one embodiment, obtaining the formula corresponding to the pre-constructed numerical equivalent model of the near-field circuit includes:

[0027]

[0028] Where L is the equivalent inductance of the near-field circuit, C is the equivalent capacitance of the near-field circuit, R is the equivalent resistance of the near-field circuit, i is the current flowing through the near-field circuit, u is the output voltage of the near-field circuit, and R arc The arc resistance generated by the arc in the arc-extinguishing chamber is given by denoted as di / dt, which is the derivative of the current i flowing through the near-field circuit with respect to time t.

[0029] Secondly, this application also provides a high-voltage circuit breaker simulation device, comprising:

[0030] The first simulation module is used to simulate the high-voltage circuit breaker, including the opening and closing coils, transmission mechanism, arc-extinguishing chamber, and near-zone circuit, respectively, according to the pre-constructed four-level collaborative simulation architecture of the high-voltage circuit breaker during the breaking process, and obtain the corresponding first simulation results. The first simulation results respectively characterize the electromagnetic field distribution law of the opening and closing coils during the breaking process, the kinematic and dynamic behavior of the transmission mechanism during the breaking process, the dynamic characteristics of the arc in the arc-extinguishing chamber, and the transient response of the near-zone circuit.

[0031] The second simulation module is used to simulate the coupling relationship between the opening and closing coils and the transmission mechanism, the coupling relationship between the transmission mechanism and the arc-extinguishing chamber, and the coupling relationship between the arc-extinguishing chamber and the near-field circuit, respectively, based on the pre-built four-level collaborative simulation architecture of the high-voltage circuit breaker, and to obtain the corresponding second simulation results.

[0032] The results integration module is used to determine the overall simulation results of the high-voltage circuit breaker's breaking process based on multiple first simulation results and multiple second simulation results.

[0033] Thirdly, this application also provides a computer device, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to perform the following steps:

[0034] Based on the pre-constructed four-level collaborative simulation architecture of high-voltage circuit breakers, simulations were performed on the high-voltage circuit breaker components, including the opening and closing coils, transmission mechanism, arc-extinguishing chamber, and near-zone circuit, during the breaking process, and the corresponding first simulation results were obtained. The first simulation results characterize the electromagnetic field distribution law of the opening and closing coils during the breaking process, the kinematic and dynamic behavior of the transmission mechanism during the breaking process, the dynamic characteristics of the arc in the arc-extinguishing chamber, and the transient response of the near-zone circuit, respectively.

[0035] Based on the pre-built four-level collaborative simulation architecture of high-voltage circuit breakers, the coupling relationship between the opening and closing coils and the transmission mechanism, the coupling relationship between the transmission mechanism and the arc-extinguishing chamber, and the coupling relationship between the arc-extinguishing chamber and the near-field circuit are simulated respectively, and the corresponding second simulation results are obtained.

[0036] Based on multiple first simulation results and multiple second simulation results, the overall simulation results of the high-voltage circuit breaker's breaking process are determined.

[0037] Fourthly, this application also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, performs the following steps:

[0038] Based on the pre-constructed four-level collaborative simulation architecture of high-voltage circuit breakers, simulations were performed on the high-voltage circuit breaker components, including the opening and closing coils, transmission mechanism, arc-extinguishing chamber, and near-zone circuit, during the breaking process, and the corresponding first simulation results were obtained. The first simulation results characterize the electromagnetic field distribution law of the opening and closing coils during the breaking process, the kinematic and dynamic behavior of the transmission mechanism during the breaking process, the dynamic characteristics of the arc in the arc-extinguishing chamber, and the transient response of the near-zone circuit, respectively.

[0039] Based on the pre-built four-level collaborative simulation architecture of high-voltage circuit breakers, the coupling relationship between the opening and closing coils and the transmission mechanism, the coupling relationship between the transmission mechanism and the arc-extinguishing chamber, and the coupling relationship between the arc-extinguishing chamber and the near-field circuit are simulated respectively, and the corresponding second simulation results are obtained.

[0040] Based on multiple first simulation results and multiple second simulation results, the overall simulation results of the high-voltage circuit breaker's breaking process are determined.

[0041] The aforementioned high-voltage circuit breaker simulation method, apparatus, computer equipment, and readable storage medium, based on a pre-constructed four-level collaborative simulation architecture for high-voltage circuit breakers, simulate the opening and closing coils, transmission mechanism, arc-extinguishing chamber, and near-zone circuit of the high-voltage circuit breaker during the breaking process, obtaining corresponding first simulation results. These first simulation results characterize the electromagnetic field distribution of the opening and closing coils during the breaking process, the kinematic and dynamic behavior of the transmission mechanism during the breaking process, the dynamic characteristics of the arc in the arc-extinguishing chamber, and the transient response of the near-zone circuit, accurately revealing the physical characteristics and behavioral features of each module in the high-voltage circuit breaker. Further, based on the pre-constructed four-level collaborative simulation architecture for high-voltage circuit breakers, the coupling relationships between the opening and closing coils and the transmission mechanism, between the transmission mechanism and the arc-extinguishing chamber, and between the arc-extinguishing chamber and the near-zone circuit are simulated, obtaining corresponding second simulation results. The mutual influence relationships between the modules in the high-voltage circuit breaker during the breaking process are considered. Based on multiple first simulation results and multiple second simulation results, the overall simulation result of the high-voltage circuit breaker's breaking process is determined. A four-level collaborative simulation of high-voltage circuit breakers was achieved. Considering the coupling relationship between modules at each level, the overall simulation accuracy of the high-voltage circuit breaker breaking process was improved. Attached Figure Description

[0042] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments of this application or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0043] Figure 1 This is a flowchart illustrating a high-voltage circuit breaker simulation method in one embodiment;

[0044] Figure 2 This is a flowchart illustrating the steps involved in constructing a coupling model between modules at different levels in one embodiment.

