Fusion power system, power generation control method, storage medium, and controller

Abstract

The application discloses a fusion power generation system, a power generation control method, a storage medium and a controller, and relates to the technical field of fusion energy. The fusion power generation system comprises a steam generator unit, a plurality of tokamak devices corresponding to the steam generator unit in one-to-one correspondence and a plurality of heat conversion units, the heat conversion unit is provided with a first channel and a second channel, the tokamak device and the first channel of the corresponding heat conversion unit form a blanket cooling loop, and the steam generator unit and a plurality of sequentially connected second channels form a power generation loop; wherein the plurality of tokamak devices are configured to operate in an alternating or complementary manner; the heat conversion unit is configured to receive heat from the corresponding blanket cooling loop, and convert the working medium in the power generation loop into steam by using the heat to drive the steam generator unit to generate power. The system can reduce heat loss, improve power generation efficiency and reduce the difficulty of plasma control by operating the plurality of tokamak devices in an alternating or complementary manner.

Description

Technical Field

[0001] This invention relates to the field of fusion energy technology, and in particular to a fusion power generation system, power generation control method, storage medium and controller. Background Technology

[0002] Nuclear fusion energy is widely regarded as a strategic direction for addressing global energy demand and environmental pollution challenges due to its significant advantages of being clean, safe, and resource-sustainable. Among various fusion reactions, the deuterium-tritium reaction, with its relatively low ignition requirements and high energy output, demonstrates greater engineering feasibility and has become the mainstream technology for international fusion reactor research and development and future commercialization.

[0003] Tokamak devices represent the most mature magnetic confinement fusion technology. Their basic principle involves using a magnetic field to confine high-temperature deuterium-tritium plasma, inducing a fusion reaction. The released energy is absorbed by the reactor blanket and converted into heat. This heat is transferred through the blanket cooling loop to the subsequent power generation loop, ultimately driving a steam turbine to generate electricity. However, due to limitations in plasma physical stability, the thermal management capabilities of the magnet system, and the response characteristics of auxiliary subsystems, current and recent tokamak devices generally operate in pulsed mode. In this mode, a single plasma discharge typically lasts from tens to hundreds of seconds, followed by a shutdown preparation period of hundreds of seconds to several hours to complete operations such as vacuuming, wall treatment, and magnet resetting. This intermittent operation results in a periodic pulsed characteristic in the thermal output of the blanket loop.

[0004] In contrast, thermal power generation systems centered around steam turbines require continuous and stable heat input to achieve efficient and safe operation. To resolve the contradiction between the pulsed heat output of the fusion reactor and the continuous heat demand of the power generation system, current mainstream fusion reactor designs (such as EU-DEMO and CFETR) typically incorporate high-temperature energy storage modules as a buffer, such as molten salt thermal storage systems or liquid metal buffer loops. During the plasma discharge phase, the energy storage module stores some of the thermal energy; during the shutdown phase, the energy storage module releases the stored thermal energy to maintain the continuous operation of the power generation circuit. While this approach smooths out power output to some extent, it also introduces several inherent drawbacks: First, the energy storage and heat release processes are accompanied by significant irreversible heat losses, reducing the overall power generation efficiency of the entire energy conversion chain; second, the periodic and drastic temperature fluctuations of the heat storage medium accelerate thermal fatigue damage to critical equipment (such as heat exchangers and pipelines), affecting system lifespan and reliability; third, the energy storage system itself is complex in structure, large in size, and expensive, increasing the difficulty and cost of engineering construction; furthermore, to improve the average output power of the device, a single tokamak device needs to pursue a higher plasma operating time percentage, which places more stringent requirements on plasma control technology. Therefore, developing a new system architecture that can achieve continuous and stable fusion power generation without relying on large-scale energy storage modules has become a key issue that urgently needs to be addressed in the development of fusion energy technology. Summary of the Invention

[0005] The purpose of this invention is to provide a fusion power generation system, a power generation control method, a storage medium, and a controller to reduce heat loss, improve power generation efficiency, and reduce the difficulty of plasma control.

[0006] In a first aspect, embodiments of the present invention propose a fusion power generation system, the system comprising: a steam generator set, a plurality of tokamak devices corresponding to each other, and a plurality of thermoelectric conversion units. Each thermoelectric conversion unit has a first channel and a second channel. The tokamak devices and the first channel of the corresponding thermoelectric conversion unit form a cladding cooling circuit. The steam generator set and the plurality of sequentially connected second channels form a power generation circuit. The plurality of tokamak devices are configured to operate in an alternating or complementary manner. The thermoelectric conversion unit is configured to receive heat from the corresponding cladding cooling circuit and use the heat to convert the working fluid in the power generation circuit into steam to drive the steam generator set to generate electricity.

