Reactor control method and apparatus, and computer device and storage medium

Abstract

The present application relates to a reactor control method and apparatus, and a computer device, a storage medium and a computer program product. The method comprises: selecting a first target control rod, a second target control rod and remaining control rods from among all control rods; controlling the second target control rod and the remaining control rods to change from inserted-rod positions to withdrawn-rod positions, acquiring a detector count rate of when the first target control rod is located at the inserted-rod position, controlling the first target control rod to change to the withdrawn-rod position, and acquiring the all-rod-out count rate of a reactor; executing the following steps on each of the remaining control rods: controlling the remaining control rod to change to the inserted-rod position, acquiring a detector count rate of when the remaining control rod is located at the inserted-rod position, and controlling the remaining control rod to change from the inserted-rod position to the withdrawn-rod position; then controlling the second target control rod to change to the inserted-rod position, and acquiring a detector count rate of when the second target control rod is located at the inserted-rod position; and performing statistical analysis on the all-rod-out count rate and the detector count rates that respectively correspond to the control rods, and determining the control rod worth of the reactor. In this way, the efficiency of measurement can be improved.

Description

Reactor control method, device, computer equipment and storage medium

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the China Patent Office on February 5, 2024, with application number 2024101656670, entitled “Reactor Control Method, Device, Computer Equipment and Storage Medium,” the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application relates to the technical field of reactor startup physical testing, and in particular to a reactor control method, apparatus, computer equipment, storage medium, and computer program product. Background Art

[0004] With the development of the field of reactor startup physical test technology, a reactor control method has emerged that can measure the value of control rods before the reactor reaches criticality. The control rod value is determined by the change in the source range detector count rate when the control rod is inserted and withdrawn in the subcritical state. This can save the time required for reactor startup and thus improve the economy of the unit.

[0005] In order to reduce the interference effect between control rods and improve the measurement accuracy, it is generally necessary to construct the core state of full and target control rod insertion and full withdrawal of the remaining control rods in the subcritical state, and then determine the value of the control rods. There is no corresponding control rod state in the traditional startup physics test. If a special test window needs to be applied for to carry out this test during the startup process, it will cause problems of taking up time and reducing the economic efficiency of the method. Summary of the Invention

[0006] According to various embodiments of the present application, a reactor control method, apparatus, computer equipment, computer-readable storage medium, and computer program product are provided that can improve experimental efficiency.

[0007] In a first aspect, the present application provides a reactor control method. The method comprises:

[0008] In an initial state, a first target control rod, a second target control rod, and remaining control rods other than the first target control rod and the second target control rod are selected from all control rods of the reactor; wherein the initial state includes: the reactor is in a hot shutdown state, and all the control rods are in the rod insertion position;

[0009] controlling the second target control rod and each of the remaining control rods to change from the rod insertion position to the rod withdrawal position, and obtaining a detector count rate corresponding to when the first target control rod is located at the rod insertion position;

[0010] controlling the first target control rod to change to a rod withdrawal position, and obtaining a full withdrawal count rate of the reactor;

[0011] The following steps are performed on each of the remaining control rods: controlling the remaining control rod to change to the rod insertion position, obtaining a detector count rate corresponding to the remaining control rod being in the rod insertion position, and controlling the remaining control rod to change from the rod insertion position to the rod withdrawal position;

[0012] controlling the second target control rod to change to a rod insertion position, and obtaining a detector count rate corresponding to when the second target control rod is located at the rod insertion position;

[0013] Statistical analysis is performed on the total count rate and the detector count rate corresponding to each control rod to determine the control rod value of the reactor.

[0014] In one embodiment, controlling the second target control rod and each of the remaining control rods to change from the rod-inserted position to the rod-extracted position includes:

[0015] determining a plurality of power control rods belonging to a power rod group among the second target control rod and each of the remaining control rods;

[0016] For each power control rod in the same power rod group, an alternate step-by-step approach is adopted to change each power control rod from an inserted rod position to a pulled-out rod position.

[0017] In one embodiment, obtaining a detector count rate corresponding to when the first target control rod is located at the rod insertion position includes:

[0018] Obtaining a first counting rate of the source range detector at a current moment and a second counting rate at a historical moment;

[0019] When the statistical values ​​of the first count rate and the second count rate meet a stability condition, the first count rate is determined as the detector count rate corresponding to when the first target control rod is located at the rod insertion position.

[0020] In one embodiment, the initial state further includes: the boron concentration in the reactor core is within a preset range, and the method further includes:

[0021] controlling the second target control rod to change from the inserted rod position to the adjusted rod position, and maintaining the first target control rod and each of the remaining control rods in the extended rod position, wherein the adjusted rod position is a state in which the control rod is partially inserted;

[0022] An adjustment step is performed, the adjustment step comprising: diluting the boron concentration of the reactor; and after the reactor meets a preset dilution stopping criterion, controlling the second target control rod to continuously change its position along the rod adjustment position to the rod withdrawal position until the reactor reaches a critical state, and stopping changing the second target control rod position.

[0023] In one embodiment, the reactor control method further includes:

[0024] If the second target control rod has been raised from the adjustment rod position to the rod raised position and the reactor has not yet reached the critical state, the second target control rod is controlled to change to the adjustment rod position, and the adjustment step is repeated until the reactor reaches the critical state.

[0025] In one embodiment, the reactor control method further includes:

[0026] determining lifting and inserting parameters of the control rod with the rod position changed;

[0027] Statistical analysis is performed on the lifting and insertion parameters of the same control rod to complete the lifting and insertion performance verification test of the control rod.

[0028] In a second aspect, the present application also provides a reactor control device. The device includes:

[0029] a control rod selection module, configured to select, in an initial state, a first target control rod, a second target control rod, and remaining control rods other than the first target control rod and the second target control rod from all control rods of the reactor; wherein the initial state includes: the reactor is in a hot shutdown state, and all the control rods are in the rod insertion position;

[0030] a detector count rate determination module, configured to control the second target control rod and each of the remaining control rods to change from the rod insertion position to the rod withdrawal position, and obtain a detector count rate corresponding to when the first target control rod is in the rod insertion position;

[0031] a full withdrawal count rate determination module, configured to control the first target control rod to change to a rod withdrawal position and obtain a full withdrawal count rate of the reactor;

[0032] a remaining control rod execution module, configured to execute the following steps for each of the remaining control rods: controlling the remaining control rod to change to the rod insertion position, obtaining a detector count rate corresponding to the remaining control rod being in the rod insertion position, and controlling the remaining rod to change from the rod insertion position to the rod withdrawal position;

[0033] The detector count rate determination module is further configured to control the second target control rod to change to a rod insertion position, and obtain a detector count rate corresponding to when the second target control rod is located at the rod insertion position;

[0034] The control rod value determination module is used to perform statistical analysis on the total count rate and the detector count rate corresponding to each control rod to determine the control rod value of the reactor.

