Method and device for correcting quadrant power inclination amount of reactor core of reactor
By constructing a target theoretical model and obtaining the initial life power deviation level and average correction parameters, the problem of power tilt in the nuclear reactor core loading scheme is solved, quantitative prediction and intervention are achieved, thereby improving the operational safety of nuclear power plants.
Patent Information
- Application Number
- CN202510665146.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-22
- Publication Date
- 2025-09-05
AI Technical Summary
Existing technologies are unable to accurately and quantitatively determine the quadrant power tilt phenomenon of a nuclear reactor before core startup, making it difficult to obtain a core loading plan that does not cause power tilt.
By constructing a target theoretical model, the initial life power deviation level and average correction parameters are obtained. Based on these parameters, the quadrant power tilt amount of the core loading scheme is corrected to obtain the target loading scheme.
It achieves quantitative prediction and evaluation before the start-up of the reactor core, suppresses and alleviates the quadrant power tilt problem, and improves the operational safety of the nuclear power plant.
Smart Images
Figure CN120600367A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of reactor physics technology, and in particular to a method and device for correcting the power tilt of a reactor core quadrant. Background Art
[0002] After a period of operation, a nuclear reactor may no longer be able to provide sufficient fission nuclides due to fuel consumption. Therefore, it is necessary to shut down the reactor to remove some old assemblies and replace them with new ones. Loading fuel assemblies places high demands on the positioning of the new and old assemblies, and a new loading plan must be determined after carefully considering various issues and conditions.
[0003] Typically, a nuclear reactor core adopts a symmetrical design, and theoretical calculations indicate that the power distribution in each quadrant should be symmetrical. However, due to the combined influence of various uncertainties, the actual power level during actual operation inevitably deviates from the theoretically calculated results, causing quadrant power tilt in the nuclear reactor. Existing technologies cannot accurately and quantitatively determine the core power tilt phenomenon before core startup, making it difficult to accurately determine the core loading plan for a reactor that does not experience power tilt. Summary of the Invention
[0004] Based on this, it is necessary to provide a method and device for correcting the core quadrant power tilt of a reactor, which can accurately obtain the core loading scheme of the reactor without power tilt phenomenon, in order to solve the above technical problems.
[0005] In a first aspect, the present application provides a method for correcting the core quadrant power tilt of a reactor. The method comprises:
[0006] Construct a target theoretical model based on the fuel manufacturing parameters, corrected burnup data, and corrected temperature distribution data corresponding to the reactor;
[0007] Based on the target theoretical model, obtaining an initial life power deviation level corresponding to the reactor core loading scheme;
[0008] determining an average correction parameter corresponding to the reactor's historical cycles;
[0009] According to the initial life power deviation level and the average correction parameter, the core loading plan of the reactor is corrected by a core quadrant power tilt amount to obtain a target loading plan.
[0010] In one embodiment, performing a core quadrant power tilt correction on the core loading plan of the reactor according to the initial life power deviation level and the average correction parameter to obtain a target loading plan includes:
[0011] determining a quadrant power tilt indication value according to the initial life power deviation level and the average correction parameter;
[0012] The core loading plan of the reactor is corrected by a core quadrant power tilt amount according to the quadrant power tilt indication value to obtain a target loading plan.
[0013] In one embodiment, determining the quadrant power tilt indication value according to the initial life power deviation level and the average correction parameter includes:
[0014] determining a target core theoretical power level according to the initial life power deviation level and the average correction parameter;
[0015] A quadrant power tilt indication value is determined according to the target core theoretical power level.
[0016] In one embodiment, the step of correcting the core quadrant power tilt amount of the reactor core loading plan according to the quadrant power tilt indicator value to obtain a target loading plan includes:
[0017] If the quadrant power tilt indication value is less than the tilt threshold, the core loading plan is used as a target loading plan.
[0018] In one embodiment, the step of correcting the core quadrant power tilt amount of the reactor core loading plan according to the quadrant power tilt indicator value to obtain a target loading plan includes:
[0019] If the quadrant power tilt indication value is not less than the tilt threshold value, the core quadrant power tilt amount correction is performed on the core loading plan of the reactor to obtain a target loading plan.
[0020] In one embodiment, determining the average correction parameter corresponding to the reactor historical cycles includes:
[0021] determining, based on the target theoretical model, a power deviation level corresponding to each component in the reactor in a historical cycle;
[0022] An average correction parameter corresponding to the reactor historical cycles is determined according to the power deviation level.
[0023] In one embodiment, determining the power deviation level corresponding to each component in the reactor in the historical cycle based on the target theoretical model includes:
[0024] Based on the target theoretical model, obtaining theoretical power distribution levels and measured power distribution levels corresponding to each component of the reactor in historical cycles;
[0025] The power deviation level corresponding to each component in the reactor in the historical cycle is determined according to the theoretical power distribution level and the measured power distribution level.
[0026] In one embodiment, determining the average correction parameter corresponding to the reactor historical cycles based on the power deviation level includes:
[0027] Data assimilation and / or data inversion are performed on the power deviation level to obtain an average correction parameter of the disturbance affecting the power deviation level.
[0028] In one embodiment, if the reactor has multiple historical cycles, performing data assimilation and / or data inversion on the power deviation level to obtain an average correction parameter of the disturbance affecting the power deviation level includes:
[0029] Performing data assimilation and / or data inversion on the power deviation level to obtain initial correction parameters of disturbances affecting the power deviation level in historical cycles;
[0030] Perform the mean operation on the initial correction parameters in the historical cycle to obtain the average correction parameters.
