Risk assessment method based on time correction and electronic device
By using a time-corrected risk assessment method to update the operational configuration information of industrial facilities, the problem of inaccurate reflection of equipment unavailability history is solved, and risks are made known and controllable, thus ensuring the safety and reliability of industrial facilities.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE CO LTD
- Filing Date
- 2026-01-28
- Publication Date
- 2026-05-12
AI Technical Summary
Existing technologies cannot accurately reflect the unavailability history of equipment in industrial facilities, resulting in lag and inaccuracy in operational risk assessment, and making it impossible to know and control risks.
By using a time-corrected risk assessment method, real-time information of the monitored objects is extracted, the set of withdrawn devices in the operation configuration information is updated to ensure the true reflection of the equipment's unavailability history, a probabilistic safety evaluation model is used to calculate risk quantification indicators, and operation recommendations are generated.
It ensures the accuracy of operational configuration information, guarantees the knowledge and controllability of operational risks, and enables timely adjustment of equipment status to reduce risks.
Smart Images
Figure CN121581665B_ABST
Abstract
Description
Technical Field
[0001] This application relates primarily to the field of safety management technology, and in particular to a time-corrected risk assessment method and electronic device. Background Technology
[0002] Random equipment failures can occur during the operation of industrial facilities. This, coupled with ongoing preventative maintenance leading to equipment isolation and unavailability, can result in a high-risk state for the industrial facilities. Existing methods monitor the operational status of industrial facilities in real time to detect operational risks. Specifically, the status of the monitored object is read at the monitoring trigger point. If new equipment is withdrawn, the monitoring time is used as the withdrawal time; if equipment is restored, the monitoring time is used as the restoration time. However, this data processing method often differs from the actual withdrawal and restoration times, exhibiting a certain lag and failing to accurately reflect the historical operational data of industrial facilities. For example, after on-site personnel isolate equipment within the facility and upload work orders, these orders may not include the creation time information, leading to data incompleteness and difficulty in accurately reflecting the unavailability history of withdrawn equipment. Summary of the Invention
[0003] The technical problem to be solved by this application is to provide a time-corrected risk assessment method and electronic device that can accurately reflect the unavailability history of the device, ensure the accuracy of the operational configuration information, and thus realize the knowability and controllability of operational risks.
[0004] To address the aforementioned technical problems, this application provides a time-corrected risk assessment method, comprising the following steps: extracting a state sequence from real-time information of a monitored object, the state sequence including a first set of withdrawn devices distributed over time; reading the operational configuration information of the monitored object, the operational configuration information including a second set of withdrawn devices distributed over time; obtaining newly withdrawn devices and recovered withdrawn devices at each moment based on the first and second sets of withdrawn devices; updating the second set of withdrawn devices based on the newly withdrawn devices and recovered withdrawn devices at each moment, wherein, in response to determining that each moment is a historical moment of the operational configuration information, the second set of withdrawn devices for subsequent moments affected by each moment is corrected, and in response to determining that each moment is a future moment of the operational configuration information, a new moment and a corresponding second set of withdrawn devices are added to the operational configuration information; and calculating the operational risk of the monitored object based on the updated operational configuration information.
[0005] In one embodiment of this application, obtaining the newly added and restored retreat devices at each moment based on the first retreat device set and the second retreat device set includes: obtaining the first retreat device set at each moment in the state sequence and the second retreat device set at the corresponding moment in the operation configuration information; calculating the difference between the first retreat device set and the second retreat device set to obtain the newly added retreat devices at each moment; and calculating the difference between the second retreat device set and the first retreat device set to obtain the restored retreat devices at each moment.
[0006] In one embodiment of this application, the real-time information includes work order information. In response to determining that each moment is a historical moment of the operation configuration information, correcting the second set of withdrawn devices for subsequent moments affected by each moment includes: obtaining the latest moment in the operation configuration information as a first moment; obtaining the actual recovery moment of each withdrawn device according to the work order information as a second moment; if each moment is less than or equal to the first moment, correcting the second set of withdrawn devices for all moments after each moment in the operation configuration information to the union of the second set of withdrawn devices for all moments and the newly added withdrawn devices for each moment; if the second moment is less than or equal to the first moment, correcting the second set of withdrawn devices for all moments after the second moment in the operation configuration information to the difference between the second set of withdrawn devices for all moments and the recovered withdrawn devices for the second moment.
