An optimization method and product for nuclear power plant operation diagrams

Abstract

This application provides a method and product for optimizing a nuclear power plant operation diagram. The method includes: obtaining the operating parameters corresponding to each boundary in the nuclear power plant operation diagram; for each boundary, determining the minimum margin of each core parameter of the nuclear power plant core at the boundary based on the corresponding operating parameters; adjusting the boundary position along the target direction when the difference between the target margin and the margin threshold exceeds a preset range, and there is room for adjustment at the endpoint position of the boundary in the target direction; the target margin is the minimum value of the minimum margin of each core parameter; updating the endpoint position of each boundary according to the position change of each boundary; updating the nuclear power plant operation diagram based on the endpoint position of each boundary. The above steps are repeated until the difference between the target margin and the margin threshold corresponding to each boundary is within a preset range, resulting in the final nuclear power plant operation diagram. The operation diagram obtained by this application can provide the maximum operating range for the core while ensuring the safe operation of the core.

Description

Technical Field

[0001] This application relates to the field of nuclear technology, specifically to a method and product for optimizing nuclear power plant operation diagrams. Background Technology

[0002] The nuclear power plant operation diagram is one of the main bases for nuclear power plant operators to control the reactor. The boundaries of the nuclear power plant operation diagram are connected end to end to form a closed area, which represents the safe operating range of the nuclear power plant core. At present, when designing nuclear power plant operation diagrams, most only consider the operational safety of the core, while ignoring the core's operating range. This results in operation diagrams that can ensure the safe operation of the core, but do not provide the maximum operating range for the core.

[0003] How to ensure the safe operation of the reactor core while providing the maximum operating range for the core has become an urgent problem to be solved. Summary of the Invention

[0004] The main objective of this application is to propose a method and product for optimizing nuclear power plant operation diagrams, which aims to provide the maximum operating range for the reactor core while ensuring its safe operation.

[0005] This application provides a method for optimizing a nuclear power plant operation diagram, comprising: obtaining operating condition parameters corresponding to each boundary in the nuclear power plant operation diagram; wherein, the operating condition parameters corresponding to each boundary are related to the position of each boundary; each boundary is connected end-to-end through its endpoints to form a closed region, the closed region representing the safe operating range of the nuclear power plant core; for each boundary, determining the minimum margin of each core parameter of the nuclear power plant core at the boundary based on the operating condition parameters corresponding to the boundary; and when the difference between the target margin and the margin threshold exceeds a preset range, and there is adjustment space at the endpoint positions of the boundary in the target direction. In the case of [missing information], the boundary is adjusted along the target direction; the target margin is the minimum value of the minimum margin of each core parameter; the target direction is determined based on the relationship between the target margin and the margin threshold; the endpoint positions of each boundary are updated according to the position changes of each boundary; the nuclear power plant operation diagram is updated based on the endpoint positions of each boundary, and the process returns to the step of obtaining the operating parameters corresponding to each boundary in the nuclear power plant operation diagram, until the difference between the target margin and the margin threshold corresponding to each boundary is within the preset range, thus obtaining the final nuclear power plant operation diagram.

[0006] In one embodiment, when the target margin is greater than the margin threshold, the target direction is the direction away from the closed region; when the target margin is less than the margin threshold, the target direction is the direction towards the closed region.

[0007] In one embodiment, adjusting the position of the boundary along the target direction includes: determining a first distance based on the difference between the target margin and the margin threshold; determining a second distance based on the adjustment space; the second distance representing the maximum translation distance of the boundary in the target direction within the adjustment space; translating the boundary along the target direction by a target distance; the target distance being the smaller of the first distance and the second distance.

[0008] In one embodiment, updating the endpoint positions of each boundary according to the position changes of each boundary includes: when the position of the first boundary changes, the position of the second boundary changes, and the positions of the endpoints in the first endpoint pair associated with the first boundary and the second boundary are different, determining the endpoint whose position in the first endpoint pair is closer to the reference point of the closed region as the target endpoint, and updating the position of the other endpoint in the first endpoint pair to the position of the target endpoint; wherein, the first endpoint pair includes a first endpoint and a second endpoint, the first endpoint is an endpoint of the first boundary, the second endpoint is an endpoint of the second boundary, and the positions of the first endpoint and the second endpoint are the same before the position of the first boundary is adjusted.

[0009] In one embodiment, updating the endpoint positions of each boundary according to the position changes of each boundary includes: when the position of the first boundary changes, the position of the second boundary does not change, and the positions of the endpoints in the first endpoint pair associated with the first boundary and the second boundary are different, updating the positions of the endpoints in the first endpoint pair to the position of the first target intersection point; the first target intersection point is the intersection point of the first boundary and the second boundary; wherein, the first endpoint pair includes a first endpoint and a second endpoint, the first endpoint is an endpoint of the first boundary, the second endpoint is an endpoint of the second boundary, and before the position of the first boundary is adjusted, the positions of the first endpoint and the second endpoint are the same.

[0010] In one embodiment, after updating the positions of each endpoint in the first endpoint pair to the position of the first target intersection point, the optimization method further includes: updating the positions of each endpoint in the first endpoint pair to a second target intersection point of the first boundary and the second boundary when the position of the target endpoint is closer to the reference point of the closed region relative to the position of the first target intersection point; the second target intersection point is the intersection point of a straight line passing through the target endpoint and parallel to the first boundary and the second boundary; wherein, the target endpoint is the endpoint selected under the target condition whose position in the second endpoint pair is closer to the reference point of the closed region; the second endpoint pair is an endpoint pair associated with the first boundary and the third boundary, including a third endpoint and a fourth endpoint, wherein the third endpoint is another endpoint of the first boundary and the fourth endpoint is one endpoint of the third boundary; the target condition is that the position of the third boundary changes and the positions of the third endpoint and the fourth endpoint are different; before the positions of the first boundary and the third boundary change, the positions of the third endpoint and the fourth endpoint are the same.

