Interactive simulation method for calculating aging parameters of superconducting cable and superconducting cable system thereof

Abstract

The invention discloses an interactive simulation method for calculating aging parameters of a superconducting cable and a superconducting cable system.The system comprises the steps that a cable body electromagnetic transient model, a cooling system transient thermal model and a three-dimensional multi-field finite element model are built, and cable material characteristics, environment parameters and operation condition data are input; a model interaction interface is constructed through a simulation platform, data interaction and coupling among multiple models are realized, simulation parameters are dynamically adjusted, accurate matching of model step length and dynamic characteristics of the system is ensured, and aging parameters of the superconducting cable system under complex working conditions are calculated. According to the method, the operation state of the superconducting cable is evaluated by analyzing the mixed data, aging analysis of the superconducting cable system under multiple working conditions is carried out, and decision support is provided for system maintenance.

Description

Technical Field

[0001] The present invention relates to the field of power system simulation, and in particular to an interactive simulation method for calculating aging parameters of a high-temperature superconducting cable under complex working conditions and a superconducting cable system thereof. Technical Background

[0002] With the surge in global electricity demand and the dramatic increase in urban load density, traditional power transmission technologies face significant challenges, including limited channel resources, low transmission efficiency, and environmental constraints. High-temperature superconducting cables, with their zero resistance and high current-carrying capacity, can significantly increase transmission capacity and reduce energy loss. They have become a key technology for addressing bottlenecks in urban power grid expansion and the challenges of integrating new energy sources. Currently, short-distance superconducting cable technology is maturing and entering the engineering application stage, achieving significant results in optimizing power supply in densely populated urban areas.

[0003] However, the long-term engineering application of superconducting cable systems still faces severe challenges: their operation needs to maintain stability in extremely low-temperature environments (such as -196°C liquid nitrogen temperature zone) and must cope with the coupling of multi-dimensional complex working conditions, including: (1) power fluctuations caused by intermittent output of renewable energy; (2) instantaneous large current shocks caused by short-circuit faults; (3) random / periodic load fluctuations; (4) extreme environmental conditions such as high temperature / high humidity / strong electromagnetic interference. These working conditions cause the system to be subjected to dynamic alternating stresses of electrical-thermal-mechanical multi-physical fields, and the performance evolution of superconducting materials, insulation media and cooling systems at low temperatures is essentially different from that of traditional cables. In particular, the aging mechanism of the cooling system lacks grid-level operation data support, and the aging assessment method of traditional cables is difficult to apply because it ignores the multi-field coupling effect.

[0004] Existing research on superconducting cable aging assessment is often based on single-field simulation models, such as those considering only the electromagnetic or thermal fields. These models fail to characterize the synergistic effects of dynamic interactions across multiple physical fields on the aging process. For example, power fluctuations from renewable energy sources can simultaneously trigger current steps and local temperature rises. Existing methods, lacking a mechanism for cross-model parameter interaction, struggle to capture the accelerated insulation degradation caused by these couplings. Furthermore, traditional simulation techniques suffer from a mismatch between model step size and dynamic characteristics, leading to cumulative errors when simulating transient faults or cyclical loads, resulting in distorted calculations of aging parameters.

[0005] The above defects make it difficult for existing methods to provide a reliable basis for life prediction and operation and maintenance strategy formulation of superconducting cable systems. Summary of the Invention

[0006] The purpose of the present invention is to provide an interactive simulation method for calculating the aging parameters of superconducting cables and a superconducting cable system thereof, so as to solve the problem of aging parameter calculation distortion caused by the inability of existing single-field simulation technology to characterize the coupling effect of multiple physical fields. By constructing a multi-model dynamic interactive interface through this method, the aging parameters of the superconducting cable system under complex working conditions are accurately calculated to support its safe operation throughout its life cycle.

[0007] To achieve the above objectives, one of the technical solutions provided by the present invention is: a superconducting cable system for interactive simulation of superconducting cable aging parameters, particularly a superconducting cable system for interactive simulation of high-temperature superconducting cable aging parameters under replicated working conditions, characterized in that it includes an electromagnetic transient model of the cable body, a transient thermal model of the cooling system, and a three-dimensional multi-field finite element model.

[0008] Interaction voltage / current and temperature / resistance parameters between the cable body electromagnetic transient model and the cooling system transient thermal model;

[0009] The cable body electromagnetic transient model and the three-dimensional multi-field finite element model interactively input waveforms and multi-field distribution parameters;

[0010] The cooling system transient thermal model and the cable body electromagnetic transient model exchange external and internal state parameters.