[0035] In one embodiment, the detector count rate determination module is configured to:

[0036] determining a plurality of power control rods belonging to a power rod group among the second target control rod and each of the remaining control rods;

[0037] For each power control rod in the same power rod group, an alternate step-by-step approach is adopted to change each power control rod from an inserted rod position to a pulled-out rod position.

[0038] In one embodiment, the detector count rate determination module is further configured to:

[0039] Obtaining a first counting rate of the source range detector at a current moment and a second counting rate at a historical moment;

[0040] When the statistical values ​​of the first count rate and the second count rate meet a stability condition, the first count rate is determined as the detector count rate corresponding to when the first target control rod is located at the rod insertion position.

[0041] In one embodiment, the initial state further includes: the boron concentration in the reactor core is within a preset range, and the device further includes a reactor criticality test module for:

[0042] controlling the second target control rod to change from the inserted rod position to the adjusted rod position, and maintaining the first target control rod and each of the remaining control rods in the extended rod position, wherein the adjusted rod position is a state in which the control rod is partially inserted;

[0043] An adjustment step is performed, the adjustment step comprising: diluting the boron concentration of the reactor; and after the reactor meets a preset dilution stopping criterion, controlling the second target control rod to continuously change its position along the rod adjustment position to the rod withdrawal position until the reactor reaches a critical state, and stopping changing the second target control rod position.

[0044] In one embodiment, the apparatus further includes an adjustment step repeating module configured to:

[0045] If the second target control rod has been raised from the adjustment rod position to the rod raised position and the reactor has not yet reached the critical state, the second target control rod is controlled to change to the adjustment rod position, and the adjustment step is repeated until the reactor reaches the critical state.

[0046] In one embodiment, the apparatus further includes a lifting and inserting performance determination module, configured to:

[0047] determining lifting and inserting parameters of the control rod with the rod position changed;

[0048] Statistical analysis is performed on the lifting and insertion parameters of the same control rod to complete the lifting and insertion performance verification test of the control rod.

[0049] In a third aspect, the present application further provides a computer device comprising a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of the above method when executing the computer program.

[0050] In a fourth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, which implements the steps of the above method when executed by a processor.

[0051] In a fifth aspect, the present application further provides a computer program product, which includes a computer program that implements the steps of the above method when executed by a processor.

[0052] The details of one or more embodiments of the present application are set forth in the accompanying drawings and the description below. Other features, objects, and advantages of the present application will become apparent from the description, drawings, and claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] FIG1 is a diagram showing an application environment of a reactor control method according to an embodiment;

[0054] FIG2 is a schematic flow chart of a reactor control method according to one embodiment;

[0055] FIG3 is a schematic flow diagram of a reactor control step in one embodiment;

[0056] FIG4 is a schematic flow chart of a reactor control method according to another embodiment;

[0057] FIG5 is a block diagram of a reactor control device according to one embodiment;

[0058] FIG6 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0059] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0060] The reactor control method provided by the embodiment of the present application can be applied in the application environment shown in FIG1 . The terminal 102 communicates with a plurality of control rods 104 and a source range detector 106 through a network. The terminal 102 may be, but is not limited to, various personal computers, laptops, smart phones, tablet computers, Internet of Things devices, and portable wearable devices. The Internet of Things devices may be smart speakers, smart TVs, smart air conditioners, smart car devices, etc. The source range detector 106 is used to detect the count rate of the reactor. In the process of the terminal 102 controlling the reactor, in the initial state, the first target control rod, the second target control rod, and the remaining control rods other than the first target control rod and the second target control rod are selected from all the control rods 104 of the reactor; wherein the initial state includes: the reactor is in a hot shutdown state, and all control rods are in the rod insertion position; the second target control rod and the remaining control rods are controlled to change from the rod insertion position to the rod withdrawal position, and the detector count rate corresponding to the first target control rod detected by the source range detector 106 when it is in the rod insertion position is obtained; the first target control rod is controlled to change to the rod withdrawal position, and The full withdrawal count rate of the reactor detected by the source range detector 106 is obtained; the following steps are performed for each remaining control rod: the remaining control rod is controlled to change to the rod insertion position, the detector count rate corresponding to the remaining control rod detected by the source range detector 106 when the remaining control rod is in the rod insertion position is obtained, and the remaining rod is controlled to change from the rod insertion position to the rod withdrawal position; the second target control rod is controlled to change to the rod insertion position, the detector count rate corresponding to the second target control rod detected by the source range detector 106 when the second target control rod is in the rod insertion position is obtained; statistical analysis is performed on the full withdrawal count rate and the detector count rate corresponding to each control rod to determine the control rod value of the reactor.

[0061] In one embodiment, as shown in FIG2 , a reactor control method is provided, which is described by taking the method applied to the terminal in FIG1 as an example, and includes the following steps:

[0062] Step S202: In an initial state, a first target control rod, a second target control rod, and remaining control rods other than the first target control rod and the second target control rod are selected from all control rods of the reactor. The initial state includes: the reactor is in a hot shutdown state, and all control rods are in the rod insertion position.

[0063] A reactor, also known as an atomic reactor or nuclear reactor, is a device capable of maintaining a controlled, self-sustaining chain nuclear fission reaction to achieve nuclear energy utilization. The reactor utilizes nuclear fuel through a strategic arrangement that allows for a self-sustaining chain nuclear fission process without the need for additional neutron sources. Strictly speaking, the term "reactor" encompasses fission reactors, fusion reactors, and hybrid fission-fusion reactors, but generally refers only to fission reactors. "Rod insertion position" refers to the control rods being in step 5.

