Method, apparatus and medium for determining anode sheath length of an arc model

Abstract

The application discloses a method, device, equipment and medium for determining an anode sheath length of an arc model. The method comprises the following steps: in the first step, a first arc root radius is determined according to a current density output by a first arc generation model; in the second step, a second arc root radius is determined according to the first arc root radius and a second arc generation model, wherein an input parameter of the second arc generation model comprises a first anode sheath length; and in the third step, the anode sheath length is determined according to the first arc root radius and the second arc root radius. By determining the anode sheath length, the application is beneficial to solving the problem of slow solving speed and non-convergence of arc model simulation calculation, thereby being beneficial to establishing a more accurate arc simulation model.

Description

Technical Field

[0001] This invention relates to the field of electric arc simulation technology, and in particular to a method, apparatus, equipment and medium for determining the length of the anode sheath layer in an electric arc model. Background Technology

[0002] The electric arc is mainly composed of the cathode sheath region, the arc column region, and the anodic sheath region. The arc column region consists of charged particles (ions and electrons) and neutral particles, and has no space charge; it can be considered a quasi-neutral plasma in thermal equilibrium. The sheath region is mainly a thin layer between the metal surface and the arc column, with a width of approximately one to several electron free paths. Near the anodic sheath region, a large number of electrons accumulate, forming a negative space charge region. Non-equilibrium effects (collision ionization, thermal ionization, etc.) also occur in this region, forming charged particles. These charged particles undergo bipolar diffusion through the sheath, generating conductivity. This region does not satisfy local thermodynamic equilibrium; therefore, it needs to be analyzed separately when simulating and modeling it.

[0003] When simulating an electric arc model, the arc does not maintain local thermodynamic equilibrium within the anode sheath, thus requiring a separate simulation region. Within the anode sheath simulation region, its physical properties and parameter settings differ from those of the arc column region. Due to the extremely small volume of the anode sheath, simulating the arc model inevitably results in extremely fine mesh parameters. Therefore, if the anode sheath is too long, it will lead to excessive computational load and convergence issues. Summary of the Invention

[0004] This invention provides a method, apparatus, device, and medium for determining the length of the anode sheath in an electric arc model. This method can determine a suitable anode sheath length, thereby helping to solve the problems of slow solution speed and non-convergence in electric arc model simulation calculations.

[0005] In a first aspect, embodiments of the present invention provide a method for determining the length of the anode sheath layer of an electric arc model, comprising: a first step of determining a first arc root radius based on the current density output by a first electric arc generating model; a second step of determining a second arc root radius based on the first arc root radius and a second electric arc generating model; wherein the input parameters of the second electric arc generating model include the length of the first anode sheath layer; and a third step of determining the length of the anode sheath layer based on the first arc root radius and the second arc root radius.

[0006] Optionally, determining the first arc root radius based on the current density output by the first arc generating model includes: inputting current parameters into the first arc generating model to make the first arc generating model output current density; determining the distribution of arc micro-elements based on the current density; and determining the first arc root radius based on the distribution of arc micro-elements.

[0007] Optionally, determining the second arc root radius based on the first arc root radius and the second arc generation model includes: determining the length of the first anode sheath based on the first arc root radius; and inputting the length of the first anode sheath into the second arc generation model to determine the second arc root radius.

[0008] Optionally, determining the anode sheath length based on the first arc root radius and the second arc root radius includes: determining whether the relative error between the first arc root radius and the second arc root radius is less than a set threshold; if so, determining that the anode sheath length is twice the first arc root radius or twice the second arc root radius.

[0009] Optionally, after determining whether the relative error between the first arc root radius and the second arc root radius is less than a set threshold, the method further includes: if not, updating the first arc root radius to the second arc root radius, and continuing to execute the second and third steps.

[0010] Optionally, before determining the first arc root radius based on the current density output by the first arc generation model, the process includes: establishing a first arc generation model and a second arc generation model.