[0011] In the above-mentioned superconducting cable system, the cable body electromagnetic transient model is established based on the electrical characteristics of the cable and is used to simulate the voltage and current distribution of the cable under complex working conditions.

[0012] In the above-mentioned superconducting cable system, the transient thermal model of the cooling system is established based on the thermodynamic characteristics of the superconducting cable cooling system, and is used to simulate the temperature distribution and heat exchange power of the superconducting cable under complex working conditions.

[0013] In the above-mentioned superconducting cable system, the three-dimensional multi-field finite element model is established based on the structure and material properties of the superconducting cable, and is used to simulate the stress distribution and quench resistance of the superconducting cable under complex working conditions.

[0014] In the above-mentioned superconducting cable system, the system builds an electromagnetic transient model of the cable body, a transient thermal model of the cooling system, and a three-dimensional multi-field finite element model, inputs cable material properties, environmental parameters, and operating condition data, and constructs a model interaction interface through a simulation platform to achieve data interaction and coupling between multiple models, dynamically adjust simulation parameters, and ensure that the model step size accurately matches the dynamic characteristics of the system. It calculates the aging parameters of the superconducting cable system under complex working conditions, including voltage, current, temperature, quench resistance, heat exchange power, and stress distribution.

[0015] In order to achieve the above-mentioned object, the second technical solution provided by the present invention is: an interactive simulation method for calculating the aging parameters of a high-temperature superconducting cable under the replicating working conditions as in the above-mentioned system, comprising the following steps:

[0016] Step 1, simulation starts, start the program;

[0017] Step 2: Establish the electromagnetic transient model of the cable body:

[0018] Step 3: Input current parameters into the simulation interactive interface;

[0019] Step 4: Determine whether the current exceeds the critical current:

[0020] If yes, proceed to the step of calculating the quenched resistance of the superconducting tape, then connect to the three-dimensional multi-field finite element model, then switch to the transient thermal model of the cooling system, and then return to the cycle;

[0021] -If not, proceed to the next step of temperature judgment;

[0022] Step 5: Determine whether the temperature exceeds the critical temperature:

[0023] If yes, the process proceeds to the step of calculating the quench resistance of the superconducting tape, passing through the three-dimensional multi-field finite element model to the transient thermal model of the cooling system, and then returns to the cycle;

[0024] If not, execute the step of setting the superconducting tape resistance to 0, then calculate the heat generation and temperature and increase the simulation step size by 1;

[0025] Step 6: Determine whether the simulation time has been reached:

[0026] -If yes, the simulation ends;

[0027] -If not, return to step 3 and repeat the above steps until the simulation time condition is met.

[0028] In the above-mentioned interactive simulation method for calculating aging parameters of superconducting cables, the transient thermal model of the cooling system in steps 4 and 5 includes assigning an initial temperature value, calculating the resistivity of copper, and calculating the resistance of the copper skeleton.

[0029] In the above-mentioned interactive simulation method for calculating the aging parameters of a superconducting cable, the simulation equivalent circuit of the electromagnetic transient model of the cable body is: five parallel branches are connected through an AC power supply, namely:

[0030] The equivalent resistance R of the copper skeleton Cua , the equivalent resistance R of the metal stabilization layer of the superconducting tape sa1 、R sa2 In parallel, a parallel branch is formed, and the equivalent resistance R a1 、R a2The equivalent inductance L of the superconducting tapes are connected in series a1 , L a2 Then they are connected in parallel to the parallel branch, and the equivalent resistance Ra1 and R a2 There is a distributed capacitance C connected between the layers and a coupling inductance M between the superconducting tape layers.

[0031] In the above-mentioned interactive simulation method for calculating the aging parameters of superconducting cables, the interactive interface of the transient thermal model of the cooling system includes a calculation module of the transient thermal model of the cooling system, corresponding to the current I of the copper skeleton and superconducting tape input by the electromagnetic transient model of the cable body. cua , I a1 and I a2 The equivalent resistance R of the copper skeleton is output by multiplying the coefficients and inputting them into the transient thermal model calculation module of the cooling system. cua and the equivalent resistance R of the superconducting tape a1 and R a2 .