[0064] To control the chain reaction rate at a predetermined level, neutron-absorbing rods, called control rods, are made of materials known as control rods. These rods compensate for fuel consumption and regulate the reaction rate. Absorber materials typically include boron, boron carbide, cadmium, and silver-indium-cadmium. A primary or secondary target control rod is a rod selected from multiple control rods. All control rods can be designated as primary or secondary. The remaining control rods are those other than the primary or secondary target rods. Depending on the primary or secondary target rod, the remaining control rods have different corresponding rods. When the reactor is not operating, the control rods remain inserted in the core. They are raised during startup and adjusted during operation as needed. In the event of an accident, all control rods automatically and rapidly descend, halting the chain fission reaction within the reactor.

[0065] A hot shutdown is a short-term shutdown in which control rods are inserted into the core, causing the reactor to become subcritical. The boron concentration is greater than the minimum shutdown depth, placing the reactor in subcriticality (<0.99). Subcriticality, on the other hand, occurs after the initial loading of the reactor, with all control rods fully inserted into the core. The primary coolant contains a high boron concentration, resulting in nearly complete neutron absorption. At this point, the neutron production rate is less than the neutron destruction rate, and the core is in a subcritical state, often deeply subcritical.

[0066] The control rod value measurement process can be performed during reactor startup, that is, from the time the reactor is in hot shutdown and all control rods are in the inserted position until the reactor reaches criticality. Combining control rod value measurement with reactor startup can minimize measurement time. Because measuring control rod value requires establishing an ARO (all rods out) core state and a target core state with all control rods inserted and all remaining control rods extended, it is necessary to first select a first target control rod and a second target control rod from each control rod, with the reactor in hot shutdown and all control rods in the inserted position. The remaining control rods, excluding the first and second target control rods, are then considered the remaining control rods, facilitating the initial establishment of the first target core state with all remaining control rods extended. It will be appreciated that the selection of the first target control rod or the second target control rod is flexible. For example, for the temperature control rod R, power control rods G1, G2, N1, and N2, and shutdown rods SA, SB, SC, and SD, the SA control rod can be determined as the first target control rod and the R control rod as the second target control rod, and then G1, G2, N1, N2, SB, SC, and SD are the remaining control rods. Alternatively, the R control rod can be determined as the first target control rod and the SA control rod as the second target control rod, and then G1, G2, N1, N2, SB, SC, and SD are the remaining control rods. In one embodiment, the first and second target control rods can be selected based on the control rod type, and the remaining control rods except for the first and second target control rods can be defined as the remaining control rods. In another embodiment, the first and second target control rods can be selected based on the order of the control rods, and the remaining control rods except for the first and second target control rods can be defined as the remaining control rods.

[0067] Step S204: Control the second target control rod and the remaining control rods to change from the rod insertion position to the rod withdrawal position, and obtain the detector count rate corresponding to when the first target control rod is in the rod insertion position.

[0068] Controlling each remaining control rod to change from a rod insertion position to a rod extension position;

[0069] The rod position refers to the control rod position being at step 225. The detector count rate refers to the count rate detected by the source range detector, which reflects the neutron fluence rate level in the reactor core.

[0070] When all control rods in the reactor are in the rod insertion position, the second target control rod and the remaining control rods can be controlled to move from the rod insertion position to the rod withdrawal position. At this point, the first target control rod remains in the rod insertion position, creating a core state in which the first target control rod is inserted and the remaining control rods are all withdrawn. For example, when controlling the second target control rod and the remaining control rods to move from the rod insertion position to the rod withdrawal position, all control rod groups can be withdrawn to the rod withdrawal position in the order of rods R, SB, SC, SD, N2, N1, G2, and G1, with the N2, N1, G2, and G1 control rods being withdrawn in a staggered manner. Furthermore, the process of controlling the second target control rod and the remaining control rods to move from the rod insertion position to the rod withdrawal position can be executed by a terminal or manually by a technician. When the first target control rod remains in the inserted position, the core state of the reactor is such that the first target control rod is inserted and all other control rods are extended, achieving the target state. Therefore, the detector count rate corresponding to the first target control rod in the inserted position can be obtained. Based on this detector count rate, the control rod value of the first target control rod can be determined. It will be appreciated that the process of obtaining the detector count rate of the first target control rod can be either active or passive.

[0071] Step S206: Control the first target control rod to change to the withdrawn position, and obtain the full withdrawal count rate of the reactor.

[0072] The full withdrawal count rate refers to the detector count rate of the reactor detected by the source range detector when all the control rods of the reactor are in the withdrawn position.

[0073] Before the first target control rod is moved to the withdrawn position, the first target control rod is in the inserted position, while the remaining control rods are in the withdrawn position. Therefore, the ARO core state can be constructed by simply moving the first target control rod to the withdrawn position. Therefore, when the first target control rod is moved to the withdrawn position, the reactor core is now in the ARO core state. Obtaining the full withdrawal count rate for the reactor yields the detector count rate for the ARO core state. It should be noted that multiple ARO states can occur during the subcritical rod insertion process, and the count rate from one of these states can be selected for calculation as needed.

[0074] Step S208: performing the following steps for each remaining control rod: controlling the remaining control rod to change to the rod insertion position, obtaining the detector count rate corresponding to the remaining control rod in the rod insertion position, and controlling the remaining rod to change from the rod insertion position to the rod withdrawal position.

[0075] Before executing the steps for each remaining control rod, the detector count rates for two core states have been measured: the detector count rate for the reactor with the first target control rod in the rod-extracted position and the remaining control rods in the rod-inserted position, and the full-extraction count rate. It is also necessary to obtain the detector count rates for the reactor with each remaining control rod in the rod-extracted position and the second target control rod in the rod-extracted position. Therefore, for each remaining control rod, the detector count rate for the reactor with the remaining control rod in the rod-extracted position and the remaining control rods in the rod-inserted position must be counted. In other words, the remaining control rod must be controlled to change to the rod-inserted position by obtaining the detector count rate corresponding to the remaining control rod in the rod-inserted position. Since the steps executed for each remaining control rod are identical, and only one control rod is in the rod-inserted position each time the detector count rate is obtained, it is necessary to control the remaining rod to change from the rod-inserted position to the rod-extracted position after obtaining the detector count rate corresponding to the remaining control rod in the rod-inserted position.

[0076] Step S210: Control the second target control rod to change to the rod insertion position, and obtain the detector count rate corresponding to the second target control rod being in the rod insertion position.

[0077] The second target control rod is the last control rod among all the control rods of the reactor to change its rod position state to the inserted rod position.

