Instrument control equipment grading method and system based on DCS parallel system
By simulating the fault of instrument control equipment in the DCS parallel system and reading the characteristic parameter values, and automatically determining the equipment criticality level in combination with the classification rules, the problems of inefficiency of traditional classification methods and human errors are solved, and more efficient and accurate instrument control equipment grading is achieved.
Patent Information
- Application Number
- CN202411824334.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2025-04-25
AI Technical Summary
The traditional grading of instrument control equipment relies on manual analysis of drawings and documents, resulting in inefficiency and human errors, which cannot effectively reflect the actual impact of instrument control equipment on the operation of nuclear power plants.
The instrument control equipment grading method based on the DCS parallel system is adopted. By introducing instrument control equipment failures in the DCS parallel system, simulate operation and read characteristic parameter values, and match them in combination with the grading rules to automatically determine the criticality level of the equipment and generate a report.
It improves the efficiency and accuracy of grading instrument control equipment, reduces human errors, reduces labor costs, and can objectively reflect the criticality of instrument control equipment to the operation of nuclear power plants.
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Figure CN119884810A_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the technical field of instrumentation and control equipment classification, and in particular, relates to an instrumentation and control equipment classification method and system based on a DCS parallel system. Background Art
[0002] In the equipment reliability management system, equipment classification is the foundation of the equipment reliability management system. As important equipment in nuclear power plants, the speed and quality of improving the classification of instrumentation and control equipment are directly related to the effectiveness of the reliability management of instrumentation and control equipment.
[0003] At present, the classification of instrumentation and control equipment often relies on instrumentation and control personnel to read a large amount of drawings and documents manually, which is not only time-consuming and labor-intensive, but also inevitably leads to human errors. Summary of the invention
[0004] The purpose of the present application is to provide an instrumentation and control equipment classification method and system based on a DCS parallel system, which solves the problem that the actual unit cannot introduce actual equipment failures and monitor the actual impact on the unit operation, and the traditional equipment classification work can only be done by checking a large number of manuals, drawings and reports, and making subjective judgments based on the experience and technical capabilities of personnel, effectively improving the efficiency of instrumentation and control equipment classification in nuclear power plants, reducing human errors, and reducing labor costs.
[0005] In order to achieve the above objectives, this application provides the following technical solutions:
[0006] In a first aspect, the present application provides a classification method for nuclear power plant instrumentation and control equipment based on a DCS parallel system, comprising:
[0007] S1. By introducing instrumentation and control equipment failures into the DCS parallel system based on nuclear power simulation technology, and determining the criticality level of the instrumentation and control equipment according to the response of the DCS parallel system after the failure and the instrumentation and control equipment classification rules;
[0008] S2. Set the criticality level of the nuclear power plant instrumentation and control equipment according to the grade identification of the nuclear power plant process equipment;
[0009] S3. Through DCS parallel system settings, fault simulation, characteristic parameter reading and matching classification rules, risk assessment and classification management of instrumentation and control equipment are realized, and relevant reports are generated;
[0010] S4. Build a fault library, formulate classification rules, simulate fault insertion, read characteristic parameters, determine criticality levels, store classification results, and generate reports.
[0011] Furthermore, in S2, the criticality levels of the nuclear power plant instrumentation and control equipment are set to four levels: CC1, CC2, NC, and RTM.
[0012] Furthermore, S3 includes:
[0013] S3.1. Set the DCS parallel system to restore to the specified operating condition;
[0014] S3.2, insert the specified instrumentation and control equipment fault into the DCS parallel system;
[0015] S3.3, run and read the specified characteristic parameter values in the DCS parallel system;
[0016] S3.4. Match the characteristic parameter value with the instrumentation and control equipment classification rules to determine the instrumentation and control equipment classification;
[0017] S3.5. Store the instrumentation and control equipment classification results and generate an instrumentation and control equipment classification report.
