92 results about "Critical current" patented technology

The invention discloses a superconducting wire performance testing device which is characterized by comprising a sample rod, a conductor critical current testing framework, a conductor mechanical performance testing framework and a Dewar. During performance testing, the sample rod and the conductor critical current testing framework are detachably connected and located in the Dewar; or the sample rod and the conductor mechanical property testing framework are detachably connected and located in the Dewar. The testing device provided by the invention can be used for both critical current testing and mechanical performance testing.

The invention discloses a critical current nondestructive testing device for a joint-free high-temperature superconducting tape. The critical current nondestructive testing device comprises a testing tape reel, a fixing plate, a testing tape reel motor rotating shaft, an air heater, a tension sensor, a wire guide wheel, a magnetizing device, a double-hole Hall sensor, a liquid nitrogen Dewar and the joint-free high-temperature superconducting tape. The test tape reel is used for placing the joint-free high-temperature superconducting tape; the testing tape reel motor rotating shaft is used for connecting the motor and the testing tape reel, and the air heater is used for blow-drying the tape to prevent the surface of the superconducting tape from freezing. The tension sensor is used for carrying out real-time and on-line monitoring on the tension applied to the superconducting tape. The wire guide wheel is of a bearing supporting structure and comprises a built-in deep groove ball bearing or sliding bearing. And the magnetizing device is used for magnetizing the high-temperature superconducting tape. The double-hole Hall sensor can detect magnetic field distribution on the surface of the magnetized strip. The double-hole Hall sensor is provided with a double-hole structure, and the slit strip is detected through the wire passing double holes.

The invention relates to the technical field of electric variable data compensation, in particular to a metering error dynamic compensation method and system of an intelligent measuring switch. The method comprises the following steps: calculating to obtain phase delay compensation time of each sampling point based on original instantaneous current of each sampling point, equivalent excitation inductance of a current transformer, internal resistance of a secondary side winding, resistance value of a sampling resistor and a magnetic circuit saturation critical current value; performing high-order correction on the original instantaneous current to obtain a real current value of the sampling point; based on the original instantaneous voltage, the real current value and the phase delay compensation time of the sampling point in the metering period, the active power of the metering period is calculated so as to realize metering error dynamic compensation, and the accuracy of active power calculation of the intelligent measurement switch in the dynamic load switching process can be effectively improved.

The invention discloses a magnetic electronic device for generating track torque by using a metal vanadium or titanium track Hall effect and a manufacturing method thereof. The device comprises a substrate, a track Hall structure containing a vanadium or titanium layer, and a heavy metal layer and a ferromagnetic layer which are adjacent to the track Hall structure, when a charge current passes through the vanadium or titanium layer, a transverse track current is generated based on the track Hall effect, and the track current is injected into the ferromagnetic layer and then converted into an effective track torque for controlling the magnetization state of the ferromagnetic layer. Preferably, the ferromagnetic layer has a perpendicular magnetic anisotropy. According to the invention, the light transition metal vanadium or titanium is used as the track Hall material, the experiment proves that a huge track Hall angle greater than 0.45 can be obtained, and meanwhile, the resistivity of the material is lower, so that the shunting phenomenon can be reduced in an actual device, and the critical current density for realizing write-in flipping can be obviously reduced. The device is simple in structure and compatible with an existing semiconductor process, and a brand new material platform is provided for developing a low-power-consumption and high-density magnetic random access memory (MRAM).

The invention discloses a grid-control superconducting nanowire low-temperature thermometer and a preparation method thereof, and relates to the technical field of superconducting electronics and low-temperature detection. Comprising a substrate and a superconducting layer, and the superconducting layer comprises a grid electrode, a superconducting nanowire and an inductor; the grid electrode is vertical to the superconductive nanowire, has a distance from the superconductive nanowire and is used for electric field regulation and control; the superconducting nanowire is connected with the inductor and is used for responding to particles injected into the grid electrode and outputting a pulse signal; the inductor is connected with the superconducting nanowire and is used for inhibiting a latch-up effect under high bias current; the superconducting layer material is a superconducting thin film material with a superconducting transition temperature Tc exceeding a measurement temperature zone; according to the invention, (quasi) particle injection in the critical current process of the superconducting nanowire is regulated and controlled through the grid electric field, high-precision measurement of the low temperature is realized in combination with nonlinear response of the pulse counting rate and the temperature, and the device and the method have the advantages of wide temperature zone measurement, low noise, high sensitivity, low power consumption, small self-heating, simple measurement system and low cost.