[0078] Before controlling the second target control rod to be more in the inserted position, only one core state is left for the control rod value measurement process, namely, the core state in which the second target control rod is in the inserted position and the remaining control rods are in the withdrawn position. Therefore, the second target control rod can be controlled to be more in the inserted position, and the detector count rate corresponding to when the second target control rod is in the inserted position is obtained, thereby obtaining the detector count rates of all required core states.

[0079] Step S212: Statistically analyze the total count rate and the detector count rate corresponding to each control rod to determine the control rod value of the reactor.

[0080] Among them, the control rod value refers to the absolute value of the reactivity change of the reactor core caused by quickly inserting a control rod from the withdrawn position to the inserted position under given conditions. The control rod value of the reactor covers the core state of ARO and the control rod value under the core state of each target control rod inserted and all other control rods withdrawn.

[0081] Using pre-calculated correction factors, the count rates detected by the source range detector are corrected to determine the corresponding control rod value. After obtaining the detector count rate corresponding to the second target control rod's insertion position, the overall count rate and the detector count rate corresponding to each control rod are corrected based on the correction factors to determine the reactor's control rod value.

[0082] In the above-mentioned reactor control method, in an initial state, a first target control rod, a second target control rod, and remaining control rods other than the first and second target control rods are selected from all control rods in the reactor. The initial state includes: when the reactor is in a hot shutdown state and all control rods are in the rod insertion position, the second target control rod and each remaining control rod are controlled to change from the rod insertion position to the rod withdrawal position, and the detector count rate corresponding to when the first target control rod is in the rod insertion position is obtained. The detector count rate for a core state in which the first target control rod is inserted and all remaining control rods are withdrawn can be obtained. Thereafter, the first target control rod is controlled to change to the rod withdrawal position, and the full withdrawal count rate of the reactor is obtained. The following steps are performed for each remaining control rod: controlling the remaining control rod to change to the rod insertion position, obtaining the detector count rate corresponding to when the remaining control rod is in the rod insertion position, and controlling the remaining rod to change from the rod insertion position to the rod withdrawal position. It will be understood that the steps performed for each remaining control rod are a repetitive process. The purpose is to measure the detector count rates for multiple core states when each remaining control rod is in the insertion position and all control rods except the remaining control rod being measured are in the withdrawal position. After the above steps are completed, all control rods in the reactor are in the withdrawal position. At this time, the second target control rod is controlled to be inserted further, and the corresponding detector count rate when the second target control rod is in the insertion position is obtained. This can obtain the detector count rates for all core states required for control rod value measurement. Compared with the method of first withdrawing all control rod groups and then inserting and withdrawing the first control rod group, this method eliminates the repeated insertion and withdrawal operations. In addition, at this time, the reactor control rod state is the second target control rod in the insertion position and the remaining control rods in the withdrawal position, which is exactly the initial state for the reactor criticality test, facilitating the subsequent reactor criticality test process. Finally, the total withdrawal count rate and the detector count rate corresponding to each control rod are statistically analyzed to determine the reactor control rod value, thereby improving experimental efficiency.

[0083] In one embodiment, controlling the second target control rod and each remaining control rod to change from the rod insertion position to the rod withdrawal position includes: determining a plurality of power control rods belonging to a power rod group among the second target control rod and each remaining control rod; and for each power control rod in the same power rod group, changing each power control rod from the rod insertion position to the rod withdrawal position by adopting an alternating step-by-step approach to withdraw the power control rods.

[0084] Among them, the synchro mode means that when there is an overlapping part between one control rod and another control rod, when one control rod is raised to a certain rod position, the other control rod can be raised together with it. That is, in the synchro zone of the overlapping part, the actions of different control rod groups are consistent, or it can be called "if one moves, all move, and if one does not move, none move."

[0085] Because a power rod group in a reactor may contain more than one power control rod, the second target control rod and multiple power control rods belonging to the power rod group can be first identified. Then, for each control rod in the power rod group, an alternating and stepped approach is used to move each power control rod from the inserted position to the withdrawn position. For example, assuming the power rod groups in the current reactor include the G1 rod group, the G2 rod group, the N1 rod group, and the N2 rod group, each control rod in each power rod group is moved from the inserted position to the withdrawn position using an alternating and stepped approach.

[0086] In this embodiment, the second target control rod and the multiple control rods belonging to the power rod group in each of the remaining control rods are divided into power rod groups. For each control rod in each power rod group, an alternating step-by-step method is used to change each power control rod from the inserted rod position to the withdrawn rod position. This can introduce reactivity while reducing the impact on the axial power distribution shape.

[0087] In one embodiment, obtaining a detector count rate corresponding to when a first target control rod is in the rod insertion position includes: obtaining a first count rate of a source range detector at a current moment and a second count rate at a historical moment; and determining the first count rate as the detector count rate corresponding to the first target control rod when statistical values ​​of the first count rate and the second count rate meet a stability condition.

[0088] Among them, the historical moment refers to a moment that has passed relative to the current moment. The historical moment can refer to the moment before the current moment, or it can refer to multiple moments before the current moment. The second counting rate can refer to the detector counting rate at the previous moment, or it can refer to the average of the detector counting rates at multiple moments before the current moment. The statistical value of the first counting rate and the second counting rate can be, for example, the difference between the first counting rate and the second counting rate. The stable condition means that the statistical values ​​of the first counting rate and the second counting rate have reached a stable value range. For example, when the statistical value is a difference, the stable condition can be that the difference between the first counting rate and the second counting rate is less than a set value.

[0089] To ensure sufficient detector count rate accuracy, it is necessary to ensure that the count rate data detected by the source range detector is stable. The source range detector's first count rate at the current moment and its second count rate at a previous moment are obtained. The statistical value between the first count rate and the second count rate can be determined to be numerically stable. If the statistical value of the first count rate and the second count rate meets the stability condition, the first count rate is determined as the detector count rate corresponding to the first target control rod. In one embodiment, the second count rate refers to the detector count rate at multiple moments. The first count rate can be compared with the detector count rates at the previous moments. If the difference between the first count rate and the detector count rates at the previous moments meets the difference stability value, it indicates that the count rate data detected by the source range detector is stable, and the first count rate at the current moment can be determined as the detector count rate corresponding to the first target control rod. In another embodiment, the second count rate refers to the average of the detector count rates at the previous moments. If the difference between the first count rate and the average of the detector count rates at the previous moments meets the difference stability value, it indicates that the count rate data detected by the source range detector is stable, and the first count rate at the current moment can be determined as the detector count rate corresponding to the first target control rod.

