Simulation model of superconducting cable, loss calculation method, system, equipment and medium

Abstract

The invention discloses a simulation model of a superconducting cable, a loss calculation method, a system, equipment and a medium, and the simulation model comprises a supporting tube, a superconducting conductor layer, a shielding layer and an air domain which are sequentially distributed from inside to outside. The superconducting conductor layer comprises a plurality of superconducting strip layers which are sequentially distributed from inside to outside, the superconducting strip layers are formed by spirally arranging superconducting strips in the length direction of the supporting pipe according to winding pitches, and the model, the loss calculation method, the system, the equipment and the medium can accurately calculate the alternating current loss of the superconducting cable.

Description

Technical Field

[0001] The invention belongs to the technical field of superconducting electrical engineering, and relates to a simulation model and a loss calculation method, system, equipment and medium of a superconducting cable. Background Art

[0002] Superconducting cables have great development potential as a power transmission medium due to their significant advantages such as large power transmission capacity, high power transmission efficiency, and small pipeline body volume. In recent years, with the increase in electricity consumption, the power load in major cities across the country has continued to increase, and existing conventional power cables are increasingly unable to meet the requirements of rapid growth in electricity consumption in the field of high-density and large-capacity power transmission. With the continuous development of high-temperature superconducting materials, high-temperature superconducting cable projects with advantages such as large capacity, low loss, narrow channels, and environmental friendliness have been implemented one after another, and have great potential in future urban high-density power transmission applications.

[0003] During the operation of superconducting cables, the alternating current carried by the superconducting material itself will inevitably cause energy loss to the superconductor. The generation of these losses will not only cause additional operating loads on the cryogenic system, but also cause the local temperature inside the superconductor to rise when these losses accumulate to a certain extent, accompanied by the decrease of the electromagnetic properties and critical current of the superconducting material. This phenomenon will not only affect the transmission efficiency of the cable, but also seriously affect the effectiveness of the refrigeration system and cause safety hazards to the power grid system. Therefore, it is very meaningful and necessary to calculate the loss of the high-temperature superconducting cable itself.

[0004] The most basic method for calculating superconductor loss is to integrate the induced electric field E and the induced current density J generated in the superconductor and solve Maxwell's equations by combining EJ. However, the EJ relationship in superconductors is complex and difficult to describe accurately, so it is difficult to calculate the AC loss of superconducting cables. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and provide a simulation model and loss calculation method, system, device and medium for a superconducting cable, which can accurately calculate the AC loss of the superconducting cable.

[0006] To achieve the above-mentioned purpose, the present invention discloses a simulation model of a superconducting cable, comprising a support tube, a superconducting conductor layer, a shielding layer and an air domain, wherein the support tube, the superconducting conductor layer, the shielding layer and the air domain are distributed in sequence from inside to outside, the superconducting conductor layer comprises a plurality of superconducting tape layers distributed in sequence from inside to outside, and the superconducting tape layers are formed by spirally arranging superconducting tapes along the length direction of the support tube according to a winding pitch.

[0007] The simulation model of the superconducting cable of the present invention is further improved in that:

[0008] Furthermore, the support tube is a hollow frame, wherein a cooling medium flows in the support tube.

[0009] The present invention discloses a method for calculating the loss of a superconducting cable, comprising the following steps:

[0010] Constructing a simulation model of the superconducting cable according to the size and material of the superconducting cable;

[0011] Based on the simulation model of the superconducting cable, the AC loss of the superconducting cable is calculated using the H equation.

[0012] The further improvement of the loss calculation method of the superconducting cable of the present invention is:

[0013] Furthermore, the process of constructing the simulation model of the superconducting cable according to the size and material of the superconducting cable is:

[0014] According to the size and material of the superconducting cable, a Majoros model is used to perform two-dimensional simulation modeling on the superconducting cable to obtain a simulation model of the superconducting cable.

[0015] Furthermore, the simulation model based on the superconducting cable uses the H equation to calculate the AC loss of the superconducting cable, and the AC loss Q of the superconducting cable is obtained as follows:

[0016]

[0017] Wherein, s is the cross section of the superconducting tape in the simulation model of the superconducting cable, J is the current density of the superconducting tape, t is the time, and E is the electric field strength of the superconducting conductor layer under the external magnetic field.

