A transient high heat load control system and method for a nuclear fusion device

Abstract

The present invention discloses a transient high heat load control system and method for a nuclear fusion device, relating to the technical field of nuclear reaction heat load control; the control system includes a measurement component, a processor, a controller, and an air injection execution component; the measurement component includes a target plate heat flux measurer and an amplitude measurer, the processor is electrically connected to the measurement component, and the processor includes a heat flux calculation module, an amplitude calculation module, and a judgment module; the heat flux calculation module can calculate the heat load of the outer target plate and the inner target plate within a unit time period according to the target plate heat flux signal; the amplitude calculation module can calculate the amplitude and frequency of the amplitude signal according to the amplitude signal; the judgment module can compare the outer target plate load, the outer target plate load, the amplitude, and the frequency with corresponding preset values and output an action signal; the controller is electrically connected to the processor and can control the action of the air injection execution component according to the action signal to protect the first wall material without affecting the overall parameters of the plasma. The control method is based on the aforementioned system.

Description

Technical Field

[0001] The present invention relates to the technical field of nuclear reaction heat load control, and particularly relates to a transient high heat load control system and method for a nuclear fusion device. Background Art

[0002] In the research of controlled nuclear fusion, the high confinement (H) mode operation has higher plasma temperature, density parameters and better energy confinement performance. However, the H mode operation is usually accompanied by transient events such as recurrent bursts of edge localized modes (ELMs). The occurrence of these transient events will lead to instantaneous transport of a huge amount of energy outward, thus causing serious damage to materials such as divertor target plates.

[0003] Currently, generally, gas injection is carried out in the scrape-off layer region to form an edge radiation belt or cause boundary detachment to alleviate or avoid the damage caused by these transient events to the divertor target plate. However, during the operation of the fusion device, heat load control is not required throughout the entire operation process. For example, during the low confinement (L) mode operation or when there are no large transient events occurring, heat load control is not required, and gas injection during these stages will instead affect the improvement of plasma parameters. Summary of the Invention

[0004] Aiming at the technical problem that the improvement of plasma parameters is affected when controlling the nuclear fusion heat load in the prior art, the present invention provides a transient high heat load control system and method for a nuclear fusion device, which can identify transient events during the operation of the fusion device and inject gas to the boundary in a timely manner according to requirements, so as to protect the first wall material without affecting the overall plasma parameters.

[0005] The present invention is achieved through the following technical solutions:

[0006] In a first aspect, the present invention provides a transient high heat load control system for a nuclear fusion device, including a measurement component, a processor, a controller and a gas injection execution component; the measurement component includes a target plate heat flux measurer and an amplitude measurer, the target plate heat flux measurer is used to measure the heat flux density transported from the plasma received by the inner target plate and the outer target plate in the divertor, and the amplitude measurer is used to measure the instability amplitude of the heat flux; the processor is electrically connected to the measurement component, and the processor includes a heat flux calculation module, an amplitude calculation module and a judgment module; the heat flux calculation module can calculate the outer target plate heat load and the inner target plate heat load per unit time period according to the target plate heat flux signal; the amplitude calculation module can calculate the amplitude value and frequency of the amplitude signal according to the amplitude signal; the judgment module can compare the outer target plate heat load, the inner target plate heat load, the amplitude value and the frequency with corresponding preset values, and output an action signal according to the comparison result; the controller is electrically connected to the processor and can control the gas injection execution component to perform corresponding actions according to the action signal.

[0007] The transient high heat load control system of the nuclear fusion device provided by the present invention, the measurement component can measure the heat flux density transported from the plasma received by the inner target plate and the outer target plate in the divertor, and the instability amplitude of the heat flux. The processor can calculate the heat load of the outer target plate and the heat load of the inner target plate per unit time according to the target plate heat flux signal, calculate the amplitude and frequency of the amplitude signal according to the amplitude signal, and the processor can compare the foregoing parameters with preset values and output an action signal according to the comparison result. The controller can control the gas injection execution component to perform corresponding actions according to the action signal. Thus, through the heat load of the outer target plate and the heat load of the inner target plate per unit time in the divertor, and the amplitude and frequency of the heat flux instability amplitude, large-scale transient event burst phenomena such as plasma ELM can be identified. Thus, according to the type of transient event inside the nuclear fusion reaction, the gas injection execution group is controlled to inject control gas into the divertor, so as to relieve or avoid the damage caused by the transient event to the divertor target plate, and further extend the service life of the divertor target plate.