[0090] In this embodiment, statistical analysis is performed on the first count rate at the current moment and the second count rate at the historical moment to ensure that the detector count rate corresponding to the first target control rod is determined when the detector count rate detected by the source range detector is stable, thereby ensuring the accuracy of the control rod value measurement.

[0091] In one embodiment, the initial state also includes: the boron concentration in the reactor core is within a preset range, and the reactor control method further includes: controlling the second target control rod to change from the inserted rod position to the adjusted rod position, and maintaining the first target control rod and the remaining control rods in the withdrawn rod position, wherein the adjusted rod position is a state in which the control rod is partially inserted; performing an adjustment step, the adjustment step including: diluting the boron concentration of the reactor; after the reactor meets a preset stop dilution criterion, controlling the second target control rod to continuously change the rod position from the adjusted rod position to the withdrawn rod position until the reactor reaches a critical state, and stopping changing the rod position of the second target control rod.

[0092] The rod adjustment position is located between the rod insertion position and the rod removal position, for example, step 170. Boron concentration is diluted by introducing water into the reactor's primary circuit. Criticality occurs when the number of new neutrons produced by nuclear fission in the reactor core is just enough to meet the reactor's need for continued fission, and the neutron production rate equals the neutron destruction rate.

[0093] The control rod value measurement process is basically completed. At this time, the control rod state when the control rod value measurement is completed can be used as the initial state of the control rods when the reactor reaches criticality for the first time. At this time, the state of the control rods is: the second target control rod is in the inserted rod position, and the remaining control rods are in the withdrawn rod position. It is only necessary to change the second target control rod from the inserted rod position to the adjusted rod position, keep the first target control rod and the remaining control rods in the withdrawn rod position, and then dilute the boron concentration in the reactor. When the dilution is close to criticality, the reactor meets the preset stop dilution criterion, and control the second target control rod to continuously change the rod position from the adjusted rod position to the withdrawn rod position until the reactor reaches criticality, and stop changing the second target control rod position. In one embodiment, the second target control rod is a temperature control rod. The rod position of the temperature control rod can be changed from the insertion rod position to the adjustment rod position, reducing the value of the temperature control rod inserted into the core. Based on the detector count rate of the source range detector and the difference between the measured boron concentration and the theoretical critical boron concentration, reactivity is introduced in a fast, medium, and slow dilution manner until the stop dilution criterion is met. The stop dilution criterion is generally that the countdown rate reaches 0.1 or the deviation between the measured boron concentration and the theoretical critical boron concentration is less than 30 ppm. The temperature adjustment rod is raised until the core is critical. If criticality cannot be achieved, the temperature adjustment rod is inserted back into the insertion rod position. After introducing an equal amount of reactivity through dilution, the operation of raising the rod to criticality is repeated until the core is critical.

[0094] In this embodiment, the final state of the control rods in the control rod value measurement process is set as the initial state of the reactor's first criticality test. Compared with the prior art in which the initial state of the reactor's first criticality test is that the temperature control rod and the power control rod are both in the inserted rod position, and the remaining control rods are in the extended rod position, the test operation steps are greatly reduced. Only the position of the second target control rod needs to be changed from the inserted rod position to the adjusted rod position, while the prior art needs to change the position of the power control rod from the inserted rod position to the extended rod position, and the position of the temperature control rod from the inserted rod position to the adjusted rod position. In comparison, the method in this embodiment is more efficient.

[0095] In one embodiment, the reactor control method further includes: if the second target control rod has been raised from the adjustment rod position to the raised rod position and the reactor has not yet reached a critical state, controlling the second target control rod to change to the adjustment rod position, and repeating the adjustment step until the reactor reaches a critical state.

[0096] If the second target control rod has been extended from the adjustment rod position to the extension rod position and the reactor has not yet reached criticality, it means that the boron concentration in the reactor is still relatively high. At this time, the second target control rod can be changed to the initial position, that is, the adjustment rod position, and the above adjustment steps can be repeated. That is, the boron concentration in the reactor is diluted again. After the reactor meets the preset stop dilution criteria, the second target control rod is controlled to move from the adjustment rod position to the extension rod position. It is confirmed again whether the reactor has reached criticality during this process. If it has not reached criticality, the above steps are repeated until the reactor reaches criticality.

[0097] In this embodiment, the steps of repeatedly adjusting the rod position of the second target control rod and repeatedly diluting the boron concentration are provided to ensure that the reactor eventually reaches a critical state and that the reactor control process operates normally.

[0098] In one embodiment, the reactor control method further includes: determining lifting and insertion parameters of the control rod that has undergone rod position change; performing statistical analysis on various lifting and insertion parameters of the same control rod to complete a control rod lifting and insertion performance verification test.

[0099] The lifting and insertion parameters are used to determine the lifting and insertion performance of the control rod, and can be response speed or lifting and insertion time. The faster the control rod response speed and the better the lifting and insertion time matches the input, the better the lifting and insertion performance.

[0100] During the control rod value measurement process, the control rod is lifted and inserted. Therefore, the lifting and insertion performance of the control rod can be measured simultaneously with the control rod value. The lifting and insertion parameters of the control rod that has undergone a rod position change can be determined. Statistical analysis of the lifting and insertion parameters of the same control rod can be performed to determine the lifting and insertion performance of the control rod, thus completing the control rod lifting and insertion performance verification test.

[0101] In this embodiment, the control rod value measurement process and the control rod insertion and lifting performance determination process are combined, which can reduce test operations and improve measurement efficiency.

[0102] In one embodiment, a method for measuring control rod values ​​under subcritical conditions during reactor startup is provided, addressing situations where the core state required for subcritical rod insertion is not present during the original startup process of a reactor unit. This method requires obtaining the ARO state and the source range detector count rate for each group of control rods in the fully inserted state while minimizing the impact on operator operations and test time during the original unit startup process.

[0103] The original reactor startup plan specifically refers to the process from the completion of the control rod drop time measurement test to the criticality, which mainly includes the control rod insertion and lifting performance verification test and the first criticality test. The main contents of the control rod insertion and lifting performance verification test of this unit include:

[0104] Initial test conditions: all control rods are in the insertion position; the core boron concentration is between 2300ppm and 2500ppm; the reactor is in hot shutdown.

