Nuclear power plant spare parts taking resource value prediction method, device, equipment and storage medium

Abstract

This application relates to a method, apparatus, equipment, and storage medium for predicting spare parts requisition resource values ​​for nuclear power plants. The method includes: determining the planned spare parts requisition resource value for a target time period based on the nuclear power plant's predicted maintenance plan; determining the emergency spare parts requisition resource value for the target time period based on the correspondence between the nuclear power plant's historical emergency requisition resource values ​​and maintenance durations; determining the unit planned spare parts requisition resource value for the target time period based on the unit production plan; determining the unit emergency spare parts requisition resource value for the target time period based on the nuclear power plant's historical average annual emergency spare parts requisition resource value; and obtaining the predicted spare parts requisition resource value for the target time period based on the planned spare parts requisition resource value, the emergency spare parts requisition resource value, the unit planned spare parts requisition resource value, and the unit emergency spare parts requisition resource value. This method can improve the accuracy of predicting monthly spare parts requisition resource values ​​for nuclear power plants.

Description

Technical Field

[0001] This application relates to the field of nuclear power plant spare parts technology, and in particular to a method, apparatus, equipment, and storage medium for predicting the resource value of nuclear power plant spare parts requisition. Background Technology

[0002] Spare parts are essential for the safe operation of nuclear power plants, thus requiring proper management of spare parts inventory. Predicting the resource consumption of spare parts can enable refined management of spare parts inventory.

[0003] Traditional technologies primarily rely on historical maintenance and requisition data and annual routine maintenance and requisition data to make rough predictions about the annual spare parts requisition resource value of nuclear power plants.

[0004] However, traditional technologies have the problem of not being able to accurately predict the monthly spare parts requisition value of nuclear power plants. Summary of the Invention

[0005] Therefore, it is necessary to provide a method, apparatus, equipment, and storage medium for predicting the monthly spare parts requisition resource value of nuclear power plants, which can improve the accuracy of predicting the monthly spare parts requisition resource value of nuclear power plants, in response to the above-mentioned technical problems.

[0006] Firstly, this application provides a method for predicting the resource value of spare parts requisition for nuclear power plants. The method includes:

[0007] Identify the maintenance plan corresponding to the target time period from the nuclear power plant's predicted maintenance plan, and determine the planned spare parts requisition resource value corresponding to the target time period based on the maintenance plan;

[0008] Based on the correspondence between the historical emergency resource requisition values ​​and maintenance durations of the nuclear power plant, the emergency spare parts requisition value corresponding to the target time period is determined;

[0009] Obtain the unit production plan of the nuclear power plant, and determine the unit planned spare parts requisition resource value corresponding to the target time period based on the unit production plan;

[0010] Based on the historical average annual resource consumption value of emergency spare parts for the nuclear power plant, determine the unit emergency spare parts consumption value for the target time period.

[0011] Based on the planned spare parts requisition resource value, the emergency spare parts requisition resource value, the unit's planned spare parts requisition resource value, and the unit's emergency spare parts requisition resource value, obtain the predicted spare parts requisition resource value corresponding to the target time period.

[0012] In one embodiment, determining the planned spare parts requisition resource value corresponding to the target time period according to the maintenance plan includes:

[0013] Extract the maintenance items corresponding to the maintenance plan from the maintenance plan;

[0014] Based on the standard resource package of the maintenance project, determine the quantity of spare parts required for the maintenance plan corresponding to the target time period; the standard resource package includes the quantity and type of spare parts required for the maintenance project.

[0015] Based on the quantity of the spare parts and the unit resource value of the spare parts, the planned resource requisition value corresponding to the target time period is determined.

[0016] In one embodiment, the spare parts include a first spare part and a second spare part. Determining the number of spare parts required for the maintenance plan corresponding to the target time period based on the standard resource package of the maintenance project includes:

[0017] Based on the standard resource package, determine the quantity of the first spare parts required for the maintenance plan corresponding to the target time period;

[0018] Based on the standard resource package, determine the quantity of the second spare parts required for the maintenance plan corresponding to the target time period;

[0019] The sum of the first spare parts quantity and the second spare parts quantity is determined as the spare parts quantity required for the maintenance plan corresponding to the target time period.

[0020] In one embodiment, the method further includes:

[0021] Linear fitting was performed on the resource values ​​for emergency maintenance of nuclear power plants in historical annual and ten-year maintenance, as well as the maintenance duration, to obtain the correspondence between the resource values ​​for emergency maintenance of nuclear power plants in historical maintenance and the maintenance duration.

[0022] In one embodiment, the method further includes:

[0023] Based on the nuclear power plant's preventive maintenance program documents, periodic test and supervision program documents, and in-service inspection program documents, the unit's production plan is obtained.

[0024] In one embodiment, determining the unit emergency spare parts requisition resource value for the target time period based on the historical average annual requisition resource value of the nuclear power plant's emergency spare parts includes:

[0025] According to the formula P=K*(a) n-1 *p n-1 +a n-2 *p n-2 +an-3 *p n-3 The formula is used to determine the emergency spare parts requisition value per unit unit corresponding to the year in which the target time period falls; where p is the emergency spare parts requisition value per unit unit corresponding to the year in which the target time period falls, K is the number of units in the nuclear power plant, and p n-1 p represents the average annual emergency spare parts requisition value per unit of a nuclear power plant during the first time period. n-2 p represents the average annual emergency spare parts requisition value per unit of the nuclear power plant during the second time period. n-3 a represents the average annual emergency spare parts consumption per unit of the nuclear power plant during the third time period. n-1 a n-2 a n-3 Let a be the weight parameter. n-1 +a n-2 +a n-3 =1, a n-1 a n-2 a n-3 All are positive numbers; the third time period is earlier than the second time period, the second time period is earlier than the first time period, and the first time period is earlier than the target time period;

[0026] The unit's emergency spare parts requisition value for the target time period is determined based on the unit's emergency spare parts requisition resource value for the year corresponding to the target time period, the proportion of non-major maintenance time for the target time period, and the proportion of major maintenance time for the target time period.

[0027] Secondly, this application also provides a device for predicting the resource value of spare parts requisition for nuclear power plants. The device includes:

[0028] The first determining module is used to identify the maintenance plan corresponding to the target time period from the predicted maintenance plan of the nuclear power plant, and determine the planned spare parts requisition resource value corresponding to the target time period based on the maintenance plan;

[0029] The second determining module is used to determine the emergency spare parts requisition value corresponding to the target time period based on the correspondence between the historical emergency spare parts requisition resource value and maintenance duration of the nuclear power plant.

[0030] The third determining module is used to obtain the unit production plan of the nuclear power plant and determine the unit planned spare parts requisition resource value corresponding to the target time period based on the unit production plan.

[0031] The fourth determining module is used to determine the unit emergency spare parts requisition resource value for the target time period based on the historical annual average spare parts requisition resource value of the nuclear power plant.

[0032] The acquisition module is used to acquire the predicted spare parts requisition value corresponding to the target time period based on the planned spare parts requisition resource value, the sudden spare parts requisition resource value, the unit's planned spare parts requisition resource value, and the unit's sudden spare parts requisition resource value.

[0033] Thirdly, this application also provides a computer device. The computer device includes a memory and a processor, the memory storing a computer program, and the processor executing the computer program to implement the steps of the method described in any embodiment of the first aspect.

[0034] Fourthly, this application also provides a computer-readable storage medium. The computer-readable storage medium stores a computer program thereon, which, when executed by a processor, implements the steps of the method described in any embodiment of the first aspect.

[0035] Fifthly, this application also provides a computer program product. The computer program product includes a computer program that, when executed by a processor, implements the steps of the method described in any embodiment of the first aspect above.

