52results about "Superconductive properties measurements" patented technology

The invention discloses a superconducting magnet quench detection early warning system and method based on skeleton current, and relates to the field of superconducting magnet quench detection, and the method comprises the steps: constructing an electrothermal coupling finite element model of a superconducting magnet and a conductive skeleton; simulating different quench events based on the electrothermal coupling finite element model; according to different quench events, quench judgment threshold values and different levels of quench severity index grading threshold values are determined; when the superconducting magnet is out of service, acquiring a skeleton current signal that the current of the superconducting magnet is shunted to the conductive skeleton; based on the skeleton current signal, according to the quench judgment threshold value and the quench severity index grading threshold value, grading early warning and protection response are conducted on the superconducting magnet quench, nondestructive testing can be conducted on the superconducting magnet quench, grading evaluation and optimization protection of the quench severity degree are achieved, and the safety of the superconducting magnet quench is improved. And the cost of the quench monitoring system is reduced.

This invention provides a method for detecting quench in a superconducting coil using leakage current, comprising the following steps: Step 1: Determine a first detection connection point on the main superconducting tape adjacent to a first current connection point, wherein the first detection connection point and the first current connection point are equipotential points; Step 2: Determine a second detection connection point on the sampling superconducting tape, wherein the second detection connection point and the second current connection point are equipotential points; Step 3: Connect a leakage current sampling circuit to the first and second detection connection points. If the leakage current sampling circuit detects leakage current, it is determined that quench exists in the main superconducting tape. This invention uses a leakage current sampling circuit to solve the problem of difficulty in sampling the quench voltage of superconducting magnets.

The present invention discloses a superconducting motor quench detection method and apparatus based on rotational symmetry of a motor, belonging to the technical field of superconducting motor quench detection. The method includes: acquiring terminal voltages of each group of superconducting magnets in a superconducting motor, where the superconducting motor is pre-divided into at least two unit motors by using the rotational symmetry of the motor, and superconducting magnets located at corresponding positions are selected from the at least two unit motors as a group of superconducting magnets; calculating an absolute value of a terminal voltage difference of each group of superconducting magnets; and judging whether the absolute value exceeds a preset threshold, and if the absolute value exceeds the preset threshold, determining that the superconducting magnets are in a quench state. According to the present invention, induced voltages coupled by the terminal voltages of superconducting magnets are eliminated.

The invention discloses a temperature-variable superconducting magnet low-temperature testing system and method, and relates to the technical field of superconducting magnet low-temperature testing. The system specifically comprises a superconducting magnet circulation loop which is configured to be communicated with a superconducting magnet to be tested to form a closed circulation channel for helium flow; the heat exchanger is arranged in the superconducting magnet circulation loop and is configured to cool helium in the superconducting magnet circulation loop through heat exchange with an external low-temperature medium; the helium circulating pump is arranged in the superconducting magnet circulating loop and is used for driving helium to perform forced flow circulation in the closed-loop circulating channel; the temperature control assembly comprises a heater arranged in the superconducting magnet circulation loop; wherein the flow and the temperature of helium entering the superconducting magnet to be tested are controlled by adjusting the helium circulating pump and the heater. The invention aims to design a test system which does not need an expensive refrigerator, is simple and convenient to operate and can realize accurate control of a wide temperature zone and a forced flow cooling environment.

The invention discloses a multi-field coupling fatigue test device and method for a high-temperature superconducting tape, and belongs to the field of superconducting tape fatigue tests.The multi-field coupling fatigue test device for the high-temperature superconducting tape comprises a fatigue testing machine, and a test container used for providing a low-temperature field is arranged in a test area of the fatigue testing machine; a clamp assembly used for fixing a sample to be tested is arranged in the experiment container, the clamp assembly is connected with a current assembly used for providing an electric field, and a magnet assembly used for providing a magnetic field is arranged in the experiment container. According to the multi-field coupling fatigue test device and method for the high-temperature superconducting strip, the limitation of an existing test means is broken through, and a reliable experimental platform and application value are provided for mechanical property research and service life evaluation of superconducting materials and other low-temperature service materials.

