Reactor control method, device, computer equipment and storage medium

Abstract

The present application relates to a reactor control method, device, computer equipment, storage medium and computer program product. The method comprises: selecting a first target control rod, a second target control rod and the remaining control rods from all control rods; controlling the second target control rod and each remaining control rod to change from the rod insertion position to the rod withdrawal position, obtaining the detector count rate of the first target control rod at the rod insertion position, controlling it to change to the rod withdrawal position, obtaining the full withdrawal count rate of the reactor; performing the following steps on each remaining control rod: controlling the remaining control rod to change to the rod insertion position, obtaining the detector count rate of the rod insertion position, controlling it to change from the rod insertion position to the rod withdrawal position; controlling the second target control rod to change to the rod insertion position, obtaining the detector count rate of the rod insertion position; statistically analyzing the full withdrawal count rate and the detector count rate corresponding to each control rod, determining the control rod value of the reactor, and improving the measurement efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of reactor startup physical tests, and in particular to a reactor control method, device, computer equipment, storage medium and computer program product. Background Art

[0002] With the development of the field of reactor startup physical test technology, a reactor control method has emerged that can measure the control rod value 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rod value is determined by the change in the source range detector count rate when the control rod is inserted and withdrawn in the subcritical state.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, thereby improving the economy of the unit.

[0003] 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 other 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 physical test. If a special test window is required to carry out the test during the startup process, it will take up time and reduce the economic efficiency of the method. Summary of the invention

[0004] Based on this, it is necessary to provide a reactor control method, device, computer equipment, computer-readable storage medium and computer program product that can improve experimental efficiency in response to the above technical problems.

[0005] In a first aspect, the present application provides a reactor control method. The method comprises:

[0006] In an initial state, 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 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 a rod insertion position;

[0007] 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;

[0008] controlling the first target control rod to change to a rod withdrawal position, and obtaining a full withdrawal count rate of the reactor;

[0009] The following steps are respectively 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 when the remaining control rod is located at the rod insertion position, and controlling the remaining rod to change from the rod insertion position to the rod withdrawal position;

[0010] controlling the second target control rod to change to a rod insertion position, and acquiring a detector count rate corresponding to when the second target control rod is located at the rod insertion position;

[0011] The total counting rate and the detector counting rate corresponding to each of the control rods are statistically analyzed to determine the control rod value of the reactor.

[0012] In one embodiment, the 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 comprises:

[0013] 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;

[0014] For each power control rod in the same power rod group, an alternately advanced step-by-step method is adopted to change each power control rod from an inserted rod position to a advanced rod position.

[0015] In one embodiment, obtaining the detector count rate corresponding to when the first target control rod is located at the rod insertion position includes:

[0016] Obtaining a first counting rate of the source range detector at a current moment and a second counting rate at a historical moment;

[0017] When the statistical values ​​of the first counting rate and the second counting rate meet a stability condition, the first counting rate is determined as the detector counting rate corresponding to when the first target control rod is located at the rod insertion position.

[0018] In one embodiment, the initial state further includes: the boron concentration in the core of the reactor is within a preset range, and the method further includes:

[0019] controlling the second target control rod to change from the rod insertion position to the rod adjustment position, and maintaining the first target control rod and each of the remaining control rods in the rod withdrawal position, wherein the rod adjustment position is a state in which the control rod is partially inserted;

[0020] An adjustment step is performed, the adjustment step comprising: 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 along the direction of adjusting the rod position to the rod position until the reactor reaches a critical state, and stopping changing the rod position of the second target control rod.

[0021] In one embodiment, the reactor control method further comprises:

[0022] If the second target control rod has been raised from the adjusting rod position to the raised rod position, and the reactor has not yet reached the critical state, the second target control rod is controlled to change to the adjusting rod position, and the adjustment step is repeated until the reactor reaches the critical state.

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

[0024] determining lifting and inserting parameters of the control rod with the rod position changed;

[0025] 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.

[0026] In a second aspect, the present application also provides a reactor control device. The device comprises:

[0027] A control rod selection module is used to select 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 in an initial state; wherein the initial state includes: the reactor is in a hot shutdown state, and all the control rods are in a rod insertion position;

[0028] a detector count rate determination module, used for 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;

[0029] a full withdrawal count rate determination module, used for controlling the first target control rod to change to a withdrawn rod position, and obtaining a full withdrawal count rate of the reactor;

[0030] The remaining control rod execution module is used to respectively execute the following steps for each of the remaining control rods: control the remaining control rods to change to the rod insertion position, obtain the detector count rate corresponding to the remaining control rods when the remaining control rods are located at the rod insertion position, and control the remaining rods to change from the rod insertion position to the rod withdrawal position;

[0031] The detector count rate determination module is further used to control the second target control rod to change to the rod insertion position, and obtain the detector count rate corresponding to when the second target control rod is located at the rod insertion position;

[0032] The control rod value determination module is used to perform statistical analysis on the total counting rate and the detector counting rate corresponding to each control rod to determine the control rod value of the reactor.