[0031] In a second aspect, the present application also provides a reactor core quadrant power tilt correction device.
[0032] The device comprises:
[0033] A construction module is used to construct a target theoretical model based on the fuel manufacturing parameters, corrected burnup data, and corrected temperature distribution data corresponding to the reactor;
[0034] an acquisition module for acquiring an initial life power deviation level corresponding to the reactor core loading scheme based on the target theoretical model; a determination module for determining an average correction parameter corresponding to the reactor historical cycle;
[0035] An adjustment module is used to correct the core quadrant power tilt amount of the reactor core loading plan according to the initial life power deviation level and the average correction parameter to obtain a target loading plan.
[0036] In a third aspect, the present application further provides a computer device. The computer device includes a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the following steps are performed:
[0037] Construct a target theoretical model based on the fuel manufacturing parameters, corrected burnup data, and corrected temperature distribution data corresponding to the reactor;
[0038] Based on the target theoretical model, obtaining an initial life power deviation level corresponding to the reactor core loading scheme; determining an average correction parameter corresponding to the reactor historical cycle;
[0039] According to the initial life power deviation level and the average correction parameter, the core loading plan of the reactor is corrected by a core quadrant power tilt amount to obtain a target loading plan.
[0040] In a fourth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the following steps:
[0041] Construct a target theoretical model based on the fuel manufacturing parameters, corrected burnup data, and corrected temperature distribution data corresponding to the reactor;
[0042] Based on the target theoretical model, obtaining an initial life power deviation level corresponding to the reactor core loading scheme; determining an average correction parameter corresponding to the reactor historical cycle;
[0043] According to the initial life power deviation level and the average correction parameter, the core loading plan of the reactor is corrected by a core quadrant power tilt amount to obtain a target loading plan.
[0044] In a fifth aspect, the present application further provides a computer program product. The computer program product includes a computer program that, when executed by a processor, implements the following steps:
[0045] Construct a target theoretical model based on the fuel manufacturing parameters, corrected burnup data, and corrected temperature distribution data corresponding to the reactor;
[0046] Based on the target theoretical model, obtaining an initial life power deviation level corresponding to the reactor core loading scheme; determining an average correction parameter corresponding to the reactor historical cycle;
[0047] According to the initial life power deviation level and the average correction parameter, the core loading plan of the reactor is corrected by a core quadrant power tilt amount to obtain a target loading plan.
[0048] The method and device for correcting the core quadrant power tilt of the above-mentioned reactor construct a target theoretical model according to the fuel manufacturing parameters, corrected fuel consumption data and corrected temperature distribution data corresponding to the reactor, and based on the target theoretical model, obtain the initial life power deviation level corresponding to each component in the reactor in the historical cycle, as well as the average correction parameters corresponding to the reactor historical cycle. Finally, according to the initial life power deviation level and the average correction parameters, the core quadrant power tilt of the reactor core loading plan is corrected to obtain the target loading plan. According to the above content, in the process of determining the reactor loading plan, the present application will pre-construct a target theoretical model based on the fuel manufacturing parameters, corrected fuel consumption data and corrected temperature distribution data corresponding to the reactor, so as to eliminate the deviation introduced by the manufacturing error and obtain a target theoretical model that is more in line with the actual operation of the reactor, providing a data basis for the subsequent smooth determination of the target loading plan; and, by determining the initial life power deviation level and the average correction parameters, the present application realizes the estimation of the quadrant power tilt problem that may occur after the core loading plan is started, and realizes quantitative prediction, evaluation and intervention before the reactor unit core is started, so as to suppress and alleviate the possible quadrant power tilt problem from the source, improve the unit operation status, and enhance the safety of nuclear power plant operation. BRIEF DESCRIPTION OF THE DRAWINGS
[0049] Figure 1 A diagram illustrating an application environment of a method for determining a loading plan provided in an embodiment of the present application;
[0050] Figure 2 A schematic flow chart of a first loading scheme determination method provided in an embodiment of the present application;
[0051] Figure 3 A schematic flow chart of a second method for determining a loading plan provided in an embodiment of the present application;
[0052] Figure 4 A schematic flow chart of a third method for determining a loading plan provided in an embodiment of the present application;
[0053] Figure 5 A schematic flow chart of a fourth method for determining a loading scheme provided in an embodiment of the present application;
[0054] Figure 6 A structural block diagram of a loading plan determination device provided in an embodiment of the present application;
[0055] Figure 7 FIG. 1 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION
[0056] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.
[0057] The reactor core quadrant power tilt correction method provided in the embodiment of the present application can be applied to Figure 1 In the application environment shown, terminal 102 communicates with server 104 via a network. A data storage system can store data that server 104 needs to process. The data storage system can be integrated with server 104, or placed on a cloud or other network server. A target theoretical model is constructed based on the reactor's corresponding fuel manufacturing parameters, corrected burnup data, and corrected temperature distribution data. Based on the target theoretical model, the corresponding initial life power deviation levels of each component in the reactor in historical cycles and the average correction parameters corresponding to the reactor's historical cycles are obtained. Finally, based on the initial life power deviation levels and the average correction parameters, the core quadrant power tilt amount of the reactor core loading plan is corrected to obtain the target loading plan. Terminal 102 can be, but is not limited to, various personal computers, laptops, smartphones, tablets, IoT devices, and portable wearable devices. IoT devices can include smart speakers, smart TVs, smart air conditioners, smart car devices, etc. Portable wearable devices can include smart watches, smart bracelets, head-mounted devices, etc. Server 104 can be implemented as a standalone server or a server cluster consisting of multiple servers.
