Control method and apparatus for quadrant power tilt of reactor core, and computer device

Abstract

The present disclosure relates to a control method and apparatus for the quadrant power tilt of a reactor core, and a computer device. The method comprises: on the basis of a first change amount of a quadrant power tilt caused by fuel burn-up of each quadrant of a reactor core in a fuel cycle containing burnable poisons, a second change amount of the quadrant power tilt caused by the burn-up of the burnable poisons, and a burn-up increment of the reactor core, determining a first expression of a first change rate of the quadrant power tilt corresponding to each quadrant in the fuel cycle containing the burnable poisons; then, on the basis of the first expression of the first change rate of the quadrant power tilt, determining target parameters of the burnable poisons that affect the quadrant power tilt of the reactor core; and controlling the quadrant power tilt of the reactor core on the basis of the target parameters of the burnable poisons, so as to control an increase in the quadrant power tilt.

Description

Core quadrant power tilt control method, device and computer equipment

[0001] Cross-references

[0002] The present disclosure refers to Chinese patent application No. 2023115177978, entitled “Quadrant power tilt control method, device and computer equipment for core” filed on November 15, 2023, which is incorporated into the present disclosure in its entirety by reference. Technical Field

[0003] The present disclosure relates to the field of nuclear power plant control technology, and in particular to a method, device and computer equipment for controlling quadrant power tilt of a reactor core. Background Art

[0004] The Quadrant Power Tilt Ratio (QPTR) is the ratio of the power in each of the four quadrants of a reactor to its average. It measures the symmetry of the radial power distribution in the core, making it a crucial safety factor for routine monitoring in pressurized water reactor (PWR) nuclear power plants. While an increase in QPTR does not directly affect the safe operation of the reactor, it can indirectly impact its operation and safety margins.

[0005] Therefore, how to control the increase of quadrant power tilt has become a technical problem that needs to be solved urgently in this field.

[0006] Summary of the Invention

[0007] Based on this, the present disclosure provides a quadrant power tilt control method, apparatus, and computer equipment for a reactor core capable of controlling the increase in quadrant power tilt.

[0008] In a first aspect, the present disclosure provides a method for controlling quadrant power tilt of a reactor core. The method comprises:

[0009] Determine a first expression for a first change rate of the quadrant power tilt corresponding to each quadrant in the fuel cycle containing the burnable poison based on a first change in the quadrant power tilt caused by fuel combustion in each quadrant of the core in the fuel cycle containing the burnable poison, a second change in the quadrant power tilt caused by the combustion of the burnable poison, and a burnup increment of the core;

[0010] determining a target parameter of the burnable poison affecting the quadrant power tilt of the core according to a first expression for a first rate of change of the quadrant power tilt;

[0011] The quadrant power tilt of the core is controlled according to the target parameter of the burnable poison.

[0012] In one embodiment, the first expression for determining a first change rate of the quadrant power tilt corresponding to each quadrant in the fuel cycle containing burnable poison based on a first change in the quadrant power tilt caused by fuel combustion in each quadrant of the core in the fuel cycle containing burnable poison, a second change in the quadrant power tilt caused by the combustion of the burnable poison, and the burnup increment of the core includes:

[0013] Dividing the first change in the quadrant power tilt by the fuel consumption increment to obtain a second expression for a second change rate of the quadrant power tilt;

[0014] Dividing the second change in the quadrant power tilt by the fuel consumption increment to obtain a third expression for a third rate of change of the quadrant power tilt;

[0015] The first expression is determined according to the second expression and the third expression.

[0016] In one embodiment, determining the first expression according to the second expression and the third expression includes:

[0017] The second expression and the third expression are added to obtain the first expression.

[0018] In one embodiment, the method further comprises:

[0019] Determine, based on the relationship between the quadrant power of each quadrant and the fuel consumption increment, a fourth expression for a fourth rate of change of the quadrant power gradient corresponding to each quadrant in a fuel cycle free of burnable poisons;

[0020] The determining, based on a first expression for a first rate of change of the quadrant power tilt, a target parameter affecting the quadrant power tilt of the core, comprises:

[0021] According to the fourth expression and the first expression, the target parameter of the burnable poison affecting the quadrant power tilt of the core is determined.

[0022] In one embodiment, determining the target parameter of the burnable poison affecting the quadrant power tilt of the core according to the fourth expression and the first expression includes:

[0023] determining a similarity between the fourth expression and the second expression;

[0024] When the similarity is greater than a preset similarity threshold, the target parameter is determined according to a third expression of a third change rate of the quadrant power tilt.

[0025] In one embodiment, the method further comprises:

[0026] For each quadrant, determine a product corresponding to the mth burnable poison assembly in the quadrant; the product is the product of the power of the burnable poison assembly containing the burnable poison in the quadrant, the burnup increment, and the slope corresponding to the y burnable poison assemblies; the slope is the slope of the curve segment in the K infinity versus burnup curve where reactivity increases with increasing burnup, where m is an integer greater than or equal to 1 and less than or equal to the total number of burnable poison assemblies in the quadrant;

[0027] Determine the summation result based on the product result corresponding to the mth burnable poison component in the quadrant;

[0028] Determining a second change in the quadrant power tilt according to the summation result and the quadrant power of the quadrant;

[0029] The determining the target parameter according to a third expression of a third rate of change of the quadrant power slope comprises:

[0030] The target parameter is determined according to the slope in the third expression.