[0008] Since this application can identify large-scale transient event burst phenomena such as plasma ELM, and only needs to inject control gas to the reaction boundary (inject gas in the scrape-off layer area to form an edge radiation belt or cause a boundary) according to the demand during the burst transient event, therefore, while protecting the first wall material, it does not affect the overall parameters of the plasma.

[0009] In an optional embodiment, it further includes a data collector and a data memory; the data collector is electrically connected to the measurement component, and the data collector can collect the measurement signals measured by the measurement component; the data memory is electrically connected to the data collector and the processor, and the data memory can collect the data signals output by the data collector and transmit the data signals to the processor.

[0010] By collecting the measurement signals of the measurement component through the data collector, the distortion of the measurement signals obtained by the measurement component during transmission can be avoided, and by storing the data signals through the data memory to record the historical data of the measurement signals obtained by the measurement component, it can be provided to researchers for detailed analysis to optimize the feedback control model.

[0011] In a second aspect, the present invention provides a method for controlling transient high heat load of a nuclear fusion device, including the following steps:

[0012] S10. Collect the heat flux density transported from the plasma received by the inner target plate and the outer target plate in the divertor, and the instability amplitude of the heat flux;

[0013] S20. Calculate the heat load of the outer target plate and the heat load of the inner target plate per unit time according to the target plate heat flux signal, and calculate the amplitude and frequency of the amplitude signal according to the amplitude signal;

[0014] S30. Compare the external target plate heat load, the internal target plate heat load, the amplitude, and the frequency with corresponding preset values;

[0015] S40. Control the action of the gas injection execution component according to the comparison result in step S30 to control the heat load of the fusion device.

[0016] The transient high heat load control method for a nuclear fusion device provided by the present invention identifies large-scale transient event burst phenomena such as plasma ELMs through the external target plate heat load, the internal target plate heat load, the amplitude, and the frequency of heat flux instability within a unit time period of the divertor. Thus, according to the type of transient event inside the nuclear fusion reaction, the gas injection execution group is controlled to inject control gas into the divertor, thereby alleviating or avoiding damage to the divertor target plate caused by transient events, and further extending the service life of the divertor target plate. Moreover, when a transient event breaks out, control gas is injected to the reaction boundary according to requirements (injecting gas in the scrape-off layer region forms an edge radiation belt or causes a boundary). Therefore, while protecting the first wall material, the overall parameters of the plasma can be unaffected.

[0017] Specifically, in step S30, the calculation model of the external target plate heat load is:

[0018]

[0019] In the formula, t represents time.

[0020] Specifically, in step S30, the calculation model of the internal target plate heat load is:

[0021]

[0022] In the formula, t represents time.

[0023] Specifically, in step S30, the calculation model of the amplitude is:

[0024] s(t) = D(t) / D(t - 500:t) min

[0025] In the formula, t represents time, and D(t - 500:t) min represents the minimum value from 5 ms before the current moment to the current moment.

[0026] Specifically, in step S30, the calculation model of the frequency is:

[0027] f(t) = 10 * N(t - 10000:t)

[0028] In the formula, t represents time, and N(t - 10000:t) represents the number of instability peaks within 100 ms.

[0029] Specifically, in step S40: when the external target plate heat load, the internal target plate heat load, the amplitude, and the frequency are all less than the preset values, the gas injection execution component is controlled to standby;

[0030] When the external target plate heat load, the internal target plate heat load, the amplitude, and the frequency are all greater than the preset values, the gas injection execution component is controlled to inject control gas into the fusion device.

[0031] Specifically, the preset values of the external target plate heat load and the internal target plate heat load are both 0.5 MJ / m 2 。

[0032] Specifically, the preset value of the frequency is 1.