The present invention relates to a high-temperature superconducting magnet and, more specifically, to: a high-temperature superconducting magnet achieving uniform critical current density using dissimilar metal wire materials; and a design parameter determination method thereof. To this end, in a high-temperature superconducting (HTS) magnet (100) formed by stacking an HTS coil (50) having a tape-type HTS conductor wire material wound thereon, the HTS coil (50) comprises: a first metal wire material (110) wound on the HTS coil (50); and a second metal wire material (130) that is made of a different metal from the first metal wire material (110) and wound while at least partially overlapping the first metal wire material (110) in the longitudinal direction of the first metal wire material (110), thereby forming a composite winding portion (140). Accordingly, the HTS magnet achieving uniform critical current density using dissimilar metal wire materials is provided, wherein the uniformity of the critical current density increases on the longitudinal cross-section of the HTS magnet (100).

The application discloses a method for improving critical current of REBCO superconducting layer and relates to the technical field of superconducting materials.The method for improving critical current of REBCO superconducting layer comprises the following steps: REBCO superconducting tapes are annealed in a pure oxygen atmosphere, quenched to 20-25 DEG C, and then the surface silver layer is removed by a chemical method, after which the REBCO superconducting tapes are annealed in a mixed atmosphere of ozone and oxygen, and a protective layer is deposited, so that the critical current of the REBCO superconducting layer is finally improved.The carrier concentration of the REBCO superconducting tapes can be effectively controlled through the specific multi-step oxidation process, so that the REBCO superconducting tapes break through the under-doped state commonly existing in the prior art, reach the over-doped level, and then the critical current performance of the tapes is significantly improved.The method has simple process, high stability and high industrial feasibility, and can meet the demand of higher current-carrying capacity of REBCO tapes in key fields such as power transmission and high-field magnets.

The invention provides a double-refrigeration device applied to high-temperature superconducting magnetic fluid propulsion, and relates to the technical field of high-temperature superconducting magnet cooling, the device comprises a magnet Dewar, a magnet liquid nitrogen cylinder, a fixing assembly and a conduction refrigeration system; the magnet liquid nitrogen cylinder is located in the magnet Dewar, one end of the fixing assembly is fixed to the side portion of the magnet liquid nitrogen cylinder, and the other end of the fixing assembly is fixed to the magnet Dewar; dewar protrusions are arranged on the circumferential side wall of the magnet Dewar, and the conduction refrigeration system is installed on the Dewar protrusions and exchanges heat with the superconducting magnet coil in the magnet liquid nitrogen cylinder. The superconducting magnet coil is also provided with a wiring port. The dual-refrigeration device provided by the invention breaks through the dilemma that the critical current cannot be tested after packaging, the liquid nitrogen cooling unit can independently, quickly and uniformly cool the packaged magnet, and the detachable sealing wiring port is arranged, so that the performance verification after packaging is realized, and the quality blind area is eliminated.

The invention discloses a non-contact continuous nondestructive testing device and method for critical current uniformity of a high-temperature superconducting tape, which is applied to the field of superconducting material detection, and comprises an excitation magnet for generating a background magnetic field and exciting the high-temperature superconducting tape to generate magnetization current; the measuring probe consists of a magnetic circuit iron core, a fluxgate sensor and a copper strip compensation loop; the fluxgate sensor and the copper strip compensation loop are respectively connected with the control and measurement circuit through a fluxgate power supply acquisition circuit and a copper strip compensation loop power supply circuit; and the control and measurement circuit is used for implementing PID (Proportion Integration Differentiation) control through closed-loop negative feedback when the fluxgate sensor detects that the net residual magnetic flux in the magnetic circuit iron core is not zero, generating magnetic flux which is equal to and opposite to the high-temperature superconducting strip in size in the copper strip compensation loop, and calculating critical current according to current in the copper strip compensation loop when the net residual magnetic flux is zero. According to the method, rapid and accurate measurement of the critical current uniformity of the high-temperature superconducting strip without depending on a Hall sensor and calibration back calculation is realized.