[0045] Figure 3 This is a schematic diagram of the module transfer relationship in the design of a multiphysics simulation model of an electric arc in one embodiment;

[0046] Figure 4 This is a schematic diagram of the four-level collaborative simulation computing architecture for a high-voltage circuit breaker in one embodiment.

[0047] Figure 5 This is a schematic diagram of the opening and closing coil circuit of a high-voltage circuit breaker in one embodiment;

[0048] Figure 6 This is a structural block diagram of a high-voltage circuit breaker simulation device in one embodiment;

[0049] Figure 7 This is an internal structural diagram of a computer device in one embodiment. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0051] In one embodiment, such as Figure 1 As shown, a high-voltage circuit breaker simulation method is provided. This embodiment illustrates the method by applying it to a terminal. It is understood that this method can also be applied to a server, and to a system including both a terminal and a server, and implemented through interaction between the terminal and the server. In this embodiment, the method includes the following steps:

[0052] Step S102: Based on the pre-built four-level collaborative simulation architecture of high-voltage circuit breakers, the high-voltage circuit breaker, including the opening and closing coils, transmission mechanism, arc-extinguishing chamber and near-zone circuit, is simulated during the breaking process to obtain the corresponding first simulation results.

[0053] The first simulation results characterize the electromagnetic field distribution of the opening and closing coils during the opening process, the kinematic and dynamic behavior of the transmission mechanism during the opening process, the dynamic characteristics of the arc in the arc-extinguishing chamber, and the transient response of the near-field circuit.

[0054] Among them, the pre-built four-level collaborative simulation architecture of high-voltage circuit breakers can be a simulation calculation architecture constructed by the collaborative simulation of the simulation models corresponding to the four modules in the high-voltage circuit breaker according to the interaction relationship between the modules.

[0055] A high-voltage circuit breaker is a switching device used in power systems, capable of opening and closing under high voltage and high current. It is primarily used to control, protect, and disconnect circuits to prevent equipment damage or power system instability caused by faults. The closing and tripping coils are the electromagnetic mechanisms of a high-voltage circuit breaker, typically divided into a closing coil and a tripping coil. The closing coil closes the circuit breaker upon receiving a control signal, while the tripping coil opens the circuit breaker. The closing and tripping coils generate a magnetic field through current, causing related mechanical components to move, thus achieving the switching operation. The transmission mechanism converts the action of the closing and tripping coils into mechanical motion. It typically consists of a series of gears, levers, and springs, responsible for converting the electrical action of the coils into the mechanical operation of the circuit breaker, opening or closing the circuit. The arc-extinguishing chamber is the part of the high-voltage circuit breaker used to extinguish electric arcs. When a circuit breaker trips, an electric arc is generated at the instant of disconnection. The arc-extinguishing chamber rapidly cools and suppresses the arc through physical structure and medium (such as air, oil, or gas), preventing it from damaging the circuit breaker and other equipment and ensuring a safe and reliable disconnection operation. The near-zone circuit can be a circuit structure connecting a high-voltage circuit breaker to a high-voltage power grid.

[0056] Optionally, the server's simulation system, based on a pre-built four-level collaborative simulation architecture for high-voltage circuit breakers, simulates the high-voltage circuit breaker's components, including the closing and tripping coils, transmission mechanism, arc-extinguishing chamber, and near-zone circuit, during the breaking process. The simulation results are as follows: First simulation results for the closing and tripping coils, characterizing the electromagnetic field distribution and electromagnetic force generation during the breaking process; First simulation results for the transmission mechanism, characterizing its kinematic and dynamic behavior during the breaking process; First simulation results for the arc-extinguishing chamber, characterizing the dynamic characteristics of the arc generated during the breaking process, such as changes in arc parameters like resistance and current; and First simulation results for the near-zone circuit, characterizing its transient response during the breaking process.

[0057] Step S104: Based on the pre-constructed four-level collaborative simulation architecture of high-voltage circuit breakers, the coupling relationship between the opening and closing coils and the transmission mechanism, the coupling relationship between the transmission mechanism and the arc-extinguishing chamber, and the coupling relationship between the arc-extinguishing chamber and the near-field circuit are simulated respectively, and the corresponding second simulation results are obtained.

[0058] Coupling can be used to describe the mutual influence and dependency between two components.

[0059] Optionally, the server's simulation system simulates the coupling relationship between the opening and closing coils and the transmission mechanism, the coupling relationship between the transmission mechanism and the arc-extinguishing chamber, and the coupling relationship between the arc-extinguishing chamber and the near-field circuit, respectively, based on the pre-built four-level collaborative simulation architecture of the high-voltage circuit breaker, and obtains the corresponding second simulation results.

[0060] Step S106: Based on multiple first simulation results and multiple second simulation results, determine the overall simulation results of the high-voltage circuit breaker's breaking process.

[0061] Among them, the overall simulation results represent the simulation results of the entire process of the high-voltage circuit breaker's breaking process.

[0062] Optionally, the server's simulation system integrates multiple first simulation results and multiple second simulation results according to the solution timing of a pre-built four-level collaborative simulation architecture for high-voltage circuit breakers to determine the overall simulation result of the high-voltage circuit breaker's breaking process. The solution timing is determined based on the coupling relationship between the four modules in the high-voltage circuit breaker.

[0063] In the aforementioned high-voltage circuit breaker simulation method, based on a pre-constructed four-level collaborative simulation architecture for high-voltage circuit breakers, simulations are performed on the opening and closing coils, transmission mechanism, arc-extinguishing chamber, and near-zone circuit of the high-voltage circuit breaker during the breaking process, yielding corresponding first simulation results. These first simulation results characterize the electromagnetic field distribution of the opening and closing coils during the breaking process, the kinematic and dynamic behavior of the transmission mechanism during the breaking process, the dynamic characteristics of the arc in the arc-extinguishing chamber, and the transient response of the near-zone circuit, accurately revealing the physical characteristics and behavioral features of each module in the high-voltage circuit breaker. Further, based on the pre-constructed four-level collaborative simulation architecture for high-voltage circuit breakers, simulations are performed on the coupling relationships between the opening and closing coils and the transmission mechanism, between the transmission mechanism and the arc-extinguishing chamber, and between the arc-extinguishing chamber and the near-zone circuit, yielding corresponding second simulation results. The mutual influence relationships between the modules in the high-voltage circuit breaker during the breaking process are considered. Based on multiple first simulation results and multiple second simulation results, the overall simulation result of the high-voltage circuit breaker's breaking process is determined. A four-level collaborative simulation of high-voltage circuit breakers was achieved. Considering the coupling relationship between modules at each level, the overall simulation accuracy of the high-voltage circuit breaker breaking process was improved.