[0058] In one embodiment, Figure 2 As shown, a method for correcting the core quadrant power tilt of a reactor is provided, and the method is applied to Figure 1 Taking the server 104 in the example as an example, the following steps are included:
[0059] S201: Construct a target theoretical model based on the fuel manufacturing parameters, corrected burnup data, and corrected temperature distribution data corresponding to the reactor.
[0060] It should be noted that in order to improve the model accuracy of the target theoretical model and make the construction of the target theoretical model consistent with the actual operation of the reactor, it is necessary to ensure that the fuel manufacturing parameters, corrected fuel consumption data and corrected temperature distribution data corresponding to the reactor have high data accuracy, so as to eliminate the deviation introduced by manufacturing errors.
[0061] In one embodiment of the present application, when it is necessary to obtain fuel manufacturing parameters, actual manufacturing parameters of the reactor can be collected to obtain the fuel manufacturing parameters; wherein the fuel manufacturing parameters may include but are not limited to: enrichment and material parameters of the fuel assembly.
[0062] In one embodiment of the present application, when it is necessary to obtain corrected fuel consumption data, the actual measured power level corresponding to the reactor in at least one historical cycle can be obtained in advance, and then the initial fuel consumption data collected by the reactor can be corrected according to the actual measured power level to obtain corrected fuel consumption data.
[0063] Specifically, for a target unit, regular flux map experiments are conducted to obtain the actual measured power level of the reactor over at least one historical cycle. This actual measured power level differs somewhat from the theoretically calculated power level. Since burnup is proportional to power, using the actual measured power level over at least one historical cycle to correct the burnup data allows for more accurate component burnup at the end of life.
[0064] In one embodiment of the present application, when it is necessary to determine the corrected temperature distribution data, the average temperature conditions at the locations of each component of the entire stack can be corrected based on the thermocouple measurement data during the operation of each unit of the reactor, thereby obtaining the corrected temperature distribution data.
[0065] Specifically, assuming that the inlet temperature remains unchanged, the thermocouple gives the outlet temperature at each component position in the core; and, for the component positions where the thermocouples are arranged, the temperature distribution parameters are corrected by the outlet temperature and the inlet temperature to obtain corrected temperature distribution data; for the component positions where no thermocouples are arranged, the outlet temperature is fitted by various data fitting methods (such as spline curve fitting method) to correct the temperature distribution parameters in the theoretical model.
[0066] It is further explained that an initial theoretical model for the reactor can be constructed in advance. After obtaining the fuel manufacturing parameters, corrected fuel consumption data and corrected temperature distribution data corresponding to the reactor, the initial theoretical model is corrected according to the fuel manufacturing parameters, corrected fuel consumption data and corrected temperature distribution data corresponding to the reactor to obtain the target theoretical model.
[0067] S202: Based on the target theoretical model, obtain the initial life power deviation level corresponding to the reactor core loading scheme.
[0068] In one embodiment of the present application, a reactor core loading scheme may be simulated and calculated according to a target theoretical model, thereby obtaining an initial life power deviation level corresponding to the reactor core loading scheme.
[0069] S203, determining an average correction parameter corresponding to the reactor's historical cycles.
[0070] It should be noted that when it is necessary to determine the average correction parameters corresponding to the historical cycles of the reactor, the following may be included: based on the target theoretical model, determine the power deviation level corresponding to each component in the reactor in the historical cycle; then, based on the power deviation level, determine the average correction parameters corresponding to the historical cycles of the reactor.
[0071] S204 , performing core quadrant power tilt correction on the core loading plan of the reactor according to the initial life power deviation level and the average correction parameter to obtain a target loading plan.
[0072] It should be noted that to ensure accurate deviation assessment of the reactor core loading plan, the quadrant power tilt indicator value can be determined based on the initial life power deviation level and the average correction parameter. Then, the core quadrant power tilt amount of the reactor core loading plan is corrected based on the quadrant power tilt indicator value to obtain the target loading plan.
[0073] The above-mentioned method for correcting the core quadrant power tilt of the reactor constructs a target theoretical model according to the fuel manufacturing parameters, corrected fuel consumption data and corrected temperature distribution data corresponding to the reactor, and based on the target theoretical model, obtains the initial life power deviation level corresponding to each component in the reactor in the historical cycle, as well as the average correction parameters corresponding to the reactor historical cycle. Finally, according to the initial life power deviation level and the average correction parameters, the core quadrant power tilt of the reactor core loading plan is corrected to obtain the target loading plan. According to the above content, in the process of determining the reactor loading plan, the present application will pre-construct a target theoretical model based on the fuel manufacturing parameters, corrected fuel consumption data and corrected temperature distribution data corresponding to the reactor, so as to eliminate the deviation introduced by the manufacturing error and obtain a target theoretical model that is more in line with the actual operation of the reactor, providing a data basis for the subsequent smooth determination of the target loading plan; and, by determining the initial life power deviation level and the average correction parameters, the present application realizes the estimation of the quadrant power tilt problem that may occur after the core loading plan is started, and realizes quantitative prediction, evaluation and intervention before the reactor unit core is started, so as to suppress and alleviate the possible quadrant power tilt problem from the source, improve the unit operation status, and enhance the safety of nuclear power plant operation.
