Method, apparatus, device, medium and product for optimizing high-voltage circuit breaker structure

Abstract

The application discloses an optimization method, device, equipment, medium and product of a high-voltage circuit breaker structure, applied to the technical field of high-voltage circuit breakers, and comprises the following steps: obtaining a plurality of relative position information of a contact and a plug, gas parameters and operating condition parameters of the high-voltage circuit breaker; inputting each relative position information into a preset contact dynamics model to obtain a radius change sequence of a throat of the contact relative to the plug; based on the radius change sequence and the obtained slit structure parameters of the high-voltage circuit breaker, the area change sequence of the gas flow of each slit is calculated; each area change sequence, the gas parameters and the operating condition parameters are inputted into a preset arc model to simulate the pressure accumulation process of the high-voltage circuit breaker, and a simulation result is obtained; and the structure of the contact, the plug and the slit is optimized based on the simulation result. The application can improve the accuracy of the structure optimization of the high-voltage circuit breaker.

Description

Technical Field

[0001] This invention relates to the field of high-voltage circuit breaker technology, and in particular to methods, apparatus, equipment, media, and products for optimizing the structure of high-voltage circuit breakers. Background Technology

[0002] As power systems develop towards higher voltage levels, larger transmission capacities, and greater intelligence, high-voltage circuit breakers, as key protection devices for the power grid, directly impact system safety with their breaking performance and operational reliability. Without precise optimization, they can easily lead to breaking failures, reignition, mechanical damage, or abnormal pressure buildup, ultimately causing equipment failure or even power grid accidents.

[0003] Existing technologies mainly employ lumped parameter simulation based on fixed geometric assumptions for high-voltage circuit breaker optimization. However, this method has significant drawbacks: to simplify the calculation model, it pre-sets the inner radius of the contact throat and the flow area of ​​the slit as constant values ​​throughout the entire breaking process, completely ignoring the dynamic changes in the flow channel area caused by the relative motion between the contact and the plug. This results in the model failing to accurately reflect the key physical mechanisms of airflow obstruction and release during pressure accumulation, leading to a systematic deviation between the output pressure prediction curve and the actual value. Consequently, the accuracy of high-voltage circuit breaker optimization is severely insufficient, making it difficult to achieve precise optimization and improvement. Summary of the Invention

[0004] This invention provides a method, apparatus, equipment, medium, and product for optimizing the structure of high-voltage circuit breakers, which can improve the accuracy of high-voltage circuit breaker structure optimization.

[0005] In a first aspect, an embodiment of the present invention provides a method for optimizing the structure of a high-voltage circuit breaker, the high-voltage circuit breaker including contacts, a plug, and a plurality of slits, the method comprising: Acquire several relative position information of the contact and the plug, as well as the gas parameters and operating condition parameters of the high-voltage circuit breaker; The relative position information of each contact is input into a preset contact dynamics model to obtain the radius change sequence of the contact relative to the plug. Based on the radius change sequence and the obtained slit structure parameters of the high-voltage circuit breaker, the area change sequence of gas flow in each slit is calculated. The area change sequence, the gas parameters and the operating condition parameters are input into a preset arc model to simulate the pressure accumulation process of the high-voltage circuit breaker and obtain simulation results. The structure of the contact, the plug, and the slit is optimized based on the simulation results.

[0006] By collecting relative position information of the contacts and plugs, gas parameters of the high-voltage circuit breaker, and operating condition parameters, comprehensive and realistic data support is provided for the optimization of the high-voltage circuit breaker, ensuring the accuracy of the optimization from the source. Based on a pre-set contact dynamics model, the relative position information is transformed into a throat radius change sequence, which more realistically reflects the impact of contact movement on the airflow channel, providing accurate dynamic parameter input for subsequent pressure accumulation simulation and improving the reliability of the optimization basis. Based on the throat radius change sequence and the obtained slit structure parameters of the high-voltage circuit breaker, the total gas flow area change sequence is calculated, accurately capturing the correlation between contact dynamics and the slit flow channel, ensuring the accuracy of gas flow resistance calculation and providing precise guidance for the optimization direction. The arc model integrates the area change sequence, gas parameters, and operating condition parameters to simulate the pressure accumulation process, outputting simulation results and providing accurate quantitative basis for subsequent optimization analysis. Based on the quantified model results, the structure of the contacts, plugs, and slits is optimized, ensuring that the optimization of the high-voltage circuit breaker is entirely based on realistic and reliable physical process simulation, fundamentally improving the accuracy of the high-voltage circuit breaker optimization design. This application can improve the accuracy of high-voltage circuit breaker optimization.

[0007] Furthermore, the step of inputting the relative position information of each contact into a preset contact dynamics model to obtain the radius change sequence of the throat of the contact relative to the plug specifically includes: Obtain the cone angle, phase length, and tip radius of the plug of the contact; Based on the cone angle and the radius of the top arc, a first critical distance value between the plug and the contact is determined; Based on the first critical distance value and the phase length, a second critical distance value between the plug and the contact is determined, wherein the second critical distance value is greater than the first critical distance value; Based on the relative position information, the first critical distance value, and the second critical distance value, the radius change sequence of the throat of the contact relative to the plug is calculated.

[0008] By obtaining the contact cone angle, phase length, and top arc radius of the plug, and using these parameters to divide the first and second critical distance values, a precise geometric constraint framework is established for the dynamic calculation of the contact throat radius. This allows the relative motion between the contact and the plug to be decomposed into characteristic positions at different stages, avoiding the ambiguity in radius calculation caused by neglecting the division of contact stages in traditional models. This ensures that the derivation of the subsequent radius change sequence has clear physical boundary support, improving the accuracy of subsequent structural optimization.

[0009] Furthermore, the step of calculating the radius change sequence of the throat of the contact relative to the plug based on the relative position information, the first critical distance value, and the second critical distance value specifically includes: If the relative position information is less than a preset threshold, then the first radius of the throat of the contact is calculated based on the top arc radius and the obtained first distance, wherein the first distance is determined by the radial distance from the center of the top arc of the plug to the axis of the contact; If the relative position information is greater than or equal to the preset threshold, then based on the first critical distance value, the second critical distance value, the first distance, the top arc radius, the cone angle, and the phase length, the second radius, the third radius, and the fourth radius of the throat of the contact are calculated. Based on the first radius, the second radius, the third radius, and the fourth radius, a sequence of radius changes of the throat of the contact relative to the plug is determined.

[0010] Based on the correspondence between relative position information and preset thresholds and critical distance values, the contact throat radius is calculated for different stages in different scenarios. This division method not only considers the initial state when the plug is not in contact, but also accurately captures the radius change characteristics when different critical distance values ​​are switched during the contact process. It avoids the defect that a single calculation model cannot adapt to the entire motion process, and makes the throat radius change sequence more in line with the actual physical motion law, thereby enhancing the accuracy of high-voltage circuit breaker structure optimization.