[0018] Furthermore, S4 includes:
[0019] S4.1. Build an I&C equipment fault database based on the I&C equipment list and I&C equipment fault categories of nuclear power plants;
[0020] S4.2. According to the guidance for classification of nuclear power plant equipment and the impact of instrumentation and control equipment failure on the operation of nuclear power plant process equipment, the instrumentation and control equipment classification rules based on the reverse deduction of nuclear power plant process equipment are formed;
[0021] S4.3, through the data interface with the DCS parallel system, send the command of inserting the specified instrumentation and control equipment fault to the DCS parallel system;
[0022] S4.4, through the data interface with the DCS parallel system, read the characteristic parameter value after the instrumentation and control equipment fails;
[0023] S4.5. Match the extracted characteristic parameter value with the judgment condition of the rule base to determine the criticality level of the instrumentation and control equipment;
[0024] S4.6. Store the criticality classification results of instrumentation and control equipment;
[0025] S4.7. Output the criticality classification results of instrumentation and control equipment according to the specified format and generate an instrumentation and control equipment criticality classification report.
[0026] Furthermore, S4.1 includes:
[0027] Obtain the latest list of I&C equipment from nuclear power plants;
[0028] According to historical data and expert experience, I&C equipment failures are classified into different categories;
[0029] Ensure that the fault naming in the fault library is consistent with that in the DCS parallel system;
[0030] Enter the fault classification and related information into the fault database to form a structured data table.
[0031] Furthermore, S4.2 includes:
[0032] Analyze the impact of instrumentation and control equipment failure on the safety, reliability and economy of process equipment operation;
[0033] Formulate classification rules for instrumentation and control equipment and clarify the classification standards and conditions for each level;
[0034] Verify the rationality and effectiveness of the rules.
[0035] Furthermore, the data transmission between the instrumentation and control equipment hierarchical tool software and the DCS parallel system includes:
[0036] Instructions to start the DCS parallel system;
[0037] Instructions for setting the DCS parallel system to the initial operation scenario of the nuclear power plant;
[0038] Control instructions issued to the DCS parallel system;
[0039] Read the operating characteristic parameter values of the DCS parallel system after inserting the instrumentation and control fault.
[0040] In a second aspect, the present application provides a nuclear power plant instrumentation and control equipment classification system based on a DCS parallel system, comprising:
[0041] The automatic introduction module of instrumentation and control equipment faults is used to send instructions to insert specified instrumentation and control equipment faults to the DCS parallel system;
[0042] The instrumentation and control equipment failure consequence feature extraction module is used to read the characteristic parameter values after the instrumentation and control equipment failure is inserted;
[0043] The fault consequence feature and rule base matching algorithm module is used to match the extracted feature parameter value with the judgment condition of the rule base to determine the criticality level of the instrumentation and control equipment;
[0044] The I&C equipment criticality classification report automatic generation module is used to output the I&C equipment criticality classification results according to the specified format and generate the I&C equipment criticality classification report;
[0045] The instrumentation and control equipment criticality classification result database is used to store the instrumentation and control equipment criticality classification results;
[0046] Instrumentation and control equipment fault database, used to enter fault classification and related information;
[0047] The I&C equipment management and supervision classification rule base forms I&C equipment classification rules based on reverse deduction of nuclear power plant process equipment according to the nuclear power plant equipment classification guidelines and the impact of I&C equipment failures on the operation of nuclear power plant process equipment.
[0048] In a third aspect, the present application provides an electronic device including a memory and a processor, wherein the memory stores computer-readable instructions, and the processor implements the nuclear power plant instrumentation and control equipment classification method when executing the computer-readable instructions.
[0049] In a fourth aspect, the present application provides a computer-readable storage medium, in which computer-readable instructions are stored. When the computer-readable instructions are executed, the nuclear power plant instrumentation and control equipment classification method is implemented.
[0050] Compared with the prior art, the instrumentation and control equipment classification method and system based on the DCS parallel system provided by the present application has the following beneficial effects:
[0051] This application introduces instrumentation and control equipment failures in the DCS parallel system, and then classifies the instrumentation and control equipment of the nuclear power plant according to the simulation operation results of the DCS parallel system. This can objectively reflect the criticality of the instrumentation and control equipment to the operation of the nuclear power plant. Compared with the traditional method of manually analyzing drawings, manuals and other documents, it does not have high requirements on the experience and professional skills of technical personnel, and can effectively avoid human errors. In addition, compared with the traditional method, the classification of instrumentation and control equipment is more efficient and quick. BRIEF DESCRIPTION OF THE DRAWINGS
[0052] In order to more clearly illustrate the technical solution of the present application, the following is a brief introduction to the drawings required for the technical description.