[0031] In one embodiment, controlling the quadrant power tilt of the core according to the target parameter of the burnable poison includes:

[0032] If the target parameter is greater than a first preset parameter, prohibiting the use of the burnable poison to control the quadrant power tilt of the core;

[0033] If the target parameter is less than a second preset parameter, the amount of the burnable poison used is controlled to control the quadrant power tilt of the core.

[0034] In a second aspect, the present disclosure further provides a quadrant power tilt control device for a reactor core. The device comprises:

[0035] a first determining module for determining a first expression for a first change rate of the quadrant power tilt corresponding to each quadrant in the fuel cycle containing burnable poison based on a first change amount of the quadrant power tilt caused by fuel combustion in each quadrant of the reactor core in the fuel cycle containing burnable poison, a second change amount of the quadrant power tilt caused by the combustion of the burnable poison, and a burnup increment of the reactor core;

[0036] a second determining module, configured to determine a target parameter of the burnable poison affecting the quadrant power tilt of the core according to a first expression for a first change rate of the quadrant power tilt;

[0037] A control module is used to control the quadrant power tilt of the core according to the target parameter of the burnable poison.

[0038] In a third aspect, the present disclosure further provides a computer device, comprising a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of any of the above methods when executing the computer program.

[0039] In a fourth aspect, the present disclosure further provides a computer-readable storage medium having a computer program stored thereon, which implements the steps of any of the above methods when executed by a processor.

[0040] In the technical solution of the embodiment of the present application, a first expression of the first change rate of the quadrant power tilt corresponding to each quadrant in the fuel cycle containing burnable poison is determined based on the first change amount of the quadrant power tilt caused by fuel combustion in each quadrant of the core in the fuel cycle containing burnable poison, the second change amount of the quadrant power tilt caused by the combustion of burnable poison and the burnup increase of the core. Then, based on the first expression of the first change rate of the quadrant power tilt, the target parameters of the burnable poison that affect the quadrant power tilt of the core are determined. Based on the target parameters of the burnable poison, the quadrant power tilt of the core is controlled, thereby controlling the increase in the quadrant power tilt.

[0041] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the embodiments below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present disclosure. The same reference numerals are used throughout the drawings to denote the same components. In the drawings:

[0043] FIG1 is a diagram showing the internal structure of a computer device provided in an embodiment of the present application;

[0044] FIG2 is a schematic flow chart of a quadrant power tilt control method for a core provided in an embodiment of the present application;

[0045] FIG3 shows two possible quadrant division methods provided in an embodiment of the present application;

[0046] FIG4 is a schematic diagram showing how quadrant power tilt TILT varies with fuel consumption in a fuel cycle provided by an embodiment of the present application;

[0047] FIG5 is a flow chart of a first expression acquisition method provided in an embodiment of the present application;

[0048] FIG6 is a flow chart of a method for obtaining target parameters according to an embodiment of the present application;

[0049] FIG7 is a schematic diagram showing how quadrant power tilt TILT varies with fuel consumption in another fuel cycle provided by an embodiment of the present application;

[0050] FIG8 is a flow chart of another target parameter acquisition method provided in an embodiment of the present application;

[0051] FIG9 is a flow chart of another target parameter acquisition method provided in an embodiment of the present application;

[0052] FIG10 is a schematic diagram of a K infinity versus fuel consumption curve provided in an embodiment of the present application;

[0053] FIG11 is a flow chart of a core design method for controlling quadrant power tilt increase during operation of a pressurized water reactor nuclear power plant according to an embodiment of the present application;

[0054] FIG12 is a structural block diagram of quadrant power tilt control of a core provided in an embodiment of the present application. DETAILED DESCRIPTION

[0055] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0056] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0057] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0058] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0059] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0060] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0061] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0062] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0063] The Quadrant Power Tilt Ratio (QPTR) is the ratio of the power in each of the four quadrants of a reactor to its average. It measures the symmetry of the radial power distribution in the core, making it a crucial safety factor for routine monitoring in pressurized water reactor (PWR) nuclear power plants. While an increase in QPTR does not directly affect the safe operation of the reactor, it can indirectly impact its operation and safety margins.

[0064] Therefore, how to control the increase of quadrant power tilt has become a technical problem that needs to be solved urgently in this field.

[0065] The quadrant power tilt control method for the core provided in an embodiment of the present application can be applied in an application environment as shown in Figure 1. Figure 1 is an internal structure diagram of a computer device provided in an embodiment of the present application. The computer device can be a server, and its internal structure diagram can be as shown in Figure 1. The computer device includes a processor, a memory, and a network interface connected via a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The network interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a quadrant power tilt control method for the core is implemented.

[0066] Those skilled in the art will understand that the structure shown in Figure 1 is merely a block diagram of a portion of the structure related to the technical solution of the present application, and does not constitute a limitation on the computer device to which the technical 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.

[0067] In one embodiment, as shown in FIG2 , FIG2 is a flow chart of a quadrant power tilt control method for a reactor core provided by an embodiment of the present application. The method can be applied to the computer device in FIG1 . The method includes the following steps:

[0068] S201, determining a first expression for a first change rate of the quadrant power tilt corresponding to each quadrant in a fuel cycle containing burnable poison based on a first change in the quadrant power tilt caused by fuel combustion in each quadrant of the core in a fuel cycle containing burnable poison, a second change in the quadrant power tilt caused by combustion of the burnable poison, and a burnup increment of the core.