[0036] The aforementioned method, apparatus, equipment, and storage medium for predicting spare parts requisition resource values ​​for nuclear power plants can determine the planned spare parts requisition resource value for the target time period by identifying the maintenance plan corresponding to the target time period from the nuclear power plant's predicted maintenance plan; it can also determine the emergency spare parts requisition resource value for the target time period based on the correspondence between the nuclear power plant's historical emergency spare parts requisition resource values ​​and maintenance durations; it can determine the unit planned spare parts requisition resource value for the target time period by obtaining the nuclear power plant's unit production plan; and it can determine the unit planned spare parts requisition resource value for the target time period based on the nuclear power plant's historical annual average emergency spare parts requisition resource value. The resource requisition value can determine the unit emergency spare parts requisition value for a target time period. Therefore, based on the planned spare parts requisition value, emergency spare parts requisition value, unit planned spare parts requisition value, and unit emergency spare parts requisition value for the target time period, the predicted spare parts requisition value for the target time period can be obtained. Compared with traditional technologies that can only determine the annual spare parts requisition value based on historical maintenance spare parts requisition value and unit maintenance spare parts requisition value, this application considers multiple factors that determine the monthly requisition value, and can accurately predict the monthly spare parts requisition value for nuclear power plants. Attached Figure Description

[0037] Figure 1 This is a diagram illustrating the application environment of a nuclear power plant spare parts requisition resource value prediction method in one embodiment.

[0038] Figure 2 This is a flowchart illustrating a method for predicting the resource value of spare parts requisition in a nuclear power plant, as shown in one embodiment.

[0039] Figure 3 This is a flowchart illustrating a method for predicting the resource value of spare parts requisition in a nuclear power plant, as described in another embodiment.

[0040] Figure 4 This is a schematic diagram showing the distribution of spare parts requisition resource values ​​for annual and decennial overhauls of a nuclear power plant on different commencement dates in one embodiment.

[0041] Figure 5 This is a flowchart illustrating a method for predicting the resource value of spare parts requisition in a nuclear power plant, as described in another embodiment.

[0042] Figure 6 This is a schematic diagram illustrating the correspondence between the historical emergency maintenance spare parts requisition value and maintenance duration of a nuclear power plant in one embodiment.

[0043] Figure 7 This is a structural block diagram of a nuclear power plant spare parts requisition resource value prediction device in one embodiment;

[0044] Figure 8 This is a structural block diagram of a nuclear power plant spare parts requisition resource value prediction device in another embodiment. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0046] The method for predicting the resource value of spare parts requisition for nuclear power plants provided in this application embodiment can be applied to, for example, Figure 1 The application environment shown. Figure 1 A computer device is provided, which may be a server, and its internal structure diagram may be as follows: Figure 1 As shown, the computer device includes a processor, memory, and a network interface connected via a system bus. The processor provides computing and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores an operating system, computer programs, and a database. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The database stores data involved in the method for determining interface components. The network interface communicates with external terminals via a network connection. When executed by the processor, the computer program implements a method for predicting the resource value of spare parts requisition in a nuclear power plant.

[0047] In one embodiment, such as Figure 2As shown, a method for predicting the resource value of spare parts requisition in nuclear power plants is provided, and this method is applied to... Figure 1 Taking a computer device as an example, the explanation includes the following steps:

[0048] S201 identifies the maintenance plan corresponding to the target time period from the nuclear power plant's predicted maintenance plan and determines the planned spare parts requisition resource value for the target time period based on the maintenance plan.

[0049] The predicted maintenance plan is a ten-year preventive maintenance outline for the nuclear power plant, covering ten refueling cycles. This ten-year preventive maintenance outline is shown in Table 1. Table 1 includes the maintenance cycle of maintenance items, the execution status of each maintenance cycle within the historical time period, and the execution plan for each maintenance cycle within the target time period. P represents the planned maintenance item to be implemented in a certain overhaul cycle, and PF represents the actual maintenance item implemented in a certain overhaul cycle. The target time period is the target month corresponding to the predicted spare parts requisition resource value. The maintenance plan is the maintenance schedule corresponding to the target time period, and the planned spare parts requisition resource value is the resource value of spare parts planned to be requisitioned during the overhaul.

[0050] In this embodiment, the maintenance plan for the target time period can be determined by the maintenance cycle of the maintenance items in the maintenance plan, the execution status of each maintenance round within the historical time period, and the execution plan of each maintenance round within the target time period. Then, the planned spare parts requisition resource value corresponding to the target time period can be determined based on the maintenance plan.

[0051] Table 1

[0052]

[0053] Because nuclear power plants often have multiple similar maintenance items for the same equipment, and these items have different maintenance cycles, similar maintenance items may be performed on the same equipment during maintenance. A maintenance item equivalence mechanism can be used to avoid this. For example, for a certain motor equipment, if a disassembly inspection is performed every one refueling cycle (C), and the entire motor is replaced every 4C, then when performing a 4C motor replacement, the 1C disassembly inspection is not required. This demonstrates the application of a maintenance item equivalence mechanism for this equipment. For example, for maintenance items with a maintenance cycle longer than 1C, where C represents a refueling cycle, the maintenance plan for future maintenance cycles can be determined by obtaining information from the previous maintenance cycle and combining it with the maintenance item equivalence mechanism. For example, if a maintenance project has a maintenance cycle of 4C and its previous maintenance round was round 15, and there is no equivalent project record or project implementation record after round 15, then the first maintenance round for this maintenance project in the future will be round 19, and the second maintenance round will be round 23. If an equivalent record appears or the maintenance project is implemented in round 17, then the first maintenance round for this maintenance project in the future will be round 21, and the second maintenance round will be round 25.

[0054] S202. Based on the correspondence between the historical emergency resource requisition values ​​and maintenance durations of nuclear power plants, determine the emergency spare parts requisition value corresponding to the target time period.

[0055] Among them, the historical emergency resource requisition value is the resource value of spare parts that were requisitioned during major overhauls within a historical period and were not included in the maintenance plan. The maintenance duration is the duration of equipment maintenance. Optionally, the above duration can be in the number of days or in the number of months. The emergency spare parts requisition value is the resource value of spare parts that were requisitioned during major overhauls and were not included in the maintenance plan.

[0056] It is understandable that the resource value for emergency spare parts requisition at nuclear power plants has a high degree of randomness. Usually, the resource value for spare parts requisition is related to the amount of equipment being repaired, and the amount of equipment being repaired is related to the repair time. The two are positively correlated, that is, the longer the repair time, the more equipment is repaired, and the more spare parts may be needed. Therefore, by combining the historical emergency resource requisition value and repair time of the nuclear power plant with the repair time of the target time period, the emergency spare parts requisition value corresponding to the target time period can be determined.

[0057] S203: Obtain the unit production plan of the nuclear power plant and determine the unit planned spare parts requisition resource value for the target time period based on the unit production plan.

[0058] Among them, the unit production plan is the daily production plan of the nuclear power plant, and the unit planned spare parts requisition resource value is the spare parts resource value planned to be requisitioned during routine maintenance.

[0059] In some scenarios, a nuclear power plant's unit production plan includes different routine planned maintenance items. Typically, each maintenance item contains a corresponding standard resource package, which in turn includes different spare parts requirements. Optionally, the standard resource package includes two types of spare parts: Category A mandatory replacement spare parts and Category B potentially replaceable spare parts. The resource values ​​corresponding to the nuclear power plant's unit production plan are the resource values ​​for Category A mandatory replacement spare parts and Category B potentially replaceable spare parts, respectively. In this embodiment, determining the unit planned spare parts requisition resource value for a target time period based on the unit production plan may include:

[0060] a) Determine whether the historical usage data for the maintenance project is sufficient. For example, if the historical usage count is more than 3 times, then the usage data is sufficient.

[0061] b. If there is sufficient data, the planned resource value per unit of Class A spare parts for this maintenance project is the resource value required for Class A mandatory spare parts in the standard resource package, and the planned resource value per unit of Class B spare parts is the average value of the resource values ​​of Class B potentially replaceable spare parts in the historical data of this maintenance project.

[0062] c. If the amount of data used is small, then the planned resource value of Class A spare parts and the planned resource value of Class B spare parts for this maintenance project are both the resource value of Class A mandatory replacement spare parts and the resource value of Class B possible replacement spare parts in the standard resource package.