[0007] In one embodiment of this application, the real-time information includes work order information. In response to determining that each moment is a future moment of the operation configuration information, adding a new moment and a corresponding second set of withdrawn devices to the operation configuration information includes: obtaining the latest moment in the operation configuration information as a first moment; obtaining the actual recovery moment of each withdrawn device according to the work order information as a second moment; if each moment is greater than the first moment, adding the newly added withdrawn devices at each moment as the latest second set of withdrawn devices to the operation configuration information; if the second moment is greater than the first moment, adding the difference between the second set of withdrawn devices at the first moment and the recovered withdrawn devices at each moment as the latest second set of withdrawn devices to the operation configuration.
[0008] In one embodiment of this application, the state sequence further includes a first operating / standby column and first operating state data distributed over time, and the operating configuration information further includes a second operating / standby column and second operating state data distributed over time. After the step of updating the second standby device set according to the newly added standby device and the restored standby device at each moment, the method further includes: determining whether the latest first operating / standby column and first operating state data in the state sequence are the same as the latest second operating / standby column and second operating state data in the operating configuration information; when the latest first operating / standby column is different from the latest second operating / standby column and / or the latest first operating state data is different from the latest second operating state data, the latest first operating / standby column and the latest first operating state data are used as the latest second operating / standby column and second operating state data and added to the operating configuration information.
[0009] In one embodiment of this application, calculating the operational risk of the monitored object based on the updated operational configuration information includes: using a probabilistic safety assessment model to calculate a risk quantification index of the operational configuration information, wherein the risk quantification index includes the core damage frequency and the early mass release frequency; obtaining the current configuration information at the current moment from the operational configuration information, and calculating the risk quantification index of the current configuration information.
[0010] In one embodiment of this application, after calculating the operational risk of the monitored object based on the updated operational configuration information, the method further includes: generating operational suggestions based on the operational risk, the operational suggestions including suggestions to prioritize the recovery of equipment and suggestions for equipment with high risk; and visualizing the operational risk of the monitored object and the operational suggestions.
[0011] In one embodiment of this application, the real-time information includes real-time database system information, production management system information, and main control room log information, wherein the production management system information includes work order information, isolation information, and operating restriction information.
[0012] This application also proposes an electronic device comprising: a memory for storing instructions executable by a processor; and a processor for executing the instructions to implement the method described above.
[0013] This application also proposes a computer storage medium storing computer program code that, when executed by a processor, implements the method described above.
[0014] This application also proposes a computer program product including computer program code, which, when executed by one or more processors, implements the steps described above.
[0015] Compared with the prior art, this application has the following advantages: by adding and restoring withdrawn devices at each moment, the second set of withdrawn devices in the operation configuration information is updated, so that the second set of withdrawn devices in the operation configuration information can truly reflect the history of device unavailability, thereby ensuring the accuracy of the operation configuration information and further enabling the knowledge and controllability of operation risks. Attached Figure Description
[0016] The accompanying drawings are included to provide a further understanding of this application; they are incorporated into and constitute a part of this application. The drawings illustrate embodiments of this application and, together with this specification, serve to explain the principles of this application. In the drawings:
[0017] Figure 1 This is a flowchart illustrating a time-corrected risk assessment method according to an embodiment of this application;
[0018] Figure 2 This is a schematic diagram of the process for retrieving real-time information of a monitored object in one embodiment of this application;
[0019] Figure 3 This is a schematic diagram of the process of acquiring newly added and withdrawn equipment and restoring withdrawn equipment in one embodiment of this application;
[0020] Figure 4 This is a schematic flowchart of the modified second retreat device set in one embodiment of this application;
[0021] Figure 5 This is a flowchart illustrating the addition of a second set of retreating devices in one embodiment of this application;
[0022] Figure 6 This is a schematic diagram of the process for calculating operational risk in one embodiment of this application;
[0023] Figure 7 This is a schematic diagram of a visual interface for risk quantification indicators and operational recommendations in one embodiment of this application;
[0024] Figure 8 This is a schematic diagram of the structure of a risk assessment system according to an embodiment of this application;
[0025] Figure 9 This is a schematic diagram of the structure of an electronic device according to an embodiment of this application. Detailed Implementation
[0026] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are merely some examples or embodiments of this application. For those skilled in the art, these drawings can be applied to other similar scenarios without creative effort. Unless obvious from the context or otherwise specified, the same reference numerals in the drawings represent the same structures or operations.
