CORC-CICC high-temperature superconducting conductor stability evaluation method and related device

Abstract

The invention discloses a CORC-CICC high-temperature superconducting conductor stability evaluation method and a related device. The method comprises the following steps: acquiring structural information of a CORC-CICC high-temperature superconducting conductor; according to the structural information of the CORC-CICC high-temperature superconducting conductor, determining the shunting temperature, the critical current, the minimum quenching energy and the quenching propagation speed of the CORC-CICC high-temperature superconducting conductor; and evaluating the stability of the CORC-CICC high-temperature superconducting conductor according to the shunting temperature, the critical current, the minimum quenching energy and the quenching propagation velocity of the CORC-CICC high-temperature superconducting conductor, and the method and the related device can evaluate the stability of the CORC-CICC high-temperature superconducting conductor.

Description

Technical Field

[0001] The present invention belongs to the technical field of superconducting electronics and relates to a CORC-CICC high-temperature superconducting conductor stability assessment method and related devices. Background Art

[0002] Large superconducting magnets are subject to a variety of harsh environmental conditions, including high currents, high background magnetic fields, and complex disturbance conditions. Stability research has always been a focus of attention in the reliability design and safe service of superconducting magnets. As an important component of the fusion magnet system, the operation of high-temperature superconducting conductors and their magnet coils at low temperatures and high fields has a significant impact on the stability and efficiency of the system, which is directly related to the stability and uniformity of the magnetic field, thereby affecting the plasma confinement effect and the efficiency of the fusion reaction. Once a high-temperature superconducting conductor and its magnet coil fail, serious consequences such as magnetic field failure and plasma runaway may occur, affecting the normal progress of the fusion reaction. Therefore, the stability technology of fusion high-temperature superconducting magnets has become one of the difficulties restricting magnet design.

[0003] Unlike the linear structure of low-temperature superconducting tape, second-generation high-temperature superconducting materials are tape structures with a large width-to-thickness ratio. Their current-carrying capacity is affected by factors such as magnetic field direction and stress. Currently, a variety of cable-in-tube conductor structures based on second-generation high-temperature superconducting tape REBCO have been proposed, including Roeble, round-core cables, twisted stacked cables, and quasi-isotropic stranded cables. Domestic and international scholars have conducted years of theoretical analysis and experimental research on the stability of low-temperature superconducting (Conductor-on-Round) CORC- (Cable-in-Conduit-Conductor) CICC conductors, and have continuously improved and refined the methods for calculating stability margins and analyzing quench behavior. However, the analysis of the stability of high-temperature superconducting CORC-CICC conductors is just beginning. Summary of the Invention

[0004] The object of the present invention is to overcome the above-mentioned shortcomings of the prior art and provide a CORC-CICC high-temperature superconducting conductor stability assessment method and related device, which can assess the stability of CORC-CICC high-temperature superconducting conductors.

[0005] To achieve the above object, the present invention discloses a CORC-CICC high-temperature superconducting conductor stability assessment method, comprising:

[0006] Obtain structural information of CORC-CICC high-temperature superconducting conductors;

[0007] determining, based on the structural information of the CORC-CICC high-temperature superconducting conductor, a shunt temperature, a critical current, a minimum quench energy, and a quench propagation velocity of the CORC-CICC high-temperature superconducting conductor;

[0008] The stability of the CORC-CICC high-temperature superconducting conductor is evaluated based on the shunting temperature, critical current, minimum quench energy and quench propagation velocity of the CORC-CICC high-temperature superconducting conductor.

[0009] The CORC-CICC high-temperature superconducting conductor stability assessment method of the present invention is further improved in that:

[0010] Furthermore, the process of determining the shunting temperature of the CORC-CICC high-temperature superconducting conductor according to the structural information of the CORC-CICC high-temperature superconducting conductor is as follows:

[0011] constructing an equivalent circuit model of the CICC-CORC high-temperature superconducting conductor based on the structural information of the CORC-CICC high-temperature superconducting conductor;

[0012] Establishing an algebraic equation of the CORC-CICC high-temperature superconducting conductor based on the equivalent circuit model of the CICC-CORC high-temperature superconducting conductor;

[0013] Solving the algebraic equation of the CORC-CICC high-temperature superconducting conductor to obtain a voltage drop V per unit length of the superconducting cable in the CORC-CICC high-temperature superconducting conductor;

[0014] When the voltage drop V per unit length of the superconducting cable is greater than or equal to a preset voltage threshold Vc, the temperature of the superconducting cable is used as the shunt temperature of the CORC-CICC high-temperature superconducting conductor.