[0069] In an embodiment of the present application, the core can be divided into four sub-cores, and the areas where the four sub-cores are located are defined as four quadrants. For example, as shown in FIG3 , FIG3 illustrates two possible quadrant division methods provided in an embodiment of the present application. The core can be divided into four sub-cores along a coordinate axis or a diagonal line, and the areas where the four sub-cores are located are defined as four quadrants.

[0070] In the embodiments of the present application, a fuel cycle containing burnable poisons may be a fuel cycle containing burnable poisons in the reactor core, wherein the burnable poisons may be boron poisons, gadolinium poisons, erbium poisons, etc. The core burnup increment may be the increase in burnup caused by fuel combustion or burnable poison combustion during the fuel cycle, and the quadrant power tilt change may be the change in quadrant power tilt when the core burnup increases during the fuel cycle.

[0071] In the embodiment of the present application, quadrant power tilt can be expressed by TILT, and the TILT of each quadrant of the core can be defined as Where Pi is the quadrant power of the i-th quadrant, which can be defined as TILTi is the quadrant power tilt of the i-th quadrant, Pj is the component power of the j-th component in the i-th quadrant, and the total number of components in the i-th quadrant is N.

[0072] For example, as shown in Figure 4, which is a schematic diagram illustrating the variation of quadrant power tilt (TILT) with burnup in a fuel cycle according to an embodiment of the present application, at the beginning of the lifecycle, the TILT value in the lower quadrant (quadrant 4) of the core reaches a maximum of approximately 0.4%. The TILT value in the opposite quadrant (quadrant 2) of the core reaches a minimum of approximately -0.7%. As core burnup increases, the TILT value in the 4th quadrant increases, before rapidly decreasing at a burnup of 10,000 MWd / tU. Conversely, the TILT value in the opposite quadrant (quadrant 2) decreases, before rapidly increasing at a burnup of 10,000 MWd / tU.

[0073] S202 : Determine target parameters of burnable poison that affect the quadrant power tilt of the core according to a first expression of a first change rate of the quadrant power tilt.

[0074] In an embodiment of the present application, the first change rate of quadrant power tilt can be the ratio of the change in quadrant power tilt to the fuel consumption increment, that is, the first expression can be ΔTILT / ΔBu, where ΔTILT is the change in quadrant power tilt when the core fuel consumption increases from Bu1 to Bu2, and ΔBu is the fuel consumption increment.

[0075] In an embodiment of the present application, a target parameter interval can be preset based on the target parameter of the burnable poison, and the type and amount of the burnable poison can be determined based on the target parameter interval, thereby controlling the quadrant power tilt of the core.

[0076] S203, controlling the quadrant power tilt of the core according to the target parameters of the burnable poison.

[0077] When designing a core loading plan, the core's quadrant power tilt can be controlled based on the target parameter for the burnable poison. For example, if the target parameter is greater than a first preset parameter, the use of the burnable poison corresponding to the target parameter is prohibited to control the core's quadrant power tilt. Alternatively, if the target parameter is less than a second preset parameter, the amount of burnable poison used corresponding to the target parameter is controlled to control the core's quadrant power tilt.

[0078] In an embodiment of the present application, a first expression for the first change rate of the quadrant power tilt corresponding to each quadrant in a fuel cycle containing burnable poison is determined based on the first change in the quadrant power tilt caused by fuel combustion in each quadrant of the core in a fuel cycle containing burnable poison, the second change in the quadrant power tilt caused by combustion of burnable poison, and the burnup increase of the core. Then, based on the first expression for the first change rate of the quadrant power tilt, the target parameters affecting the quadrant power tilt of the core are determined, wherein the target parameters are used to control the quadrant power tilt of the core, thereby controlling the increase in the quadrant power tilt.

[0079] Referring to Figure 5, Figure 5 is a flow chart of a method for obtaining a first expression provided by an embodiment of the present application. This embodiment relates to a possible implementation method of determining a first expression of a first rate of change of the quadrant power tilt corresponding to each quadrant in a fuel cycle containing burnable poisons based on a first change in the quadrant power tilt caused by fuel combustion in each quadrant of the core in a fuel cycle containing burnable poisons, a second change in the quadrant power tilt caused by the combustion of burnable poisons, and a burnup increment of the core. Based on the above embodiment, the above S201 includes the following steps:

[0080] S501 , dividing the first change amount of the quadrant power tilt by the fuel consumption increment to obtain a second expression for a second change rate of the quadrant power tilt.

[0081] In the embodiment of the present application, the second expression can be ΔTILTBu / ΔBu, where ΔTILTBu is the first change in quadrant power tilt caused by fuel combustion in a fuel cycle containing burnable poisons when the core burnup increases from Bu1 to Bu2, and ΔBu is the burnup increment, so

[0082] S502 : Divide the second change in the quadrant power tilt by the fuel consumption increment to obtain a third expression for a third change rate of the quadrant power tilt.

[0083] In an embodiment of the present application, the third expression can be ΔTILTGd / ΔBu, where ΔTILTGd is the first change in quadrant power tilt caused by the combustion of burnable poison in a fuel cycle containing burnable poison when the core burnup increases from Bu1 to Bu2, and ΔBu is the burnup increment.

[0084] S503: Determine the first expression according to the second expression and the third expression.