[0064] In an exemplary embodiment, the pre-built four-level co-simulation architecture for high-voltage circuit breakers described in the above embodiments is constructed using the following method:

[0065] Obtain the pre-built coupling models between the closing and tripping coils and the transmission mechanism, between the transmission mechanism and the arc-extinguishing chamber, and between the arc-extinguishing chamber and the near-zone circuit. Based on the coupling models between the closing and tripping coils and the transmission mechanism, between the transmission mechanism and the arc-extinguishing chamber, between the arc-extinguishing chamber and the near-zone circuit, and the preset solution timing, construct a four-level collaborative simulation architecture for high-voltage circuit breakers.

[0066] The preset solution sequence is determined based on the coupling relationship between modules at each level in the high-voltage circuit breaker.

[0067] Optionally, the server's simulation system determines the hierarchical structure of the high-voltage circuit breaker and the relationships between modules at each level, determines the coupling direction, and defines the interfaces between modules for data sharing and interaction. On a preset simulation platform, based on the pre-built coupling models between the opening and closing coils and the transmission mechanism, the coupling model between the transmission mechanism and the arc-extinguishing chamber, and the coupling model between the arc-extinguishing chamber and the near-zone circuit, the preset solution timing and interfaces between modules at each level are determined according to the coupling direction. The various coupling models are then integrated to construct a four-level collaborative simulation architecture for the high-voltage circuit breaker.

[0068] In this embodiment, by integrating the coupling models between modules at each level in the high-voltage circuit breaker to form an overall four-level collaborative simulation architecture for the high-voltage circuit breaker, the accuracy of the system simulation is improved, and the actual situation of the high-voltage circuit breaker during the breaking process can be reproduced more accurately.

[0069] In one exemplary embodiment, such as Figure 2 As shown, the steps of the above embodiment to obtain the pre-constructed coupling models between the opening and closing coils and the transmission mechanism, the coupling model between the transmission mechanism and the arc-extinguishing chamber, and the coupling model between the arc-extinguishing chamber and the near-field circuit include the following steps S202 to S208. Wherein:

[0070] Step S202: Obtain the pre-constructed electromagnetic drive simulation model of the coil, motion simulation model of the transmission mechanism, multi-physics field simulation model of the electric arc, and numerical equivalent model of the near-field circuit for the opening and closing coil, transmission mechanism, arc extinguishing chamber, and near-field circuit.

[0071] The electromagnetic drive simulation model for the coil can be an empirical dynamic behavior model of the electromagnetic drive module of the high-voltage circuit breaker. The electromagnetic drive module generates electromagnetic force to trigger the opening and closing coils for opening and closing operations. The motion simulation model for the transmission mechanism can be a model established using force transmission mechanics simulation software to simulate the kinematic and dynamic behavior of the transmission mechanism during the high-voltage circuit breaker's breaking process. The multiphysics simulation model for the electric arc can be a model established by simulating the generation, development, and extinction processes of electric arc plasma using an electric arc simulation software platform, considering factors such as arc temperature, gas flow, and magnetic field, to obtain the dynamic characteristics of the electric arc. The near-zone circuit data equivalent model can be a numerical model constructed by simplifying and discretizing the near-zone circuit.

[0072] Optionally, the server's simulation system acquires pre-built electromagnetic drive simulation models, motion simulation models, multi-physics simulation models, and numerical equivalent models of the near-field circuit for the opening and closing coils, transmission mechanisms, arc extinguishing chambers, and near-field circuits, providing a basis for subsequent construction of coupling models between modules at each level.

[0073] Step S204: Based on the electromagnetic drive simulation model of the coil and the motion simulation model of the transmission mechanism, construct a coupling model between the opening and closing coil and the transmission mechanism.

[0074] Optionally, the server's simulation system couples the electromagnetic drive simulation model of the coil with the motion simulation model of the transmission mechanism based on the coupling relationship between the opening and closing coil and the transmission mechanism, thus constructing a coupling model between the opening and closing coil and the transmission mechanism.

[0075] Step S206: Based on the motion simulation model of the transmission mechanism and the multiphysics simulation model of the electric arc, construct a coupling model between the transmission mechanism and the arc extinguishing chamber.

[0076] Optionally, the server's simulation system couples the motion simulation model of the transmission mechanism and the multiphysics simulation model of the electric arc based on the coupling relationship between the transmission mechanism and the arc-extinguishing chamber, thereby constructing a coupling model between the transmission mechanism and the arc-extinguishing chamber.

[0077] Step S208: Based on the multi-physics simulation model of the electric arc and the numerical equivalent model of the near-field circuit, construct a coupling model between the arc extinguishing chamber and the near-field circuit.

[0078] Optionally, the server's simulation system couples the arc multiphysics simulation model and the near-field circuit numerical equivalent model based on the coupling relationship between the arc extinguishing chamber and the near-field circuit to construct a coupling model between the arc extinguishing chamber and the near-field circuit.

[0079] In this embodiment, simulation models corresponding to the opening and closing coils, transmission mechanisms, arc-extinguishing chambers, and near-zone circuits are obtained. Based on the coupling relationship between modules at each level, the simulation models corresponding to the modules are coupled in pairs to establish a coupled model. This realizes that multiple physical fields (such as electromagnetic, mechanical, and thermal) are coupled in the high-voltage circuit breaker, making the simulated operation of the high-voltage circuit breaker more realistic and accurate, which helps to identify potential problems.