[0033] In a third aspect, the present application further provides a computer device, wherein the computer device comprises 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.

[0034] In a fourth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program implements the steps of the above method when executed by a processor.

[0035] In a fifth aspect, the present application further provides a computer program product, wherein the computer program product comprises a computer program, and when the computer program is executed by a processor, the steps of the above method are implemented.

[0036] The above reactor control method, apparatus, computer equipment, storage medium and computer program product 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: 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 corresponding detector count rate when the first target control rod is in the rod insertion position is obtained, so that the detector count rate of the core state in which the first target control rod is inserted and the remaining control rods are fully withdrawn can be obtained, then 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, and the following steps are respectively performed on each remaining control rod: the remaining control rod is controlled to change to the rod insertion position, and the corresponding detector count rate 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. It can be understood that the following steps are performed on each remaining control rod: The step is a repeated process, the purpose of which is to measure the detector count rates of multiple core states when each remaining control rod is in the rod insertion position and the remaining control rods except the measured remaining control rod are in the rod withdrawal position. After the above steps are completed, all control rods in the reactor are in the rod withdrawal position. At this time, the second target control rod is controlled to change to the rod insertion position, and the corresponding detector count rate when the second target control rod is in the rod insertion position is obtained, so that the detector count rates of all core states required for the control rod value measurement can be obtained. Compared with the method of first withdrawing all control rod groups and then inserting and withdrawing the first control rod group, the repeated operation of inserting and withdrawing is omitted. Moreover, at this time, the reactor control rod state is that the second target control rod is in the rod insertion position and the remaining control rods are in the rod withdrawal position, which is just in the initial state of the reactor criticality test, which is convenient for the subsequent process of the reactor criticality test. Finally, the full withdrawal count rate and the detector count rate corresponding to each control rod are statistically analyzed to determine the control rod value of the reactor, which can improve the experimental efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 An application environment diagram of a reactor control method in an embodiment;

[0038] Figure 2 A schematic flow chart of a reactor control method in one embodiment;

[0039] Figure 3 A schematic flow chart of specific steps of reactor control in one embodiment;

[0040] Figure 4 is a schematic flow chart of a reactor control method in another embodiment;

[0041] Figure 5 is a structural block diagram of a reactor control device in one embodiment;

[0042] Figure 6 FIG. 4 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0044] The reactor control method provided in the embodiment of the present application can be applied to Figure 1In the application environment shown. Among them, the terminal 102 communicates with multiple control rods 104 and the source range detector 106 through the network. Among them, the terminal 102 can be but not limited to various personal computers, laptops, smart phones, tablets, Internet of Things devices and portable wearable devices. The Internet of Things devices can 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. Specifically, 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 obtain the full pull-out count rate of the reactor detected by the source range detector 106; perform the following steps on each remaining control rod: control the remaining control rod to change to the rod insertion position, obtain the detector count rate corresponding to the remaining control rod detected by the source range detector 106 when it is in the rod insertion position, and control the remaining rod to change from the rod insertion position to the rod pull-out position; control the second target control rod to change to the rod insertion position, obtain the detector count rate corresponding to the second target control rod detected by the source range detector 106 when it is in the rod insertion position; perform statistical analysis on the full pull-out count rate and the detector count rate corresponding to each control rod, and determine the control rod value of the reactor.

[0045] In one embodiment, Figure 2 As shown, a reactor control method is provided, which is applied to Figure 1 The terminal in is used as an example to illustrate, including the following steps:

[0046] Step S202: In an initial state, 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 are selected from all control rods 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.

[0047] Among them, the reactor, also known as an atomic reactor or a nuclear reactor, is a device that can maintain a controllable self-sustaining chain nuclear fission reaction to achieve nuclear energy utilization. The reactor arranges the nuclear fuel reasonably so that a self-sustaining chain nuclear fission process can occur in it without the need to add a neutron source. Strictly speaking, the term reactor should cover fission reactors, fusion reactors, and fission-fusion hybrid reactors, but generally only refers to fission reactors. Inserting the rod position means that the control rod position is at step 5.