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 application discloses a quench characteristic test sample rod suitable for high magnetic field and quasi-adiabatic working conditions, which comprises a lead sleeve and a vacuum cavity module, the bottom end of the lead sleeve is detachably connected with the vacuum cavity module through a butt flange, the vacuum cavity module comprises a heat insulation centering mechanism arranged in an inner cavity, the upper and lower ends of the heat insulation centering mechanism are respectively provided with an upper copper ring and a lower oxygen-free copper ring, and an embedded copper heater is sleeved on the heat insulation centering mechanism, a plurality of superconducting tape samples to be tested are uniformly and circumferentially arranged on the outer wall of the embedded copper heater, and the two ends of each superconducting tape sample to be tested are respectively welded and fixedly connected with the upper copper ring and the lower oxygen-free copper ring. The application utilizes the indium compression sealing of the vacuum cavity module to provide quasi-adiabatic working conditions for testing, can reduce the heat exchange between the normal state region of the superconducting tape and the environment, reduce the heat loss of the superconducting tape in the conduction process, and thus improves the accuracy of the quench propagation characteristic test of the superconducting tape.

A superconducting magnet system for fusion reactor includes a superconducting magnet unit, an integrated power supply system and a quench diagnostic system. The superconducting magnet unit includes a superconducting coil module and a cryogenic refrigeration module. The superconducting coil module includes a toroidal field coil, a poloidal field coil and a centric solenoidal magnet module. The integrated power supply system includes a power supply module, a power supply monitoring module, and an alternating current (AC) / direct current (DC) power distribution module connected to the power supply module and the power supply monitoring module. The quench diagnostic system includes a resistive voltage diagnostic module, a distributed optical fiber diagnostic module and a voiceprint diagnostic module.

The application discloses a REBCO tape loss of superconductivity propagation test method and system, and relates to the technical field of superconducting material testing. The REBCO tape loss of superconductivity propagation test method gradually applies current and monitors voltage and temperature data to analyze the propagation characteristics and recovery process of the loss of superconductivity event. After the loss of superconductivity occurs, the system records and reduces the current in real time to analyze the recovery capacity of the tape. In combination with the loss of superconductivity propagation index and the recovery capacity index, corresponding safety test measures are performed for different test stages. The application comprehensively and dynamically analyzes the loss of superconductivity event of the REBCO tape by introducing the loss of superconductivity propagation index. The prior art usually only records the voltage and temperature data when the loss of superconductivity event occurs, and does not consider the speed and range of the loss of superconductivity propagation in the tape. By combining real-time voltage, temperature data and current changes and other factors, the propagation index can quantify the propagation process of the loss of superconductivity from one point to other points, and overcomes the limitations of the traditional method.

The invention discloses a segmented damage detection device for a high-temperature superconductive double-pancake coil, which belongs to the technical field of high-temperature superconductive strip testing and comprises a bottom support plate, a bottom plate, the high-temperature superconductive double-pancake coil, a cover plate and an external voltage detection device. The bottom plate is arranged on the bottom supporting plate, the high-temperature superconducting double-pancake coil is located on the upper surface of the bottom plate, and the cover plate covers the upper portion of the high-temperature superconducting double-pancake coil. A plurality of contact screws respectively pass through a plurality of array-distributed bottom plate test threaded holes or cover plate test threaded holes in the cover plate and the bottom plate, and are in contact with the surface of the high-temperature superconductive double-pancake coil through screwing, and the tops of the contact screws are connected with an external voltage detection device through welding; the voltage value between every two contact screws is tested, the position where abnormal voltage occurs is positioned, and the damaged section in the high-temperature superconducting double-pancake coil is judged. Through segmented detection of the array type threaded contacts, accurate positioning of the damaged position of the double-pancake coil is achieved, and the problem that in the prior art, a defect area is difficult to accurately recognize is solved.

The present application is applied to the technical field of superconducting applications, and discloses an offline system for a superconducting magnet and a refrigeration assembly, comprising a helium gas pipe assembly, a cold head, a self-sealing joint set, a two-position four-way valve set, a compressor, and a power supply that supplies power to the compressor. In the present application, the compressor and the cold head are connected by means of the helium gas pipe assembly, helium gas is used as a medium in contact with a thermal interface, and self-sealing joints are arranged at the connection and disconnection points of helium gas pipelines, so that the problems such as frost formation at the thermal interface can be avoided, greatly reducing the offline-to-reconnection time of the system. In addition, no foreign gas is introduced during the entire offline-to-reconnection process, thereby improving the reliability of the offline system for the superconducting magnet and the refrigeration assembly.