[0063] d. Based on the planned resource values ​​of Class A spare parts units and Class B spare parts units mentioned above, determine the planned spare parts requisition resource value for the target time period.

[0064] In other scenarios, for planned maintenance projects, work orders are issued in advance to reserve spare parts. These work orders include the start date, the date the spare parts are needed, and the reserved spare parts requisition resource value. Therefore, the planned spare parts requisition resource value per unit for the target time period can be determined by whether a work order has been issued to reserve spare parts for the maintenance project. This includes:

[0065] a. If a work order is issued for a maintenance project, the planned spare parts requisition resource value for Class A units of the maintenance project is the requisition resource value for the maintenance project reserved in the work order; the planned spare parts requisition resource value for Class B units is the required resource value for Class B spare parts in the standard resource package.

[0066] b. If no work order is issued for the maintenance project, the method for determining the planned spare parts requisition resource value for Class A and Class B units of the maintenance project shall be the same as the method described above for determining the planned spare parts requisition resource value for the target time period based on the unit production plan.

[0067] In other scenarios, the proportion of time allocated to major and non-major repairs in each month can be calculated based on the start date and duration of the planned maintenance schedule for the nuclear power plant. This allows for the calculation of the distribution ratio of planned spare parts requisition resources per unit. For example, the spare parts requisition time in a maintenance project can be broken down by month. For instance, a nuclear power plant has four units: Unit 1's planned maintenance start date is January 21, 2024, with a duration of 38 days; Unit 2's planned maintenance start date is September 25, 2024, with a duration of 36 days; Unit 3's planned maintenance start date is May 23, 2024, with a duration of 39 days; and Unit 4's planned maintenance start date is April 10, 2024, with a duration of 41 days. This shows that the percentage of non-major overhaul periods for this nuclear power plant in January, February, March, April, May, June, July, August, September, October, November, and December of 2024 was 92%.

[0068] The percentages are 77%, 100%, 83%, 76%, 75%, 100%, 100%, 95%, 75%, 100%, and 100%. The sum of the non-major repair percentages is 10.7 months. By dividing the non-major repair percentage for each month by the sum of the non-major repair percentages, the spare parts requisition distribution for each month can be obtained, which are 8.6%, 7.2%, 9.3%, 7.7%, 7.1%, 7.0%, 9.3%, 9.3%, 8.9%, 7.0%, 9.3%, and 9.3%. If the threshold for the unit planned spare parts requisition resource value of the nuclear power plant in 2024 is 95 million yuan, then the unit planned spare parts requisition resource values ​​for January, February, March, April, May, June, July, August, September, October, November, and December of 2024 can be determined to be 8.13 million yuan, 6.8 million yuan, 8.86 million yuan, 7.31 million yuan, 6.72 million yuan, 6.65 million yuan, 8.86 million yuan, 8.86 million yuan, 8.42 million yuan, 6.65 million yuan, 8.86 million yuan, and 8.86 million yuan, respectively. Specifically, if work orders are reserved for routine planned maintenance projects, the spare parts requisition value for that maintenance project will be deducted from the total requisition value of 95 million yuan and added to the corresponding month's start date of the work order. For example, if 10 routine planned maintenance projects at this nuclear power plant have work orders reserved, all with a start date in March 2024, and the total requisition value for these 10 maintenance projects is 3 million yuan, this reserved value will be deducted from the total requisition value of 95 million yuan and added to the corresponding month's start date of the work order. After deducting the total resource expenditure of 95 million yuan, the planned spare parts expenditure of the unit in January, February, March, April, May, June, July, August, September, October, November and December of 2024 were 7.87 million yuan, 6.58 million yuan, 11.58 million yuan, 7.08 million yuan, 6.51 million yuan, 6.44 million yuan, 8.58 million yuan, 8.58 million yuan, 8.16 million yuan, 6.44 million yuan, 8.58 million yuan and 8.58 million yuan respectively.

[0069] S204. Based on the historical average annual resource consumption value of emergency spare parts for nuclear power plants, determine the unit emergency spare parts consumption value for the target time period.

[0070] Among them, the historical average annual resource consumption value of emergency spare parts is the average value of the resource value of spare parts that were not included in the maintenance plan during equipment maintenance in the historical period (e.g., the past three years), and the unit emergency spare parts consumption value is the resource value of spare parts that were not included in the maintenance plan during routine maintenance in the target period.

[0071] In this embodiment, the historical average annual resource consumption value of emergency spare parts in the target time period can be obtained by combining the formula with the historical average annual resource consumption value of emergency spare parts in the nuclear power plant. By referring to the distribution ratio of planned spare parts resource consumption value per unit, the annual historical average annual resource consumption value of emergency spare parts can be decomposed into each month, thereby obtaining the unit emergency spare parts resource consumption value corresponding to the target time period.

[0072] S205: Based on the planned spare parts requisition resource value, the emergency spare parts requisition resource value, the unit's planned spare parts requisition resource value, and the unit's emergency spare parts requisition resource value, obtain the predicted spare parts requisition resource value for the target time period.

[0073] In this embodiment, optionally, the annual spare parts requisition value for the year containing the target time period can be obtained by summing the planned spare parts requisition resource value, the emergency spare parts requisition resource value, the unit planned spare parts requisition resource value, and the unit emergency spare parts requisition resource value. Then, the monthly average of the annual spare parts requisition resource value can be calculated to obtain the predicted spare parts requisition resource value for the target time period. Alternatively, optionally, the sum of the planned spare parts requisition resource value, the emergency spare parts requisition resource value, the unit planned spare parts requisition resource value, and the unit emergency spare parts requisition resource value can be used as the predicted spare parts requisition resource value for the target time period. Or, the weighted sum of the planned spare parts requisition resource value, the emergency spare parts requisition resource value, the unit planned spare parts requisition resource value, and the unit emergency spare parts requisition resource value can also be used as the predicted spare parts requisition resource value for the target time period. For example, the predicted spare parts requisition resource value corresponding to the target time period can be shown in Table 2, where t represents the current month, SO1 represents the planned spare parts requisition resource value, SO2 represents the emergency spare parts requisition resource value, SO3 represents the unit planned spare parts requisition resource value, SO4 represents the unit emergency spare parts requisition resource value, SO represents the predicted spare parts requisition resource value corresponding to the target time period, and t+1, t+2, t+3, t+4, t+5, t+6, t+7, t+8, t+9, and t+10 represent the next ten months corresponding to the target time period.

[0074] Table 2

[0075] type t+1 t+2 t+3 t+4 t+5 t+6 t+7 t+8 t+9 t+10 <![CDATA[SO1]]> 1,832 1,164 310 0 1,212 2,015 1,093 689 1,081 1,227 <![CDATA[SO2]]> 1,499 1,227 511 0 1,082 1,885 895 773 1,166 1,304 <![CDATA[SO3]]> 363 645 724 1,484 355 208 1,435 882 732 120 <![CDATA[SO4]]> 960 1,080 1,200 1,200 1,200 960 960 1,200 1,080 960 SO 4,654 4,116 2,745 2,684 3,849 5,067 4,383 3,544 4,059 3,611

[0076] The aforementioned method, apparatus, equipment, and storage medium for predicting spare parts requisition resource values ​​for nuclear power plants can determine the planned spare parts requisition resource value for the target time period by identifying the maintenance plan corresponding to the target time period from the nuclear power plant's predicted maintenance plan; it can also determine the emergency spare parts requisition resource value for the target time period based on the correspondence between the nuclear power plant's historical emergency spare parts requisition resource values ​​and maintenance durations; it can determine the unit planned spare parts requisition resource value for the target time period by obtaining the nuclear power plant's unit production plan; and it can determine the unit planned spare parts requisition resource value for the target time period based on the nuclear power plant's historical annual average emergency spare parts requisition resource value. The resource requisition value can determine the unit emergency spare parts requisition value for a target time period. Therefore, based on the planned spare parts requisition value, emergency spare parts requisition value, unit planned spare parts requisition value, and unit emergency spare parts requisition value for the target time period, the predicted spare parts requisition value for the target time period can be obtained. Compared with traditional technologies that can only determine the annual spare parts requisition value based on historical maintenance spare parts requisition value and unit maintenance spare parts requisition value, this application considers multiple factors that determine the monthly requisition value, and can accurately predict the monthly spare parts requisition value for nuclear power plants.