The invention discloses a preparation method of a high-stability bronze-process niobium-tin wire, and relates to the technical field of superconducting wire preparation, and the preparation method comprises the following steps: assembling a composite ingot according to a composite structure which sequentially comprises an outer copper matrix, an outer barrier layer, a bronze-based CuNb layer, an inner barrier layer and an inner copper matrix from outside to inside; the composite ingot is sequentially subjected to heat preservation extrusion and multi-pass cold drawing, and a composite wire is obtained; carrying out heat treatment on the composite wire to obtain a Ni3Sn wire; the outer blocking layer and the inner blocking layer are made of Nb or Ta or Nb alloy or Ta alloy or Ta / Nb alternating composite layers. The Ni3Sn wire is prepared by designing a composite structure with double barrier layers and combining heat preservation extrusion, multi-pass cold drawing and heat treatment, the critical current density and the residual resistance ratio of the wire are increased, and then the stability of the wire is improved.

The application relates to a robust optimization design method of an airborne high-temperature superconducting generator, which comprises the following steps: a baseline design scheme is obtained by establishing a two-dimensional electromagnetic finite element baseline model and a total loss accounting model of the generator containing electromagnetic characteristics of superconducting coils; a feasible technical scheme set is obtained by performing scheme screening on pre-engineering hard constraints; an optimal candidate scheme is determined by performing fast optimization on the feasible domain by using a Taguchi orthogonal test, and the optimal candidate scheme is determined by main effect and range analysis or signal-to-noise ratio calculation; and a final design scheme is determined by taking the minimum performance fluctuation or the maximum signal-to-noise ratio as a criterion by introducing cold end temperature fluctuation, air gap assembly deviation, tape critical current dispersion and load and speed disturbance as noise factors for robust verification. The application can efficiently obtain an optimal design with high performance, strong engineering feasibility and operation robustness under limited simulation resources, and is especially suitable for a megawatt airborne high-temperature superconducting power generation system.

This invention discloses a method for preparing Nb3Sn graphene composite superconducting absorbing material, comprising: preparing an Nb-Sn-Gr composite film using the sol-gel method; coating the Nb-Sn-Gr composite film onto a TaTi alloy rod and then loading it into a SnCu alloy tube, which is then loaded into a CuNb composite tube and drawn through multiple passes to obtain an inner-tin Nb3Sn subunit; loading the inner-tin Nb3Sn subunit into a Ta tube; uniformly filling the outside of the Ta tube with nitrogen-doped porous graphene-coated copper powder; loading it into an oxygen-free copper tube; and drawing through multiple passes to obtain the Nb3Sn graphene composite superconducting absorbing material. The Nb-Sn-Gr composite film and nitrogen-doped porous graphene-coated copper powder in this invention enable the Nb3Sn graphene composite superconducting absorbing material to maintain intrinsic superconducting properties such as high critical current density and upper critical field, while also possessing stable and efficient electromagnetic wave absorption capabilities under low temperature and strong magnetic field environments.

The application relates to the field of magnetic storage, in particular to a magnetic storage device, which comprises a fixed layer, a channel isolation layer and a free layer; the channel isolation layer is located between the fixed layer and the free layer; further comprising a non-magnetic layer, which is located on the free layer, and the material of the non-magnetic layer is different from that of the free layer. The application can effectively reduce the critical current for changing the magnetization direction of the free layer of the MTJ and reduce the volume of the magnetic storage device.

The application relates to a method and device for determining the breaking capacity of a vacuum switch device. The method comprises: obtaining critical current data of the vacuum switch device at each time when executing a simulation opening command; obtaining estimated current data of a target circuit to be cut off by the vacuum switch device; determining a target separation time range corresponding to the vacuum switch device; determining an adjustment strategy for adjusting the estimated current data according to the difference between the short-circuit current of the target circuit at each separation time within the target separation time range and the critical current data at the corresponding separation time; adjusting the estimated current data according to the adjustment strategy, and continuing the determination step of the adjustment strategy until the adjustment amount in the adjustment strategy is less than a preset adjustment amount, and determining the breaking capacity of the vacuum switch device according to the estimated current data when the adjustment amount is less than the preset adjustment amount. The method can improve the evaluation accuracy of the breaking capacity of the vacuum switch device.

The invention relates to a device for inducing a current flow in a load, also referred to as a flux pump. The device may comprise a rotor comprising at least one magnetic field generator configured to rotate with the rotor, one or more lengths of superconducting material arranged as an induction coil, a switch, and output terminals configured to connect to a load, the output terminals being connected in parallel with the switch. Rotation of the rotor may move the at least one magnetic field generator relative to the induction coil and switch, such that the magnetic field is periodically applied to the induction coil and switch to induce a current flow in the induction coil through the switch, and to reduce a critical current of the material within the switch, causing the switch to transition from a low-resistance state to a higher-resistance state.