[0011] Secondly, embodiments of the present invention provide a device for determining the length of the anode sheath of an electric arc model, comprising: a first arc root radius determining unit, configured to determine the first arc root radius based on the current density output by a first electric arc generating model; a second arc root radius determining unit, configured to determine the second arc root radius based on the first arc root radius and a second electric arc generating model; and an anode sheath length determining unit, configured to determine the length of the anode sheath based on the relative error between the first arc root radius and the second arc root radius.

[0012] Thirdly, embodiments of the present invention provide a method for establishing an electric arc simulation model, comprising: determining the anode sheath length according to the method for determining the anode sheath length of the electric arc model according to any of the above embodiments; and establishing an electric arc simulation model based on the anode sheath length.

[0013] Fourthly, embodiments of the present invention provide an apparatus for determining the length of an anode sheath, at least one processor, and a memory communicatively connected to the at least one processor, wherein the memory stores a computer program executable by the at least one processor, and the processor executes the computer program to implement the method for determining the length of an anode sheath of an arc model according to any of the above embodiments.

[0014] Fifthly, embodiments of the present invention provide a readable storage medium storing a computer program that can be executed by a processor of the device where the storage medium is located, to implement the method for determining the length of the anode sheath layer of the arc model in any of the above embodiments.

[0015] The technical solution of this invention determines the first arc root radius based on the current density output by the first arc generation model, then determines the second arc root radius based on the first and second arc generation models, wherein the input parameters of the second arc generation model include the first anode sheath length; finally, the anode sheath length is determined based on the first and second arc root radii. When the change in the second arc root radius relative to the first arc root radius is relatively small, it indicates that the arc root radius is stable, making the calculated anode sheath length stable and closer to the actual value. By determining a suitable anode sheath length, it is beneficial to solve the problems of slow solution speed and non-convergence in arc model simulation calculations, thereby facilitating the establishment of a more accurate arc simulation model.

[0016] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a flowchart of a method for determining the length of the anode sheath layer in an electric arc model according to an embodiment of the present invention;

[0019] Figure 2 This is a flowchart of another method for determining the length of the anode sheath layer in an electric arc model provided by an embodiment of the present invention;

[0020] Figure 3 This is a flowchart of another method for determining the length of the anode sheath layer in an electric arc model provided by an embodiment of the present invention;

[0021] Figure 4 This is a flowchart of another method for determining the length of the anode sheath layer in an electric arc model provided by an embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of a device for determining the length of the anode sheath layer in an arc model, provided in an embodiment of the present invention.

[0023] Figure 6 This is a flowchart of a method for establishing an electric arc model provided in an embodiment of the present invention;

[0024] Figure 7 This is a schematic diagram of the structure of a device for determining the length of an anode sheath layer provided in an embodiment of the present invention. Detailed Implementation

[0025] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0026] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0027] Figure 1 The flowchart of an embodiment of the present invention provides a method for determining the length of the anode sheath layer of an electric arc model. This embodiment is applicable to the modeling and simulation analysis of the anode sheath layer of an electric arc model. The method can be executed by a device for determining the length of the anode sheath layer of the electric arc model, which can be implemented in hardware and / or software.

[0028] like Figure 1 As shown, the method for determining the length of the anode sheath in this arc model includes:

[0029] S101, Step 1: Determine the radius of the first arc root based on the current density output by the first arc generation model.

[0030] Furthermore, the first arc generation model is a two-dimensional model of contact seat-arc-contact plate without considering the anode sheath. Current density is the density of charge flow, i.e., the amount of current passing through a unit cross-sectional area. Assuming the arc root is circular, the area of ​​the arc root can be characterized by its radius. The first arc root radius is the arc radius corresponding to the coverage area of ​​m% of the heat flux, starting from the center of the arc. The heat flux at the arc root is directly proportional to the current density. Therefore, the arc root radius can also be determined using the current density distribution. In other words, after calculating the current density, the arc radius corresponding to the coverage area of ​​m% current density is selected as the initial first arc root radius. It is understood that the current will change during actual calculations, but the calculated arc root radius should be the arc root radius under steady-state conditions.