[0105] Test process:

[0106] According to the random control rod arrangement order, all 9 control rod groups (R, G1, G2, N1, N2, SA, SB, SC, SD) were tested for insertion and withdrawal performance (5 steps - 225 steps - 5 steps - 225 steps). The main contents of the first criticality test of this unit include:

[0107] Initial test status: R, G1, G2, N1, and N2 are in the rod insertion position, that is, 5 withdrawal steps (SA rods of some units are also in the 5 withdrawal step), and the remaining control rods are in the rod withdrawal position, that is, 225 steps; the core boron concentration is between 2300ppm and 2500ppm; the reactor is in hot shutdown state; the primary circuit temperature is stable between 290.4 and 293.4℃, and the pressure is stable between 153 and 155bar.

[0108] Test process:

[0109] The control rods are raised in the order of shutdown rods (including SA, SB, SC and SD rods), power control rods (including G1, G2, N1 and N2 rods), and temperature regulating rods (including R rods). Except for the temperature regulating rod that is partially inserted (for example, inserted to step 170), the remaining control rod groups are fully raised to step 225. Subsequently, the boron concentration and the rod position of the temperature regulating rods are adjusted to make the core critical.

[0110] However, in the embodiment of the present application, the process of measuring the rod value by the subcritical rod scoring method can be combined with the control rod insertion and lifting performance verification test and the first criticality test, so as to minimize the additional operations and time of the subcritical rod scoring test while achieving the target state source range detector count rate measurement. The flow chart of the test process is shown in Figure 3. In one embodiment, in the initial state, that is, the reactor is in a hot shutdown state; the temperature of the first loop is stable between 290.4 and 293.4 ° C, the pressure is stable between 153 and 155 bar, the core boron concentration is between 2300ppm and 2500ppm, and all control rods are in the rod insertion position, that is, in step 5, the SA rod is selected as the first target control rod, the R rod is selected as the second target control rod, and the remaining SB, SC, SD, N2, N1, G2, and G1 rods are all used as remaining control rods. First, in the order of the R, SB, SC, SD, N2, N1, G2, and G1 rod groups, all the second target control rods and the remaining control rod groups are successively raised to the rod raising position, i.e., 225 steps. Among them, the GN rod group is raised in an overlapping manner. After all the control rods except the SA rod are raised, wait for the source range detector count rate to stabilize, and collect data to obtain the source range detector count rate when the SA rod is inserted and the remaining control rods are all raised. After the data collection is completed, the SA rod is raised at the maximum rod speed to 225 raising steps, wait for the source range detector count rate to stabilize, and collect data to obtain the source range detector count rate in the ARO state. After data acquisition is completed, the SB rod is inserted to the 5th step at the maximum rod speed, and the source range detector count rate is waited for to stabilize. Data is collected to obtain the source range detector count rate when the SB rod is inserted and the rest of the control rods are all extended. Repeat the above measurement process to measure the source range detector count rate when the SC, SD, G1, G2, N1, N2, and R rod group are inserted. After completing the measurement of the source range detector count rate when the R rod is inserted to the 5th step, keep the R rod inserted. At this time, the source range detector count rates under different states required for measuring the rod value by the subcritical etching method have been obtained, and the verification of the control rod insertion and extension performance has been completed.

[0111] Since the reactor is in a hot shutdown state at this time, the primary circuit temperature is stable between 290.4 and 293.4°C, the pressure is stable between 153 and 155 bar, the core boron concentration is between 2300 ppm and 2500 ppm, and except for the R rod at step 5, the other control rods are raised to step 225, which meets the initial state for the first criticality test. Therefore, the first criticality test can be started directly at this time.

[0112] The test procedure involves raising the temperature control rod (R rod) to the regulating rod position and lowering the rod's insertion into the core (e.g., raising it to step 170). Subsequently, based on the source range detector countdown rate and the difference between the measured boron concentration and the theoretical critical boron concentration, reactivity is introduced using rapid, moderate, and slow dilutions until the dilution criterion is met. The dilution criterion is generally considered met when the countdown rate reaches 0.1 or the measured boron concentration deviates from the theoretical critical boron concentration by less than 30 ppm. After the dilution criterion is met, the temperature control rod is raised until the core reaches criticality. If criticality is not achieved, the rod is returned to its original position, and the same amount of reactivity is introduced again through dilution. The rod raising procedure is repeated until the core reaches criticality.

[0113] In one embodiment, as shown in FIG4 , the reactor control method includes:

[0114] Step S401, in an initial state, selecting a first target control rod, a second target control rod, and remaining control rods except the first target control rod and the second target control rod from all control rods of the reactor;

[0115] The initial state includes: the reactor is in a hot shutdown state, and all control rods are in the rod insertion position;

[0116] Step S402, determining a second target control rod and a plurality of power control rods belonging to a power rod group among the remaining control rods;

[0117] Step S403: For each power control rod in the same power rod group, each power control rod is changed from an inserted position to an extracted position using an alternating step-by-step method, and a first count rate of the source range detector at the current moment and a second count rate at a historical moment are obtained.

[0118] Step S404, when the statistical values ​​of the first count rate and the second count rate meet a stability condition, determining the first count rate as the detector count rate corresponding to when the first target control rod is in the rod insertion position;

[0119] Step S405: Control the first target control rod to be moved to the withdrawn position, and obtain the full withdrawal count rate of the reactor;

[0120] Step S406, performing the following steps for each remaining control rod: controlling the remaining control rod to change to the rod insertion position, obtaining the detector count rate corresponding to the remaining control rod in the rod insertion position, and controlling the remaining rod to change from the rod insertion position to the rod withdrawal position;

[0121] Step S407, controlling the second target control rod to change to the rod insertion position, and obtaining the detector count rate corresponding to the second target control rod being in the rod insertion position;

[0122] Step S408, performing statistical analysis on the total count rate and the detector count rate corresponding to each control rod to determine the control rod value of the reactor;

[0123] The initial state also includes: the boron concentration in the reactor core is within a preset range;

[0124] Step S409: Control the second target control rod to change from the rod insertion position to the rod adjustment position, and keep the first target control rod and the remaining control rods in the rod extension position.