The invention relates to an Nb3Sn superconducting material, a method for improving the critical current density of Nb3Sn through rare earth yttrium doping and application of the Nb3Sn superconducting material. The method comprises the following steps that the surfaces of a component A and a component B are attached and placed in a fixing device to form a diffusion couple, and the diffusion couple is subjected to diffusion annealing to obtain the Nb3Sn superconducting material; the component A comprises an Nb elementary substance ingot and / or an Nb-Y alloy ingot; the component B comprises a Cu-Sn alloy ingot and / or a Cu-Sn-Y alloy ingot; at least one of the component A and the component B contains Y. By doping the Y element, the growth rate of the Nb3Sn layer is increased, and the critical current density of the interface Nb3Sn superconducting material is improved. The constructed diffusion couple can visually compare the growth difference of the Nb3Sn layers in doped and undoped samples, and facilitates the analysis of the influence mechanism of the doped elements on the synthesis of the Nb3Sn superconducting material and the critical current density.

The invention relates to the technical field of anti-interference receiving, and discloses a tunable high-temperature superconducting amplitude limiter based on voltage regulation. Comprising a radio-frequency signal input end P1, a first impedance conversion node assembly, a superconducting amplitude limiting node L4, a direct-current bias regulation and control circuit for introducing bias current to the superconducting amplitude limiting node L4, a second impedance conversion node assembly and a radio-frequency signal output end P2 which are electrically connected in sequence, the first impedance conversion node assembly and the second impedance conversion node assembly are the same in structure, and each of the first impedance conversion node assembly and the second impedance conversion node assembly comprises a superconducting microstrip transmission line, a blocking capacitor and an impedance conversion node, on the premise that geometric structure parameters of the high-temperature superconducting amplitude limiting section are not changed, the working current density of the high-temperature superconducting amplitude limiting section can be changed within the range close to or away from the critical current density of the superconducting material by adjusting the magnitude of the bias current, and therefore tuning of the amplitude limiting threshold value and the power bearing capacity of the amplitude limiter is achieved.

The invention discloses a superconducting nanowire detector and a superconducting nanowire time-resolved single-photon spectrometer. The superconducting nanowire detector comprises a light response unit adopting a 1 * N discrete linear array structure, adjacent single detection units are spaced through delay lines, the delay lines on the two sides of the light response unit are connected with electrodes through gradient line units, and the gradient line units are arranged at the edge of the light response unit. Similar structure units which are in mirror symmetry with the gradual change line units are arranged on the two sides of the gradual change line units. The spectrometer comprises a displacement table, an optical fiber, an optical fiber focus lens, a diffraction grating, a focusing lens, the superconducting nanowire detector and a reading circuit. According to the detector, the current crowding effect can be avoided, the improvement of critical current and the reduction of dark count are realized, and the formation of an ultra-large-area superconducting nanowire linear array layout is facilitated. The spectrograph calibrates a spectrum through position mapping, wavelength information of incident light can be obtained only by measuring time difference, and the time resolution capability is achieved.

This invention discloses a method for evaluating the angle dependence of critical current in superconducting tapes, relating to the field of superconducting tape performance evaluation technology. The method includes: measuring the critical current values ​​of the superconducting tape at multiple magnetic field angles under constant environmental conditions; calculating the statistical average of the critical current values ​​and a quantitative index characterizing the dispersion of the data; and evaluating the angle dependence of the critical current of the superconducting tape based on the magnitude of the quantitative index. This method enables a quantitative comparison of the angle dependence of critical current in different superconducting tapes, is simple to calculate, has good versatility, and is suitable for superconducting tape design and material selection evaluation.

This application provides a superconducting winding assembly for a DC transformer and a DC transformer. In this application, a second superconducting layer is connected in series with a first superconducting layer, and the critical current of the second superconducting layer is less than that of the first superconducting layer. The second superconducting layer is configured as a trigger layer so that, in the event of a fault overcurrent, the second superconducting layer is the first to lose quench, its resistance increases, and predictable overall heating occurs within the second superconducting layer. An insulating and thermally conductive layer is used between the second and first superconducting layers to conduct the heat generated by the second superconducting layer losing quench due to the fault current to the first superconducting layer, causing its temperature to rise and it to lose quench. This results in a sharp increase in the overall resistance of the superconducting winding. This application utilizes the material of the superconducting winding to respond to fault overcurrents and achieve impedance adjustment, resulting in a faster response speed and smaller size. Using the second superconducting layer as a trigger layer avoids localized melting, and impedance can automatically recover after the fault is cleared.