The invention belongs to the technical field of temperature sensing detection, and particularly relates to a high-sampling-rate temperature monitoring device and method and a high-sampling-rate temperature monitoring system for a superconducting magnet. The device comprises a signal acquisition module, a signal preprocessing module and a temperature compensation module, the signal acquisition module comprises a temperature sensor, an analog-to-digital conversion unit and a data storage unit, and the temperature sensor is used for acquiring a temperature signal of a to-be-detected environment; the analog-to-digital conversion unit is used for converting the temperature signal into a digital signal; the data storage unit is used for storing the digital signals according to time labels; the signal preprocessing module is used for converting the digital signal to obtain an initial temperature value at the current moment; the signal acquisition and processing frequencies of the signal acquisition module and the signal preprocessing module are greater than or equal to 500Hz; and the temperature compensation module is used for obtaining a real temperature value at the current moment through temperature compensation. Through combination optimization of software and hardware, the influence of thermal response delay is eliminated under high-frequency sampling, and the measurement error is reduced.

The invention relates to the technical field of high-temperature superconducting magnet detection, and discloses a detection method and system for a conduction cooling type high-temperature superconducting magnet, and the system comprises a magnetic field intensity detection module which is used for monitoring the magnetic field intensity of the high-temperature superconducting magnet in real time; the temperature detection module is used for detecting temperature information of all parts of the high-temperature superconducting magnet. And the current detection module is used for detecting the current flux of each part of the high-temperature superconducting magnet. And the judgment module is used for evaluating the health score of the high-temperature superconducting magnet according to the magnetic field intensity of the high-temperature superconducting magnet, the temperature distribution of the high-temperature superconducting magnet and the current distribution of the high-temperature superconducting magnet. And the early warning module is used for comparing the evaluated health score with a preset health score and sending an early warning notification according to a comparison result. Through cooperative work of all the modules, the operation state of the magnet can be effectively and comprehensively monitored, potential problems can be found in time, and an alarm notice is sent to an operator.

The application discloses a superconducting wire critical current data processing method and a data automatic processing system, and relates to the technical field of superconducting wire critical current measurement. The method comprises the following steps: obtaining superconducting wire U-I measurement data, and generating an initial U-I curve; determining a background voltage linear data segment according to the initial U-I curve and performing fitting to generate a background function straight line; subtracting the background function straight line from the initial U-I curve to obtain a background-subtracted U-I curve; and obtaining an electric field criterion critical current, a resistivity criterion critical current and a superconducting normal transition index based on the background-subtracted U-I curve. The application generates a background function straight line, subtracts the background function straight line from the initial U-I curve, obtains an electric field criterion critical current, a resistivity criterion critical current and a superconducting normal transition index based on the background-subtracted U-I curve, and improves the accuracy and data processing efficiency of critical current data processing.

The invention discloses a critical current uniformity detection probe for a superconducting tape. Wherein a detection part is arranged in a first direction of the iron core, and a to-be-detected superconducting strip passes through an excitation magnetic field collection gap in a second direction of the iron core; a magnetic signal channel is arranged between the iron core and the superconducting strip; a magnetic field signal generated by the shielding current on the surface of the superconducting tape to be detected is sent to the detection part through the magnetic signal channel and the iron core; the shielding part tightly attached to the iron core covers the two sides of the magnetic signal channel, core measurement areas of the two signal collection main faces are reserved, and the signal collection main faces are projections of the superconducting strip plane on the iron core plane. Only the strip magnetic field in the measurement area is allowed to act on the iron core, magnetic field interference in the peripheral area is reduced, and therefore the measurement spatial resolution is improved, and the measurement sensitivity and accuracy are improved. The spatial resolution of the measurement system is remarkably improved, and local defects and critical current changes of the strip can be accurately reflected.

