CN113806909B - Scene selection method and device for nuclear power comprehensive scene verification, and nuclear power comprehensive scene verification method and system - Google Patents
Scene selection method and device for nuclear power comprehensive scene verification, and nuclear power comprehensive scene verification method and system Download PDFInfo
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Abstract
The invention provides a scene selection method and device for nuclear power comprehensive scene verification and a nuclear power comprehensive scene verification method and system. The scene selection method comprises the steps of collecting characteristic elements and scene sets, selecting characteristic elements related to each scene from the characteristic element total sets to form characteristic element subsets corresponding to the characteristic elements, overlapping scenes with high characteristic element overlap ratio in the scene sets and applying different accident processing rules on the premise of ensuring that any characteristic element is contained in at least one characteristic element subset corresponding to at least one scene in the final scene set, overlapping scenes with low characteristic element overlap ratio in the scene sets, and deleting N-1 scenes with high characteristic element overlap ratio in the scene sets and applying the same accident processing rules. Therefore, the method not only meets the selection principle and covers the whole area, but also eliminates redundant scene sets, and greatly reduces the verification workload of the nuclear power comprehensive scene on the premise of ensuring the comprehensive, strict and accurate source data.
Description
Technical Field
The invention particularly relates to a scene selection method and device for nuclear power comprehensive scene verification, and a nuclear power comprehensive scene verification method and system.
Background
Fuqing nuclear power unit No. 5 and No. 6 (namely Hualong No. 1) are autonomous research and development third-generation nuclear power units in China, and the application of the symptom guide method accident handling Strategy (SEOP) regulation system widely accepted internationally at present is also one of important technical characteristics of advanced nuclear power units. For the development of the Hua-Lon accident handling procedure, the corresponding development flow should be followed, and corresponding verification and confirmation of the accuracy for determining the information and/or the indication are required at each stage of the development, so as to determine whether the accident handling procedure can be accurately and effectively executed, and prove that the accident handling procedure is sufficient to alleviate the transient and the accident consequence.
Comprehensive scene verification is one link of the verification and validation process. The comprehensive scene verification is based on operation experience feedback, a scene is set on a verification platform, related accidents are simulated, the accident processing effect is judged and key operation functions are simulated according to the operation strategy of the regulations, the actual corresponding accident curves and response actions of operators are recorded according to the determined evaluation criteria and verification programs, whether the whole accident regulation system is comprehensively evaluated, the matching between the operation and the design in the regulations is evaluated, the matching between the regulations is analyzed, the possible influence caused by the operation is evaluated, whether the operation experience feedback is met or not is evaluated, and a verification report is formed.
The traditional scene selection process only makes a selection principle, and does not give a detailed selection method and steps, which often results in insufficient comprehensiveness and insufficient rigorous verification of a generated scene list.
Disclosure of Invention
The invention aims to solve the technical problems in the prior art, and provides a scene selection method for nuclear power comprehensive scene verification, which provides comprehensive, precise and accurate source data for nuclear power comprehensive scene verification and greatly reduces the workload of the nuclear power comprehensive scene verification, and correspondingly provides a device corresponding to the scene selection method, a nuclear power comprehensive scene verification method comprising the scene selection method and a system corresponding to the comprehensive scene verification method.
The technical scheme adopted for solving the technical problems of the invention is as follows:
The invention provides a scene selection method for nuclear power comprehensive scene verification, which comprises the following steps:
characteristic elements related to operation conditions, personnel tasks and error-prone factors in the operation and accident processes of the nuclear power plant are collected to form a characteristic element total set,
Acquiring scenes related to normal operation, running events and accidents of the nuclear power plant to form a scene set,
For each scene in a scene set, selecting a characteristic element related to the scene from a characteristic element total set to form a characteristic element subset corresponding to the scene, wherein the scene set satisfies the following conditions: any characteristic element in the characteristic element total set is contained in a characteristic element subset corresponding to at least one scene;
Overlapping a plurality of scenes of which the feature element overlap ratio is higher than a first set value and different accident processing rules of a symptom guide method are applied to form a first overlapped scene, and combining a plurality of feature element subsets corresponding to the scenes forming the first overlapped scene respectively to form a feature element subset corresponding to the first overlapped scene;
Overlapping a plurality of scenes with the feature element overlapping ratio lower than a second set value in the scene set to form a second overlapped scene, and performing merging operation on a plurality of feature element subsets corresponding to the scenes forming the second overlapped scene respectively to form a feature element subset corresponding to the second overlapped scene;
Deleting N-1 scenes and corresponding feature element subsets in N scenes of which the feature element overlap ratio is higher than a third set value and the same accident handling rules of the symptom guide method are applied, wherein N is more than or equal to 2;
Thus, a target scene set and a feature element subset corresponding to each scene in the target scene set are obtained, wherein the target scene set meets the following conditions: any feature element in the feature element total set is contained in a feature element subset corresponding to at least one scene.
