Data correction method and device for nuclear reactor core

Abstract

The present application relates to a data correction method and device for a nuclear reactor core. The method comprises: obtaining the actual deviation from nucleate boiling ratio (DNBR) of the nuclear reactor core at the acquisition time; obtaining a correction factor for the nuclear reactor core; wherein the correction factor is obtained by processing the theoretical DNBR and self-powered neutron detector (SPND) detection signal of the nuclear reactor core, the first core hot channel position and calibration parameters of the nuclear reactor core in a calibration state, and the failed SPND position and number of failed SPNDs in the presence of a failed SPND; using the correction factor to correct the actual DNBR to obtain the target DNBR of the nuclear reactor core at the acquisition time. The present method can achieve efficient and accurate correction of the actually acquired DNBR in the presence of a failed SPND in the nuclear reactor core.

Description

Technical Field

[0001] The present application relates to the field of nuclear reactor core operation and safety technology, and in particular to a data correction method and device for a nuclear reactor core. Background Art

[0002] Calculating the core's departure from nucleate boiling ratio (DNBR) is crucial for nuclear power plant reactor core thermal-hydraulic design and accident analysis. The DNBR is a key parameter for determining whether Class I and Class II operating conditions meet acceptance criteria.

[0003] During nuclear power plant operation, self-powered neutron detectors (SPNDs) are constantly exposed to irradiation within the reactor core. Because some SPNDs are located within the core, they can fail and become unrepairable or impossible to replace within a single fuel cycle. The loss of some SPND measurement points can lead to a significant deviation between the calculated core power distribution and the actual power distribution, resulting in significant deviations in the calculated DNBR, impacting the normal operation of the reactor core.

[0004] Therefore, in order to ensure the safe operation of the nuclear reactor core, there is an urgent need for a solution that can accurately correct the actually collected DNBR when some SPNDs fail. Summary of the Invention

[0005] Based on this, it is necessary to provide a data correction method and device for a nuclear reactor core to address the above technical problems, which can efficiently and accurately correct the actually collected DNBR in the presence of a failed SPND in the nuclear reactor core.

[0006] In a first aspect, the present application provides a method for correcting data of a nuclear reactor core, comprising:

[0007] Obtain the actual deviation from nucleate boiling ratio DNBR of the nuclear reactor core at the time of acquisition;

[0008] Obtaining a correction factor of the nuclear reactor core; wherein the correction factor is obtained by processing a theoretical DNBR and a self-powered neutron detector (SPND) detection signal of the nuclear reactor core, a first core hot channel position and calibration parameters of the nuclear reactor core in a calibration state, and a failed SPND position and number of failed SPNDs in the nuclear reactor core;

[0009] The actual DNBR is corrected using the correction factor to obtain the target DNBR of the nuclear reactor core at the acquisition time.

[0010] In one embodiment, the method further comprises:

[0011] The operating states of each core of a nuclear reactor are simulated to obtain theoretical DNBR and SPND detection signals;

[0012] The calibration state of a nuclear reactor core is simulated to obtain the position of a first core hot channel and calibration parameters; wherein the calibration state is any core operating state.

[0013] In one embodiment, processing the theoretical DNBR and SPND detection signals of the nuclear reactor core, the position and calibration parameters of the first core hot channel of the nuclear reactor core in a calibration state, and the position and number of failed SPNDs of the nuclear reactor core includes:

[0014] The core power reconstruction algorithm is used to determine the reconstructed core power distribution of the nuclear reactor core based on the SPND detection signal and calibration parameters.

[0015] determining a first distance according to a position of a first core hot channel and a position of a failed SPND;

[0016] The correction factor is determined according to the reconstructed core power distribution, the position of the failed SPND, the number of failed SPND, the first distance and the theoretical DNBR.

[0017] In one embodiment, determining the correction factor according to the reconstructed core power distribution, the position of the failed SPND, the number of the failed SPND, the first distance, and the theoretical DNBR includes:

[0018] Determine the reconstructed DNBR and the second core hot channel position of the nuclear reactor core according to the reconstructed core power distribution;

[0019] The correction factor is determined according to the reconstructed DNBR, the position of the second core hot channel, the position of the failed SPND, the number of failed SPNDs, the first distance and the theoretical DNBR.

[0020] In one embodiment, determining the correction factor according to the reconstructed DNBR, the position of the second core hot channel, the position of the failed SPND, the number of failed SPNDs, the first distance, and the theoretical DNBR includes:

[0021] Determine the DNBR deviation based on the reconstructed DNBR and the theoretical DNBR;

[0022] determining a second distance according to the position of the failed SPND and the position of the second core hot channel;

[0023] A correction factor is determined based on the first distance, the second distance, the number of failed SPNDs, and the DNBR deviation. In one embodiment, the correction factor is used to correct the actual DNBR to obtain the target DNBR of the nuclear reactor core at the acquisition time, including:

[0024] The sum of the correction factor and the actual DNBR is taken as the target DNBR of the nuclear reactor core at the acquisition time.

[0025] In a second aspect, the present application further provides a data correction device for a nuclear reactor core, comprising:

[0026] A data acquisition module is used to obtain the actual deviation from nucleate boiling ratio DNBR of the nuclear reactor core at the time of acquisition;

[0027] A factor acquisition module is used to obtain a correction factor of the nuclear reactor core; wherein the correction factor is obtained by processing the theoretical DNBR and the self-powered neutron detector (SPND) detection signal of the nuclear reactor core, the position and calibration parameters of the first core hot channel of the nuclear reactor core in a calibration state, and the position and number of failed SPNDs in the nuclear reactor core when failed SPNDs exist;

[0028] The data correction module is used to correct the actual DNBR using a correction factor to obtain the target DNBR of the nuclear reactor core at the acquisition time.