[0033] Compared with the prior art, the present invention has the following advantages and beneficial effects

[0034] 1. The transient high heat load control system of the fusion device provided by the present invention. The measurement component can measure the heat flux density transported from the plasma received by the inner target plate and the outer target plate in the divertor and the instability amplitude of the heat flux. The processor can calculate the external target plate heat load and the internal target plate heat load per unit time according to the target plate heat flux signal, calculate the amplitude and frequency of the amplitude signal according to the amplitude signal, and the processor can compare the foregoing parameters with the preset values and output an action signal according to the comparison result. The controller can control the gas injection execution component to perform corresponding actions according to the action signal. Thus, through the external target plate heat load and the internal target plate heat load per unit time of the divertor, and the amplitude and frequency of the instability amplitude of the heat flux, large-scale transient event explosion phenomena such as plasma ELM can be identified. Then, according to the type of transient event inside the nuclear fusion reaction, the gas injection execution group is controlled to inject control gas into the divertor, thereby alleviating or avoiding the damage caused by the transient event to the divertor target plate, and further extending the service life of the divertor target plate. And only when a transient event breaks out, control gas is injected into the reaction boundary according to the demand (injecting gas in the scrape-off layer area forms an edge radiation belt or causes a boundary). Therefore, while protecting the first wall material, the overall parameters of the plasma are not affected.

[0035] 2. The transient high heat load control method for the nuclear fusion device provided by the present invention can identify the outbreak phenomena of large-scale transient events such as plasma ELMs through the heat load of the outer target plate, the heat load of the inner target plate, and the amplitude and frequency of the heat flux instability amplitude per unit time in the divertor. Thus, according to the type of transient event inside the nuclear fusion reaction, the gas injection execution group is controlled to inject the control gas into the divertor, thereby alleviating or avoiding the damage caused by the transient event to the divertor target plate, and further extending the service life of the divertor target plate. Moreover, only when a transient event breaks out, the control gas is injected into the reaction boundary according to the demand (gas injection in the scrape-off layer region forms an edge radiation belt or causes a boundary). Therefore, while protecting the first wall material, it does not affect the overall parameters of the plasma. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0037] In the drawings:

[0038] Figure 1 is a schematic diagram of the transient high heat load control system for the nuclear fusion device according to the embodiment of the present invention;

[0039] Figure 2 is a logical schematic diagram of the transient high heat load control method for the nuclear fusion device according to the embodiment of the invention.

[0040] Marks in the drawings and corresponding component names:

[0041] 10 - Plasma, 20 - Measurement component, 21 - Target plate heat flux measurer, 22 - Amplitude measurer, 30 - Data collector, 40 - Data storage, 50 - Processor, 51 - Heat flux calculation module, 52 - Amplitude calculation module, 53 - Judgment module, 60 - Controller, 70 - Gas injection execution component. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0042] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application.

[0043] It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0044] In the description of the embodiments of the present application, the terms "center", "up", "down", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inside", "outside", "front", "back", "top", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the products of the application are conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. They are merely for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0045] Example 1

[0046] Combination Figure 1 The present embodiment provides a transient high heat load control system for a nuclear fusion device, comprising a measuring component 20, a processor 50, a controller 60 and a gas injection actuator 70; the measuring component 20 comprises a target plate heat flux measuring device 21 and an amplitude measuring device 22, the target plate heat flux measuring device 21 is used to measure the heat flux density transported from the plasma 10 received by the inner target plate and the outer target plate of the divertor, and the amplitude measuring device 22 is used to measure the instability amplitude of the heat flux; the processor 50 is electrically connected to the measuring component 20, and the processor 50 comprises a heat flux calculation module 51, an amplitude calculation module 52. 2 and a judgment module 53; the heat flux calculation module 51 can calculate the heat load of the inner and outer target plates and the heat load of the inner target plate in a unit time period according to the heat flux signal of the target plate; the amplitude calculation module 52 can calculate the amplitude and frequency of the amplitude signal according to the amplitude signal; the judgment module 53 can compare the heat load of the outer target plate, the heat load of the inner target plate, the amplitude and the frequency with the corresponding preset values, and output an action signal according to the comparison result; the controller 60 is electrically connected to the processor 50, and can control the gas injection execution component 70 to perform corresponding actions according to the action signal.

[0047] Specifically, the target plate heat flux meter 21 is a divertor target plate probe, which can directly measure the number of particles and particle energy hitting the target plate from the plasma, and the target plate heat flux power can be calculated by the number of particles per unit time and the unit particle energy; the amplitude meter 22 is a spectrometer, which judges the severity of the instability outbreak by receiving the photons radiated by the transition of high-energy state electrons in hydrogen ions or deuterium ions to low-energy states. The more severe the transition process is, the more times it occurs, and the H α or D α The higher the amplitude of the signal, the more instability is paroxysmal. When there is no burst, the signal amplitude is very low, from which its frequency can be obtained.