[0007] In some embodiments, the system further includes a central control unit configured to control the plurality of tokamak devices to operate in an alternating or complementary manner.

[0008] In some embodiments, the plurality of tokamak devices include a first tokamak device and a second tokamak device; the central control unit is configured to control the first tokamak device and the second tokamak device to operate alternately in the following manner: at the initial moment of each alternation cycle, the first tokamak device is controlled to start and maintain plasma discharge for a first time; at time ton of each alternation cycle, the second tokamak device is controlled to start and maintain plasma discharge for a second time, wherein ton is the first time; wherein each alternation cycle is the sum of the first time and the second time.

[0009] In some embodiments, the first time is equal to the second time.

[0010] In some embodiments, a regulating valve is provided for each of the two first channels; the central control unit is further configured to: acquire the outlet temperature of the two second channels during the switching process of the two tokamak devices; and control the regulating valves of the two first channels according to the outlet temperature to regulate the coolant flow rate of the two cladding cooling circuits.

[0011] In some embodiments, the central control unit is further configured to: monitor the operating parameters of each of the tokamak devices; and, when it is determined based on the operating parameters that a faulty tokamak device exists, disconnect the faulty tokamak device from the fusion power generation system and adjust the operating status of the remaining tokamak devices.

[0012] In some embodiments, the steam generator set includes a steam turbine, a generator, and a condenser connected in sequence.

[0013] In a second aspect, embodiments of the present invention provide a power generation control method for the fusion power generation system described in the first aspect embodiment, the method comprising: controlling multiple tokamak devices to operate in an alternating or complementary manner.

[0014] Thirdly, embodiments of the present invention provide a computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, it implements the power generation control method described in the second aspect.

[0015] Fourthly, embodiments of the present invention provide a controller, including a memory, a processor, and a computer program stored in the memory, wherein when the computer program is executed by the processor, it implements the power generation control method described in the second aspect.

[0016] The fusion power generation system, power generation control method, storage medium, and controller of this invention share a single power generation circuit through multiple blanket cooling circuits, and multiple tokamak devices in the multiple blanket cooling circuits operate in an alternating or complementary manner, enabling continuous power generation from a steam generator set. The entire process requires no energy storage module, reducing heat loss, improving power generation efficiency, and also simplifying plasma control. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a fusion power generation system according to an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of a fusion power generation system according to another embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the structure of an example fusion power generation system of the present invention;

[0020] Figure 4 This is a schematic diagram of the operation sequence of a dual tokamak device according to an example of the present invention;

[0021] Figure 5 This is a structural block diagram of a controller according to an embodiment of the present invention. Detailed Implementation

[0022] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0023] The following description, with reference to the accompanying drawings, outlines an embodiment of the fusion power generation system, power generation control method, storage medium, and controller of the present invention.

[0024] Figure 1 This is a schematic diagram of a fusion power generation system according to an embodiment of the present invention.

[0025] like Figure 1 As shown, the fusion power generation system 100 includes: a steam generator set 10, a plurality of tokamak devices 20 corresponding to each other, and a plurality of thermoelectric conversion units 30. Each thermoelectric conversion unit 30 has a first channel and a second channel. The tokamak device 20 and the first channel of the corresponding thermoelectric conversion unit 30 form a cladding cooling circuit, and the steam generator set 10 and the plurality of second channels connected in sequence form a power generation circuit.

[0026] In this embodiment, multiple tokamak devices 20 are configured to operate in an alternating or complementary manner; the thermoelectric conversion unit 30 is configured to receive heat from the corresponding cladding cooling circuit and use the heat to convert the working fluid in the power generation circuit into steam to drive the steam generator set 10 to generate electricity. The thermoelectric conversion unit 30 can be an integrated steam generator and heat exchanger, i.e., the steam generator and heat exchanger are integrated into one unit.

[0027] The fusion power generation system 100, through the alternating or complementary operation of multiple tokamak devices 20, enables the steam generator set 10 to continuously generate electricity. The entire process requires no energy storage module, which reduces heat loss, improves power generation efficiency, and also simplifies plasma control.