[0053] Figure 1 A flow chart of a classification method for nuclear power plant instrumentation and control equipment based on a DCS parallel system provided in this application;
[0054] Figure 2 Business flow chart of classification of nuclear power plant instrumentation and control equipment based on DCS parallel system provided for this application;
[0055] Figure 3 A schematic diagram of the structure of a nuclear power plant instrumentation and control equipment hierarchical system based on a DCS parallel system provided in this application. DETAILED DESCRIPTION
[0056] The following is further explained in detail through specific implementation methods.
[0057] like Figure 1 and Figure 2 As shown, the present application provides a classification method for nuclear power plant instrumentation and control equipment based on a DCS parallel system, including:
[0058] S1. By introducing instrumentation and control equipment failures into the DCS parallel system based on nuclear power simulation technology, and determining the criticality level of the instrumentation and control equipment according to the response of the DCS parallel system after the failure and the instrumentation and control equipment classification rules;
[0059] S2. According to the CC1, CC2, NC, and RTM level identifications of nuclear power plant process equipment, the criticality levels of nuclear power plant instrumentation and control equipment are set to four levels: CC1, CC2, NC, and RTM;
[0060] S3. Set operating conditions, fault simulation, characteristic parameter reading and matching classification rules through the DCS parallel system to achieve risk assessment and classification management of instrumentation and control equipment, and generate relevant reports;
[0061] S4. Build a fault library, formulate classification rules, simulate fault insertion, read characteristic parameters, determine criticality levels, store classification results, generate reports, and transmit data to evaluate the criticality levels of nuclear power plant instrumentation and control equipment and provide decision support for equipment maintenance and management.
[0062] In S2, critical sensitive equipment (CC1) plays a vital role in nuclear safety and unit power generation of nuclear power plants. The failure of a single device can lead to serious consequences such as shutdown, shutdown, power reduction or large power fluctuations of nuclear power plants. For nuclear power plant instrumentation and control equipment, CC1-level equipment usually includes instruments and control systems that are directly involved in key functions such as safe shutdown of nuclear power plants, core cooling, containment isolation, and residual heat removal.
[0063] Critical equipment (CC2) level equipment also plays a key role in nuclear safety and unit power generation of nuclear power plants, but its importance is slightly lower than CC1 level equipment. Although the failure of such equipment will not cause the nuclear power plant to shut down or shut down immediately, it may affect the safe operation or power generation efficiency of the nuclear power plant. For nuclear power plant instrumentation and control equipment, CC2 level equipment may include those used to monitor nuclear power plant operating parameters, provide alarm information or perform some auxiliary safety functions Instruments and control systems.
[0064] Non-nuclear safety equipment (NC) level equipment also plays an important role in nuclear power plants, but it is not directly related to nuclear safety functions. Failure of such equipment usually does not affect the nuclear safety of nuclear power plants, but may affect the power generation efficiency or operational stability of nuclear power plants. For nuclear power plant instrumentation and control equipment, NC-level equipment may include instruments and control systems used for conventional island systems, auxiliary systems or support systems. Although these devices are not directly involved in the safety functions of nuclear power plants, they are crucial to the normal operation and power generation process of nuclear power plants.
[0065] Equipment that is operated to the maintenance level (RTM) is usually those that have little impact on the operation of nuclear power plants. The failure of these equipment usually does not lead to serious consequences such as nuclear power plant shutdown, outage or power fluctuation, and the risk and consequences of their failure are acceptable. For this type of equipment, preventive maintenance is usually not required, but corrective maintenance is performed after the equipment fails. In the instrumentation and control equipment of nuclear power plants, RTM-level equipment may include some instruments and control systems used to monitor or control non-critical systems.
[0066] In S3, various operating conditions can be set in the DCS parallel system, such as full power, 75%, 50%, 15% power steps, grid connection with minimum load, before grid connection, etc.
[0067] It can simulate the failure of all equipment in the DCS cabinet, such as power supply, controller, board, communication module, backplane, terminal block, etc. The DCS parallel system can realize the simulated operation response of nuclear power units according to different failures of different equipment.
[0068] According to the classification rules, existing characteristic parameters can be read from the DCS parallel system, including key characteristic parameters such as shutdown signal, reactor shutdown signal, injection system startup, etc., as well as general characteristic parameters, including the opening and stopping of valves, pumps and other equipment.