[0048] On this basis, this embodiment further includes a data collector 30 and a data storage 40; the data collector 30 is electrically connected to the measurement component 20, and the data collector 30 can collect the measurement signals measured by the measurement component 20; the data storage 40 is electrically connected to the data collector 30 and the processor 50, and the data storage 40 can collect the data signals output by the data collector 30 and transmit the data signals to the processor 50. Among them, by collecting the measurement signals of the measurement component 20 through the data collector 30, the distortion of the measurement signals obtained by the measurement component 20 during transmission can be avoided, and by storing the data signals through the data storage 40 to record the historical data of the measurement signals obtained by the measurement component 20, it can be provided to researchers for detailed analysis to optimize the feedback control model.

[0049] It should be understood that the gas injection execution component 70 is a component in the prior art that injects gas into the scraping layer area to form an edge radiation belt or cause a boundary, that is, a divertor supersonic molecular beam injection system. For the control gas, it is determined according to the type of transient events (sawtooth, tearing mode, edge localized mode, etc.), and is usually the main ion or impurity particle. At the same time, for the pulse width length and frequency of the control gas, they are also determined according to the type of transient events.

[0050] In summary, the measurement component 20 can measure the heat flux density and the instability amplitude of the heat flux transported from the plasma 10 received by the inner target plate and the outer target plate in the divertor. The processor 50 can calculate the outer target plate heat load and the inner target plate heat load per unit time according to the target plate heat flux signal, calculate the amplitude and frequency of the amplitude signal according to the amplitude signal, and the processor 50 can compare the foregoing parameters with the preset values and output an action signal according to the comparison result. The controller 60 can control the gas injection execution component 70 to perform corresponding actions according to the action signal. Thus, through the outer target plate heat load and the inner target plate heat load per unit time in the divertor, and the amplitude and frequency of the heat flux instability amplitude, the large-scale transient event burst phenomena such as the plasma 10 ELM can be identified. Thus, according to the type of transient events inside the nuclear fusion reaction, the gas injection execution group is controlled to inject the control gas into the divertor, so as to relieve or avoid the damage caused by the transient events to the divertor target plate, and further extend the service life of the divertor target plate.

[0051] That is to say, this embodiment can identify the large-scale transient event burst phenomena such as the plasma 10 ELM, and when a transient event breaks out, inject the control gas to the reaction boundary (inject gas into the scraping layer area to form an edge radiation belt or cause a boundary) according to the demand. Therefore, while protecting the first wall material, it does not affect the overall parameters of the plasma 10.

[0052] Embodiment 2

[0053] Combined withFigure 2 This embodiment provides a method for controlling transient high heat loads in a nuclear fusion device. Based on the nuclear fusion device transient high heat load control system described in Embodiment 1, it includes the following steps:

[0054] S10. Collect the heat flux density transported from the plasma to the inner target plate and the outer target plate in the divertor, as well as the instability amplitude of the heat flux.

[0055] Specifically, when the nuclear fusion device operates to generate plasma 10 during discharge, the target plate heat flux measurer 21 and the amplitude measurer 22 will monitor the heat flux and radiant energy transported from the plasma to the inner target plate and the outer target plate in the divertor, thereby respectively obtaining the evolution of the inner target plate heat flux density Q i (t), the outer target plate heat flux density Q o (t), and the instability amplitude spectral line signal D(t) over time (where t represents time). These two parts of signals from the inner target plate and the outer target plate are collected by the data collector 30 and then transmitted to the data storage 40.

[0056] S20. Calculate the outer target plate heat load and the inner target plate heat load per unit time period based on the target plate heat flux signal, and calculate the amplitude and frequency of the amplitude signal based on the amplitude signal.

[0057] Specifically, after the processor 50 extracts the target plate heat flux and the instability amplitude signal from the data storage 40, it respectively uses the heat flux calculation module 51 and the amplitude calculation module 52 to smooth Q i (t), Q o (t), and D(t), so as to obtain the Q i1 (t), Q o1 (t), and D1(t) arrays corresponding to a time step of 0.01 ms. Among them, the units of Q i1 (t) and Q o1 (t) are MW / m 2 , and the unit of D1(t) is a dimensionless normalized value.