[0077] In one embodiment, such as Figure 3 As shown, the above S201 includes:

[0078] S301, extract the maintenance items corresponding to the maintenance plan from the maintenance plan.

[0079] The maintenance items can be different repair projects performed on different equipment in a nuclear power plant. For example, a maintenance item could be a machine outlet protection verification project, a long-term energized excitation intermediate relay replacement project for the control circuit, or a unit main transformer output differential protection inverter power supply replacement project. This embodiment does not impose any limitations on these aspects. In this embodiment, a preset recognition algorithm can be used to identify the maintenance scheme using "maintenance item" as the keyword, thereby obtaining the maintenance items corresponding to each maintenance scheme. Optionally, the recognition algorithm can be an Optical Character Recognition (OCR) algorithm or a Scene Text Recognition (STR) algorithm. This embodiment does not impose any limitations on these aspects.

[0080] S302, based on the standard resource package of the maintenance project, determine the quantity of spare parts required for the maintenance plan corresponding to the target time period; the standard resource package includes the quantity and type of spare parts required for the maintenance project.

[0081] The standard resource package is a maintenance standard resource package for spare parts corresponding to different maintenance projects. The standard resource package contains different spare parts corresponding to different maintenance projects. Optionally, the standard resource package contains two types of spare parts: Class A mandatory replacement spare parts and Class B possible replacement spare parts, with different quantities of Class A mandatory replacement spare parts and Class B possible replacement spare parts. Optionally, the quantity required for the maintenance plan can be based on the number of times the spare parts were used in the maintenance projects during a historical period.

[0082] S303, based on the quantity of spare parts and the unit resource value of the spare parts, determine the planned resource requisition value corresponding to the target time period.

[0083] Specifically, based on the required quantity of different types of spare parts and the unit resource value of the spare parts, the resource value required for Category A mandatory replacement spare parts in the standard resource package can be obtained as the resource value for Category A planned spare parts requisition, and the resource value required for Category B potentially replaceable spare parts can be obtained as the resource value for Category B planned spare parts. Thus, the planned resource value for the target time period can be determined based on the resource values ​​for Category A planned spare parts requisition and Category B planned spare parts requisition.

[0084] It should be noted that the same standard resource package may correspond to multiple maintenance projects, and the requisition status of different maintenance projects is not entirely the same. The corresponding spare parts requisition resource value can be determined based on the number of requisition records for different maintenance projects. For example, maintenance project 1 and maintenance project 2 both correspond to the same standard resource package, but maintenance project 1 has more requisition records. In this case, the requisition resource value for Class A planned spare parts in this maintenance project is the Class A spare parts demand value attached to the standard resource package, and the requisition resource value for Class B planned spare parts is the predicted Class B spare parts requisition resource value for this maintenance project based on historical requisition records. Maintenance project 2 has fewer requisition records, so the requisition resource value for Class A planned spare parts in this maintenance project is the Class A mandatory replacement spare parts demand value attached to the standard resource package, and the requisition resource value for Class B potentially replaceable spare parts is the Class B potentially replaceable spare parts demand value.

[0085] Overhauls of mature nuclear power plant units can be divided into two types: annual refueling overhauls and ten-year overhauls. Ten-year overhauls involve more maintenance work and take significantly longer than regular annual overhauls. Therefore, nuclear power plant overhauls can be analyzed and calculated separately for annual and ten-year overhauls, including:

[0086] a) Compile the data on spare parts requisition for nuclear power plant overhauls. Using the overhaul commencement date as the baseline, calculate the spare parts requisition resource value for each day in the 60 days before and 90 days after the overhaul commencement.

[0087] b. Divide the daily spare parts requisition resource value by the total spare parts requisition resource value for the overhaul to calculate the daily spare parts requisition resource value distribution ratio for the overhaul.

[0088] c. By calculating the average distribution ratio of spare parts requisition resource values ​​for multiple annual and ten-year overhauls of a nuclear power plant, the spare parts requisition resource values ​​for annual and ten-year overhauls at different commencement dates can be obtained. The distribution of spare parts requisition resource values ​​for annual and ten-year overhauls at different commencement dates can be as follows: Figure 4 As shown, the vertical axis represents the proportion of spare parts requisition resources, and the horizontal axis represents the date of the start of the overhaul in a certain month. In the figure, M-1 is the proportion of spare parts requisition resources in the month before the start of the overhaul; M+0 is the proportion of spare parts requisition resources in the month when the overhaul starts; M+1 is the proportion of spare parts requisition resources in the second month after the start of the overhaul; and M+2 is the proportion of spare parts requisition resources in the third month after the start of the overhaul.

[0089] d. Based on the planned spare parts requisition resource value for the annual and decennial overhauls of the nuclear power plant, and the proportion of spare parts requisition resource value for different start dates of the annual and decennial overhauls, the planned requisition resource value for the target time period is derived.

[0090] For example, the planned spare parts requisition resource value for a nuclear power plant's annual major overhaul is 20 million yuan, with a planned commencement date of March 10, 2025. The planned spare parts requisition resource value for a ten-year major overhaul is 35 million yuan, with a planned commencement date of June 20, 2025. By calculating the proportions of spare parts requisition resource values ​​for M-1, M+0, M+1, and M+2, which are scheduled to commence on the 10th of the annual major overhaul, the percentages are 8.8%, 80.5%, 10.7%, and 0.0%, respectively. Therefore, it is predicted that the annual major overhaul will requisition 1.76 million yuan in February 2025, 16.1 million yuan in March, 2.14 million yuan in April, and 0 yuan in May 2025. Similarly, the proportion of spare parts requisition for the M-1, M+0, M+1, and M+2 units, which are scheduled to begin their ten-year overhaul on the 20th, is calculated to be 4.3%, 45.9%, 38.1%, and 11.7%, respectively. Therefore, it is predicted that the ten-year overhaul will requisition RMB1.51 million in May 2025, RMB16.06 million in June 2025, RMB13.34 million in June 2025, and RMB4.09 million in June 2025.

[0091] In this embodiment, the planned spare parts requisition resource value corresponding to the target time period is determined according to the maintenance plan. This includes extracting the maintenance items corresponding to the maintenance plan from the maintenance plan, determining the number of spare parts required for the maintenance plan corresponding to the target time period based on the standard resource package of the maintenance items, and thus determining the planned spare parts requisition resource value corresponding to the target time period based on the number of spare parts and the unit resource value of the spare parts. This method can take into account the number of spare parts requisition records for different maintenance items in historical time periods to determine the planned spare parts requisition resource value, making the determined planned spare parts requisition resource value more accurate.

[0092] To obtain the quantity of different types of spare parts in the aforementioned standard resource package, in one embodiment, such as Figure 5 As shown, the above-mentioned spare parts include a first spare part and a second spare part. S302 includes:

[0093] S401, based on the standard resource package, determine the quantity of the first spare parts required for the maintenance plan corresponding to the target time period.

[0094] Optionally, the first spare part can be a mandatory spare part of category A in the standard resource package, and the quantity of the first spare part can be the quantity of mandatory spare parts of category A in the standard resource package; the first spare part can also be a possible spare part of category B in the standard resource package, and the quantity of the first spare part can also be the quantity of possible spare parts of category B in the standard resource package.

[0095] S402, based on the standard resource package, determine the quantity of the second spare parts required for the maintenance plan corresponding to the target time period.

[0096] Optionally, the second spare part can be a Class B replaceable spare part in the standard resource package, and the quantity of the second spare part can be the quantity of Class B replaceable spare parts in the standard resource package; the second spare part can also be a Class A mandatory replaceable spare part in the standard resource package, and the quantity of the second spare part can also be the quantity of Class A mandatory replaceable spare parts in the standard resource package.