[0069] The insertion of faults in S4, the reading of characteristic parameters, the judgment and storage of criticality levels, and the generation of reports are all automatically performed by software without manual execution. Characteristic parameters, classification rules, report formats, etc. can all be generated in advance according to the requirements of nuclear power units. There is no requirement for equipment classification experience and skills for users who perform instrumentation and control equipment classification.
[0070] In some embodiments, the specific steps of S3 are as follows:
[0071] S3.1. Set the DCS parallel system to restore to the specified operating condition, such as full power operation.
[0072] Setting up the DCS parallel system to simulate a specific operating condition, for example, restoring a unit to full load operation, usually involves parameters such as reactor power, primary circuit flow pressure, and secondary circuit steam flow, to ensure that the unit operates in a safe and efficient state.
[0073] S3.2. Instruct the DCS parallel system to insert the specified instrumentation and control equipment fault, which can be divided into single equipment fault insertion and multiple equipment fault batch insertion.
[0074] Regarding single-device fault insertion, in the DCS parallel system, a specific instrumentation and control equipment fault can be simulated. For example, the reading of a temperature sensor can be set to abnormally high or low to simulate a sensor failure.
[0075] Regarding batch insertion of multiple device faults, in a DCS parallel system, multiple device faults can be inserted in batches to simulate more complex situations, for example, simulating the faults of multiple temperature and pressure sensors at the same time, or simulating the faults of actuators (such as valves).
[0076] S3.3. Run and read the specified characteristic parameter values in the DCS parallel system, such as shutdown signal, stack shutdown signal, injection system startup, valve opening and closing, pump start and stop, etc.
[0077] In the DCS parallel system, you can run simulated operating conditions and read specific characteristic parameter values, such as the output power of the generator set, fuel consumption rate, etc. These characteristic parameter values are part of the DCS parallel system monitoring and control process.
[0078] These characteristic parameter values are collected and calculated in real time by sensors and actuators of the DCS parallel system. The sensors are responsible for collecting physical quantities (such as temperature, pressure, flow, etc.) at the scene and converting them into electrical signals and sending them to the DCS parallel system. The DCS parallel system processes and calculates these signals to obtain characteristic parameter values.
[0079] S3.4. Match the characteristic parameter values with the instrumentation and control equipment classification rules to determine the instrumentation and control equipment classification.
[0080] The classification rules for instrumentation and control equipment are formulated based on the specific application scenarios and performance requirements of the equipment.
[0081] For example, based on the risk assessment I&C equipment classification rules, the characteristic parameter values are matched with this rule to determine the risk level of the equipment. For example, if an I&C equipment failure causes shutdown or a power fluctuation of more than 10%, the criticality level of the I&C equipment is CC1; if an I&C equipment failure causes the safety system to start, the criticality level of the I&C equipment is CC2. The I&C operation and maintenance personnel of a nuclear power plant can arrange maintenance work for the equipment according to the criticality level of the I&C equipment.
[0082] S3.5. Store the instrumentation and control equipment classification results and generate an instrumentation and control equipment classification report.
[0083] After determining the classification results of the I&C equipment, these results need to be stored in the database for subsequent analysis and decision-making. At the same time, an I&C equipment classification report is generated to intuitively present the classification results in the form of charts, tables, etc., so that managers can better understand the operating status and risk status of the equipment.
[0084] This application can effectively evaluate and manage the operating status and risk situation of instrumentation and control equipment by designing step S3, namely, the setting of DCS parallel system, fault insertion, characteristic parameter reading, equipment classification, result storage and report generation, so as to provide strong support for safe production.
[0085] In some embodiments, the specific steps of S4 are as follows:
[0086] S4.1. Construct an I&C equipment fault database. According to the I&C equipment list and I&C equipment fault categories of the nuclear power plant, construct an I&C equipment fault database. The fault naming in the fault database should be consistent with that of the I&C equipment faults in the DCS parallel system.
[0087] The fault library is a database containing all possible faults and their classifications of nuclear power plant instrumentation and control equipment. Building a fault library can systematically manage and analyze these faults so that problems can be quickly located during equipment maintenance and troubleshooting. Each fault in the fault library will have a unique name, which needs to be consistent with the naming in the DCS parallel system so that it can be accurate during data exchange and integration.