[0029] In a third aspect, the present application further provides a computer device comprising a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the following steps are implemented:

[0030] Obtain the actual deviation from nucleate boiling ratio DNBR of the nuclear reactor core at the time of acquisition;

[0031] Obtaining a correction factor of the nuclear reactor core; wherein the correction factor is obtained by processing a theoretical DNBR and a self-powered neutron detector (SPND) detection signal of the nuclear reactor core, a first core hot channel position and calibration parameters of the nuclear reactor core in a calibration state, and a failed SPND position and number of failed SPNDs in the nuclear reactor core when a failed SPND exists;

[0032] The actual DNBR is corrected using the correction factor to obtain the target DNBR of the nuclear reactor core at the acquisition time.

[0033] In a fourth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the following steps are implemented:

[0034] Obtain the actual deviation from nucleate boiling ratio DNBR of the nuclear reactor core at the time of acquisition;

[0035] Obtaining a correction factor of the nuclear reactor core; wherein the correction factor is obtained by processing a theoretical DNBR and a self-powered neutron detector (SPND) detection signal of the nuclear reactor core, a first core hot channel position and calibration parameters of the nuclear reactor core in a calibration state, and a failed SPND position and number of failed SPNDs in the nuclear reactor core when a failed SPND exists;

[0036] The actual DNBR is corrected using the correction factor to obtain the target DNBR of the nuclear reactor core at the acquisition time.

[0037] In a fifth aspect, the present application further provides a computer program product, comprising a computer program, which, when executed by a processor, implements the following steps:

[0038] Obtain the actual deviation from nucleate boiling ratio DNBR of the nuclear reactor core at the time of acquisition;

[0039] Obtaining a correction factor of the nuclear reactor core; wherein the correction factor is obtained by processing a theoretical DNBR and a self-powered neutron detector (SPND) detection signal of the nuclear reactor core, a first core hot channel position and calibration parameters of the nuclear reactor core in a calibration state, and a failed SPND position and number of failed SPNDs in the nuclear reactor core when a failed SPND exists;

[0040] The actual DNBR is corrected using the correction factor to obtain the target DNBR of the nuclear reactor core at the acquisition time.

[0041] Compared with obtaining the actual DNBR of the nuclear reactor core directly collected, the above-mentioned data correction method and device for the nuclear reactor core introduces a correction factor determined according to the theoretical DNBR and SPND detection signal of the nuclear reactor core, the first core hot channel position and calibration parameters of the nuclear reactor core in the calibration state, and the failed SPND position and number of failed SPNDs in the nuclear reactor core in the presence of failed SPNDs. By correcting the actual DNBR of the nuclear reactor core at the acquisition time, it is possible to more accurately determine the target DNBR of the nuclear reactor core, thereby improving the operational safety of the nuclear reactor core. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0043] Figure 1 1 is a flow chart of a method for correcting data of a nuclear reactor core in one embodiment;

[0044] Figure 2 A schematic diagram of a process for determining a correction factor in one embodiment;

[0045] Figure 3 A schematic diagram of a flow chart for determining a correction factor in another embodiment;

[0046] Figure 4 Schematic diagram of a process for determining a correction factor in another embodiment;

[0047] Figure 5 is a flow chart of a method for correcting data of a nuclear reactor core in another embodiment;

[0048] Figure 6 is a structural block diagram of a data correction device for a nuclear reactor core in one embodiment;

[0049] Figure 7 is a structural block diagram of a data correction device for a nuclear reactor core in one embodiment;

[0050] Figure 8 is a structural block diagram of a data correction device for a nuclear reactor core in one embodiment;

[0051] Figure 9 FIG. 1 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0052] 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.

[0053] The nuclear reactor core data correction method provided in the embodiments of the present application can be applied to correct the actual DNBR of the nuclear reactor core at the time of acquisition when a SPND failure occurs in the nuclear reactor core. Optionally, this method can be applied in a server environment. A data storage system can store data that the server needs to process, such as actual DNBR and correction factors. The data storage system can be integrated with the server or located in the cloud or other network servers.

[0054] Specifically, in the event of a SPND failure in the nuclear reactor core, the server can obtain the actual DNBR of the nuclear reactor core at the time of acquisition and obtain a correction factor based on the theoretical DNBR and SPND detection signal of the nuclear reactor core, the location and calibration parameters of the first core hot channel in the calibration state of the nuclear reactor core, and the location and number of failed SPNDs in the nuclear reactor core when a failed SPND is present. Furthermore, the correction factor is used to correct the obtained actual DNBR to obtain the target DNBR of the nuclear reactor core at the time of acquisition. The server can be implemented as a standalone server or a server cluster consisting of multiple servers.

[0055] In an exemplary embodiment, Figure 1 As shown, a method for correcting data of a nuclear reactor core is provided. This method is described using a server as an example. It is understood that the method can also be applied to a system including a terminal and a server, and implemented through interaction between the terminal and the server. The method includes the following steps 101 to 103. Among them:

[0056] S101, obtaining the actual deviation from nucleate boiling ratio DNBR of the nuclear reactor core at the acquisition time.

[0057] The acquisition time is the time when the deviation from nucleate boiling ratio is acquired, and the actual deviation from nucleate boiling ratio is the actual deviation from nucleate boiling ratio obtained through acquisition.