[0080] In an exemplary embodiment, step S204 constructs a coupling model between the opening / closing coil and the transmission mechanism based on the coil electromagnetic drive simulation model and the transmission mechanism motion simulation model, including:

[0081] Based on the coupling relationship between the opening and closing coils and the transmission mechanism, the field quantity transmission relationship between the opening and closing coils and the transmission mechanism is determined. Based on the field quantity transmission relationship between the opening and closing coils and the transmission mechanism, the electromagnetic drive simulation model of the coils and the motion simulation model of the transmission mechanism, the coupling model between the opening and closing coils and the transmission mechanism is constructed by constructing pre-compiled equations.

[0082] The field quantity transmission relationship between the opening and closing coils and the transmission mechanism is that the opening and closing coils control the movement of the transmission mechanism through the driving force, and the transmission mechanism constrains the electromagnetic force of the opening and closing coils.

[0083] Optionally, based on the coupling relationship between the closing / opening coil and the transmission mechanism, the electromagnetic force transmission relationship between the closing / opening coil and the transmission mechanism is determined, whereby the closing / opening coil controls the movement of the transmission mechanism through driving force, and the transmission mechanism constrains the electromagnetic force of the closing / opening coil. Thus, the pre-built electromagnetic drive simulation model of the coil and the motion simulation model of the transmission mechanism are coupled to obtain a coupled model between the closing / opening coil and the transmission mechanism. It should be noted that the coupling method can be to determine the input-output relationship between the electromagnetic drive simulation model of the coil and the motion simulation model of the transmission mechanism, construct equations describing their mutual influence, combine the two pre-compiled models to form a new coupled model, create an interface for data exchange and design a time synchronization mechanism, and then iteratively update the input and output of the coupled model according to the coupling relationship until convergence. After verification, the coupled model between the closing / opening coil and the transmission mechanism is obtained.

[0084] In this embodiment, the field quantity transfer relationship between the opening and closing coils and the transmission mechanism is coupled with their respective simulation models to construct a coupling model between the opening and closing coils and the transmission mechanism. The interaction between the two can be described by the coupling model, which further improves the simulation accuracy of the entire opening and closing process of the high-voltage circuit breaker.

[0085] In an exemplary embodiment, step S206 constructs a coupling model between the transmission mechanism and the arc-extinguishing chamber based on the motion simulation model of the transmission mechanism and the multiphysics simulation model of the electric arc, including:

[0086] Based on the coupling relationship between the transmission mechanism and the arc-extinguishing chamber, the field transfer relationship between the transmission mechanism and the arc-extinguishing chamber is determined; based on the interaction relationship between the transmission mechanism and the arc-extinguishing chamber, the motion simulation model of the transmission mechanism and the multi-physics field simulation model of the electric arc, the coupling model between the opening and closing coils and the transmission mechanism is constructed by writing an interface program.

[0087] The field transmission relationship between the transmission mechanism and the arc-extinguishing chamber is that the transmission mechanism controls the piston movement of the arc-extinguishing chamber, and the electric arc in the arc-extinguishing chamber generates a reaction force on the transmission mechanism.

[0088] Optionally, the server's simulation system, based on the coupling relationship between the transmission mechanism and the arc-extinguishing chamber, determines the field transfer relationship between them as follows: the transmission mechanism controls the piston movement of the arc-extinguishing chamber, and the electric arc in the arc-extinguishing chamber generates a reaction force on the transmission mechanism. Therefore, it is determined that there is a data exchange relationship between the corresponding models of the transmission mechanism and the arc-extinguishing chamber. Based on the interaction relationship between the transmission mechanism and the arc-extinguishing chamber, the motion simulation model of the transmission mechanism, and the multiphysics simulation model of the electric arc, an interface program is written to realize data exchange between the two simulation models. The motion data of the transmission mechanism is transmitted to the multiphysics model of the electric arc, and the mechanical feedback of the electric arc is applied to the transmission mechanism, thereby constructing a coupling model between the opening and closing coil and the transmission mechanism. The air pressure inside the cylinder in the arc-extinguishing chamber has a mechanical effect on the transmission mechanism; for example, the gas dynamics generated by the electric arc will generate a reaction force on the transmission mechanism.

[0089] In this embodiment, the server's simulation system, by establishing a coupling model and data interaction architecture between the transmission mechanism and the arc-extinguishing chamber, not only gains a deeper understanding of the operating mechanism of the transmission mechanism and the arc-extinguishing chamber, but also improves the overall simulation accuracy of the high-voltage circuit breaker.

[0090] In an exemplary embodiment, step S208 constructs a coupling model between the arc-extinguishing chamber and the near-field circuit based on the arc multiphysics simulation model and the near-field circuit numerical equivalent model, including:

[0091] Based on the coupling relationship between the near-field circuit and the arc-extinguishing chamber, the field transfer relationship between the near-field circuit and the arc-extinguishing chamber is determined. Based on the field transfer relationship between the near-field circuit and the arc-extinguishing chamber, the multi-physics simulation model of the electric arc, and the numerical equivalent model of the near-field circuit, a coupling model between the arc-extinguishing chamber and the near-field circuit is constructed by building pre-compiled equations.

[0092] Among them, the field quantity transfer relationship between the near-zone circuit and the arc-extinguishing chamber is that the arc-extinguishing chamber reconstructs the circuit parameters of the near-zone circuit during the high-voltage circuit breaker breaking process, and the near-zone circuit transfers the circuit response to the arc-extinguishing chamber.

[0093] The pre-constructed numerical equivalent model of the near-field circuit can be built as follows: the server's simulation system simplifies the near-field circuit and performs time-domain discretization to establish a numerical equivalent model. By analyzing the dynamic changes of the arc resistance element in the near-field circuit during the arc generation and extinction process, the response function of the corresponding changes in the near-field circuit is established, enabling real-time calculation of the transient response of the near-field circuit. The formulas corresponding to the numerical equivalent model of the near-field circuit include:

[0094]

[0095] Where L is the equivalent inductance of the near-field circuit, C is the equivalent capacitance of the near-field circuit, R is the equivalent resistance of the near-field circuit, i is the current flowing through the near-field circuit, u is the output voltage of the near-field circuit, and R arc The arc resistance generated by the arc in the arc-extinguishing chamber is given by denoted as di / dt, which is the derivative of the current i flowing through the near-field circuit with respect to time t.