[0011] This application embodiment also provides an optimization system for a nuclear power plant operation diagram, including an acquisition module, a determination module, an adjustment module, a first update module, and a second update module. The acquisition module acquires the operating parameters corresponding to each boundary in the nuclear power plant operation diagram. The operating parameters corresponding to each boundary are related to the position of each boundary. Each boundary is connected end-to-end to form a closed region, which represents the safe operating range of the nuclear power plant core. The determination module, for each boundary, determines the minimum margin of each core parameter of the nuclear power plant core at that boundary based on the operating parameters corresponding to the boundary. The adjustment module is used when the difference between the target margin and the margin threshold exceeds a preset range, and the boundary... If there is room for adjustment of the endpoint position in the target direction, the boundary is adjusted along the target direction; the target margin is the minimum value of the minimum margin of each core parameter; the target direction is determined based on the relationship between the target margin and the margin threshold; the first update module is used to update the endpoint position of each boundary according to the position change of each boundary; the second update module is used to update the nuclear power plant operation diagram based on the endpoint position of each boundary, and return to the step of obtaining the operating condition parameters corresponding to each boundary in the nuclear power plant operation diagram, until the difference between the target margin and the margin threshold corresponding to each boundary is within the preset range, and the final nuclear power plant operation diagram is obtained.

[0012] This application also provides an electronic device, which includes a memory and a processor. The memory stores a computer program, and the processor executes the computer program to implement the optimization method described above.

[0013] This application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the above-described optimization method.

[0014] This application also provides a computer program product, which is stored in a storage medium and implements the optimization method described above when executed by at least one processor.

[0015] This application provides a method and product for optimizing a nuclear power plant operation diagram. For each boundary of the nuclear power plant operation diagram, when the difference between its corresponding target margin and margin threshold exceeds a preset range, and there is room for adjustment of its endpoint position in the target direction, the position is continuously adjusted. This can eventually adjust the minimum margin corresponding to each boundary to the same range, so that the nuclear power plant operation diagram obtained by the optimization method provided in this application can provide the maximum operating range for the reactor core while ensuring the safe operation of the reactor core. Attached Figure Description

[0016] Figure 1 This is a schematic flowchart of the method for optimizing the nuclear power plant operation diagram provided in the embodiments of this application;

[0017] Figure 2 This is a schematic diagram of a nuclear power plant operation diagram provided in the embodiments of this application. Figure 1 ;

[0018] Figure 3 This is a schematic diagram of a nuclear power plant operation diagram provided in the embodiments of this application. Figure 2 ;

[0019] Figure 4 This is a schematic diagram of a nuclear power plant operation diagram provided in the embodiments of this application. Figure 3 ;

[0020] Figure 5 This is a schematic diagram of the structure of the nuclear power plant operation diagram optimization system provided in the embodiments of this application;

[0021] Figure 6 This is a schematic diagram of the structure of an embodiment of the electronic device provided in this application. Detailed Implementation

[0022] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0023] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0024] The nuclear power plant operation diagram optimization method provided in this application embodiment can be applied to a terminal, a server, or software running on either a terminal or a server. In some embodiments, the terminal can be a smartphone, tablet, laptop, desktop computer, etc.; the server can be configured as an independent physical server, a server cluster or distributed system composed of multiple physical servers, or a cloud server providing basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communication, middleware services, domain name services, security services, CDN, and big data and artificial intelligence platforms; the software can be an application that implements the nuclear power plant operation diagram optimization method, etc., but is not limited to the above forms.

[0025] The optimization method for nuclear power plant operation diagrams provided in this application will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] This application provides a method for optimizing the operation diagram of a nuclear power plant. Please refer to [link to relevant documentation]. Figure 1 Optimization methods may include:

[0027] Step S101: Obtain the operating parameters corresponding to each boundary in the nuclear power plant operation diagram; wherein, the operating parameters corresponding to each boundary are related to the position of each boundary; each boundary is connected end to end to form a closed region, and the closed region represents the safe operating range of the nuclear power plant core;

[0028] Step S102: For each boundary, determine the minimum margin of each core parameter of the nuclear power plant core at the boundary based on the operating parameters corresponding to the boundary.

[0029] Step S103: If the difference between the target margin and the margin threshold exceeds the preset range, and there is room for adjustment at the endpoints of the boundary in the target direction, the boundary is adjusted along the target direction; the target margin is the minimum value of the minimum margin of each core parameter; the target direction is determined based on the relationship between the target margin and the margin threshold.

[0030] Step S104: Update the endpoint positions of each boundary according to the position changes of each boundary;

[0031] Step S105: Based on the endpoint positions of each boundary, update the nuclear power plant operation diagram and return to the step S101 to obtain the operating parameters corresponding to each boundary in the nuclear power plant operation diagram until the difference between the target margin and the margin threshold corresponding to each boundary is within the preset range, and obtain the final nuclear power plant operation diagram.

[0032] This application provides an optimization method for nuclear power plant operation diagrams. By continuously adjusting the position of each boundary of the nuclear power plant operation diagram when the difference between its corresponding target margin and margin threshold exceeds a preset range and there is room for adjustment in the target direction, the minimum margin corresponding to each boundary can be eventually adjusted to the same range. This allows the nuclear power plant operation diagram obtained by the optimization method provided in this application to provide the maximum operating range for the reactor core while ensuring its safe operation.

[0033] Optionally, the operating parameters in step S101 above include the axial power deviation and relative power of the nuclear power plant core. For each boundary, the corresponding operating parameters may include the axial power deviation and relative power of the nuclear power plant core at each point on that boundary.

[0034] The axial power deviation can be determined by formula (1):

[0035]

[0036] The relative power can be determined by formula (2):

[0037]

[0038] Where ΔI is the axial power deviation of the nuclear power plant core, Pr is the relative power of the nuclear power plant core, and P H For the upper power of the nuclear power plant reactor core, P B For the lower power of the nuclear power plant reactor core, P n This refers to the rated power of a nuclear power plant reactor.