[0018] The present invention discloses a superconducting cable loss calculation system, comprising the following steps:

[0019] A construction module, used to construct a simulation model of the superconducting cable according to the size and material of the superconducting cable;

[0020] A calculation module is used to calculate the AC loss of the superconducting cable by using the H equation based on the simulation model of the superconducting cable.

[0021] The further improvement of the loss calculation system of the superconducting cable of the present invention is:

[0022] Furthermore, the process of constructing the simulation model of the superconducting cable according to the size and material of the superconducting cable is:

[0023] According to the size and material of the superconducting cable, a Majoros model is used to perform two-dimensional simulation modeling on the superconducting cable to obtain a simulation model of the superconducting cable.

[0024] Furthermore, the simulation model based on the superconducting cable uses the H equation to calculate the AC loss of the superconducting cable, and the AC loss Q of the superconducting cable is obtained as follows:

[0025]

[0026] Wherein, s is the cross section of the superconducting tape in the simulation model of the superconducting cable, J is the current density of the superconducting tape, t is the time, and E is the electric field strength of the superconducting conductor layer under the external magnetic field.

[0027] 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 superconducting cable loss calculation method are implemented.

[0028] The present invention discloses a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the superconducting cable loss calculation method are implemented.

[0029] The present invention has the following beneficial effects:

[0030] In the specific operation of the simulation model and loss calculation method, system, device and medium of the superconducting cable described in the present invention, the superconducting conductor layer includes a plurality of superconducting tape layers distributed sequentially from the inside to the outside, and the superconducting tape layer is formed by superconducting tapes arranged in a spiral according to a winding pitch along the length direction of the support tube, that is, the superconducting tapes in the superconducting conductor layer are closely arranged as independent individuals, without considering the influence of the gap, and there is no interaction and influence between the superconducting tapes, and they are arranged in a spiral according to the winding pitch, so that the superconducting tapes in the superconducting conductor layer are independently separated. In addition, the present invention uses the H equation to calculate the AC loss of the superconducting cable, considering the influence of the gap distance between the superconducting tapes on the AC loss, so as to accurately calculate the AC loss of the superconducting cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0032] Figure 1 is a structural diagram of a simulation model of a superconducting cable in the present invention;

[0033] Figure 2 The result diagram of AC loss of superconducting cable is shown;

[0034] Figure 3 It is a system structure diagram of the present invention.

[0035] Among them, 1 is a support tube, 2 is a superconducting conductor layer, 3 is a shielding layer, and 4 is an air space. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] In the description of the present invention, it should be understood that the terms “include” and “comprises” indicate the presence of 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.

[0038] It should also be understood that the terms used in the present specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0039] It should be further understood that the term "and / or" used in the present specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes these combinations. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in the present invention generally indicates that the associated objects are in an "or" relationship.

[0040] It should be understood that, although the terms first, second, third, etc. may be used to describe preset ranges, etc. in the embodiments of the present invention, these preset ranges should not be limited to these terms. These terms are only used to distinguish preset ranges from each other. For example, without departing from the scope of the 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.

[0041] 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 determining" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)", depending on the context.

[0042] 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, rather than all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can usually 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 in 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.

[0043] Various structural schematic diagrams of the embodiments disclosed in the present invention are shown in the accompanying drawings. These figures are not drawn to scale, and some details are magnified and some details may be omitted for the purpose of clear expression. The shapes of various regions and layers shown in the figures and the relative sizes and positional relationships therebetween are only exemplary, and may deviate in practice due to manufacturing tolerances or technical limitations, and those skilled in the art may additionally design regions / layers with different shapes, sizes, and relative positions according to actual needs.

[0044] Embodiment 1

[0045] refer to Figure 1 The simulation model of the superconducting cable of the present invention comprises a support tube 1, a superconducting conductor layer 2, a shielding layer 3 and an air domain 4, wherein the support tube 1, the superconducting conductor layer 2, the shielding layer 3 and the air domain 4 are sequentially distributed from inside to outside, the superconducting conductor layer 2 comprises a plurality of superconducting tape layers sequentially distributed from inside to outside, the superconducting tape layers are formed by superconducting tapes being arranged in a spiral along the length direction of the support tube 1 according to a winding pitch, and the spiral winding angles of each superconducting tape layer are not equal; the shielding layer 3 has the same structural form as the superconducting conductor layer 2, the support tube 1 is a hollow skeleton, and a cooling medium flows in the support tube 1 to maintain the low temperature state of the superconducting cable.