[0027] As indicated in this application and claims, unless the context clearly indicates otherwise, the words "a," "an," "an," and / or "the" are not specifically singular and may include plural forms. Generally speaking, the terms "comprising" and "including" only indicate the inclusion of explicitly identified steps and elements, which do not constitute an exclusive list, and the method or apparatus may also include other steps or elements.
[0028] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.
[0029] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, these terms have no special meaning and therefore should not be construed as limiting the scope of protection of this application. In addition, although the terminology used in this application is selected from commonly known and used terms, some terms mentioned in this application's specification may have been chosen by the applicant according to his or her judgment, and their detailed meanings are explained in the relevant sections of this description. Moreover, this application should be understood not only through the actual terms used, but also through the meaning implied by each term.
[0030] It should be understood that when a component is referred to as "on another component," "connected to another component," "coupled to another component," or "in contact with another component," it can be directly on, connected to, coupled to, or in contact with that other component, or there may be an intervening component. In contrast, when a component is referred to as "directly on another component," "directly connected to," "directly coupled to," or "directly in contact with" another component, there is no intervening component. Similarly, when a first component is referred to as "electrically contacting" or "electrically coupled to" a second component, there is an electrical path between the first and second components that allows current to flow. This electrical path may include capacitors, coupled inductors, and / or other components that allow current to flow, even if there is no direct contact between the conductive components.
[0031] This application uses flowcharts to illustrate the operations performed by the system according to embodiments of this application. It should be understood that the preceding or following operations are not necessarily performed precisely in sequence. Instead, various steps can be processed in reverse order or simultaneously. Furthermore, other operations may be added to these processes, or one or more steps may be removed from these processes. The technical solutions of this application will now be described through specific embodiments.
[0032] refer to Figure 1 The flowchart of a time-corrected risk assessment method in one embodiment is shown. The method includes the following steps.
[0033] Step S101: Extract the state sequence from the real-time information of the monitored object. The state sequence includes a first set of withdrawn devices distributed over time.
[0034] In this step, the data sources for the real-time information of the monitored object include a real-time database system, a production management system, and a control room log. The real-time information includes information from the real-time database system, the production management system, and the control room log. The real-time database system information includes data such as temperature, pressure, power, and equipment operating status retrieved from the real-time database system. The production management system information includes work orders, isolation, and Levels of Operation (LCO) information retrieved from the production management system. The control room log information includes operation records retrieved from the control room log, along with information on affected equipment, operation start time, and operation completion time. In some embodiments, the control room log has an LCO information recording function, and the real-time information also includes LCO information retrieved from the control room log.
[0035] In some embodiments, such as Figure 2As shown, a nuclear power plant is used as the monitoring object, and real-time information of the monitoring object is obtained through a risk monitor. The real-time database system includes a PI (Plant Information System). The methods for retrieving real-time information from the real-time database system include: determining the range of equipment to be read through the PI mapping database, then remotely connecting to the PI server, reading the PI point data objects in the PI point dataset, and then obtaining parameter information through data snapshots of the PI point data objects. Work order information in the production management system includes equipment number (also known as functional location), isolation number (including one or more isolation numbers), actual start time, and work order number. The methods for retrieving real-time information from the production management system include: querying the actual completion time of completed work orders by work order number, and retrieving isolation information by isolation number. Isolation information includes the isolated tagged equipment, the isolation start time, and the isolation release completion time. Retrieving real-time information from the main control room log includes: identifying unavailable equipment (corresponding to...) through the information retrieved from the main control room log. Figure 2 The LCO information includes the affected equipment and its unavailability time (including operation start time and operation completion time). LCO information can be retrieved from the production management system or from the main control room log. The retrieved LCO information includes the LCO clause triggered by the nuclear power plant, the affected equipment, the LCO entry time, and the LCO exit time.