[0096] One method for constructing the pre-built multiphysics simulation model of the electric arc can be: relying on an electric arc simulation software platform, simulating the generation, development, and extinction processes of the electric arc plasma, and considering factors such as arc temperature, gas flow, and magnetic field to establish a multiphysics simulation model of the electric arc and obtain the dynamic characteristics of the electric arc. For example... Figure 3 As shown, the module transfer relationship of the electric arc multiphysics simulation model design is provided. The electric arc multiphysics simulation involves real gas model, fluid electromagnetic calculation, magnetothermal coupling, thermal-fluid coupling, fluid heat transfer calculation, and fluid axisymmetric NS simulation solution.

[0097] Optionally, the server's simulation system, based on the coupling relationship between the near-field circuit and the arc-extinguishing chamber, determines the field quantity transfer relationship between the near-field circuit and the arc-extinguishing chamber as follows: the arc-extinguishing chamber reconstructs the circuit parameters of the near-field circuit during the high-voltage circuit breaker's breaking process, and the near-field circuit transfers the circuit response to the arc-extinguishing chamber. Based on the field quantity transfer relationship between the near-field circuit and the arc-extinguishing chamber, the multi-physics simulation model of the arc, and the numerical equivalent model of the near-field circuit, a data sharing interface is established between the two by constructing pre-compiled equations, thereby constructing a coupling model between the arc-extinguishing chamber and the near-field circuit.

[0098] In this embodiment, by studying the coupling relationship between the near-zone circuit and the arc-extinguishing chamber, a deeper understanding of the dynamic characteristics of the circuit during the high-voltage circuit breaker's breaking process can be achieved. Combining the multiphysics simulation model of the arc and the equivalent numerical model of the near-zone circuit, a comprehensive analysis of the interaction between the near-zone circuit and the arc-extinguishing chamber under complex conditions can be conducted, improving the accuracy and reliability of the simulation and providing a more scientific basis for subsequent high-voltage circuit breaker design.

[0099] In one exemplary embodiment, a simulation method based on a four-level collaborative simulation computing architecture for high-voltage circuit breakers is provided, including:

[0100] Step 1, as follows Figure 4 The diagram illustrates a four-level collaborative simulation architecture for a high-voltage circuit breaker. To establish this architecture, the interaction relationships between the four modules must first be clarified: the opening and closing coils control the movement of the transmission mechanism via driving force; the transmission mechanism determines the piston movement of the arc-extinguishing chamber; and the arc-extinguishing chamber's opening process reconstructs the external near-field system circuit parameters (such as arc resistance). Conversely, the near-field system (corresponding to the near-field circuit in the above embodiment) transmits external responses (such as short-circuit current) to the arc-extinguishing chamber; the arc-extinguishing chamber's opening process, in turn, hinders the transmission of the transmission mechanism, and the transmission mechanism also inversely constrains the electromagnetic force of the coil.

[0101] Step 2: Establish a simulation architecture for the coupling between the near-zone circuit and the arc during the breaking process (corresponding to the coupling model between the near-zone circuit and the arc extinguishing chamber in the above embodiment). During the breaking process of a high-voltage circuit breaker, the influence of the near-zone circuit on the arc behavior cannot be ignored. The formation and extinguishing of the arc significantly alter the impedance characteristics of the circuit, thereby affecting the transient response of the circuit. To accurately simulate this process, this invention proposes a method of embedding the near-zone circuit equations into the arc plasma model through pre-compiled equations for coupled solution. Specific research: A simplified equivalent numerical equation for the near-zone circuit is established as shown in equation (1), and time-domain discretization is performed to establish an equivalent circuit numerical model. By analyzing the dynamic changes of the arc resistance element in the circuit during the arc generation and extinguishing process, the corresponding response function in the circuit is established, enabling real-time calculation of the circuit's transient response.

[0102] (1)

[0103] Where L is the equivalent inductance of the near-field system, C is the equivalent capacitance of the near-field system, R is the equivalent resistance of the near-field system, i is the current, u is the voltage, and R arc The arc resistance is used. The near-field circuit is coupled to the arc magnetohydrodynamics through the arc resistance. Using an arc simulation software platform, the generation, development, and extinction processes of the arc plasma are simulated. A multiphysics simulation model of the arc is established, considering factors such as arc temperature, gas flow, and magnetic field, to obtain the dynamic characteristics of the arc. The multiphysics simulation of the arc involves realistic gas models, fluid electromagnetic calculations, magnetothermal coupling, thermal-fluid coupling, fluid heat transfer calculations, and axisymmetric NS simulation solutions. Pre-compiled equations are established, and the numerical equivalent equations of the near-field circuit are coupled with the multiphysics simulation model of the arc using numerical methods to analyze their impact on arc behavior and perform simulations.

[0104] Step 3: Establish a high-voltage switch arc-transmission mechanism mechanical coupling simulation architecture (corresponding to the coupling model between the transmission mechanism and the arc-extinguishing chamber in the above embodiment). During the high-voltage circuit breaker's breaking process, the presence of the arc will generate a reaction force on the transmission mechanism, thus affecting its motion characteristics. A transmission mechanism model is established using force transmission mechanics simulation software to simulate its kinematic and dynamic behavior during the breaking process. Based on the arc multiphysics simulation model, the mechanical influence of the air pressure inside the cylinder on the transmission mechanism is considered, such as the gas dynamics generated by the arc and the resulting reaction force. An interface program is written to realize data exchange between the force transmission mechanics simulation and the arc multiphysics simulation model, transmitting the transmission mechanism's motion data to the arc model and applying the arc's mechanical feedback to the transmission mechanism, achieving real-time coupled simulation between the two.