Optionally, the characteristic elements related to the operating conditions include the following two categories: normal running operation, and transients and accidents.
Optionally, the feature elements related to the personnel task include the following five categories: important personnel actions, system and accident sequences, manual initiation of protective actions or automatic system monitoring, tasks to run experience feedback to identify problems, well defined tasks by programs, and personnel interactions.
Optionally, the feature elements related to error prone factors include: high intensity workload conditions, changing workload conditions, fatigue conditions, and environmental factors.
Optionally, all incidents handled by all incident handling regulations of symptom oriented law are taken as incident related scenes in the scene set.
Optionally, the first set value is 85-95%, the second set value is 45-55%, and the third set value is 85-95%.
The invention also provides a scene selection device for nuclear power comprehensive scene verification, which comprises:
A first acquisition module for acquiring characteristic elements related to operation conditions, personnel tasks and error-prone factors in the operation and accident processes of the nuclear power plant to form a total set of characteristic elements,
A second acquisition module for acquiring scenes related to normal operation, operation events and accidents of the nuclear power plant to form a scene set,
The selection module is used for selecting the related characteristic elements from the characteristic element total sets aiming at each scene in the scene sets to form characteristic element subsets corresponding to the scenes, wherein the scene sets meet the condition that any characteristic element in the characteristic element total sets is contained in the characteristic element subsets corresponding to at least one scene;
The first superposition module is used for superposing a plurality of scenes of which the feature element superposition degree is higher than a first set value and different accident processing rules of a symptom guide method are applied to form a first superposition scene, and combining and calculating a plurality of feature element subsets corresponding to the scenes forming the first superposition scene respectively to form a feature element subset corresponding to the first superposition scene;
The second superposition module is used for superposing a plurality of scenes with the feature element superposition degree lower than a second set value in the scene set to form a second superposition scene, and carrying out merging operation on a plurality of feature element subsets corresponding to the scenes forming the second superposition scene respectively to form a feature element subset corresponding to the second superposition scene;
The deleting module is used for deleting N-1 scenes and corresponding characteristic element subsets in N scenes which have the characteristic element overlap ratio higher than a third set value and apply the same accident handling rules of the symptom guide method in the scene set, wherein N is more than or equal to 2;
And the target scene set satisfies that any characteristic element in the total characteristic element set is contained in the characteristic element sub-set corresponding to at least one scene.
The invention also provides a nuclear power comprehensive scene verification method, which comprises the following steps:
S1: the scene selection is carried out by adopting the scene selection method for nuclear power comprehensive scene verification,
S2: defining and describing each scene in the target scene set obtained in the step S1 to form scene description,
S3: inputting the scene description of one scene in the target scene set into a scene verification simulator, starting the scene verification simulator to perform comprehensive scene verification and outputting a verification report;
s4: and repeating the step S3 until all scenes in the target scene set are verified.
Optionally, the content defining and describing the scene includes:
describing specific initial conditions of the unit;
Event or accident descriptions;
a scene important time node description;
A feature element subset corresponding to the scene;
The staffing requirements required by the scene;
a personnel operation procedure covered by the scene;
important personnel actions;
Personnel response and process record files;
Specific conditions of the termination scenario.
The invention also provides a nuclear power comprehensive scene verification system, which comprises: a definition and description module, a scene verification simulator and a scene selection device for nuclear power comprehensive scene verification,
The scene selection device is electrically connected with the definition and description module and is used for transmitting the target scene set and the characteristic element subset corresponding to each scene in the target scene set to the definition and description module,
The definition and description module is electrically connected with the scene verification simulator and is used for defining and describing each scene in the target scene set to form scene descriptions, and sequentially transmitting the scene descriptions to the scene verification simulator,
The scene verification simulator is used for sequentially simulating and verifying the corresponding scene according to each scene description and outputting a verification report.