[0036] In some embodiments, a nuclear power plant is used as the monitoring object, and the real-time information of the monitoring object further includes: determining the operating / standby status of the monitoring object through typical equipment status parameters in the PI system (such as the operating / standby status of the pump, the inlet and outlet temperature difference of the heat exchanger, etc.).
[0037] In some embodiments, a nuclear power plant is used as the monitoring object, and the real-time information of the monitoring object also includes: determining the operating status data of the nuclear power plant through parameters such as reactor power change rate, primary loop pressure and temperature.
[0038] In this step, the withdrawing devices at each moment are extracted from the retrieved real-time information of the monitored objects according to the time sequence, and integrated into a state sequence. This state sequence represents the state of the monitored objects distributed over time. The state sequence includes a first set of withdrawing devices distributed over time. In other words, each element of the state sequence represents the state of the monitored object at the current moment, which includes the withdrawing devices within the monitored object at the current moment, i.e., the first set of withdrawing devices.
[0039] In some embodiments, the state sequence further includes a first running / standby column and first running status data distributed over time. It should be noted that the state sequence may include one or both of the first running / standby column and the first running status data. For example, the state sequence is... ,in, The number of elements in the state sequence, each element for The status of the monitored object at all times. include The first set of retreat equipment at the moment , Also includes First running / standby column at any time and first running status data .
[0040] Step S102: Read the operation configuration information of the monitored object. The operation configuration information includes a second set of withdrawn devices distributed over time.
[0041] In this step, the stored operational configuration information of the monitored object is read. This operational configuration information is time-series data, including a second set of retreated devices distributed over time. In other words, each element of the operational configuration information represents the operational configuration of the monitored object at the current moment, including the retreated devices within the monitored object at the current moment, i.e., the second set of retreated devices. For example, the monitored object has a local database that stores the operational configuration information of the monitored object over a period of time. The operational configuration information of the monitored object can be read from the local database, or it can be written to the local database. It is understood that the methods of storing and reading the operational configuration information of the monitored object are not limited to the embodiments described above. In some embodiments, the operational configuration information also includes a second operational / standby column and second operational status data distributed over time.
[0042] Step S103: Obtain the newly added and restored retreating devices at each moment based on the first retreating device set and the second retreating device set.
[0043] Specifically, the newly added retreat device at each moment is the retreat device added to the first retreat device set in the current moment's state sequence compared to the second retreat device set in the running configuration information, and the retreat device restored at each moment is the retreat device restored to the second retreat device set in the current moment's running configuration information compared to the first retreat device set in the state sequence.
[0044] With state sequence and runtime configuration information For example, see reference. Figure 3 The flowchart shown in one embodiment illustrates the process of acquiring newly added and withdrawn devices and restoring withdrawn devices, including the following steps.
[0045] Step S301: Obtain the first set of retreated devices at each moment in the state sequence and the second set of retreated devices at the corresponding moment in the operation configuration information. Specifically, in the state sequence... for The elements corresponding to each moment include the first set of retreat devices at the current moment. In the runtime configuration information for The elements corresponding to the current moment include the set of second retreat devices at the current moment. .
[0046] Step S302: Calculate the difference between the first set of withdrawn devices and the second set of withdrawn devices to obtain the newly withdrawn devices at each time step. Specifically, in At time t, calculate the difference between the first set of retreating equipment and the second set of retreating equipment, i.e. , to obtain the newly added retreating equipment at the current moment.
[0047] Step S303: Calculate the difference between the second set of withdrawn devices and the first set of withdrawn devices to obtain the recoverable withdrawn devices at each time step. Specifically, in At time 1, calculate the difference between the second set of retreating equipment and the first set of retreating equipment, i.e. , obtain the recovery and withdrawal equipment at the current moment.
[0048] For example, in this step, at a certain moment, the first set of retreated devices includes retreated device A, retreated device B, and retreated device C, and at the corresponding moment, the second set of retreated devices includes retreated device B, retreated device C, and retreated device D. Then, the newly added retreated device is retreated device A, and the restored retreated device is retreated device D.