[0105] Step 4: Establish an empirical driving model coupled with the switching transmission mechanism simulation architecture (corresponding to the coupling model between the opening / closing coils and the transmission mechanism in the above embodiments). As a crucial component of the high-voltage circuit breaker, the electromagnetic drive module's performance directly affects the circuit breaker's operational reliability. During the breaking process, the electromagnetic drive module and the switching transmission mechanism are tightly coupled, and their interaction influences the dynamic response of the entire system. An empirical dynamic behavior model of the electromagnetic drive module is established to approximate its electromagnetic field distribution and electromagnetic force generation during the breaking process. The model of the electromagnetic drive module is coupled with the model of the transmission mechanism, and their co-simulation is achieved through pre-compiled equations. The schematic diagram of the opening / closing coil circuit of the high-voltage circuit breaker is shown below. Figure 5 As shown. The high-voltage circuit breaker includes a tripping coil 1, a time-delay relay 2, a control switch 3, a DC power supply 4, a trip coil 5, a return spring 6, a trip lever 7, and a moving iron core 8. The secondary circuit is connected by the control switch 3. The trip coil 5 generates electromagnetic force to drive the moving iron core 8 to move until the moving iron core 8 collides with the trip lever 7, thereby triggering a tripping (closing) operation.

[0106] Step 5: Based on the above three sets of coupled models, a four-level co-simulation framework is built, the solution timing is designed, and the near-zone circuit, arc-extinguishing chamber, transmission mechanism, and electromagnetic drive module of the opening and closing coils are integrated into a unified four-level co-simulation system. Through four-level coupled co-simulation, a full-process simulation model of the circuit breaker breaking process under fixed operating conditions and structure of the high-voltage switch can be realized, analyzing the interaction between subsystems and their impact on circuit breaker performance, thus achieving four-level coupled co-simulation of the high-voltage switch.

[0107] In this embodiment, the breaking process of a high-voltage circuit breaker is a complex process involving multiple physics fields and multi-level coupling. To comprehensively and accurately simulate this process, this invention proposes a four-level co-simulation architecture, which includes the coupled solution of four subsystems: near-field circuit, electric arc, transmission mechanism, and electromagnetic drive module. Based on the above three sets of coupled systems, a four-level co-simulation framework is built, the solution timing is designed, and the near-field circuit, electric arc, transmission mechanism, and electromagnetic drive module are integrated into a unified four-level co-simulation system. Through four-level coupled co-simulation, a full-process simulation model of the circuit breaker breaking process under fixed operating conditions and structure of the high-voltage switch can be realized, analyzing the interaction between each subsystem and its impact on the circuit breaker performance, thus achieving four-level coupled co-simulation of the high-voltage switch.

[0108] It should be understood that although the steps in the flowcharts of the embodiments described above are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the embodiments described above may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages of other steps.

[0109] Based on the same inventive concept, this application also provides a high-voltage circuit breaker simulation device for implementing the high-voltage circuit breaker simulation method described above. The solution provided by this device is similar to the solution described in the above method; therefore, the specific limitations of one or more high-voltage circuit breaker simulation device embodiments provided below can be found in the limitations of the high-voltage circuit breaker simulation method described above, and will not be repeated here.

[0110] In one exemplary embodiment, such as Figure 6 As shown, a high-voltage circuit breaker simulation device 600 is provided, including: a first simulation module 602, a second simulation module 604, and a result integration module 606, wherein:

[0111] The first simulation module 602 is used to simulate the high-voltage circuit breaker, including the opening and closing coils, transmission mechanism, arc-extinguishing chamber, and near-zone circuit, respectively, according to the pre-constructed four-level collaborative simulation architecture of the high-voltage circuit breaker during the breaking process, and obtain the corresponding first simulation results. The first simulation results respectively characterize the electromagnetic field distribution law of the opening and closing coils during the breaking process, the kinematic and dynamic behavior of the transmission mechanism during the breaking process, the dynamic characteristics of the arc in the arc-extinguishing chamber, and the transient response of the near-zone circuit.

[0112] The second simulation module 604 is used to simulate the coupling relationship between the opening and closing coils and the transmission mechanism, the coupling relationship between the transmission mechanism and the arc-extinguishing chamber, and the coupling relationship between the arc-extinguishing chamber and the near-field circuit, respectively, based on the pre-built four-level collaborative simulation architecture of the high-voltage circuit breaker, and to obtain the corresponding second simulation results.

[0113] The result integration module 606 is used to determine the overall simulation results of the high-voltage circuit breaker's breaking process based on multiple first simulation results and multiple second simulation results.

[0114] Furthermore, in one embodiment, the high-voltage circuit breaker simulation device 600 also includes a simulation architecture establishment module, used to acquire pre-built coupling models between the opening and closing coils and the transmission mechanism, between the transmission mechanism and the arc-extinguishing chamber, and between the arc-extinguishing chamber and the near-zone circuit; and to construct a four-level collaborative simulation architecture for the high-voltage circuit breaker based on the coupling models between the opening and closing coils and the transmission mechanism, between the transmission mechanism and the arc-extinguishing chamber, between the arc-extinguishing chamber and the near-zone circuit, and the preset solution timing sequence.

[0115] Furthermore, in one embodiment, the simulation architecture establishment module is also used to acquire pre-built simulation models of coil electromagnetic drive, transmission mechanism motion, arc multiphysics field, and near-field circuit for the opening and closing coil, transmission mechanism, arc extinguishing chamber, and near-field circuit; construct a coupling model between the opening and closing coil and the transmission mechanism based on the coil electromagnetic drive simulation model and the transmission mechanism motion simulation model; construct a coupling model between the transmission mechanism and the arc extinguishing chamber based on the transmission mechanism motion simulation model and the arc multiphysics field simulation model; and construct a coupling model between the arc extinguishing chamber and the near-field circuit based on the arc multiphysics field simulation model and the near-field circuit numerical equivalent model.