[0039] Optionally, the core parameters in step S102 above include deviation from the nucleus boiling ratio, linear power density, and fuel cladding temperature. For each boundary in the operation diagram, the minimum margins for deviation from the nucleus boiling ratio, linear power density, and fuel cladding temperature at that boundary can be calculated based on the axial power deviation and relative power corresponding to each point on that boundary. Furthermore, for the same boundary, the minimum value of the minimum margins for deviation from the nucleus boiling ratio, linear power density, and fuel cladding temperature at that boundary is taken as the target margin corresponding to that boundary.

[0040] Optionally, the preset range in step S103 is -E≤(Yi-S)≤E, where Yi is the target margin corresponding to the i-th boundary in the running graph, S is the margin threshold, E is the allowable deviation, and E≥0.

[0041] Optionally, for each boundary in the running diagram, the endpoint position of the boundary in step S103 includes the positions of the two endpoints in the boundary. If there is room for adjustment in the positions of the two endpoints of the boundary in the target direction, it is determined that there is room for adjustment in the target direction. If there is no room for adjustment in the position of either endpoint of the boundary in the target direction, it is determined that there is no room for adjustment in the target direction.

[0042] Optionally, for each boundary in the running graph, the target margin corresponding to the boundary is inversely proportional to the range of the closed region formed by the boundary. That is, if the boundary is moved in the direction toward the closed region, the range of the closed region will shrink, but the target margin corresponding to the boundary will increase. If the boundary is moved in the direction away from the closed region, the range of the closed region will increase, but the target margin corresponding to the boundary will decrease. Thus, the target direction corresponding to the boundary can be determined based on the relationship between the target margin corresponding to the boundary and the margin threshold.

[0043] In one embodiment, when the target margin is greater than the margin threshold, the target direction is the direction away from the closed region; when the target margin is less than the margin threshold, the target direction is the direction towards the closed region.

[0044] Specifically, for the i-th boundary, if the difference between the target margin and the margin threshold corresponding to the i-th boundary exceeds a preset range, and there is room for adjustment of the endpoint position of the i-th boundary in the target direction, then the target margin corresponding to the i-th boundary is greater than the margin threshold, which can be characterized as (Yi-S) > E. Therefore, the i-th boundary needs to be moved in the direction that reduces Yi, so that -E ≤ (Yi-S) ≤ E. Combining the relationship between the boundary movement direction and the target margin corresponding to the boundary, the target direction can be determined as the direction away from the closed region.

[0045] Furthermore, if the difference between the target margin corresponding to the i-th boundary and the margin threshold exceeds a preset range, and there is room for adjustment of the endpoint position of the i-th boundary in the target direction, then the target margin corresponding to the i-th boundary is less than the margin threshold, which can be characterized as (Yi-S) < -E. In this case, the i-th boundary needs to be moved in the direction that increases Yi so that -E ≤ (Yi-S) ≤ E. Combining the relationship between the boundary movement direction and the target margin corresponding to the boundary, the target direction can be determined as the direction towards the closed region.

[0046] In this embodiment of the application, for each boundary in the running graph, if the difference between the target margin and the margin threshold corresponding to the boundary exceeds a preset range, and there is room for adjustment of the endpoint position of the boundary in the target direction, if the target margin corresponding to the boundary is greater than the margin threshold, the direction of the boundary position adjustment is determined to be the direction away from the closed area; if the target margin corresponding to the boundary is less than the margin threshold, the direction of the boundary position adjustment is determined to be the direction towards the closed area. This can accurately determine the target direction of the boundary position adjustment, thereby improving the efficiency and accuracy of finally adjusting the minimum margin corresponding to each boundary to the same range.

[0047] Optionally, the positions of each boundary in step S101 above are the positions of each boundary in the target coordinate system. Optionally, the target coordinate system is a rectangular coordinate system with the axial power deviation of the nuclear power plant core as the first coordinate axis and the relative power of the nuclear power plant core as the second coordinate axis.

[0048] Please see Figure 2 Taking a pressurized water reactor nuclear power plant as an example, the plant's operation diagram can include seven boundaries: a2b1, b2c1, c2d1, d2e1, e2f1, f2g1, and g2a1, as well as the closed region formed by connecting these seven boundaries end to end. A Cartesian coordinate system is constructed with the relative power of the reactor core as the ordinate (i.e., the first coordinate axis mentioned above) and the axial power deviation as the abscissa (i.e., the second coordinate axis mentioned above), resulting in the target coordinate system. Based on the relative power and axial power deviation corresponding to each point on each boundary in the target coordinate system, the target margins for each boundary are obtained as follows: Y a2b1 =40.7%, Y b2c1 =15.8%, Y c2d1 =2.3%, Y d2e1 =3.4%, Y e2f1 =9.7%, Y f2g1 =18.7%, Y g2a1 =26.8%. Let S = 2.3% and E = 0.3%. By comparison, we can see that, for... Figure 2 Of the seven boundaries, only Yi = Y c2d1 When -E≤(Yi-S)≤E, only the position of boundary c2d1 does not need to be adjusted this time.

[0049] Furthermore, in the target coordinate system, the equation of boundary a2b1 is Pr = -ΔI. Each point on boundary a2b1 represents a nuclear power plant reactor whose entire power is generated from the lower part of the core. The region below boundary a2b1 is an impossible zone, although Y... a2b1>S, but since the region below boundary a2b1 is an impossible region, boundary a2b1 cannot be translated in the direction away from the closed region. That is, there is no room for adjustment of the endpoint position of boundary a2b1 in the direction away from the closed region. The equation of boundary g2a1 is Pr=ΔI. Each point on boundary g2a1 represents that all the power of the nuclear power plant reactor is generated from the upper part of the core. The region below boundary g2a1 is an impossible region, although Y g2a1 >S, but the region below the boundary g2a1 is an impossible region, so the boundary g2a1 cannot be translated in the direction away from the closed region. That is, there is no room for adjustment of the endpoint position of the boundary g2a1 in the direction away from the closed region.