The invention belongs to the field of superconducting testing, and discloses a superconducting cable and magnet low-temperature testing device and method based on combined refrigeration. The device comprises an outer Dewar used for providing a main body vacuum environment; the sample cavity is hung in the outer Dewar; the sample cavity comprises a cylindrical barrel, two ends of the cylindrical barrel adopt cover bodies with semi-ellipsoid structures, or the whole sample cavity is in an ellipsoid shape; the superconducting sample is hoisted in the sample cavity; the liquid helium pipeline comprises an inlet pipe and an outlet pipe; one ends of the inlet pipe and the outlet pipe are hermetically led out of the outer Dewar, and the other ends are connected with the sample cavity; the ends, led out of the outer Dewar, of the inlet pipe and the outlet pipe are connected with an external liquid helium supply source and a helium recovery device respectively. According to the invention, the liquid helium pipeline realizes introduction of liquid helium and recovery of helium, on one hand, a medium channel required by liquid helium cooling is provided for the superconducting sample, the refrigeration requirement of low-temperature testing is guaranteed, and on the other hand, working medium recycling is realized through helium recovery, and liquid helium consumption and testing cost are reduced.

The application discloses a device for testing bending characteristics of high-temperature superconducting cables and a testing method thereof, and belongs to the technical field of high-temperature superconducting technology. The device comprises a bending plate, a plurality of coaxial and different-radius circular-arc grooves are formed in the bending plate, and the circular-arc grooves are used for bending cables; and a conductive clamping module is arranged on the bending plate and located at both ends of the groove opening of the circular-arc groove. The conductive clamping module comprises a connected conductive column and a sample clamp, the conductive column is connected with a power cable, and the sample clamp is used for fixing the bent cable. The device for testing the bending characteristics of the high-temperature superconducting cables is used in cooperation with the bending plate and the conductive clamping module, effectively solves the inconvenience of repeatedly disassembling and assembling the external cable during the experiment and the external cable when the high-temperature superconducting cable is tested under different bending radii, simplifies the testing steps, effectively improves the testing efficiency, and reduces the sample damage risk caused by disassembling and assembling.

The application discloses a superconducting magnet quench detection and early warning system and method based on a skeleton current, relates to the field of superconducting magnet quench detection, and comprises the following steps: constructing an electro-thermal coupling finite element model of a superconducting magnet and a conductive skeleton; simulating different quench events based on the electro-thermal coupling finite element model; determining a quench judgment threshold and different levels of quench severity index grading thresholds according to different quench events; when the superconducting magnet quench occurs, obtaining a skeleton current signal of the current shunt of the superconducting magnet to the conductive skeleton; and based on the skeleton current signal, grading the quench of the superconducting magnet according to the quench judgment threshold and the quench severity index grading threshold to perform grading early warning and protection response. The application can nondestructively detect the quench of the superconducting magnet, realize grading evaluation and optimized protection of the quench severity, and reduce the cost of the quench monitoring system.

This invention discloses a superconducting magnet operation monitoring system and design method, belonging to the field of safety monitoring technology. The system includes a superconducting magnet placed inside a Dewar flask. The superconducting magnet is connected to a subsystem. The vacuum Dewar flask and a molecular pump unit are connected via a bellows, with a solenoid valve mounted on the bellows. The subsystem, power supply, solenoid valve, and molecular pump unit are all connected to a monitoring host. The monitoring host runs system software. The underlying software architecture includes equipment control modules mapped at the software level for the subsystem, power supply, solenoid valve, Dewar flask, and molecular pump unit. By integrating the equipment control modules corresponding to each functional module into the software framework, when the actual physical equipment changes, only simple modifications to the underlying equipment control modules are needed to integrate the new equipment into the system, achieving a universal monitoring system.

A superconducting magnet system for fusion reactor includes a superconducting magnet unit, an integrated power supply system and a quench diagnostic system. The superconducting magnet unit includes a superconducting coil module and a cryogenic refrigeration module. The superconducting coil module includes a toroidal field coil, a poloidal field coil and a centric solenoidal magnet module. The integrated power supply system includes a power supply module, a power supply monitoring module, and an alternating current (AC) / direct current (DC) power distribution module connected to the power supply module and the power supply monitoring module. The quench diagnostic system includes a resistive voltage diagnostic module, a distributed optical fiber diagnostic module and a voiceprint diagnostic module.

