Control method and device of fusion reactor auxiliary equipment water cooling system, and storage medium

Abstract

The application belongs to the technical field of fusion device auxiliary system control, and discloses a control method and device for a water cooling system of a fusion reactor auxiliary device and a storage medium, wherein the device water cooling system comprises a process cooling loop and a heat dissipation loop, the method comprises the following steps: obtaining a discharge plan of the fusion reactor; predicting the heat load and operation time of the device according to the discharge plan; determining the first target water pump of the process cooling loop, the first preset water pump of the heat dissipation loop and the preset cooling tower according to the heat load, and controlling the water pump and the cooling tower to be opened and closed according to the operation time; when the water pump and the cooling tower are both opened, obtaining the real-time heat load of the device and the real-time ambient wet-bulb temperature; after the system is stabilized, determining the first operation frequency of the first target water pump according to the most unfavorable terminal of the process cooling loop, determining the second operation frequency of the second target water pump and the third operation frequency of the target cooling tower in the heat dissipation loop according to the real-time heat load and the real-time ambient wet-bulb temperature; and then the frequencies are controlled respectively.

Description

Technical Field

[0001] This invention relates to the field of auxiliary system control technology for nuclear fusion devices, and in particular to a control method, device, and storage medium for a water cooling system of auxiliary equipment for fusion reactors. Background Technology

[0002] Nuclear fusion devices and their auxiliary systems generate a large amount of waste heat during operation, which is typically removed using water cooling systems. Currently, water cooling systems for fusion reactor auxiliary equipment generally employ a separate architecture for process cooling and heat dissipation loops: the process-side closed loop directly absorbs the equipment's heat load and transfers it to the heat dissipation side via plate heat exchangers; the heat dissipation side dissipates the waste heat to the environment through cooling towers and other equipment. In terms of control strategies, related technologies largely rely on real-time feedback from local sensors to achieve basic interlocking and closed-loop regulation. For example, the pump frequency is dynamically adjusted based on the process-side outlet water temperature, or the water supply capacity is adjusted based on the pressure at the most unfavorable point.

[0003] However, as fusion devices evolve towards high-power, long-pulse operation modes, the heat load on auxiliary equipment increases significantly, and the energy consumption of the water-cooling system becomes increasingly prominent. The relevant control strategies suffer from the following problems: First, they fail to consider the pulse operation characteristics of the fusion reactor, making it impossible to predict changes in heat load. Furthermore, the long transmission distance of the cooling pipe network easily leads to delayed adjustment response, causing localized overheating of the equipment. Second, the independent control of the cooling water pump and cooling tower fan in the heat dissipation circuit fails to consider the coupling relationship of their energy consumption, making it difficult to achieve optimal overall system energy efficiency. This results in excessively high operating energy consumption, restricting the net power output efficiency of the fusion power plant. Summary of the Invention

[0004] This invention aims to at least partially solve one of the technical problems in related technologies. Therefore, the first objective of this invention is to propose a control method for a water-cooling system of fusion reactor auxiliary equipment, which can effectively solve the problems of response lag and local overheating caused by pulsed heat load changes and pipeline transmission delays, while significantly reducing the operating energy consumption of the water-cooling system and improving the operating economy and reliability of the fusion reactor auxiliary equipment water-cooling system.

[0005] A second objective of this invention is to provide a computer-readable storage medium.

[0006] The third objective of this invention is to provide a control device for a water cooling system of a fusion reactor auxiliary equipment.

[0007] The fourth objective of this invention is to provide a water cooling system.

[0008] To achieve the above objectives, a first aspect of the present invention provides a control method for a water-cooling system of a fusion reactor auxiliary equipment. The water-cooling system includes a process cooling loop and a heat dissipation loop. The method includes: acquiring a discharge plan for the fusion reactor; predicting the heat load and operating time of the fusion reactor auxiliary equipment based on the discharge plan; determining a first target water pump in the process cooling loop, a first preset water pump in the heat dissipation loop, and a preset cooling tower based on the heat load; and controlling the first target water pump, the first preset water pump, and the preset cooling tower to turn on and off based on the operating time; and when the first target water pump, the first preset water pump, and the preset cooling tower are all turned on, acquiring the control method for the fusion reactor auxiliary equipment. The system monitors the real-time heat load and real-time ambient wet-bulb temperature of the auxiliary equipment; when the cooling water flow rate and cooling water pressure in the water cooling system are both within a preset error range, it determines the first operating frequency of the first target water pump based on the most unfavorable end of the process cooling loop to ensure safe heat dissipation of the fusion reactor auxiliary equipment; it also determines the second operating frequency of the second target water pump and the third operating frequency of the target cooling tower in the heat dissipation loop based on the real-time heat load and the real-time ambient wet-bulb temperature to reduce the energy consumption of the heat dissipation loop; it controls the first target water pump based on the first operating frequency, controls the second target water pump based on the second operating frequency, and controls the target cooling tower based on the third operating frequency.

[0009] According to the control method of the water cooling system for fusion reactor auxiliary equipment of the present invention, the discharge plan of the fusion reactor is first obtained. Based on the discharge plan, the heat load and running time of the auxiliary equipment are predicted. Then, according to the heat load, the first target water pump in the process cooling loop and the first preset water pump and preset cooling tower in the heat dissipation loop are pre-selected. The equipment is started and stopped according to the running time, which effectively avoids the response lag and equipment overheating risk caused by the transmission delay of long-distance pipeline network. The real-time heat load and real-time ambient wet-bulb temperature of the auxiliary equipment are obtained. After the system is running stably, the first operating frequency of the first target water pump on the process side is determined based on the most unfavorable end of the process cooling loop to ensure the cooling safety of the most unfavorable point or high-load equipment. At the same time, according to the real-time heat load and real-time ambient wet-bulb temperature, the second operating frequency of the second target water pump and the third operating frequency of the target cooling tower are determined by the coupled energy consumption optimization model of the cooling water pump and cooling tower in the heat dissipation loop to minimize the total power consumption on the heat dissipation side. This can effectively solve the problems of response lag and local overheating caused by pulse heat load changes and pipeline transmission delays, and significantly reduce the operating energy consumption of the water cooling system, thereby improving the operating economy and reliability of the water cooling system for fusion reactor auxiliary equipment.

[0010] In addition, the control method for the water cooling system of the fusion reactor auxiliary equipment according to the above embodiments of the present invention may further include the following additional technical features:

[0011] According to one embodiment of the present invention, the first target water pump includes multiple pumps, the process cooling circuit includes multiple branches, and each branch includes multiple fusion reactor auxiliary devices and a first target water pump. Determining a first operating frequency of the first target water pump based on the most unfavorable end of the process cooling circuit to ensure safe heat dissipation of the fusion reactor auxiliary devices includes: identifying the target fusion reactor auxiliary device at the most unfavorable end of each branch of the process cooling circuit; obtaining the actual cooling water pressure of the cooling circuit corresponding to the target fusion reactor auxiliary device; and adjusting the first operating frequency of the first target water pump in the corresponding branch based on the actual cooling water pressure to ensure safe heat dissipation of the multiple fusion reactor auxiliary devices in the branch.