[0011] Furthermore, the calculation of the second radius, third radius, and fourth radius of the throat of the contact based on the first critical distance value, the second critical distance value, the first distance, the radius of the top arc, the cone angle, and the phase length specifically includes: If the relative position information is less than or equal to the first critical distance value, then the second radius of the throat of the contact is calculated based on the first constraint relationship, wherein the first constraint relationship is determined by the first distance, the top arc radius and the relative position information; If the relative position information is greater than the first critical distance value and less than or equal to the second critical distance value, then the third radius of the throat of the contact is calculated based on the second constraint relationship, wherein the second constraint relationship is determined by the relative position information and the cone angle; If the relative position information is greater than the second critical distance value, then the fourth radius of the throat of the contact is calculated based on the third constraint relationship, wherein the third constraint relationship is determined by the relative position information, the phase length, the cone angle, the first distance and the top arc radius.

[0012] By employing differentiated constraint relationships to calculate the corresponding contact throat radius for different relative position intervals, each constraint relationship focuses on the core influencing parameters of the corresponding interval, avoiding calculation deviations caused by parameter redundancy or missing key parameters. This ensures that the throat radius calculation for each interval has clear physical logic support, significantly improving the accuracy of the radius change sequence and providing precise quantitative basis for structural optimization.

[0013] Furthermore, the calculation of the area change sequence of gas flow in each slit based on the radius change sequence and the obtained slit structure parameters of the high-voltage circuit breaker specifically includes: Based on the radius change sequence and the preset radius reference value, several radius changes within a preset time period are calculated; Based on the radius changes and the slit structure parameters, several variable bottom edge lengths of the throat are calculated. Based on the variable base length of each throat and the slit structure parameters, the area change sequence of gas flow in each slit is calculated.

[0014] By deriving the radius change, the variable bottom length of the throat, and the flow area of ​​the slit, a precise correlation was established between the contact dynamics and the slit flow channel. This process transforms the abstract radius change into specific flow channel geometric parameters, fully combining the slit structural characteristics and avoiding the disconnect from the actual structure caused by directly assuming the flow channel area in traditional methods. By calculating the area change sequence of each slit, the dynamic influence of contact movement on gas flow resistance was accurately captured, providing key support for the reliability of subsequent pressure accumulation simulation and thus improving the accuracy of structural optimization.

[0015] Furthermore, the step of inputting the area change sequences, gas parameters, and operating condition parameters into a preset arc model to simulate the pressure accumulation process of the high-voltage circuit breaker and obtain simulation results specifically includes: The area change sequences, gas parameters, and operating condition parameters are input into a preset arc model to calculate the energy input characteristics and mass input characteristics of the arc generated inside the high-voltage circuit breaker based on the operating condition parameters. Based on the area change sequences, gas parameters, energy input characteristics, and mass input characteristics, the pressure change curves of each characteristic volume during the pressure accumulation process of the high-voltage circuit breaker over time are calculated, and the simulation results are determined based on the curves. The characteristic volumes include heating volumes and compression volumes.

[0016] This method first calculates the energy and mass input characteristics of the electric arc based on operating parameters, then combines the area change sequence and gas parameters to obtain the pressure-time curves of the heating and compression volumes. Finally, the simulation results are determined based on these curves. This approach considers both the energy-driven effect of the electric arc on pressure and the influence of structural differences in different characteristic volumes on pressure distribution. By outputting the pressure-time curves, the pressure accumulation process is transformed into intuitive quantitative data, enabling structural optimization to accurately locate key structural parameters affecting pressure characteristics, fundamentally improving the accuracy of high-voltage circuit breaker structural optimization.

[0017] Secondly, an embodiment of the present invention provides an optimization device for the structure of a high-voltage circuit breaker, wherein the high-voltage circuit breaker includes contacts, a plug and a plurality of slits, and the optimization device includes a first module, a second module and a third module; The first module is used to acquire several relative position information of the contact and the plug, gas parameters and operating condition parameters of the high-voltage circuit breaker; The second module is used to input the relative position information of each contact into a preset contact dynamics model to obtain the radius change sequence of the throat of the contact relative to the plug. Based on the radius change sequence and the obtained slit structure parameters of the high-voltage circuit breaker, the area change sequence of gas flow in each slit is calculated. The area change sequence, the gas parameters and the operating condition parameters are input into a preset arc model to simulate the pressure accumulation process of the high-voltage circuit breaker and obtain simulation results. The third module is used to optimize the structure of the contact, the plug, and the slit based on the simulation results.

[0018] The first module collects several relative positional information points between the contacts and plug, as well as gas parameters and operating condition parameters of the high-voltage circuit breaker. This provides comprehensive and realistic data support for high-voltage circuit breaker optimization, ensuring accuracy from the outset. The second module utilizes a pre-defined contact dynamics model to transform the relative positional information into a throat radius variation sequence, more accurately reflecting the impact of contact movement on the airflow channel. This provides precise dynamic parameter input for subsequent pressure accumulation simulation, improving the reliability of the optimization basis. Based on the throat radius variation sequence and the obtained slit structure parameters of the high-voltage circuit breaker, calculations are performed... The total gas flow area change sequence was calculated, accurately capturing the correlation between contact dynamics and the slit flow channel, ensuring the accuracy of gas flow resistance calculation and providing precise guidance for optimization. The arc model integrates the area change sequence, gas parameters, and operating condition parameters to simulate the pressure accumulation process, outputting simulation results and providing accurate quantitative basis for subsequent optimization analysis. The third module optimizes the structure of contacts, plugs, and slits based on the quantitative model results, ensuring that the optimization of high-voltage circuit breakers is entirely based on realistic and reliable physical process simulation, fundamentally improving the accuracy of high-voltage circuit breaker optimization design.

[0019] Thirdly, another embodiment of the present invention provides a terminal device, including: a processor, a memory, a communication interface, and a communication bus, wherein the processor, the memory, and the communication interface communicate with each other through the communication bus; The memory is used to store at least one executable instruction that causes the processor to perform operations of an optimization method for a high-voltage circuit breaker structure.

[0020] Fourthly, another embodiment of the present invention provides a computer-readable storage medium including a stored computer program, wherein, when the computer program is executed, it controls the device or apparatus where the computer-readable storage medium is located to perform a method for optimizing the structure of a high-voltage circuit breaker.