[0058] Optionally, when there is an SPND failure in the nuclear reactor core and the DNBR of the nuclear reactor core needs to be corrected, the actual DNBR of the nuclear reactor core at the acquisition time may be acquired.

[0059] S102, obtaining a correction factor of the nuclear reactor core.

[0060] Among them, the correction factor is obtained by processing the theoretical DNBR and self-powered neutron detector SPND detection signal of the nuclear reactor core, the first core hot channel position and calibration parameters of the nuclear reactor core in the calibration state, and the failed SPND position and number of failed SPNDs in the nuclear reactor core when there are failed SPNDs. The theoretical DNBR is the DNBR of the nuclear reactor core assuming that no SPNDs of the nuclear reactor core have failed; the SPND detection signal is the detection signal collected by the SPND when no SPNDs of the nuclear reactor core have failed; the calibration state is the operating state of any specified nuclear reactor core; the first core hot channel position is the hot channel position of the nuclear reactor core in the calibration state; the calibration parameters are the parameters of the nuclear reactor core in the calibration state; the failed SPND position is the position of the failed SPND in the nuclear reactor core when a failed SPND exists; the number of failed SPNDs is the number of failed SPNDs in the nuclear reactor core when a failed SPND exists; for example, according to the data correction requirements of the nuclear reactor core, a certain number of SPNDs (such as 15 failed SPNDs can be randomly selected) can be randomly selected from all the SPNDs of the nuclear reactor core as failed SPNDs, and this number can be used as the number of failed SPNDs to determine the position of the failed SPNDs.

[0061] Optionally, if the correction factor of the nuclear reactor core is stored in the data storage system, the correction factor of the nuclear reactor core can be obtained directly from the data storage system; if the correction factor of the nuclear reactor core is not stored in the data storage system, the theoretical DNBR and SPND detection signals of the nuclear reactor core when the self-powered neutron detectors SPND are not failed, the first core hot channel position and calibration parameters of the calibration state of the nuclear reactor core when the SPNDs are not failed, and the failed SPND position and number of failed SPNDs of the nuclear reactor core when there are failed SPNDs can be obtained and processed to obtain the correction factor of the nuclear reactor core.

[0062] S103: Using the correction factor, the actual DNBR is corrected to obtain the target DNBR of the nuclear reactor core at the acquisition time.

[0063] The target DNBR is the corrected DNBR of the nuclear reactor core at the time of acquisition.

[0064] Optionally, after obtaining the actual DNBR of the nuclear reactor core at the time of acquisition and the correction factor for the nuclear reactor core, the actual DNBR can be corrected using the correction factor based on pre-defined correction logic to obtain a target DNBR for the nuclear reactor core at the time of acquisition. For example, the product of the correction factor and the actual DNBR can be used as the target DNBR for the nuclear reactor core at the time of acquisition.

[0065] Compared with obtaining the actual DNBR of the nuclear reactor core directly collected, the above-mentioned data correction method of the nuclear reactor core introduces a correction factor determined according to the theoretical DNBR and SPND detection signal of the nuclear reactor core, the first core hot channel position and calibration parameters of the nuclear reactor core in the calibration state, and the failed SPND position and number of failed SPNDs in the nuclear reactor core in the presence of failed SPNDs. By correcting the actual DNBR of the nuclear reactor core at the acquisition time, it is possible to more accurately determine the target DNBR of the nuclear reactor core, thereby improving the operational safety of the nuclear reactor core.

[0066] In order to more accurately determine the target DNBR of the nuclear reactor core, based on the above embodiment, in one embodiment, an implementable method is provided for the above S103, and the sum of the correction factor and the actual DNBR can be used as the target DNBR of the nuclear reactor core at the acquisition time.

[0067] Optionally, after obtaining the correction factor of the nuclear reactor core and the actual DNBR at the acquisition time, the sum of the correction factor of the nuclear reactor core and the actual DNBR can be determined by the following formula (1).

[0068] DNBR corr =DNBR cal +f (1)

[0069] Among them, DNBR corr That is the target DNBR of the nuclear reactor core at the time of acquisition; DNBR cal It is the actual DNBR of the nuclear reactor core at the time of acquisition; f is the correction factor of the nuclear reactor core.

[0070] Furthermore, the sum of the correction factor and the actual DNBR can be used as the target DNBR of the nuclear reactor core at the acquisition time.

[0071] It can be understood that using the sum of the correction factor and the actual DNBR as the target DNBR of the nuclear reactor core at the acquisition time can achieve a more efficient and accurate effect of determining the target DNBR.

[0072] In order to more accurately determine the correction factor of the nuclear reactor core, in an exemplary embodiment, as shown in FIG. Figure 2 As shown, the above S102 may include steps 201 to 202. Among them:

[0073] S201 , simulating the operating state of each core of the nuclear reactor core to obtain theoretical DNBR and SPND detection signals.

[0074] The operating status of each core may include the normal operating status and the accident operating status of the nuclear reactor core.

[0075] Optionally, the operating states of each core of the nuclear reactor core can be simulated by pre-installed simulation software to obtain the SPND detection signal of the nuclear reactor core in each operating state and the power distribution of the nuclear reactor core; further, based on pre-set calculation logic and according to the power distribution of the nuclear reactor core, the theoretical DNBR of the nuclear reactor core can be obtained.

[0076] S202, simulating the calibration state of the nuclear reactor core to obtain the first core hot channel position and calibration parameters.