This disclosure provides a thermostat for horizontal testing of superconducting magnets, applicable to various sizes of curved deflection superconducting magnets, comprising: an outer Dewar for providing a vacuum testing environment for the curved deflection superconducting magnet; a cooling screen for reducing radiative heat leakage from the curved deflection superconducting magnet; a liquid helium service component, located above the outer Dewar for introducing liquid helium into the outer Dewar in liquid helium immersion cooling mode to cool the curved deflection superconducting magnet; a refrigerator, located above the outer Dewar for providing cooling to the interior of the outer Dewar in conduction cooling mode, or maintaining the liquid helium temperature inside the outer Dewar in liquid helium immersion cooling mode; a temperature-controlled curved tube, traversing the interior of the outer Dewar and passing through the curved deflection superconducting magnet, for performing horizontal testing on the curved deflection superconducting magnet; and a support component, connected to the outer Dewar for adjusting the attitude of the outer Dewar and the curved deflection superconducting magnet.

The present invention discloses a superconducting motor quench detection method and apparatus based on rotational symmetry of a motor, belonging to the technical field of superconducting motor quench detection. The method includes: acquiring terminal voltages of each group of superconducting magnets in a superconducting motor, where the superconducting motor is pre-divided into at least two unit motors by using the rotational symmetry of the motor, and superconducting magnets located at corresponding positions are selected from the at least two unit motors as a group of superconducting magnets; calculating an absolute value of a terminal voltage difference of each group of superconducting magnets; and judging whether the absolute value exceeds a preset threshold, and if the absolute value exceeds the preset threshold, determining that the superconducting magnets are in a quench state. According to the present invention, induced voltages coupled by the terminal voltages of superconducting magnets are eliminated.

The present application is applied to the technical field of superconducting applications, and discloses an offline system for a superconducting magnet and a refrigeration assembly, comprising a helium gas pipe assembly, a cold head, a self-sealing joint set, a two-position four-way valve set, a compressor, and a power supply that supplies power to the compressor. In the present application, the compressor and the cold head are connected by means of the helium gas pipe assembly, helium gas is used as a medium in contact with a thermal interface, and self-sealing joints are arranged at the connection and disconnection points of helium gas pipelines, so that the problems such as frost formation at the thermal interface can be avoided, greatly reducing the offline-to-reconnection time of the system. In addition, no foreign gas is introduced during the entire offline-to-reconnection process, thereby improving the reliability of the offline system for the superconducting magnet and the refrigeration assembly.

The invention discloses a self-adaptive monitoring method, system and device for a superconducting magnet and a storage medium, and relates to the field of superconducting magnets, and the method comprises the steps: forming detection circuit parameters based on the positions of a first voltage tap and a second voltage tap; determining an output voltage according to a potential difference between the first voltage tap and the second voltage tap; introducing an adjustment coefficient, and determining a balance condition of the adjustment coefficient according to the adjustment coefficient and the output voltage; based on a balance condition, determining an initial reference adjustment coefficient in a bridge balance state, and completing an initialization operation; on the basis of the initialization operation, entering a real-time monitoring mode, and performing adaptive monitoring on the superconducting magnet according to an initial reference adjustment coefficient and an output voltage detected in real time; the real-time monitoring mode comprises quench detection and health monitoring, the structure compactness and reliability are improved, and the functions of self-balancing quench detection, health monitoring and the like are achieved.

Described herein is a method (200) of forming a superconducting nanojunction in a superconducting material. The method (200) comprises, at step (201), pre-patterning a superconducting strip from the superconducting material. At step (202), the position, temperature and applied force of a thermal scanning probe is selectively controlled to selectively apply heat energy to a region of the superconducting strip under ambient atmospheric conditions to remove or change the superconducting properties of the region. This process forms a superconducting nanojunction between two sections of the superconducting material.