[0048] In order to control the rate of the chain reaction at a predetermined level, absorbing rods made of neutron-absorbing materials are required, which are called control rods. Control rods are used to compensate for fuel consumption and adjust the reaction rate. The absorber materials are generally boron, boron carbide, cadmium, silver indium cadmium, etc. The first target control rod or the second target control rod is a control rod selected from multiple control rods. All control rods can be selected as the first target control rod or the second target control rod. The remaining control rods are control rods other than the first target control rod or the second target control rod. The first target control rod or the second target control rod is different, and the corresponding remaining control rods are also different. When the reactor is not in operation, the control rods are inserted in the core. The control rods are lifted when the reactor is started, and the height of the control rods is adjusted as needed during operation. Once an accident occurs, all control rods will automatically fall down quickly to stop the chain fission reaction in the reactor.

[0049] Hot shutdown is a short-term shutdown. Control rods are inserted into the core to make the reactor subcritical. The boron concentration is greater than the minimum shutdown depth boron concentration, and the reactor is subcritical (<0.99). Subcriticality means that after the first loading of the reactor is completed, all control rods are in the position of being fully inserted into the core, the primary coolant contains a high boron concentration, and almost all neutrons are absorbed. At this time, the neutron generation rate is less than the neutron disappearance rate, and the core is in a subcritical state, and it is deeply subcritical.

[0050] Specifically, the control rod value measurement process can be carried out during the reactor startup process, that is, from the time when the reactor is in a hot shutdown state and all control rods included in the reactor are in the rod insertion position to the process when the reactor reaches criticality. The control rod value is measured in combination with the reactor startup, which can minimize the time required for measurement. Since the control rod value measurement requires the construction of the ARO (all rod out) core state and the core state in which the target control rod is inserted and the remaining control rods are all pulled out, it is necessary to first select a first target control rod and a second target control rod from each control rod when the reactor is in a hot shutdown state and all control rods are in the rod insertion position. Then, the control rods other than the first target control rod and the second target control rod are the remaining control rods, which facilitates the construction of the core state in which the first target control rod is inserted and the remaining control rods are all pulled out. It can be understood that the selection of the first target control rod or the second target control rod is variable. For example, for the temperature control rod R, the power control rods G1, G2, N1 and N2, and the shutdown rods SA, SB, SC and SD, it is possible to first determine that the SA control rod is the first target control rod and the R control rod is the second target control rod, then G1, G2, N1, N2, SB, SC, SD are the remaining control rods; it is also possible to select the R control rod as the first target control rod and the SA control rod as the second target control rod, then G1, G2, N1, N2, SB, SC, SD are the remaining control rods. In a specific embodiment, the first target control rod and the second target control rod may be selected according to the type of the control rods, and the control rods other than the first target control rod and the second target control rod may be defined as the remaining control rods. In another specific embodiment, the first target control rod and the second target control rod may be selected according to the arrangement order of the control rods, and the control rods other than the first target control rod and the second target control rod may be defined as the remaining control rods.

[0051] 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.

[0052] Controlling each remaining control rod to change from a rod insertion position to a rod withdrawal position;

[0053] The proposed rod position refers to the rod position of the control rod being at step 225. The detector count rate refers to the count rate detected by the source range detector reflecting the neutron injection rate level of the reactor core.

[0054] Specifically, 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 change from the rod insertion position to the rod withdrawal position. At this time, the first target control rod is still in the rod insertion position, and the core state in which the first target control rod is inserted and the remaining control rods are all withdrawn can be constructed. For example, in the process of controlling the second target control rod and the remaining control rods to change 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 R, SB, SC, SD, N2, N1, G2, and G1 rods, wherein the N2, N1, G2, and G1 control rods are withdrawn in a step-by-step manner. Furthermore, the process of controlling the second target control rod and the remaining control rods to change from the rod insertion position to the rod withdrawal position can be executed by the terminal, or can be changed manually by a technician. When the first target control rod is kept at the rod insertion position, the core state of the reactor is the core state in which the first target control rod is inserted and the remaining control rods are all pulled out, and the target state is reached. Therefore, the detector count rate corresponding to the first target control rod being at the rod insertion position can be obtained, and the control rod value of the first target control rod can be determined according to the detector count rate. It can be understood that the process of obtaining the detector count rate of the first target control rod can be active acquisition or passive reception.

[0055] Step S206: Control the first target control rod to change to the withdrawn rod position, and obtain the full withdrawal count rate of the reactor.

[0056] 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 rod withdrawal position.