The invention relates to the technical field of superconducting materials, and discloses a multi-element rare earth barium copper oxide high-temperature superconducting thin film and a preparation method thereof. In order to solve the technical problems that the pinning effect of an artificial magnetic flux pinning center of a high-temperature superconducting material is poor and the critical current density under a high magnetic field is low, the rare earth barium copper oxide is prepared by co-doping at least three rare earth elements at a rare earth site; an artificial magnetic flux pinning center of a perovskite oxide BaZrO3 and a double perovskite oxide Ba2YNbO6 is introduced into the rare earth barium copper oxide, and a multi-scale pinning system from the atomic scale to the nanoscale is formed in the superconducting thin film through atomic scale mismatch and introduction of the artificial magnetic flux pinning center; effective pinning of magnetic flux vortexes of different states and different sizes is achieved, and therefore the critical current density of the high-temperature superconducting material under the low-temperature high magnetic field is effectively improved finally.

The invention discloses a linear electromagnetic relay closing speed control method adaptive to a stray magnetic field, and the method comprises the steps: S1, detecting the current of a linear electromagnetic relay in real time, and carrying out the current limiting control of the linear electromagnetic relay when the current reaches a peak value and is detected to fall to a critical current value; s2, obtaining a current current limiting value according to the correction coefficient, the initial limit and the current peak value, and controlling the current to be close to the current limiting value; s3, when current limiting failure is detected, updating the current limiting coefficient until the current limiting coefficient is reduced to a preset minimum coefficient; and S4, in the holding stage, the power supply limits the current to a relatively low value according to a preset minimum coefficient. According to the invention, the reliability and safety of the linear electromagnetic relay in a stray magnetic field can be enhanced; the transformation amplitude of the existing product is small, additional materials are few, the method is mainly achieved through a control strategy and configuration of a small number of universal devices, and the transformed linear electromagnetic relay is convenient for large-scale production and assembly.

The application discloses a kind of non-contact high-temperature superconducting tape critical current uniformity continuous nondestructive testing device and method, applied to superconducting material detection field, comprising: excitation magnet, for producing background magnetic field, excitation high-temperature superconducting tape generates magnetization current;Measuring probe, by magnetic circuit core, fluxgate sensor, copper band compensation loop is formed;Fluxgate sensor and copper band compensation loop are connected with control and measurement circuit respectively by fluxgate power supply acquisition line and copper band compensation loop power supply line;Control and measurement circuit, for when fluxgate sensor detects that net residual magnetic flux in magnetic circuit core is not 0, PID control is implemented by closed loop negative feedback, in copper band compensation loop, the magnetic flux that is equal to high-temperature superconducting tape, opposite, and according to current in copper band compensation loop when net residual magnetic flux is 0, calculate critical current.The application realizes the fast, accurate measurement of high-temperature superconducting tape critical current uniformity without depending on Hall sensor and without calibration inverse calculation.

This invention belongs to the field of superconducting wire technology and discloses a high-performance, low-loss NbTi superconducting wire and its preparation method. First, an NbTi rod, an Nb cylinder, and a copper tube are assembled to obtain an NbTi / Nb / Cu composite rod. After removing the surface copper, an NbTi / Nb composite rod is obtained. This NbTi / Nb composite rod is then inserted into a drilled Cu alloy ingot and fitted with a first oxygen-free copper tube to obtain a hexagonal composite rod. Finally, this hexagonal composite rod is arranged in a second oxygen-free copper tube, the gaps are filled, and then subjected to multiple drawing passes, multiple aging heat treatments, and twisting to obtain the NbTi superconducting wire. This method effectively improves the problem of poor core wire deformation in conventional NbTi / Cu superconducting wires, increases the critical current density of the wire, and reduces AC losses, meeting the requirements for superconducting magnets in nuclear fusion devices and other applications.