[0046] Embodiment 2

[0047] The method for calculating the loss of a superconducting cable body of the present invention comprises the following steps:

[0048] 1) According to the size and material of the superconducting cable, the Majoros model is used to perform two-dimensional simulation modeling on the superconducting cable to obtain a two-dimensional model of the superconducting cable, wherein the two-dimensional model of the superconducting cable includes a support tube 1, a superconducting conductor layer 2, a shielding layer 3 and an air domain 4 from the inside to the outside, wherein the support tube 1 is a hollow copper skeleton, and liquid nitrogen flows in the support tube 1 to maintain the low temperature state of the superconducting cable. The superconducting conductor layer 2 is a multi-layer superconducting tape layer, each layer of the superconducting tape layer is arranged in a spiral according to a winding pitch along the length direction of the copper skeleton, and the spiral winding angle of each layer of the superconducting tape layer is not equal; the shielding layer 3 has the same structural form as the superconducting conductor layer 2.

[0049] 2) Based on the two-dimensional model of the superconducting cable, the loss of the superconducting cable body is calculated using the H equation.

[0050] The specific operations of step 2) are:

[0051] The constitutive characteristics of superconductors are described using the EJ Power Law. The electric field strength of a superconductor under an external magnetic field is:

[0052]

[0053] Among them, Jc(B) is the dependence of critical current density on external magnetic field, and Jc(B) is described by the variable mode Kim model, specifically:

[0054]

[0055] Among them, J c0 is the self-field critical current density, B x is the parallel component of the magnetic field B ∥ , B y is the vertical component of the magnetic field B ⊥ , k, α and B 0 are the curve fitting parameters of the anisotropy of superconducting tapes.

[0056] The current loading method of the H equation for the superconducting conductor layer 2 is as follows: a point constraint is performed at one corner of the cross section of the superconducting conductor layer 2, and the current density around the cross section of the superconducting conductor layer 2 is integrated to obtain the current size of the superconducting conductor layer 2, and the current loading of the superconducting conductor layer 2 is completed. The calculated current density J and electric field strength E are multiplied by the two dependent variables, and the surface integration is performed to obtain the instantaneous AC loss power of the superconducting conductor layer 2:

[0057] P = ∫ J·E (3)

[0058] Since the initial conditions are all set to 0, the calculation results of the first half cycle of the simulation contain more transient components. The simulated current and magnetic field distribution results are different from those in the steady state. Therefore, the AC loss value is integrated over the second half cycle of the simulation and then multiplied by 2 to obtain the transmission AC loss within one cycle. The calculation formula is as shown in (4) and the unit is J / m / cycle.

[0059]

[0060] Wherein, s is the cross section of the superconducting tape in the simulation model of the superconducting cable, J is the current density of the superconducting tape, t is the time, and E is the electric field strength of the superconducting conductor layer under the external magnetic field.

[0061] It should be noted that the present invention has the following characteristics:

[0062] The present invention adopts a two-dimensional model for modeling, which not only meets the loss solution requirements but also greatly reduces the calculation time.

[0063] The present invention uses the Majoros model to separate the independent superconducting tapes in the superconducting layer in the superconducting cable, and places them according to the actual arrangement and design size of the superconducting tapes, taking into account the influence of the gap distance between the tapes on the loss, and the calculation result is closer to the actual value.

[0064] In the present invention, the two-dimensional simulation model includes an inner support tube 1, a superconducting conductor layer 2, a shielding layer 3 and an air domain 4 from the inside to the outside, wherein the superconducting conductor layer 2 is a multi-layer superconducting tape layer, each layer of the superconducting tape layer is arranged in a spiral along the length direction of the copper skeleton according to a winding pitch, and the spiral winding angles of each layer of the superconducting tape are not equal, and the shielding layer 3 adopts the same structural form as the superconducting conductor layer 2.

[0065] The H equation is used to calculate the superconducting cable body loss in the present invention, which has the advantages of good convergence and easy setting of boundary conditions. The distribution of the state variable H in the solution domain can be obtained through software iterative solution.

[0066] Simulation experiment

[0067] Taking a 110kV / 3kA superconducting cable as an example, it is composed of two superconducting conductor layers 2 and two shielding layers 3, as shown in Table 1.