[0021] Fifthly, another embodiment of the present invention provides a computer program product, including a computer program or instructions, which, when executed by a communication device, implements a method for optimizing the structure of a high-voltage circuit breaker. Attached Figure Description

[0022] To more clearly illustrate the technical solution of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1This is a flowchart illustrating an embodiment of a method for optimizing the structure of a high-voltage circuit breaker provided in this application; Figure 2 This is a flowchart illustrating steps S201 to S204 provided in this application; Figure 3 This is a schematic diagram of the geometric relationship between the internal contacts and plug of the high-voltage circuit breaker provided in this application, where the center of the arc at the top of the plug is located to the left of the starting point of the conical segment of the contact. Figure 4 This is a geometrical diagram illustrating the relative position information of the internal contacts and plug of the high-voltage circuit breaker provided in this application, which is equal to the second critical distance value. Figure 5 This is a flowchart illustrating steps S301 to S303 provided in this application; Figure 6 This is a schematic diagram of the geometric relationship between the contact fingers and the slit in the high-voltage circuit breaker provided in this application; Figure 7 This is a schematic diagram of the simulated and experimental measured values ​​of the arc-extinguishing chamber and the compressor chamber during no-load operation, as provided in this application. Figure 8 This is a schematic diagram of the simulated and experimentally measured pressure rise in the compressor chamber during a short-circuit current interruption provided in this application; Figure 9 This is a schematic diagram of the pressure rise curves of the fixed and dynamic contacts in the arc-extinguishing chamber and the compressor chamber volume during the no-load operation simulation provided in this application. Figure 10 This is a schematic diagram of the pressure rise curves in the arc-extinguishing chamber and the compressed air chamber under three contact movement conditions in the short-circuit current interruption simulation provided in this application; Figure 11 This is a schematic diagram of the structure of an optimized device for a high-voltage circuit breaker provided in this application. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0026] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0027] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0028] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0029] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0030] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0031] In the field of high-voltage circuit breaker technology, as the power grid evolves towards higher voltage levels, larger capacities, and greater intelligence, the performance of high-voltage circuit breakers, as core protection equipment, directly affects the safety of the power system. Existing lumped parameter optimization methods based on fixed geometric assumptions have significant shortcomings: on the one hand, they simplify the contact throat radius and slit flow area to constant values, completely ignoring the dynamic changes in the flow channel caused by contact movement, resulting in distorted pressure accumulation simulations; on the other hand, they fail to reflect the compression and release mechanisms of airflow affected by dynamic flow channels, leading to systematic deviations between the pressure prediction curve and reality, ultimately resulting in insufficient accuracy of the optimization results and making it difficult to achieve precise improvements in the performance of high-voltage circuit breakers.

[0032] See Figure 1 In order to improve the accuracy of high-voltage circuit breaker structure optimization, an embodiment of the present invention provides a method for optimizing the structure of a high-voltage circuit breaker, wherein the high-voltage circuit breaker includes contacts, plugs and a plurality of slits, and the method includes steps S101 to S103. Step S101: Obtain several relative position information of the contact and the plug, gas parameters and operating condition parameters of the high-voltage circuit breaker; In some embodiments, acquiring several relative position information of the contact and the plug, gas parameters of the high-voltage circuit breaker, and operating condition parameters specifically includes: using displacement sensors installed at the contact and plug movement mechanism of the high-voltage circuit breaker to collect axial relative position information of the contact and plug during the opening and closing process of the circuit breaker in real time. The relative position information is represented as the distance in the axial direction between the center of the arc at the top of the plug and the starting point of the conical segment of the contact, and data points are recorded at preset time intervals (e.g., 1ms) to obtain several relative position information covering the entire stage of contact closure, separation process, and complete separation; gas parameters are measured in real time by pressure and temperature sensors installed in the arc-extinguishing chamber (compression volume, CV) and the gas-compressing chamber (heating volume, HV) of the high-voltage circuit breaker, including gas velocity, gas pressure P, and temperature T, and gas density ρ is calculated based on a preset real gas state equation (ρ=f(P,T)); operating condition parameters are set according to a preset high-voltage circuit breaker operation mode, including but not limited to operation type (e.g., no-load operation or short-circuit current interruption), peak value of short-circuit current, and arcing time (e.g., 10.5ms).

[0033] Step S102: Input the relative position information of each contact into a preset contact dynamics model to obtain the radius change sequence of the throat of the contact relative to the plug. Based on the radius change sequence and the obtained slit structure parameters of the high-voltage circuit breaker, calculate the area change sequence of gas flow in each slit. Input the area change sequence, the gas parameters and the operating condition parameters into a preset arc model to simulate the pressure accumulation process of the high-voltage circuit breaker and obtain the simulation results. See Figure 2 In some embodiments, the step of inputting the relative position information of each of the contacts into a preset contact dynamics model to obtain the radius change sequence of the throat of the contact relative to the plug includes steps S201 to S204. Step S201: Obtain the cone angle, phase length, and top arc radius of the contact; In some embodiments, obtaining the cone angle, phase length, and top arc radius of the plug of the contact specifically includes: obtaining the cone angle, phase length, and top arc radius of the plug from the component measurement data of the high-voltage circuit breaker, wherein the cone angle is the cone angle of the cone-shaped cross section of the contact, the phase length is the axial length of the inner cone segment (phase portion) of the contact, and the top arc radius is the radius of the arc containing the circular outline of the top of the plug.

[0034] For further explanation, please refer to Figure 3 , Figure 3 This is a schematic diagram showing the geometric relationship between the internal contacts and plug of a high-voltage circuit breaker, with the center of the plug's arc located to the left of the starting point of the conical section of the contact. The upper half of the diagram represents the contact, exhibiting a structure with a conical angle; the lower half represents the plug, which is a cylinder with a radius of [missing information]. Its top is a rounded outline. The cone angle of the contact is the cone angle of the conical cross-section of the contact. The phase length of the contact is the axial length of the conical section (phase portion) inside the contact. The radius of the arc at the tip of the plug; The relative position information of the plug and the contact is determined by the axial distance between the center of the arc at the top of the plug and the starting point of the conical segment of the contact. The first distance is determined by the radial distance from the center of the top arc of the plug to the central axis of the contact. The radius of the contact throat; The first critical distance value represents the axial distance between the center of the plug tip arc and the starting point of the contact cone segment when the plug tip arc begins to form an effective contact constraint. The bottommost axial coordinate system (X-axis) is established with the starting point of the contact cone segment (the starting point of the phase length) as the origin (i.e., point 0), and is used to represent relative position information. In the case of the first critical distance value and the second critical distance value, the relative position information of the positive half axis, the first critical distance value and the second critical distance value are positive, and the relative position information of the negative half axis is negative.

[0035] Step S202: Based on the cone angle and the radius of the top arc, determine the first critical distance value between the plug and the contact; In some embodiments, determining a first critical distance value between the plug and the contact based on the cone angle and the radius of the tip arc specifically includes: calculating the first critical distance value using the cone angle and the radius of the tip arc. Figure 3 middle This is the first critical distance value.

[0036] In some embodiments, a formula for determining the first critical distance value between the plug and the contact, based on the cone angle and the radius of the apex arc, specifically includes: Formula for calculating the first critical distance value: ; In the formula, The cone angle of the contact; The radius of the arc at the tip of the plug; This is the first critical distance value.