[0097] The same standard resource package may correspond to multiple maintenance projects, and the usage of different maintenance projects is not exactly the same. The corresponding spare parts usage quantity can be determined based on the number of times the usage records of Class A mandatory replacement spare parts and Class B possible replacement spare parts for different maintenance projects are recorded.

[0098] S403, the sum of the quantity of the first spare parts and the quantity of the second spare parts is determined as the quantity of spare parts required for the maintenance plan corresponding to the target time period.

[0099] Optionally, the quantity of the first spare part and the quantity of the second spare part can be added together as the number of spare parts required for the maintenance plan, or the weighted sum of the quantity of the first spare part and the quantity of the second spare part can be used as the number of spare parts required for the maintenance plan.

[0100] In this embodiment, by determining the number of first spare parts and the number of second spare parts required for the maintenance plan corresponding to the target time period based on the standard resource package, and then determining the sum of the number of first spare parts and the number of second spare parts as the number of spare parts required for the maintenance plan corresponding to the target time period, the number of spare parts required for the maintenance plan can be determined more accurately.

[0101] The resource value for emergency spare parts requisition during a target time period at a nuclear power plant can be predicted by analyzing the correlation between the resource value for emergency maintenance spare parts requisition and the maintenance duration during historical major overhauls of the nuclear power plant. In one embodiment, the above method further includes: performing linear fitting on the resource value for emergency maintenance spare parts requisition and the maintenance duration during historical annual and ten-year maintenance of the nuclear power plant to obtain the correlation between the historical resource value for emergency spare parts requisition and the maintenance duration of the nuclear power plant.

[0102] Among them, historical annual maintenance refers to the annual major overhaul within a historical period, and ten-year maintenance refers to the annual major overhaul of the nuclear power plant over the past ten years.

[0103] For example, a model can be fitted using the maintenance duration of a nuclear power plant as the x-axis and the resource value of emergency maintenance spare parts requisition during major overhauls as the y-axis to obtain the correspondence between the historical emergency maintenance spare parts requisition value and maintenance duration of the nuclear power plant, as shown below. Figure 6 As shown, from Figure 6 The data shows that the estimated resource consumption for emergency spare parts during a certain annual overhaul of the nuclear power plant is 18.1 million yuan, with a planned start date of March 10, 2025. The estimated resource consumption for emergency spare parts during a certain ten-year overhaul is 36.83 million yuan, with a planned start date of June 20, 2025. Calculations show that when the annual overhaul of the nuclear power plant starts on the 10th, the consumption rates for M-1, M+0, M+1, and M+2 spare parts are 8.8%, 80.5%, 10.7%, and 0.0%, respectively. Therefore, it can be predicted that the annual overhaul will consume 1.59 million yuan in February 2023, 14.58 million yuan in March, 1.93 million yuan in April, and 0 yuan in May. Similarly, calculating the usage rates of M-1, M+0, M+1, and M+2 for the ten-year overhaul of the nuclear power plant when it commences on the 20th, the rates are 4.3%, 45.9%, 38.1%, and 11.7%, respectively. Therefore, it can be predicted that the ten-year overhaul will require RMB 1.58 million in May 2025, RMB 16.91 million in June 2025, RMB 14.03 million in June 2025, and RMB 4.31 million in June 2025.

[0104] In this embodiment of the application, by linearly fitting the resource values ​​of emergency maintenance spare parts requisition and maintenance duration of the nuclear power plant’s historical annual maintenance and ten-year maintenance, the correspondence between the historical emergency spare parts requisition resource values ​​and maintenance duration of the nuclear power plant is obtained. Thus, the emergency spare parts requisition resource values ​​corresponding to the target time period can be determined more accurately through the correspondence.

[0105] In one embodiment, the method further includes: obtaining a unit production plan based on the nuclear power plant's preventive maintenance program document, periodic test supervision program document, and in-service inspection program document.

[0106] Among them, the preventive maintenance program document is the implementation plan for preventive maintenance formulated by the nuclear power plant; the periodic test and supervision program document is the implementation plan for periodic test and supervision of different units by the nuclear power plant based on their equipment characteristics and service life; the in-service inspection program document is the implementation plan for inspecting normally operating units by the nuclear power plant; and the unit production plan is the daily production plan of the nuclear power plant. Optionally, in this embodiment, the daily production plan of the unit can be obtained through the above implementation plans, and the obtained daily production plan can be determined as the unit production plan.

[0107] In this embodiment, a unit production plan is obtained based on the preventive maintenance outline, periodic test supervision outline, and in-service inspection outline of the nuclear power plant. This allows the unit planned spare parts requisition resource value for the target time period to be determined through the unit production plan, thereby improving the accuracy of the prediction of the unit planned spare parts requisition resource value.

[0108] In some scenarios, the daily emergency spare parts requisition value of a nuclear power plant has a high degree of randomness. The future emergency spare parts requisition value can be predicted by referring to the historical average annual requisition value of the nuclear power plant. In one embodiment, the above S204 includes:

[0109] Step A, according to the formula P = K * (a n-1 *p n-1 +a n-2 *p n-2 +a n-3 *p n-3 ), determine the emergency spare parts requisition resource value per unit for the year corresponding to the target time period; where p is the emergency spare parts requisition resource value per unit for the year corresponding to the target time period, K is the number of units in the nuclear power plant, p n-1 p represents the average annual emergency spare parts requisition value per unit of a nuclear power plant during the first time period. n-2 p represents the average annual emergency spare parts requisition value per unit of the nuclear power plant during the second time period. n-3 a represents the average annual emergency spare parts consumption per unit of the nuclear power plant during the third time period. n-1 a n-2 a n-3 Let a be the weight parameter. n-1 +a n-2 +a n-3 =1, a n-1 a n-2 a n-3 All are positive numbers; the third time period is earlier than the second time period, the second time period is earlier than the first time period, and the first time period is earlier than the target time period;

[0110] Step B: Determine the unit's emergency spare parts requisition value for the target time period based on the unit's emergency spare parts requisition resource value for the year corresponding to the target time period, the proportion of non-major maintenance time for the target time period, and the proportion of major maintenance time for the target time period.

[0111] In this embodiment, optionally, the first time period, the second time period, and the third time period can be the previous year, the previous two years, and the previous three years that are adjacent to the target time period, respectively; or they can be the previous year, the previous three years, and the previous five years that are adjacent to the target time period; or they can be the previous three years that are not adjacent to the target time.

[0112] For example, a nuclear power plant had 3, 3, and 4 units in 2018, 2019, and 2020, respectively. Its annual emergency spare parts requisition resource value was 52 million yuan, 71 million yuan, and 79 million yuan, respectively. The emergency annual spare parts requisition resource value per unit can be calculated, i.e., P. n-3 P n-2 P n-1 The figures are 17.33 million yuan, 23.66 million yuan, and 19.75 million yuan respectively. Using the method described above, which calculates the proportion of major and non-major overhaul time in each month based on the start date and duration of the future maintenance plan for the nuclear power plant, the distribution ratio of planned spare parts requisition resources per unit is calculated. This method decomposes the predicted annual emergency spare parts requisition resource value into each month, thus determining the unit emergency spare parts requisition resource value for the target time period. If the nuclear power plant has 4 units in 2024, the estimated daily emergency spare parts requisition resource value for 2024 can be calculated as 102.2 million yuan using the above formula. The nuclear power plant has 4 units. The major overhaul start date for Unit 1 is January 21, 2024, with a duration of 38 days; the major overhaul start date for Unit 2 is September 25, 2024, with a duration of 36 days; and the major overhaul start date for Unit 3 is May 2... On the 3rd, the overhaul period is 39 days; the overhaul start date for Unit 4 is April 10, 2024, and the overhaul period is 41 days. Therefore, based on the above method, the unit emergency spare parts requisition resource value for the nuclear power plant from January to December 2024 is calculated to be 8.74 million yuan, 7.31 million yuan, 9.54 million yuan, 7.87 million yuan, 7.23 million yuan, 7.15 million yuan, 9.54 million yuan, 9.54 million yuan, 9.06 million yuan, 7.15 million yuan, 9.54 million yuan, and 9.54 million yuan, respectively.