[0050] Furthermore, the endpoint positions of any of the boundaries b2c1, d2e1, e2f1, and f2g1 have room for adjustment in the direction away from the closed region, due to Y b2c1 Y d2e1 Y e2f1 and Y f2g1 If all are greater than S, then the target direction for the current position adjustment of boundaries b2c1, d2e1, e2f1, and f2g1 can all be the direction away from the closed region.

[0051] In one embodiment, adjusting the position of the boundary along the target direction in step S103 includes:

[0052] The first distance is determined based on the difference between the target margin and the margin threshold;

[0053] Based on the adjustment space, a second distance is determined; the second distance characterizes the maximum translational distance of the boundary in the target direction within the adjustment space.

[0054] The boundary is shifted along the target direction by the target distance; the target distance is the smaller of the first distance and the second distance.

[0055] Optionally, the first distance can be calculated using formula (3) or formula (4):

[0056] Di=|Yi - S| (3)

[0057] Di=k |Yi - S| (4)

[0058] Where Di is the first distance corresponding to the i-th boundary, and k is the scaling factor. Optionally, k = 0.5.

[0059] Optionally, the above Y b2c1 Y d2e1 Y e2f1 and Y f2g1Substituting these values ​​into the Di calculation formula above, we obtain the first distance corresponding to boundary b2c1 as 6.75 distances, the first distance corresponding to boundary d2e1 as 0.55 distances, the first distance corresponding to boundary e2f1 as 3.7 distances, and the first distance corresponding to boundary f2g1 as 8.2 distances.

[0060] Optionally, the target direction described above is parallel to the second coordinate axis of the target coordinate system. Please continue reading. Figure 2 For any endpoint of any of the boundaries b2c1, d2e1, e2f1, and f2g1, the maximum translation distance in the horizontal direction of the target coordinate system within the adjustment space is greater than the first distance corresponding to that boundary. Therefore, the first distances corresponding to boundaries b2c1, d2e1, e2f1, and f2g1 can be determined as the target distances corresponding to boundaries b2c1, d2e1, e2f1, and f2g1, respectively. That is, the target distance corresponding to boundary b2c1 is 6.75 distances, the target distance corresponding to boundary d2e1 is 0.55 distances, the target distance corresponding to boundary e2f1 is 3.7 distances, and the target distance corresponding to boundary f2g1 is 8.2 distances.

[0061] In this embodiment of the application, for each boundary in the running graph, when the difference between the target margin and the margin threshold corresponding to the boundary exceeds a preset range, and there is adjustment space for the endpoint position of the boundary in the target direction, a first distance is determined based on the difference between the target margin corresponding to the boundary and the margin threshold, and a second distance is determined based on the adjustment space for the endpoint position of the boundary in the target direction. The smaller value between the first distance and the second distance is determined as the target distance for the boundary to be translated in the target direction. This can accurately determine the translation distance of the boundary in the target direction, thereby improving the efficiency and accuracy of finally adjusting the minimum margin corresponding to each boundary to the same range.

[0062] Please continue reading Figure 2 In the target coordinate system, the initial positions of endpoint b1 of boundary a2b1 and endpoint b2 of boundary b2c1 are the same, both being... Figure 2 The position of point b in the coordinate system is (-31.7, 31.7); the initial positions of endpoint c1 of boundary b2c1 and endpoint c2 of boundary c2d1 in the target coordinate system are the same, both being... Figure 2 The position of point c in the coordinate system is (-14.3, 100); the initial positions of endpoints d1 and d2 of boundary c2d1 and boundary d2e1 in the target coordinate system are the same, both being... Figure 2 The position of point d in the coordinate system is (9, 100); the initial positions of endpoint e1 of boundary d2e1 and endpoint e2 of boundary e2f1 in the target coordinate system are the same, both being... Figure 2The position of point e in the coordinate system is (12, 97); the initial positions of endpoints f1 and f2 of boundary e2f1 and boundary f2g1 in the target coordinate system are the same, both being... Figure 2 The position of point f in the target coordinate system is (18, 75); the initial positions of endpoint g1 of boundary f2g1 and endpoint g2 of boundary g2a1 are the same in the target coordinate system, both being... Figure 2 The position of point g in the coordinate system is (18, 18); the initial positions of endpoints a1 of boundary g2a1 and a2 of boundary a2b1 in the target coordinate system are the same, both being... Figure 2 The position of point a in the equation is (0, 0).

[0063] Specifically, endpoints b1 and b2 form an endpoint pair associated with boundary a2b1 and boundary b2c1; endpoints c1 and c2 form an endpoint pair associated with boundary b2c1 and boundary c2d1; endpoints d1 and d2 form an endpoint pair associated with boundary c2d1 and boundary d2e1; endpoints e1 and e2 form an endpoint pair associated with boundary d2e1 and boundary e2f1; endpoints f1 and f2 form an endpoint pair associated with boundary e2f1 and boundary f2g1; and endpoints g1 and g2 form an endpoint pair associated with boundary f2g1 and boundary g2a1.