[0012] According to one embodiment of the present invention, determining a second operating frequency of a second target water pump and a third operating frequency of a target cooling tower in the heat dissipation loop based on the real-time heat load and the real-time ambient wet-bulb temperature to reduce the energy consumption of the heat dissipation loop includes: determining the number of multiple sets of cooling water pumps and cooling towers operating in the heat dissipation loop that meet the preset requirements of the water cooling system based on the real-time heat load and the real-time ambient wet-bulb temperature; obtaining a calculation model between the total operating power of the heat dissipation loop and a approach temperature, wherein the approach temperature is the temperature difference between the cooling water outlet temperature of the heat dissipation loop and the real-time ambient wet-bulb temperature; and calculating the minimum energy consumption of each set of cooling water pumps and cooling towers operating based on the calculation model. The energy consumption corresponds to the approach temperature setpoint; the target number of cooling water pumps and cooling towers to be turned on and the corresponding target approach temperature setpoint are determined based on the minimum energy consumption of the number of cooling water pumps and cooling towers to be turned on in each group; the cooling water inlet temperature of the heat dissipation circuit is obtained; the total cooling water flow rate of the heat dissipation circuit is determined based on the cooling water inlet temperature, the target approach temperature setpoint, the real-time heat load and the real-time ambient wet-bulb temperature, and the second operating frequency of the second target water pump is determined based on the total cooling water flow rate; the air volume of the target cooling tower is determined based on the total cooling water flow rate, the target approach temperature setpoint and the real-time ambient wet-bulb temperature, and the third operating frequency of the target cooling tower is determined based on the air volume.

[0013] According to one embodiment of the present invention, the preset requirements include the flow rate requirements and / or redundancy requirements of the water cooling system.

[0014] According to one embodiment of the present invention, the total flow rate of the cooling water is calculated using the following formula:

[0015]

[0016] in, This indicates the total flow rate of the cooling water. This indicates the real-time heat load. This indicates the specific heat capacity of cooling water. This indicates the inlet temperature of the cooling water. This indicates the real-time ambient wet-bulb temperature. This indicates that the target temperature is approaching the set value.

[0017] According to one embodiment of the present invention, the air volume of the target cooling tower is calculated using the following formula:

[0018]

[0019] in, This indicates that the target is approaching the set temperature value. This represents the correction value for the real-time ambient wet-bulb temperature. This indicates the total flow rate of the cooling water. This indicates the air volume of the target cooling tower. All parameters are preset.

[0020] According to an embodiment of the present invention, the method further includes: obtaining the change in the real-time heat load and / or the real-time ambient wet-bulb temperature; and updating the first operating frequency, the second operating frequency and the third operating frequency when the change is not within a preset fluctuation range.

[0021] According to one embodiment of the present invention, the process cooling loop includes a plate heat exchanger, which is connected to the fusion reactor auxiliary equipment and the heat dissipation loop respectively. The method further includes: obtaining the flow rate of cooling water in the process cooling loop and the pipe length between the fusion reactor auxiliary equipment at the most unfavorable end and the heat exchanger; determining an operating time correction value based on the flow rate and the pipe length; and correcting the operating time of the first target water pump, the first preset water pump, and the preset cooling tower based on the operating time correction value.

[0022] To achieve the above objectives, a second aspect of the present invention provides a computer-readable storage medium storing a control program for a water-cooling system, wherein the control program for the water-cooling system, when executed by a processor, implements the control method for the water-cooling system of the fusion reactor auxiliary equipment described in the aforementioned embodiments of the present invention.

[0023] According to the computer-readable storage medium of the present invention, the control program of the water cooling system is executed by the processor, which can effectively solve the problems of response lag and local overheating caused by pulse heat load changes and pipeline transmission delay, and significantly reduce the operating energy consumption of the water cooling system, thereby improving the operating economy and reliability of the water cooling system for fusion reactor auxiliary equipment.

[0024] To achieve the above objectives, a third aspect of the present invention provides a control device for a water cooling system of a fusion reactor auxiliary equipment. The water cooling system includes a process cooling loop and a heat dissipation loop. The device includes: a first acquisition module for acquiring the discharge plan of the fusion reactor; a prediction module for predicting the heat load and operating time of the fusion reactor auxiliary equipment based on the discharge plan; a first determination module for determining a first target water pump in the process cooling loop, a first preset water pump in the heat dissipation loop, and a preset cooling tower based on the heat load, and controlling the first target water pump, the first preset water pump, and the preset cooling tower to open and close based on the operating time; and a second acquisition module for controlling the opening and closing of the first target water pump, the first preset water pump, and the preset cooling tower when all three are open. The system includes: a first determination module, used to obtain the real-time heat load and real-time ambient wet-bulb temperature of the fusion reactor auxiliary equipment; a second determination module, used to determine the first operating frequency of the first target water pump based on the most unfavorable end of the process cooling loop to ensure safe heat dissipation of the fusion reactor auxiliary equipment when the cooling water flow rate and cooling water pressure in the water cooling system are both within a preset error range; and a second operating frequency of the second target water pump and the third operating frequency of the target cooling tower in the heat dissipation loop based on the real-time heat load and the real-time ambient wet-bulb temperature to reduce the energy consumption of the heat dissipation loop; and a control module, used to control the first target water pump based on the first operating frequency, control the second target water pump based on the second operating frequency, and control the target cooling tower based on the third operating frequency.

[0025] The control device for the water cooling system of the fusion reactor auxiliary equipment according to the embodiments of the present invention can effectively solve the problems of response lag and local overheating caused by pulse heat load changes and pipeline transmission delay, and significantly reduce the operating energy consumption of the water cooling system, thereby improving the operating economy and reliability of the water cooling system for the fusion reactor auxiliary equipment.

[0026] To achieve the above objectives, a fourth aspect of the present invention provides a water cooling system, which includes a control device for the water cooling system of the fusion reactor auxiliary equipment described in the foregoing embodiments of the present invention.

[0027] According to the water cooling system of the present invention, by adopting the control device of the water cooling system of the fusion reactor auxiliary equipment of the above embodiments of the present invention, the response lag and local overheating caused by pulse heat load changes and pipeline transmission delay can be effectively solved, and the operating energy consumption of the water cooling system can be significantly reduced, thereby improving the operating economy and reliability of the water cooling system of the fusion reactor auxiliary equipment.