[0015] Furthermore, the process of determining the critical current of the CORC-CICC high-temperature superconducting conductor according to the structural information of the CORC-CICC high-temperature superconducting conductor is as follows:

[0016] Establishing a TA model of the CORC-CICC high-temperature superconducting conductor based on the structural information of the CORC-CICC high-temperature superconducting conductor;

[0017] According to the TA model of the CORC-CICC high-temperature superconducting conductor, the critical current of the CORC-CICC high-temperature superconducting conductor is obtained through simulation calculation.

[0018] Furthermore, the process of determining the minimum quench energy and quench propagation velocity of the CORC-CICC high-temperature superconducting conductor based on the structural information of the CORC-CICC high-temperature superconducting conductor is as follows:

[0019] According to the structural information of the CORC-CICC high-temperature superconducting conductor, a CORC-CICC high-temperature superconducting conductor with a pitch of 1 / N is intercepted, and a geometric model of the CORC-CICC high-temperature superconducting conductor with a pitch of 1 / N is established;

[0020] According to the geometric model of the CORC-CICC high-temperature superconducting conductor with a pitch of 1 / N, the minimum quench energy and quench propagation velocity of the CORC-CICC high-temperature superconducting conductor are obtained through simulation calculation.

[0021] Furthermore, the minimum quench energy MQE of the CORC-CICC high-temperature superconducting conductor is:

[0022]

[0023] Where P is the power of the heat source applied by the CORC-CICC high-temperature superconducting conductor, t0 is the initial time of applying the heat pulse (s), t p is the duration of the applied heat pulse.

[0024] Furthermore, the quench propagation velocity NZPV of the CORC-CICC high-temperature superconducting conductor is:

[0025]

[0026] Where, ΔL i is the length of the i-th region, b i is the time when super propagation reaches the beginning of the i-th region, b i+1 is the time when super propagation reaches the end of the i-th region.

[0027] The present invention discloses a CORC-CICC high-temperature superconducting conductor stability evaluation system, comprising:

[0028] Acquisition module, used to obtain structural information of CORC-CICC high-temperature superconducting conductors;

[0029] a determination module, configured to determine the shunt temperature, critical current, minimum quench energy, and quench propagation velocity of the CORC-CICC high-temperature superconducting conductor based on the structural information of the CORC-CICC high-temperature superconducting conductor;

[0030] An evaluation module is used to evaluate the stability of the CORC-CICC high-temperature superconducting conductor according to the shunting temperature, critical current, minimum quench energy and quench propagation velocity of the CORC-CICC high-temperature superconducting conductor.

[0031] The CORC-CICC high-temperature superconducting conductor stability assessment system of the present invention is further improved in that:

[0032] Furthermore, the determining module includes:

[0033] A first construction unit is configured to construct an equivalent circuit model of the CICC-CORC high-temperature superconducting conductor based on the structural information of the CORC-CICC high-temperature superconducting conductor;

[0034] A second construction unit is configured to construct an algebraic equation of the CORC-CICC high-temperature superconducting conductor based on an equivalent circuit model of the CICC-CORC high-temperature superconducting conductor;

[0035] A solving unit, configured to solve the algebraic equation of the CORC-CICC high-temperature superconducting conductor to obtain a voltage drop V per unit length of the superconducting cable in the CORC-CICC high-temperature superconducting conductor;

[0036] The determining unit is configured to use the temperature of the superconducting cable as the shunt temperature of the CORC-CICC high-temperature superconducting conductor when the voltage drop V per unit length of the superconducting cable is greater than or equal to a preset voltage threshold Vc.

[0037] Furthermore, the determining module includes:

[0038] A third construction unit is configured to construct a TA model of the CORC-CICC high-temperature superconducting conductor according to the structural information of the CORC-CICC high-temperature superconducting conductor;

[0039] The first calculation unit is configured to obtain the critical current of the CORC-CICC high-temperature superconducting conductor through simulation calculation according to the TA model of the CORC-CICC high-temperature superconducting conductor.