[0032] In the above-mentioned interactive simulation method for calculating the aging parameters of a superconducting cable, during the simulation of the electromagnetic transient model of the cable body, the temperature is calculated in real time using the following formula:

[0033]

[0034] Where ΔT is the temperature change; Δt is the simulation step length; I s is the current of the superconducting tape in the superconducting cable; R s is the equivalent resistance of the superconducting tape in the superconducting cable; I s is the current of the copper skeleton in the superconducting cable; R s is the equivalent resistance of the copper skeleton in the superconducting cable; C s is the specific heat capacity of the superconducting cable; V s is the specific volume of the superconducting cable; h is the unit volume heat transfer coefficient between the superconducting cable and liquid nitrogen.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] 1. The present invention realizes the comprehensive simulation of multiple physical parameters by constructing an interactive simulation model, which overcomes the limitation of traditional methods that rely on a single physical field model and improves the comprehensiveness and accuracy of aging parameter calculation;

[0037] 2. The present invention can adapt to the simulation requirements under various complex working conditions and provide a scientific basis for the design optimization and operation and maintenance decision-making of superconducting cable systems;

[0038] 3. By dynamically adjusting simulation parameters and ensuring the precise matching of the model step size with the system dynamic characteristics, the present invention significantly improves computational efficiency while ensuring simulation accuracy, thus providing technical support for the long-term safe operation of superconducting cable systems. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 This is a block diagram of the superconducting cable system of the present invention;

[0040] Figure 2 is an interactive simulation flow chart in the method of the present invention;

[0041] Figure 3 Schematic diagram of the circuit of the electromagnetic transient model of the superconducting cable in the present invention;

[0042] Figure 4 Schematic diagram of the cooling system transient thermal model interaction interface in the present invention;

[0043] Figure 5 is a schematic diagram of a three-dimensional multi-field finite element model in the present invention;

[0044] Figure 6 This is a schematic diagram of the three-phase current simulation results of the superconducting cable in the present invention under complex working conditions.

[0045] in Figure 5 Among them, 1. Copper skeleton, 2. Conductor layer, 3. Shielding layer, 4. Core wire. DETAILED DESCRIPTION

[0046] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0047] like Figure 1 As shown, an embodiment of the present invention provides an interactive simulation system for calculating aging parameters of high-temperature superconducting cables under complex working conditions. The superconducting cable system includes a cable body electromagnetic transient model, a cooling system transient thermal model, and a three-dimensional multi-field finite element model. The cable body electromagnetic transient model and the cooling system transient thermal model exchange voltage / current and temperature / resistance parameters. The cable body electromagnetic transient model and the three-dimensional multi-field finite element model exchange input waveforms and multi-field distribution parameters. The cooling system transient thermal model and the cable body electromagnetic transient model exchange external interaction and internal state parameters.

[0048] By building a cable body electromagnetic transient model, a cooling system transient thermal model, and a three-dimensional multi-field finite element model, and inputting cable material properties, environmental parameters, and operating condition data, a model interaction interface is constructed through the simulation platform to achieve data interaction and coupling between multiple models. Simulation parameters are dynamically adjusted to ensure that the model step size accurately matches the system's dynamic characteristics. Aging parameters of superconducting cable systems under complex operating conditions are calculated, including voltage, current, temperature, quench resistance, heat exchange power, and stress distribution.

[0049] The cable body electromagnetic transient model is established based on the electrical characteristics of the cable and is used to simulate the voltage and current distribution of the cable under complex working conditions.

[0050] The transient thermal model of the cooling system is established based on the thermodynamic characteristics of the superconducting cable cooling system and is used to simulate the temperature distribution and heat exchange power of the superconducting cable under complex working conditions.

[0051] A three-dimensional multi-field finite element model is established based on the structure and material properties of superconducting cables, and is used to simulate the stress distribution and quench resistance of superconducting cables under complex working conditions.

[0052] The material properties of the superconducting cable include the critical current density, thermal conductivity and mechanical strength of the superconducting material; the environmental parameters include ambient temperature, humidity and electromagnetic field strength.

[0053] The model interaction interface uses data mapping and conversion technology to achieve data interaction and coupling between the cable body electromagnetic transient model, the cooling system transient thermal model and the three-dimensional multi-field finite element model.

[0054] Dynamically adjust simulation parameters including simulation step size, convergence accuracy and computing resource allocation to ensure that the model step size accurately matches the dynamic characteristics of the system.

[0055] The simulation platform adopts high-performance computing technology and supports multi-model parallel computing to improve simulation efficiency and accuracy.

[0056] Complex working conditions include new energy power transmission scenarios, short circuit and grounding fault scenarios, load fluctuation scenarios and extreme environmental conditions scenarios.