[0077] The calibration status refers to any core stack operation status.

[0078] Optionally, the calibration state of the nuclear reactor can be simulated by pre-installed simulation software, and the hot channel position of the nuclear reactor core in the calibration state can be obtained as the first core hot channel position; and the calibration parameters of the nuclear reactor core in the calibration state can be obtained.

[0079] It can be understood that by simulating the operating status and calibration status of each core of the nuclear reactor core, the theoretical DNBR, SPND detection signal, first core channel position and calibration parameters can be obtained more accurately, thereby achieving the effect of improving the accuracy of determining the correction factor of the nuclear reactor core.

[0080] In order to improve the accuracy of determining the correction factor, in an exemplary embodiment, as Figure 3 As shown, the above S102 is further refined, and specifically can include steps 301 to 303. Among them:

[0081] S301 , using a core power reconstruction algorithm, and determining a reconstructed core power distribution of the nuclear reactor core according to the SPND detection signal and calibration parameters.

[0082] Among them, the core power reconstruction algorithm is an algorithm used to reconstruct and calculate the power distribution of the nuclear reactor core, which may include the weight coefficient method, thin plate spline function method, polynomial expansion method and ordinary Kriging method.

[0083] Optionally, after determining the SPND detection signal and calibration parameters of the nuclear reactor core, the SPND detection signal and calibration parameters can be input into the core power reconstruction algorithm. Through the core power reconstruction algorithm, the nuclear reactor core is reconstructed and calculated to determine the reconstructed power distribution of the nuclear reactor core.

[0084] S302 : Determine a first distance according to a position of a first core hot channel and a position of a failed SPND.

[0085] The first distance is the distance between the hot channel of the nuclear reactor core when all SPNDs are intact and the failed SPND in the nuclear reactor core.

[0086] Optionally, the first core hot channel position and the failed SPND position can be calculated based on a preset distance calculation logic to determine the first distance between the hot channel of the nuclear reactor core when all SPNDs are not failed and the failed SPND in the nuclear reactor core.

[0087] S303 : determining a correction factor according to the reconstructed core power distribution, the position of the failed SPND, the number of the failed SPND, the first distance, and the theoretical DNBR.

[0088] Optionally, after determining the reconstructed core power distribution and the first distance of the nuclear reactor core, the reconstructed core power distribution, the failed SPND position, the number of failed SPNDs, the first distance and the theoretical DNBR can be input into a pre-trained correction factor determination model, and the correction factor of the nuclear reactor core can be determined through the correction factor determination model.

[0089] It can be understood that by adopting the core power reconstruction algorithm, the reconstructed core power distribution of the nuclear reactor core can be determined more accurately; and then, based on the first core hot channel position and the failed SPND position, the first distance can be accurately determined; further, based on the reconstructed core power distribution, the first distance, the failed SPND position, the number of failed SPNDs, and the theoretical DNBR, the correction factor can be determined more accurately.

[0090] Based on the above embodiments, in an exemplary embodiment, as Figure 4 As shown, the above S303 is further refined, which may specifically include steps 401 to 402. Among them:

[0091] S401 , determining a reconstructed DNBR and a second core hot channel position of a nuclear reactor core according to the reconstructed core power distribution.

[0092] The reconstructed DNBR is the DNBR of the nuclear reactor core after the reconstructed calculation; and the hot channel position of the second core is the hot channel position of the nuclear reactor core after the reconstructed calculation.

[0093] Optionally, after determining the reconstructed power distribution of the nuclear reactor core, the reconstructed DNBR of the nuclear reactor core can be determined based on the pre-set calculation logic and the reconstructed core power distribution; further, the nuclear reactor core that has undergone reconstruction calculation can be analyzed based on the reconstructed core power distribution to determine the position of the second core hot channel.

[0094] S402 : Determine a correction factor according to the reconstructed DNBR, the position of the second core hot channel, the position of the failed SPND, the number of failed SPNDs, the first distance, and the theoretical DNBR.

[0095] Optionally, after determining the reconstructed DNBR of the nuclear reactor core and the position of the second core hot channel, the reconstructed DNBR, the position of the second core hot channel, the position of the failed SPND, the number of failed SPNDs, the first distance and the theoretical DNBR can be input into a pre-trained correction factor determination model, and the correction factor of the nuclear reactor core can be determined through the correction factor determination model.

[0096] It can be understood that by reconstructing the core power distribution, the reconstructed DNBR and the second core hot channel position of the nuclear reactor core can be accurately determined; further, based on the reconstructed DNBR, the second core hot channel position, the failed SPND position, the number of failed SPNDs, the first distance and the theoretical DNBR, the accuracy of determining the correction factor can be improved.

[0097] In an exemplary embodiment, an implementable method is provided for the above-mentioned S402, which is that after determining the reconstructed DNBR of the nuclear reactor core and the position of the second core hot channel, the DNBR deviation can be determined based on the reconstructed DNBR and the theoretical DNBR; the second distance can be determined based on the failed SPND position and the second core hot channel position; and the correction factor can be determined based on the first distance, the second distance, the number of failed SPNDs and the DNBR deviation.

[0098] The DNBR deviation is the deviation between the theoretical DNBR of the nuclear reactor core and the reconstructed DNBR of the nuclear reactor core after reconstruction calculation; the second distance is the distance between the hot channel of the nuclear reactor core after reconstruction calculation and the failed SPND in the nuclear reactor core.