[0057] Specifically, before the first target control rod is changed to the rod withdrawal position, the first target control rod is in the rod insertion position, and the other control rods are in the rod withdrawal position. Then, the ARO core state can be constructed by simply changing the first target control rod to the rod withdrawal position. Therefore, when the first target control rod is changed to the rod withdrawal position, the core of the reactor is in the ARO core state at this time. By obtaining the full withdrawal count rate of the reactor, the detector count rate in the ARO core state can be obtained. It should be noted that there will be multiple ARO states in the process of subcritical rod engraving, and the count rate of one of the states can be selected as needed to participate in the calculation.

[0058] 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 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.

[0059] Specifically, before executing the steps for each remaining control rod, the detector count rates of two core states have been measured: the detector count rate and the full withdrawal count rate when the first target control rod is in the rod-extracting position and the remaining control rods are in the rod-inserting position, and the detector count rate of the reactor in which each remaining control rod is in the rod-extracting position and the second target control rod is in the rod-extracting position is also required to be obtained. Then, for each remaining control rod, it is also necessary to count the detector count rate when the remaining control rod is in the rod-extracting position and the remaining control rods are in the rod-inserting position, that is, it is necessary to control the remaining control rods to change to the rod-inserting position and obtain the detector count rate corresponding to the remaining control rod in the rod-inserting position. Since the steps executed for each remaining detector are the same and each time the detector count rate is obtained, only one control rod is in the rod-inserting position, it is necessary to control the remaining rod to change from the rod-inserting position to the rod-extracting position after obtaining the detector count rate corresponding to the remaining control rod in the rod-inserting position.

[0060] Step S210: Control the second target control rod to change to the rod insertion position, and obtain the detector count rate corresponding to when the second target control rod is located at the rod insertion position.

[0061] 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.

[0062] Specifically, before controlling the second target control rod to be more in the rod insertion position, there is only one core state required for the control rod value measurement process, that is, the second target control rod is in the rod insertion position, and the other control rods are in the core state of the rod withdrawal position. Therefore, the second target control rod can be controlled to be more in the rod insertion position, and the corresponding detector count rate when the second target control rod is in the rod insertion position is obtained, and the detector count rates of all required core states are obtained.

[0063] 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.

[0064] Among them, the control rod value refers to the absolute value of the reactivity change caused by a control rod in the withdrawn position being quickly inserted into 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 where each target control rod is inserted and the remaining control rods are all withdrawn.

[0065] Specifically, by using the correction factor calculated in advance, the count rates detected by the source range detector are corrected, and the control rod value corresponding to each count rate can be determined. After obtaining the detector count rate corresponding to the insertion position of the second target control rod, the total count rate and the detector count rate corresponding to each control rod are corrected based on the correction factor, and the control rod value of the reactor can be determined.

[0066] In the above 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 target control rod and the second target control rod are selected from all control rods of the reactor; wherein 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 the remaining control rods are controlled to change from the rod insertion position to the rod withdrawal position, and the corresponding detector count rate when the first target control rod is in the rod insertion position is obtained, so that the detector count rate of the core state in which the first target control rod is inserted and the remaining control rods are fully withdrawn can be obtained, then 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, and the following steps are respectively performed for each remaining control rod: the remaining control rod is controlled to change to the rod insertion position, the corresponding detector count rate 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. It can be understood that the steps performed on each remaining control rod are a repeated process. The purpose is to measure the detector count rates of multiple core states when each remaining control rod is in the rod insertion position and the remaining control rods except the measured remaining control rod are in the rod withdrawal position. After the above steps are completed, all control rods in the reactor are in the rod withdrawal position. At this time, the second target control rod is controlled to be in the rod insertion position, and the corresponding detector count rate when the second target control rod is in the rod insertion position is obtained, so that the detector count rates of all core states required for the control rod value measurement can be obtained. Compared with the method of first withdrawing all control rod groups and then inserting and withdrawing the first control rod group, the repeated operation of inserting and withdrawing is omitted. Moreover, at this time, the reactor control rod state is that the second target control rod is in the rod insertion position and the remaining control rods are in the rod withdrawal position, which is just in the initial state of the reactor criticality test, which is convenient for the subsequent process of the reactor criticality test. Finally, the full withdrawal count rate and the detector count rate corresponding to each control rod are statistically analyzed to determine the control rod value of the reactor, which can improve the experimental efficiency.

[0067] 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; for each power control rod in the same power rod group, using an alternating step-by-step method to change each power control rod from the rod insertion position to the rod withdrawal position.

[0068] Among them, the synchrotron 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 synchrotron area of ​​the overlapping part, the actions of different control rod groups are consistent, or it is called "if one moves, all move, and if one does not move, none move."