[0074] In one embodiment, if Figure 3 As shown in FIG, when it is necessary to correct the core quadrant power tilt of the reactor core loading plan according to the initial life power deviation level and the average correction parameter to obtain the target loading plan, the following contents may be specifically included:
[0075] S301, determining a quadrant power tilt indication value according to an initial life power deviation level and an average correction parameter.
[0076] It should be noted that when it is necessary to determine the quadrant power tilt indication value, the following contents may be included: determining the target core theoretical power level based on the initial life power deviation level and the average correction parameter; determining the quadrant power tilt indication value based on the target core theoretical power level.
[0077] In one embodiment of the present application, when it is necessary to determine the target core theoretical power level, the error correction of the initial life power deviation level can be performed using the average correction parameter to obtain the target core theoretical power level.
[0078] Among them, the calculation formula for the target core theoretical power level can be expressed as: Pn+1(i)+Δ(i); Pn+1(i) is the power deviation level at the beginning of the life cycle; Δ(i) is the power level change; and the power level change is related to the average correction parameter, which can be changed by adjusting the average correction parameter.
[0079] S302 , performing core quadrant power tilt correction on the core loading plan of the reactor according to the quadrant power tilt indication value to obtain a target loading plan.
[0080] It should be noted that when it is necessary to correct the core quadrant power tilt amount of the reactor core loading plan according to the quadrant power tilt indication value to obtain the target loading plan, the size relationship between the quadrant power tilt indication value and the preset tilt threshold can be verified, and then, based on the size relationship, the core quadrant power tilt amount of the reactor core loading plan can be corrected to obtain the target loading plan.
[0081] The tilt threshold may be selected based on the operating experience of the reactor unit. As an example, typical values of the tilt threshold are 1.003, 1.005, 1.008, and 1.010.
[0082] In one embodiment of the present application, if the quadrant power tilt indicator value is less than the tilt threshold, the core loading plan is used as the target loading plan. Specifically, because the quadrant power tilt indicator value is less than the tilt threshold, it can be determined that the tilt state of the core loading plan at this time is relatively good, and therefore, the core loading plan is used as the target loading plan.
[0083] In another embodiment of the present application, if the quadrant power tilt indicator value is not less than the tilt threshold, the core quadrant power tilt amount is corrected for the reactor core loading plan to obtain a target loading plan. Specifically, if the quadrant power tilt indicator value is not less than the tilt threshold, it indicates that the tilt state of the core loading plan is relatively poor, and the core loading plan needs to be adjusted to reduce the quadrant power tilt indicator value, thereby obtaining the target loading plan.
[0084] The above-mentioned method for correcting the core quadrant power tilt of the reactor determines the quadrant power tilt indication value, and corrects the core quadrant power tilt of the reactor core loading plan according to the quadrant power tilt indication value to obtain a target loading plan, thereby realizing early quantitative prediction and targeted suppression of quadrant power tilt, alleviating the quadrant power tilt problem during unit operation, and accurately obtaining the core loading plan of the reactor without power tilt phenomenon.
[0085] In one embodiment, if Figure 4 As shown, when it is necessary to determine the average correction parameters corresponding to the reactor historical cycles, the following may be specifically included:
[0086] S401, based on the target theoretical model, determining the power deviation level corresponding to each component in the reactor in the historical cycle.
[0087] It should be noted that when it is necessary to determine the power deviation level corresponding to each component in the reactor in the historical cycle, the following contents may be included: based on the target theoretical model, the theoretical power distribution level and the measured power distribution level corresponding to each component in the reactor in the historical cycle are obtained; based on the theoretical power distribution level and the measured power distribution level, the power deviation level corresponding to each component in the reactor in the historical cycle is determined.
[0088] It is further explained that when determining the power deviation levels corresponding to each component in the reactor in the historical cycles based on the theoretical power distribution level and the measured power distribution level, a difference operation can be performed on the theoretical power distribution level and the measured power distribution level, and the difference operation result obtained is the power deviation level corresponding to each component in the reactor in the historical cycles.
[0089] In one embodiment of the present application, the theoretical power distribution level corresponding to each unit in the reactor is calculated based on the target theoretical model, which is denoted as: Pa1(i), Pa2(i), Pa3(i), ..., Pan(i); flux diagram measurements are carried out at the beginning of the life of each unit of the reactor after it is started up to obtain the measured power distribution level, which is denoted as: P1(i), P2(i), P3(i), ..., Pn(i); wherein 1 to n refer to different historical cycles; i refers to the serial number of each component of the core, with typical values of 1 to 157 (CPR1000 and AP1000 units), 1 to 177 (Hualong units), 1 to 241 (EPR units), and 1 to 163 (VVER units).
[0090] S402: Determine an average correction parameter corresponding to the reactor's historical cycles according to the power deviation level.
[0091] It should be noted that when it is necessary to determine the average correction parameters corresponding to the historical cycles of the reactor based on the power deviation level, the following contents may be included: performing data assimilation and / or data inversion on the power deviation level to obtain the average correction parameters of the disturbance affecting the power deviation level.