[0099] Optionally, after determining the reconstructed DNBR of the nuclear reactor core and the position of the second core hot channel, the difference between the reconstructed DNBR and the theoretical DNBR can be calculated, and the difference can be used as the DNBR deviation of the nuclear reactor core; further, based on a pre-set distance calculation logic, the position of the second core hot channel and the position of the failed SPND are calculated to determine the second distance between the hot channel of the nuclear reactor core after reconstruction calculation when all SPNDs are not failed and the failed SPND in the nuclear reactor core; the DNBR deviation, the number of failed SPNDs, the first distance and the second distance are input into a pre-constructed correction factor calculation model, and the DNBR deviation, the number of failed SPNDs, the first distance and the second distance are data fitted through the correction factor calculation model to determine the correction factor of the nuclear reactor core.

[0100] It should be noted that by determining the DNBR deviation of the nuclear reactor core, the number of failed SPNDs and the second distance of the nuclear reactor core, combined with the first distance of the nuclear reactor core, the accuracy of determining the correction factor can be improved, thereby achieving a more accurate determination of the target DNBR of the nuclear reactor core at the acquisition time.

[0101] In one embodiment, Figure 5 As shown, a preferred embodiment of a data correction method for a nuclear reactor core is provided. The specific process is as follows:

[0102] S501, obtaining the actual deviation from nucleate boiling ratio DNBR of the nuclear reactor core at the acquisition time.

[0103] S502 , simulating the operating state of each core of the nuclear reactor core to obtain a theoretical DNBR and a self-powered neutron detector SPND detection signal.

[0104] S503, simulating the calibration state of the nuclear reactor core to obtain the first core hot channel position and calibration parameters.

[0105] The calibration status refers to any core stack operation status.

[0106] S504 , using a core power reconstruction algorithm, and determining a reconstructed core power distribution of the nuclear reactor core according to the SPND detection signal and calibration parameters.

[0107] S505 : Determine a first distance according to the position of the first core hot channel and the position of the failed SPND.

[0108] S506 , determining the reconstructed DNBR and the second core hot channel position of the nuclear reactor core according to the reconstructed core power distribution.

[0109] S507 , determining the DNBR deviation according to the reconstructed DNBR and the theoretical DNBR.

[0110] S508 : Determine a second distance according to the position of the failed SPND and the position of the second core hot channel.

[0111] S509 : Determine a correction factor according to the first distance, the second distance, the number of failed SPNDs, and the DNBR deviation.

[0112] S510 , taking the sum of the correction factor and the actual DNBR as the target DNBR of the nuclear reactor core at the acquisition time.

[0113] The specific process of the above S501-S510 can be found in the description of the above method embodiment. The implementation principle and technical effects are similar and will not be repeated here.

[0114] It should be understood that, although the various steps in the flowcharts involved in the various embodiments described above are displayed in sequence according to the instructions of the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and these steps can be executed in other orders. Moreover, at least a portion of the steps in the flowcharts involved in the various embodiments described above can include multiple steps or multiple stages, and these steps or stages are not necessarily executed and completed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a portion of steps or stages in other steps.

[0115] Based on the same inventive concept, embodiments of the present application also provide a nuclear reactor core data correction device for implementing the aforementioned nuclear reactor core data 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 data correction device for one or more nuclear reactor cores provided below can be found in the aforementioned limitations of the nuclear reactor core data correction method and will not be further elaborated here.

[0116] In an exemplary embodiment, Figure 6 As shown, a data correction device 1 for a nuclear reactor core is provided, comprising: a data acquisition module 10, a factor acquisition module 20 and a data correction module 30, wherein:

[0117] The data acquisition module 10 is used to obtain the actual deviation from nucleate boiling ratio DNBR of the nuclear reactor core at the acquisition time.

[0118] The factor acquisition module 20 is used to obtain the correction factor of the nuclear reactor core.

[0119] Among them, the correction factor is obtained by processing the theoretical DNBR and self-powered neutron detector SPND detection signal of the nuclear reactor core, the first core hot channel position and calibration parameters of the nuclear reactor core in the calibration state, and the failed SPND position and number of failed SPNDs in the nuclear reactor core when there are failed SPNDs.

[0120] The data correction module 30 is used to correct the actual DNBR using a correction factor to obtain the target DNBR of the nuclear reactor core at the acquisition time.

[0121] In an exemplary embodiment, the factor acquisition module 20 may be used to:

[0122] The operating states of each core of a nuclear reactor core are simulated to obtain theoretical DNBR and SPND detection signals; the calibration state of the nuclear reactor core is simulated to obtain the position of the first core hot channel and calibration parameters; wherein the calibration state is any core operating state.

[0123] In an exemplary embodiment, in the above Figure 6 On the basis of Figure 7 As shown, the factor acquisition module 20 may include:

[0124] The data determination unit 21 is configured to determine the reconstructed core power distribution of the nuclear reactor core according to the SPND detection signal and the calibration parameters using a core power reconstruction algorithm.

[0125] The distance determining unit 22 is configured to determine a first distance according to the position of the first core hot channel and the position of the failed SPND.

[0126] The factor determination unit 23 is configured to determine a correction factor according to the reconstructed core power distribution, the position of the failed SPND, the number of the failed SPND, the first distance, and the theoretical DNBR.

[0127] In an exemplary embodiment, in the above Figure 6 or Figure 7 On the basis of Figure 8 As shown, the factor determination unit 23 may include:

[0128] The position determination subunit 231 is used to determine the reconstructed DNBR and the second core hot channel position of the nuclear reactor core according to the reconstructed core power distribution.