[0028] In some embodiments of the present invention, a pre-set discharge sequence is provided to each tokamak device 20, and each tokamak device 20 can operate directly according to its own discharge sequence, so that multiple tokamak devices 20 can operate in an alternating or complementary manner.

[0029] In other embodiments of the invention, such as Figure 2 As shown, the fusion power generation system 100 also includes a central control unit 40, configured to control multiple tokamak devices 20 to operate in an alternating or complementary manner.

[0030] In this embodiment, the central control unit 40 can generate the discharge sequence of each tokamak device 20 according to a preset cycle, and then control the multiple tokamak devices 20 to operate in an alternating or complementary manner according to the discharge sequence.

[0031] Taking the example of two tokamak devices 20, such as Figure 3 As shown, the plurality of tokamak devices 20 include a first tokamak device 21 and a second tokamak device 22; the central control unit 40 is configured to control the first tokamak device 21 and the second tokamak device 22 to operate alternately in the following manner:

[0032] At the beginning of each alternation cycle, the first tokamak device 21 is activated and plasma discharge is maintained for the first time.

[0033] At time ton in each alternating cycle, the second tokamak device 22 is activated and plasma discharge is maintained for a second time, where ton is the first time.

[0034] Each alternation cycle is the sum of the first time and the second time.

[0035] For example, the first time is equal to the second time.

[0036] Specifically, see Figure 3 The multiple heat conversion units 30 include a first heat conversion unit 31 and a second heat conversion unit 32, and the two cladding cooling circuits can be referred to as the first cladding cooling circuit and the second cladding cooling circuit, respectively. The first tokamak device 21 and the second tokamak device 22 operate alternately in the following manner:

[0037] 1) First stage (discharge period of the first tokamak device 21):

[0038] like Figure 4 As shown, at time nTcycle, the central control unit 40 issues a command (which may include start-stop time, release power, etc.) to control the first tokamak device 21 to start and maintain plasma discharge for a duration of the first time ton.

[0039] The heat generated by the fusion reaction in the first tokamak device 21 is absorbed by the first cladding cooling circuit and carried away by the cooling medium in the first cladding cooling circuit. The high-temperature cooling medium in the first cladding cooling circuit flows through the first thermodynamic conversion unit 31, transferring heat to the working fluid (such as water) in the power generation circuit, causing it to heat up and vaporize. The resulting high-temperature and high-pressure steam drives the steam generator set 10 to continuously generate electricity.

[0040] Meanwhile, the second tokamak device 22 is in a shutdown preparation state. The central control unit 40 synchronously starts the preparation work of the second tokamak device 22, including: evacuating the residual gas in the vacuum chamber, injecting new deuterium-tritium fuel, pre-charging and cooling the superconducting magnet, etc.

[0041] 2) Switching phase:

[0042] See Figure 4 At time nTcycle+ton, the central control unit 40 issues a command to extinguish the plasma in the first tokamak device 21, ending the discharge. Simultaneously or at a preset time (e.g., several seconds in advance), the central control unit 40 issues a command (which may include start / stop time, release power, etc.) to start the discharge in the second tokamak device 22.

[0043] To ensure seamless heat flow, the central control unit 40 precisely controls the start-up and shutdown times of the first tokamak device 21 and the second tokamak device 22, thereby ensuring the stability of the heat flow transferred to the power generation circuit through the first thermoelectric conversion unit 31 and the second thermoelectric conversion unit 32. During the switching between the first tokamak device 21 and the second tokamak device 22, the heat flow in the first cladding cooling circuit gradually decreases, while the heat flow in the second cladding cooling circuit starts simultaneously. Utilizing the thermal inertia and working fluid reserves of the circuit itself, the steam quality of the power generation circuit remains stable without significant fluctuations.

[0044] 3) Second stage (discharge period of the second tokamak device 22):

[0045] The second tokamak device 22 enters the discharge state, and its operating mode is exactly the same as that of the first tokamak device 21 in the first stage.

[0046] Heat is transferred to the power generation circuit through the second cladding cooling circuit and the second thermoelectric conversion unit 32, maintaining the continuous operation of the steam generator unit 10. At this time, the first tokamak unit 21 enters a comprehensive shutdown maintenance and preparation phase in preparation for the next cycle.