[0113] In this embodiment, by determining the unit emergency spare parts requisition value for the target time period based on the historical average annual requisition value of emergency spare parts in nuclear power plants, the unit emergency spare parts requisition value is obtained by calculating the historical average annual requisition value of emergency spare parts according to the formula and referring to the distribution ratio of the unit planned spare parts requisition value. This improves the accuracy of predicting the unit emergency spare parts requisition value for the target time period.

[0114] It should be understood that although the steps in the flowcharts of the embodiments described above are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the embodiments described above may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages of other steps.

[0115] Based on the same inventive concept, this application also provides a nuclear power plant spare parts requisition resource value prediction device for implementing the above-mentioned nuclear power plant spare parts requisition resource value prediction method. The solution provided by this device is similar to the solution described in the above-described method. Therefore, the specific limitations of one or more embodiments of the nuclear power plant spare parts requisition resource value prediction device provided below can be found in the limitations of the nuclear power plant spare parts requisition resource value prediction method above, and will not be repeated here.

[0116] In one embodiment, such as Figure 7 As shown, a device for predicting the resource value of spare parts requisition in a nuclear power plant is provided, comprising:

[0117] The first determining module 11 is used to identify the maintenance plan corresponding to the target time period from the predicted maintenance plan of the nuclear power plant, and determine the planned spare parts requisition resource value corresponding to the target time period based on the maintenance plan.

[0118] The second determining module 12 is used to determine the emergency spare parts requisition value corresponding to the target time period based on the correspondence between the historical emergency resource requisition value and maintenance duration of the nuclear power plant.

[0119] The third determining module 13 is used to obtain the unit production plan of the nuclear power plant and determine the unit planned spare parts requisition resource value corresponding to the target time period based on the unit production plan;

[0120] The fourth determination module 14 is used to determine the unit emergency spare parts requisition resource value for the target time period based on the historical annual average resource value of emergency spare parts requisition for nuclear power plants.

[0121] The first acquisition module 15 is used to acquire the predicted spare parts requisition value for the target time period based on the planned spare parts requisition value, the sudden spare parts requisition value, the unit's planned spare parts requisition value, and the unit's sudden spare parts requisition value.

[0122] The nuclear power plant spare parts requisition resource value prediction device provided in this embodiment can execute the above method embodiment. Its implementation principle and technical effect are similar, and will not be described again here.

[0123] In one embodiment, such as Figure 8 As shown, the planned spare parts requisition resource value corresponding to the target time period is determined according to the maintenance plan. The first determining module 11 includes: an acquisition unit 111, a first determining unit 112, and a second determining unit 113, wherein:

[0124] The acquisition unit 111 is used to extract the maintenance items corresponding to the maintenance plan from the maintenance plan.

[0125] The first determining unit 112 is used to determine the quantity of spare parts required for the maintenance plan corresponding to the target time period based on the standard resource package of the maintenance project; the standard resource package includes the quantity and type of spare parts required for the maintenance project.

[0126] The second determining unit 113 is used to determine the planned resource requisition value corresponding to the target time period based on the quantity of spare parts and the unit resource value of the spare parts.

[0127] The nuclear power plant spare parts requisition resource value prediction device provided in this embodiment can execute the above method embodiment. Its implementation principle and technical effect are similar, and will not be described again here.

[0128] In one embodiment, the spare parts include a first spare part and a second spare part, and the first determining unit 112 is specifically used for:

[0129] Based on the standard resource package, determine the quantity of the first spare parts required for the maintenance plan corresponding to the target time period; based on the standard resource package, determine the quantity of the second spare parts required for the maintenance plan corresponding to the target time period; the sum of the quantity of the first spare parts and the quantity of the second spare parts is determined as the quantity of spare parts required for the maintenance plan corresponding to the target time period.

[0130] The nuclear power plant spare parts requisition resource value prediction device provided in this embodiment can execute the above method embodiment. Its implementation principle and technical effect are similar, and will not be described again here.

[0131] In one embodiment, please continue to refer to Figure 8 The aforementioned device also includes:

[0132] The second acquisition module 16 is used to perform linear fitting on the resource values ​​and maintenance duration of emergency maintenance spare parts requisition for historical annual maintenance and ten-year maintenance of nuclear power plants, so as to obtain the correspondence between the historical emergency spare parts requisition resource values ​​and maintenance duration of nuclear power plants.

[0133] The nuclear power plant spare parts requisition resource value prediction device provided in this embodiment can execute the above method embodiment. Its implementation principle and technical effect are similar, and will not be described again here.

[0134] In one embodiment, please continue to refer to Figure 8 The aforementioned device also includes:

[0135] The third acquisition module 17 is used to acquire unit production plans based on the nuclear power plant's preventive maintenance outline documents, periodic test supervision outline documents, and in-service inspection outline documents.

[0136] The nuclear power plant spare parts requisition resource value prediction device provided in this embodiment can execute the above method embodiment. Its implementation principle and technical effect are similar, and will not be described again here.

[0137] In one embodiment, please continue to refer to Figure 8 The aforementioned fourth determining module 14 includes: a third determining unit 141 and a fourth determining unit 142, wherein:

[0138] The third determining unit 141 is used to determine the formula P = K * (a n-1 *p n-1 +a n-2 *p n-2 +a n-3 *p n-3 ), determine the emergency spare parts requisition resource value per unit for the year corresponding to the target time period; where p is the emergency spare parts requisition resource value per unit for the year corresponding to the target time period, K is the number of units in the nuclear power plant, p n-1 p represents the average annual emergency spare parts requisition value per unit of a nuclear power plant during the first time period. n-2 p represents the average annual emergency spare parts requisition value per unit of the nuclear power plant during the second time period. n-3 a represents the average annual emergency spare parts consumption per unit of the nuclear power plant during the third time period. n-1 a n-2 a n-3 Let a be the weight parameter. n-1 +a n-2 +a n-3 =1, a n-1 a n-2 an-3 All are positive numbers; the third time period is earlier than the second time period, the second time period is earlier than the first time period, and the first time period is earlier than the target time period.

[0139] The fourth determining unit 142 is used to determine the unit's emergency spare parts requisition value for the target time period based on the unit's emergency spare parts requisition resource value for the year corresponding to the target time period, the proportion of non-major maintenance time for the target time period, and the proportion of major maintenance time for the target time period.

[0140] The nuclear power plant spare parts requisition resource value prediction device provided in this embodiment can execute the above method embodiment. Its implementation principle and technical effect are similar, and will not be described again here.

[0141] Each module in the aforementioned nuclear power plant spare parts requisition resource value prediction device can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in or independent of the processor in a computer device, or stored in the memory of a computer device as software, so that the processor can call and execute the operations corresponding to each module.

[0142] In one embodiment, a computer device is provided, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to perform the following steps:

[0143] Identify the maintenance plans corresponding to the target time period from the nuclear power plant's forecast maintenance schedule, and determine the planned spare parts requisition resource value for the target time period based on the maintenance plans;

[0144] Based on the historical correlation between emergency resource requisition values ​​and maintenance durations at nuclear power plants, determine the emergency spare parts requisition value corresponding to the target time period;

[0145] Obtain the unit production plan of the nuclear power plant, and determine the unit planned spare parts requisition resource value for the target time period based on the unit production plan;

[0146] Based on the historical average annual resource consumption value of emergency spare parts at nuclear power plants, determine the unit emergency spare parts consumption value for the target time period.

[0147] Based on the planned spare parts requisition resource value, the emergency spare parts requisition resource value, the unit's planned spare parts requisition resource value, and the unit's emergency spare parts requisition resource value, obtain the predicted spare parts requisition resource value for the target time period.

[0148] In one embodiment, when the processor executes the computer program, it further performs the following steps: determining the planned spare parts requisition resource value corresponding to the target time period based on the maintenance plan, including:

[0149] Extract the maintenance items corresponding to the maintenance plan from the maintenance plan;

[0150] Based on the standard resource package for the maintenance project, determine the quantity of spare parts required for the maintenance plan corresponding to the target time period; the standard resource package includes the quantity and type of spare parts required for the maintenance project.