[0085] In an embodiment of the present application, the first change rate of the quadrant power tilt corresponding to the first expression can be the ratio of the quadrant power tilt change to the fuel consumption increment, wherein the quadrant power tilt change and the fuel consumption increment are jointly caused by the fuel combustion and the burnable poison combustion in the fuel cycle containing burnable poisons. Therefore, the quadrant power tilt change and the fuel consumption increment can be determined based on the first change of the quadrant power tilt and the fuel consumption increment in the second expression, and the second change of the quadrant power tilt and the fuel consumption increment in the third expression, thereby determining the first expression based on the quadrant power tilt change and the fuel consumption increment.

[0086] In the embodiment of the present application, the second expression and the third expression may be added together to obtain the first expression, or the second expression and the third expression may be multiplied by preset coefficients and then added together to obtain the first expression.

[0087] In an embodiment of the present application, a first change in quadrant power tilt is divided by the burnup increment to obtain a second expression for a second rate of change of quadrant power tilt. The second change in quadrant power tilt is then divided by the burnup increment to obtain a third expression for a third rate of change of quadrant power tilt. Finally, a first expression is determined based on the second and third expressions. Because the change in quadrant power tilt and the burnup increment are both caused by fuel combustion and burnable poison combustion in a fuel cycle containing burnable poison, the first expression can be determined based on the second and third expressions. The first expression is then used to determine a target parameter affecting the core's quadrant power tilt, where the target parameter is used to control the core's quadrant power tilt, thereby controlling the increase in quadrant power tilt.

[0088] Based on the above embodiment, the above S503, determining the first expression according to the second expression and the third expression, can be implemented as follows:

[0089] Add the second expression to the third expression to get the first expression.

[0090] In the embodiment of the present application, the second expression and the third expression may be added together to obtain the first expression, or the second expression and the third expression may be multiplied by preset coefficients and then added together to obtain the first expression.

[0091] Illustratively, the first expression may be ΔTILT / ΔBu=ΔTILTBu / ΔBu+ΔTILTGd / ΔBu.

[0092] In an embodiment of the present application, the second expression and the third expression are added to obtain a first expression. Since the quadrant power tilt change and the burnup increase are jointly caused by the fuel combustion and the burnable poison combustion in the fuel cycle containing burnable poisons, the second expression and the third expression are added to obtain the first expression, and then the target parameters affecting the quadrant power tilt of the core are determined according to the first expression, wherein the target parameters are used to control the quadrant power tilt of the core, thereby controlling the increase in the quadrant power tilt.

[0093] Referring to Figure 6, Figure 6 is a flow chart of a method for obtaining target parameters provided by an embodiment of the present application. Based on the above embodiment, the method includes the following steps:

[0094] S601, based on the relationship between the quadrant power and the fuel consumption increment of each quadrant, determine a fourth expression for a fourth change rate of the quadrant power inclination corresponding to each quadrant in a fuel cycle without burnable poison.

[0095] In this embodiment of the present application, the relationship between the quadrant power and the fuel consumption increment for each quadrant can be expressed as ΔBu = P × Δt, where P is the quadrant power and ΔBu is the fuel consumption increment within the time increment Δt. A fourth expression for each quadrant can be expressed as the ratio of the quadrant power tilt change ΔTILT' to the fuel consumption increment ΔBu, i.e., ΔTILT' / ΔBu.

[0096] Based on the relationship between quadrant power and fuel consumption increment, it can be concluded that fuel consumption has a "self-restraining" effect on power distribution. Specifically, when power at a particular location is high, the magnitude of the fuel consumption increase is also large. A relatively large fuel consumption will tend to reduce the relative power at that location. Conversely, when power at a particular location is low, the magnitude of the fuel consumption increase is also small. A relatively small fuel consumption will tend to increase the relative power at that location. This self-restraining effect of fuel consumption on power distribution can be expressed using the fourth expression.

[0097] For example, as shown in Figure 7, Figure 7 is a schematic diagram of the change in quadrant power tilt (TILT) with burnup in another fuel cycle provided by an embodiment of the present application. At the beginning of the life cycle, the 7th quadrant in the lower part of the core has a maximum TILT value of approximately 2%; in the opposite quadrant, the 5th quadrant in the upper part of the core, the TILT value is minimum, approximately -2%. As the core burnup increases, the TILT value in the 7th quadrant decreases due to the high relative power of this quadrant, resulting in a large burnup increment. This large burnup causes the TILT value to continuously decrease, eventually reaching a stable value. Conversely, the 5th quadrant in the opposite quadrant has a minimum TILT value due to its low relative power, resulting in a small burnup increment. This small burnup causes the TILT value to continuously increase, eventually reaching a stable value. In other words, the aforementioned burnup has a "self-suppressing" effect on the power distribution.

[0098] S602, determining a target parameter affecting the quadrant power tilt of the core according to a first expression of a first change rate of the quadrant power tilt, including:

[0099] According to the fourth expression and the first expression, the target parameter of the burnable poison affecting the quadrant power tilt of the core is determined.

[0100] In an embodiment of the present application, the target parameters of the burnable poison affecting the quadrant power tilt of the core are determined based on the relationship between the quadrant power and the fuel consumption increment of each quadrant corresponding to the fourth expression, and the first change rate of the quadrant power tilt corresponding to the first expression.

[0101] In an embodiment of the present application, based on the relationship between the quadrant power and the fuel consumption increase of each quadrant, a fourth expression for the fourth change rate of the quadrant power tilt corresponding to each quadrant in a fuel cycle without burnable poison is determined. Based on the fourth expression and the first expression, the target parameters of the burnable poison that affects the quadrant power tilt of the core are determined. Since the target parameters are used to control the quadrant power tilt of the core, it is possible to control the increase in the quadrant power tilt.