[0040] Furthermore, the determining module includes:

[0041] a fourth construction unit, configured to intercept a CORC-CICC high-temperature superconducting conductor with a 1 / N pitch according to the structural information of the CORC-CICC high-temperature superconducting conductor, and construct a geometric model of the CORC-CICC high-temperature superconducting conductor with a 1 / N pitch;

[0042] The second calculation unit is used to obtain the minimum quench energy and quench propagation velocity of the CORC-CICC high-temperature superconducting conductor through simulation calculation based on the geometric model of the CORC-CICC high-temperature superconducting conductor with a pitch of 1 / N.

[0043] Furthermore, the minimum quench energy MQE of the CORC-CICC high-temperature superconducting conductor is:

[0044]

[0045] Where P is the power of the heat source applied by the CORC-CICC high-temperature superconducting conductor, t0 is the initial time of applying the heat pulse (s), t p is the duration of the applied heat pulse.

[0046] Furthermore, the quench propagation velocity NZPV of the CORC-CICC high-temperature superconducting conductor is:

[0047]

[0048] Where, ΔL i is the length of the i-th region, b i is the time when super propagation reaches the beginning of the i-th region, b i+1 is the time when super propagation reaches the end of the i-th region.

[0049] The present invention discloses a computer device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the steps of the CORC-CICC high-temperature superconducting conductor stability assessment method are implemented.

[0050] The present invention discloses a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program. When the computer program is executed by a processor, the steps of the CORC-CICC high-temperature superconducting conductor stability assessment method are implemented.

[0051] The present invention has the following beneficial effects:

[0052] The CORC-CICC high-temperature superconducting conductor stability assessment method and related device of the present invention, during specific operation, evaluate the stability of the CORC-CICC high-temperature superconducting conductor in multiple dimensions, including shunting temperature, critical current, minimum quench energy, and quench propagation velocity, with high accuracy. Specifically, the shunting temperature, critical current, minimum quench energy, and quench propagation velocity of the CORC-CICC high-temperature superconducting conductor are determined based on structural information of the CORC-CICC high-temperature superconducting conductor. The stability of the CORC-CICC high-temperature superconducting conductor is evaluated based on the shunting temperature, critical current, minimum quench energy, and quench propagation velocity of the CORC-CICC high-temperature superconducting conductor. The method is simple to operate and highly practical.

[0053] Furthermore, based on the TA model of the CORC-CICC high-temperature superconducting conductor, the critical current of the CORC-CICC high-temperature superconducting conductor is obtained through simulation calculation, which can planarize very thin superconducting layers, while reducing the difficulty of superconducting tape meshing and saving calculation time.

[0054] Furthermore, based on the geometric model of the CORC-CICC high-temperature superconducting conductor with a pitch of 1 / N, the minimum quench energy and quench propagation velocity of the CORC-CICC high-temperature superconducting conductor are obtained through simulation calculations, thereby simplifying the simulation model and reducing the difficulty of calculation. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0056] Figure 1 is a flow chart of the method of the present invention;

[0057] Figure 2 This is the structural diagram of the CORC-CICC high-temperature superconducting conductor;

[0058] Figure 3 The equivalent circuit diagram of the CICC structure based on 6 CORCs;

[0059] Figure 4 This is a system structure diagram of the present invention. DETAILED DESCRIPTION

[0060] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0061] In the description of the present invention, it is to be understood that the terms “include” and “comprise” indicate the presence of the described features, wholes, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or collections thereof.

[0062] It should also be understood that the terms used in the present specification are only for the purpose of describing particular embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

[0063] It should be further understood that the term "and / or" as used in the present specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in the present invention generally indicates that the associated objects are in an "or" relationship.

[0064] It should be understood that although the terms "first," "second," and "third" may be used to describe preset ranges in embodiments of the present invention, these preset ranges should not be limited to these terms. These terms are merely used to distinguish one preset range from another. For example, without departing from the scope of embodiments of the present invention, the first preset range may also be referred to as the second preset range, and similarly, the second preset range may also be referred to as the first preset range.

[0065] The word "if," as used herein, may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting," depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to the determination" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)," depending on the context.