[0031]

[0032] In the formula, m represents the probability distribution of the arc element, and N... [a,b] The value represents the number of arc micro-elements within any distance range on the anode surface, and N represents the total number of arc micro-clouds released at the front end of the arc cathode.

[0033] S102, Second step: Determine the second arc root radius based on the first arc root radius and the second arc generation model.

[0034] The input parameters of the second arc generation model include the length of the first anode sheath.

[0035] Specifically, the second arc generation model is a two-dimensional model of the contact seat-arc-contact plate considering the anode sheath. In this case, the contact seat and contact plate are the anode and cathode, respectively, or the contact seat and contact plate are the cathode and anode, respectively. Within the anode sheath, the arc does not satisfy local thermodynamic equilibrium. The presence of the anode sheath is simulated by setting a conductor with a thickness of 0.1 mm (with the same conductivity as the anode).

[0036] The length of the first anode sheath is the arc diameter corresponding to the range of m% current density (or heat flux). After obtaining the current density distribution through the first arc generation model, the arc radius corresponding to the range of m% current density is selected as the arc root radius. Since the length of the first anode sheath is the arc diameter corresponding to the range of m% current density, the length of the first anode sheath is equal to twice the first arc root radius. The length of the first anode sheath is input into the second arc generation model, and the second arc generation model can output the second arc root radius to improve the accuracy of the arc root radius.

[0037] S103, Step 3: Determine the length of the anode sheath based on the radius of the first and second arc roots.

[0038] After determining the radius of the second arc root, the length of the anode sheath can be determined based on the degree of change of the second arc root radius relative to the first arc root radius. When the degree of change of the second arc root radius relative to the first arc root radius is relatively small, it indicates that the arc root radius is stable, making the calculated anode sheath length stable and closer to the actual value.

[0039] The technical solution of this invention determines the first arc root radius based on the current density output by the first arc generation model, then determines the second arc root radius based on the first and second arc generation models, wherein the input parameters of the second arc generation model include the first anode sheath length; finally, the anode sheath length is determined based on the first and second arc root radii. When the change in the second arc root radius relative to the first arc root radius is relatively small, it indicates that the arc root radius is stable, making the calculated anode sheath length stable and closer to the actual value. By determining a suitable anode sheath length, it is beneficial to solve the problems of slow solution speed and non-convergence in arc model simulation calculations, thereby facilitating the establishment of a more accurate arc simulation model.

[0040] Figure 2 This is a flowchart illustrating another method for determining the anode sheath length of an arc model, provided by an embodiment of the present invention. This embodiment is based on the aforementioned embodiments. Figure 2 As shown, the method for determining the length of the anode sheath in this arc model includes:

[0041] S1011. Input current parameters into the first arc generation model so that the first arc generation model outputs current density.

[0042] Optionally, the current parameters include the maximum value of the alternating current. As one possible implementation, a first arc generation model can be established using the physical simulation software COMSOL. After inputting the maximum value of the alternating current and setting the simulation time, the COMSOL software will output the current density based on the input current parameters and the first arc generation model.

[0043] S1012. Determine the distribution of arc micro-elements based on current density.

[0044] For particle tracking, the mass and charge of each arc element need to be set, assuming that all charged particles in the arc are electrons. Therefore, the mass and charge of each arc element are set to the mass and charge of an electron. A total of N arc elements are uniformly released at the tip of the cathode. These released arc elements are driven towards the anode by wind loads and electromagnetic forces, eventually attaching to the anode surface. The area of ​​attachment of the arc elements on the anode surface is the arc root area. The number of arc elements attached at different locations on the anode surface can be further obtained. In other words, the current density is used to characterize the distribution of the arc elements.

[0045] S1013. Determine the radius of the first arc root based on the distribution of the arc elements.

[0046] S1021. Determine the length of the first anode sheath layer based on the radius of the first arc root.

[0047] S1022. Input the length of the first anode sheath into the second arc generation model to determine the radius of the second arc root.

[0048] S1023. Determine whether the relative error between the first arc root radius and the second arc root radius is less than a set threshold.