[0028] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the water cooling system according to an embodiment of the present invention;

[0030] Figure 2 This is a flowchart illustrating a control method for a water-cooling system of a fusion reactor auxiliary equipment according to an embodiment of the present invention.

[0031] Figure 3 This is a schematic flowchart of the target water pump control method in the process cooling circuit according to an embodiment of the present invention;

[0032] Figure 4 This is a schematic flowchart of the energy-saving optimization control method for the heat dissipation circuit according to an embodiment of the present invention;

[0033] Figure 5 This is a flowchart illustrating the dynamic frequency update method according to an embodiment of the present invention;

[0034] Figure 6 This is a schematic flowchart of the method for correcting the running time of water pumps and cooling towers according to an embodiment of the present invention;

[0035] Figure 7 This is a schematic diagram of the overall control strategy of the water cooling system for fusion reactor auxiliary equipment according to an embodiment of the present invention;

[0036] Figure 8 This is a block diagram of the control device for the water cooling system of the fusion reactor auxiliary equipment according to an embodiment of the present invention;

[0037] Figure 9 This is a block diagram of a water-cooling system according to an embodiment of the present invention. Detailed Implementation

[0038] 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.

[0039] The following description, with reference to the accompanying drawings, describes a control method for a water-cooling system of a fusion reactor auxiliary equipment, a computer-readable storage medium, a control device for the water-cooling system, and a water-cooling system according to embodiments of the present invention.

[0040] Before introducing the control method and apparatus for the water cooling system of the fusion reactor auxiliary equipment of the present invention, the structure of the water cooling system of the present invention will be described first, such as... Figure 1As shown, the water cooling system 1000 includes a process cooling loop 100 and a heat dissipation loop 200. The process cooling loop comprises multiple parallel cooling branches, each corresponding to a set of fusion reactor auxiliary equipment. In each branch, the heat load (Q1, Q2, ..., Qn) generated by the fusion reactor auxiliary equipment is absorbed by the process loop cooling water. The heated cooling water enters the primary side of the plate heat exchangers (HX1, HX2, ..., HXn), where it exchanges heat with the cooling water on the heat dissipation loop side to cool down. The cooled water is then pumped by the main cooling water pump (CWP1). 1. CWP1 2、…、CWP1 n) drives the reactor back to auxiliary equipment, completing the process-side cooling cycle. The heat dissipation circuit includes multiple sets of cooling water pumps (CWP2). 1. CWP2 2、…、CWP2 The heat dissipation loop consists of a heat exchanger (CT1, CT2, ..., CTn) and cooling towers (CT1, CT2, ..., CTn). After absorbing heat on the secondary side of the plate heat exchanger, the cooling water enters the cooling tower, where it is cooled by the cooling tower fan and then driven by the cooling water pump back to the plate heat exchanger, achieving heat dissipation-side circulation. Through this structure, the process cooling loop is responsible for cooling each fusion reactor auxiliary device, while the heat dissipation loop, as the system's final heat sink, dissipates the accumulated heat into the environment.

[0041] Figure 2 This is a schematic flowchart of a control method for a water-cooling system of a fusion reactor auxiliary equipment according to an embodiment of the present invention.

[0042] Specifically, in some embodiments of the present invention, such as Figure 2 As shown, the water cooling system includes a process cooling circuit and a heat dissipation circuit. The control method for the water cooling system of the fusion reactor auxiliary equipment includes:

[0043] S101, Obtain the discharge plan of the fusion reactor.

[0044] Specifically, in this embodiment, the pulse discharge plan for the next cycle (such as within the next few hours or day) is obtained from the fusion reactor's central control system. The discharge plan includes the start time, end time, and input timing electrical power Pi(t) of each auxiliary system device during the discharge. This plan can be formulated in advance by the fusion reactor's central control center based on the power generation task and transmitted in real time to the upper control unit of the water-cooling system via the communication network.

[0045] S102, predicts the heat load and operating time of fusion reactor auxiliary equipment based on the discharge plan.

[0046] Specifically, in this embodiment, the operating time of the fusion reactor auxiliary equipment is determined according to the fusion reactor's discharge plan. Simultaneously, the input timing electrical power Pi(T) of each auxiliary system device (such as the fusion reactor auxiliary equipment) is acquired. Based on the auxiliary equipment's input power and its preset electrical... The thermal mapping relationship is used to predict the dynamic heat load Qi(T) = Pi(T) × η generated by each fusion reactor auxiliary device during the fusion reactor discharge phase, where η is the thermoelectric conversion efficiency. The heat loads of each fusion reactor auxiliary device are superimposed to obtain the total heat load time-series curve Q(T) = ∑Qi(T). This yields the heat load of the fusion reactor auxiliary devices and their corresponding operating times.

[0047] S103, determine the first target water pump in the process cooling circuit, the first preset water pump and the preset cooling tower in the heat dissipation circuit according to the heat load, and control the first target water pump, the first preset water pump and the preset cooling tower to turn on and off according to the running time.

[0048] Specifically, in this embodiment, based on the predicted heat load and design conditions, the number of the first target water pumps (i.e., main cooling water pumps) to be put into operation in the process cooling loop, and the number of the first preset water pumps (i.e., heat dissipation-side cooling water pumps) and preset cooling towers to be put into operation in the heat dissipation loop are determined. Then, according to the discharge plan, the start-up and shutdown of these devices are controlled considering the network delay characteristics: the start-up time is set to the transmission delay time τ before the device start-up time Ts, i.e., Ts-τ, to ensure that the cooling action takes effect when the heat load is generated; the shutdown time is set to the transmission delay time τ after the device shutdown time Te, i.e., Te+τ, to ensure that the residual heat of the device is completely discharged during the fusion reactor intermittent period. If the interval between two adjacent discharges is less than τ, the running time of the corresponding device is merged into a continuous operating window.

[0049] S104: When the first target water pump, the first preset water pump, and the preset cooling tower are all turned on, obtain the real-time heat load and real-time ambient wet-bulb temperature of the fusion reactor auxiliary equipment.

[0050] Specifically, in this embodiment, after all the predetermined water pumps and cooling towers are started according to step S103, the system enters the operation monitoring phase. Real-time heat load and real-time ambient wet-bulb temperature can be obtained through a field weather station or environmental monitoring module. Real-time ambient wet-bulb temperature can be obtained through an energy meter installed on the pipeline to obtain the real-time heat load of the fusion reactor auxiliary equipment. Furthermore, this invention does not specifically limit the method of obtaining real-time heat load and real-time ambient wet-bulb temperature.

[0051] S105, when the cooling water flow rate and cooling water pressure in the water cooling system are both within the preset error range, the first operating frequency of the first target water pump is determined according to the most unfavorable end of the process cooling loop to ensure safe heat dissipation of the fusion reactor auxiliary equipment, and the second operating frequency of the second target water pump and the third operating frequency of the target cooling tower in the heat dissipation loop are determined according to the real-time heat load and the real-time ambient wet-bulb temperature to reduce the energy consumption of the heat dissipation loop.