[0069] Specifically, since there may be more than one power control rod in the power rod group in the reactor, the second target control rod and the multiple power control rods belonging to the power rod group among the remaining control rods may be determined first, and then for each control rod in the 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. For example, assuming that the power rod group in the current reactor includes a G1 rod group, a G2 rod group, an N1 rod group, and an N2 rod group, 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.

[0070] In this embodiment, the second target control rod and multiple control rods belonging to the power rod group in each remaining control rod 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, which can reduce the impact on the axial power distribution shape while introducing reactivity.

[0071] In one embodiment, obtaining a detector count rate corresponding to when the first target control rod is located at the rod insertion position includes: obtaining a first count rate of the 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 the statistical values ​​of the first count rate and the second count rate meet a stability condition.

[0072] Among them, the historical moment refers to the 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 the previous moments before the current moment. The second count rate can refer to the detector count rate of the previous moment, or it can refer to the average value of the detector count rate of the previous moments. The statistical value of the first count rate and the second count rate can be, for example, the difference between the first count rate and the second count rate. The stable condition means that the statistical value of the first count rate and the second count rate reaches the range of stable values. For example, when the statistical value is the difference, the stable condition can be that the difference between the first count rate and the second count rate is less than the set value.

[0073] Specifically, in order to ensure that the detector count rate is sufficiently accurate, it is necessary to ensure that the data of the count rate detected by the source range detector has stabilized, obtain the first count rate of the source range detector at the current moment and the second count rate at the historical moment, and make a numerical stability judgment on the statistical value between the first count rate and the second count rate. When the statistical values ​​of the first count rate and the second count rate meet the stability condition, the first count rate is determined as the detector count rate corresponding to the first target control rod. In a specific embodiment, the second count rate refers to the detector count rate of each of the multiple moments, then the first count rate can be compared with the detector count rates of the previous multiple moments respectively, and when the difference between the first count rate and the detector count rates of the previous multiple moments all meet the difference stability value, it means that the data of the count rate detected by the source range detector has stabilized, 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 specific embodiment, the second counting rate refers to the average value of the detector counting rates of the previous multiple moments. When the difference between the first counting rate and the average value of the detector counting rates of the previous multiple moments satisfies the difference stability value, it means that the counting rate data detected by the source range detector has stabilized, and the first counting rate at the current moment can be determined as the detector counting rate corresponding to the first target control rod.

[0074] In this embodiment, statistical analysis is performed on the first counting rate at the current moment and the second counting rate at the historical moment, which can ensure that the detector counting rate corresponding to the first target control rod is determined when the detector counting rate detected by the source range detector is stable, thereby ensuring the accuracy of the control rod value measurement.

[0075] In one embodiment, the initial state also includes: the boron concentration of the reactor core is within a preset range, and the reactor control method also includes: controlling the second target control rod to change from the inserted rod position to the adjusted rod position, and keeping 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.

[0076] The adjusting rod position is a rod position between the inserting rod position and the withdrawing rod position, for example, it can be 170 steps. The boron concentration is diluted by introducing water into the primary loop of the reactor to dilute the boron concentration. The critical state is that the number of new neutrons produced by nuclear fission in the reactor core just meets the need for continued fission of the reactor, and the neutron production rate is equal to the neutron disappearance rate.

[0077] Specifically, 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 rod 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 insertion rod position, and the remaining control rods are in the withdrawal rod position. It is only necessary to change the second target control rod from the insertion rod position to the adjustment rod position, keep the first target control rod and the remaining control rods in the withdrawal rod position, and then dilute the reactor with boron concentration. 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 adjustment rod position to the withdrawal rod position until the reactor reaches the critical state, and stop changing the second target control rod position. In a specific 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 it cannot be critical, 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.

[0078] In the present embodiment, the final state of the control rods in the control rod value measurement process is set as the initial state of the first critical test of the reactor. Compared with the prior art in which the initial state of the first critical test of the reactor is that the rod positions of the temperature control rod and the power control rod are both in the inserted rod position, and the other control rods are in the pulled-out rod position, the steps of the test operation are greatly reduced. It is only necessary to change the rod position of the second target control rod from the inserted rod position to the adjusted rod position, while in the prior art it is necessary to change the rod position of the power control rod from the inserted rod position to the pulled-out rod position, and the rod position of the temperature control rod from the inserted rod position to the adjusted rod position. In comparison, the method in the present embodiment is more efficient.