[0125] Among them, the control rod position is the state where the control rod is partially inserted;

[0126] Step S410: diluting the boron concentration of the reactor; after the reactor meets a preset dilution stop criterion, controlling the second target control rod to continuously change its position from the rod adjustment position to the rod withdrawal position;

[0127] Step S411, determining whether the reactor has reached a critical state;

[0128] Step S412: If the reactor has not reached a critical state, return to step S410;

[0129] Step S413: If the reactor reaches a critical state, stop changing the second target control rod position;

[0130] Step S414: determining the lifting and insertion parameters of the control rod with the rod position changed, performing statistical analysis on the lifting and insertion parameters of the same control rod, and completing the control rod lifting and insertion performance verification test.

[0131] It should be understood that, although the various steps in the flowcharts involved in the various embodiments described above are displayed in sequence according to the instructions of the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and these steps can be executed in other orders. Moreover, at least a portion of the steps in the flowcharts involved in the various embodiments described above can include multiple steps or multiple stages, and these steps or stages are not necessarily executed and completed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a portion of steps or stages in other steps.

[0132] Based on the same inventive concept, embodiments of the present application also provide a reactor control device for implementing the aforementioned reactor control method. The solution provided by this device is similar to the solution described in the aforementioned method. Therefore, the limitations in one or more reactor control device embodiments provided below can be referenced to the limitations in the reactor control method above and are not further elaborated here.

[0133] In one embodiment, as shown in FIG5 , a reactor control device is provided, including: a control rod selection module 502 , a detector count rate determination module 504 , a full-lift count rate determination module 506 , a remaining control rod execution module 508 , and a control rod value determination module 510 , wherein:

[0134] The control rod selection module 502 is configured to select, in an initial state, a first target control rod, a second target control rod, and remaining control rods other than the first target control rod and the second target control rod from all control rods in the reactor. The initial state includes the reactor being in a hot shutdown state and all control rods being in the rod insertion position.

[0135] A detector count rate determination module 504 is configured to control the second target control rod and each of the remaining control rods to change from the rod insertion position to the rod withdrawal position, and to obtain a detector count rate corresponding to when the first target control rod is in the rod insertion position;

[0136] A full withdrawal count rate determination module 506 is configured to control the first target control rod to change to the withdrawn position and obtain the full withdrawal count rate of the reactor;

[0137] The remaining control rod execution module 508 is configured to execute the following steps on the remaining control rods: controlling the remaining control rods to be placed in the rod insertion position, obtaining a detector count rate corresponding to the remaining control rods being placed in the rod insertion position, and controlling the remaining control rods to be placed in the rod withdrawal position from the rod insertion position;

[0138] The detector count rate determination module 504 is further configured to control the second target control rod to change to the rod insertion position and obtain the detector count rate corresponding to the second target control rod being in the rod insertion position.

[0139] The control rod value determination module 510 is used to perform statistical analysis on the total count rate and the detector count rate corresponding to each control rod to determine the control rod value of the reactor.

[0140] In one embodiment, the detector count rate determination module is used to: determine the second target control rod and multiple power control rods belonging to the power rod group among the remaining control rods; and for each power control rod in the same power rod group, use an alternating step-by-step method to change each power control rod from the inserted rod position to the withdrawn rod position.

[0141] In one embodiment, the detector count rate determination module is further configured to: obtain a first count rate of the source range detector at a current moment and a second count rate at a historical moment; and, if statistical values ​​of the first count rate and the second count rate meet a stability condition, determine the first count rate as the detector count rate corresponding to when the first target control rod is in the rod insertion position.

[0142] In one embodiment, the initial state further includes: the boron concentration in the reactor core is within a preset range. In this embodiment, the reactor control device further includes a reactor criticality test module, which is configured to: control the second target control rod to change from the inserted rod position to the adjusted rod position, and maintain the first target control rod and each remaining control rod in the withdrawn rod position, wherein the adjusted rod position is a state in which the control rod is partially inserted; perform an adjustment step, which includes: diluting the boron concentration in the reactor; and, after the reactor meets a preset dilution stop criterion, control the second target control rod to continuously change its rod position from the adjusted rod position to the withdrawn rod position until the reactor reaches criticality, and then stop changing the second target control rod position.

[0143] In one embodiment, the reactor control device further includes an adjustment step repetition execution module, which is used to: if the second target control rod has been raised from the adjustment rod position to the raised rod position and the reactor has not yet reached a critical state, control the second target control rod to change to the adjustment rod position, and repeat the adjustment step until the reactor reaches a critical state.

[0144] In one embodiment, the reactor control device further includes a lifting and insertion performance determination module for determining lifting and insertion parameters of a control rod undergoing a rod position change; performing statistical analysis on various lifting and insertion parameters of the same control rod to complete a control rod lifting and insertion performance verification test.

[0145] In one embodiment, a computer device is provided. The computer device may be a terminal, and its internal structure diagram may be as shown in FIG6 . The computer device includes a processor, memory, a communication interface, a display screen, and an input device connected via a system bus. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and computer program in the non-volatile storage medium. The communication interface of the computer device is used to communicate with an external terminal via wired or wireless communication. The wireless communication may be achieved via Wi-Fi, a mobile cellular network, NFC (near-field communication), or other technologies. When executed by the processor, the computer program implements a reactor control method. The display screen of the computer device may be a liquid crystal display or an electronic ink display. The input device of the computer device may be a touch screen layer covering the display screen, or may be buttons, a trackball, or a touchpad provided on the computer device housing, or may be an external keyboard, touchpad, or mouse.

[0146] Those skilled in the art will understand that the structure shown in FIG6 is merely a block diagram of a portion of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The computer device may include more or fewer components than shown in the figure, or combine certain components, or have a different arrangement of components.

[0147] In one embodiment, a computer device is provided, including a memory and a processor. The memory stores a computer program, and the processor implements the steps of the above method when executing the computer program.

[0148] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps of the above method are implemented.

[0149] In one embodiment, a computer program product is provided, comprising a computer program, which implements the steps of the above method when executed by a processor.

[0150] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties.

[0151] Those skilled in the art will appreciate that all or part of the processes in the above-mentioned embodiment methods can be implemented by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, database or other media used in the embodiments provided in this application may include at least one of non-volatile and volatile memory. Non-volatile memory may include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory may include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in the various embodiments provided herein may include at least one of a relational database and a non-relational database. Non-relational databases may include, but are not limited to, distributed databases based on blockchains. The processor involved in the various embodiments provided herein may be, but are not limited to, a general-purpose processor, a central processing unit, a graphics processing unit, a digital signal processor, a programmable logic unit, a data processing logic unit based on quantum computing, and the like.