[0052] Specifically, in this embodiment, after all equipment is started according to the planned time period, the system enters a transient process. The flow rate and pressure of each branch in the process cooling loop, as well as the total flow rate and pressure of the heat dissipation loop, are monitored in real time. When the flow rate and pressure fluctuations at each monitoring point are within a preset error range, the system is considered to have stabilized. At this time, the first operating frequency of the first target water pump can be determined based on the most unfavorable end of the process cooling loop to ensure safe heat dissipation of the fusion reactor auxiliary equipment. For example, the process cooling loop can adopt constant pressure feedback control based on the most unfavorable end (such as the farthest end or the branch with the highest heat load), and reserve an appropriate safety margin to ensure sufficient cooling capacity is maintained under sudden increases in heat load or network disturbances. The most unfavorable end refers to the end point with the worst hydraulic conditions, lowest pressure, and most difficult-to-guarantee flow rate. The heat dissipation loop adopts collaborative optimization control: using real-time heat load and real-time ambient wet-bulb temperature as inputs, by establishing a functional relationship between the total power of the heat dissipation loop and the approach temperature, the optimal approach temperature that minimizes the total power is solved, and then the second operating frequency of the second target water pump and the third operating frequency of the target cooling tower are calculated to reduce the energy consumption of the heat dissipation loop.

[0053] S106, control the first target water pump according to the first operating frequency, control the second target water pump according to the second operating frequency, and control the target cooling tower according to the third operating frequency.

[0054] Specifically, in this embodiment, the calculated first operating frequency is sent to the frequency converter control unit of the first target water pump in the corresponding branch of the process cooling loop, so that the first target water pump in the corresponding branch operates at the first operating frequency to ensure the cooling pressure at the most unfavorable point. The second operating frequency is sent to the frequency converter control unit of the second target water pump in the heat dissipation loop, and the third operating frequency is sent to the frequency converter control unit of the target cooling tower fan. Each frequency converter control unit adjusts the motor speed in real time according to the received frequency signal, so that the system can minimize the total energy consumption while meeting the heat dissipation requirements.

[0055] Furthermore, in some embodiments of the present invention, Figure 3 This is a schematic flowchart of the target water pump control method in the process cooling circuit according to an embodiment of the present invention, as shown below. Figure 3As shown, the process cooling loop includes multiple branches, and each branch includes multiple fusion reactor auxiliary devices and a first target water pump. The first operating frequency of the first target water pump is determined based on the most unfavorable end of the process cooling loop to ensure safe heat dissipation for the fusion reactor auxiliary devices, including:

[0056] S201, Identify the target fusion reactor auxiliary equipment at the most unfavorable end of each branch of the process cooling loop.

[0057] Specifically, in this embodiment, for each branch in the process cooling loop, the target fusion reactor auxiliary equipment at the most unfavorable end of the branch is obtained. The target fusion reactor auxiliary equipment represents the most unfavorable cooling demand point in the branch. Ensuring the heat dissipation safety of this equipment can ensure the heat dissipation safety of other equipment in the branch.

[0058] S202, Obtain the actual cooling water pressure of the cooling circuit corresponding to the auxiliary equipment of the target fusion reactor.

[0059] Specifically, in this embodiment, a pressure sensor is installed at or near the cooling water inlet of the target fusion reactor auxiliary equipment in each branch. This pressure sensor collects the cooling water pressure at the equipment in real time. This pressure value reflects the actual cooling water pressure that the branch can provide to the most unfavorable equipment at the current pump operating frequency. If the pressure is too low, it may lead to insufficient cooling flow and overheating; if the pressure is too high, although it does not affect heat dissipation, it will increase unnecessary energy consumption. Therefore, it is necessary to compare the actual pressure with a preset safe target pressure to guide the adjustment of the pump frequency.

[0060] S203 adjusts the first operating frequency of the first target water pump in the corresponding branch according to the actual pressure of the cooling water, so that multiple fusion reactor auxiliary equipment in the branch can be safely cooled.

[0061] Specifically, in this embodiment, for each branch, a target pressure value is preset according to the safety heat dissipation requirements of the target fusion reactor auxiliary equipment in that branch (e.g., the minimum cooling water pressure required for normal operation of the equipment plus a safety margin). The actual pressure obtained in step S202 is compared with the target pressure, the pressure deviation is calculated, and the frequency adjustment amount of the first target water pump in that branch is calculated based on the pressure deviation, thereby obtaining the adjusted first operating frequency. If the actual pressure is lower than the target pressure, the water pump frequency is increased to increase the water supply pressure; if the actual pressure is higher than the target pressure, the water pump frequency is appropriately reduced to save energy, but it must be ensured that the pressure is not lower than the minimum safety threshold. The adjusted frequency is sent to the frequency converter controller of the first target water pump in that branch, so that the water pump speed changes accordingly, thereby maintaining the cooling water pressure at the target equipment within the set range. Through independent constant pressure control of each branch, it is ensured that the most unfavorable fusion reactor auxiliary equipment in all branches can obtain sufficient cooling capacity to achieve safe heat dissipation.

[0062] Furthermore, in some embodiments of the present invention, Figure 4 This is a flowchart illustrating the energy-saving optimization control method for the heat dissipation circuit according to an embodiment of the present invention, as shown below. Figure 4 As shown, the second operating frequency of the second target water pump and the third operating frequency of the target cooling tower in the heat dissipation loop are determined based on the real-time heat load and the real-time ambient wet-bulb temperature to reduce the energy consumption of the heat dissipation loop, including:

[0063] S301 determines the combination of multiple cooling water pumps and cooling towers that meet the preset requirements of the water cooling system in the heat dissipation circuit based on the real-time heat load and the real-time ambient wet-bulb temperature.

[0064] Specifically, in this embodiment, the preset requirements include the flow rate requirement and / or redundancy requirement of the water cooling system. Based on the real-time heat load Q(t) and the real-time ambient wet-bulb temperature tw, the minimum cooling water flow rate within the allowable temperature difference range is determined while maintaining the heat dissipation capacity. Under the premise of ensuring system reliability, all possible combinations of the number of operating cooling water pumps N_pump and the number of operating cooling towers N_ct are listed, and combinations that do not meet the flow rate requirement or redundancy backup requirement of the water cooling system are eliminated, resulting in a feasible combination set {[N_ct, N_pump]}.

[0065] S302, obtain the calculation model between the total operating power of the heat dissipation circuit and the approach temperature, where the approach temperature is the temperature difference between the cooling water outlet temperature of the heat dissipation circuit and the real-time ambient wet-bulb temperature.