[0092] Specifically, if the reactor has multiple historical cycles, in the process of performing data assimilation and / or data inversion on the power deviation level to obtain the average correction parameter of the disturbance affecting the power deviation level, data assimilation and / or data inversion can be performed on the power deviation level to obtain the initial correction parameter of the disturbance affecting the power deviation level in the historical cycle; and the average operation is performed on the initial correction parameters in the historical cycle to obtain the average correction parameter.
[0093] To further illustrate, during data assimilation and / or data inversion of the power deviation level, the correction parameters can be adjusted. During the adjustment process, it is determined whether the power deviation level is less than or equal to a preset value. If so, the adjusted correction parameters are used as the initial correction parameters for the disturbance affecting the power deviation level in the historical cycle.
[0094] The correction parameter is a parameter that can be used to influence the power deviation level, and there are many data types of the correction parameter. As an example, the data type of the initial correction parameter can be water gap data.
[0095] In one embodiment of the present application, the initial correction parameter can characterize the change in the power deviation level, and the data type of the initial correction parameter can be water gap data, that is; by adjusting the water gap data, the power deviation level is less than or equal to a preset value (the preset value can be set or adjusted according to actual conditions. As an example, the preset value can be set to zero); if the adjusted water gap data can make the power deviation level less than or equal to the preset value, the adjusted water gap data will be used as the initial correction parameter.
[0096] The above-mentioned method for correcting the core quadrant power tilt of the reactor determines the power deviation level corresponding to each component in the reactor in the historical cycle, and determines the average correction parameters corresponding to the reactor historical cycle based on the power deviation level, thereby realizing quantitative prediction, evaluation and intervention before the reactor unit core is started, thereby suppressing and alleviating possible quadrant power tilt problems from the source, improving the operating status of the unit, and enhancing the safety of nuclear power plant operation.
[0097] In one embodiment, if Figure 5 As shown, when it is necessary to correct the core quadrant power tilt amount of the reactor core loading plan to obtain the target loading plan, the following contents may be included:
[0098] S501: Construct a target theoretical model based on the fuel manufacturing parameters, corrected burnup data, and corrected temperature distribution data corresponding to the reactor.
[0099] S502: Based on the target theoretical model, obtain the initial life power deviation level corresponding to the reactor core loading scheme.
[0100] S503 , based on the target theoretical model, obtaining theoretical power distribution levels and measured power distribution levels corresponding to each reactor component in the historical cycle.
[0101] S504: Determine the power deviation level corresponding to each component in the reactor in the historical cycle according to the theoretical power distribution level and the measured power distribution level.
[0102] S505 , performing data assimilation and / or data inversion on the power deviation level to obtain initial correction parameters of disturbances affecting the power deviation level in historical cycles.
[0103] S506: Perform a mean operation on the initial correction parameters in the historical cycle to obtain an average correction parameter.
[0104] S507: Determine the target core theoretical power level based on the initial life cycle power deviation level and the average correction parameter.
[0105] S508: Determine a quadrant power tilt indication value according to the target core theoretical power level.
[0106] S509 , performing core quadrant power tilt amount correction on the core loading plan of the reactor according to the quadrant power tilt indication value to obtain a target loading plan.
[0107] The above-mentioned method for correcting the core quadrant power tilt of the reactor constructs a target theoretical model according to the fuel manufacturing parameters, corrected fuel consumption data and corrected temperature distribution data corresponding to the reactor, and based on the target theoretical model, obtains the initial life power deviation level corresponding to each component in the reactor in the historical cycle, as well as the average correction parameters corresponding to the reactor historical cycle. Finally, according to the initial life power deviation level and the average correction parameters, the core quadrant power tilt of the reactor core loading plan is corrected to obtain the target loading plan. According to the above content, in the process of determining the reactor loading plan, the present application will pre-construct a target theoretical model based on the fuel manufacturing parameters, corrected fuel consumption data and corrected temperature distribution data corresponding to the reactor, so as to eliminate the deviation introduced by the manufacturing error and obtain a target theoretical model that is more in line with the actual operation of the reactor, providing a data basis for the subsequent smooth determination of the target loading plan; and, by determining the initial life power deviation level and the average correction parameters, the present application realizes the estimation of the quadrant power tilt problem that may occur after the core loading plan is started, and realizes quantitative prediction, evaluation and intervention before the reactor unit core is started, so as to suppress and alleviate the possible quadrant power tilt problem from the source, improve the unit operation status, and enhance the safety of nuclear power plant operation.
[0108] It should be understood that, although the steps in the flowcharts of the above embodiments are shown in sequence as indicated by the arrows, these steps are not necessarily performed 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 performed in other orders. Moreover, at least a portion of the steps in the flowcharts of the above embodiments may include multiple steps or multiple stages, and these steps or stages are not necessarily performed at the same time, but can be performed at different times. The execution order of these steps or stages is not necessarily to be performed in sequence, but can be performed in turn or alternately with other steps or at least a portion of steps or stages in other steps.
[0109] Based on the same inventive concept, embodiments of the present application also provide a reactor core quadrant power tilt correction device for implementing the aforementioned reactor core quadrant power tilt correction method. The solution provided by this device is similar to the solution described in the aforementioned method. Therefore, the specific limitations of the embodiments of the reactor core quadrant power tilt correction device provided below can be found in the aforementioned limitations of the reactor core quadrant power tilt correction method and will not be further elaborated here.