[0079] In one embodiment, the reactor control method further includes: if the second target control rod has been raised from the adjusting rod position to the raised rod position, and the reactor has not yet reached a critical state, then controlling the second target control rod to change to the adjusting rod position, and repeating the adjustment step until the reactor reaches a critical state.

[0080] Specifically, if the second target control rod has been raised from the adjusting rod position to the withdrawing rod position, and the reactor has not yet reached the critical state, 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 adjusting rod position, and the above adjustment steps are re-executed, that is, the boron concentration in the reactor is re-diluted. After the reactor meets the preset stop dilution criteria, the operation step of controlling the second target control rod to move from the adjusting rod position to the withdrawing rod position is performed, and it is confirmed again whether the reactor has reached the critical state during the process. If it has not reached it, the above steps are repeated again until the reactor reaches the critical state.

[0081] In this embodiment, the steps of repeatedly adjusting the rod position of the second target control rod and repeatedly diluting the boron concentration are set up to ensure that the reactor eventually reaches a critical state and ensure the normal operation of the reactor control process.

[0082] In one embodiment, the reactor control method further includes: determining 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 to complete the lifting and insertion performance verification test of the control rod.

[0083] The lifting and insertion parameter is a parameter used to determine the lifting and insertion performance of the control rod, which can be a response speed or a lifting and insertion time. The faster the response speed of the control rod and the better the lifting and insertion time is consistent with the input, the better the lifting and insertion performance of the control rod.

[0084] Specifically, during the process of measuring the value of the control rod, the control rod will be lifted and inserted, so the lifting and insertion performance of the control rod can be measured while measuring the value of the control rod. The lifting and insertion parameters of the control rod with the rod position change can be determined, and the lifting and insertion parameters of the same control rod can be statistically analyzed to determine the lifting and insertion performance of the control rod, so as to complete the lifting and insertion performance verification test of the control rod.

[0085] In this embodiment, the control rod value measurement process and the control rod lifting and insertion performance determination process are combined, which can reduce test operations and improve measurement efficiency.

[0086] In a specific embodiment, a method for measuring the control rod value under subcriticality during the reactor startup process is provided for the case where the core state required for measuring the control rod value by the subcritical rod engraving method is not available during the original startup process of a certain unit. The method needs to minimize the impact on the operator operation and test time during the original unit startup process while obtaining the ARO state and the source range detector count rate of each group of control rods in the fully inserted state.

[0087] 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 lifting and insertion performance verification test and the first criticality test. The main contents of the control rod lifting and insertion performance verification test of this unit include:

[0088] Initial state of the test: all control rods are in the insertion position; the core boron concentration is between 2300ppm and 2500ppm; the reactor is in hot shutdown state.

[0089] Test process:

[0090] 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 critical test of the unit include:

[0091] The initial state of the test: R, G1, G2, N1, N2 are in the rod insertion position, that is, 5 withdrawal steps (SA rods of some units are also in the 5 withdrawal steps), 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 a hot shutdown state; the primary loop temperature is stable between 290.4 and 293.4℃, and the pressure is stable between 153 and 155bar.

[0092] Test process:

[0093] The control rods are lifted 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 partial insertion of the temperature regulating rods (such as inserted to step 170), the remaining control rod groups are all lifted out to step 225. Subsequently, the boron concentration and the rod position of the temperature regulating rods are adjusted to make the core critical.

[0094] 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 lifting and insertion performance verification test and the first criticality test, so as to achieve the target state source range detector count rate measurement while minimizing the additional operation and time of the subcritical rod scoring test. The flowchart of the test process is as follows: Figure 3Specifically, in one embodiment, in the initial state, that is, the reactor is in a hot shutdown state; the primary loop 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 all control rods are in the rod insertion position, that is, at 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 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, that is, 225 steps, among which the GN rod group is raised in an overlapping manner; after all control rods except the SA rod are raised, wait for the source range detector count rate to stabilize, 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, collect data to obtain the source range detector count rate in the ARO state source range detector count rate; after data acquisition is completed, the SB rod is inserted to the 5th step at the maximum rod speed, wait for the source range detector count rate to stabilize, collect data to obtain the source range detector count rate when the SB rod is inserted and the remaining control rods are all withdrawn; 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 rate under different states required for the subcritical rod engraving method to measure the rod value has been obtained, and the verification of the control rod insertion and withdrawal performance has been completed.

[0095] Since the reactor is in a hot shutdown state at this time, the primary loop temperature is stable between 290.4 and 293.4℃, the pressure is stable between 153 and 155bar, the core boron concentration is between 2300ppm and 2500ppm, and except for the R rod at step 5, the other control rods are raised to step 225, which meets the initial state of the first criticality test. Therefore, the first criticality test can be started directly at this time.