[0129] The factor determination subunit 232 is configured to determine a correction factor according to the reconstructed DNBR, the position of the second core hot channel, the position of the failed SPND, the number of failed SPNDs, the first distance, and the theoretical DNBR.

[0130] In an exemplary embodiment, the factor determination subunit 232 may be specifically configured to:

[0131] The DNBR deviation is determined based on the reconstructed DNBR and the theoretical DNBR; the second distance is determined based on the position of the failed SPND and the position of the second core hot channel; and the correction factor is determined based on the first distance, the second distance, the number of failed SPNDs and the DNBR deviation.

[0132] In an exemplary embodiment, the data correction module 30 may be specifically used to:

[0133] The sum of the correction factor and the actual DNBR is taken as the target DNBR of the nuclear reactor core at the acquisition time.

[0134] Each module in the aforementioned nuclear reactor core data correction device may be implemented in whole or in part through software, hardware, or a combination thereof. Each module may be embedded in or independent of a processor in a computer device in the form of hardware, or may be stored in a computer device memory in the form of software, so that the processor can call and execute the corresponding operations of each module.

[0135] In an exemplary embodiment, a computer device is provided. The computer device may be a server, and its internal structure diagram may be as shown in FIG. Figure 9 As shown. The computer device includes a processor, a memory, an input / output interface (I / O) and a communication interface. The processor, memory and input / output interface are connected via a system bus, and the communication interface is 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, a computer program and a database. The internal memory provides an environment for the operation of the operating system and computer program in the non-volatile storage medium. The database of the computer device is used to store data such as actual DNBR and correction factors. 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 via a network connection. When the computer program is executed by the processor, a data correction method for a nuclear reactor core is implemented.

[0136] Those skilled in the art will understand that Figure 9 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.

[0137] In an exemplary 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:

[0138] Obtain the actual deviation from nucleate boiling ratio DNBR of the nuclear reactor core at the time of acquisition;

[0139] Obtaining a correction factor of the nuclear reactor core; wherein the correction factor is obtained by processing a theoretical DNBR and a self-powered neutron detector (SPND) detection signal of the nuclear reactor core, a first core hot channel position and calibration parameters of the nuclear reactor core in a calibration state, and a failed SPND position and number of failed SPNDs in the nuclear reactor core when a failed SPND exists;

[0140] The actual DNBR is corrected using the correction factor to obtain the target DNBR of the nuclear reactor core at the acquisition time.

[0141] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0142] The operating states of each core of a nuclear reactor are simulated to obtain theoretical DNBR and SPND detection signals;

[0143] The calibration state of a nuclear reactor core is simulated to obtain the position of a first core hot channel and calibration parameters; wherein the calibration state is any core operating state.

[0144] In one embodiment, when the processor executes the computer program to process the theoretical DNBR and SPND detection signals of the nuclear reactor core, the position and calibration parameters of the first core hot channel of the nuclear reactor core in a calibration state, and the position and number of failed SPNDs in the nuclear reactor core when a failed SPND exists, the processor further implements the following steps:

[0145] A core power reconstruction algorithm is adopted to determine the reconstructed core power distribution of the nuclear reactor core according to the SPND detection signal and calibration parameters. The first distance is determined according to the position of the first core hot channel and the position of the failed SPND. The correction factor is determined according to the reconstructed core power distribution, the position of the failed SPND, the number of failed SPNDs, the first distance and the theoretical DNBR.

[0146] In one embodiment, when the processor executes the computer program to determine the logic of the correction factor based on the reconstructed core power distribution, the failed SPND location, the first distance, and the theoretical DNBR, the processor further implements the following steps:

[0147] The reconstructed DNBR and the position of the second core hot channel of the nuclear reactor core are determined according to the reconstructed core power distribution; the correction factor is determined according to the reconstructed DNBR, the position of the second core hot channel, the position of the failed SPND, the number of failed SPNDs, the first distance and the theoretical DNBR.

[0148] In one embodiment, when the processor executes the computer program to determine the logic of the correction factor based on the reconstructed DNBR, the position of the second core hot channel, the position of the failed SPND, the number of failed SPNDs, the first distance, and the theoretical DNBR, the processor further implements the following steps:

[0149] The DNBR deviation is determined based on the reconstructed DNBR and the theoretical DNBR; the second distance is determined based on the position of the failed SPND and the position of the second core hot channel; and the correction factor is determined based on the first distance, the second distance, the number of failed SPNDs and the DNBR deviation.

[0150] In one embodiment, when the processor executes the computer program to use the correction factor to correct the actual DNBR to obtain the target DNBR of the nuclear reactor core at the acquisition time, the processor further implements the following steps:

[0151] The sum of the correction factor and the actual DNBR is taken as the target DNBR of the nuclear reactor core at the acquisition time.

[0152] 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:

[0153] Obtain the actual deviation from nucleate boiling ratio DNBR of the nuclear reactor core at the time of acquisition;

[0154] Obtaining a correction factor of the nuclear reactor core; wherein the correction factor is obtained by processing a theoretical DNBR and a self-powered neutron detector (SPND) detection signal of the nuclear reactor core, a first core hot channel position and calibration parameters of the nuclear reactor core in a calibration state, and a failed SPND position and number of failed SPNDs in the nuclear reactor core when a failed SPND exists;

[0155] The actual DNBR is corrected using the correction factor to obtain the target DNBR of the nuclear reactor core at the acquisition time.