[0110] In one embodiment, Figure 6As shown, a reactor core quadrant power tilt correction device is provided, comprising: a construction module 10, an acquisition module 20, a determination module 30 and an adjustment module 40, wherein:
[0111] The construction module 10 is used to construct a target theoretical model according to the fuel manufacturing parameters, corrected burnup data and corrected temperature distribution data corresponding to the reactor.
[0112] The acquisition module 20 is used to acquire the initial life power deviation level corresponding to the reactor core loading scheme based on the target theoretical model.
[0113] The determination module 30 is used to determine the average correction parameter corresponding to the historical cycle of the reactor.
[0114] The adjustment module 40 is used to correct the core quadrant power tilt amount of the reactor core loading plan according to the initial life power deviation level and the average correction parameter to obtain a target loading plan.
[0115] In one embodiment, a quadrant power tilt indicator value is determined based on the beginning-of-life power deviation level and the average correction parameter;
[0116] The core loading plan of the reactor is corrected by the core quadrant power tilt amount according to the quadrant power tilt indication value to obtain the target loading plan.
[0117] In one embodiment, a target core theoretical power level is determined based on the initial life power deviation level and the average correction parameter;
[0118] The quadrant power tilt indication value is determined based on the target core theoretical power level.
[0119] In one embodiment, if the quadrant power tilt indicator value is less than the tilt threshold, the core loading plan is used as the target loading plan.
[0120] In one embodiment, if the quadrant power tilt indication value is not less than the tilt threshold value, the core quadrant power tilt amount is corrected for the core loading plan of the reactor to obtain a target loading plan.
[0121] In one embodiment, based on the target theoretical model, the power deviation level corresponding to each component in the reactor in the historical cycle is determined;
[0122] According to the power deviation level, the average correction parameters corresponding to the reactor history cycle are determined.
[0123] In one embodiment, based on the target theoretical model, the theoretical power distribution level and the measured power distribution level corresponding to each component of the reactor in the historical cycle are obtained;
[0124] Based on the theoretical power distribution level and the measured power distribution level, the power deviation level corresponding to each component in the reactor in the historical cycle is determined.
[0125] In one embodiment, data assimilation and / or data inversion are performed on the power deviation level to obtain an average correction parameter of the disturbance affecting the power deviation level.
[0126] In one embodiment, data assimilation and / or data inversion are performed on the power deviation level to obtain initial correction parameters of disturbances affecting the power deviation level in historical cycles;
[0127] Perform the mean operation on the initial correction parameters in the historical cycle to obtain the average correction parameters.
[0128] The core quadrant power tilt correction device of the above-mentioned reactor constructs a target theoretical model according to the fuel manufacturing parameters, corrected fuel consumption data and corrected temperature distribution data corresponding to the reactor, and based on the target theoretical model, obtains the initial life power deviation level corresponding to each component in the reactor in the historical cycle, as well as the average correction parameters corresponding to the reactor historical cycle. Finally, according to the initial life power deviation level and the average correction parameters, the core quadrant power tilt correction is performed on the core loading plan of the reactor to obtain the target loading plan. According to the above content, in the process of determining the reactor loading plan, the present application will pre-construct a target theoretical model based on the fuel manufacturing parameters, corrected fuel consumption data and corrected temperature distribution data corresponding to the reactor, so as to eliminate the deviation introduced by the manufacturing error and obtain a target theoretical model that is more in line with the actual operation of the reactor, providing a data basis for the subsequent smooth determination of the target loading plan; and, by determining the initial life power deviation level and the average correction parameters, the present application realizes the estimation of the quadrant power tilt problem that may occur after the core loading plan is started, and realizes quantitative prediction, evaluation and intervention before the reactor unit core is started, so as to suppress and alleviate the possible quadrant power tilt problem from the source, improve the unit operation status, and enhance the safety of nuclear power plant operation.
[0129] Each module in the aforementioned reactor core quadrant power tilt correction device can be implemented in whole or in part via software, hardware, or a combination thereof. Each module can be embedded in or independent of a processor within a computer device in the form of hardware, or can be stored in a computer device memory in the form of software, allowing the processor to call and execute the corresponding operations of each module.
[0130] 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 7As shown. The computer device includes a processor, a memory, an input / output interface, a communication interface, a display unit and an input device. The processor, the memory and the input / output interface are connected via a system bus, and the communication interface, the display unit and the input device are connected to the system bus via the input / output interface. 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 input / output interface of the computer device is used to exchange information between the processor and an external device. 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 method for correcting the core quadrant power tilt of a reactor is implemented. The display unit of the computer device is used to form a visually visible image, which can be a display screen, a projection device or a virtual reality imaging device. The display screen 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 covering the display screen, or a button, trackball or touchpad set on the computer device casing, or an external keyboard, touchpad or mouse.
[0131] Those skilled in the art will understand that Figure 7 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 shown in the figure, or combine certain components, or have a different component arrangement.
[0132] In one embodiment, a computer device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the computer program, the following steps are implemented:
[0133] Construct a target theoretical model based on the fuel manufacturing parameters, corrected burnup data, and corrected temperature distribution data corresponding to the reactor;
[0134] Based on the target theoretical model, the initial life power deviation level corresponding to the reactor core loading scheme is obtained;
[0135] Determine average correction parameters corresponding to historical reactor cycles;
[0136] According to the initial life power deviation level and the average correction parameter, the core loading plan of the reactor is corrected by the core quadrant power tilt to obtain the target loading plan.