[0057] New energy power transmission scenarios include power output fluctuations of wind power and photovoltaic power generation systems, as well as high voltage ride-through and low voltage ride-through scenarios. Superconducting cables withstand intermittent power changes and current fluctuations.

[0058] The short circuit and grounding fault scenario includes when a short circuit or grounding fault occurs in the power system, and the superconducting cable is subjected to instantaneous large current impact and electromagnetic force.

[0059] The load fluctuation scenario includes the load demand in the power system changing over time, and the superconducting cable being subjected to periodic or random load fluctuations.

[0060] Extreme environmental conditions include cable operation in high temperature, low temperature, high humidity and strong electromagnetic interference environments.

[0061] like Figure 2 As shown, the simulation process specifically follows: Step 1. Simulation Start: The process starts. Step 2. Cable Body Electromagnetic Transient Model: The electromagnetic transient model of the cable body is established. Step 3. Current Parameter Input Simulation Interface: Input current parameters into the simulation interface. Step 4. Determine whether the current exceeds the critical current: If so, proceed to "Calculate Superconducting Tape Quenching Resistance," then access the "3D Multi-Field Finite Element Model," and then to the "Cooling System Transient Thermal Model" (including assigning initial temperature values, calculating copper resistivity, and calculating copper skeleton resistance), and then return to the loop. If not, proceed to the next temperature determination step. Step 5. Determine whether the temperature exceeds the critical temperature: If so, proceed to "Calculate Superconducting Tape Quenching Resistance," then through the "3D Multi-Field Finite Element Model" to the "Cooling System Transient Thermal Model" (assigning initial temperature values, calculating copper resistivity and copper skeleton resistance), and then return to the loop. If not, execute "Set Superconducting Tape Resistance to 0," then "Calculate Heat Generation and Temperature," and increase the "Simulation Step Size" by 1. Step 6. Determine whether the simulation time has expired: If so, the process ends (simulation ends). If not, return to the "Current Parameter Input Simulation Interactive Interface" and repeat the above steps until the simulation time condition is met. This process uses the dual criteria of current and temperature, combined with the interaction of electromagnetic and thermal models, to achieve dynamic simulation of the superconducting tape state, ensuring accurate simulation and analysis of the system under different operating conditions.

[0062] The equivalent circuit of the superconducting cable electromagnetic transient simulation model is as follows Figure 3 As shown, RCua is the equivalent resistance of the copper skeleton, Rsa1 and Rsa2 are the equivalent resistances of the metal stabilization layer of the superconducting tape, Ra1 and Ra2 are the equivalent resistances of the superconducting tape, La1 and La2 are the equivalent inductances of the superconducting tape, and M and C are the coupling inductance and distributed capacitance between the superconducting tape layers, respectively.

[0063] The resistivity of the copper skeleton and superconducting tape in a high-temperature superconducting cable affects current distribution. The resistivity of copper is a function of temperature, while the resistivity of the superconducting tape is a binary function of temperature and current density. Furthermore, it is necessary to calculate the equivalent resistance and inductance of the superconducting tape, as well as the coupling inductance and distributed capacitance between the superconducting tapes.

[0064] Cooling system transient thermal model interactive interface such as Figure 4 As shown in the figure, HTS_Cable_A is the calculation module corresponding to the cooling system thermal model, I cua , I a1 and I a2The currents of the copper skeleton and superconducting tape corresponding to the electromagnetic transient model input are input into the cooling system thermal model calculation module by multiplying the coefficient by 1000. cua 、R a1 and R a2 These correspond to the equivalent resistances of the copper skeleton and superconducting tape calculated and output by the transient thermal model of the cooling system.

[0065] Furthermore, the current parameters are input into the simulation interaction interface, the cooling system thermal model is input, the temperature is assigned an initial value, and the copper resistivity and copper skeleton resistance are calculated. This is then interacted with the three-dimensional multi-field finite element model. Interactive simulation can be achieved through the system interface with the electromagnetic transient model of the cable body. Based on the thermodynamic parameters of the cooling medium, such as thermal conductivity and convective heat transfer coefficient, analysis of the high-temperature superconducting cable circuit shows that temperature is a significant factor affecting the equivalent parameters. Therefore, the temperature needs to be calculated in real time during the simulation using the following formula:

[0066]

[0067] Where ΔT is the temperature change; Δt is the simulation step size; Is is the current of the superconducting tape in the superconducting cable; Rs is the equivalent resistance of the superconducting tape in the superconducting cable; Is is the current of the copper skeleton in the superconducting cable; Rs is the equivalent resistance of the copper skeleton in the superconducting cable; Cs is the specific heat capacity of the superconducting cable; Vs is the specific volume of the superconducting cable; and h is the unit volume heat transfer coefficient between the superconducting cable and liquid nitrogen.