[0096] Specifically, the test process includes: raising the temperature control rod (i.e., R rod) to the regulating rod position, and reducing the value of the temperature regulating rod inserted into the core (such as raising it to step 170). Subsequently, based on the countdown rate of the source range detector and the difference between the measured boron concentration and the theoretical critical boron concentration, the reactivity is introduced in a fast, medium, and slow dilution manner until the stop dilution criterion is met. Generally, when 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, it is considered that the stop dilution criterion is met at this time. After the stop dilution criterion is met, the temperature regulating rod is raised until the core is critical. If it cannot be critical, the temperature regulating rod is inserted back to the initial position, and after introducing an equal amount of reactivity through dilution again, the operation of raising the rod to criticality is repeated until the core is critical.

[0097] In a specific embodiment, Figure 4 As shown, the reactor control method includes:

[0098] 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;

[0099] The initial state includes: the reactor is in a hot shutdown state, and all control rods are in the rod insertion position;

[0100] 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;

[0101] Step S403, for each power control rod in the same power rod group, each power control rod is changed from the insertion position to the withdrawal position by using an alternate withdrawal stepping method, and a first counting rate of the source range detector at the current moment and a second counting rate at the historical moment are obtained;

[0102] Step S404, when the statistical values ​​of the first counting rate and the second counting rate meet the stability condition, the first counting rate is determined as the detector counting rate corresponding to when the first target control rod is located at the rod insertion position;

[0103] Step S405, controlling the first target control rod to change to the rod withdrawal position, and obtaining the full withdrawal count rate of the reactor;

[0104] Step S406, performing the following steps on 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 being in the rod insertion position, and controlling the remaining control rod to change from the rod insertion position to the rod withdrawal position;

[0105] Step S407, controlling the second target control rod to change to the rod insertion position, and obtaining the detector count rate corresponding to when the second target control rod is located at the rod insertion position;

[0106] Step S408, statistically analyzing the total count rate and the detector count rate corresponding to each control rod to determine the control rod value of the reactor;

[0107] The initial state also includes: the boron concentration in the reactor core is within a preset range;

[0108] Step S409, controlling the second target control rod to change from the rod insertion position to the rod adjustment position, and keeping the first target control rod and the remaining control rods in the rod withdrawal position;

[0109] Among them, the control rod position is the state where the control rod is partially inserted;

[0110] Step S410, diluting the boron concentration of the reactor; after the reactor meets the preset stop dilution criterion, controlling the second target control rod to continuously change the rod position to the rod withdrawal position along the direction of adjusting the rod position to the rod withdrawal position;

[0111] Step S411, determining whether the reactor has reached a critical state;

[0112] Step S412: if the reactor has not reached a critical state, return to step S410;

[0113] Step S413, if the reactor reaches a critical state, stop changing the second target control rod position;

[0114] 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 lifting and insertion performance verification test of the control rod.

[0115] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed 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 part of the steps or stages in other steps.

[0116] Based on the same inventive concept, the embodiment of the present application also provides a reactor control device for implementing the reactor control method involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in one or more reactor control device embodiments provided below can refer to the limitations of the reactor control method above, and will not be repeated here.

[0117] In one embodiment, Figure 5 As shown, 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:

[0118] The control rod selection module 502 is used to select 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 in an initial state; wherein the initial state includes: the reactor is in a hot shutdown state, and all control rods are in a rod insertion position;

[0119] The detector count rate determination module 504 is used to control the second target control rod and each remaining control rod 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;

[0120] A full withdrawal count rate determination module 506 is used to control the first target control rod to change to the withdrawn rod position and obtain the full withdrawal count rate of the reactor;

[0121] The remaining control rod execution module 508 is used to respectively execute the following steps on the remaining control rods: control the remaining control rods to change to the rod insertion position, obtain the detector count rate corresponding to the remaining control rods being in the rod insertion position, and control the remaining control rods to change from the rod insertion position to the rod withdrawal position;

[0122] The detector count rate determination module 504 is further used to control the second target control rod to change to the rod insertion position, and obtain the detector count rate corresponding to when the second target control rod is located at the rod insertion position;

[0123] The control rod value determination module 510 is used to perform statistical analysis on the total counting rate and the detector counting rate corresponding to each control rod to determine the control rod value of the reactor.

[0124] In one embodiment, the detector count rate first 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; 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.