[0037] Step S203: Based on the first critical distance value and the phase length, determine the second critical distance value between the plug and the contact, wherein the second critical distance value is greater than the first critical distance value; In some embodiments, a second critical distance value between the plug and the contact is determined based on the first critical distance value and the phase length, wherein the second critical distance value is greater than the first critical distance value. Specifically, this includes: calculating the second critical distance value between the plug and the contact by adding the first critical distance value and the phase length. Since the phase length is a fixed positive value, the second critical distance value is greater than the first critical distance value.

[0038] For further explanation, please refer to Figure 4 , Figure 4 This is a geometric diagram illustrating the relative position of the contacts and plug inside a high-voltage circuit breaker, where the distance is equal to the second critical distance. The left half of the diagram represents the contacts, which have a conical shape; the right half represents the plug, whose top is a rounded arc. The cone angle of the contact is the cone angle of the conical cross-section of the contact. The second critical distance value represents the axial distance between the center of the plug tip arc and the starting point of the contact cone segment when the contact point between the plug and the contact reaches the end of the phase length. This is the unit normal vector of the contact point between the inner surface of the contact and the plug; the figure shows the relative position information of the plug and the contact. Equal to the second critical distance value The position of the plug and the contact point is the point at which the phase length ends.

[0039] In some embodiments, a formula for determining the second critical distance value between the plug and the contact, based on the first critical distance value and the phase length, specifically includes: Formula for calculating the second critical distance value: ; In the formula, This is the first critical distance value; The phase length of the contact; This is the second critical distance value.

[0040] Step S204: Based on the relative position information, the first critical distance value, and the second critical distance value, calculate the radius change sequence of the throat of the contact relative to the plug.

[0041] See Figure 5 In some embodiments, the step of calculating the radius change sequence of the throat of the contact relative to the plug based on each of the relative position information, the first critical distance value and the second critical distance value includes steps S301 to S303. Step S301: If the relative position information is less than a preset threshold, then the first radius of the throat of the contact is calculated based on the top arc radius and the obtained first distance, wherein the first distance is determined by the radial distance from the center of the top arc of the plug to the axis of the contact. In some embodiments, if the relative position information is less than a preset threshold, the first radius of the throat of the contact is calculated based on the radius of the top arc and the obtained first distance. The first distance is determined by the radial distance from the center of the top arc of the plug to the axis of the contact. Specifically, this includes: first, setting a preset threshold (e.g., setting it to 0), and then determining whether each relative position information is less than the preset threshold. If it is less, it indicates that the center of the top arc of the plug is located to the left of the starting point of the cone segment of the contact (the starting point of the phase length). At this time, the plug and the contact do not form an effective contact constraint, and the relative position information is negative, i.e., corresponding to... Figure 3 In this case, the contact throat radius is in an initial stable state, and the first radius of the contact throat can be calculated directly using the tip arc radius and the first distance determined by the radial offset of the plug tip arc center relative to the contact axis.

[0042] In some embodiments, if the relative position information is less than a preset threshold, the first radius of the throat of the contact is calculated based on the radius of the top arc and the obtained first distance, wherein the first distance is determined by a formula related to the radial distance from the center of the top arc of the plug to the axis of the contact, specifically including: The formula for calculating the first radius is: ; In the formula, This is the first distance; The first radius of the contact throat; The radius of the arc at the tip of the plug.

[0043] It should be noted that the inner diameter of the contact throat... It is dynamically defined by the separation of electrical contact between the plug and the contact; the separation of electrical contact is defined as the moment when the plug and the contact lose contact, which is the moment when the high-voltage circuit breaker forms an electric arc in the case of current interruption.

[0044] Step S302: If the relative position information is greater than or equal to the preset threshold, then based on the first critical distance value, the second critical distance value, the first distance, the top arc radius, the cone angle and the phase length, the second radius, the third radius and the fourth radius of the throat of the contact are calculated. In some embodiments, if the relative position information is greater than or equal to the preset threshold, the specific steps include: comparing each relative position information with the preset threshold (e.g., set to 0); if the relative position information is greater than or equal to the preset threshold, then performing subsequent calculation steps for the second, third, and fourth radii of the contact throat.

[0045] In some embodiments, calculating the second radius, third radius, and fourth radius of the throat of the contact based on the first critical distance value, the second critical distance value, the first distance, the tip arc radius, the cone angle, and the phase length specifically includes: if the relative position information is less than or equal to the first critical distance value, then calculating the second radius of the throat of the contact based on a first constraint relationship, wherein the first constraint relationship is determined by the first distance, the tip arc radius, and the relative position information; if the relative position information is greater than the first critical distance value and less than or equal to the second critical distance value, then calculating the third radius of the throat of the contact based on a second constraint relationship, wherein the second constraint relationship is determined by the relative position information and the cone angle; if the relative position information is greater than the second critical distance value, then calculating the fourth radius of the throat of the contact based on a third constraint relationship, wherein the third constraint relationship is determined by the relative position information, the phase length, the cone angle, the first distance, and the tip arc radius. Specifically, if the relative position information is less than or equal to the first critical distance value, then the second radius of the contact throat is calculated based on the first constraint relationship determined by the first distance, the top arc radius, and the relative position information; if the relative position information is greater than the first critical distance value and less than or equal to the second critical distance value, that is, corresponding to... Figure 4 If the first critical distance value is equal to the second critical distance value, then the third radius of the corresponding contact throat is calculated based on the second constraint relationship determined by the relative position information and the cone angle; if the relative position information is greater than the second critical distance value, then the fourth radius of the corresponding contact throat is calculated based on the third constraint relationship determined by the relative position information, phase length, cone angle, first distance and top arc radius.

[0046] In some embodiments, the formulas for calculating the second radius, third radius, and fourth radius of the throat of the contact based on the first critical distance value, the second critical distance value, the first distance, the top arc radius, the cone angle, and the phase length specifically include: First constraint relationship: ; ; ; In the formula, This is the first distance; The second radius of the contact throat; The radius of the arc at the tip of the plug; This is relative position information; The rate of change of the second radius; The rate of change of relative position information; Second constraint relationship: ; ; In the formula, The rate of change of relative position information; The rate of change of the third radius of the contact throat; The cone angle of the contact; It is the unit normal vector of the contact point between the inner surface of the contact and the plug; Third constraint relationship: ; ; In the formula, This is the first distance; The fourth radius of the contact throat; The radius of the arc at the tip of the plug; This is relative position information; The rate of change of the fourth radius of the contact throat; The rate of change of relative position information; The cone angle of the contact; The phase length of the contact.

[0047] By employing differentiated constraint relationships to calculate the corresponding contact throat radius for different relative position intervals, each constraint relationship focuses on the core influencing parameters of the corresponding interval, avoiding calculation deviations caused by parameter redundancy or missing key parameters. This ensures that the throat radius calculation for each interval has clear physical logic support, significantly improving the accuracy of the radius change sequence and providing precise quantitative basis for structural optimization.