[0047] It should be noted that after the plasma of the first tokamak device 21 is extinguished and the discharge ends, the first cladding cooling circuit does not immediately stop working. Correspondingly, the second cladding cooling circuit of the second tokamak device 22 does not immediately start working either. In other words, after the first tokamak device 21 stops discharging, the thermal inertia of the first cladding cooling circuit maintains the steam quality of the power generation circuit for a certain period, thus ensuring that the energy released by the second tokamak device 22 reaches the power generation circuit, demonstrating that the energy obtained by the power generation circuit is generally stable. Afterwards, during the maintenance phase, the key point is that the thermal inertia of the first cladding cooling circuit has been completely discharged, and the heat for the entire power generation circuit is provided by the second tokamak device 22.

[0048] 4) Repeated cycle:

[0049] The first tokamak device 21 and the second tokamak device 22 operate alternately strictly according to this mode, and the overall output power of the system changes as follows: Figure 4 As shown. For each complete working cycle Tcycle (i.e., alternating cycle), the plasma running time is ton, and the shutdown preparation time is toff, where ton = toff. Therefore, the operating factor for each tokamak device is 0.5, and the system's overall output power Q(t) = Qmax.

[0050] Optionally, the operating factor can also be other values, such as 0.4 for the first tokamak device 21 and 0.6 for the second tokamak device 22, etc., to ensure that the tokamak device to be started is ready when switching.

[0051] For example, see Figure 3 The steam generator set 10 includes a steam turbine 11, a generator 12 and a condenser 13 connected in sequence.

[0052] Specifically, the steam turbine 11 is used to convert the energy of steam into rotational mechanical energy. The working process includes: high-temperature and high-pressure steam flowing out of the second channel is guided to the steam turbine 11 and impacts a series of blades on the shaft of the steam turbine 11 at high speed. As the steam flows through the blade passage, the pressure decreases and the volume expands, transferring most of its energy to the blades, driving the impeller and rotor shaft to rotate at high speed.

[0053] Generator 12 is used to convert mechanical energy into electrical energy. The working process includes: the rotor shaft of turbine 11 is directly connected to the rotor of generator 12 (coaxial). After the generator rotor (excitation winding) is energized, it generates a strong rotating magnetic field. The stator (armature winding) cuts this magnetic field line, thereby inducing a strong alternating current.

[0054] Condenser 13 is used to re-condense the steam (referred to as "exhaust steam") that has completed its work into water, so that it can be pumped back into the second channel of the heat conversion unit 30, forming a closed loop. The working process includes: the exhaust steam discharged from the turbine 11, with its pressure and temperature already very low, enters condenser 13. Condenser 13 contains a large number of pipes, in which cooling water from an external cooling source (such as a cooling tower, river, or seawater) flows. When the exhaust steam encounters the cold pipe walls, it releases its remaining "waste heat" and condenses into liquid water.

[0055] In some embodiments of the present invention, regulating valves are provided for each of the two first channels; the central control unit 40 is also configured to: acquire the outlet temperature of the two second channels during the switching process of the two tokamak devices 20; and control the regulating valves of the two first channels according to the outlet temperature to regulate the coolant flow rate of the two cladding cooling circuits.

[0056] For example, the regulating valve may be a valve installed at the inlet of the corresponding first channel, that is, a valve that enters the corresponding thermodynamic conversion unit 30 from the cladding cooling circuit.

[0057] Specifically, the central control unit 40 can generate control commands based on the outlet temperature of at least one second channel; according to the control commands, it can adjust the opening of the regulating valve on at least one first channel to change the flow rate of coolant flowing through at least one first channel, thereby keeping the total thermal power input of the fusion power generation system 100 stable and achieving smooth heat flow switching.

[0058] To keep the total thermal power input of the fusion power generation system 100 stable, the outlet temperature of at least one second channel can be maintained within a preset target temperature range, such as within ±5% of the outlet temperature value of the second channel corresponding to the fusion power generation system 100 when it is running at rated power.

[0059] In one implementation, at the start of the switching process, the first tokamak device 21 begins to reduce power, and the outlet temperature of its corresponding second channel shows a downward trend. At this time, the outlet temperature T_a of the second channel corresponding to the second tokamak device 22 can be continuously read. The central control unit 40 aims to maintain T_a at the rated temperature T_s, specifically by calculating the error e(t) = T_s - T_a, and obtaining a regulating valve opening command based on e(t) (e.g., PID control). For example, if T_a is too low, the opening of the regulating valve of the first channel corresponding to the second tokamak device 22 is increased, increasing the coolant flow rate, thereby improving the heat generation and output of the second tokamak device 22. The regulating valve opening command is sent to the regulating valve to change the flow rate. T_a is pulled back to near T_s, thus ensuring the stability of the total heat input to the power generation circuit, ultimately stabilizing the power generation.