[0064] Please see Figure 3Since the position of boundary c2d1 does not need to be adjusted this time, and there is no room for adjustment of the endpoints of boundaries a2b1 and g2a1 in the direction away from the closed region, boundary b2c1 is translated by 6.75 units in the direction away from the closed region and parallel to the x-coordinate of the target coordinate system (i.e., translated outwards in the direction parallel to the x-axis). After this adjustment, the endpoint b2 of boundary b2c1 is positioned at point b2' in the target coordinate system, and the endpoint c1 of boundary b2c1 is positioned at point c1'. Boundary d2e1 is translated by 0.55 units in the direction away from the closed region and parallel to the x-coordinate of the target coordinate system (i.e., translated outwards in the direction parallel to the x-axis). After this adjustment, the endpoint d2 of boundary d2e1 is positioned at point d2' in the target coordinate system, and the endpoint e1 of boundary d2e1 is positioned at point e1'. Translate boundary e2f1 by 3.7 units of distance (i.e., 3.7 units of distance outward in the direction parallel to the X-axis) in a direction away from the closed region. After this adjustment, the endpoint e2 of boundary e2f1 will be positioned at point e2' in the target coordinate system, and the endpoint f1 of boundary e2f1 will be positioned at point f1'. Translate boundary f2g1 by 8.2 units of distance (i.e., 8.2 units of distance outward in the direction parallel to the X-axis) in a direction away from the closed region. After this adjustment, the endpoint f2 of boundary f2g1 will be positioned at point f2' in the target coordinate system, and the endpoint g1 of boundary f2g1 will be positioned at point g1'.

[0065] In one embodiment, step S105 above, which updates the endpoint positions of each boundary based on the positional changes of each boundary, includes:

[0066] When the position of the first boundary changes, the position of the second boundary changes, and the positions of the endpoints of the first endpoint alignment associated with the first boundary and the second boundary are different, the endpoint of the first endpoint alignment that is closer to the reference point of the closed region is determined as the target endpoint, and the position of the other endpoint of the first endpoint alignment is updated to the position of the target endpoint.

[0067] The first endpoint pair includes a first endpoint and a second endpoint. The first endpoint is an endpoint of the first boundary, and the second endpoint is an endpoint of the second boundary. Before the position of the first boundary is adjusted, the positions of the first endpoint and the second endpoint are the same.

[0068] Optionally, the reference point of the closed region is the origin of the target coordinate system. Please refer to... Figure 3 and Figure 4After this position adjustment, the position of boundary d2e1 changes, the position of boundary e2f1 changes, and the positions of endpoints e1 and e2 in the first endpoint pair associated with boundary d2e1 and boundary e2f1 are different. Since the position of endpoint e1 after this adjustment is closer to the origin of the coordinate system, endpoint e1 can be determined as the target endpoint, and the position of endpoint e2 is updated to the position of endpoint e1 after this adjustment. That is, the position of endpoint e2 in boundary e2f1 in the target coordinate system is adjusted to the position of point e1'.

[0069] In addition, after this position adjustment, the position of boundary e2f1 changes, the position of boundary f2g1 changes, and the positions of endpoints f1 and f2 in the first endpoint pair associated with boundary e2f1 and boundary f2g1 are different. Since the adjusted position of endpoint f1 is closer to the origin of the coordinate system, endpoint f1 can be determined as the target endpoint, and the position of endpoint f2 can be updated to the adjusted position of endpoint f1. That is, the position of endpoint f2 in boundary f2g1 in the target coordinate system is adjusted to the position of point f1'.

[0070] This application embodiment addresses the first and second boundaries in the operation diagram that have associated endpoint pairs. When the position of the first boundary changes, the position of the second boundary changes, and the positions of the endpoints in the first endpoint pair associated with the first and second boundaries are different, the endpoint of the first endpoint pair that is closer to the reference point of the closed region is determined as the target endpoint, and the position of the other endpoint in the first endpoint pair is updated to the position of the target endpoint. This ensures that the operation diagram obtained based on the updated endpoint positions can guarantee the safe operation of the reactor core and expand the operating range of the reactor core.

[0071] In one embodiment, step S105 above, which updates the endpoint positions of each boundary based on the positional changes of each boundary, includes:

[0072] If the position of the first boundary changes, the position of the second boundary remains unchanged, and the positions of the endpoints of the first endpoint pair associated with the first and second boundaries are different, the positions of the endpoints of the first endpoint pair are updated to the position of the first target intersection point; the first target intersection point is the intersection point of the first boundary and the second boundary.

[0073] The first endpoint pair includes a first endpoint and a second endpoint. The first endpoint is an endpoint of the first boundary, and the second endpoint is an endpoint of the second boundary. Before the position of the first boundary is adjusted, the positions of the first endpoint and the second endpoint are the same.

[0074] Optionally, the intersection of the first boundary and the second boundary includes any one of the following: the intersection where the first boundary and the second boundary directly intersect; the intersection of the extension of either the first boundary or the second boundary with the other boundary; or the intersection of the extension of either the first boundary or the second boundary with the extension of the other boundary.

[0075] Please see Figure 3 or Figure 4 After this position adjustment, the position of boundary b2c1 changes, the position of boundary a2b1 remains unchanged, and the positions of endpoint b2 and endpoint b1 in the first endpoint pair associated with boundary b2c1 and boundary a2b1 are different. Therefore, the positions of endpoint b1 and endpoint b2 can be updated to the position of the intersection point b' of the extension line of boundary a2b1 and boundary b2c1.

[0076] In addition, after this position adjustment, the position of boundary b2c1 has changed, the position of boundary c2d1 has not changed, and the positions of endpoints c1 and c2 in the first endpoint pair associated with boundary b2c1 and boundary c2d1 are different. Since boundary b2c1 is translated outward along the X-axis, while boundary c2d1 is parallel to the X-axis, the position of the intersection of the extension line of boundary c2d1 and boundary b2c1 is the same as the adjusted position of endpoint c1 of boundary b2c1, which is the position of point c1'. Therefore, it is only necessary to update the position of endpoint c2 to the position of point c1'.

[0077] In addition, after this position adjustment, the position of boundary d2e1 has changed, the position of boundary c2d1 has not changed, and the positions of endpoints d1 and d2 in the first endpoint pair associated with boundary d2e1 and boundary c2d1 are different. Since boundary d2e1 is translated outward along the X-axis, while boundary c2d1 is parallel to the X-axis, the position of the intersection of the extension line of boundary c2d1 and boundary d2e1 is the same as the adjusted position of endpoint d2 of boundary d2e1, which is the position of point d2'. Therefore, it is only necessary to update the position of endpoint d1 to the position of point d2'.