[0066] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0067] The accompanying drawings illustrate various schematic diagrams of structures according to embodiments disclosed herein. These figures are not drawn to scale; for clarity, some details are exaggerated and some details may be omitted. The shapes of the various regions and layers shown in the figures, as well as their relative sizes and positional relationships, are merely exemplary and may deviate in practice due to manufacturing tolerances or technical limitations. Those skilled in the art may design regions / layers with different shapes, sizes, and relative positions as needed.

[0068] Example 1

[0069] refer to Figure 1 The CORC-CICC high-temperature superconducting conductor stability assessment method of the present invention comprises:

[0070] 1) Obtain structural information of CORC-CICC high-temperature superconducting conductors;

[0071] by Figure 2 Taking the CORC-CICC high-temperature superconducting conductor structure shown as an example, a single CORC conductor consists of two layers, with three superconducting tapes in each layer spirally wound on a copper tube; the CORC-CICC high-temperature superconducting conductor based on the CORC conductor consists of six CORCs and a central hollow copper skeleton with spiral grooves.

[0072] 2) determining the shunting temperature, critical current, minimum quench energy, and quench propagation velocity of the CORC-CICC high-temperature superconducting conductor based on the structural information of the CORC-CICC high-temperature superconducting conductor;

[0073] The specific process of step 2) is:

[0074] 21) Analyze the structural information of CORC-CICC high-temperature superconducting conductors and construct an equivalent circuit model of CICC-CORC high-temperature superconducting conductors;

[0075] Under DC steady-state conditions, the inductance effect is temporarily ignored and the CORC conductor is simplified to a copper tube and a superconducting tape in parallel, i.e., a linear and nonlinear resistance element. The CICC-CORC high-temperature superconducting conductor is simplified to six CORC conductors in parallel with a copper skeleton. The equivalent circuit model of the CICC-CORC high-temperature superconducting conductor is shown in the figure below. Figure 3 As shown, the resistance of the superconducting tape is calculated according to the power law V / Vc=(I / Ic)n, and the copper resistance is calculated according to Ohm's law.

[0076] 22) Establish the algebraic equations for CORC-CICC high-temperature superconductors;

[0077] Based on the equivalent circuit model of CICC-CORC high-temperature superconducting conductor, the algebraic equation of CORC-CICC high-temperature superconducting conductor is established as follows:

[0078]

[0079] V=R Cu,i I Cu,i (3)

[0080] Among them, I Cu,i and I HTS,i represents the current flowing through the i-th copper tube and the HTS superconducting tape flowing through the i-th CORC, respectively; for the CICC-CORC high-temperature superconducting conductor circuit, N is equal to 6; If represents the current flowing through the copper skeleton of the high-temperature superconducting conductor; V is the voltage drop per unit length of the superconducting cable; I c,i (B, T) is the critical current of a single CORC; I c,i The dependence of (B, T) on the magnetic field B and the operating temperature T can be obtained by using the published experimental data Jc(B, T) and TA model simulation calculation; R Cu,i is the resistance of the i-th copper tube, which can be obtained by interpolation using the temperature-varying resistivity data of copper and the cross-sectional area of ​​the central copper skeleton and the copper tube; Iop is the total current, which is equal to the current passing through the entire CICC superconducting cable.

[0081] The voltage drop V per unit length of the superconducting cable is calculated according to the algebraic equation of the CORC-CICC high-temperature superconducting conductor.

[0082] 23) Calculate the shunt temperature of CORC-CICC high-temperature superconducting conductors;

[0083] When V is greater than or equal to a preset voltage threshold Vc, the temperature of the superconducting cable is used as the shunt temperature of the CORC-CICC high-temperature superconducting conductor, wherein Vc is selected to be 4V-10V.

[0084] 24) Establish a TA model for CORC-CICC high-temperature superconducting conductors;

[0085] In the superconducting domain, the state variable for solving the T equation is the current vector potential T, and the curl is For the second generation of high temperature superconducting tapes, the relationship between the electric field and current density can be described by the EJ power law:

[0086]

[0087] Among them, E c is the critical criterion, 1×10-4V / m; J norm is the current density norm; J c is the critical current density; n is a constant. The current of the superconducting tape is equal to the integral of the current density of the tape cross section. According to the definition of current vector potential and using Stokes' theorem, the relationship between the current I and the current vector potential T of the superconducting tape is:

[0088]

[0089] Where S is the cross-sectional area of ​​the strip; L is the circumference of the strip cross section.