[0060] In some embodiments of the present invention, the central control unit 40 is further configured to: monitor the operating parameters of each tokamak device 20; and when it is determined from the operating parameters that there is a faulty tokamak device, disconnect the faulty tokamak device from the fusion power generation system 100 and adjust the operating status of the remaining tokamak devices.

[0061] The operating parameters include, but are not limited to, plasma current, position or density, surface temperature of the first wall or divertor, flow rate or pressure of the cladding cooling circuit, and current of the circumferential or poloidal coils.

[0062] Specifically, when the central control unit 40 determines that a faulty tokamak device exists based on operating parameters, it compares the operating parameters with corresponding preset safety thresholds. If any operating parameter exceeds its corresponding preset safety threshold, the corresponding tokamak device is determined to be faulty and recorded as a faulty tokamak device. Disconnection can include physical disconnection, such as sending a shutdown command to systems related to the faulty tokamak device (e.g., power supply system, fuel injection system); it can also include thermal-hydraulic disconnection, such as closing the regulating valve connecting the cladding cooling circuit of the faulty tokamak device, isolating it from the thermal cycle.

[0063] When adjusting the operating status of the remaining tokamak units, the central control unit 40 can calculate the power loss P_l due to the disconnection of the faulty tokamak unit. Subsequently, it sends instructions to the remaining healthy tokamak units to increase their power according to a predetermined strategy (such as average distribution or capacity distribution), with a total increase of approximately P_l. Simultaneously, it monitors the total thermal power or power generation of the fusion power generation system 100 and performs fine-tuning through controllers such as PID controllers to ensure its stability at the target value.

[0064] The present invention also proposes a power generation control method for the fusion power generation system described in the above embodiments.

[0065] In this embodiment, the power generation control method includes controlling multiple tokamak devices to operate in an alternating or complementary manner.

[0066] In some embodiments of the present invention, the plurality of tokamak devices include a first tokamak device and a second tokamak device; the first tokamak device and the second tokamak device can be controlled to operate alternately in the following manner:

[0067] At the beginning of each alternation cycle, the first tokamak device is started and plasma discharge is maintained for the first time.

[0068] At time ton in each alternating cycle, the second tokamak device is activated and plasma discharge is maintained for a second time, where ton is the first time.

[0069] Each alternation cycle is the sum of the first time and the second time.

[0070] For example, the first time is equal to the second time.

[0071] In some embodiments of the present invention, regulating valves are provided for each of the two first channels; the power generation control method further includes: during the switching process of the two tokamak devices, obtaining the outlet temperature of the two second channels; and controlling the regulating valves of the two first channels according to the outlet temperature to regulate the coolant flow rate of the two cladding cooling circuits.

[0072] In some embodiments of the present invention, the power generation control method further includes: monitoring the operating parameters of each tokamak device; when it is determined from the operating parameters that there is a faulty tokamak device, disconnecting the faulty tokamak device from the fusion power generation system and adjusting the operating status of the remaining tokamak devices.

[0073] It should be noted that for other specific implementations of the power generation control method of the present invention, please refer to the specific implementations of the fusion power generation system of the above embodiments.

[0074] The present invention also proposes a computer-readable storage medium.

[0075] In this embodiment, a computer program is stored on a computer-readable storage medium. When the computer program is executed by a processor, it implements the power generation control method of the above embodiment.

[0076] Figure 5 This is a structural block diagram of a controller according to an embodiment of the present invention.

[0077] like Figure 5As shown, the controller 500 (which may be the central control unit 40 described above) includes a processor 501 and a memory 503. The processor 501 and the memory 503 are connected, for example, via a bus 502. Optionally, the controller 500 may also include a transceiver 504. It should be noted that in practical applications, the transceiver 504 is not limited to one type, and the structure of the controller 500 does not constitute a limitation on the embodiments of the present invention.

[0078] Processor 501 may be a CPU (Central Processing Unit), a general-purpose processor, a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It can implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of this invention. Processor 501 may also be a combination that implements computational functions, such as including one or more microprocessor combinations, a combination of a DSP and a microprocessor, etc.