[0066] Specifically, in this embodiment, the following computational model can be established:

[0067] Total cooling water flow Relationship with real-time heat load and approach temperature:

[0068]

[0069] in, Indicates the total cooling water flow rate. Indicates real-time heat load. This indicates the specific heat capacity of cooling water. Indicates the cooling water inlet temperature. This indicates the real-time ambient wet-bulb temperature. This indicates that the target temperature is approaching the set value.

[0070] Cooling water pump power in the heat dissipation circuit With total cooling water flow Relationship:

[0071]

[0072] in, Indicates the power of the cooling water pump. and Indicates preset parameters. and The value is determined by the number of pumps in operation. This indicates the total flow rate of cooling water.

[0073] Cooling tower approaches temperature and water vapor ratio Relationship:

[0074]

[0075] in, This indicates that the target is approaching the temperature setpoint. This represents the correction value for the real-time ambient wet-bulb temperature. Indicates the total cooling water flow rate. This indicates the airflow of the target cooling tower. Indicates preset parameters. The value of is determined by parameters such as cooling tower type and water quality.

[0076] Cooling tower fan power With air volume Relationship:

[0077]

[0078] in, Indicates the power of the cooling tower fan. and Indicates preset parameters. and The value is determined by the number of cooling towers in operation. This indicates the airflow of the target cooling tower.

[0079] The total power of the heat dissipation circuit is:

[0080]

[0081] in, This indicates the total power of the heat dissipation circuit. Indicates the total power of the heat dissipation circuit as A function with respect to the independent variable.

[0082] S303, calculates the minimum energy consumption and the approach temperature setpoint corresponding to the minimum energy consumption for each group of cooling water pumps and cooling towers based on the calculation model.

[0083] Specifically, in this embodiment, for each feasible combination of units, the real-time heat load is... Real-time ambient wet-bulb temperature , , , and Substituting the preset parameters into the above calculation model, in feasible range Within, numerical solution methods are used to find the solution that makes... smallest The value is recorded, along with the corresponding minimum energy consumption. .

[0084] S304, determine the target number of cooling water pumps and cooling towers to be turned on and the corresponding target approach temperature setpoint based on the minimum energy consumption of each group of cooling water pumps and cooling towers.

[0085] Specifically, in this embodiment, the minimum energy consumption corresponding to all feasible combinations is compared. The minimum value is taken. The number of cooling water pumps and cooling towers that are turned on corresponding to this minimum value is the target number of pumps that are turned on, and the corresponding approach temperature setpoint is the target approach temperature setpoint.

[0086] S305, obtains the inlet temperature of the cooling water in the heat dissipation circuit.

[0087] Specifically, in this embodiment, the cooling water inlet temperature of the heat dissipation circuit can be read in real time using a temperature sensor.

[0088] S306 determines the total cooling water flow rate of the heat dissipation circuit based on the cooling water inlet temperature, the target approach temperature setpoint, the real-time heat load, and the real-time ambient wet-bulb temperature, and determines the second operating frequency of the second target water pump based on the total cooling water flow rate.

[0089] Specifically, in this embodiment, the total cooling water flow rate can be calculated according to the following formula:

[0090]

[0091] in, Indicates the total cooling water flow rate. Indicates real-time heat load. This indicates the specific heat capacity of cooling water. Indicates the cooling water inlet temperature. This indicates the real-time ambient wet-bulb temperature. This indicates that the target temperature is approaching the set value.

[0092] Based on the frequency-flow linear model of cooling water pumps (i.e., flow rate is proportional to frequency), the total operating frequency of the second target water pump is inversely calculated from L. This total frequency is then evenly distributed to each of the second target water pumps that are already running to obtain the second operating frequency of each pump.

[0093] S307 determines the air volume of the target cooling tower based on the total cooling water flow rate, the target approach temperature setpoint, and the real-time ambient wet-bulb temperature, and determines the third operating frequency of the target cooling tower based on the air volume.

[0094] Specifically, in this embodiment, the calculated total cooling water flow rate is... Approaching the target temperature setpoint Substitute into the following formula:

[0095]

[0096] in, This indicates that the target is approaching the temperature setpoint. This represents the correction value for the real-time ambient wet-bulb temperature. Indicates the total cooling water flow rate. This indicates the airflow of the target cooling tower. Indicates preset parameters. The value of is determined by parameters such as the type of cooling tower and water quality. Therefore, the airflow of the target cooling tower can be determined using the above formula. Based on the frequency-airflow model of cooling tower fans (airflow is usually proportional to frequency), the total operating frequency of the target cooling tower is inversely calculated from G. This total frequency is then evenly distributed to each of the operating cooling tower fans to obtain the third operating frequency of each fan.

[0097] Furthermore, in some embodiments of the present invention, the preset requirements include the flow rate requirement and / or redundancy requirement of the water cooling system. The flow rate requirement refers to the minimum cooling water flow rate required to ensure that the heat dissipation circuit can effectively remove the real-time heat load. This flow rate must meet the heat transfer requirements of the plate heat exchanger and the cooling requirements of the process-side equipment. The specific value can be dynamically determined according to the design conditions or real-time heat load, but is not limited thereto. The redundancy requirement refers to the additional capacity required for backup or maintenance during equipment operation. For example, the cooling water pump or cooling tower may adopt an "N+1" or "N+X" backup configuration to ensure that the system can still operate safely when a single piece of equipment fails. However, the specific number of redundant units or the backup ratio can be flexibly set according to the actual engineering situation, and the present invention does not specifically limit this.

[0098] Furthermore, in some embodiments of the present invention, the total cooling water flow rate is calculated using the following formula:

[0099]

[0100] in, Indicates the total cooling water flow rate. Indicates real-time heat load. This indicates the specific heat capacity of cooling water. Indicates the cooling water inlet temperature. This indicates the real-time ambient wet-bulb temperature. This indicates that the target temperature is approaching the set value.

[0101] Furthermore, in some embodiments of the present invention, the air volume of the target cooling tower is calculated using the following formula:

[0102]

[0103] in, This indicates that the target is approaching the temperature setpoint. This represents the correction value for the real-time ambient wet-bulb temperature. Indicates the total cooling water flow rate. This indicates the airflow of the target cooling tower. All parameters are preset. The value is determined by parameters such as the type of cooling tower and the water quality.

[0104] Furthermore, in some embodiments of the present invention, Figure 5 This is a flowchart illustrating the dynamic frequency update method according to an embodiment of the present invention, as shown below. Figure 5 As shown, it includes:

[0105] S401, obtain the changes in real-time heat load and / or real-time ambient wet-bulb temperature.