[0068] Schematic diagram of three-dimensional multi-field finite element model, such as Figure 5 As shown, the copper skeleton 1, conductor layer 2, shielding layer 3, and core wire 4 are identical for all three phases of a three-core turnkey high-temperature superconducting cable. The two shielding layers of superconducting tape are grounded at both ends, and the two conductor layers of superconducting tape are connected in parallel with the copper skeleton. The superconducting cable's geometric structure and material properties, including rated voltage, rated current, cable length, operating temperature, copper skeleton diameter, number of superconducting tapes, superconducting tape width, superconducting tape thickness, copper stabilization layer width, copper stabilization layer thickness, and torsion angle, are combined with the thermal conductivity, density, specific heat capacity, thermal expansion coefficient, and critical temperature of the materials involved in the superconducting cable. These parameters are used as simulation inputs. Heat conduction within the superconducting cable system is achieved through solid heat transfer physics, and the intensity of thermal radiation is calculated according to the Stefan-Boltzmann law.

[0069] Furthermore, it is determined whether the current exceeds the critical current and whether the temperature exceeds the critical temperature. The quench resistance of the superconducting tape is then calculated or the resistance is set to zero. Finally, the heat generation and temperature are calculated and the simulation step size is increased by 1. Through a simulation platform, such as a parallel computing framework based on a high-performance computing cluster, a model interaction interface is created. Data mapping and conversion techniques, such as field interpolation and time series alignment, are used to achieve dynamic data interaction between the electromagnetic transient model, the transient thermal model, and the three-dimensional multi-field finite element model. The current and voltage data output by the electromagnetic transient model are input into the transient thermal model to calculate the real-time resistance value and temperature changes. The three-dimensional multi-field finite element model is then used to calculate the multi-field distribution characteristic parameters of the superconducting cable system under complex operating conditions.

[0070] Furthermore, the simulation ends when the simulation end time is reached. According to the dynamic characteristics of the system, such as the millisecond-level transients of fault impacts and the minute-level changes of load fluctuations, the simulation parameters are adaptively adjusted. Based on the real-time allocation strategy of computing resources, the parallel computing efficiency of the model is optimized. For example, in the short-circuit fault scenario, a microsecond-level simulation step size is used to capture transient current impacts; in the periodic load fluctuation scenario, a second-level step size is used and a dynamic convergence accuracy threshold is set to calculate the aging parameters of the superconducting cable system under complex working conditions.

[0071] The simulation results of the equivalent resistance of superconducting cables are as follows: Figure 6 As shown in the figure, taking a complex operating condition as an example, Ra-Fault1 and Ra-Fault2 correspond to the equivalent resistance of the superconducting cable system when a single-phase short-circuit ground fault and a two-phase short-circuit fault occur in the power grid, respectively. When the instantaneous current in the superconducting tape falls below the critical current, the tape returns to a superconducting state. As the fault current flows through the tape, heat accumulation and temperature rise cause the equivalent resistance of the tape to gradually increase. Using the interactive simulation method proposed in this invention, the aging parameters of the high-temperature superconducting cable system under complex operating conditions are obtained.

[0072] The present invention has been described in detail above with reference to the embodiments of the accompanying drawings. A person skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details in the embodiments should not be construed as limiting the present invention. The scope of protection of the present invention shall be determined by the scope defined in the appended claims.

Claims

1. A superconducting cable system for interactive simulation of superconducting cable aging parameters, characterized in that: It includes the cable body electromagnetic transient model, cooling system transient thermal model and three-dimensional multi-field finite element model. Interaction voltage / current and temperature / resistance parameters between the cable body electromagnetic transient model and the cooling system transient thermal model; The cable body electromagnetic transient model and the three-dimensional multi-field finite element model interactively input waveforms and multi-field distribution parameters; The cooling system transient thermal model and the cable body electromagnetic transient model exchange external and internal state parameters.

2. A superconducting cable system according to claim 1, characterized in that: The cable body electromagnetic transient model is established based on the electrical characteristics of the cable and is used to simulate the voltage and current distribution of the cable under complex working conditions.