[0078] In addition, after this position adjustment, the position of boundary f2g1 changes, the position of boundary g2a1 remains unchanged, and the positions of endpoints g1 and g2 in the first endpoint pair associated with boundary f2g1 and boundary g2a1 are different. Therefore, the positions of endpoints g1 and g2 can be updated to the position of the intersection point g' of the extension line of boundary g2a1 and boundary f2g1.

[0079] This application embodiment addresses the first and second boundaries in the operation diagram that have associated endpoint pairs. When the position of the first boundary changes, the position of the second boundary remains unchanged, and the positions of the endpoints in the associated first endpoint pairs are different, the positions of the endpoints in the first endpoint pairs are updated to the intersection of the first and second boundaries. This ensures that the operation diagram obtained based on the updated endpoint positions can guarantee the safe operation of the reactor core and expand the operating range of the reactor core.

[0080] In one embodiment, after updating the positions of each endpoint in the first endpoint pair to the position of the first target intersection point, the improved nuclear power plant operation diagram optimization method of this application embodiment further includes:

[0081] If the position of the target endpoint is closer to the reference point of the closed region than the position of the first target intersection point, the position of each endpoint of the first endpoint is updated to the second target intersection point of the first boundary and the second boundary; the second target intersection point is the intersection point of the second boundary and the line passing through the target endpoint and parallel to the first boundary.

[0082] Wherein, the target endpoint is the endpoint of the second endpoint pair selected under the target condition that is closer to the reference point of the closed region; the second endpoint pair is the endpoint pair associated with the first boundary and the third boundary, including the third endpoint and the fourth endpoint, the third endpoint being another endpoint of the first boundary and the fourth endpoint being one endpoint of the third boundary; the target condition is that the position of the third boundary changes and the positions of the third endpoint and the fourth endpoint are different; before the positions of the first boundary and the third boundary change, the positions of the third endpoint and the fourth endpoint are the same.

[0083] Please combine Figure 3 and Figure 4 After this position adjustment, if the position of boundary f2g1 changes, the position of boundary e2f1 changes, the position of boundary g2a1 remains unchanged, the positions of endpoints g1 and g2 in the first endpoint pair associated with boundary f2g1 and boundary g2a1 are different, and the positions of endpoints f1 and f2 in the second endpoint pair associated with boundary e2f1 and boundary f2g1 are different, then after updating the positions of endpoints g1 and g2 from point g to point g', the positions of endpoints g1 and g2 can be further updated from point g' to point g”. Here, point g” is the intersection of line L and boundary g2a1, and line L passes through endpoint f2 and is parallel to boundary f2g1.

[0084] This application embodiment addresses situations where there are associated first and second boundaries in the operation diagram, and associated second and third boundaries. In cases where the position of the first boundary changes, the position of the second boundary remains unchanged, the position of the third boundary changes, or the positions of the endpoints in the first and second endpoint pairs differ, after updating the positions of the endpoints in the first endpoint pair to the intersection of the first and second boundaries, the positions of the endpoints in the first endpoint pair can be further updated to the intersection of a straight line passing through the endpoint of the reference point closer to the closed region in the second endpoint pair and parallel to the first boundary, and the second boundary. This allows the operation diagram obtained based on the updated endpoint positions to further ensure the safe operation of the reactor core while expanding its operating range.

[0085] In one embodiment, step S105 above, which updates the endpoint positions of each boundary based on the positional changes of each boundary, includes:

[0086] If the position of the first boundary changes, the position of the second boundary remains unchanged, the position of the third boundary changes, the positions of the endpoints of the first endpoint alignment associated with the first and second boundaries are different, and the positions of the endpoints of the second endpoint alignment associated with the first and third boundaries are different, then the endpoint of the second endpoint alignment that is closer to the reference point of the closed region is determined as the target endpoint, and the position of the other endpoint of the second endpoint alignment is updated to the position of the target endpoint, and the positions of the endpoints of the first endpoint alignment are updated to the position of the third target intersection point; the third target intersection point is the intersection point of the target line and the second boundary; the target line is a line that passes through the target endpoint and is parallel to the first boundary.

[0087] Please combine Figure 3 and Figure 4 After this position adjustment, if the position of boundary f2g1 changes, the position of boundary e2f1 changes, the position of boundary g2a1 remains unchanged, the positions of endpoints g1 and g2 in the first endpoint pair associated with boundary f2g1 and boundary g2a1 are different, and the positions of endpoints f1 and f2 in the second endpoint pair associated with boundary e2f1 and boundary f2g1 are different, then the position of endpoint f2 in boundary f2g1 in the target coordinate system can be adjusted to point f1', and the positions of endpoints g1 and g2 can be directly updated from point g to point g”; where point g” is the intersection of line L and boundary g2a1, and line L passes through endpoint f2 and is parallel to boundary f2g1.

[0088] This application embodiment addresses situations where there are associated first endpoint pairs and second boundaries in the operation diagram, as well as associated second endpoint pairs and third boundaries. In cases where the position of the first boundary changes, the position of the second boundary remains unchanged, the position of the third boundary changes, or the positions of the endpoints in the first endpoint pairs and the positions of the endpoints in the second endpoint pairs are different, the positions of the endpoints in the first endpoint pairs can be directly updated to the position of the intersection of a straight line passing through the target endpoint and parallel to the first boundary with the first boundary. This allows the operation diagram updated based on the endpoint positions to further ensure the safe operation of the reactor core and expand the operating range of the reactor core.

[0089] The step S105 above, which updates the nuclear power plant operation diagram based on the endpoint positions of each boundary, may include: connecting the endpoints of each boundary based on the endpoint positions of each boundary to obtain the updated operation diagram.

[0090] Optionally, after this position adjustment, in the target coordinate system, point a is located at (0, 0), point b' at (-37.1, 37.1), point c1' at (-21, 100), point d2' at (9.5, 100), point e1' at (12.5, 97), point f1' at (21.7, 75), and point g” at (21.7, 21.7). Figure 4 As shown, connecting points a, c1', d2', e1', f1', and g" in the target coordinate system yields the updated running graph.