[0151] Based on the quantity of spare parts and the unit resource value of the spare parts, determine the planned resource requisition value corresponding to the target time period.

[0152] In one embodiment, when the processor executes the computer program, it further performs the following steps: the spare parts include a first spare part and a second spare part; based on the standard resource package of the maintenance project, the quantity of spare parts required for the maintenance plan corresponding to the target time period is determined, including:

[0153] Based on the standard resource package, determine the quantity of the first spare parts required for the maintenance plan corresponding to the target time period;

[0154] Based on the standard resource package, determine the quantity of the second spare parts required for the maintenance plan corresponding to the target time period;

[0155] The sum of the first spare parts quantity and the second spare parts quantity is determined as the spare parts quantity required for the maintenance plan corresponding to the target time period.

[0156] In one embodiment, when the processor executes the computer program, it also performs the following steps: linearly fitting the resource values ​​and maintenance durations of emergency maintenance spare parts requisition for historical annual maintenance and ten-year maintenance of the nuclear power plant to obtain the correspondence between the historical emergency spare parts requisition resource values ​​and maintenance durations of the nuclear power plant.

[0157] In one embodiment, when the processor executes the computer program, it also performs the following steps: obtaining a unit production plan based on the nuclear power plant's preventive maintenance program document, periodic test supervision program document, and in-service inspection program document.

[0158] In one embodiment, when the processor executes the computer program, it further performs the following steps: determining the unit emergency spare parts requisition value for a target time period based on the historical average annual requisition value of emergency spare parts at the nuclear power plant, including:

[0159] According to the formula P=K*(a) n-1 *p n-1 +a n-2 *p n-2 +a n-3 *p n-3 ), determine the emergency spare parts requisition resource value per unit for the year corresponding to the target time period; where p is the emergency spare parts requisition resource value per unit for the year corresponding to the target time period, K is the number of units in the nuclear power plant, p n-1p represents the average annual emergency spare parts requisition value per unit of a nuclear power plant during the first time period. n-2 p represents the average annual emergency spare parts requisition value per unit of the nuclear power plant during the second time period. n-3 a represents the average annual emergency spare parts consumption per unit of the nuclear power plant during the third time period. n-1 a n-2 a n-3 Let a be the weight parameter. n-1 +a n-2 +a n-3 =1, a n-1 a n-2 a n-3 All are positive numbers; the third time period is earlier than the second time period, the second time period is earlier than the first time period, and the first time period is earlier than the target time period;

[0160] The unit's emergency spare parts requisition value for the target time period is determined based on the unit's emergency spare parts requisition resource value for the year corresponding to the target time period, the proportion of non-major maintenance time for the target time period, and the proportion of major maintenance time for the target time period.

[0161] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon, the computer program performing the following steps when executed by a processor:

[0162] Identify the maintenance plans corresponding to the target time period from the nuclear power plant's forecast maintenance schedule, and determine the planned spare parts requisition resource value for the target time period based on the maintenance plans;

[0163] Based on the historical correlation between emergency resource requisition values ​​and maintenance durations at nuclear power plants, determine the emergency spare parts requisition value corresponding to the target time period;

[0164] Obtain the unit production plan of the nuclear power plant, and determine the unit planned spare parts requisition resource value for the target time period based on the unit production plan;

[0165] Based on the historical average annual resource consumption value of emergency spare parts at nuclear power plants, determine the unit emergency spare parts consumption value for the target time period.

[0166] Based on the planned spare parts requisition resource value, the emergency spare parts requisition resource value, the unit's planned spare parts requisition resource value, and the unit's emergency spare parts requisition resource value, obtain the predicted spare parts requisition resource value for the target time period.

[0167] In one embodiment, when the computer program is executed by the processor, it further performs the following steps: determining the planned spare parts requisition resource value corresponding to the target time period based on the maintenance plan, including:

[0168] Extract the maintenance items corresponding to the maintenance plan from the maintenance plan;

[0169] Based on the standard resource package for the maintenance project, determine the quantity of spare parts required for the maintenance plan corresponding to the target time period; the standard resource package includes the quantity and type of spare parts required for the maintenance project.

[0170] Based on the quantity of spare parts and the unit resource value of the spare parts, determine the planned resource requisition value corresponding to the target time period.

[0171] In one embodiment, when the computer program is executed by the processor, it further implements the following steps: the spare parts include a first spare part and a second spare part; based on the standard resource package of the maintenance project, the quantity of spare parts required for the maintenance plan corresponding to the target time period is determined, including:

[0172] Based on the standard resource package, determine the quantity of the first spare parts required for the maintenance plan corresponding to the target time period;

[0173] Based on the standard resource package, determine the quantity of the second spare parts required for the maintenance plan corresponding to the target time period;

[0174] The sum of the first spare parts quantity and the second spare parts quantity is determined as the spare parts quantity required for the maintenance plan corresponding to the target time period.

[0175] In one embodiment, when the computer program is executed by the processor, it also performs the following steps: linearly fitting the resource values ​​and maintenance durations of emergency maintenance spare parts requisition for historical annual and ten-year maintenance of the nuclear power plant to obtain the correspondence between the resource values ​​and maintenance durations of historical emergency spare parts requisition for the nuclear power plant.

[0176] In one embodiment, when the computer program is executed by the processor, it also performs the following steps: obtaining a unit production plan based on the nuclear power plant's preventive maintenance program document, periodic test supervision program document, and in-service inspection program document.

[0177] In one embodiment, when the computer program is executed by the processor, it further performs the following steps: determining the unit emergency spare parts requisition value for a target time period based on the historical average annual requisition value of emergency spare parts at the nuclear power plant, including:

[0178] According to the formula P=K*(a) n-1 *p n-1 +a n-2 *p n-2 +a n-3 *p n-3 ), determine the emergency spare parts requisition resource value per unit for the year corresponding to the target time period; where p is the emergency spare parts requisition resource value per unit for the year corresponding to the target time period, K is the number of units in the nuclear power plant, p n-1p represents the average annual emergency spare parts requisition value per unit of a nuclear power plant during the first time period. n-2 p represents the average annual emergency spare parts requisition value per unit of the nuclear power plant during the second time period. n-3 a represents the average annual emergency spare parts consumption per unit of the nuclear power plant during the third time period. n-1 a n-2 a n-3 Let a be the weight parameter. n-1 +a n-2 +a n-3 =1, a n-1 a n-2 a n-3 All are positive numbers; the third time period is earlier than the second time period, the second time period is earlier than the first time period, and the first time period is earlier than the target time period;

[0179] The unit's emergency spare parts requisition value for the target time period is determined based on the unit's emergency spare parts requisition resource value for the year corresponding to the target time period, the proportion of non-major maintenance time for the target time period, and the proportion of major maintenance time for the target time period.

[0180] In one embodiment, a computer program product is provided, including a computer program that, when executed by a processor, performs the following steps:

[0181] Identify the maintenance plans corresponding to the target time period from the nuclear power plant's forecast maintenance schedule, and determine the planned spare parts requisition resource value for the target time period based on the maintenance plans;

[0182] Based on the historical correlation between emergency resource requisition values ​​and maintenance durations at nuclear power plants, determine the emergency spare parts requisition value corresponding to the target time period;

[0183] Obtain the unit production plan of the nuclear power plant, and determine the unit planned spare parts requisition resource value for the target time period based on the unit production plan;

[0184] Based on the historical average annual resource consumption value of emergency spare parts at nuclear power plants, determine the unit emergency spare parts consumption value for the target time period.

[0185] Based on the planned spare parts requisition resource value, the emergency spare parts requisition resource value, the unit's planned spare parts requisition resource value, and the unit's emergency spare parts requisition resource value, obtain the predicted spare parts requisition resource value for the target time period.

[0186] In one embodiment, when the computer program is executed by the processor, it further performs the following steps: determining the planned spare parts requisition resource value corresponding to the target time period based on the maintenance plan, including:

[0187] Extract the maintenance items corresponding to the maintenance plan from the maintenance plan;

[0188] Based on the standard resource package for the maintenance project, determine the quantity of spare parts required for the maintenance plan corresponding to the target time period; the standard resource package includes the quantity and type of spare parts required for the maintenance project.