3. A superconducting cable system according to claim 1 or 2, characterized in that: The transient thermal model of the cooling system is established based on the thermodynamic characteristics of the superconducting cable cooling system and is used to simulate the temperature distribution and heat exchange power of the superconducting cable under complex working conditions.

4. A superconducting cable system according to claim 3, characterized in that: The three-dimensional multi-field finite element model is established based on the structure and material properties of the superconducting cable and is used to simulate the stress distribution and quench resistance of the superconducting cable under complex working conditions.

5. The superconducting cable system according to claim 1, characterized in that: The system builds an electromagnetic transient model of the cable body, a transient thermal model of the cooling system, and a three-dimensional multi-field finite element model, inputs cable material properties, environmental parameters, and operating condition data, and constructs a model interaction interface through the simulation platform to achieve data interaction and coupling between multiple models, dynamically adjust simulation parameters, and ensure the precise match between the model step size and the dynamic characteristics of the system. It calculates the aging parameters of the superconducting cable system under complex working conditions, including voltage, current, temperature, quench resistance, heat exchange power, and stress distribution.

6. An interactive simulation method for calculating aging parameters of a superconducting cable according to any one of claims 1 to 4, comprising the following steps: Step 1, simulation starts, start the program; Step 2: Establish the electromagnetic transient model of the cable body: Step 3: Input current parameters into the simulation interactive interface; Step 4: Determine whether the current exceeds the critical current: If yes, proceed to the step of calculating the quenched resistance of the superconducting tape, then connect to the three-dimensional multi-field finite element model, then switch to the transient thermal model of the cooling system, and then return to the cycle; -If not, proceed to the next step of temperature judgment; Step 5: Determine whether the temperature exceeds the critical temperature: If yes, the process proceeds to the step of calculating the quench resistance of the superconducting tape, passing through the three-dimensional multi-field finite element model to the transient thermal model of the cooling system, and then returns to the cycle; If not, execute the step of setting the superconducting tape resistance to 0, then calculate the heat generation and temperature and increase the simulation step size by 1; Step 6: Determine whether the simulation time has been reached: -If yes, the simulation ends; -If not, return to step 3 and repeat the above steps until the simulation time condition is met.

7. The interactive simulation method for calculating aging parameters of a superconducting cable according to claim 6, characterized in that: The transient thermal model of the cooling system in step 4 and step 5 includes assigning an initial temperature value, calculating the resistivity of copper, and calculating the resistance of the copper skeleton.

8. The interactive simulation method for calculating aging parameters of a superconducting cable according to claim 7, characterized in that: The simulation equivalent circuit of the electromagnetic transient model of the cable body is: five parallel branches are connected through an AC power supply, namely: The equivalent resistance R of the copper skeleton Cua , the equivalent resistance R of the metal stabilization layer of the superconducting tape sa1 、R sa2 In parallel, a parallel branch is formed, and the equivalent resistance R a1 、R a2 The equivalent inductance L of the superconducting tapes are connected in series a1 , L a2 Then they are connected in parallel to the parallel branch, and the equivalent resistance Ra1 and R a2 There is a distributed capacitance C connected between the layers and a coupling inductance M between the superconducting tape layers.

9. The interactive simulation method for calculating aging parameters of a superconducting cable according to claim 8, characterized in that: The interactive interface of the transient thermal model of the cooling system includes a calculation module of the transient thermal model of the cooling system, corresponding to the current I of the copper skeleton and superconducting tape input by the electromagnetic transient model of the cable body. cua , I a1 and I a2 The equivalent resistance R of the copper skeleton is output by multiplying the coefficients and inputting them into the transient thermal model calculation module of the cooling system. cua and the equivalent resistance R of the superconducting tape a1 and R a2 .

10. The interactive simulation method for calculating aging parameters of a superconducting cable according to claim 8, characterized in that: During the simulation of the cable body electromagnetic transient model, the temperature is calculated in real time using the following formula: Where ΔT is the temperature change; Δt is the simulation step length; I s is the current of the superconducting tape in the superconducting cable; R s is the equivalent resistance of the superconducting tape in the superconducting cable; I s is the current of the copper skeleton in the superconducting cable; R s is the equivalent resistance of the copper skeleton in the superconducting cable; C s is the specific heat capacity of the superconducting cable; V s is the specific volume of the superconducting cable; h is the unit volume heat transfer coefficient between the superconducting cable and liquid nitrogen.

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