[0049] If the relative error between the first arc root radius and the second arc root radius is less than the set threshold, then step S1024 is executed; if the relative error between the first arc root radius and the second arc root radius is greater than or equal to the set threshold, then step S1025 is executed.

[0050] Specifically, the relative error between the first arc root radius and the second arc root radius is compared to see if it is less than a set threshold. If the relative error between the first arc root radius and the second arc root radius is less than the set threshold, the anode sheath length is determined to be twice the first arc root radius or twice the second arc root radius. For example, if the first arc root radius is 5 mm, the second arc root radius is 4.8 mm, the set threshold is 5%, and the relative error between the first arc root radius and the second arc root radius is 5 - 4.85 = 4%, which is less than 5%, then the anode sheath length is 10 mm or 9.6 mm. If the relative error between the first arc root radius and the second arc root radius is greater than or equal to the set threshold, the first arc root radius is updated to the second arc root radius, and step S1021 and subsequent steps are executed.

[0051] S1024 determines that the length of the anode sheath is twice the radius of the first arc root or twice the radius of the second arc root.

[0052] Since the first and second arc root radii are relatively close at this time, that is, closer to the actual value of the anode sheath length, the anode sheath length is twice the first arc root radius or twice the second arc root radius.

[0053] S1025. Update the radius of the first arc root to the radius of the second arc root, and continue to execute steps two and three.

[0054] Specifically, updating the first arc root radius to the second arc root radius means that the first arc root radius is updated in real time. Since the second arc root radius is obtained by inputting the length of the first anode sheath into the second arc generation model, the second arc root radius is also updated in real time. When the relative error between the first arc root radius and the second arc root radius is greater than or equal to a set threshold, the first arc root radius is updated to the second arc root radius, and the second and third steps are continued. In this embodiment, the second and third steps are step S1021 and the steps thereafter.

[0055] Figure 3 This is a flowchart illustrating another method for determining the anode sheath length of an electric arc model provided in this embodiment of the invention. Figure 1 Based on the embodiments. For example... Figure 3 As shown, the method for determining the length of the anode sheath in this arc model includes:

[0056] S100. Establish the first arc generation model and the second arc generation model.

[0057] For example, a first arc generation model and a second arc generation model can be established using COMSOL, or they can be established using MATLAB software. Establishing accurate first and second arc generation models is key to improving the accuracy of arc simulation calculations.

[0058] S101, Step 1: Determine the radius of the first arc root based on the current density output by the first arc generation model.

[0059] S102, Second step: Determine the second arc root radius based on the first arc root radius and the second arc generation model.

[0060] S103, Step 3: Determine the length of the anode sheath based on the radius of the first and second arc roots.

[0061] Figure 4 This is a flowchart illustrating another method for determining the anode sheath length of an arc model, provided by an embodiment of the present invention. This embodiment is based on the aforementioned embodiments. Figure 4 As shown, the method for determining the length of the anode sheath in this arc model includes:

[0062] S100. Establish the first arc generation model and the second arc generation model.

[0063] S1011. Input current parameters into the first arc generation model so that the first arc generation model outputs current density.

[0064] S1012. Determine the distribution of arc micro-elements based on current density.

[0065] S1013. Determine the radius of the first arc root based on the distribution of the arc elements.

[0066] S1021. Determine the length of the first anode sheath layer based on the radius of the first arc root.

[0067] S1022. Input the length of the first anode sheath into the second arc generation model to determine the radius of the second arc root.

[0068] S1023. Determine whether the relative error between the first arc root radius and the second arc root radius is less than a set threshold.

[0069] If the relative error between the first arc root radius and the second arc root radius is less than the set threshold, then step S1024 is executed; if the relative error between the first arc root radius and the second arc root radius is greater than or equal to the set threshold, then step S1025 is executed.

[0070] S1024 determines that the length of the anode sheath is twice the radius of the first arc root or twice the radius of the second arc root.

[0071] S1025. Update the radius of the first arc root to the radius of the second arc root, and continue to execute steps two and three.