[0102] Referring to Figure 8, Figure 8 is a flow chart illustrating another target parameter acquisition method provided in an embodiment of the present application. This embodiment relates to a possible implementation method for determining a target parameter that affects the quadrant power tilt of the core based on the fourth expression and the first expression. Based on the above embodiment, the above S602 includes the following steps:

[0103] S801: Determine the similarity between the fourth expression and the second expression.

[0104] S802 : When the similarity is greater than a preset similarity threshold, determine a target parameter according to a third expression of a third change rate of quadrant power tilt.

[0105] In an embodiment of the present application, the similarity between the fourth expression and the second expression is determined, and a similarity threshold is preset based on the similarity. If the similarity is greater than the preset similarity threshold, the fourth expression is determined to be similar to the second expression. Since the fuel consumption has a "self-suppression" function on the power distribution in the fourth expression, the second expression also has a "self-suppression" function and will not increase the quadrant power tilt. Therefore, the third expression is determined to be the main factor for the increase in the quadrant power tilt, and the target parameter is determined based on the third expression of the third change rate of the quadrant power tilt.

[0106] In an embodiment of the present application, the similarity between the fourth expression and the second expression is determined. When the similarity is greater than a preset similarity threshold, the target parameter is determined according to the third expression of the third change rate of the quadrant power tilt. Since the target parameter is used to control the quadrant power tilt of the core, it is possible to control the increase in the quadrant power tilt.

[0107] Referring to Figure 9, Figure 9 is a flow chart of another target parameter acquisition method provided by an embodiment of the present application. Based on the above embodiment, the method includes the following steps:

[0108] S901, for each quadrant, determine the product result corresponding to the mth burnable poison component in the quadrant; the product result is the product of the power of the burnable poison component containing the burnable poison in the quadrant, the burnup increment, and the slope corresponding to the burnable poison component containing y roots; the slope is the slope of the curve segment in the K infinity change with burnup curve graph where the reactivity increases with increasing burnup, and m is an integer greater than or equal to 1 and less than or equal to the total number of burnable poison components in the quadrant.

[0109] For example, a graph showing the relationship between K infinity (Kinf) and burnup can be shown in FIG10 , which is a schematic diagram of a K infinity versus burnup curve provided in an embodiment of the present application. Specifically, FIG10 shows a graph showing the K infinity versus burnup curve for assemblies with a U-235 enrichment of 4.45% and containing 0, 8, 12, 16, and 24 gadolinium rods, respectively.

[0110] In the embodiment of the present application, for example, the power of the mth burnable poison component containing burnable poison in the quadrant can be P m The burnup increment can be ΔBu, and the slope of the component containing y combustible poisons can be X y Therefore, the product can be X y *ΔBu*P m .

[0111] S902: Determine a summation result according to the product result corresponding to the mth combustible poison component in the quadrant.

[0112] In the embodiment of the present application, the product results corresponding to each combustible poison component in the quadrant can be added in sequence to obtain a summation result. For example, the summation result can be ∑ m X y *ΔBu*P m , m = 1, ..., M, y = 1, ..., T. Where M is the total number of burnable poison components in the quadrant, and T is the total number of burnable poison component types in the core.

[0113] S903: Determine a second variation of the quadrant power tilt according to the summation result and the quadrant power of the quadrant.

[0114] The summation result may be divided by the quadrant power of the quadrant to obtain a quotient, which is used as the second variation of the quadrant power tilt. Alternatively, the summation result may be divided by the quadrant power of the quadrant to obtain a quotient, which is multiplied by a preset coefficient to obtain a result of the quotient as the second variation of the quadrant power tilt.

[0115] Exemplarily, the second variation of the quadrant power tilt may be Where M is the total number of burnable poison components in the quadrant, T is the total number of burnable poison component types in the core, and P i is the quadrant power of the i-th quadrant.

[0116] S904, determining a target parameter according to a third expression of a third rate of change of quadrant power tilt, including:

[0117] Based on the slope in the third expression, the target parameter is determined.

[0118] In an embodiment of the present application, based on the first expression, the third expression and the K infinity versus burnup curve, it is determined that the slope in the third expression can be used to control the quadrant power tilt of the core, so the slope in the third expression is used as the target parameter.

[0119] In an embodiment of the present application, a product result corresponding to the type of burnable poison assembly is determined for each quadrant. The product result is the product of the power of the burnable poison assembly containing the burnable poison in the quadrant, the burnup increment, and the slope of the burnable poison assembly containing y roots. The slope is the slope of the curve in the K infinity versus burnup curve, where the reactivity increases with increasing burnup. A summation result is then determined based on the product results corresponding to each number of burnable poison assemblies. A third rate of change of the quadrant power tilt is determined based on the summation result and the quadrant power of the quadrant. A target parameter is determined based on the slope in the third expression. Since the target parameter is used to control the quadrant power tilt of the core, it is possible to control the increase in quadrant power tilt.

[0120] Based on the above embodiment, the above S203, controlling the quadrant power tilt of the core according to the target parameter of the burnable poison, can be achieved by the following methods:

[0121] If the target parameter is greater than the first preset parameter, the use of burnable poison is prohibited to control the quadrant power tilt of the core.

[0122] If the target parameter is less than the second preset parameter, the amount of burnable poison used is controlled to control the quadrant power tilt of the core.