[0090] The current vector potential is in the normal direction of the conductor surface, that is, the T component parallel to the strip surface is 0, then:

[0091] I=(T1-T2)h sc (6)

[0092] Where T1 and T2 are the values ​​of T on both sides of the strip; h sc is the thickness of the superconducting layer.

[0093] In the air domain, the magnetic field is calculated by solving the A equation, whose governing equation is derived from Ampere's theorem:

[0094]

[0095] The magnetic flux density is calculated from the magnetic field equation, which in turn affects the current density distribution on the strip surface, realizing the coupling of the T equation and the A equation.

[0096] 25) Calculate the critical current of CORC-CICC high-temperature superconducting conductors;

[0097] Assume a ramped excitation current with an excitation time of 0.1 s. Add the Magnetic Field (mf) interface and set an external magnetic field boundary condition in the background field to calculate the A equation. Add the Coefficient Form Partial Differential Equation (cb) interface and use Dirichlet form boundary conditions to apply a ramped excitation current to calculate the T equation. Add a transient study. Since the excitation current is applied at time 0.1 s, set the simulation time to 0.2 s and the step size to 0.001 s. The intersection of the two curves is the critical current of the CORC-CICC high-temperature superconducting conductor.

[0098] 26) Calculate the minimum quench energy of CORC-CICC high-temperature superconducting conductors;

[0099] A 1 / 4 pitch CORC-CICC high-temperature superconducting conductor was cut off, and a geometric model of the 1 / 4 pitch CORC-CICC high-temperature superconducting conductor was constructed, and simulation calculations were performed in COMSOL.

[0100] A heat source is applied to the conductor, and the heat generated by the heat source when the quench collapse occurs is taken as the minimum quench energy. Since the applied thermal interference time is very short, its boundary conditions are set to adiabatic during the simulation process. The cooling channels of the central copper skeleton and the cooling channels of the six CORC copper tubes perform convective heat exchange with the cooling medium. The Joule heat generated by the resistive material in the CICC conductor is added as a heat source in the simulation model. It is repeatedly iterated between the shunt current and the critical current to seek the quench behavior of the CORC-CICC high-temperature superconducting conductor. When quenching occurs, the minimum quench energy of the CORC-CICC high-temperature superconducting conductor is calculated by formula (8) as:

[0101]

[0102] Where, P is the power of the applied heat source (W); t0 is the initial time of heat pulse application (s); t p is the heat pulse duration (s).

[0103] 27) Calculate the quench propagation velocity of CORC-CICC high-temperature superconducting conductors;

[0104] While calculating the minimum quench energy in COMSOL, probes are set at intervals to measure the transverse and longitudinal quench propagation distances. Substituting this into equation (9), the quench propagation velocity NZPV of the CORC-CICC high-temperature superconducting conductor is obtained as:

[0105]

[0106] Where, ΔL i is the length of the i-th region, b i is the time when super propagation reaches the beginning of the i-th region, b i+1 is the moment when super propagation reaches the end of the i-th region, where i is an integer greater than or equal to 1.

[0107] 3) evaluating the stability of the CORC-CICC high-temperature superconducting conductor based on the shunting temperature, critical current, minimum quench energy, and quench propagation velocity of the CORC-CICC high-temperature superconducting conductor, and comparing the shunting temperature, critical current, minimum quench energy, and quench propagation velocity of the CORC-CICC high-temperature superconducting conductor with their corresponding preset reasonable ranges. When the shunting temperature, critical current, minimum quench energy, and quench propagation velocity of the CORC-CICC high-temperature superconducting conductor are all within their corresponding preset reasonable ranges, it indicates that the CORC-CICC high-temperature superconducting conductor has high stability; otherwise, it indicates that the CORC-CICC high-temperature superconducting conductor has low stability.

[0108] Example 2

[0109] refer to Figure 4 The CORC-CICC high-temperature superconducting conductor stability evaluation system of the present invention comprises:

[0110] Acquisition module, used to obtain structural information of CORC-CICC high-temperature superconducting conductors;

[0111] a determination module, configured to determine the shunt temperature, critical current, minimum quench energy, and quench propagation velocity of the CORC-CICC high-temperature superconducting conductor based on the structural information of the CORC-CICC high-temperature superconducting conductor;

[0112] An evaluation module is used to evaluate the stability of the CORC-CICC high-temperature superconducting conductor according to the shunting temperature, critical current, minimum quench energy and quench propagation velocity of the CORC-CICC high-temperature superconducting conductor.