[0137] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:
[0138] Determine the quadrant power tilt indication value based on the initial life power deviation level and the average correction parameter;
[0139] The core loading plan of the reactor is corrected by the core quadrant power tilt amount according to the quadrant power tilt indication value to obtain the target loading plan.
[0140] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:
[0141] Determine the target core theoretical power level based on the initial life cycle power deviation level and average correction parameters;
[0142] The quadrant power tilt indication value is determined based on the target core theoretical power level.
[0143] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:
[0144] If the quadrant power tilt indication value is less than the tilt threshold, the core loading scheme is used as the target loading scheme.
[0145] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:
[0146] If the quadrant power tilt indication value is not less than the tilt threshold, the core quadrant power tilt amount correction is performed on the core loading plan of the reactor to obtain a target loading plan.
[0147] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:
[0148] Based on the target theoretical model, determine the power deviation level corresponding to each component in the reactor in the historical cycle;
[0149] According to the power deviation level, the average correction parameters corresponding to the reactor history cycle are determined.
[0150] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:
[0151] Based on the target theoretical model, the theoretical power distribution level and the measured power distribution level corresponding to each reactor component in the historical cycle are obtained;
[0152] Based on the theoretical power distribution level and the measured power distribution level, the power deviation level corresponding to each component in the reactor in the historical cycle is determined.
[0153] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:
[0154] Data assimilation and / or data inversion are performed on the power deviation level to obtain an average correction parameter of the disturbance affecting the power deviation level.
[0155] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:
[0156] Performing data assimilation and / or data inversion on the power deviation level to obtain initial correction parameters for disturbances affecting the power deviation level in historical cycles;
[0157] Perform the mean operation on the initial correction parameters in the historical cycle to obtain the average correction parameters.
[0158] 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 following steps are implemented:
[0159] Construct a target theoretical model based on the fuel manufacturing parameters, corrected burnup data, and corrected temperature distribution data corresponding to the reactor;
[0160] Based on the target theoretical model, the initial life power deviation level corresponding to the reactor core loading scheme is obtained;
[0161] Determine average correction parameters corresponding to historical reactor cycles;
[0162] According to the initial life power deviation level and the average correction parameter, the core loading plan of the reactor is corrected by the core quadrant power tilt to obtain the target loading plan.
[0163] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:
[0164] Determine the quadrant power tilt indication value based on the initial life power deviation level and the average correction parameter;
[0165] The core loading plan of the reactor is corrected by the core quadrant power tilt amount according to the quadrant power tilt indication value to obtain the target loading plan.
[0166] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:
[0167] Determine the target core theoretical power level based on the initial life cycle power deviation level and average correction parameters;
[0168] The quadrant power tilt indication value is determined based on the target core theoretical power level.
[0169] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:
[0170] If the quadrant power tilt indication value is less than the tilt threshold, the core loading scheme is used as the target loading scheme.
[0171] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:
[0172] If the quadrant power tilt indication value is not less than the tilt threshold, the core quadrant power tilt amount correction is performed on the core loading plan of the reactor to obtain a target loading plan.
[0173] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:
[0174] Based on the target theoretical model, determine the power deviation level corresponding to each component in the reactor in the historical cycle;
[0175] According to the power deviation level, the average correction parameters corresponding to the reactor history cycle are determined.
[0176] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:
[0177] Based on the target theoretical model, the theoretical power distribution level and the measured power distribution level corresponding to each reactor component in the historical cycle are obtained;
[0178] Based on the theoretical power distribution level and the measured power distribution level, the power deviation level corresponding to each component in the reactor in the historical cycle is determined.
[0179] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:
[0180] Data assimilation and / or data inversion are performed on the power deviation level to obtain an average correction parameter of the disturbance affecting the power deviation level.
[0181] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:
[0182] Performing data assimilation and / or data inversion on the power deviation level to obtain initial correction parameters for disturbances affecting the power deviation level in historical cycles;
[0183] Perform the mean operation on the initial correction parameters in the historical cycle to obtain the average correction parameters.
[0184] In one embodiment, a computer program product is provided, comprising a computer program, which, when executed by a processor, implements the following steps:
[0185] Construct a target theoretical model based on the fuel manufacturing parameters, corrected burnup data, and corrected temperature distribution data corresponding to the reactor;
[0186] Based on the target theoretical model, the initial life power deviation level corresponding to the reactor core loading scheme is obtained;
[0187] Determine average correction parameters corresponding to historical reactor cycles;
[0188] According to the initial life power deviation level and the average correction parameter, the core loading plan of the reactor is corrected by the core quadrant power tilt to obtain the target loading plan.
[0189] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:
[0190] Determine the quadrant power tilt indication value based on the initial life power deviation level and the average correction parameter;
[0191] The core loading plan of the reactor is corrected by the core quadrant power tilt amount according to the quadrant power tilt indication value to obtain the target loading plan.
[0192] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:
[0193] Determine the target core theoretical power level based on the initial life cycle power deviation level and average correction parameters;
[0194] The quadrant power tilt indication value is determined based on the target core theoretical power level.
[0195] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:
[0196] If the quadrant power tilt indication value is less than the tilt threshold, the core loading scheme is used as the target loading scheme.