[0091] Optionally, after the position adjustment is completed, return to the above step S101 to obtain the operating condition parameters corresponding to each boundary in the nuclear power plant operation diagram until the difference between the target margin and the margin threshold corresponding to each boundary is within the preset range, and obtain the final nuclear power plant operation diagram.

[0092] Optionally, in the final running graph, the coordinates of endpoint a2 of boundary a2b1 in the target coordinate system are (0, 0), and the coordinates of endpoint b1 in the target coordinate system are (-38.2, 38.2); the coordinates of endpoint b2 in boundary b2c1 are the same as those of endpoint b1 in the target coordinate system, and the coordinates of endpoint c1 in the target coordinate system are (-22.5, 100); the coordinates of endpoint c2 in boundary c2d1 are the same as those of endpoint c1 in the target coordinate system, and the coordinates of endpoint d1 in the target coordinate system are (9.5, 100); the coordinates of endpoint d2 in boundary d2e1 are the same as those of endpoint c1 in the target coordinate system. The coordinates of d1 in the target coordinate system are the same, and the coordinates of endpoint e1 in the target coordinate system are (12.5, 97); the coordinates of endpoint e2 in the target coordinate system are the same as those of endpoint e1 in the target coordinate system, and the coordinates of endpoint f1 in the target coordinate system are (23, 75); the coordinates of endpoint f2 in the target coordinate system are the same as those of endpoint f1 in the target coordinate system, and the coordinates of endpoint g1 in the target coordinate system are (23, 23); the coordinates of endpoint g2 in the target coordinate system are the same as those of endpoint g1 in the target coordinate system, and the coordinates of endpoint a1 in the target coordinate system are (0, 0).

[0093] Please see Figure 5 This application also provides an optimization system for nuclear power plant operation diagrams, including an acquisition module, a determination module, an adjustment module, a first update module, and a second update module.

[0094] The acquisition module is used to acquire the operating parameters corresponding to each boundary in the nuclear power plant operation diagram. The operating parameters corresponding to each boundary are related to the position of each boundary. Each boundary is connected end to end to form a closed region, which represents the safe operating range of the nuclear power plant core.

[0095] The determination module is used to determine the minimum margin of each core parameter of the nuclear power plant core at the boundary based on the corresponding operating parameters of the boundary.

[0096] The adjustment module is used to adjust the position of the boundary along the target direction when the difference between the target margin and the margin threshold exceeds the preset range and there is adjustment space at the endpoint position of the boundary in the target direction; the target margin is the minimum value of the minimum margin of each core parameter; the target direction is determined based on the relationship between the target margin and the margin threshold.

[0097] The first update module is used to update the endpoint positions of each boundary according to the changes in the position of each boundary;

[0098] The second update module is used to update the nuclear power plant operation diagram based on the endpoint positions of each boundary, and return to the step of obtaining the operating condition parameters corresponding to each boundary in the nuclear power plant operation diagram until the difference between the target margin and the margin threshold corresponding to each boundary is within the preset range, thus obtaining the final nuclear power plant operation diagram.

[0099] The nuclear power plant operation diagram optimization system provided in this application embodiment can implement all the steps of the above-described nuclear power plant operation diagram optimization method embodiment and achieve the same technical effect. To avoid repetition, it will not be described again here.

[0100] Optionally, embodiments of this application also provide an electronic device, including a processor and a memory. The memory stores a program or instructions that can run on the processor. When the program or instructions are executed by the processor, they implement the various steps of the above-described optimization method embodiment for the nuclear power plant operation diagram and achieve the same technical effect. To avoid repetition, further details are omitted here. It should be noted that the electronic device in the embodiments of this application includes the aforementioned mobile electronic device and non-mobile electronic device.

[0101] Figure 6 To illustrate the hardware structure of the electronic device according to the embodiments of this application, the electronic device includes:

[0102] The processor 601 can be implemented using a general-purpose CPU (Central Processing Unit), microprocessor, application-specific integrated circuit (ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the technical solutions provided in the embodiments of this application.

[0103] The memory 602 can be implemented as a read-only memory (ROM), static storage device, dynamic storage device, or random access memory (RAM). The memory 602 can store the operating system and other application programs. When the technical solutions provided in the embodiments of this specification are implemented through software or firmware, the relevant program code is stored in the memory 602 and is called and executed by the processor 601 to execute the nuclear power plant operation diagram optimization method of the embodiments of this application.

[0104] The input / output interface 603 is used to implement information input and output;

[0105] The communication interface 604 is used to enable communication and interaction between this device and other devices. Communication can be achieved through wired means (such as USB, Ethernet cable, etc.) or wireless means (such as mobile network, WIFI, Bluetooth, etc.).

[0106] Bus 605 transmits information between various components of the device (e.g., processor 601, memory 602, input / output interface 603, and communication interface 604);

[0107] The processor 601, memory 602, input / output interface 603, and communication interface 604 are connected to each other within the device via bus 605.