[0048] Step S303: Based on the first radius, the second radius, the third radius, and the fourth radius, determine the radius change sequence of the throat of the contact relative to the plug.

[0049] In some embodiments, determining the radius change sequence of the throat of the contact relative to the plug based on the first radius, the second radius, the third radius, and the fourth radius specifically includes: sorting the first radius, the second radius, the third radius, and the fourth radius calculated based on each relative position information according to the chronological order of the acquisition of relative position information, to obtain the radius change sequence of the contact throat over time.

[0050] Based on the correspondence between relative position information and preset thresholds and critical distance values, the contact throat radius is calculated for different stages in different scenarios. This division method not only considers the initial state when the plug is not in contact, but also accurately captures the radius change characteristics when different critical distance values ​​are switched during the contact process. It avoids the defect that a single calculation model cannot adapt to the entire motion process, and makes the throat radius change sequence more in line with the actual physical motion law, thereby enhancing the accuracy of high-voltage circuit breaker structure optimization.

[0051] By obtaining the contact cone angle, phase length, and top arc radius of the plug, and using these parameters to divide the first and second critical distance values, a precise geometric constraint framework is established for the dynamic calculation of the contact throat radius. This allows the relative motion between the contact and the plug to be decomposed into characteristic positions at different stages, avoiding the ambiguity in radius calculation caused by neglecting the division of contact stages in traditional models. This ensures that the derivation of the subsequent radius change sequence has clear physical boundary support, improving the accuracy of subsequent structural optimization.

[0052] In some embodiments, calculating the area change sequence of gas flow in each slit based on the radius change sequence and the obtained slit structure parameters of the high-voltage circuit breaker specifically includes: calculating a number of radius changes within a preset time period based on the radius change sequence and a preset radius reference value; calculating a number of variable throat bottom edge lengths based on each radius change and the slit structure parameters; and calculating the area change sequence of gas flow in each slit based on each variable throat bottom edge length and the slit structure parameters. Specifically, the initial throat radius of the contact before deformation is set as the baseline radius value. For each value in the radius change sequence, its deviation from the baseline value is calculated, i.e., the radius change amount. The slit structure parameters include the number of slits, the fixed base length of each slit at the root end of the contact finger, the axial length of the slit, and the slit half-angle. Then, based on the fixed base length, the radius change amount, and the slit half-angle, the variable base length of each slit at the throat end is calculated. Next, each slit is approximated as a trapezoid, and its area is half the sum of the fixed base length and the variable base length multiplied by the height (i.e., the axial length of the slit), to obtain the instantaneous flow area of ​​a single slit. Finally, this area is multiplied by the total number of slits to obtain the total gas flow area of ​​all slits at that moment. This calculation is repeated for all time points to obtain the area change sequence of the total gas flow area of ​​all slits over time.

[0053] For further explanation, please refer to Figure 6 , Figure 6 This is a schematic diagram illustrating the geometric relationship between the contact fingers and the slit in a high-voltage circuit breaker. It shows the correlation between the change in the contact throat radius and the slit flow channel size, and is an axial view of a plane passing through the contact throat. The slit half-angle is the angle between the slit axis and the contact finger axis; This represents the change in the radius of the contact throat, indicating the real-time change in the throat radius during the movement of the contact and plug. The fixed half-base length of the slit at the base of the finger.

[0054] In some embodiments, the formula for calculating the area change sequence of gas flow in each slit based on the radius change sequence and the obtained slit structure parameters of the high-voltage circuit breaker specifically includes: ; ; ; ; In the formula, This represents the change in radius; This is one of the radius values ​​in the radius variation sequence; The radius is the baseline value; The base length is variable; This refers to the number of slits; To fix the base length; The axial length of the slit; It is the half angle of the slit; This represents the total gas flow area.

[0055] By deriving the radius change, the variable bottom length of the throat, and the flow area of ​​the slit, a precise correlation was established between the contact dynamics and the slit flow channel. This process transforms the abstract radius change into specific flow channel geometric parameters, fully combining the slit structural characteristics and avoiding the disconnect from the actual structure caused by directly assuming the flow channel area in traditional methods. By calculating the area change sequence of each slit, the dynamic influence of contact movement on gas flow resistance was accurately captured, providing key support for the reliability of subsequent pressure accumulation simulation and thus improving the accuracy of structural optimization.

[0056] In some embodiments, the step of inputting the area change sequences, gas parameters, and operating condition parameters into a preset arc model to simulate the pressure accumulation process of the high-voltage circuit breaker and obtain simulation results specifically includes: inputting the area change sequences, gas parameters, and operating condition parameters into a preset arc model to calculate the energy input characteristics and mass input characteristics of the arc generated within the high-voltage circuit breaker based on the operating condition parameters; and calculating the pressure change curves of each characteristic volume over time during the pressure accumulation process of the high-voltage circuit breaker based on the area change sequences, gas parameters, energy input characteristics, and mass input characteristics, to determine the simulation results based on the curves, wherein the characteristic volumes include heating volumes and compression volumes.

[0057] Specifically, the short-circuit current and arcing time from the operating conditions are first input into the arc model. Ohm's law is used to calculate the real-time voltage of the arc, and the arc power, i.e., the energy input characteristic, is obtained by combining the current, which is reflected as the heat transferred to the arc-extinguishing chamber per unit time. At the same time, based on the surface ablation model of the arc and combined with the material properties of the contacts and plug, the change law of the mass of the gas generated by ablation over time is calculated, i.e., the mass input characteristic. Then, the slit gas flow area corresponding to the area change sequence, the density of the gas parameters, and the energy input and mass input characteristics are substituted into the mass conservation and energy conservation equations. The heating volume HV (the area directly heated by the arc) and the compression volume CV (the area where the gas is compressed) are solved in a coupled manner. The gas mass flow rate between the two volumes is calculated by the flow channel area, and the temperature within the volume is updated by combining the energy input characteristics. Finally, the continuous curves of the pressure change over time in the heating volume and the compression volume during the entire pressure accumulation process are obtained.

[0058] In some embodiments, the step of inputting the area change sequences, the gas parameters, and the operating condition parameters into a preset arc model to simulate the pressure accumulation process of the high-voltage circuit breaker and obtain relevant formulas for the simulation results specifically includes: mass conservation equation: ; In the formula, It is the density of the gas; It is the gas velocity vector; For time; This is a divergence operator used to describe the spatial divergence of mass; Momentum conservation equation: ; In the formula, It is the density of the gas; It is the gas velocity vector; For time; This refers to gas pressure; This represents the gas pressure gradient, i.e., the rate of change of pressure in space. Energy equation: ; In the formula, It is the density of the gas; It is the gas velocity vector; For time; This refers to gas pressure; Current density; electric field strength The radiation coefficient; Specific enthalpy of a gas; It is a divergence operator; For gas velocity; Ohm's Law: ; In the formula, It is the arc voltage; The current is the arc current; constant means a constant, indicating that the voltage gradient of the arc is a fixed value.