[0125] In one embodiment, the detector count rate determination module is further used 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 determine the first count rate as the detector count rate corresponding to the first target control rod when the first target control rod is located at the rod insertion position when the statistical values ​​of the first count rate and the second count rate meet a stability condition.

[0126] In one embodiment, the initial state also includes: the boron concentration of the reactor core is within a preset range. In the case of this embodiment, the reactor control device also includes a reactor criticality test module, which is specifically used to: 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 each remaining control rod in the rod withdrawal position, wherein the rod adjustment position is the state in which the control rod is partially inserted; perform an adjustment step, and the adjustment step includes: diluting the boron concentration of the reactor; after the reactor meets the preset stop dilution criterion, control the second target control rod to continuously change the rod position from the rod adjustment position to the rod withdrawal position until the reactor reaches a critical state, and stop changing the rod position of the second target control rod.

[0127] In one embodiment, the reactor control device also includes an adjustment step repetition execution module, which is specifically 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 the critical state, then control the second target control rod to change to the adjustment rod position, and repeat the adjustment step until the reactor reaches the critical state.

[0128] In one embodiment, the reactor control device also includes a lifting and insertion performance determination module, which is specifically used to: determine the lifting and insertion parameters of the control rod with the rod position changed; perform statistical analysis on the lifting and insertion parameters of the same control rod, and complete the lifting and insertion performance verification test of the control rod.

[0129] In one embodiment, a computer device is provided. The computer device may be a terminal, and its internal structure diagram may be as follows: Figure 6As shown. The computer device includes a processor, a memory, a communication interface, a display screen and an input device connected through a system bus. Among them, 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 an 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 the computer program in the non-volatile storage medium. The communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be achieved through WIFI, a mobile cellular network, NFC (near field communication) or other technologies. When the computer program is executed by the processor, a reactor control method is implemented. The display screen of the computer device can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device can be a touch layer covered on the display screen, or a key, trackball or touchpad set on the computer device shell, or an external keyboard, touchpad or mouse, etc.

[0130] Those skilled in the art will understand that Figure 6 The structure shown in the figure is only a block diagram of a part 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 specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0131] In one embodiment, a computer device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and the processor implements the steps of the above method when executing the computer program.

[0132] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the above method are implemented.

[0133] 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.

[0134] 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.

[0135] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed 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 the memory, database or other medium used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an 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 each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., but are not limited to this.

[0136] The technical features of the above embodiments may 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.

[0137] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached 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 except 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 a 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 respectively performed on each of the remaining control rods: controlling the remaining control rods to change to the rod insertion position, acquiring the detector count rate corresponding to when the remaining control rods are located at the rod insertion position, and controlling the remaining control rods 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 acquiring a detector count rate corresponding to when the second target control rod is located at the rod insertion position; The total counting rate and the detector counting rate corresponding to each of the control rods are statistically analyzed 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 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 of the remaining control rods; For each power control rod in the same power rod group, an alternately advanced step-by-step method is adopted to change each power control rod from an inserted rod position to a advanced rod position.

3. The method according to claim 1, characterized in that The acquiring the 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 counting rate and the second counting rate meet a stability condition, the first counting rate is determined as the detector counting 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, characterized in that: The initial state also includes: the boron concentration in the core of the reactor is within a preset range, and the method further includes: controlling the second target control rod to change from the rod insertion position to the rod adjustment position, and maintaining the first target control rod and each of the remaining control rods in the rod withdrawal position, wherein the rod adjustment 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; after the reactor meets a preset stop dilution criterion, controlling the second target control rod to continuously change the rod position along the direction of adjusting the rod position to the rod position until the reactor reaches a critical state, and stopping changing the rod position of the second target control rod.

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 adjusting rod position to the raised rod position, and the reactor has not yet reached the critical state, the second target control rod is controlled to change to the adjusting 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 is used to select 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 in an initial state; wherein the initial state includes: the reactor is in a hot shutdown state, and all the control rods are in a rod insertion position; a detector count rate determination module, used for 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; a full withdrawal count rate determination module, configured to control the first target control rod to change to a withdrawn rod position, and obtain a full withdrawal count rate of the reactor; The remaining control rod execution module is used to respectively execute the following steps for each of the remaining control rods: control the remaining control rods to change to the rod insertion position, obtain the detector count rate corresponding to the remaining control rods being located at the rod insertion position, and control the remaining control rods to change from the rod insertion position to the rod withdrawal position; The detector count rate determination module is further used to control the second target control rod to change to the rod insertion position, and obtain the 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 counting rate and the detector counting rate corresponding to each control rod to determine the control rod value of the reactor.

8. 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.

9. 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.

10. 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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