[0108] The electronic device provided in this application embodiment can implement all the steps of the above-described method embodiment for optimizing the nuclear power plant operation diagram, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0109] This application also provides a computer-readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various steps of the above-described method embodiment for optimizing the nuclear power plant operation diagram and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0110] The processor is the processor in the electronic device described in the above embodiments. The computer-readable storage medium includes computer-readable storage media such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0111] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface and the processor are coupled. The processor is used to run programs or instructions to implement the various steps of the above-described nuclear power plant operation diagram optimization method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0112] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0113] This application provides a computer program product stored in a storage medium. The program product is executed by at least one processor to implement the various steps of the optimization method embodiment of the nuclear power plant operation diagram described above, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0114] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0115] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0116] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A method for optimizing the operation diagram of a nuclear power plant, characterized in that, include: Obtain the operating parameters corresponding to each boundary in the nuclear power plant operation diagram; wherein, the operating parameters corresponding to each boundary are related to the position of each boundary; each boundary is connected end to end to form a closed region, and the closed region represents the safe operating range of the nuclear power plant core; For each of the boundaries, the minimum margin of each core parameter of the nuclear power plant core at the boundary is determined based on the operating parameters corresponding to the boundary. If the difference between the target margin and the margin threshold exceeds a preset range, and there is room for adjustment at the endpoints of the boundary in the target direction, the boundary will be adjusted along the target direction; the target margin is the minimum value of the minimum margin of each core parameter; the target direction is determined based on the relationship between the target margin and the margin threshold. Update the endpoint positions of each boundary according to the position changes of each boundary; Based on the endpoint positions of each boundary, the nuclear power plant operation diagram is updated, and the process returns to the step of obtaining the operating parameters corresponding to each boundary in the nuclear power plant operation diagram, until the difference between the target margin and the margin threshold corresponding to each boundary is within the preset range, thus obtaining the final nuclear power plant operation diagram.

2. The optimization method as described in claim 1, characterized in that, If the target margin is greater than the margin threshold, the target direction is the direction away from the closed region; If the target margin is less than the margin threshold, the target direction is the direction toward the closed region.

3. The optimization method as described in claim 1, characterized in that, The step of adjusting the position of the boundary along the target direction includes: The first distance is determined based on the difference between the target margin and the margin threshold; Based on the adjustment space, a second distance is determined; the second distance characterizes the maximum translational distance of the boundary in the target direction within the adjustment space. The boundary is translated along the target direction by a target distance; the target distance is the smaller of the first distance and the second distance.

4. The optimization method as described in claim 1, characterized in that, The step of updating the endpoint positions of each boundary based on the positional changes of each boundary includes: When the position of the first boundary changes, the position of the second boundary changes, and the positions of the endpoints of the first endpoint pair associated with the first boundary and the second boundary are different, the endpoint whose position of the first endpoint pair is closer to the reference point of the closed region is determined as the target endpoint, and the position of the other endpoint of the first endpoint pair is updated to the position of the target endpoint. The first endpoint pair includes a first endpoint and a second endpoint. The first endpoint is an endpoint of the first boundary, and the second endpoint is an endpoint of the second boundary. Before the position of the first boundary is adjusted, the positions of the first endpoint and the second endpoint are the same.

5. The optimization method as described in claim 1, characterized in that, The step of updating the endpoint positions of each boundary based on the positional changes of each boundary includes: If the position of the first boundary changes, the position of the second boundary remains unchanged, and the positions of the endpoints of the first endpoint pair associated with the first and second boundaries are different, the positions of the endpoints of the first endpoint pair are updated to the position of the first target intersection point; the first target intersection point is the intersection point of the first boundary and the second boundary. The first endpoint pair includes a first endpoint and a second endpoint. The first endpoint is an endpoint of the first boundary, and the second endpoint is an endpoint of the second boundary. Before the position of the first boundary is adjusted, the positions of the first endpoint and the second endpoint are the same.

6. The optimization method as described in claim 5, characterized in that, After updating the positions of each endpoint in the first endpoint pair to the position of the first target intersection point, the optimization method further includes: If the position of the target endpoint is closer to the reference point of the closed region than the position of the first target intersection point, the position of each endpoint of the first endpoint alignment is updated to the second target intersection point of the first boundary and the second boundary; the second target intersection point is the intersection point of the second boundary and the straight line passing through the target endpoint and parallel to the first boundary. Wherein, the target endpoint is the endpoint of the second endpoint pair selected under the target condition that is closer to the reference point of the closed region; the second endpoint pair is the endpoint pair associated with the first boundary and the third boundary, including a third endpoint and a fourth endpoint, wherein the third endpoint is another endpoint of the first boundary and the fourth endpoint is one endpoint of the third boundary; the target condition is that the position of the third boundary changes and the positions of the third endpoint and the fourth endpoint are different; before the positions of the first boundary and the third boundary change, the positions of the third endpoint and the fourth endpoint are the same.

7. An optimization system for nuclear power plant operation diagrams, characterized in that, It includes an acquisition module, a determination module, an adjustment module, a first update module, and a second update module; The acquisition module is used to acquire the operating condition parameters corresponding to each boundary in the nuclear power plant operation diagram. The operating condition parameters corresponding to each boundary are related to the position of each boundary. Each of the aforementioned boundaries is connected end-to-end through its endpoints to form a closed region, which represents the safe operating range of the nuclear power plant core. The determining module is used to determine, for each boundary, the minimum margin of each core parameter of the nuclear power plant core at the boundary based on the operating condition parameters corresponding to the boundary. The adjustment module is used to adjust the position of the boundary along the target direction when the difference between the target margin and the margin threshold exceeds a preset range, and there is adjustment space at the endpoint position of the boundary in the target direction. The target margin is the minimum value of the minimum margin of each core parameter; The target direction is determined based on the relationship between the target margin and the margin threshold; The first update module is used to update the endpoint positions of each boundary according to the position changes of each boundary; The second update module is used to update the nuclear power plant operation diagram based on the endpoint positions of each boundary, and return to the step of obtaining the operating parameters corresponding to each boundary in the nuclear power plant operation diagram until the difference between the target margin and the margin threshold corresponding to each boundary is within the preset range, so as to obtain the final nuclear power plant operation diagram.

8. An electronic device, characterized in that, The electronic device includes a memory and a processor, the memory storing a computer program, and the processor executing the computer program to implement the method for optimizing the nuclear power plant operation diagram as described in any one of claims 1 to 6.

9. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by the processor, it implements the method for optimizing the nuclear power plant operation diagram as described in any one of claims 1 to 6.

10. A computer program product, characterized in that, The computer program product is stored in a storage medium, and when executed by at least one processor, the computer program product implements the method for optimizing the nuclear power plant operation diagram as described in any one of claims 1 to 6.

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