[0106] Specifically, in this embodiment, during continuous system operation, the real-time heat load and real-time ambient wet-bulb temperature are reacquired and compared with the values ​​from the previous optimization calculation to calculate the change in real-time heat load and / or real-time ambient wet-bulb temperature.

[0107] S402, when the change is not within the preset fluctuation range, update the first operating frequency, the second operating frequency and the third operating frequency.

[0108] Specifically, in this embodiment, if the real-time heat load change rate exceeds a set threshold or the real-time ambient wet-bulb temperature change exceeds a set threshold, the system operating conditions are considered to have changed significantly. At this time, the system automatically jumps back to step S301 to re-execute the collaborative optimization calculation of the heat dissipation loop, obtaining new second and third operating frequencies; simultaneously, based on the new heat load and location information, the first operating frequency is also updated if necessary. The updated frequency is then sent to the corresponding device to achieve closed-loop adaptive adjustment, ensuring the system always operates in a low-energy-consumption state.

[0109] Furthermore, in some embodiments of the present invention, Figure 6 This is a schematic flowchart of the method for correcting the running time of water pumps and cooling towers according to an embodiment of the present invention, as shown below. Figure 6 As shown, the process cooling loop includes a plate heat exchanger, which is connected to the fusion reactor auxiliary equipment and the heat dissipation loop respectively. The method also includes:

[0110] S501, obtain the flow rate of cooling water in the process cooling loop and the pipe length between the fusion reactor auxiliary equipment and the heat exchanger at the most unfavorable end.

[0111] Specifically, in this embodiment, the average flow rate v of the cooling water in the process cooling loop and the total length l of the pipeline path from the furthest fusion reactor auxiliary equipment (i.e. the most unfavorable end fusion reactor auxiliary equipment) to the primary side outlet of the plate heat exchanger are obtained from design parameters or online monitoring systems.

[0112] S502, determine the running time correction value based on the flow rate and pipe length.

[0113] Specifically, in this embodiment, the transmission delay time τ = l / v is calculated, and τ is used as the runtime correction value. In addition, the runtime correction value can also be determined by field testing, and no specific limitation is made here.

[0114] S503, the operating time of the first target water pump, the first preset water pump and the preset cooling tower are corrected according to the operating time correction value.

[0115] Specifically, in this embodiment, the starting and stopping of the first target water pump, the first preset water pump, and the preset cooling tower are controlled according to the running time: the start-up time is advanced to the equipment start-up time Ts-τ, and the shutdown time is delayed to the equipment shutdown time Te+τ. Therefore, when the pulsed heat load actually reaches the primary side of the plate heat exchanger, sufficient cooling water circulation has already been established in the heat dissipation circuit, effectively avoiding instantaneous overheating of the equipment due to the lag in long-distance pipeline transmission.

[0116] In summary, the water cooling system control method of the present invention includes the following core steps, such as... Figure 7 As shown, Figure 7 This is a schematic diagram of the overall control strategy of the water cooling system for fusion reactor auxiliary equipment according to an embodiment of the present invention. First, the discharge plan of the fusion reactor is obtained, and based on the electrical... The heat mapping relationship predicts the heat load of the equipment during the pulse operation phase. Then, considering the transmission delay characteristics of the cooling pipe network, feedforward planning is performed on the operating time of the cooling water pumps and cooling towers to ensure that cooling capacity is in place before the heat load arrives. After the system starts up and real-time monitoring of operating parameters such as flow rate and pressure, the system optimization control strategy is executed: constant pressure control is adopted on the process side to ensure cooling demand and system safety and reliability as the primary objectives; on the heat dissipation side, coupled and coordinated control of the water pumps and cooling towers is implemented, with temperature approach as the coordinating variable, aiming to minimize the energy consumption of the heat dissipation loop. Finally, by monitoring environmental parameters and real-time heat load changes in real time, the equipment operating frequency is dynamically adjusted to achieve closed-loop adaptive optimization.

[0117] In summary, the control method for the water cooling system of the fusion reactor auxiliary equipment according to embodiments of the present invention first obtains the discharge plan of the fusion reactor, predicts the heat load and operating time of the auxiliary equipment based on the discharge plan, and then pre-selects the first target water pump in the process cooling loop and the first preset water pump and preset cooling tower in the heat dissipation loop according to the heat load. The equipment is then controlled to start and stop according to the operating time, effectively avoiding response lag and equipment overheating risks caused by long-distance pipeline transmission delays. The real-time ambient wet-bulb temperature of the auxiliary equipment is obtained. After the system is running stably, the first operating frequency of the first target water pump on the process side is determined based on the most unfavorable end of the process cooling loop to ensure the cooling safety of the most unfavorable point or high-load equipment. Simultaneously, based on the real-time heat load and real-time ambient wet-bulb temperature, the second operating frequency of the second target water pump and the third operating frequency of the target cooling tower are determined through a coupled energy consumption optimization model of the cooling water pump and cooling tower in the heat dissipation loop, minimizing the total power consumption on the heat dissipation side. This can effectively solve the problems of response lag and local overheating caused by pulse heat load changes and pipeline transmission delays, and significantly reduce the operating energy consumption of the water cooling system, thereby improving the operating economy and reliability of the water cooling system for fusion reactor auxiliary equipment.

[0118] Based on the control method for the water cooling system of fusion reactor auxiliary equipment proposed in the foregoing embodiments of the present invention, the present invention also proposes a computer-readable storage medium storing a control program for the water cooling system thereon. When the control program for the water cooling system is executed by a processor, it implements the control method for the water cooling system of the fusion reactor auxiliary equipment of the foregoing embodiments of the present invention.

[0119] According to the computer-readable storage medium of the present invention, the control program of the water cooling system is executed by the processor, which can effectively solve the problems of response lag and local overheating caused by pulse heat load changes and pipeline transmission delay, and significantly reduce the operating energy consumption of the water cooling system, thereby improving the operating economy and reliability of the water cooling system for fusion reactor auxiliary equipment.

[0120] Figure 8 This is a block diagram of the control device for the water cooling system of the fusion reactor auxiliary equipment according to an embodiment of the present invention.

[0121] Specifically, such as Figure 8 As shown, the water cooling system includes a process cooling circuit and a heat dissipation circuit. The control device 300 of the fusion reactor auxiliary equipment water cooling system includes a first acquisition module 10, a prediction module 20, a first determination module 30, a second acquisition module 40, a second determination module 50, and a control module 60.