[0156] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:

[0157] The operating states of each core of a nuclear reactor core are simulated to obtain theoretical DNBR and SPND detection signals; the calibration state of the nuclear reactor core is simulated to obtain the position of the first core hot channel and calibration parameters; wherein the calibration state is any core operating state.

[0158] In one embodiment, when the computer program is executed by a processor, logic for processing theoretical DNBR and SPND detection signals of a nuclear reactor core when none of the self-powered neutron detectors (SPNDs) fail, the position and calibration parameters of a first core hot channel in a calibration state of the nuclear reactor core when none of the SPNDs fail, and the position and number of failed SPNDs in a nuclear reactor core when there are failed SPNDs further implements the following steps:

[0159] A core power reconstruction algorithm is adopted to determine the reconstructed core power distribution of the nuclear reactor core according to the SPND detection signal and calibration parameters. The first distance is determined according to the position of the first core hot channel and the position of the failed SPND. The correction factor is determined according to the reconstructed core power distribution, the position of the failed SPND, the number of failed SPNDs, the first distance and the theoretical DNBR.

[0160] In one embodiment, when the computer program is executed by a processor, the logic for determining the correction factor based on the reconstructed core power distribution, the failed SPND location, the first distance, and the theoretical DNBR further implements the following steps:

[0161] The reconstructed DNBR and the position of the second core hot channel of the nuclear reactor core are determined according to the reconstructed core power distribution; the correction factor is determined according to the reconstructed DNBR, the position of the second core hot channel, the position of the failed SPND, the number of failed SPNDs, the first distance and the theoretical DNBR.

[0162] In one embodiment, when the computer program is executed by a processor, the logic for determining the correction factor based on the reconstructed DNBR, the position of the second core hot channel, the position of the failed SPND, the number of failed SPNDs, the first distance, and the theoretical DNBR further implements the following steps:

[0163] The DNBR deviation is determined based on the reconstructed DNBR and the theoretical DNBR; the second distance is determined based on the position of the failed SPND and the position of the second core hot channel; and the correction factor is determined based on the first distance, the second distance, the number of failed SPNDs and the DNBR deviation.

[0164] In one embodiment, when the computer program uses the correction factor to correct the actual DNBR to obtain the target DNBR of the nuclear reactor core at the acquisition time, the following steps are further implemented by the processor:

[0165] The sum of the correction factor and the actual DNBR is taken as the target DNBR of the nuclear reactor core at the acquisition time.

[0166] In one embodiment, a computer program product is provided, comprising a computer program, which, when executed by a processor, implements the following steps:

[0167] Obtain the actual deviation from nucleate boiling ratio DNBR of the nuclear reactor core at the time of acquisition;

[0168] Obtaining a correction factor of the nuclear reactor core; wherein the correction factor is obtained by processing a theoretical DNBR and a self-powered neutron detector (SPND) detection signal of the nuclear reactor core, a first core hot channel position and calibration parameters of the nuclear reactor core in a calibration state, and a failed SPND position and number of failed SPNDs in the nuclear reactor core when a failed SPND exists;

[0169] The actual DNBR is corrected using the correction factor to obtain the target DNBR of the nuclear reactor core at the acquisition time.

[0170] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:

[0171] The operating states of each core of a nuclear reactor core are simulated to obtain theoretical DNBR and SPND detection signals; the calibration state of the nuclear reactor core is simulated to obtain the position of the first core hot channel and calibration parameters; wherein the calibration state is any core operating state.

[0172] In one embodiment, when the computer program executes logic for processing theoretical DNBR and SPND detection signals of the nuclear reactor core, the position and calibration parameters of the first core hot channel of the nuclear reactor core in a calibration state, and the position and number of failed SPNDs in the presence of failed SPNDs in the nuclear reactor core, the computer program further implements the following steps:

[0173] A core power reconstruction algorithm is adopted to determine the reconstructed core power distribution of the nuclear reactor core according to the SPND detection signal and calibration parameters. The first distance is determined according to the position of the first core hot channel and the position of the failed SPND. The correction factor is determined according to the reconstructed core power distribution, the position of the failed SPND, the number of failed SPNDs, the first distance and the theoretical DNBR.

[0174] In one embodiment, when the computer program is executed by a processor, the logic for determining the correction factor based on the reconstructed core power distribution, the failed SPND location, the failed SPND number, the first distance, and the theoretical DNBR further implements the following steps:

[0175] The reconstructed DNBR and the position of the second core hot channel of the nuclear reactor core are determined according to the reconstructed core power distribution; the correction factor is determined according to the reconstructed DNBR, the position of the second core hot channel, the position of the failed SPND, the number of failed SPNDs, the first distance and the theoretical DNBR.

[0176] In one embodiment, when the computer program is executed by a processor, the logic for determining the correction factor based on the reconstructed DNBR, the position of the second core hot channel, the position of the failed SPND, the number of failed SPNDs, the first distance, and the theoretical DNBR further implements the following steps:

[0177] The DNBR deviation is determined based on the reconstructed DNBR and the theoretical DNBR; the second distance is determined based on the position of the failed SPND and the position of the second core hot channel; and the correction factor is determined based on the first distance, the second distance, the number of failed SPNDs and the DNBR deviation.

[0178] In one embodiment, when the computer program uses the correction factor to correct the actual DNBR to obtain the target DNBR of the nuclear reactor core at the acquisition time, the following steps are further implemented by the processor:

[0179] The sum of the correction factor and the actual DNBR is taken as the target DNBR of the nuclear reactor core at the acquisition time.