[0049] Step S104: Update the second set of retreated devices based on the newly added retreated devices and restored retreated devices at each moment. In response to determining that each moment is a historical moment of the running configuration information, the second set of retreated devices for subsequent moments affected by each moment of the running configuration information is corrected. In response to determining that each moment is a future moment of the running configuration information, a new moment and the corresponding second set of retreated devices for that moment are added to the running configuration information.
[0050] In some embodiments, determining whether each moment is a historical moment of the running configuration information involves comparing each moment with the latest moment of the running configuration information; if the current moment is less than or equal to the latest moment, then that moment is considered a historical moment. For example... Figure 4As shown, correcting the second set of withdrawn devices includes the following steps: Step S401, obtaining the latest time in the operation configuration information as the first time. Step S402, obtaining the actual recovery time of each withdrawn device based on the work order information as the second time. Specifically, retrieving the work order information corresponding to the withdrawn device from the real-time information of the monitored object to obtain the actual recovery time of each withdrawn device. Step S403, if each time is less than or equal to the first time, correcting the second set of withdrawn devices for all times after each time in the operation configuration information to the union of the second set of withdrawn devices for all times and the newly added withdrawn devices for each time. Step S404, if the second time is less than or equal to the first time, correcting the second set of withdrawn devices for all times after the second time in the operation configuration information to the difference between the second set of withdrawn devices for all times and the withdrawn devices at the second time.
[0051] In some embodiments, determining whether each moment is a future moment of the running configuration information involves comparing each moment with the latest moment of the running configuration information; if the current moment is greater than the latest moment, then the current moment is considered a future moment. For example... Figure 5 As shown, adding a second set of withdrawn devices includes the following steps: Step S501, obtaining the latest time from the operation configuration information as the first time. Step S502, obtaining the actual recovery time of each withdrawn device based on the work order information as the second time. Specifically, retrieving the work order information corresponding to the withdrawn device from the real-time information of the monitored object to obtain the actual recovery time of each withdrawn device. Step S503, if each time is greater than the first time, adding the newly withdrawn devices at each time as the latest second set of withdrawn devices to the operation configuration information. Step S504, if the second time is greater than the first time, the difference between the second set of withdrawn devices at the first time and the withdrawn devices at each time as the latest second set of withdrawn devices to the operation configuration.
[0052] For example, the state sequence is represented as The runtime configuration information is represented as ,in, The first set of retreat devices in the state sequence at time t is , The second set of retreat devices in the runtime configuration information at any given time is Step S103 Obtain Adding new retreat equipment at any time and recovery of withdrawn equipment The latest moment when the runtime configuration information is obtained, i.e., the first moment, is represented as... The second set of retreat equipment at the first moment is Based on the work order information, obtain the actual recovery time of each recovered and withdrawn device, i.e., the second time, denoted as... The second moment of recovery and withdrawal of equipment is represented as The time is adjusted based on the actual recovery time of the withdrawn equipment (i.e., the second moment) to ensure that the withdrawal and recovery times of the equipment in the operation configuration information are consistent with the actual withdrawal and recovery times, thereby accurately reflecting the current operating status and historical operation configuration of the nuclear power plant.
[0053] if The time is less than or equal to the first time. ,show The time frame represents a historical moment in the runtime configuration information. All moments after time i From moment to first moment All moments in between. The set of second retreat devices for all times after time point is corrected to the set of second retreat devices for all times. The union of the newly added and withdrawn devices at any given time, for example: The second set of retreat equipment at the moment Revised to the second set of retreat equipment and Adding new retreat equipment at any time The union of, i.e. For the revised version The second set of retreating devices at that moment. If The time is less than or equal to the first time. ,show The time frame represents a historical moment in the runtime configuration information. All moments after time i From moment to first moment All moments in between. The set of second retreat devices for all times after time point is corrected to the set of second retreat devices for all times. The difference between the recovery and withdrawal devices at different times, for example: The second set of retreat equipment at the moment Revised to the second set of retreat equipment and Adding new retreat equipment at any time The difference set, i.e. For the revised version The second set of retreating equipment at that moment.