[0123] When designing the core loading plan, if the target parameter is greater than the first preset parameter, the use of burnable poisons is prohibited to control the quadrant power tilt of the core. Specifically, burnable poisons with a steeply increasing reactivity curve with increasing burnup are not used during the core loading plan design. For example, for an assembly using uranium dioxide fuel enriched with 4.45% uranium-235 and 8% gadolinium, an assembly containing 24 gadolinium rods is not used.

[0124] When designing the core loading plan, if the target parameter is less than the second preset parameter, the amount of burnable poison used is controlled to control the quadrant power tilt of the core. Specifically, when designing the core loading plan, burnable poisons with a curve that increases reactivity with increasing burnup and a small slope should be avoided as much as possible. If such burnable poisons must be used, their total number should be limited. For example, using assemblies containing 4.45% U-235 and 8% gadolinium in uranium dioxide fuel, assemblies containing 20 gadolinium rods should be avoided as much as possible. If such assemblies must be used, the number of such assemblies in the entire core should be less than or equal to 8.

[0125] In an embodiment of the present application, if the target parameter is greater than the first preset parameter, the use of burnable poison is prohibited to control the quadrant power tilt of the core; if the target parameter is less than the second preset parameter, the amount of burnable poison used is controlled to control the quadrant power tilt of the core, thereby achieving control over the increase in the quadrant power tilt.

[0126] Referring to FIG11 , FIG11 is a flow chart of a core design method for controlling quadrant power tilt increase during operation of a pressurized water reactor nuclear power plant provided by an embodiment of the present application. The method comprises the following steps:

[0127] S1101 , dividing the first change in quadrant power tilt by the fuel consumption increment to obtain a second expression for a second change rate of quadrant power tilt.

[0128] S1102 , dividing the second change in quadrant power tilt by the fuel consumption increment to obtain a third expression for a third change rate of quadrant power tilt.

[0129] S1103: Add the second expression and the third expression to obtain a first expression.

[0130] S1104: Determine a fourth expression for a fourth change rate of the quadrant power gradient corresponding to each quadrant in a fuel cycle without burnable poison based on the relationship between the quadrant power and the fuel consumption increment of each quadrant.

[0131] S1105: Determine the similarity between the fourth expression and the second expression.

[0132] S1106: When the similarity is greater than a preset similarity threshold, the slope in the third expression is used as a target parameter.

[0133] S1107, controlling the quadrant power tilt of the core based on the target parameters.

[0134] 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.

[0135] Based on the same inventive concept, embodiments of the present application also provide a core quadrant power tilt control device for implementing the aforementioned core quadrant power tilt control 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 core quadrant power tilt control device provided below can be found in the aforementioned limitations of the core quadrant power tilt control method and will not be further elaborated here.

[0136] In one embodiment, as shown in FIG12 , FIG12 is a structural block diagram of a quadrant power tilt control of a core provided by an embodiment of the present application. The device 1200 includes:

[0137] The first determination module 1201 is used to determine a first expression for a first change rate of the quadrant power tilt corresponding to each quadrant in a fuel cycle containing burnable poison based on a first change in the quadrant power tilt caused by fuel combustion in each quadrant of the core in a fuel cycle containing burnable poison, a second change in the quadrant power tilt caused by combustion of the burnable poison, and a burnup increment of the core.

[0138] The second determining module 1202 is configured to determine a target parameter of a burnable poison that affects the quadrant power tilt of the core according to a first expression of a first change rate of the quadrant power tilt.

[0139] The control module 1203 is used to control the quadrant power tilt of the core according to the target parameters of the burnable poison.

[0140] In one embodiment, the first determining module 1201 includes:

[0141] The first calculation unit is used to divide the first change amount of the quadrant power tilt by the fuel consumption increase to obtain a second expression for a second change rate of the quadrant power tilt.

[0142] The second calculation unit is used to divide the second change amount of the quadrant power tilt by the fuel consumption increase to obtain a third expression of a third change rate of the quadrant power tilt.

[0143] The first determining unit is configured to determine the first expression according to the second expression and the third expression.

[0144] In one embodiment, the first determining unit is specifically configured to add the second expression and the third expression to obtain the first expression.

[0145] In one embodiment, the apparatus 1200 further includes:

[0146] The third determining module is used to determine a fourth expression of a fourth change rate of the quadrant power tilt corresponding to each quadrant in a fuel cycle without burnable poisons based on the relationship between the quadrant power and the fuel consumption increment of each quadrant.

[0147] Accordingly, the second determining module 1202 is specifically configured to determine the target parameter of the burnable poison that affects the quadrant power tilt of the core according to the fourth expression and the first expression.

[0148] In one embodiment, the second determining module 1202 includes:

[0149] a second determining unit, configured to determine a similarity between the fourth expression and the second expression;

[0150] The third determining unit is configured to determine the target parameter according to a third expression of a third change rate of the quadrant power tilt when the similarity is greater than a preset similarity threshold.

[0151] In one embodiment, the apparatus 1200 further includes:

[0152] The fourth determination module is used to determine, for each quadrant, a product result corresponding to the mth burnable poison component in the quadrant; the product result is the product of the power of the burnable poison component containing the burnable poison in the quadrant, the burnup increment, and the slope corresponding to the burnable poison component containing y roots; the slope is the slope of the curve segment in the K infinity versus burnup curve graph where the reactivity increases with increasing burnup, and m is an integer greater than or equal to 1 and less than or equal to the total number of burnable poison components in the quadrant.

[0153] The fifth determining module is used to determine the summation result according to the product result corresponding to the mth combustible poison component in the quadrant.