[0058] Then, the heat flux calculation module 51 further calculates the magnitudes of the outer target plate and the inner target plate heat loads W i (t), W o (t) (MJ / m 2 ) per unit time period (5 ms). The calculation models for the outer target plate heat load and the inner target plate heat load are as follows:

[0059]

[0060]

[0061] The amplitude calculation module 52 calculates the amplitude s(t) and frequency f(t) of the instability amplitude signal, and the formula is as follows:

[0062] s(t) = D(t) / D(t - 500:t) min

[0063] f(t) = 10 * N(t - 10000:t).

[0064] In the above calculation model, D(t - 500:t) min represents the minimum value from 5 ms before the current moment to the current moment, and N(t - 10000:t) represents the number of instability peaks within 100 ms. The number of instability peaks is determined by the number of times the positive and negative values of dD(t) / dt are reversed.

[0065] S30. Compare the external target plate heat load, the internal target plate heat load, the amplitude, and the frequency with the corresponding preset values.

[0066] That is to say, input the calculation results W i (t) and W o (t) of the heat flux calculation module 51, and the calculation results s(t) and f(t) of the amplitude calculation module 52 into the judgment module 53 and compare them with the corresponding preset values. In this embodiment, the preset values of the external target plate heat load and the internal target plate heat load are both 0.5 MJ / m 2 , and the preset value of the frequency is 1.

[0067] S40. Control the gas injection execution component 70 to act according to the comparison result in step S30 to control the heat load of the fusion device.

[0068] Specifically, in step S40: when the external target plate heat load, the internal target plate heat load, the amplitude, and the frequency are all less than the preset values, then control the gas injection execution component 70 to standby;

[0069] When the external target plate heat load, the internal target plate heat load, the amplitude, and the frequency are all greater than the preset values, then control the gas injection execution component to inject control gas into the fusion device.

[0070] It should be noted that the judgment module 53 judges the types (sawteeth, tearing modes, edge localized modes with different amplitudes, etc.) and the severity of transient events in the plasma according to the amplitude and frequency of the instability amplitude signal, so as to comprehensively judge these four outputs to determine what kind of control signal needs to be provided to the controller 60. When making the comparison, the judgment module 53 first compares the magnitude of f(t), and then compares the magnitudes of W i (t) and W o (t):

[0071] If f(t) < 1, there is no violent instability, and there is no need to provide an air injection signal to the controller 60. Since the controller 60 does not receive the air injection signal, the air injection execution component 70 is controlled to standby at this time;

[0072] If f(t) > 1, W i (t) > 0.5 MJ / m 2 , then there is violent instability in the inner target plate, and an inner target plate air injection signal needs to be provided to the controller 60. At this time, after the controller 60 receives the inner target plate air injection signal, it controls the air injection execution component 70 to inject air at the inner target plate position;

[0073] If f(t) > 1, W o (t) > 0.5 MJ / m 2 , then there is violent instability in the outer target plate, and an outer target plate air injection signal needs to be provided to the controller 60. After the controller 60 receives the outer target plate air injection signal, it controls the air injection execution component 70 to inject air at the outer target plate position;

[0074] If f(t) > 1, W o (t) > 0.5 MJ / m 2 and W o (t) > 0.5 MJ / m 2 , then there is violent instability in both the inner and outer target plates. At this time, the judgment module 53 provides a signal to the controller 60 to inject air simultaneously at the inner and outer target plate positions.

[0075] Among them, when injecting control gas, the pulse width length and frequency of the injected gas are set according to a preset air injection plan. For large-scale single transient events, a large amount of air is injected at one time, and for small-scale multiple transient events, a small amount of air is injected multiple times. After the controller 60 receives the pulse width length and frequency signals of the target plate air injection, it controls the air injection execution component 70 to inject air at the target plate position as required, and alleviates the high transient heat load caused by different types of plasma transient events (sawtooth, tearing mode, edge localized mode, etc.).

[0076] In summary, in this embodiment, through the heat load of the outer target plate, the heat load of the inner target plate, and the amplitude and frequency of the heat flux instability amplitude of the divertor per unit time, the explosion phenomenon of large-scale transient events such as plasma ELM can be identified. Thus, according to the type of transient event inside the nuclear fusion reaction, the air injection execution group is controlled to inject control gas into the divertor, thereby alleviating or avoiding the damage caused by the transient event to the divertor target plate, and further extending the service life of the divertor target plate. And only when a transient event occurs, the control gas is injected into the reaction boundary according to the demand (injecting gas in the scrape-off layer region to form an edge radiation belt or cause a boundary). Therefore, while protecting the first wall material, it does not affect the overall parameters of the plasma.