[0113] In this embodiment, the determining module includes:

[0114] A first construction unit is configured to construct an equivalent circuit model of the CICC-CORC high-temperature superconducting conductor based on the structural information of the CORC-CICC high-temperature superconducting conductor;

[0115] A second construction unit is configured to construct an algebraic equation of the CORC-CICC high-temperature superconducting conductor based on an equivalent circuit model of the CICC-CORC high-temperature superconducting conductor;

[0116] A solving unit, configured to solve the algebraic equation of the CORC-CICC high-temperature superconducting conductor to obtain a voltage drop V per unit length of the superconducting cable in the CORC-CICC high-temperature superconducting conductor;

[0117] The determining unit is configured to use the temperature of the superconducting cable as the shunt temperature of the CORC-CICC high-temperature superconducting conductor when the voltage drop V per unit length of the superconducting cable is greater than or equal to a preset voltage threshold Vc.

[0118] In this embodiment, the determining module includes:

[0119] A third construction unit is configured to construct a TA model of the CORC-CICC high-temperature superconducting conductor according to the structural information of the CORC-CICC high-temperature superconducting conductor;

[0120] The first calculation unit is configured to obtain the critical current of the CORC-CICC high-temperature superconducting conductor through simulation calculation according to the TA model of the CORC-CICC high-temperature superconducting conductor.

[0121] In this embodiment, the determining module includes:

[0122] a fourth construction unit, configured to intercept a CORC-CICC high-temperature superconducting conductor with a 1 / N pitch according to the structural information of the CORC-CICC high-temperature superconducting conductor, and construct a geometric model of the CORC-CICC high-temperature superconducting conductor with a 1 / N pitch;

[0123] The second calculation unit is used to obtain the minimum quench energy and quench propagation velocity of the CORC-CICC high-temperature superconducting conductor through simulation calculation based on the geometric model of the CORC-CICC high-temperature superconducting conductor with a pitch of 1 / N.

[0124] In this embodiment, the minimum quench energy MQE of the CORC-CICC high-temperature superconducting conductor is:

[0125]

[0126] Where P is the power of the heat source applied by the CORC-CICC high-temperature superconducting conductor, t0 is the initial time of applying the heat pulse (s), t p is the duration of the applied heat pulse.

[0127] In this embodiment, the quench propagation velocity NZPV of the CORC-CICC high-temperature superconducting conductor is:

[0128]

[0129] Where, ΔL i is the length of the i-th region, b i is the time when super propagation reaches the beginning of the i-th region, b i+1 is the time when super propagation reaches the end of the i-th region.

[0130] The division of modules in the embodiments of the present application is illustrative and is merely a logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional modules in the various embodiments of the present application may be integrated into a single processor, or may exist physically separately, or two or more modules may be integrated into a single module. The aforementioned integrated modules may be implemented in the form of hardware or software functional modules.

[0131] Example 3

[0132] A computer device includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the steps of the CORC-CICC high-temperature superconducting conductor stability assessment method are implemented, for example, including: obtaining structural information of the CORC-CICC high-temperature superconducting conductor; determining the shunt temperature, critical current, minimum quench energy, and quench propagation velocity of the CORC-CICC high-temperature superconducting conductor based on the structural information of the CORC-CICC high-temperature superconducting conductor; and assessing the stability of the CORC-CICC high-temperature superconducting conductor based on the shunt temperature, critical current, minimum quench energy, and quench propagation velocity of the CORC-CICC high-temperature superconducting conductor. The memory may include a memory, such as a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device. The processor, network interface, and memory are interconnected via an internal bus, which may be an industry standard architecture bus, a peripheral component interconnect standard bus, an extended industry standard architecture bus, etc. The bus may be divided into an address bus, a data bus, a control bus, etc. The memory is used to store programs. Specifically, the programs may include program codes, and the program codes include computer operation instructions. The memory may include internal memory and non-volatile memory, and provides instructions and data to the processor.