[0059] For example, the accuracy of the simulation results needs to be verified by experimental data. The simulation process is configured with two operating scenarios: a short-circuit current interruption scenario and an no-load operation scenario. For the short-circuit current interruption scenario, a peak current of 61.8kA, a frequency of 60Hz, and an arcing time of 10.5ms are set. For the no-load operation scenario, the pressure rise of the compressor chamber (HV) and the arc-extinguishing chamber (CV) are calculated for two scenarios. One scenario is a fixed contact structure, where the contact throat radius is equal to the plug cylinder radius. = One type is called a fixed contact, and the other is a dynamic contact structure, in which the inner diameter of the contact throat is defined by the plug shape before contact separation, and returns to the rated nominal radius after contact separation, which is called the nominal contact NL.

[0060] See Figure 7 , Figure 7This is a schematic diagram showing the simulated and experimental measured values ​​of the arc-extinguishing chamber and the compressor chamber during no-load operation. The vertical axis represents gas pressure (in AU), and the horizontal axis represents time. The solid blue line (labeled HV, nominal tulip NL) represents the simulated pressure curve of the compressor chamber (HV) under the nominal contact scenario during no-load operation. The dashed blue line (labeled CV, nominal tulip NL) represents the simulated pressure curve of the arc-extinguishing chamber (CV) under the nominal contact scenario during no-load operation. The solid black line (labeled HV, exp.) represents the experimental measured pressure curve of the compressor chamber (HV) during no-load operation, and the dashed black line (labeled CV, exp.) represents the experimental measured pressure curve of the arc-extinguishing chamber (CV) during no-load operation. The diagram shows that the simulated curves and experimental data agree well.

[0061] See Figure 8 , Figure 8 This is a schematic diagram of the simulated and experimentally measured pressure rise in the compressor chamber during a short-circuit current interruption scenario. In the short-circuit current interruption scenario, the left vertical axis represents gas pressure (unit: AU), the right vertical axis represents short-circuit current (unit: A), and the bottom horizontal axis represents time. The blue solid line (labeled HV, nominal tulip SC) represents the simulated curve of pressure change in the compressor chamber (HV) over time under the nominal contact SC scheme (i.e., the contact pointer expands first due to pressure during arc ignition and then returns to a fixed half-bottom length h=0). The black solid line (labeled HV, exp.) represents the experimentally measured pressure in the compressor chamber (HV), and the dashed line (labeled Current) represents the short-circuit current change curve. As can be seen from the figure, when the short-circuit current peak occurs, the compressor chamber pressure rises rapidly to the peak value, and the trends of the simulated and experimental curves closely match.

[0062] See Figure 9 , Figure 9This diagram illustrates the pressure rise curves in the arc-extinguishing chamber and compressor chamber volumes of a fixed contact and a dynamic contact (with preset motion) during no-load operation simulation. The vertical axis represents gas pressure (in Au), and the horizontal axis represents time. The solid blue line (labeled HV, nominal tulip NL) represents the simulated pressure curve of the compressor chamber (HV) in the dynamic contact (nominal contact NL) scheme under no-load operation. The dashed blue line (labeled CV, nominal tulip NL) represents the simulated pressure curve of the arc-extinguishing chamber (CV) in the dynamic contact (nominal contact NL) scheme under no-load operation. The solid red line (labeled HV, fixed tulip) represents the simulated pressure curve of the compressor chamber (HV) in the fixed contact scheme under no-load operation. The dashed red line (labeled CV, fixed tulip) represents the simulated pressure curve of the arc-extinguishing chamber (CV) in the fixed contact scheme under no-load operation. The solid black line (labeled HV, exp.) represents the experimentally measured pressure curve of the compressor chamber (HV) under no-load operation. The figure (exp.) represents the experimentally measured pressure curve of the arc-extinguishing chamber (CV) under no-load operation. Under no-load operation, contact movement is disabled and the contact structure is fixed (the contact radius remains constant throughout the simulation). This figure shows the pressure rise curves under static (fixed contact) and dynamic (standard contact NL) scenarios. As expected, the pressure rise curves of the compressed air chamber and the arc chamber are completely consistent in both scenarios before contact separation occurs 14 milliseconds later. After contact separation, the peak pressure under the dynamic contact condition is 15% higher than that under the fixed contact condition. In addition, the pressure decay rate is faster when the contact maintains its initial radius.

[0063] See Figure 10 , Figure 10This diagram illustrates the pressure rise curves of the arc-extinguishing chamber and the compressed air chamber under three contact movement conditions in a short-circuit current interruption simulation. In this scenario, the peak pressure is 61.8 kA, the frequency is 60 Hz, and the arc duration is 10.5 ms. The horizontal axis represents time, the left vertical axis represents gas pressure (in Au), and the right vertical axis represents short-circuit current (in A). The solid blue line (labeled HV, closed tulip) represents the pressure simulation curve of the compressed air chamber (HV) under the closed contact scheme, and the dashed blue line (labeled CV, closed tulip) represents the pressure simulation curve of the arc-extinguishing chamber (CV) under the closed contact scheme. The solid black line (labeled HV, fixed tulip) represents the pressure simulation curve of the compressed air chamber (HV) under the fixed contact scheme, and the dashed black line (labeled CV, fixed tulip) represents the pressure simulation curve of the arc-extinguishing chamber (CV) under the fixed contact scheme. The solid red line (labeled HV, nominal tulip SC) represents the pressure simulation curve of the compressed air chamber (HV) under the nominal contact (SC) scheme in the short-circuit scenario, and the dashed red line (labeled CV, nominal tulip) represents the pressure simulation curve of the compressed air chamber (HV) under the nominal contact (SC) scheme in the short-circuit scenario. The figure shows the simulated pressure curve of the arc-extinguishing chamber (CV) under the nominal contact (SC) scheme in a short-circuit scenario; the solid green line (labeled HV, exp.) represents the experimentally measured pressure curve of the compressor chamber (HV); and the dashed white line (labeled Current) represents the curve of short-circuit current variation. This figure illustrates the calculated pressure rise under three different motion scenarios during short-circuit current interruption operation. The three scenarios are: fixed contact, contact pointer expanding initially due to pressure during arc ignition and then returning to the nominal radius (referred to as the nominal contact under short-circuit conditions), and contact pointer expanding initially due to pressure during arc ignition and then returning to h=0. The maximum peak pressure is observed when the contact radius is at its minimum (i.e., closed contact). Compared to the fixed contact and standard contact short-circuit conditions, the maximum pressure of the compressor chamber decreases by 15% and 2%, respectively. It is also noted that the dynamic characteristics of the contact have no significant effect on the pressure rise of the arc-extinguishing chamber.