[0068] Table 1

[0069] Layer number Copper Core 1 2 Insulation layer 3 4 Inner radius / mm / 23.28 23.53 23.78 37.43 37.68 Outer radius / mm 22.28 23.53 23.78 37.43 37.68 37.93 Winding direction / +1 -1 / -1 +1 Current / A / 2322.9 2324.7 / -2333.2 2318.1

[0070] The two-dimensional simulation model of superconducting cable body loss is as follows Figure 1 As shown, from inside to outside, it includes an inner support tube 1, a superconducting conductor layer 2, a shielding layer 3 and an air space 4.

[0071] Comsol software is used for simulation modeling. The specific steps are as follows:

[0072] 1) According to the main structure of the superconducting cable, the parameters of the superconducting conductor layer 2 and the shielding layer 3 of the superconducting cable are determined, a two-dimensional model of the superconducting cable is established, and the parameters are set;

[0073] 2) according to the current of the superconducting cable, the current parameters of each superconducting conductor layer 2 are determined, and the transmission alternating current is applied to each superconducting tape layer using integral constraints;

[0074] 3) a sufficiently large circular air region 4 is provided outside the superconducting cable body, and boundary conditions are set;

[0075] 4) Mesh the simulation model of the superconducting cable body and select different meshing forms according to different areas to ensure calculation accuracy while shortening simulation time;

[0076] 5) Set the relevant parameters of the H equation in the PDE module;

[0077] 6) Set the solver, simulation time and simulation step size, etc.

[0078] 7) Output the instantaneous AC power loss of the superconducting cable body, such as Figure 2 As shown;

[0079] 8) Output the instantaneous AC power loss of the superconducting cable body, and calculate the loss per unit period of the superconducting cable body according to formula (4);

[0080] 9) The integral formula is used to calculate the loss of the superconducting conductor layer 2, which is 1.02 W / m, and the loss of the shielding layer 3, which is 1.26 W / m. The total loss of the superconducting cable is 2.28 W / m.

[0081] Embodiment 3

[0082] refer to Figure 3 The superconducting cable loss calculation system of the present invention comprises the following steps:

[0083] A construction module, used to construct a simulation model of the superconducting cable according to the size and material of the superconducting cable;

[0084] A calculation module is used to calculate the AC loss of the superconducting cable by using the H equation based on the simulation model of the superconducting cable.

[0085] As an embodiment of the present invention, the process of constructing the simulation model of the superconducting cable according to the size and material of the superconducting cable is:

[0086] According to the size and material of the superconducting cable, a Majoros model is used to perform two-dimensional simulation modeling on the superconducting cable to obtain a simulation model of the superconducting cable.

[0087] As an implementation mode of the present invention, the simulation model based on the superconducting cable uses the H equation to calculate the AC loss of the superconducting cable, and the AC loss Q of the superconducting cable is obtained as follows:

[0088]

[0089] Wherein, s is the cross section of the superconducting tape in the simulation model of the superconducting cable, J is the current density of the superconducting tape, t is the time, and E is the electric field intensity of the superconducting conductor layer (2) under the external magnetic field.

[0090] The division of modules in the embodiments of the present invention is schematic and is only a logical function division. There may be other division methods in actual implementation. In addition, each functional module in each embodiment of the present invention may be integrated into one processor, or may exist physically separately, or two or more modules may be integrated into one module. The above-mentioned integrated modules may be implemented in the form of hardware or in the form of software functional modules.

[0091] Embodiment 4

[0092] 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 implementing the superconducting cable loss calculation method include: constructing a simulation model of the superconducting cable according to the size and material of the superconducting cable; and calculating the AC loss of the superconducting cable using the H equation based on the simulation model of the superconducting cable. The process of constructing the simulation model of the superconducting cable according to the size and material of the superconducting cable is: performing two-dimensional simulation modeling of the superconducting cable using the Majoros model according to the size and material of the superconducting cable to obtain the simulation model of the superconducting cable. 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 memory, etc. The processor, the network interface, and the memory are interconnected through an internal bus, and the internal bus may be an industrial standard architecture bus, a peripheral component interconnection standard bus, an extended industrial 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 program may include a program code, and the program code includes a computer operation instruction. The memory may include memory and nonvolatile memory and provides instructions and data to the processor.