[0116] Furthermore, in one embodiment, the simulation framework establishment module is also used to determine the field quantity transmission relationship between the opening and closing coil and the transmission mechanism based on the coupling relationship between the opening and closing coil and the transmission mechanism; the field quantity transmission relationship is that the opening and closing coil controls the movement of the transmission mechanism through the driving force, and the transmission mechanism constrains the electromagnetic force of the opening and closing coil; based on the field quantity transmission relationship between the opening and closing coil and the transmission mechanism, the electromagnetic drive simulation model of the coil and the motion simulation model of the transmission mechanism, the coupling model between the opening and closing coil and the transmission mechanism is constructed by constructing pre-compiled equations.

[0117] Furthermore, in one embodiment, the simulation framework establishment module is also used to determine the field quantity transmission relationship between the transmission mechanism and the arc-extinguishing chamber based on the coupling relationship between the transmission mechanism and the arc-extinguishing chamber; the field quantity transmission relationship is that the transmission mechanism controls the piston movement of the arc-extinguishing chamber, and the arc of the arc-extinguishing chamber generates a reaction force on the transmission mechanism; based on the interaction relationship between the transmission mechanism and the arc-extinguishing chamber, the motion simulation model of the transmission mechanism, and the multi-physics field simulation model of the arc, the coupling model between the opening and closing coils and the transmission mechanism is constructed by writing an interface program.

[0118] Furthermore, in one embodiment, the simulation architecture establishment module is also used to determine the field quantity transfer relationship between the near-field circuit and the arc-extinguishing chamber based on the coupling relationship between them. The field quantity transfer relationship is the circuit parameters of the near-field circuit reconstructed by the arc-extinguishing chamber during the high-voltage circuit breaker breaking process, and the circuit response transferred from the near-field circuit to the arc-extinguishing chamber. Based on the field quantity transfer relationship between the near-field circuit and the arc-extinguishing chamber, the multi-physics simulation model of the arc, and the numerical equivalent model of the near-field circuit, a coupling model between the arc-extinguishing chamber and the near-field circuit is constructed by constructing pre-compiled equations.

[0119] Each module in the aforementioned high-voltage circuit breaker simulation device 600 can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in the processor of a computer device in hardware form or independent of it, or stored in the memory of a computer device in software form, so that the processor can call and execute the operations corresponding to each module.

[0120] In one exemplary embodiment, a computer device is provided, which may be a server, and its internal structure diagram may be as follows: Figure 7 As shown, the computer device includes a processor, memory, input / output (I / O) interfaces, and a communication interface. The processor, memory, and I / O interfaces are connected via a system bus, and the communication interface is also connected to the system bus via the I / O interfaces. The processor provides computational and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system, computer programs, and a database. The internal memory provides the environment for the operation of the operating system and computer programs stored in the non-volatile storage media. The database stores simulation-related data for the four-level co-simulation architecture of high-voltage circuit breakers. The I / O interfaces are used for information exchange between the processor and external devices. The communication interface is used for communication with external terminals via a network connection. When the computer program is executed by the processor, it implements a high-voltage circuit breaker simulation method.

[0121] Those skilled in the art will understand that Figure 7The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0122] In one embodiment, a computer device is also provided, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps in the above method embodiments.

[0123] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon that, when executed by a processor, implements the steps in the above method embodiments.

[0124] In one embodiment, a computer program product is provided, including a computer program that, when executed by a processor, implements the steps in the above method embodiments.

[0125] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, artificial intelligence (AI) processors, etc., and are not limited to these.

[0126] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0127] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A simulation method for high-voltage circuit breakers, characterized in that, The method includes: Based on the pre-constructed four-level collaborative simulation architecture for high-voltage circuit breakers, simulations are performed on the opening and closing coils, transmission mechanisms, arc-extinguishing chambers, and near-zone circuits of the high-voltage circuit breaker during the breaking process, respectively, to obtain the corresponding first simulation results. The first simulation results characterize the electromagnetic field distribution law of the opening and closing coils during the breaking process, the kinematic and dynamic behavior of the transmission mechanism during the breaking process, the dynamic characteristics of the arc in the arc-extinguishing chamber, and the transient response of the near-zone circuit. Based on the pre-constructed four-level collaborative simulation architecture of high-voltage circuit breakers, the coupling relationship between the opening and closing coils and the transmission mechanism, the coupling relationship between the transmission mechanism and the arc-extinguishing chamber, and the coupling relationship between the arc-extinguishing chamber and the near-field circuit are simulated respectively, and the corresponding second simulation results are obtained. Based on multiple first simulation results and multiple second simulation results, the overall simulation results of the high-voltage circuit breaker's breaking process are determined; The construction method of the pre-built four-level collaborative simulation architecture for high-voltage circuit breakers includes: acquiring pre-built electromagnetic drive simulation models of the coils, motion simulation models of the transmission mechanisms, multi-physics simulation models of the arc, and numerical equivalent models of the near-zone circuit for the opening and closing coils, the transmission mechanism, the arc-extinguishing chamber, and the near-zone circuit; constructing a coupling model between the opening and closing coils and the transmission mechanism based on the electromagnetic drive simulation model of the coils and the motion simulation model of the transmission mechanism; constructing a coupling model between the transmission mechanism and the arc-extinguishing chamber based on the motion simulation model of the transmission mechanism and the multi-physics simulation model of the arc; constructing a coupling model between the arc-extinguishing chamber and the near-zone circuit based on the multi-physics simulation model of the arc and the numerical equivalent model of the near-zone circuit; and constructing the four-level collaborative simulation architecture for high-voltage circuit breakers based on the coupling models between the opening and closing coils and the transmission mechanism, the transmission mechanism and the arc-extinguishing chamber, the arc-extinguishing chamber and the near-zone circuit, and a preset solution sequence.