[0064] This method first calculates the energy and mass input characteristics of the electric arc based on operating parameters, then combines the area change sequence and gas parameters to obtain the pressure-time curves of the heating and compression volumes. Finally, the simulation results are determined based on these curves. This approach considers both the energy-driven effect of the electric arc on pressure and the influence of structural differences in different characteristic volumes on pressure distribution. By outputting the pressure-time curves, the pressure accumulation process is transformed into intuitive quantitative data, enabling structural optimization to accurately locate key structural parameters affecting pressure characteristics, fundamentally improving the accuracy of high-voltage circuit breaker structural optimization.

[0065] Step S103: Optimize the structure of the contact, the plug, and the slit based on the simulation results; In some embodiments, the structure of the contact, the plug, and the slit is optimized based on the simulation results. Specifically, this includes: analyzing the pressure-time curves in the simulation results, focusing on whether the peak pressure and pressure rise rate of the heating volume (HV) and compression volume (CV) meet the design requirements of the high-voltage circuit breaker (e.g., the peak pressure needs to meet arc extinguishing requirements, and the pressure rise rate needs to avoid equipment damage); and comparing the pressure accumulation differences under different contact throat radius variation scenarios and different slit flow area scenarios. For the contact structure, if the peak pressure is insufficient, [further optimization is needed]. To increase the variation in the contact throat radius at a specific relative position, reduce the contact cone angle or adjust the phase length to optimize the flow channel area's effect on pressure increase. If the pressure rises too quickly, adjust in the opposite direction. For plug structures, adjust the top arc radius or the radial distance from the top arc center to the axis to change the constraint relationship of the contact throat radius, making pressure accumulation more in line with design expectations. For slit structures, if excessive gas flow resistance leads to excessively high pressure, increase the number of slits, lengthen the length of a single slit, or increase the slit tilt angle. If the pressure rise is insufficient, reduce the slit size-related parameters.

[0066] It should be noted that changing the slit structure can alter the effective cross-sectional area of ​​the airflow. According to fluid mechanics, increasing the flow area reduces the flow resistance, which is beneficial for high-pressure gas to flow from HV to CV.

[0067] By collecting relative position information of the contacts and plugs, gas parameters of the high-voltage circuit breaker, and operating condition parameters, comprehensive and realistic data support is provided for the optimization of the high-voltage circuit breaker, ensuring the accuracy of the optimization from the source. Based on a pre-set contact dynamics model, the relative position information is transformed into a throat radius change sequence, which more realistically reflects the impact of contact movement on the airflow channel, providing accurate dynamic parameter input for subsequent pressure accumulation simulation and improving the reliability of the optimization basis. Based on the throat radius change sequence and the obtained slit structure parameters of the high-voltage circuit breaker, the total gas flow area change sequence is calculated, accurately capturing the correlation between contact dynamics and the slit flow channel, ensuring the accuracy of gas flow resistance calculation and providing precise guidance for the optimization direction. The arc model integrates the area change sequence, gas parameters, and operating condition parameters to simulate the pressure accumulation process, outputting simulation results and providing accurate quantitative basis for subsequent optimization analysis. Based on the quantified model results, the structure of the contacts, plugs, and slits is optimized, ensuring that the optimization of the high-voltage circuit breaker is entirely based on realistic and reliable physical process simulation, fundamentally improving the accuracy of the high-voltage circuit breaker optimization design. This application can improve the accuracy of high-voltage circuit breaker optimization.

[0068] See Figure 11 Based on the above method embodiments, corresponding device embodiments are provided; One embodiment of the present invention provides an optimization device for the structure of a high-voltage circuit breaker, wherein the high-voltage circuit breaker includes contacts, a plug and a plurality of slits, and the optimization device includes a first module 100, a second module 200 and a third module 300; The first module 100 is used to acquire several relative position information of the contact and the plug, gas parameters and operating condition parameters of the high-voltage circuit breaker; The second module 200 is used to input the relative position information of each of the above into a preset contact dynamics model to obtain the radius change sequence of the throat of the contact relative to the plug. Based on the radius change sequence and the obtained slit structure parameters of the high-voltage circuit breaker, the area change sequence of gas flow in each of the slits is calculated. The area change sequence, the gas parameters and the operating condition parameters are input into a preset arc model to simulate the pressure accumulation process of the high-voltage circuit breaker and obtain simulation results. The third module 300 is used to optimize the structure of the contact, the plug, and the slit based on the simulation results.

[0069] The first module collects several relative positional information points between the contacts and plug, as well as gas parameters and operating condition parameters of the high-voltage circuit breaker. This provides comprehensive and realistic data support for high-voltage circuit breaker optimization, ensuring accuracy from the outset. The second module utilizes a pre-defined contact dynamics model to transform the relative positional information into a throat radius variation sequence, more accurately reflecting the impact of contact movement on the airflow channel. This provides precise dynamic parameter input for subsequent pressure accumulation simulation, improving the reliability of the optimization basis. Based on the throat radius variation sequence and the obtained slit structure parameters of the high-voltage circuit breaker, calculations are performed... The total gas flow area change sequence was calculated, accurately capturing the correlation between contact dynamics and the slit flow channel, ensuring the accuracy of gas flow resistance calculation and providing precise guidance for optimization. The arc model integrates the area change sequence, gas parameters, and operating condition parameters to simulate the pressure accumulation process, outputting simulation results and providing accurate quantitative basis for subsequent optimization analysis. The third module optimizes the structure of contacts, plugs, and slits based on the quantitative model results, ensuring that the optimization of high-voltage circuit breakers is entirely based on realistic and reliable physical process simulation, fundamentally improving the accuracy of high-voltage circuit breaker optimization design.

[0070] It is understood that the above-described device embodiments correspond to the method embodiments of the present invention, and can realize the optimization method of high-voltage circuit breaker structure provided by any of the above-described method embodiments of the present invention.

[0071] It should be noted that the device embodiments described above are merely illustrative, and some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Furthermore, in the accompanying drawings of the device embodiments provided by this invention, the connection relationships between modules indicate that they have communication connections, which can specifically be implemented as one or more communication buses or signal lines. Those skilled in the art can understand and implement this without any creative effort.

[0072] Based on the above-described embodiment of the optimization method for a high-voltage circuit breaker structure, another embodiment of the present invention provides a terminal device, which includes a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor. When the processor executes the computer program, it implements the optimization method for a high-voltage circuit breaker structure according to any embodiment of the present invention.

[0073] For example, in this embodiment, the computer program can be divided into one or more modules, which are stored in the memory and executed by the processor to complete the present invention. The one or more modules may be a series of computer program instruction segments capable of performing a specific function, which describe the execution process of the computer program in the terminal device.

[0074] The terminal device may be a desktop computer, laptop, handheld computer, or cloud server, etc. The terminal device may include, but is not limited to, a processor and a memory.

[0075] The processor can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor can be a microprocessor or any conventional processor. The processor is the control center of the terminal device, connecting all parts of the terminal device via various interfaces and lines.