[0197] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:
[0198] If the quadrant power tilt indication value is not less than the tilt threshold, the core quadrant power tilt amount correction is performed on the core loading plan of the reactor to obtain a target loading plan.
[0199] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:
[0200] Based on the target theoretical model, determine the power deviation level corresponding to each component in the reactor in the historical cycle;
[0201] According to the power deviation level, the average correction parameters corresponding to the reactor history cycle are determined.
[0202] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:
[0203] Based on the target theoretical model, the theoretical power distribution level and the measured power distribution level corresponding to each reactor component in the historical cycle are obtained;
[0204] Based on the theoretical power distribution level and the measured power distribution level, the power deviation level corresponding to each component in the reactor in the historical cycle is determined.
[0205] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:
[0206] Data assimilation and / or data inversion are performed on the power deviation level to obtain an average correction parameter of the disturbance affecting the power deviation level.
[0207] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:
[0208] Performing data assimilation and / or data inversion on the power deviation level to obtain initial correction parameters for disturbances affecting the power deviation level in historical cycles;
[0209] Perform the mean operation on the initial correction parameters in the historical cycle to obtain the average correction parameters.
[0210] 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, and the collection, use and processing of relevant data must comply with the relevant laws, regulations and standards of relevant countries and regions.
[0211] Those skilled in the art will appreciate that all or part of the processes in the above-mentioned embodiments 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.
[0212] 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.
[0213] The above embodiments merely illustrate 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 invention. It should be noted that a person skilled in the art may make various modifications and improvements without departing from the spirit of the present invention, all of which 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 method for correcting the core quadrant power tilt of a reactor, characterized in that: The method comprises: Construct a target theoretical model based on the fuel manufacturing parameters, corrected burnup data, and corrected temperature distribution data corresponding to the reactor; Based on the target theoretical model, obtaining an initial life power deviation level corresponding to the reactor core loading scheme; determining an average correction parameter corresponding to the reactor's historical cycles; According to the initial life power deviation level and the average correction parameter, the core loading plan of the reactor is corrected by a core quadrant power tilt amount to obtain a target loading plan.
2. The method according to claim 1, characterized in that The step of performing core quadrant power tilt correction on the core loading plan of the reactor according to the initial life power deviation level and the average correction parameter to obtain a target loading plan includes: determining a quadrant power tilt indication value according to the initial life power deviation level and the average correction parameter; The core loading plan of the reactor is corrected by a core quadrant power tilt amount according to the quadrant power tilt indication value to obtain a target loading plan.
3. The method according to claim 2, characterized in that The determining of the quadrant power tilt indication value according to the initial life power deviation level and the average correction parameter includes: determining a target core theoretical power level according to the initial life power deviation level and the average correction parameter; A quadrant power tilt indication value is determined according to the target core theoretical power level.
4. The method according to claim 2, characterized in that The step of correcting the core quadrant power tilt amount of the reactor core loading plan according to the quadrant power tilt indicator value to obtain a target loading plan includes: If the quadrant power tilt indication value is less than the tilt threshold, the core loading plan is used as a target loading plan.
5. The method according to claim 2, characterized in that The step of correcting the core quadrant power tilt amount of the reactor core loading plan according to the quadrant power tilt indicator value to obtain a target loading plan includes: If the quadrant power tilt indication value is not less than the tilt threshold value, the core quadrant power tilt amount correction is performed on the core loading plan of the reactor to obtain a target loading plan.
6. The method according to claim 1, wherein Determining the average correction parameter corresponding to the reactor historical cycle includes: determining, based on the target theoretical model, a power deviation level corresponding to each component in the reactor in a historical cycle; An average correction parameter corresponding to the reactor historical cycles is determined according to the power deviation level.
7. The method according to claim 6, characterized in that Determining the power deviation level corresponding to each component in the reactor in the historical cycle based on the target theoretical model includes: Based on the target theoretical model, obtaining theoretical power distribution levels and measured power distribution levels corresponding to each component of the reactor in historical cycles; The power deviation level corresponding to each component in the reactor in the historical cycle is determined according to the theoretical power distribution level and the measured power distribution level.
8. The method according to claim 6, characterized in that Determining, based on the power deviation level, an average correction parameter corresponding to the reactor historical cycle includes: Data assimilation and / or data inversion are performed on the power deviation level to obtain an average correction parameter of the disturbance affecting the power deviation level.
9. The method according to claim 8, characterized in that If the reactor has multiple historical cycles, performing data assimilation and / or data inversion on the power deviation level to obtain an average correction parameter of the disturbance affecting the power deviation level includes: Performing data assimilation and / or data inversion on the power deviation level to obtain initial correction parameters of disturbances affecting the power deviation level in historical cycles; Perform the mean operation on the initial correction parameters in the historical cycle to obtain the average correction parameters.
10. A reactor core quadrant power tilt correction device, characterized in that: The device comprises: A construction module is used to construct a target theoretical model based on the fuel manufacturing parameters, corrected burnup data, and corrected temperature distribution data corresponding to the reactor; an acquisition module, configured to acquire, based on the target theoretical model, an initial life power deviation level corresponding to the reactor core loading scheme; a determination module, configured to determine an average correction parameter corresponding to the reactor historical cycle; An adjustment module is used to correct the core quadrant power tilt amount of the reactor core loading plan according to the initial life power deviation level and the average correction parameter to obtain a target loading plan.