[0189] Based on the quantity of spare parts and the unit resource value of the spare parts, determine the planned resource requisition value corresponding to the target time period.

[0190] In one embodiment, when the computer program is executed by the processor, it further implements the following steps: the spare parts include a first spare part and a second spare part; based on the standard resource package of the maintenance project, the quantity of spare parts required for the maintenance plan corresponding to the target time period is determined, including:

[0191] Based on the standard resource package, determine the quantity of the first spare parts required for the maintenance plan corresponding to the target time period;

[0192] Based on the standard resource package, determine the quantity of the second spare parts required for the maintenance plan corresponding to the target time period;

[0193] The sum of the first spare parts quantity and the second spare parts quantity is determined as the spare parts quantity required for the maintenance plan corresponding to the target time period.

[0194] In one embodiment, when the computer program is executed by the processor, it also performs the following steps: linearly fitting the resource values ​​and maintenance durations of emergency maintenance spare parts requisition for historical annual and ten-year maintenance of the nuclear power plant to obtain the correspondence between the resource values ​​and maintenance durations of historical emergency spare parts requisition for the nuclear power plant.

[0195] In one embodiment, when the computer program is executed by the processor, it also performs the following steps: obtaining a unit production plan based on the nuclear power plant's preventive maintenance program document, periodic test supervision program document, and in-service inspection program document.

[0196] In one embodiment, when the computer program is executed by the processor, it further performs the following steps: determining the unit emergency spare parts requisition value for a target time period based on the historical average annual requisition value of emergency spare parts at the nuclear power plant, including:

[0197] According to the formula P=K*(a) n-1 *p n-1 +a n-2 *p n-2 +a n-3 *p n-3 ), determine the emergency spare parts requisition resource value per unit for the year corresponding to the target time period; where p is the emergency spare parts requisition resource value per unit for the year corresponding to the target time period, K is the number of units in the nuclear power plant, p n-1p represents the average annual emergency spare parts requisition value per unit of a nuclear power plant during the first time period. n-2 p represents the average annual emergency spare parts requisition value per unit of the nuclear power plant during the second time period. n-3 a represents the average annual emergency spare parts consumption per unit of the nuclear power plant during the third time period. n-1 a n-2 a n-3 Let a be the weight parameter. n-1 +a n-2 +a n-3 =1, a n-1 a n-2 a n-3 All are positive numbers; the third time period is earlier than the second time period, the second time period is earlier than the first time period, and the first time period is earlier than the target time period;

[0198] The unit's emergency spare parts requisition value for the target time period is determined based on the unit's emergency spare parts requisition resource value for the year corresponding to the target time period, the proportion of non-major maintenance time for the target time period, and the proportion of major maintenance time for the target time period.

[0199] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, data stored, data displayed, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties.

[0200] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, etc., and are not limited to these.

[0201] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0202] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A method for predicting the resource value of spare parts requisition in nuclear power plants, characterized in that, The method includes: Identify the maintenance plan corresponding to the target time period from the nuclear power plant's predicted maintenance plan, and determine the planned spare parts requisition resource value corresponding to the target time period based on the maintenance plan; Based on the correspondence between the historical emergency resource requisition values ​​and maintenance durations of the nuclear power plant, the emergency spare parts requisition value corresponding to the target time period is determined; Obtain the unit production plan of the nuclear power plant, and determine the unit planned spare parts requisition resource value corresponding to the target time period based on the unit production plan; Based on the historical average annual resource consumption value of emergency spare parts for the nuclear power plant, determine the unit emergency spare parts consumption value for the target time period. Based on the planned spare parts requisition resource value, the emergency spare parts requisition resource value, the unit's planned spare parts requisition resource value, and the unit's emergency spare parts requisition resource value, obtain the predicted spare parts requisition resource value corresponding to the target time period.

2. The method according to claim 1, characterized in that, The step of determining the planned spare parts requisition resource value corresponding to the target time period according to the maintenance plan includes: Extract the maintenance items corresponding to the maintenance plan from the maintenance plan; Based on the standard resource package of the maintenance project, determine the quantity of spare parts required for the maintenance plan corresponding to the target time period; the standard resource package includes the quantity and type of spare parts required for the maintenance project. Based on the quantity of the spare parts and the unit resource value of the spare parts, the planned resource requisition value corresponding to the target time period is determined.

3. The method according to claim 2, characterized in that, The spare parts include a first spare part and a second spare part. Determining the number of spare parts required for the maintenance plan corresponding to the target time period based on the standard resource package of the maintenance project includes: Based on the standard resource package, determine the quantity of the first spare parts required for the maintenance plan corresponding to the target time period; Based on the standard resource package, determine the quantity of the second spare parts required for the maintenance plan corresponding to the target time period; The sum of the first spare parts quantity and the second spare parts quantity is determined as the spare parts quantity required for the maintenance plan corresponding to the target time period.

4. The method according to any one of claims 1-3, characterized in that, The method further includes: Linear fitting was performed on the resource values ​​for emergency maintenance of nuclear power plants in historical annual and ten-year maintenance, as well as the maintenance duration, to obtain the correspondence between the resource values ​​for emergency maintenance of nuclear power plants in historical maintenance and the maintenance duration.

5. The method according to any one of claims 1-3, characterized in that, The method further includes: Based on the nuclear power plant's preventive maintenance program documents, periodic test and supervision program documents, and in-service inspection program documents, the unit's production plan is obtained.

6. The method according to any one of claims 1-3, characterized in that, The step of determining the unit emergency spare parts requisition value for the target time period based on the historical average annual requisition value of emergency spare parts for the nuclear power plant includes: According to the formula P=K*(a) n-1 *p n-1 +a n-2 *p n-2 +a n-3 *p n-3 The formula is used to determine the emergency spare parts requisition value per unit unit corresponding to the year in which the target time period falls; where p is the emergency spare parts requisition value per unit unit corresponding to the year in which the target time period falls, K is the number of units in the nuclear power plant, and p n-1 p represents the average annual emergency spare parts requisition value per unit of a nuclear power plant during the first time period. n-2 p represents the average annual emergency spare parts requisition value per unit of the nuclear power plant during the second time period. n-3 a represents the average annual emergency spare parts consumption per unit of the nuclear power plant during the third time period. n-1 a n-2 a n-3 Let a be the weight parameter. n-1 +a n-2 +a n-3 =1, a n-1 a n-2 a n-3 All are positive numbers; the third time period is earlier than the second time period, the second time period is earlier than the first time period, and the first time period is earlier than the target time period; The unit's emergency spare parts requisition value for the target time period is determined based on the unit's emergency spare parts requisition resource value for the year corresponding to the target time period, the proportion of non-major maintenance time for the target time period, and the proportion of major maintenance time for the target time period.

7. A device for predicting the resource value of spare parts requisition in nuclear power plants, characterized in that, The device includes: The first determining module is used to identify the maintenance plan corresponding to the target time period from the predicted maintenance plan of the nuclear power plant, and determine the planned spare parts requisition resource value corresponding to the target time period based on the maintenance plan; The second determining module is used to determine the emergency spare parts requisition value corresponding to the target time period based on the correspondence between the historical emergency resource requisition value and maintenance duration of the nuclear power plant. The third determining module is used to obtain the unit production plan of the nuclear power plant and determine the unit planned spare parts requisition resource value corresponding to the target time period based on the unit production plan. The fourth determining module is used to determine the unit emergency spare parts requisition resource value corresponding to the target time period based on the historical average annual requisition resource value of the nuclear power plant for emergency spare parts. The acquisition module is used to acquire the predicted spare parts requisition value corresponding to the target time period based on the planned spare parts requisition resource value, the sudden spare parts requisition resource value, the unit's planned spare parts requisition resource value, and the unit's sudden spare parts requisition resource value.

8. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the method according to any one of claims 1 to 6.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 6.

10. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 6.

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