[0122] The first acquisition module 10 is used to acquire the discharge plan of the fusion reactor; the prediction module 20 is used to predict the heat load and operating time of the fusion reactor auxiliary equipment based on the discharge plan; the first determination module 30 is used to determine the first target water pump in the process cooling loop, the first preset water pump and the preset cooling tower in the heat dissipation loop based on the heat load, and to control the opening and closing of the first target water pump, the first preset water pump and the preset cooling tower based on the operating time; the second acquisition module 40 is used to acquire the real-time ambient wet-bulb temperature of the fusion reactor auxiliary equipment at preset intervals when the first target water pump, the first preset water pump and the preset cooling tower are all turned on; the second determination module 40 is used to acquire the real-time ambient wet-bulb temperature of the fusion reactor auxiliary equipment at preset intervals. Module 50 is used to determine the first operating frequency of the first target water pump based on the most unfavorable end of the process cooling loop to ensure safe heat dissipation of the fusion reactor auxiliary equipment when the cooling water flow rate and cooling water pressure in the water cooling system are both within the preset error range, and to determine the second operating frequency of the second target water pump and the third operating frequency of the target cooling tower in the heat dissipation loop based on the heat load and real-time ambient wet-bulb temperature to reduce the energy consumption of the heat dissipation loop; control module 60 is used to control the first target water pump based on the first operating frequency, control the second target water pump based on the second operating frequency, and control the target cooling tower based on the third operating frequency.

[0123] In some embodiments of the present invention, the first target water pump includes multiple pumps, the process cooling circuit includes multiple branches, and each branch includes multiple fusion reactor auxiliary devices and a first target water pump. The second determining module 50 is specifically used to determine the target fusion reactor auxiliary device at the most unfavorable end of each branch of the process cooling circuit; obtain the actual cooling water pressure of the cooling circuit corresponding to the target fusion reactor auxiliary device; and adjust the first operating frequency of the first target water pump in the corresponding branch according to the actual cooling water pressure so that multiple fusion reactor auxiliary devices in the branch can safely dissipate heat.

[0124] In some embodiments of the present invention, the second determining module 50 is specifically used to determine the combination of multiple sets of cooling water pumps and cooling towers that meet the preset requirements of the water cooling system in the heat dissipation circuit according to the heat load and the real-time ambient wet-bulb temperature; to obtain a calculation model between the total operating power of the heat dissipation circuit and the approach temperature, wherein the approach temperature is the temperature difference between the cooling water outlet temperature of the heat dissipation circuit and the real-time ambient wet-bulb temperature; to calculate the minimum energy consumption of each set of cooling water pumps and cooling towers and the approach temperature setting value corresponding to the minimum energy consumption according to the calculation model; to determine the target number of cooling water pumps and cooling towers to be turned on and the corresponding target approach temperature setting value according to the minimum energy consumption of each set of cooling water pumps and cooling towers; to obtain the cooling water inlet temperature of the heat dissipation circuit; to determine the total cooling water flow rate of the heat dissipation circuit according to the cooling water inlet temperature, the target approach temperature setting value, the heat load and the real-time ambient wet-bulb temperature, and to determine the second operating frequency of the second target water pump based on the total cooling water flow rate; to determine the air volume of the target cooling tower according to the total cooling water flow rate, the target approach temperature setting value and the real-time ambient wet-bulb temperature, and to determine the third operating frequency of the target cooling tower based on the air volume.

[0125] In some embodiments of the present invention, the preset requirements include the flow rate requirements and / or redundancy requirements of the water cooling system.

[0126] In some embodiments of the present invention, the total cooling water flow rate is calculated using the following formula:

[0127]

[0128] in, Indicates the total cooling water flow rate. Indicates heat load, This indicates the specific heat capacity of cooling water. Indicates the cooling water inlet temperature. This indicates the real-time ambient wet-bulb temperature. This indicates that the target temperature is approaching the set value.

[0129] In some embodiments of the present invention, the air volume of the target cooling tower is calculated using the following formula:

[0130]

[0131] in, This indicates that the target is approaching the temperature setpoint. This represents the correction value for the real-time ambient wet-bulb temperature. Indicates the total cooling water flow rate. This indicates the airflow of the target cooling tower. All parameters are preset.

[0132] In some embodiments of the present invention, the second acquisition module 40 is further configured to acquire the changes in real-time heat load and / or real-time ambient wet-bulb temperature; and update the first operating frequency, the second operating frequency and the third operating frequency when the changes are not within a preset fluctuation range.

[0133] In some embodiments of the present invention, the process cooling loop includes a plate heat exchanger, which is connected to the fusion reactor auxiliary equipment and the heat dissipation loop respectively. The control module 60 is also used to obtain the flow rate of the cooling water in the process cooling loop and the pipe length between the fusion reactor auxiliary equipment and the heat exchanger at the most unfavorable end; determine the running time correction value according to the flow rate and the pipe length; and correct the running time of the first target water pump, the first preset water pump and the preset cooling tower according to the running time correction value.

[0134] It should be noted that other specific embodiments of the control device for the water cooling system of the fusion reactor auxiliary equipment proposed in the embodiments of the present invention can be found in the specific embodiments of the control method for the water cooling system of the fusion reactor auxiliary equipment described in the foregoing embodiments of the present invention. To reduce redundancy, they will not be repeated here.

[0135] In summary, the control device for the water cooling system according to the embodiments of the present invention can effectively solve the problems of response lag and local overheating caused by pulse heat load changes and pipeline transmission delays, and significantly reduce the operating energy consumption of the water cooling system, thereby improving the operating economy and reliability of the water cooling system for fusion reactor auxiliary equipment.

[0136] Figure 9 This is a block diagram of a water-cooling system according to an embodiment of the present invention.

[0137] like Figure 9 As shown, the water cooling system 1000 includes the control device 300 of the fusion reactor auxiliary equipment water cooling system described in the above embodiment of the present invention.

[0138] According to the water cooling system of the present invention, by adopting the water cooling system of the above embodiments of the present invention, the response lag and local overheating caused by pulse heat load changes and pipeline transmission delay can be effectively solved, and the operating energy consumption of the water cooling system can be significantly reduced, thereby improving the operating economy and reliability of the water cooling system for fusion reactor auxiliary equipment.

[0139] 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.

[0140] 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.

[0141] 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.

[0142] 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.

[0143] 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.

[0144] 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.

[0145] 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.

[0146] 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 control method for a water-cooling system of a fusion reactor auxiliary equipment, characterized in that, The water cooling system includes a process cooling circuit and a heat dissipation circuit, and the method includes: Obtain the discharge plan of the fusion reactor; The heat load and operating time of the fusion reactor auxiliary equipment are predicted based on the discharge plan. The first target water pump in the process cooling circuit, the first preset water pump in the heat dissipation circuit, and the preset cooling tower are determined according to the heat load, and the first target water pump, the first preset water pump, and the preset cooling tower are controlled to turn on and off according to the running time. When the first target water pump, the first preset water pump and the preset cooling tower are all turned on, the real-time heat load and real-time ambient wet-bulb temperature of the fusion reactor auxiliary equipment are obtained. When the cooling water flow rate and cooling water pressure in the water cooling system are both within the preset error range, the first operating frequency of the first target water pump is determined according to the most unfavorable end of the process cooling loop to ensure safe heat dissipation of the fusion reactor auxiliary equipment, and the second operating frequency of the second target water pump and the third operating frequency of the target cooling tower in the heat dissipation loop are determined according to the real-time heat load and the real-time ambient wet-bulb temperature to reduce the energy consumption of the heat dissipation loop. The first target water pump is controlled according to the first operating frequency, the second target water pump is controlled according to the second operating frequency, and the target cooling tower is controlled according to the third operating frequency.