[0077] The specific embodiments described above further elaborate on the object, technical solution and beneficial effects of the present invention. It should be understood that the above description is only for the specific embodiments of the present invention and is not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A transient high heat load control system for a nuclear fusion device, characterized in that, It includes a measurement component (20), a processor (50), a controller (60) and an air injection execution component (70); The measurement component (20) includes a target plate heat flux measurer (21) and an amplitude measurer (22). The target plate heat flux measurer (21) is used to measure the heat flux density transported from the plasma (10) received by the inner target plate and the outer target plate in the divertor, and the amplitude measurer (22) is used to measure the instability amplitude of the heat flux; The processor (50) is electrically connected to the measurement component (20), and the processor (50) includes a heat flux calculation module (51), an amplitude calculation module (52) and a judgment module (53); The heat flux calculation module (51) can calculate the outer target plate heat load and the inner target plate heat load per unit time according to the target plate heat flux signal; The amplitude calculation module (52) can calculate the amplitude and frequency of the amplitude signal according to the amplitude signal; The judgment module (53) can compare the outer target plate heat load, the inner target plate heat load, the amplitude and the frequency with corresponding preset values, and output an action signal according to the comparison result; The controller (60) is electrically connected to the processor (50), and can control the air injection execution component (70) to perform corresponding actions according to the action signal.

2. The transient high heat load control system of the nuclear fusion device according to claim 1, characterized in that It further includes a data collector (30) and a data memory (40); The data collector (30) is electrically connected to the measurement component (20), and the data collector (30) can collect the measurement signals measured by the measurement component (20); The data memory (40) is electrically connected to the data collector (30) and the processor (50). The data memory (40) can collect the data signals output by the data collector (30) and transmit the data signals to the processor (50).

3. A method for controlling transient high heat load of a nuclear fusion device, characterized in that, Based on the transient high heat load control system of the nuclear fusion device according to claim 2, it includes the following steps: S10. Collect the heat flux density transported from the plasma received by the inner target plate and the outer target plate in the divertor, and the instability amplitude of the heat flux; S20. Calculate the outer target plate heat load and the inner target plate heat load per unit time according to the target plate heat flux signal, and calculate the amplitude and frequency of the amplitude signal according to the amplitude signal; S30. Compare the outer target plate heat load, the inner target plate heat load, the amplitude and the frequency with corresponding preset values; S40. Control the action of the air injection execution component (70) according to the comparison result in step S30 to control the heat load of the fusion device.

4. The method for controlling transient high heat load of a nuclear fusion device according to claim 3, characterized in that, In step S30, the calculation model of the outer target plate heat load is: In the formula, t represents time.

5. The transient high heat load control method for a nuclear fusion device according to claim 3, characterized in that, In step S30, the calculation model of the inner target plate heat load is: In the formula, t represents time.

6. The transient high heat load control method for a nuclear fusion device according to claim 3, characterized in that In step S30, the calculation model of the amplitude is: Wherein, t represents time, represents the minimum value from 5 ms before the current moment to the current moment.

7. The transient high heat load control method for a nuclear fusion device according to claim 3, characterized in that, In step S30, the calculation model of the frequency is: wherein, t represents time, represents the number of instability peaks within 100 ms.

8. The method for controlling transient high heat load of a nuclear fusion device according to claim 3, characterized in that, In step S40: When the outer target plate heat load, the inner target plate heat load, the amplitude and the frequency are all less than the preset values, then control the air injection execution component (70) to standby; When the external target plate heat load, the internal target plate heat load, the amplitude, and the frequency are all greater than a preset value, the gas injection execution assembly (70) is controlled to inject control gas into the fusion device.

9. The method for controlling transient high heat load of a nuclear fusion device according to claim 8, wherein The preset values of the external target plate heat load and the internal target plate heat load are both 0.5 MJ / m 2 .

10. The transient high heat load control method for a nuclear fusion device according to claim 8, characterized in that The preset value of the frequency is 1.

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