According to the invention, all characteristic elements related to the operation working condition, personnel task and error-prone factors in the operation and accident process of the nuclear power plant are collected, all scenes related to normal operation, operation event and accident of the nuclear power plant are collected, the characteristic elements related to the normal operation event and the accident are selected for each scene, on the premise that any characteristic element is contained in a characteristic element subset corresponding to at least one scene in a final scene set, the scene with high characteristic element overlapping ratio and different accident handling rules is adopted for overlapping, the scene with high characteristic element overlapping ratio and the same accident handling rules is omitted, and the scene with low characteristic element overlapping ratio is subjected to redundant deletion and merging processing, so that the scene set which meets the selection principle and fully covers and eliminates redundancy is provided, comprehensive, rigorous and accurate source data are provided for nuclear power comprehensive scene verification, and comprehensive scene verification workload is greatly reduced.
Drawings
Fig. 1 is a flowchart of a scenario selection method for nuclear power comprehensive scenario verification provided in embodiment 1 of the present invention;
Fig. 2 is a block diagram of a scenario selection device for nuclear power comprehensive scenario verification provided in embodiment 1 of the present invention;
Fig. 3 is a block diagram of a nuclear power comprehensive scene verification system provided in embodiment 1 of the present invention.
In the figure: 1. a scene selection device; 11. a first acquisition module; 12. a second acquisition module; 13. selecting a module; 14. a redundancy elimination module; 141. a first superposition module; 142. a second superposition module; 143. deleting the module; 2. a definition and description module; 3. and a scene verification simulator.
Detailed Description
The following description of the embodiments of the present invention will be made more apparent, and the embodiments described in detail, but not necessarily all, in connection with the accompanying drawings. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
In the description of the present invention, it should be noted that the orientation or positional relationship indicated by "upper" or the like is based on the orientation or positional relationship shown in the drawings, and is merely for convenience and simplicity of description, and is not meant to indicate or imply that the apparatus or element to be referred to must be provided with a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, the terms "first," "second," and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "configured," "mounted," "secured," and the like are to be construed broadly and may be either fixedly connected or detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood by those skilled in the art in specific cases.
The invention provides a scene selection method for nuclear power comprehensive scene verification, which comprises the following steps:
characteristic elements related to operation conditions, personnel tasks and error-prone factors in the operation and accident processes of the nuclear power plant are collected to form a characteristic element total set,
Acquiring scenes related to normal operation, running events and accidents of the nuclear power plant to form a scene set,
For each scene in a scene set, selecting a characteristic element related to the scene from a characteristic element total set to form a characteristic element subset corresponding to the scene, wherein the scene set satisfies the following conditions: any characteristic element in the characteristic element total set is contained in a characteristic element subset corresponding to at least one scene;
Overlapping a plurality of scenes of which the feature element overlap ratio is higher than a first set value and different accident processing rules of a symptom guide method are applied to form a first overlapped scene, and combining a plurality of feature element subsets corresponding to the scenes forming the first overlapped scene respectively to form a feature element subset corresponding to the first overlapped scene;
Overlapping a plurality of scenes with the feature element overlapping ratio lower than a second set value in the scene set to form a second overlapped scene, and performing merging operation on a plurality of feature element subsets corresponding to the scenes forming the second overlapped scene respectively to form a feature element subset corresponding to the second overlapped scene;
Deleting N-1 scenes and corresponding feature element subsets in N scenes of which the feature element overlap ratio is higher than a third set value and the same accident handling rules of the symptom guide method are applied, wherein N is more than or equal to 2;
Thus, a target scene set and a feature element subset corresponding to each scene in the target scene set are obtained, wherein the target scene set meets the following conditions: any feature element in the feature element total set is contained in a feature element subset corresponding to at least one scene.