2. The control method for the water cooling system of the fusion reactor auxiliary equipment according to claim 1, characterized in that, The first target water pump includes multiple pumps, and the process cooling circuit includes multiple branches, each branch including multiple fusion reactor auxiliary devices and a first target water pump. A first operating frequency of the first target water pump is determined based on the most unfavorable end of the process cooling circuit to ensure safe heat dissipation for the fusion reactor auxiliary devices, including: Identify the target fusion reactor auxiliary equipment at the most unfavorable end of each branch of the process cooling loop; Obtain the actual pressure of the cooling water in the cooling circuit corresponding to the auxiliary equipment of the target fusion reactor; The first operating frequency of the first target water pump in the corresponding branch is adjusted according to the actual pressure of the cooling water so that multiple fusion reactor auxiliary devices in the branch can be safely cooled.

3. The control method for the water cooling system of the fusion reactor auxiliary equipment according to claim 1, characterized in that, Determining the second operating frequency of the second target water pump and the third operating frequency of the target cooling tower in the heat dissipation loop based on the real-time heat load and the real-time ambient wet-bulb temperature to reduce the energy consumption of the heat dissipation loop includes: The number of multiple cooling water pumps and cooling towers that meet the preset requirements of the water cooling system in the heat dissipation circuit is determined based on the real-time heat load and the real-time ambient wet-bulb temperature. A calculation model is obtained between the total operating power of the heat dissipation circuit and the approach temperature, wherein the approach temperature is the temperature difference between the cooling water outlet temperature of the heat dissipation circuit and the real-time ambient wet-bulb temperature. The minimum energy consumption for each group of cooling water pumps and cooling towers to be turned on and the approach temperature setpoint corresponding to the minimum energy consumption are calculated based on the calculation model. The target number of cooling water pumps and cooling towers to be turned on and the corresponding target approach temperature setpoint are determined based on the minimum energy consumption of each group of cooling water pumps and cooling towers to be turned on. Obtain the cooling water inlet temperature of the heat dissipation circuit; The total flow rate of the cooling water in the heat dissipation circuit is determined based on the cooling water inlet temperature, the target approach temperature setpoint, the real-time heat load, and the real-time ambient wet-bulb temperature, and the second operating frequency of the second target water pump is determined based on the total flow rate of the cooling water. The air volume of the target cooling tower is determined based on the total cooling water flow rate, the target approach temperature setpoint, and the real-time ambient wet-bulb temperature, and the third operating frequency of the target cooling tower is determined based on the air volume.

4. The control method for the water cooling system of the fusion reactor auxiliary equipment according to claim 3, characterized in that, The preset requirements include the flow rate requirements and / or redundancy requirements of the water cooling system.

5. The control method for the water cooling system of the fusion reactor auxiliary equipment according to claim 3, characterized in that, The total flow rate of the cooling water is calculated using the following formula: in, This indicates the total flow rate of the cooling water. This indicates the real-time heat load. This indicates the specific heat capacity of cooling water. This indicates the inlet temperature of the cooling water. This indicates the real-time ambient wet-bulb temperature. This indicates that the target temperature is approaching the set value.

6. The control method for the water cooling system of the fusion reactor auxiliary equipment according to claim 3, characterized in that, The air volume of the target cooling tower is calculated using the following formula: in, This indicates that the target is approaching the set temperature value. This represents the correction value for the real-time ambient wet-bulb temperature. This indicates the total flow rate of the cooling water. This indicates the air volume of the target cooling tower. All parameters are preset.

7. The control method for the water cooling system of the fusion reactor auxiliary equipment according to claim 1, characterized in that, The method further includes: Obtain the changes in the real-time heat load and / or the real-time ambient wet-bulb temperature; When the change is not within the preset fluctuation range, the first operating frequency, the second operating frequency, and the third operating frequency are updated.

8. The control method for the water cooling system of the fusion reactor auxiliary equipment according to claim 1, characterized in that, The process cooling circuit includes a plate heat exchanger, which is connected to both the fusion reactor auxiliary equipment and the heat dissipation circuit. The method further includes: Obtain the flow rate of cooling water in the process cooling loop and the pipe length between the fusion reactor auxiliary equipment at the most unfavorable end and the heat exchanger; The running time correction value is determined based on the flow rate and the pipe length; The operating times of the first target water pump, the first preset water pump, and the preset cooling tower are corrected according to the operating time correction value.

9. A computer-readable storage medium, characterized in that, It stores a control program for a fusion reactor auxiliary equipment water cooling system, which, when executed by a processor, implements the control method for the fusion reactor auxiliary equipment water cooling system according to any one of claims 1-8.

10. A control device for a water-cooling system of a fusion reactor auxiliary equipment, characterized in that, The water cooling system includes a process cooling circuit and a heat dissipation circuit, and the device includes: The first acquisition module is used to acquire the discharge plan of the fusion reactor; The prediction module is used to predict the heat load and operating time of the fusion reactor auxiliary equipment based on the discharge plan; The first determining module is used to determine the first target water pump in the process cooling circuit, the first preset water pump in the heat dissipation circuit, and the preset cooling tower according to the heat load, and to control the first target water pump, the first preset water pump, and the preset cooling tower to turn on and off according to the running time. The second acquisition module is used to acquire the real-time heat load and real-time ambient wet-bulb temperature of the fusion reactor auxiliary equipment when the first target water pump, the first preset water pump and the preset cooling tower are all turned on. The second determining module is used to determine the first operating frequency of the first target water pump based on the most unfavorable end of the process cooling circuit when the cooling water flow rate and cooling water pressure in the water cooling system are both within a preset error range, so as to ensure the safe heat dissipation of the fusion reactor auxiliary equipment; and to determine the second operating frequency of the second target water pump and the third operating frequency of the target cooling tower in the heat dissipation circuit based on the real-time heat load and the real-time ambient wet-bulb temperature, so as to reduce the energy consumption of the heat dissipation circuit. The control module is used to control the first target water pump according to the first operating frequency, control the second target water pump according to the second operating frequency, and control the target cooling tower according to the third operating frequency.

11. A water-cooling system, characterized in that, The control device includes the water cooling system of the fusion reactor auxiliary equipment as described in claim 10.

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