[0054] if The time is greater than the first time. ,show If the time is a future time for running the configuration information, then... Adding new retreat equipment at any time As the latest second set of retreat devices, it adds to the operational configuration information. Time and The latest set of second retreat devices corresponding to the given time. If The time is greater than the first time. ,show If the time is a future time for running the configuration information, then the first time will be used. Second withdrawal equipment set and Real-time recovery and withdrawal of equipment The difference set, i.e. As the latest second set of retreat devices, it adds to the operational configuration information. Time and The latest set of second retreat devices corresponding to each moment.
[0055] In some embodiments, the state sequence further includes a first running / standby column and first running status data distributed over time, and the running configuration information further includes a second running / standby column and second running status data distributed over time. The risk assessment method proposed in this application further includes updating the second running / standby column and second running status data after step S104. Specifically, it is determined whether the latest first running / standby column and first running status data in the state sequence are the same as the latest second running / standby column and second running status data in the running configuration information. When the latest first running / standby column is different from the latest second running / standby column and / or the latest first running status data is different from the latest second running status data, it indicates that the running configuration information has changed and needs to be updated. That is, the latest first running / standby column and the latest first running status data are added to the running configuration information as the latest second running / standby column and second running status data to reflect the latest running / standby column and running status. For example, the latest time of the state sequence is... The latest first running / standby column is represented as The latest first running status data is represented as The latest time of the running configuration information is The latest second running / standby column is represented as The latest second running status data is represented as When the latest first running / alternate column With the latest second run / standby column Different and / or latest first running status data With the latest second operating status data If not, then First running / standby column at any time and first running status data As the latest time-sensitive second running / standby column and second running status data, this is added to the running configuration information. Time and The latest second running / standby column and second running status data corresponding to the current moment.
[0056] Step S105: Calculate the operational risk of the monitored object based on the corrected operational configuration information.
[0057] refer to Figure 6 The flowchart illustrating the calculation of operational risk in one embodiment includes the following steps: Step S601, using a Probabilistic Safety Assessment (PSA) model to calculate risk quantification indicators for the operational configuration information. These risk quantification indicators include Core Damage Frequency (CDF) and Large Early Release Frequency (LERF). It should be noted that appropriate known methods can be selected to calculate the risk quantification indicators based on the actual scenario. Specifically, a PSA model is built based on the updated operational configuration information to calculate the corresponding risk quantification indicators. Step S602, obtaining the current configuration information from the operational configuration information and calculating the risk quantification indicators for the current configuration information.
[0058] In some embodiments, after step S105, the method further includes: generating operational recommendations based on operational risks, the operational recommendations including recommendations to prioritize the recovery of equipment and recommendations for equipment with significant risks; and visualizing the operational risks and operational recommendations of the monitored objects. (Reference) Figure 7 The diagram illustrates a visualization of risk quantification indicators and operational recommendations in one embodiment. The "Current Risk Status of the Power Plant" displays the risk quantification indicators (including CDF and LERF) of the current configuration information. Risk statuses include green, yellow, and red zones. Figure 7 The current risk status shown is in the yellow zone, indicating that risk control is needed, maintenance should be completed as soon as possible, and compensatory measures may be required. "Currently withdrawn equipment" includes components BEDG-EDG-02, RCVC-S02-11A-TPC, and RRHR-S08-01A-TPC, each with a corresponding withdrawal time and reason. "Operational recommendations" include "Priority Recovery Equipment (CDF)" and "Risk-Important Equipment (CDF)" based on the CDF index. "Risk-Important Equipment" indicates that if this equipment fails, the nuclear power plant's risk will increase dramatically, and the risk status will enter the red zone. Based on the risk quantification index of the operational configuration information calculated in step S601, the following diagram is drawn: Figure 7The "historical risk curve" shown clearly illustrates the changes in the risk status of nuclear power plants over time.