[0133] Example 4

[0134] A computer-readable storage medium stores a computer program that, when executed by a processor, implements the steps of a CORC-CICC high-temperature superconducting conductor stability assessment method, for example, including: obtaining structural information of the CORC-CICC high-temperature superconducting conductor; determining the shunt temperature, critical current, minimum quench energy, and quench propagation velocity of the CORC-CICC high-temperature superconducting conductor based on the structural information of the CORC-CICC high-temperature superconducting conductor; and assessing the stability of the CORC-CICC high-temperature superconducting conductor based on the shunt temperature, critical current, minimum quench energy, and quench propagation velocity of the CORC-CICC high-temperature superconducting conductor. Specifically, the computer-readable storage medium includes, but is not limited to, volatile memory and / or non-volatile memory. The volatile memory may include random access memory (RAM) and / or cache memory, etc. The non-volatile memory may include read-only memory (ROM), hard disk, flash memory, optical disk, magnetic disk, etc.

[0135] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0136] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the steps in the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0137] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0138] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0139] Those skilled in the art will readily identify other embodiments of the present invention after considering the specification and disclosure of the invention. This application is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the invention being indicated by the following claims.

[0140] It should be understood that the present invention is not limited to the exact construction described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

[0141] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent structural change made to the above embodiment based on the technical essence of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A CORC-CICC high-temperature superconducting conductor stability assessment method, characterized in that: include: Obtain structural information of CORC-CICC high-temperature superconducting conductors; determining, based on the structural information of the CORC-CICC high-temperature superconducting conductor, a shunt temperature, a critical current, a minimum quench energy, and a quench propagation velocity of the CORC-CICC high-temperature superconducting conductor; The stability of the CORC-CICC high-temperature superconducting conductor is evaluated based on the shunting temperature, critical current, minimum quench energy and quench propagation velocity of the CORC-CICC high-temperature superconducting conductor.

2. The CORC-CICC high-temperature superconducting conductor stability assessment method according to claim 1, characterized in that: The process of determining the shunting temperature of the CORC-CICC high-temperature superconducting conductor according to the structural information of the CORC-CICC high-temperature superconducting conductor is as follows: constructing an equivalent circuit model of the CICC-CORC high-temperature superconducting conductor based on the structural information of the CORC-CICC high-temperature superconducting conductor; Establishing an algebraic equation of the CORC-CICC high-temperature superconducting conductor based on the equivalent circuit model of the CICC-CORC high-temperature superconducting conductor; Solving the algebraic equation of the CORC-CICC high-temperature superconducting conductor to obtain a voltage drop V per unit length of the superconducting cable in the CORC-CICC high-temperature superconducting conductor; When the voltage drop V per unit length of the superconducting cable is greater than or equal to a preset voltage threshold Vc, the temperature of the superconducting cable is used as the shunt temperature of the CORC-CICC high-temperature superconducting conductor.

3. The CORC-CICC high-temperature superconducting conductor stability assessment method according to claim 1, characterized in that: The process of determining the critical current of the CORC-CICC high-temperature superconducting conductor according to the structural information of the CORC-CICC high-temperature superconducting conductor is as follows: Establishing a TA model of the CORC-CICC high-temperature superconducting conductor based on the structural information of the CORC-CICC high-temperature superconducting conductor; According to the TA model of the CORC-CICC high-temperature superconducting conductor, the critical current of the CORC-CICC high-temperature superconducting conductor is obtained through simulation calculation.

4. The CORC-CICC high-temperature superconducting conductor stability assessment method according to claim 1, characterized in that: The process of determining the minimum quench energy and quench propagation velocity of the CORC-CICC high-temperature superconducting conductor according to the structural information of the CORC-CICC high-temperature superconducting conductor is as follows: According to the structural information of the CORC-CICC high-temperature superconducting conductor, a CORC-CICC high-temperature superconducting conductor with a pitch of 1 / N is intercepted, and a geometric model of the CORC-CICC high-temperature superconducting conductor with a pitch of 1 / N is established; According to the geometric model of the CORC-CICC high-temperature superconducting conductor with a pitch of 1 / N, the minimum quench energy and quench propagation velocity of the CORC-CICC high-temperature superconducting conductor are obtained through simulation calculation.