[0076] Based on the above-described method embodiments, another embodiment of the present invention provides a computer-readable storage medium including a stored computer program, wherein, when the computer program is executed, it controls the device where the computer-readable storage medium is located to execute the optimization method for a high-voltage circuit breaker structure described in any of the above-described method embodiments of the present invention.

[0077] The modules / units integrated in the device / terminal equipment, if implemented as software functional units and sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the above embodiments of the present invention can also be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include: any entity or device capable of carrying the computer program code, a recording medium, a USB flash drive, a portable hard drive, a magnetic disk, an optical disk, a computer memory, a read-only memory (ROM), a random access memory (RAM), an electrical carrier signal, a telecommunication signal, and a software distribution medium, etc.

[0078] Based on the above-described method embodiments, another embodiment of the present invention provides a computer program product, including a computer program or instructions, which, when executed by a communication device, implements a method for optimizing the structure of a high-voltage circuit breaker.

[0079] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A method for optimizing the structure of a high-voltage circuit breaker, characterized in that, The high-voltage circuit breaker includes contacts, a plug, and several slits; the method includes: Acquire several relative position information of the contact and the plug, as well as the gas parameters and operating condition parameters of the high-voltage circuit breaker; The relative position information of each contact is input into a preset contact dynamics model to obtain the radius change sequence of the throat of the contact relative to the plug. Based on the radius change sequence and the obtained slit structure parameters of the high-voltage circuit breaker, the area change sequence of gas flow in each slit is calculated. The area change sequence, the gas parameters and the operating condition parameters are input into a preset arc model to simulate the pressure accumulation process of the high-voltage circuit breaker and obtain simulation results. The structure of the contact, the plug, and the slit is optimized based on the simulation results.

2. The method for optimizing the structure of a high-voltage circuit breaker as described in claim 1, characterized in that, The step of inputting the relative position information of each contact into a preset contact dynamics model to obtain the radius change sequence of the throat of the contact relative to the plug specifically includes: Obtain the cone angle, phase length, and tip radius of the plug of the contact; Based on the cone angle and the radius of the top arc, a first critical distance value between the plug and the contact is determined; Based on the first critical distance value and the phase length, a second critical distance value between the plug and the contact is determined, wherein the second critical distance value is greater than the first critical distance value; Based on the relative position information, the first critical distance value, and the second critical distance value, the radius change sequence of the throat of the contact relative to the plug is calculated.

3. The method for optimizing the structure of a high-voltage circuit breaker as described in claim 2, characterized in that, The step of calculating the radius change sequence of the throat of the contact relative to the plug based on the relative position information, the first critical distance value, and the second critical distance value specifically includes: If the relative position information is less than a preset threshold, then the first radius of the throat of the contact is calculated based on the top arc radius and the obtained first distance, wherein the first distance is determined by the radial distance from the center of the top arc of the plug to the axis of the contact; If the relative position information is greater than or equal to the preset threshold, then based on the first critical distance value, the second critical distance value, the first distance, the top arc radius, the cone angle, and the phase length, the second radius, the third radius, and the fourth radius of the throat of the contact are calculated. Based on the first radius, the second radius, the third radius, and the fourth radius, a sequence of radius changes of the throat of the contact relative to the plug is determined.

4. The method for optimizing the structure of a high-voltage circuit breaker as described in claim 3, characterized in that, The calculation of the second radius, third radius, and fourth radius of the throat of the contact, based on the first critical distance value, the second critical distance value, the first distance, the top arc radius, the cone angle, and the phase length, specifically includes: If the relative position information is less than or equal to the first critical distance value, then the second radius of the throat of the contact is calculated based on the first constraint relationship, wherein the first constraint relationship is determined by the first distance, the top arc radius and the relative position information; If the relative position information is greater than the first critical distance value and less than or equal to the second critical distance value, then the third radius of the throat of the contact is calculated based on the second constraint relationship, wherein the second constraint relationship is determined by the relative position information and the cone angle; If the relative position information is greater than the second critical distance value, then the fourth radius of the throat of the contact is calculated based on the third constraint relationship, wherein the third constraint relationship is determined by the relative position information, the phase length, the cone angle, the first distance and the top arc radius.

5. The method for optimizing the structure of a high-voltage circuit breaker as described in claim 1, characterized in that, Based on the radius change sequence and the obtained slit structure parameters of the high-voltage circuit breaker, the area change sequence of gas flow in each slit is calculated, specifically including: Based on the radius change sequence and the preset radius reference value, several radius changes within a preset time period are calculated; Based on the radius changes and the slit structure parameters, several variable bottom edge lengths of the throat are calculated. Based on the variable base length of each throat and the slit structure parameters, the area change sequence of gas flow in each slit is calculated.

6. The method for optimizing the structure of a high-voltage circuit breaker as described in claim 1, characterized in that, The step of inputting the area change sequences, gas parameters, and operating condition parameters into a preset arc model to simulate the pressure accumulation process of the high-voltage circuit breaker and obtain simulation results specifically includes: The area change sequences, gas parameters, and operating condition parameters are input into a preset arc model to calculate the energy input characteristics and mass input characteristics of the arc generated inside the high-voltage circuit breaker based on the operating condition parameters. Based on the area change sequences, gas parameters, energy input characteristics, and mass input characteristics, the pressure change curves of each characteristic volume during the pressure accumulation process of the high-voltage circuit breaker over time are calculated, and the simulation results are determined based on the curves. The characteristic volumes include heating volumes and compression volumes.

7. An optimization device for the structure of a high-voltage circuit breaker, characterized in that, The high-voltage circuit breaker includes contacts, a plug, and several slits; the optimization device includes a first module, a second module, and a third module. The first module is used to acquire several relative position information of the contact and the plug, gas parameters and operating condition parameters of the high-voltage circuit breaker; The second module is used to input the relative position information of each contact into a preset contact dynamics model to obtain the radius change sequence of the throat of the contact relative to the plug. Based on the radius change sequence and the obtained slit structure parameters of the high-voltage circuit breaker, the area change sequence of gas flow in each slit is calculated. The area change sequence, the gas parameters and the operating condition parameters are input into a preset arc model to simulate the pressure accumulation process of the high-voltage circuit breaker and obtain simulation results. The third module is used to optimize the structure of the contact, the plug, and the slit based on the simulation results.

8. A terminal device, characterized in that, include: The processor, memory, communication interface, and communication bus are provided, wherein the processor, memory, and communication interface communicate with each other via the communication bus. The memory is used to store at least one executable instruction that causes the processor to perform the operation of the optimization method for the high-voltage circuit breaker structure as described in any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a stored computer program, wherein, when the computer program is executed, it controls the device or apparatus containing the computer-readable storage medium to perform the optimization method for the high-voltage circuit breaker structure as described in any one of claims 1 to 6.

10. A computer program product, comprising a computer program or instructions, characterized in that, When the computer program or instructions are executed by the communication device, the method for optimizing the high-voltage circuit breaker structure as described in any one of claims 1 to 6 is implemented.

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