The technology relates to electrical devices comprising a length of superconducting material with a critical current when current travels in one direction is different to a critical current of the length of superconducting material when current travels through the length of superconducting material in an opposite direction. The electrical device may further comprise a magnetic field generator comprising two permanent magnets positioned on the same side of the length of superconducting material and arranged substantially anti-parallel to each other. The polar axes of the two permanent magnets may be oriented substantially perpendicular to the faces of the length of superconducting material.

The invention discloses a non-planar coil electromagnetic characteristic simulation method based on a superconducting bunched cable. Relates to the technical field of superconducting magnet electromagnetic simulation. According to the method, a non-planar coil three-dimensional model is firstly built to solve the configuration distribution of a magnetic field, the minimum boundary and section position of the magnetic field are determined, grid independence verification is carried out, local critical current is evaluated by using a self-consistent model after coordinate migration, and the minimum value of the local critical current of each section is taken as global critical current. The problems of high simulation degree of freedom and poor convergence of the coil are effectively solved, electromagnetic characteristics such as critical current and the like can be accurately simulated, and technical support is provided for design optimization and safe operation of the non-planar coil based on the superconducting bunched cable.

The invention discloses a method for improving critical current of an REBCO superconducting layer, and relates to the technical field of superconducting materials. The method for improving the critical current of the REBCO superconducting layer comprises the following steps: performing annealing treatment on an REBCO superconducting strip in a pure oxygen atmosphere, quenching to 20-25 DEG C, removing a surface silver layer by a chemical method, annealing in a mixed atmosphere of ozone and oxygen, depositing a protective layer, and finally realizing the improvement of the critical current of the REBCO superconducting layer. Through a specific multi-step oxidation process, the carrier concentration of the REBCO superconducting strip can be effectively regulated and controlled, the common under-doping state in the prior art is broken through, the over-doping level is achieved, and then the critical current performance of the strip is remarkably improved. The method is simple in process, high in stability and industrial feasibility, and capable of meeting the requirement for higher current-carrying capacity of the REBCO strip in the key fields of power transmission, high-field magnets and the like.

The present invention relates to: a deterioration inspection device capable of protecting a superconducting coil from high current during deterioration inspection of the superconducting coil; and a method for manufacturing same. A deterioration inspection device according to the present invention comprises: a power supply unit for supplying power to a superconducting coil to be tested; a plurality of connection bus bars for connecting the superconducting coil and the power supply unit in parallel; a protection bus bar connected in parallel to the superconducting coil and the power supply unit and connecting the plurality of connection bus bars; a sheet resistor inserted between each of the connection bus bars and the protection bus bar; a first current sensor that measures a current flowing through the superconducting coil; and a second current sensor that measures a current flowing through the protection bus bar. When a high current that is less than a critical current of the superconducting coil is applied to the superconducting coil by the power supply unit, if a current value measured by the first current sensor is greater than a current value measured by the second current sensor, it is determined that the superconducting coil is defective, thereby protecting the superconducting coil from overcurrent.

The invention relates to a component with a surface having a step separating an upper level (3) of the surface from a lower level (4) of the surface, with superconductors (8, 9, 10) on the surface, wherein a Josephson contact is provided at each edge of the step, wherein each Josephson contact is formed by two superconductors and a barrier (11, 12) between the superconductors (8, 9, 10), characterized in that the critical current of one Josephson contact is greater than the critical current of the other Josephson contact. The invention relates to a magnetic field sensor with the component and a method for its manufacture.

The embodiment of the invention discloses a method for evaluating overcurrent impact damage of a high-temperature superconducting tape. The method comprises the following steps: acquiring critical current of the high-temperature superconducting tape; impact current is applied to the high-temperature superconducting strip, and a damaged sample is obtained; the impulse current is lower than or higher than the critical current; performing X-ray diffraction on the damaged sample to obtain an XRD spectrogram corresponding to the damaged sample; determining a 005 crystal face diffraction peak in the XRD spectrogram of the damaged sample; calculating the full width at half maximum of the 005 crystal face diffraction peak of the damaged sample; and judging the damage degree of the high-temperature superconducting strip according to the comparison relationship between the full width at half maximum of the 005 crystal face diffraction peak of the damaged sample and the widening amplitude of the full width at half maximum of the intact sample. According to the method, a quantitative judgment standard between the microscopic lattice parameters and the damage degree is determined by analyzing the damaged sample, so that a key data support and a theoretical basis are provided for safety application and service life evaluation of the high-temperature superconducting strip.