[0088] In one embodiment, S4.1 includes:
[0089] Collect data: Obtain the latest list of I&C equipment from nuclear power plants, including equipment name, model, function, location, etc.
[0090] Fault classification: Based on historical data and expert experience, I&C equipment faults are classified into different categories, such as sensor faults, actuator faults, communication faults, etc.
[0091] Naming standard: ensure that the fault naming in the fault database is consistent with that in the DCS parallel system to facilitate data docking and identification;
[0092] Data entry: Enter fault classification and related information into the fault database to form a structured data table.
[0093] S4.2. Construct a rule base for criticality classification of I&C equipment. According to the guidelines for classification of nuclear power plant equipment and the impact of I&C equipment failure on the operation of nuclear power plant process equipment, form I&C equipment classification rules based on reverse inference of nuclear power plant process equipment.
[0094] The rule base is developed based on the nuclear power plant equipment classification guidelines and the analysis results of the impact of instrumentation and control equipment failures on process equipment operation, and contains a series of rules for determining the criticality level of instrumentation and control equipment. These rules may be based on factors such as failure frequency, severity of failure consequences, and the importance of the equipment in the nuclear power plant process. By building a rule base, a standardized method is provided to evaluate the criticality of instrumentation and control equipment, thereby guiding the maintenance and management strategy of the equipment.
[0095] In one embodiment, S4.2 includes:
[0096] Study Guidelines: Deepen your understanding of the requirements and standards of the nuclear power plant equipment classification guidelines;
[0097] Impact analysis: Analyze the impact of instrumentation and control equipment failure on the safety, reliability and economy of process equipment operation;
[0098] Rule formulation: Based on the above analysis, formulate the classification rules for instrumentation and control equipment, and clarify the classification standards and conditions for each level;
[0099] Rule verification: Verify the rationality and effectiveness of the rules through expert review and simulation testing.
[0100] S4.3. Design an automatic introduction module for instrumentation and control equipment faults. Send instructions for inserting specified instrumentation and control equipment faults to the DCS parallel system through the data interface with the DCS parallel system.
[0101] The function of the instrumentation and control equipment fault automatic introduction module is to automatically introduce the specified instrumentation and control equipment fault into the system through the data interface with the DCS parallel system. It is usually used in simulation testing or troubleshooting to test the system's response and fault handling mechanism without actually affecting the operation of the nuclear power plant. This application can greatly improve the test efficiency and accuracy by automatically introducing faults.
[0102] S4.4. Design a module for extracting the characteristics of instrumentation and control equipment failure consequences. Through the data interface with the DCS parallel system, read the characteristic parameter values after the instrumentation and control equipment failure is inserted.
[0103] The instrumentation and control equipment failure consequence feature extraction module is used to read and extract the characteristic parameter values of the instrumentation and control equipment after the failure from the DCS parallel system. These characteristic parameters include, for example, the working status of the equipment, the time when the failure occurred, the type of failure, the scope of the failure impact, etc. By extracting these characteristic parameters, data support is provided for the subsequent analysis of the failure consequences and the determination of the equipment criticality level.
[0104] In one embodiment, S4.4 includes:
[0105] Data reading: read the real-time data after the fault from the DCS parallel system through the data interface;
[0106] Feature extraction: extract relevant feature parameter values from the read data according to the preset feature parameter list;
[0107] Data storage: Store the extracted feature parameter values in a specified location for subsequent analysis.
[0108] S4.5. Design a fault consequence feature and rule base matching algorithm module. Match the extracted feature parameter values with the judgment conditions of the rule base to determine the criticality level of the instrumentation and control equipment.
[0109] The fault consequence feature and rule base matching algorithm module is used to match the extracted fault consequence features with the judgment conditions in the rule base to determine the criticality level of the instrumentation and control equipment. The matching algorithm makes judgments based on the weights, thresholds and other conditions of the feature parameters, and finally outputs one or more criticality levels as results, which are crucial for guiding the maintenance, replacement or upgrade strategy of the equipment.
[0110] In one embodiment, S4.5 includes:
[0111] Algorithm design: Design a matching algorithm to compare the feature parameter values with the judgment conditions in the rule base one by one;
[0112] Matching judgment: judge whether the characteristic parameter value meets the conditions of a certain criticality level according to the algorithm;
[0113] Result output: Output the matching result, i.e. the criticality level of the instrumentation and control equipment.