The invention also provides a scene selection device for nuclear power comprehensive scene verification, which comprises:
A first acquisition module for acquiring characteristic elements related to operation conditions, personnel tasks and error-prone factors in the operation and accident processes of the nuclear power plant to form a total set of characteristic elements,
A second acquisition module for acquiring scenes related to normal operation, operation events and accidents of the nuclear power plant to form a scene set,
The selection module is used for selecting the related characteristic elements from the characteristic element total sets aiming at each scene in the scene sets to form characteristic element subsets corresponding to the scenes, wherein the scene sets meet the condition that any characteristic element in the characteristic element total sets is contained in the characteristic element subsets corresponding to at least one scene;
The first superposition module is used for superposing a plurality of scenes with the feature element superposition degree higher than a first set value and different accident processing rules by applying a symptom guide method to form a first superposition scene, and carrying out merging operation on a plurality of feature element subsets respectively corresponding to the plurality of scenes forming the first superposition scene to form a feature element subset corresponding to the first superposition scene;
The second superposition module is used for superposing a plurality of scenes with the feature element superposition degree lower than a second set value in the scene set to form a second superposition scene, and carrying out merging operation on a plurality of feature element subsets corresponding to the scenes forming the second superposition scene respectively to form a feature element subset corresponding to the second superposition scene;
The deleting module is used for deleting N-1 scenes and corresponding characteristic element subsets in N scenes which have the characteristic element overlap ratio higher than a third set value and apply the same accident handling rules of the symptom guide method in the scene set, wherein N is more than or equal to 2;
And the target scene set satisfies that any characteristic element in the total characteristic element set is contained in the characteristic element sub-set corresponding to at least one scene.
The invention also provides a nuclear power comprehensive scene verification method, which comprises the following steps:
S1: the scene selection is carried out by adopting the scene selection method for nuclear power comprehensive scene verification,
S2: defining and describing each scene in the target scene set obtained in the step S1 to form scene description,
S3: inputting the scene description of one scene in the target scene set into a scene verification simulator, starting the scene verification simulator to perform comprehensive scene verification and outputting a verification report;
s4: and repeating the step S3 until all scenes in the target scene set are verified.
The invention also provides a nuclear power comprehensive scene verification system, which comprises: a definition and description module, a scene verification simulator and a scene selection device for nuclear power comprehensive scene verification,
The scene selection device is electrically connected with the definition and description module and is used for transmitting the target scene set and the characteristic element subset corresponding to each scene in the target scene set to the definition and description module,
The definition and description module is electrically connected with the scene verification simulator and is used for defining and describing each scene in the target scene set to form scene descriptions, and sequentially transmitting the scene descriptions to the scene verification simulator,
The scene verification simulator is used for sequentially simulating and verifying the corresponding scene according to each scene description and outputting a verification report.
Example 1:
The embodiment provides a scene selection method for nuclear power comprehensive scene verification, which comprises the following steps:
characteristic elements related to operation conditions, personnel tasks and error-prone factors in the operation and accident processes of the nuclear power plant are collected to form a characteristic element total set,
Acquiring scenes related to normal operation, running events and accidents of the nuclear power plant to form a scene set,
For each scene in a scene set, selecting a characteristic element related to the scene from a characteristic element total set to form a characteristic element subset corresponding to the scene, wherein the scene set satisfies the following conditions: any characteristic element in the characteristic element total set is contained in a characteristic element subset corresponding to at least one scene;
Overlapping a plurality of scenes of which the feature element overlap ratio is higher than a first set value and different accident processing rules of a symptom guide method are applied to form a first overlapped scene, and combining a plurality of feature element subsets corresponding to the scenes forming the first overlapped scene to form a feature element subset corresponding to the first overlapped scene;
Overlapping a plurality of scenes with the feature element overlapping ratio lower than a second set value in the scene set to form a second overlapped scene, and performing merging operation on a plurality of feature element subsets corresponding to the scenes forming the second overlapped scene respectively to form a feature element subset corresponding to the second overlapped scene;
Deleting N-1 scenes and corresponding feature element subsets in N scenes of which the feature element overlap ratio is higher than a third set value and the same accident handling rules of the symptom guide method are applied, wherein N is more than or equal to 2;
Thus, a target scene set and a feature element subset corresponding to each scene in the target scene set are obtained, wherein the target scene set meets the following conditions: any feature element in the feature element total set is contained in a feature element subset corresponding to at least one scene.