5. The CORC-CICC high-temperature superconducting conductor stability assessment method according to claim 4, characterized in that: The minimum quench energy MQE of the CORC-CICC high-temperature superconducting conductor is: Where P is the power of the heat source applied by the CORC-CICC high-temperature superconducting conductor, t0 is the initial time of applying the heat pulse (s), t p is the duration of the applied heat pulse.

6. The CORC-CICC high-temperature superconducting conductor stability assessment method according to claim 4, characterized in that: The quench propagation velocity NZPV of the CORC-CICC high-temperature superconducting conductor is: Where, ΔL i is the length of the i-th region, b i is the time when super propagation reaches the beginning of the i-th region, b i+1 is the time when super propagation reaches the end of the i-th region.

7. A CORC-CICC high-temperature superconducting conductor stability assessment system, characterized in that: include: Acquisition module, used to obtain structural information of CORC-CICC high-temperature superconducting conductors; a determination module, configured to determine the shunt temperature, critical current, minimum quench energy, and quench propagation velocity of the CORC-CICC high-temperature superconducting conductor based on the structural information of the CORC-CICC high-temperature superconducting conductor; An evaluation module is used to evaluate the stability of the CORC-CICC high-temperature superconducting conductor according to the shunting temperature, critical current, minimum quench energy and quench propagation velocity of the CORC-CICC high-temperature superconducting conductor.

8. The CORC-CICC high-temperature superconducting conductor stability evaluation system according to claim 7, characterized in that: The determination module includes: A first construction unit is configured to construct an equivalent circuit model of the CICC-CORC high-temperature superconducting conductor based on the structural information of the CORC-CICC high-temperature superconducting conductor; A second construction unit is configured to construct an algebraic equation of the CORC-CICC high-temperature superconducting conductor based on an equivalent circuit model of the CICC-CORC high-temperature superconducting conductor; A solving unit, configured to solve the algebraic equation of the CORC-CICC high-temperature superconducting conductor to obtain a voltage drop V per unit length of the superconducting cable in the CORC-CICC high-temperature superconducting conductor; The determining unit is configured to use the temperature of the superconducting cable as the shunt temperature of the CORC-CICC high-temperature superconducting conductor when the voltage drop V per unit length of the superconducting cable is greater than or equal to a preset voltage threshold Vc.

9. The CORC-CICC high-temperature superconducting conductor stability evaluation system according to claim 7, characterized in that: The determination module includes: A third construction unit is configured to construct a TA model of the CORC-CICC high-temperature superconducting conductor according to the structural information of the CORC-CICC high-temperature superconducting conductor; The first calculation unit is configured to obtain the critical current of the CORC-CICC high-temperature superconducting conductor through simulation calculation according to the TA model of the CORC-CICC high-temperature superconducting conductor.

10. The CORC-CICC high-temperature superconducting conductor stability evaluation system according to claim 7, characterized in that: The determination module includes: a fourth construction unit, configured to intercept a CORC-CICC high-temperature superconducting conductor with a 1 / N pitch according to the structural information of the CORC-CICC high-temperature superconducting conductor, and construct a geometric model of the CORC-CICC high-temperature superconducting conductor with a 1 / N pitch; The second calculation unit is used to obtain the minimum quench energy and quench propagation velocity of the CORC-CICC high-temperature superconducting conductor through simulation calculation based on the geometric model of the CORC-CICC high-temperature superconducting conductor with a pitch of 1 / N.

11. The CORC-CICC high-temperature superconducting conductor stability evaluation system according to claim 10, characterized in that: The minimum quench energy MQE of the CORC-CICC high-temperature superconducting conductor is: Where P is the power of the heat source applied by the CORC-CICC high-temperature superconducting conductor, t0 is the initial time of applying the heat pulse (s), t p is the duration of the applied heat pulse.

12. The CORC-CICC high-temperature superconducting conductor stability evaluation system according to claim 10, characterized in that: The quench propagation velocity NZPV of the CORC-CICC high-temperature superconducting conductor is: Where, ΔL i is the length of the i-th region, b i is the time when super propagation reaches the beginning of the i-th region, b i+1 is the time when super propagation reaches the end of the i-th region.

13. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, the steps of the CORC-CICC high-temperature superconducting conductor stability evaluation method according to any one of claims 1 to 6 are implemented.

14. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the CORC-CICC high-temperature superconducting conductor stability evaluation method according to any one of claims 1 to 6 are implemented.

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