[0114] S4.6. Construct an instrumentation and control equipment criticality classification result database to store instrumentation and control equipment criticality classification results.
[0115] The I&C equipment criticality classification result library is used to store the results of I&C equipment criticality classification. Usually, each device has a corresponding criticality level, which reflects the importance of the device in the nuclear power plant process and the possible consequences of failure. The constructed I&C equipment criticality classification result library can be easily queried and used in the subsequent equipment management, risk assessment and troubleshooting process.
[0116] In one embodiment, S4.6 includes:
[0117] Database design: Design the database structure, including table structure, field type and index, etc.;
[0118] Data entry: Enter the grading results into the database to ensure the accuracy and completeness of the data;
[0119] Data query: Provides data query function to facilitate users to quickly obtain classification results.
[0120] S4.7. Design an automatic generation module for instrumentation and control equipment criticality classification report. Output the instrumentation and control equipment criticality classification results according to the specified format and generate an instrumentation and control equipment criticality classification report.
[0121] The instrumentation and control equipment criticality classification report automatic generation module is used to automatically generate instrumentation and control equipment criticality classification reports based on the data in the classification result library. The classification report includes, for example, the name, model, criticality level, classification basis, recommended maintenance measures and other information of the equipment. This application automatically generates reports through S4.7, which can greatly improve work efficiency and accuracy, and also facilitate the presentation of results to management or regulatory agencies.
[0122] In one embodiment, S4.7 includes:
[0123] Report template design: design report template, including report format, content structure and style;
[0124] Data filling: fill the classification results into the corresponding positions in the report template;
[0125] Report generation: Generate a complete criticality classification report for instrumentation and control equipment, and provide printing or export functions.
[0126] S4.8. Design the human-machine interface of the instrumentation and control equipment classification tool software to provide an interface for issuing commands and displaying data for instrumentation and control equipment classification.
[0127] The human-machine interface is the window through which the instrumentation and control equipment hierarchical tool software interacts with the user. The human-machine interface provides an operating interface for functions such as command issuance, data display, and report generation, so that users can quickly get started and complete their work tasks efficiently.
[0128] S4.9, data interface of DCS parallel system, used for data transmission between instrumentation and control equipment classification tool software and DCS parallel system.
[0129] The data interface enables the instrumentation and control equipment classification tool software to transmit data with the DCS parallel system, realizing functions such as real-time data transmission, synchronous update and format conversion. The stability and reliability of the data interface are crucial to ensure the normal operation of the classification tool software and the accuracy of the results.
[0130] In one embodiment, the data transmission between the instrumentation and control equipment hierarchical tool software and the DCS parallel system includes:
[0131] (1) Instructions to start the DCS parallel system.
[0132] At the beginning of the instrumentation and control equipment classification process, it is first necessary to send a startup command to the DCS parallel system through the instrumentation and control equipment classification tool software. The purpose of this step is to activate the DCS parallel system and put it into standby state, ready to receive subsequent control commands and simulated fault inputs. The startup command usually includes necessary steps such as system initialization, resource configuration, and status check to ensure that the DCS parallel system can operate normally and accurately reflect the actual operating conditions of the nuclear power plant.
[0133] (2) Set the DCS parallel system to the instructions for the initial operation scenario of the nuclear power plant, such as full power operation.
[0134] In order to simulate the actual operating status of the nuclear power plant, the instrumentation and control equipment classification tool software needs to send instructions to the DCS parallel system to set the initial operating scenario. These scenarios may include full power operation, low power operation, shutdown maintenance and other states. By setting the initial operating scenario, it can be ensured that when simulating a fault, the DCS parallel system can accurately reflect the impact of the fault on the operation of the nuclear power plant.
[0135] (3) Control instructions issued to the DCS parallel system, including suspending operation, inserting specified instrumentation and control faults, resuming operation, etc.
[0136] During the I&C equipment classification process, the I&C equipment classification tool software needs to issue multiple control instructions to the DCS parallel system to simulate faults and evaluate the response of the equipment. These control instructions may include suspend operation instructions, which are used to suspend the operation status of the nuclear power plant before simulating faults; insert specified I&C fault instructions, which are used to introduce specific fault conditions in the DCS parallel system; and resume operation instructions, which are used to restore the normal operation status of the nuclear power plant after simulating faults. Through these control instructions, the operation status of the nuclear power plant can be accurately controlled and simulated, thereby accurately evaluating the performance and criticality level of the I&C equipment.