[0072] Figure 5 A schematic diagram of a device for determining the anode sheath length of an electric arc model provided in an embodiment of the present invention is shown below. Figure 5 As shown, the device for determining the length of the anode sheath in this arc model includes:

[0073] The first arc root radius determination unit 501 is used to determine the first arc root radius based on the current density output by the first arc generation model; the second arc root radius determination unit 502 is used to determine the second arc root radius based on the first arc root radius and the second arc generation model; the anode sheath length determination unit 503 is used to determine the anode sheath length based on the relative error between the first arc root radius and the second arc root radius.

[0074] Specifically, the first arc root radius determination unit 501 is used to output current density according to the current parameters input by the first arc generation model, determine the distribution of arc micro-elements according to the output current density, and determine the first arc root radius according to the distribution of arc micro-elements.

[0075] The second arc root radius determination unit 502 is used to determine the length of the first anode sheath layer based on the first arc root radius; and to determine the second arc root radius based on the length of the first anode sheath layer and the second arc generation model.

[0076] The anode sheath length determination unit 503 is used to determine the magnitude of the relative error between the first arc root radius and the second arc root radius, and if the magnitude of the relative error between the first arc root radius and the second arc root radius is less than a set threshold, the anode sheath length is determined to be twice the first arc root radius or twice the second arc root radius.

[0077] Figure 6 A flowchart illustrating a method for establishing an electric arc model according to an embodiment of the present invention is shown below. Figure 6 As shown, the method for establishing this electric arc model includes:

[0078] S601. The length of the anode sheath is determined according to the method for determining the length of the anode sheath in the arc model according to any of the above embodiments.

[0079] S602. Establish an arc simulation model based on the length of the anode sheath.

[0080] The technical solution of this invention, by determining a suitable anode sheath length, facilitates the accurate calculation of various arc properties, such as the arc radius and the area of ​​action, which helps to reflect the dynamic arc change characteristics under real conditions, realizes the accurate simulation of the load switch arc, and thus helps to establish a more accurate arc model.

[0081] Figure 7 This is a schematic diagram of a device for determining the length of an anode sheath, provided as an embodiment of the present invention. The device is intended to represent various forms of digital computers, such as laptops, desktop computers, workbenches, personal digital assistants, servers, blade servers, mainframes, and other suitable computers. The device can also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices (e.g., helmets, glasses, watches), and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the invention described and / or claimed herein.

[0082] like Figure 7As shown, the determining device 10 includes at least one processor 11 and a memory, such as a read-only memory (ROM) 12 or a random access memory (RAM) 13, communicatively connected to the at least one processor 11. The memory stores computer programs executable by the at least one processor. The processor 11 can perform various appropriate actions and processes based on the computer program stored in the ROM 12 or loaded from storage unit 18 into the RAM 13. The RAM 13 may also store various programs and data required for the operation of the determining device 10. The processor 11, ROM 12, and RAM 13 are interconnected via a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0083] The device 10 is configured to connect multiple components to the I / O interface 15, including: an input unit 16, such as a keyboard or mouse; an output unit 17, such as various types of displays or speakers; a storage unit 18, such as a hard disk or optical disk; and a communication unit 19, such as a network interface card (NIC), a modem, or a wireless transceiver. The communication unit 19 allows the device 10 to exchange information / data with other devices via computer networks such as the Internet and / or various telecommunications networks.

[0084] Processor 11 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. Processor 11 performs the various methods and processes described above, such as the method for determining the length of the anode sheath in an electric arc model.

[0085] In some embodiments, the method for determining the anode sheath length of the arc model can be implemented as a computer program tangibly contained in a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program can be loaded and / or installed on the determining device 10 via ROM 12 and / or communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the method for determining the anode sheath length of the arc model described above can be performed. Alternatively, in other embodiments, processor 11 can be configured to perform the method for determining the anode sheath length of the arc model by any other suitable means (e.g., by means of firmware).

[0086] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-a-chip (SoCs), payload-programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0087] Computer programs used to implement the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when executed by the processor, the computer programs cause the functions / operations specified in the flowcharts and / or block diagrams to be performed. The computer programs may be executed entirely on a machine, partially on a machine, or as a standalone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0088] The computer equipment described above can be used to execute the method for determining the anode sheath length of the arc model provided in any of the above embodiments, and has the corresponding functions and beneficial effects.