[0154] The sixth determining module is configured to determine a second variation of the quadrant power tilt according to the summation result and the quadrant power of the quadrant.

[0155] Correspondingly, the third determining unit is specifically configured to determine the target parameter according to the slope in the third expression.

[0156] In one embodiment, the control module 1203 is specifically configured to prohibit the use of burnable poison to control the quadrant power tilt of the core if the target parameter is greater than a first preset parameter; and to control the amount of burnable poison used to control the quadrant power tilt of the core if the target parameter is less than a second preset parameter.

[0157] Each module in the quadrant power tilt control device for the core can be implemented in whole or in part through software, hardware, or a combination thereof. Each module can be embedded in or independent of a processor in a computer device in hardware form, or stored in a computer device memory in software form, so that the processor can call and execute the corresponding operations of each module.

[0158] 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:

[0159] Determining a first expression for a first rate of change of the quadrant power tilt corresponding to each quadrant in the fuel cycle containing burnable poison based on a first change in the quadrant power tilt caused by fuel combustion in each quadrant of the reactor core in the fuel cycle containing burnable poison, a second change in the quadrant power tilt caused by the combustion of the burnable poison, and a burnup increment of the reactor core;

[0160] determining a target parameter of a burnable poison affecting the quadrant power tilt of the reactor core according to a first expression for a first rate of change of the quadrant power tilt;

[0161] The quadrant power tilt of the core is controlled according to the target parameters of the burnable poison.

[0162] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0163] Dividing the first change in quadrant power tilt by the fuel consumption increment yields a second expression for a second rate of change in quadrant power tilt.

[0164] Dividing the second change in quadrant power tilt by the fuel consumption increment yields a third expression for a third rate of change in quadrant power tilt.

[0165] The first expression is determined based on the second expression and the third expression.

[0166] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0167] Add the second expression to the third expression to get the first expression.

[0168] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0169] Determine, based on the relationship between the quadrant power and the fuel consumption increment of each quadrant, a fourth expression for a fourth rate of change of the quadrant power gradient corresponding to each quadrant in a fuel cycle free of burnable poisons;

[0170] Determining a target parameter affecting the quadrant power tilt of the core according to a first expression of a first rate of change of the quadrant power tilt includes:

[0171] According to the fourth expression and the first expression, the target parameter of the burnable poison affecting the quadrant power tilt of the core is determined.

[0172] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0173] determining a similarity between the fourth expression and the second expression;

[0174] When the similarity is greater than a preset similarity threshold, the target parameter is determined according to a third expression of a third change rate of the quadrant power tilt.

[0175] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0176] For each quadrant, determine a product corresponding to the mth burnable poison assembly in the quadrant; the product being the product of the power, burnup increment, and slope corresponding to the y burnable poison assemblies in the quadrant containing the burnable poison; the slope being the slope of the curve segment in the K infinity versus burnup graph where reactivity increases with increasing burnup, where m is an integer greater than or equal to 1 and less than or equal to the total number of burnable poison assemblies in the quadrant;

[0177] Determine the summation result based on the product result corresponding to the mth burnable poison component in the quadrant;

[0178] determining a second change in quadrant power tilt according to the summation result and the quadrant power of the quadrant;

[0179] Determining the target parameter according to a third expression of a third rate of change of quadrant power tilt includes:

[0180] Based on the slope in the third expression, the target parameter is determined.

[0181] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0182] If the target parameter is greater than the first preset parameter, the use of burnable poison is prohibited to control the quadrant power tilt of the core;

[0183] If the target parameter is less than the second preset parameter, the amount of burnable poison used is controlled to control the quadrant power tilt of the core.

[0184] 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:

[0185] Determining a first expression for a first rate of change of the quadrant power tilt corresponding to each quadrant in the fuel cycle containing burnable poison based on a first change in the quadrant power tilt caused by fuel combustion in each quadrant of the reactor core in the fuel cycle containing burnable poison, a second change in the quadrant power tilt caused by the combustion of the burnable poison, and a burnup increment of the reactor core;

[0186] determining a target parameter of a burnable poison affecting the quadrant power tilt of the reactor core according to a first expression for a first rate of change of the quadrant power tilt;

[0187] The quadrant power tilt of the core is controlled according to the target parameters of the burnable poison.

[0188] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:

[0189] Dividing the first change in quadrant power tilt by the fuel consumption increment yields a second expression for a second rate of change in quadrant power tilt.

[0190] Dividing the second change in quadrant power tilt by the fuel consumption increment yields a third expression for a third rate of change in quadrant power tilt.

[0191] The first expression is determined based on the second expression and the third expression.

[0192] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:

[0193] Add the second expression to the third expression to get the first expression.

[0194] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:

[0195] Determine, based on the relationship between the quadrant power and the fuel consumption increment of each quadrant, a fourth expression for a fourth rate of change of the quadrant power gradient corresponding to each quadrant in a fuel cycle free of burnable poisons;

[0196] Determining a target parameter affecting the quadrant power tilt of the core according to a first expression of a first rate of change of the quadrant power tilt includes:

[0197] According to the fourth expression and the first expression, the target parameter of the burnable poison affecting the quadrant power tilt of the core is determined.

[0198] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:

[0199] determining a similarity between the fourth expression and the second expression;

[0200] When the similarity is greater than a preset similarity threshold, the target parameter is determined according to a third expression of a third change rate of the quadrant power tilt.