[0180] It should be noted that the data involved in this application (including but not limited to data used for actual DNBR, correction factors, etc.) are all data fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant regulations.

[0181] Those skilled in the art will appreciate that all or part of the processes in the above-mentioned embodiment methods can be implemented by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, database or other media used in the embodiments provided in this application may include at least one of non-volatile and volatile memory. Non-volatile memory may include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory may include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in the various embodiments provided herein may include at least one of a relational database and a non-relational database. Non-relational databases may include, but are not limited to, distributed databases based on blockchains. The processor involved in the various embodiments provided herein may be, but are not limited to, a general-purpose processor, a central processing unit, a graphics processing unit, a digital signal processor, a programmable logic unit, a data processing logic unit based on quantum computing, and the like.

[0182] 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.

[0183] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be determined by the appended claims.

Claims

1. A data correction method for a nuclear reactor core, characterized in that: The method comprises: Obtain the actual deviation from nucleate boiling ratio DNBR of the nuclear reactor core at the time of acquisition; Determining a reconstructed core power distribution of the nuclear reactor core by adopting a core power reconstruction algorithm based on a detection signal of a self-powered neutron detector (SPND) and calibration parameters of the nuclear reactor core in a calibration state; determining a first distance according to a first core hot channel position of the nuclear reactor core in a calibration state and a failed SPND position of the nuclear reactor core in a case where a failed SPND exists; determining a reconstructed DNBR and a second core hot channel position of the nuclear reactor core according to the reconstructed core power distribution; determining a DNBR deviation based on the reconstructed DNBR and a theoretical DNBR of the nuclear reactor core; determining a second distance according to a failed SPND position of the nuclear reactor core and a position of the second core hot channel; determining a correction factor according to the first distance, the second distance, the number of failed SPNDs in the nuclear reactor core in the presence of failed SPNDs, and the DNBR deviation; The actual DNBR is corrected using the correction factor to obtain the target DNBR of the nuclear reactor core at the acquisition time.

2. The method according to claim 1, characterized in that The method further comprises: Simulating the operating state of each core of the nuclear reactor core to obtain theoretical DNBR and SPND detection signals; The calibration state of the nuclear reactor core is simulated to obtain the first core hot channel position and calibration parameters; wherein the calibration state is any core operating state.

3. The method according to claim 2, characterized in that The simulating the operating state of each core of the nuclear reactor core to obtain theoretical DNBR and SPND detection signals includes: Simulating the operating states of each core of the nuclear reactor core using pre-installed simulation software to obtain the SPND detection signal of the nuclear reactor core in each operating state and the power distribution of the nuclear reactor core; Based on a preset calculation logic and according to the power distribution of the nuclear reactor core, a theoretical DNBR of the nuclear reactor core is obtained.

4. The method according to claim 1, wherein The method of correcting the actual DNBR by using the correction factor to obtain the target DNBR of the nuclear reactor core at the acquisition time includes: The sum of the correction factor and the actual DNBR is used as the target DNBR of the nuclear reactor core at the acquisition time.

5. The method according to claim 1, characterized in that The determining of the DNBR deviation based on the reconstructed DNBR and the theoretical DNBR of the nuclear reactor core includes: A difference between the reconstructed DNBR and a theoretical DNBR of the nuclear reactor core is calculated, and the difference is used as the DNBR deviation.

6. The method according to claim 1, wherein The theoretical DNBR is the DNBR when the nuclear reactor core does not fail in any SPND.

7. The method according to claim 1, characterized in that The first distance is the distance between a hot channel of the nuclear reactor core when all SPNDs are intact and a failed SPND in the nuclear reactor core.

8. The method according to claim 1, characterized in that The second distance is the distance between the hot channel of the nuclear reactor core calculated after reconstruction and the failed SPND in the nuclear reactor core.

9. The method according to claim 1, characterized in that The core power reconstruction algorithm is used to determine the reconstructed core power distribution of the nuclear reactor core according to the detection signal of the self-powered neutron detector (SPND) and the calibration parameters of the nuclear reactor core in the calibration state, including: The SPND detection signal and the calibration parameters are input into the core power reconstruction algorithm to perform reconstruction calculation to obtain the reconstructed power distribution of the nuclear reactor core.

10. A data correction device for a nuclear reactor core, characterized in that: The device comprises: A data acquisition module is used to obtain the actual deviation from nucleate boiling ratio DNBR of the nuclear reactor core at the time of acquisition; A factor acquisition module is configured to adopt a core power reconstruction algorithm to determine a reconstructed core power distribution of the nuclear reactor core based on a self-powered neutron detector (SPND) detection signal and a calibration parameter of the nuclear reactor core in a calibration state; determine a first distance based on a first core hot channel position of the nuclear reactor core in a calibration state and a failed SPND position of the nuclear reactor core in the presence of a failed SPND; determine a reconstructed DNBR and a second core hot channel position of the nuclear reactor core based on the reconstructed core power distribution; determine a DNBR deviation based on the reconstructed DNBR and a theoretical DNBR of the nuclear reactor core; determine a second distance based on the failed SPND position of the nuclear reactor core and the second core hot channel position; and determine a correction factor based on the first distance, the second distance, the number of failed SPNDs of the nuclear reactor core in the presence of a failed SPND, and the DNBR deviation; The data correction module is used to correct the actual DNBR using the correction factor to obtain the target DNBR of the nuclear reactor core at the acquisition time.

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