[0137] (4) Read the operating characteristic parameter values of the DCS parallel system after the instrumentation and control fault is inserted.
[0138] After simulating the fault and evaluating the equipment response, the I&C equipment classification tool software needs to read the operating characteristic parameter values after the I&C fault is inserted in the DCS parallel system. These characteristic parameter values may include multiple key parameters such as reactor power, coolant temperature, steam flow, etc. By reading these parameter values, the specific impact of the fault on the operating status of the nuclear power plant can be understood, thereby further evaluating the performance and criticality level of the I&C equipment under fault conditions.
[0139] In addition, based on the above-mentioned instrumentation and control equipment classification method based on DCS parallel system, the present application also provides an instrumentation and control equipment classification system based on DCS parallel system, such as Figure 3 As shown, including:
[0140] The automatic introduction module of instrumentation and control equipment faults sends instructions for inserting specified instrumentation and control equipment faults to the DCS parallel system through the data interface of the DCS parallel system. The automatic introduction of instrumentation and control equipment faults is realized through the data interface between the automatic introduction module of instrumentation and control equipment faults and the DCS parallel system.
[0141] The instrumentation and control equipment failure consequence feature extraction module reads the characteristic parameter values after the instrumentation and control equipment failure is inserted through the data interface of the DCS parallel system;
[0142] The fault consequence feature and rule base matching algorithm module matches the extracted feature parameter values with the judgment conditions of the rule base to determine the criticality level of the instrumentation and control equipment;
[0143] The automatic generation module of the I&C equipment management and supervision classification report is used to output the I&C equipment criticality classification results according to the specified format and generate the I&C equipment criticality classification report;
[0144] The instrument and control equipment stewardship classification result database is used to store the instrument and control equipment criticality classification results;
[0145] Instrumentation and control equipment fault database, used to enter fault classification and related information;
[0146] The I&C equipment management and supervision classification rule base forms I&C equipment classification rules based on the reverse inference of nuclear power plant process equipment according to the nuclear power plant equipment classification guidelines and the impact of I&C equipment failures on the operation of nuclear power plant process equipment;
[0147] The human-computer interaction interface of the instrumentation and control equipment classification tool software provides an interface for issuing instructions and displaying data for instrumentation and control equipment classification;
[0148] The data interface of the DCS parallel system is used for data transmission between the instrumentation and control equipment classification tool software and the DCS parallel system.
[0149] In addition, the present application also provides an electronic device, including a memory and a processor, wherein the memory stores computer-readable instructions, and when the processor executes the computer-readable instructions, the above-mentioned instrumentation and control equipment classification method based on the DCS parallel system is implemented.
[0150] In addition, the present application also provides a computer-readable storage medium, on which computer-readable instructions are stored. When the computer-readable instructions are executed, the above-mentioned instrumentation and control equipment classification method based on the DCS parallel system is implemented.
[0151] Computer readable media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. Information can be computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device.
[0152] The above description is only a specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed in the present application should be covered within the protection scope of the present application.
Claims
1. A classification method for nuclear power plant instrumentation and control equipment based on a DCS parallel system, characterized in that: include: S1. By introducing an I&C equipment failure into the DCS parallel system, and based on the response of the DCS parallel system after the failure and the I&C equipment classification rules, determine the criticality level of the I&C equipment; S2. Set the criticality level of the nuclear power plant instrumentation and control equipment according to the grade identification of the nuclear power plant process equipment; S3. Through DCS parallel system settings, fault simulation, characteristic parameter reading and matching classification rules, risk assessment and classification management of instrumentation and control equipment are realized, and relevant reports are generated; S4. Build a fault library, formulate classification rules, simulate fault insertion, read characteristic parameters, determine criticality levels, store classification results, and generate reports.
2. The classification method of nuclear power plant instrumentation and control equipment based on DCS parallel system according to claim 1 is characterized in that: In S2, the criticality levels of the nuclear power plant instrumentation and control equipment are set to four levels: CC1, CC2, NC, and RTM.
3. The method for classifying nuclear power plant instrumentation and control equipment based on a DCS parallel system according to claim 1, characterized in that S3 include: S3.