[0093] Embodiment 5

[0094] A computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of implementing the loss calculation method of the superconducting cable are, for example, including: constructing a simulation model of the superconducting cable according to the size and material of the superconducting cable; and calculating the AC loss of the superconducting cable using the H equation based on the simulation model of the superconducting cable. The process of constructing the simulation model of the superconducting cable according to the size and material of the superconducting cable is: according to the size and material of the superconducting cable, using the Majoros model to perform two-dimensional simulation modeling on the superconducting cable to obtain the simulation model of the superconducting cable. Specifically, the computer-readable storage medium includes, but is not limited to, for example, volatile memory and / or non-volatile memory. The volatile memory may include random access memory (RAM) and / or cache memory (cache), etc. The non-volatile memory may include read-only memory (ROM), hard disk, flash memory, optical disk, magnetic disk, etc.

[0095] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0096] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks 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 processes in the flowchart and / or block diagram. 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.

[0097] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate 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 A function specified in one or more boxes.

[0098] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0099] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and disclosure of the invention. The present invention is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not disclosed by the present invention. The description and examples are to be regarded as exemplary only, and the true scope and spirit of the present invention is indicated by the following claims.

[0100] It should be understood that the present invention is not limited to the exact construction that has been 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.

[0101] 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 still falls within the protection scope of the technical solution of the present invention.

Claims

1. A simulation model of a superconducting cable, characterized in that: The invention comprises a support tube (1), a superconducting conductor layer (2), a shielding layer (3) and an air space (4), wherein the support tube (1), the superconducting conductor layer (2), the shielding layer (3) and the air space (4) are sequentially arranged from the inside to the outside, and the superconducting conductor layer (2) comprises a plurality of superconducting tape layers sequentially arranged from the inside to the outside, and the superconducting tape layers are formed by superconducting tapes being arranged in a spiral according to a winding pitch along the length direction of the support tube (1).

2. The simulation model of the superconducting cable according to claim 1, characterized in that: The support tube (1) is a hollow frame, and a cooling medium flows in the support tube (1).

3. A method for calculating the loss of a superconducting cable, characterized in that: The following steps are involved: According to the size and material of the superconducting cable, construct a simulation model of the superconducting cable as claimed in claim 1; Based on the simulation model of the superconducting cable, the AC loss of the superconducting cable is calculated using the H equation.

4. The method for calculating the loss of a superconducting cable according to claim 3, characterized in that: The process of constructing the simulation model of the superconducting cable as claimed in claim 1 according to the size and material of the superconducting cable is as follows: According to the size and material of the superconducting cable, a Majoros model is used to perform two-dimensional simulation modeling on the superconducting cable to obtain a simulation model of the superconducting cable.

5. The method for calculating the loss of a superconducting cable according to claim 3, characterized in that: The simulation model based on the superconducting cable uses the H equation to calculate the AC loss of the superconducting cable, and the AC loss Q of the superconducting cable is obtained as follows: Wherein, s is the cross section of the superconducting tape in the simulation model of the superconducting cable, J is the current density of the superconducting tape, t is the time, and E is the electric field intensity of the superconducting conductor layer (2) under the external magnetic field.

6. A superconducting cable loss calculation system, characterized in that: The following steps are involved: A construction module, used to construct a simulation model of the superconducting cable as claimed in claim 1 according to the size and material of the superconducting cable; A calculation module is used to calculate the AC loss of the superconducting cable by using the H equation based on the simulation model of the superconducting cable.

7. The superconducting cable loss calculation system according to claim 6, characterized in that: The process of constructing the simulation model of the superconducting cable as claimed in claim 1 according to the size and material of the superconducting cable is as follows: According to the size and material of the superconducting cable, a Majoros model is used to perform two-dimensional simulation modeling on the superconducting cable to obtain a simulation model of the superconducting cable.

8. The superconducting cable loss calculation system according to claim 6, characterized in that: The simulation model based on the superconducting cable uses the H equation to calculate the AC loss of the superconducting cable, and the AC loss Q of the superconducting cable is obtained as follows: Wherein, s is the cross section of the superconducting tape in the simulation model of the superconducting cable, J is the current density of the superconducting tape, t is the time, and E is the electric field intensity of the superconducting conductor layer (2) under the external magnetic field.

9. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the steps of the method for calculating the loss of a superconducting cable according to any one of claims 3 to 5 are implemented.

10. 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 method for calculating the loss of a superconducting cable according to any one of claims 3 to 5 are implemented.

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