[0089] In the context of this invention, a computer-readable storage medium can be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination thereof. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0090] To provide interaction with a user, the systems and techniques described herein can be implemented on a defined device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the defined device. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0091] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), or computing systems that include middleware components (e.g., application servers), or computing systems that include frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., communication networks). Examples of communication networks include local area networks (LANs), wide area networks (WANs), blockchain networks, and the Internet.

[0092] A computing system can include clients and servers. Clients and servers are generally located far apart and typically interact through communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a hosting product within the cloud computing service system to address the shortcomings of traditional physical hosts and VPS services, such as high management difficulty and weak business scalability.

[0093] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0094] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A method of determining an anode sheath length of an arc model, characterized by, The method comprises: a first step of determining a first arc root radius according to a current density output by a first arc generation model; a second step of determining a second arc root radius according to the first arc root radius and a second arc generation model; wherein an input parameter of the second arc generation model comprises a first anode sheath length; a third step of determining an anode sheath length according to the first arc root radius and the second arc root radius. The determining of the first arc root radius according to the current density output by the first arc generation model comprises: inputting a current parameter into the first arc generation model so that the first arc generation model outputs the current density; determining a distribution condition of arc elements according to the current density; determining the first arc root radius according to the distribution condition of the arc elements. The determining of the second arc root radius according to the first arc root radius and the second arc generation model comprises: determining the first anode sheath length according to the first arc root radius; inputting the first anode sheath length into the second arc generation model to determine the second arc root radius. The determining of the anode sheath length according to the first arc root radius and the second arc root radius comprises: determining whether a relative error between the first arc root radius and the second arc root radius is less than a set threshold value; if yes, determining that the anode sheath length is twice the first arc root radius or twice the second arc root radius.

2. The determination method according to claim 1, characterized in that, After the determining of whether the relative error between the first arc root radius and the second arc root radius is less than the set threshold value, the method further comprises: if no, updating the first arc root radius to the second arc root radius, and continuing to perform the second step and the third step.

3. The determination method according to claim 1, characterized in that, Before the determining of the first arc root radius according to the current density output by the first arc generation model, the method comprises: establishing the first arc generation model and the second arc generation model.

4. An apparatus for determining an anode sheath length of an arc model, characterized by The method comprises: a first arc root radius determining unit configured to determine a first arc root radius according to a current density output by a first arc generation model; a first arc root radius determining unit configured to determine a first arc root radius according to a current a second arc root radius determining unit configured to determine a second arc root radius according to the first arc root radius and a second arc generation model; an anode sheath length determining unit configured to determine an anode sheath length according to a relative error between the first arc root radius and the second arc root radius. The first arc root radius determining unit is configured to output a current density according to a current parameter input by a first arc generation model, to determine a distribution condition of arc elements according to the output current density, and to determine the first arc root radius according to the distribution condition of the arc elements. The second arc root radius determining unit is configured to determine a first anode sheath length according to the first arc root radius, and to determine a second arc root radius according to the first anode sheath length and a second arc generation model.

5. A method of establishing an arc simulation model, characterized by, The anode sheath length determining unit is configured to determine a relative error between the first arc root radius and the second arc root radius, and to determine that the anode sheath length is twice the first arc root radius or twice the second arc The method comprises: A method for determining an anode sheath length of an arc model according to any one of claims 1-3 determines the anode sheath length; The arc simulation model is established according to the anode sheath length.

6. An apparatus for determining an anode sheath length, characterized by The determining device comprises at least one processor and a memory connected to the at least one processor in communication, wherein the memory stores a computer program executable by the at least one processor, and the processor executes the computer program to implement the method for determining the anode sheath length of the arc model according to any one of claims 1-3.

7. A readable storage medium, characterized by, The computer program is stored in the storage medium and executable by a processor of a device where the storage medium is located to implement the method for determining the anode sheath length of the arc model according to any one of claims 1-3.

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