[0152] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0153] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be determined by the appended claims.

Claims

1. A reactor control method, characterized in that: The method comprises: In an initial state, a first target control rod, a second target control rod, and remaining control rods other than the first target control rod and the second target control rod are selected from all control rods of the reactor; wherein the initial state includes: the reactor is in a hot shutdown state, and all the control rods are in the rod insertion position; controlling the second target control rod and each of the remaining control rods to change from the rod insertion position to the rod withdrawal position, and obtaining a detector count rate corresponding to when the first target control rod is located at the rod insertion position; controlling the first target control rod to change to a rod withdrawal position, and obtaining a full withdrawal count rate of the reactor; The following steps are performed on each of the remaining control rods: controlling the remaining control rod to change to the rod insertion position, obtaining a detector count rate corresponding to the remaining control rod being in the rod insertion position, and controlling the remaining control rod to change from the rod insertion position to the rod withdrawal position; controlling the second target control rod to change to a rod insertion position, and obtaining a detector count rate corresponding to when the second target control rod is located at the rod insertion position; Statistical analysis is performed on the total count rate and the detector count rate corresponding to each control rod to determine the control rod value of the reactor.

2. The method according to claim 1, characterized in that The controlling the second target control rod and each of the remaining control rods to change from the rod-inserted position to the rod-extracted position includes: determining a plurality of power control rods belonging to a power rod group among the second target control rod and each of the remaining control rods; For each power control rod in the same power rod group, an alternate step-by-step approach is adopted to change each power control rod from an inserted rod position to a pulled-out rod position.

3. The method according to claim 1, characterized in that The acquiring of a detector count rate corresponding to when the first target control rod is located at the rod insertion position includes: Obtaining a first counting rate of the source range detector at a current moment and a second counting rate at a historical moment; When the statistical values of the first count rate and the second count rate meet a stability condition, the first count rate is determined as the detector count rate corresponding to when the first target control rod is located at the rod insertion position.

4. The reactor control method according to claim 1, wherein: The initial state further includes: the boron concentration in the reactor core is within a preset range, and the method further includes: controlling the second target control rod to change from the inserted rod position to the adjusted rod position, and maintaining the first target control rod and each of the remaining control rods in the extended rod position, wherein the adjusted rod position is a state in which the control rod is partially inserted; An adjustment step is performed, the adjustment step comprising: diluting the boron concentration of the reactor; and after the reactor meets a preset dilution stopping criterion, controlling the second target control rod to continuously change its position along the rod adjustment position to the rod withdrawal position until the reactor reaches a critical state, and stopping changing the second target control rod position.

5. The reactor control method according to claim 4, characterized in that: The method further comprises: If the second target control rod has been raised from the adjustment rod position to the rod raised position and the reactor has not yet reached the critical state, the second target control rod is controlled to change to the adjustment rod position, and the adjustment step is repeated until the reactor reaches the critical state.

6. The method according to any one of claims 1 to 5, characterized in that The method further comprises: determining lifting and inserting parameters of the control rod with the rod position changed; Statistical analysis is performed on the lifting and insertion parameters of the same control rod to complete the lifting and insertion performance verification test of the control rod.

7. A reactor control device, characterized in that: The device comprises: a control rod selection module, configured to select, in an initial state, a first target control rod, a second target control rod, and remaining control rods other than the first target control rod and the second target control rod from all control rods of the reactor; wherein the initial state includes: the reactor is in a hot shutdown state, and all the control rods are in the rod insertion position; a detector count rate determination module, configured to control the second target control rod and each of the remaining control rods to change from the rod insertion position to the rod withdrawal position, and obtain a detector count rate corresponding to when the first target control rod is in the rod insertion position; a full withdrawal count rate determination module, configured to control the first target control rod to change to a rod withdrawal position and obtain a full withdrawal count rate of the reactor; a remaining control rod execution module, configured to execute the following steps for each of the remaining control rods: controlling the remaining control rod to change to the rod insertion position, obtaining a detector count rate corresponding to the remaining control rod being in the rod insertion position, and controlling the remaining rod to change from the rod insertion position to the rod withdrawal position; The detector count rate determination module is further configured to control the second target control rod to change to a rod insertion position, and obtain a detector count rate corresponding to when the second target control rod is located at the rod insertion position; The control rod value determination module is used to perform statistical analysis on the total count rate and the detector count rate corresponding to each control rod to determine the control rod value of the reactor.

8. The device according to claim 7, characterized in that The detector count rate determination module is used to: determining a plurality of power control rods belonging to a power rod group among the second target control rod and each of the remaining control rods; For each power control rod in the same power rod group, an alternate step-by-step approach is adopted to change each power control rod from an inserted rod position to a pulled-out rod position.

9. The device according to claim 7, characterized in that The detector count rate determination module is further configured to: Obtaining a first counting rate of the source range detector at a current moment and a second counting rate at a historical moment; When the statistical values of the first count rate and the second count rate meet a stability condition, the first count rate is determined as the detector count rate corresponding to when the first target control rod is located at the rod insertion position.

10. The device according to claim 7, characterized in that The initial state further includes: the boron concentration in the reactor core is within a preset range, and the device further includes a reactor criticality test module for: controlling the second target control rod to change from the inserted rod position to the adjusted rod position, and maintaining the first target control rod and each of the remaining control rods in the extended rod position, wherein the adjusted rod position is a state in which the control rod is partially inserted; An adjustment step is performed, the adjustment step comprising: diluting the boron concentration of the reactor; and after the reactor meets a preset dilution stopping criterion, controlling the second target control rod to continuously change its position along the rod adjustment position to the rod withdrawal position until the reactor reaches a critical state, and stopping changing the second target control rod position.

11. The device according to claim 10, characterized in that The device further includes an adjustment step repeating module, configured to: If the second target control rod has been raised from the adjustment rod position to the rod raised position and the reactor has not yet reached the critical state, the second target control rod is controlled to change to the adjustment rod position, and the adjustment step is repeated until the reactor reaches the critical state.

12. The device according to any one of claims 7 to 11, characterized in that The device further includes a lifting and inserting performance determination module, which is configured to: determining lifting and inserting parameters of the control rod with the rod position changed; Statistical analysis is performed on the lifting and insertion parameters of the same control rod to complete the lifting and insertion performance verification test of the control rod.

13. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 6 are implemented.

14. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

15. A computer program product comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

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