[0059] refer to Figure 8 The diagram illustrates the structure of a risk assessment system in one embodiment. The risk assessment system 800 is used to execute the method described above and includes an information retrieval unit 810 and a risk assessment unit 820. The information retrieval unit 810 retrieves real-time information about the monitored object, such as real-time database system information, production management system information, and control room logs. The risk assessment unit 820 executes steps S101 to S105 as described above and includes a time series extraction module 821, a retreat equipment extraction module 822, a historical configuration correction module 823, and a risk calculation update module 825. The time series extraction module 821 is used to execute step S101 to extract the state sequence from the real-time information; the withdrawal device extraction module 822 is used to execute steps S102 and S103 to obtain the newly added withdrawal devices and restored withdrawal devices at each moment according to the state sequence and operation configuration information; the historical configuration correction module 823 is used to execute step S104 to update the second withdrawal device set in the operation configuration information; and the risk calculation update module 825 is used to execute step S105 to calculate the operation risk of the monitored object according to the updated operation configuration information. In some embodiments, the historical configuration correction module 823 can further update the second operation / standby column and the second operation status data in the operation configuration information. In some embodiments, the risk assessment unit 820 also includes a current configuration identification module 824 to obtain the current configuration information at the current moment and calculate the risk quantification index of the current configuration information in the risk calculation update module 825.
[0060] An embodiment of this application also proposes a method such as Figure 9 The electronic device 900 shown. According to... Figure 9 The electronic device 900 may include an internal communication bus 901, a processor 902, a read-only memory (ROM) 903, a random access memory (RAM) 904, and a communication port 905. When used in a personal computer, the electronic device may also include a hard disk 906.
[0061] The internal communication bus 901 enables data communication between components of the electronic device 900. The processor 902 can perform judgments and issue prompts. In some embodiments, the processor 902 may consist of one or more processors. The communication port 905 enables data communication between the electronic device 900 and external devices. In some embodiments, the electronic device 900 can send and receive information and data from a network through the communication port 905.
[0062] Electronic device 900 may also include different forms of program storage units and data storage units, such as hard disk 906, read-only memory (ROM) 903, and random access memory (RAM) 904, capable of storing various data files used for computer processing and / or communication, as well as possible program instructions executed by processor 902. The processor executes these instructions to implement the main parts described above. The results of processor processing are transmitted to user equipment via a communication port and displayed on a user interface.
[0063] This application also proposes a computer-readable medium storing computer program code that, when executed by a processor, implements the method described above.
[0064] In addition, this application also proposes a computer program product, including computer program code, which, when executed by one or more processors, enables the implementation of the steps described above.
[0065] The basic concepts have been described above. Obviously, for those skilled in the art, the above disclosure is merely illustrative and does not constitute a limitation of this application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and corrections to this application. Such modifications, improvements, and corrections are suggested in this application, and therefore remain within the spirit and scope of the exemplary embodiments of this application.
[0066] Furthermore, this application uses specific terms to describe embodiments of the application. For example, "an embodiment," "one embodiment," and / or "some embodiments" refer to a particular feature, structure, or characteristic related to at least one embodiment of the application. Therefore, it should be emphasized and noted that "an embodiment," "one embodiment," or "an alternative embodiment" mentioned twice or more in different locations in this specification do not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of the application can be appropriately combined.
[0067] Similarly, it should be noted that, in order to simplify the description of the present application and thus aid in the understanding of one or more embodiments, the foregoing description of the embodiments of the present application sometimes combines multiple features into a single embodiment, drawing, or description thereof. However, this disclosure method does not imply that the subject matter of the present application requires more features than those mentioned in the claims. In fact, the embodiments contain fewer features than all the features of the single embodiments disclosed above.
[0068] Although this application has been described with reference to specific embodiments, those skilled in the art should recognize that the above embodiments are only used to illustrate this application, and various equivalent changes or substitutions can be made without departing from the spirit of this application. Therefore, any changes or modifications to the above embodiments within the essential spirit of this application will fall within the scope of the claims of this application.