[0201] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:

[0202] Determine a third rate of change of the quadrant power tilt for each quadrant based on the summation result and the quadrant power of the quadrant; determine a product result corresponding to the mth burnable poison assembly in the quadrant for each quadrant; the product result being the product of the power of the burnable poison assembly containing the burnable poison in the quadrant, the burnup increment, and the slope corresponding to the y burnable poison assembly; the slope being the slope of the curve segment in the K infinity versus burnup curve graph where reactivity increases with increasing burnup, where m is an integer greater than or equal to 1 and less than or equal to the total number of burnable poison assemblies in the quadrant;

[0203] Determine the summation result based on the product result corresponding to the mth burnable poison component in the quadrant;

[0204] Determining the target parameter according to a third expression of a third rate of change of quadrant power tilt includes:

[0205] Based on the slope in the third expression, the target parameter is determined.

[0206] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:

[0207] If the target parameter is greater than the first preset parameter, the use of burnable poison is prohibited to control the quadrant power tilt of the core;

[0208] If the target parameter is less than the second preset parameter, the amount of burnable poison used is controlled to control the quadrant power tilt of the core.

[0209] 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 the present disclosure 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 each embodiment provided in this disclosure 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 each embodiment provided in this disclosure 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.

[0210] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A quadrant power tilt control method for a core, wherein: The method comprises: Determine a first expression for a first change rate of quadrant power tilt corresponding to each quadrant in the fuel cycle containing burnable poison according to a first change amount of quadrant power tilt caused by fuel combustion in each quadrant of the core in the fuel cycle containing burnable poison, a second change amount of quadrant power tilt caused by burning of burnable poison, and a burnup increment of the core; determining a target parameter of the burnable poison affecting the quadrant power tilt of the core according to a first expression for a first rate of change of the quadrant power tilt; The quadrant power tilt of the core is controlled according to the target parameter of the burnable poison.

2. The method according to claim 1, wherein: The first expression for determining the first change rate of the quadrant power tilt corresponding to each quadrant in the fuel cycle containing burnable poison according to the first change amount of the quadrant power tilt caused by the combustion of fuel in each quadrant of the core in the fuel cycle containing burnable poison, the second change amount of the quadrant power tilt caused by the combustion of burnable poison, and the burnup increment of the core includes: Dividing the first change amount of the quadrant power tilt by the fuel consumption increment to obtain a second expression of a second change rate of the quadrant power tilt; Dividing the second change amount of the quadrant power tilt by the fuel consumption increment to obtain a third expression of a third change rate of the quadrant power tilt; The first expression is determined based on the second expression and the third expression.

3. The method according to claim 2, wherein: The determining the first expression according to the second expression and the third expression comprises: The first expression is obtained by adding the second expression to the third expression.

4. The method according to claim 2 or 3, wherein: The method further comprises: Determine, according to the relationship between the quadrant power of each quadrant and the fuel consumption increment, a fourth expression of a fourth change rate of the quadrant power inclination corresponding to each quadrant in a fuel cycle without burnable poison; Determining a target parameter affecting the quadrant power tilt of the core according to a first expression of a first change rate of the quadrant power tilt comprises: According to the fourth expression and the first expression, the target parameter of the burnable poison affecting the quadrant power tilt of the core is determined.

5. The method according to claim 4, wherein: The step of determining the target parameter of the burnable poison affecting the quadrant power tilt of the core according to the fourth expression and the first expression includes: determining a similarity between the fourth expression and the second expression; In a case where the similarity is greater than a preset similarity threshold, the target parameter is determined according to a third expression of a third change rate of the quadrant power tilt.

6. The method according to claim 5, wherein: The method further comprises: For each of the quadrants, determine the product result corresponding to the mth burnable poison component in the quadrant; the product result is the product of the power of the burnable poison component containing the burnable poison in the quadrant, the burnup increment, and the slope corresponding to the burnable poison component containing y roots; the slope is the slope of the curve segment in which the reactivity increases with the increase of burnup in the K infinity change with burnup curve graph, and m is an integer greater than or equal to 1 and less than or equal to the total number of burnable poison components in the quadrant; Determining a summation result according to the product result corresponding to the mth burnable poison component in the quadrant; Determine a second change amount of the quadrant power tilt according to the summation result and the quadrant power of the quadrant; The determining the target parameter according to a third expression of a third rate of change of the quadrant power tilt comprises: The target parameter is determined according to the slope in the third expression.

7. The method according to any one of claims 1 to 3, wherein: The controlling the quadrant power tilt of the core according to the target parameter of the burnable poison comprises: If the target parameter is greater than a first preset parameter, prohibiting the use of the burnable poison to control the quadrant power tilt of the core; If the target parameter is less than a second preset parameter, the amount of the burnable poison used is controlled to control the quadrant power tilt of the core.

8. A quadrant power tilt control device for a core, wherein: The device comprises: A first determination module is used to determine a first expression for a first change rate of the quadrant power tilt corresponding to each quadrant in the fuel cycle containing burnable poison according to a first change amount of the quadrant power tilt caused by fuel combustion in each quadrant of the core in the fuel cycle containing burnable poison, a second change amount of the quadrant power tilt caused by the combustion of the burnable poison, and a burnup increment of the core; A second determination module is used to determine a target parameter of the burnable poison affecting the quadrant power tilt of the core according to a first expression of a first change rate of the quadrant power tilt; A control module is used to control the quadrant power tilt of the core according to the target parameters of the burnable poison.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, wherein: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.

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