The invention discloses a high-field high-uniformity magnetic measurement device for a fusion large-aperture long-distance superconducting magnet, and relates to the technical field of superconducting magnet magnetic field measurement. The device comprises a support frame, a transfer connection support rod, a multi-angle uniformly-distributed magnetic measurement disc, a long-distance magnetic measurement rod and a three-dimensional Hall probe, the two supporting frames are arranged at the two ends of the device respectively, the transfer connecting supporting rod is connected between the supporting frames and the multi-angle evenly-distributed magnetic measurement disc, the three-dimensional Hall probe is installed on the long-distance magnetic measurement rod, and the long-distance magnetic measurement rod can move in the radial direction and the axial direction of the multi-angle evenly-distributed magnetic measurement disc. The magnetic field measuring device and the magnetic field measuring method are respectively used for measuring magnetic fields at different radial positions and measuring axial distribution of the magnetic fields. The device is designed according to the high-precision magnetic field measurement requirement of the superconducting magnet, has the advantages of being stable in structure and small in deformation, can meet complex magnetic field measurement conditions, and can provide key data support for optimization design of a fusion device.

Devices and methods for estimating localization lengths in hybrid superconductor-semiconductor quantum (HSSQ) devices are described. A method for estimating localization lengths in an HSSQ device comprising a set of plunger gates formed in a first layer of the HSSQ device and a set of top gates formed, above the set of plunger gates, in a second layer of the HSSQ device, includes obtaining measurements of nonlocal conductance values associated with the HSSQ device. The at least one junction associated with the HSSQ device attenuates one or more of the measured nonlocal conductance values associated with the HSSQ device. The method further includes normalizing the measured nonlocal conductance values to remove an effect of the attenuation caused by the at least one junction and extracting localization lengths based on the normalized nonlocal conductance values. The method further includes, using a processor, estimating the localization lengths for the HSSQ device.

The invention belongs to the technical field of high-temperature superconducting material performance detection, and particularly discloses a high-temperature superconducting material critical current nondestructive testing method and device, and the method comprises the steps: driving a superconducting strip to be tested to continuously move and pass through a cladding material pool, so that a cladding material is attached to the surface of the superconducting strip; the superconducting tape is controlled to penetrate through the shaping mold to adjust the cladding material to be laid on the superconducting tape in a preset size, and the cladding material is fixed to the superconducting tape in a first temperature environment through the cooling channel to form a primary packaging coating layer; driving the superconducting tape in the test slot, and contacting the opening and closing device through the coating layer in a second temperature environment to form electric contact so as to test the superconducting tape; the method has the following advantages that the coating nitrogen prevention of the strip is realized, and the nondestructive continuous critical current test is completed by stable electric contact at low temperature.

The invention provides a fast pulse superconducting magnet quench detection and protection system and method, and the system comprises superconducting coils which are a plurality of superconducting cables; the Quench-back coil and the superconducting coil are twisted in the same path, and the superconducting coil and the Quench-back coil are insulated from each other; the quench detection coil and the superconducting coil are wound in the same path and are insulated from each other; the wire inlet end of the shunt-wound quench detection coil is connected with the wire inlet end of the superconducting coil; the quench detection equipment is connected with the wire outlet end of the superconducting coil and the wire outlet end of the shunt-wound quench detection coil; the quench protection module is used for cutting off excitation power-up of the superconducting coil and closing the Quench-back coil under the condition that the quench detection equipment detects that the voltage between the wire outlet end of the superconducting coil and the wire outlet end of the parallel winding quench detection coil is larger than a threshold value, the Quench-back coil generates induction current through the magnetic flux change of the superconducting coil so as to generate heat, and the quench detection equipment detects that the voltage between the wire outlet end of the superconducting coil and the wire outlet end of the parallel winding quench detection coil is larger than the threshold value. And the superconducting coil is subjected to energy release. The system shields the inductance voltage, and quench detection and protection under fast pulse operation can be realized.

The invention discloses an REBCO strip quench propagation testing method and system, and relates to the technical field of superconducting material testing. According to the REBCO strip quench propagation test method, the propagation characteristic and the recovery process of a quench event are analyzed by gradually applying current and monitoring voltage and temperature data. And after quench occurs, the system records and reduces the current in real time, and analyzes the recovery capability of the strip. According to the method, the quench propagation index and the recovery capability index are combined, corresponding safety test measures are executed according to different test stages, and the quench event of the REBCO strip is comprehensively and dynamically analyzed by introducing the quench propagation index. In the prior art, only voltage and temperature data are recorded when a quenching event occurs, and the propagation speed and range of quenching in a strip are not considered. By combining factors such as real-time voltage, temperature data and current change, the propagation index can quantify the propagation process of quenching from one point to other points, and the limitation of a traditional method is overcome.