2. The method according to claim 1, characterized in that, The step of constructing a coupling model between the opening / closing coil and the transmission mechanism based on the electromagnetic drive simulation model of the coil and the motion simulation model of the transmission mechanism includes: Based on the coupling relationship between the opening / closing coil and the transmission mechanism, the field quantity transmission relationship between the opening / closing coil and the transmission mechanism is determined; the field quantity transmission relationship is that the opening / closing coil controls the movement of the transmission mechanism through the driving force, and the transmission mechanism constrains the electromagnetic force of the opening / closing coil. Based on the field quantity transmission relationship between the opening and closing coil and the transmission mechanism, the electromagnetic drive simulation model of the coil and the motion simulation model of the transmission mechanism, a coupling model between the opening and closing coil and the transmission mechanism is constructed by building pre-compiled equations.

3. The method according to claim 1, characterized in that, The step of constructing a coupling model between the transmission mechanism and the arc-extinguishing chamber based on the motion simulation model of the transmission mechanism and the multiphysics simulation model of the electric arc includes: Based on the coupling relationship between the transmission mechanism and the arc-extinguishing chamber, the field transmission relationship between the transmission mechanism and the arc-extinguishing chamber is determined; the field transmission relationship is that the transmission mechanism controls the piston movement of the arc-extinguishing chamber, and the electric arc of the arc-extinguishing chamber generates a reaction force on the transmission mechanism. Based on the interaction between the transmission mechanism and the arc-extinguishing chamber, the motion simulation model of the transmission mechanism, and the multiphysics simulation model of the electric arc, a coupling model between the opening and closing coils and the transmission mechanism is constructed by writing an interface program.

4. The method according to claim 1, characterized in that, The step of constructing a coupling model between the arc-extinguishing chamber and the near-field circuit based on the multiphysics simulation model of the electric arc and the numerical equivalent model of the near-field circuit includes: Based on the coupling relationship between the near-zone circuit and the arc-extinguishing chamber, the field quantity transfer relationship between the near-zone circuit and the arc-extinguishing chamber is determined; the field quantity transfer relationship is that the arc-extinguishing chamber reconstructs the circuit parameters of the near-zone circuit during the high-voltage circuit breaker's opening process, and the near-zone circuit transmits the circuit response to the arc-extinguishing chamber; Based on the field transfer relationship between the near-field circuit and the arc-extinguishing chamber, the multiphysics simulation model of the electric arc, and the numerical equivalent model of the near-field circuit, a coupling model between the arc-extinguishing chamber and the near-field circuit is constructed by building pre-compiled equations.

5. The method according to claim 1, characterized in that, The formula for obtaining the pre-constructed numerical equivalent model of the near-field circuit includes: Where L is the equivalent inductance of the near-field circuit, C is the equivalent capacitance of the near-field circuit, R is the equivalent resistance of the near-field circuit, i is the current flowing through the near-field circuit, u is the output voltage of the near-field circuit, and R arc The arc resistance generated by the arc in the arc-extinguishing chamber is denoted as di / dt, and the derivative of the current i flowing through the near-field circuit with respect to time t is denoted as di / dt.

6. A high-voltage circuit breaker simulation device, characterized in that, The device includes: The first simulation module is used to simulate the high-voltage circuit breaker's opening and closing coils, transmission mechanism, arc-extinguishing chamber, and near-zone circuit during the breaking process, respectively, based on a pre-constructed four-level collaborative simulation architecture for high-voltage circuit breakers, and obtain corresponding first simulation results. The first simulation results characterize the electromagnetic field distribution law of the opening and closing coils during the breaking process, the kinematic and dynamic behavior of the transmission mechanism during the breaking process, the dynamic characteristics of the arc in the arc-extinguishing chamber, and the transient response of the near-zone circuit. The second simulation module is used to simulate the coupling relationship between the opening and closing coils and the transmission mechanism, the coupling relationship between the transmission mechanism and the arc-extinguishing chamber, and the coupling relationship between the arc-extinguishing chamber and the near-field circuit, respectively, based on the pre-built four-level collaborative simulation architecture of the high-voltage circuit breaker, and to obtain the corresponding second simulation results. The result integration module is used to determine the overall simulation result of the high-voltage circuit breaker's breaking process based on multiple first simulation results and multiple second simulation results; The construction method of the pre-built four-level collaborative simulation architecture for high-voltage circuit breakers includes: acquiring pre-built electromagnetic drive simulation models of the coils, motion simulation models of the transmission mechanisms, multi-physics simulation models of the arc, and numerical equivalent models of the near-zone circuit for the opening and closing coils, the transmission mechanism, the arc-extinguishing chamber, and the near-zone circuit; constructing a coupling model between the opening and closing coils and the transmission mechanism based on the electromagnetic drive simulation model of the coils and the motion simulation model of the transmission mechanism; constructing a coupling model between the transmission mechanism and the arc-extinguishing chamber based on the motion simulation model of the transmission mechanism and the multi-physics simulation model of the arc; constructing a coupling model between the arc-extinguishing chamber and the near-zone circuit based on the multi-physics simulation model of the arc and the numerical equivalent model of the near-zone circuit; and constructing the four-level collaborative simulation architecture for high-voltage circuit breakers based on the coupling models between the opening and closing coils and the transmission mechanism, the transmission mechanism and the arc-extinguishing chamber, the arc-extinguishing chamber and the near-zone circuit, and a preset solution sequence.

7. The apparatus according to claim 6, characterized in that, The device further includes: The simulation framework construction module is used to determine the field quantity transmission relationship between the opening / closing coil and the transmission mechanism based on the coupling relationship between them. The field quantity transmission relationship is that the opening / closing coil controls the movement of the transmission mechanism through a driving force, and the transmission mechanism constrains the electromagnetic force of the opening / closing coil. Based on the field quantity transmission relationship between the opening / closing coil and the transmission mechanism, the electromagnetic drive simulation model of the coil, and the motion simulation model of the transmission mechanism, a coupling model between the opening / closing coil and the transmission mechanism is constructed by building pre-compiled equations.

8. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the method according to any one of claims 1 to 5.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 5.

10. A computer program product, characterized in that, It includes a computer program that, when executed by a processor, implements the steps of the method according to any one of claims 1 to 5.

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