1. Set the DCS parallel system to restore to the specified operating condition; S3.2, insert the specified instrumentation and control equipment fault into the DCS parallel system; S3.3, run and read the specified characteristic parameter values in the DCS parallel system; S3.
4. Match the characteristic parameter value with the instrumentation and control equipment classification rules to determine the instrumentation and control equipment classification; S3.
5. Store the instrumentation and control equipment classification results and generate an instrumentation and control equipment classification report.
4. The method for classifying nuclear power plant instrumentation and control equipment based on a DCS parallel system according to claim 1, characterized in that S4 include: S4.
1. Build an I&C equipment fault database based on the I&C equipment list and I&C equipment fault categories of nuclear power plants; S4.
2. According to the guidance for classification of nuclear power plant equipment and the impact of instrumentation and control equipment failure on the operation of nuclear power plant process equipment, the instrumentation and control equipment classification rules based on the reverse deduction of nuclear power plant process equipment are formed; S4.3, through the data interface with the DCS parallel system, send the command of inserting the specified instrumentation and control equipment fault to the DCS parallel system; S4.4, through the data interface with the DCS parallel system, read the characteristic parameter value after the instrumentation and control equipment fails; S4.
5. Match the extracted characteristic parameter value with the judgment condition of the rule base to determine the criticality level of the instrumentation and control equipment; S4.
6. Store the criticality classification results of instrumentation and control equipment; S4.
7. Output the criticality classification results of instrumentation and control equipment according to the specified format and generate an instrumentation and control equipment criticality classification report.
5. The classification method of nuclear power plant instrumentation and control equipment based on DCS parallel system according to claim 4 is characterized in that: S4.1 includes: Obtain the latest list of I&C equipment from nuclear power plants; According to historical data and expert experience, I&C equipment failures are classified into different categories; Ensure that the fault naming in the fault library is consistent with that in the DCS parallel system; Enter the fault classification and related information into the fault database to form a structured data table.
6. The classification method of nuclear power plant instrumentation and control equipment based on DCS parallel system according to claim 4 is characterized in that: S4.2 includes: Analyze the impact of instrumentation and control equipment failure on the safety, reliability and economy of process equipment operation; Formulate classification rules for instrumentation and control equipment and clarify the classification standards and conditions for each level; Verify the rationality and effectiveness of the rules.
7. The method for classifying instrumentation and control equipment of a nuclear power plant based on a DCS parallel system according to claim 4, characterized in that: Data transmission between the instrumentation and control equipment classification tool software and the DCS parallel system includes: Instructions to start the DCS parallel system; Instructions for setting the DCS parallel system to the initial operation scenario of the nuclear power plant; Control instructions issued to the DCS parallel system; Read the operating characteristic parameter values of the DCS parallel system after inserting the instrumentation and control fault.
8. A nuclear power plant instrumentation and control equipment classification system based on a DCS parallel system, characterized in that: include: The automatic introduction module of instrumentation and control equipment faults is used to send instructions to insert specified instrumentation and control equipment faults to the DCS parallel system; The instrumentation and control equipment failure consequence feature extraction module is used to read the characteristic parameter values after the instrumentation and control equipment failure is inserted; The fault consequence feature and rule base matching algorithm module is used to match the extracted feature parameter value with the judgment condition of the rule base to determine the criticality level of the instrumentation and control equipment; The I&C equipment criticality classification report automatic generation module is used to output the I&C equipment criticality classification results according to the specified format and generate the I&C equipment criticality classification report; The instrumentation and control equipment criticality classification result database is used to store the instrumentation and control equipment criticality classification results; Instrumentation and control equipment fault database, used to enter fault classification and related information; The I&C equipment criticality classification rule base forms I&C equipment classification rules based on reverse deduction of nuclear power plant process equipment according to the nuclear power plant equipment classification guidelines and the impact of I&C equipment failures on the operation of nuclear power plant process equipment.
9. An electronic device, characterized in that: The invention comprises a memory and a processor, wherein the memory stores computer-readable instructions, and when the processor executes the computer-readable instructions, the classification method of nuclear power plant instrumentation and control equipment based on a DCS parallel system as described in any one of claims 1 to 7 is implemented.
10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer-readable instructions, and when the computer-readable instructions are executed, the method for grading nuclear power plant instrumentation and control equipment based on a DCS parallel system as described in any one of claims 1 to 7 is implemented.