[0079] Bus 502 may include a pathway for transmitting information between the aforementioned components. Bus 502 may be a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus, etc. Bus 502 can be divided into address bus, data bus, control bus, etc. For ease of representation, Figure 5 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0080] The memory 503 stores a computer program corresponding to the power generation control method of the above embodiments of the present invention. This computer program is executed by the processor 501. The processor 501 executes the computer program stored in the memory 503 to implement the content shown in the foregoing method embodiments. Figure 5 The controller 500 shown is merely an example and should not be construed as limiting the functionality and scope of use of embodiments of the present invention.

[0081] In summary, the fusion power generation system, power generation control method, storage medium, and controller of this invention, through multiple tokamak devices sharing a single power generation circuit and discharging in an alternating or complementary manner, can achieve seamless heat source relay. Specific advantages are as follows:

[0082] 1) Omitting the energy storage module avoids secondary heat conversion losses and improves the overall power generation efficiency of the system;

[0083] 2) The total heat output is constant, meeting the requirements for continuous operation of the steam turbine and eliminating thermal stress fatigue;

[0084] 3) A single-reactor operation factor of less than 1, such as 0.5, can provide sufficient downtime preparation time, which is beneficial for magnet cooling, vacuum establishment, wall maintenance and system overhaul. At the same time, it can reduce the single plasma discharge time and reduce the technical difficulties of plasma control.

[0085] It should be noted that the logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be specifically implemented in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Alternatively, the computer-readable medium may be paper or other suitable media on which the program can be printed, since the program can be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.

[0086] It should be understood that various parts of the present invention can be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0087] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0088] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0089] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0090] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0091] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0092] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A fusion power generation system, characterized in that, The system includes: a steam generator set, multiple fully functional tokamak devices corresponding to each other, and multiple thermoelectric conversion units. Each thermoelectric conversion unit has a first channel and a second channel. The tokamak device and the first channel of the corresponding thermoelectric conversion unit form a cladding cooling circuit. The steam generator set and multiple sequentially connected second channels form a power generation circuit. The plurality of tokamak devices are configured to operate in an alternating or complementary manner; the thermoelectric conversion unit is configured to receive heat from the corresponding cladding cooling circuit and use the heat to convert the working fluid in the power generation circuit into steam to drive the steam generator set to generate electricity. In this process, a pre-set discharge sequence is provided to the multiple tokamak devices, and the multiple tokamak devices operate directly according to their respective discharge sequences, so that the multiple tokamak devices can operate in an alternating or complementary manner.

2. The fusion power generation system according to claim 1, characterized in that, The system also includes: The central control unit is configured to control the plurality of tokamak devices to operate in an alternating or complementary manner.

3. The fusion power generation system according to claim 2, characterized in that, The plurality of tokamak devices includes a first tokamak device and a second tokamak device; the central control unit is configured to control the first tokamak device and the second tokamak device to operate alternately in the following manner: At the beginning of each alternation cycle, the first tokamak device is controlled to start and maintain plasma discharge for the first time. At time ton in each alternating cycle, the second tokamak device is activated and plasma discharge is maintained for a second time, where ton is the first time. Each alternation cycle is the sum of the first time and the second time.

4. The fusion power generation system according to claim 3, characterized in that, The first time is equal to the second time.

5. The fusion power generation system according to claim 3, characterized in that, A regulating valve is provided for each of the two first channels; the central control unit is further configured to: During the switching process between the two tokamak devices, the outlet temperatures of the two second channels are obtained; The regulating valves of the two first channels are controlled according to the outlet temperature to regulate the coolant flow rate of the two cladding cooling circuits.

6. The fusion power generation system according to claim 2, characterized in that, The central control unit is also configured to: Monitor the operating parameters of each of the tokamak devices; When a faulty tokamak device is determined based on the operating parameters, the faulty tokamak device is disconnected from the fusion power generation system, and the operating status of the remaining tokamak devices is adjusted.

7. The fusion power generation system according to claim 1, characterized in that, The steam generator set includes a steam turbine, a generator, and a condenser connected in sequence.

8. A power generation control method, characterized in that, For a fusion power generation system as described in any one of claims 1-7, the method comprises: Control multiple tokamak devices to operate in an alternating or complementary manner.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the power generation control method as described in claim 8.

10. A controller, characterized in that, It includes a memory, a processor, and a computer program stored in the memory, which, when executed by the processor, implements the power generation control method as described in claim 8.

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