Claims
1. A time-adjusted risk assessment method, characterized in that, The monitoring of nuclear power plants includes the following steps: Extract a state sequence from the real-time information of the monitored object, the state sequence representing the state of the monitored object distributed over time, the state sequence including a first set of withdrawn devices distributed over time; Read the operation configuration information of the monitored object, the operation configuration information representing the stored operation configuration of the monitored object, the operation configuration information including a second set of withdrawn devices distributed over time; The newly added and restored retreating devices are obtained at each moment based on the first retreating device set and the second retreating device set; Based on the newly added and restored withdrawn devices at each moment, the second withdrawn device set is updated, wherein in response to determining that each moment is a historical moment of the operation configuration information, the second withdrawn device set for subsequent moments affected by each moment is corrected, and in response to determining that each moment is a future moment of the operation configuration information, a new moment and the corresponding second withdrawn device set for that moment are added to the operation configuration information; and Calculate the operational risk of the monitored object based on the updated operational configuration information; The real-time information includes work order information. The step of correcting the second set of withdrawn devices in subsequent moments of the operation configuration information affected by each moment, in response to determining that each moment is a historical moment of the operation configuration information, includes: obtaining the latest moment in the operation configuration information as a first moment; obtaining the actual recovery moment of each withdrawn device according to the work order information as a second moment; if each moment is less than or equal to the first moment, then correcting the second set of withdrawn devices in all moments after each moment in the operation configuration information to the union of the second set of withdrawn devices in all moments and the newly added withdrawn devices in each moment; if the second moment is less than or equal to the first moment, then correcting the second set of withdrawn devices in all moments after the second moment in the operation configuration information to the difference between the second set of withdrawn devices in all moments and the recovered withdrawn devices in the second moment. In response to determining that each time moment is a future time moment of the operation configuration information, the step of adding a new time moment and a corresponding second set of retreated devices to the operation configuration information includes: obtaining the latest time moment in the operation configuration information as a first time moment; obtaining the actual recovery time of each of the recovered retreated devices according to the work order information as a second time moment; if each time moment is greater than the first time moment, adding the newly added retreated devices at each time moment as the latest second set of retreated devices to the operation configuration information; if the second time moment is greater than the first time moment, adding the difference between the second set of retreated devices at the first time moment and the recovered retreated devices at each time moment as the latest second set of retreated devices to the operation configuration information.
2. The method as described in claim 1, characterized in that, The newly added and restored retreating devices at each moment are obtained based on the first and second retreating device sets, including: Obtain the first set of retreated devices at each moment in the state sequence and the second set of retreated devices at the corresponding moment in the operation configuration information; Calculate the difference between the first set of withdrawn devices and the second set of withdrawn devices to obtain the newly withdrawn devices at each time step; and Calculate the difference between the second set of withdrawn devices and the first set of withdrawn devices to obtain the recovery withdrawn devices at each time step.
3. The method as described in claim 1, characterized in that, The state sequence further includes a first operating / standby column and first operating state data distributed over time. The operating configuration information further includes a second operating / standby column and second operating state data distributed over time. After the step of updating the second set of standby devices based on the newly added and restored standby devices at each moment, the system further includes: Determine whether the latest first running / standby column and first running status data in the status sequence are the same as the latest second running / standby column and second running status data in the running configuration information. If the latest first running / standby column is different from the latest second running / standby column and / or the latest first running status data is different from the latest second running status data, then the latest first running / standby column and the latest first running status data are added to the running configuration information as the latest second running / standby column and second running status data.
4. The method as described in claim 1, characterized in that, The operational risks of the monitored objects are calculated based on the updated operational configuration information, including: The risk quantification index of the operational configuration information is calculated using a probabilistic safety evaluation model. The risk quantification index includes the core damage frequency and the early mass release frequency. Obtain the current configuration information at the current moment from the running configuration information, and calculate the risk quantification index of the current configuration information.
5. The method as described in claim 1, characterized in that, After calculating the operational risk of the monitored object based on the updated operational configuration information, the process also includes: Based on the operational risks, operational recommendations are generated, including recommendations to prioritize the recovery of equipment and recommendations for equipment with significant risks. Visualize the operational risks of the monitored object and the operational recommendations.
6. The method as described in claim 1, characterized in that, The real-time information includes real-time database system information, production management system information, and main control room log information. The production management system information includes work order information, isolation information, and operating restriction information.
7. An electronic device, comprising: Memory is used to store instructions that can be executed by the processor; as well as A processor for executing the instructions to implement the method as described in any one of claims 1-6.
8. A computer storage medium storing computer program code, said computer program code implementing the method as claimed in any one of claims 1-6 when executed by a processor.
9. A computer program product comprising computer program code, wherein when the computer program code is executed by one or more processors, the one or more processors implement the steps of the method as described in any one of claims 1-6.