By collecting all characteristic elements related to operation conditions, personnel tasks and error-prone factors in the operation and accident process of the nuclear power plant, collecting all scenes related to normal operation, operation events and accidents of the nuclear power plant, selecting the characteristic elements related to each scene, and on the premise of ensuring that any characteristic element is contained in a characteristic element subset corresponding to at least one scene in a final scene set, overlapping the scenes with high characteristic element overlapping degree and application of different accident handling rules, deleting the scenes with high characteristic element overlapping degree and application of the same accident handling rules, and overlapping the scenes with low characteristic element overlapping degree, deleting redundancy and merging the huge scene sets, so that the scene sets meeting the selection principle and full coverage and eliminating redundancy are obtained, comprehensive, strict and accurate source data are provided for nuclear power comprehensive scene verification, and the nuclear power comprehensive scene verification workload is greatly reduced.
Referring to fig. 1, the specific process of the above scene selection method is as follows:
1. feature element collection
The characteristic elements are collected by taking three dimensions of power plant operation conditions, personnel tasks and error-prone factors into consideration.
In this embodiment, the feature element collection related to the operation condition should be based on the experience feedback of the past nuclear power operation and the accident, so as to incorporate all the operation conditions of the nuclear power plant, so as to reflect the state of the unit and the characteristic of the system performance change, and consider the security importance of the man-machine interface.
Specifically, characteristic elements related to the operation conditions are classified into two main types, namely normal operation and transient accidents:
The normal operation includes: the power plant is started, the running power is obviously changed, and the like;
Transients and accidents include: transient, accident.
In this embodiment, the feature elements related to the personnel task should include personnel key actions, various programs for coping with different accidents, cognition, response and interaction of operators, and the like.
Specifically, the characteristic elements related to the personnel task include:
Important personnel actions, systems and accident sequences
Manually initiated protection action or automatic system monitoring
Task for identifying problems through operation experience feedback
Well defined tasks by the program, i.e. personnel can understand and perform specified steps based on rules;
Personnel interaction.
In this embodiment, the feature elements associated with error-prone factors should include factors that pose challenges to personnel performance or force errors to occur, for checking the ability of personnel to recover from the errors.
Specifically, the characteristic elements related to error prone factors include: high intensity workload conditions, changing workload conditions, fatigue conditions, and environmental factors.
The detailed characteristic elements are shown in table 1, for example.
TABLE 1 feature element set (enumeration)
2. Scene acquisition
One) scene range determination. In view of the aforementioned operating condition feature elements in the feature element collection, each scene in the scene set should take into account normal operation, operating events and incidents. For the collection of normal operation and operation events, in order to increase the selection speed, the specific selection of partial characteristic elements is required (see step five); for the selection of accidents, accidents handled by the symptom oriented accident handling protocol (SEOP) should be considered.
Two) accident scene sources in the scene set. The accident scene collection should ensure that all accident handling procedures are covered in the final scene verification. The symptom-oriented accident handling protocol (SEOP) of Fuqing nuclear power unit No. 5 and No. 6 (namely Hualong No. 1) comprises a class E protocol and a class F protocol, and the list of the protocols is as follows:
Table 2 symptom oriented method Accident handling protocol
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All incidents mentioned in the symptom oriented incident handling protocol (SEOP) are consolidated to form an incident scene set as part of the incident scene of the scene set.
Third) form a table.
The feature elements are placed in each column of the table, and the scenes (events or incidents) are placed in each row of the table, as shown in table 3.
TABLE 3 characterization element-scene summary table
For all accident scenes in the scene set, the feature elements related to the accident scenes are selected from the feature element-scene summary table, wherein the feature elements are related, and the record 1 is not related, and the record 0 is recorded. For example, see the accident "small break in one circuit" in Table 4.
TABLE 4 characterization elements-Accident scene correspondence table (listing)
And setting events or running operations in a targeted manner for feature elements which are irrelevant to the accident in the feature element total set.
Such as: for the feature element of "power plant start", the operation "flush-to-grid" is set, and for the feature element of "instrument control system and man-machine interface failure or degradation", the event "KIC system is lost" is set, see table 5.
TABLE 5 characterization element-event or run operation scene correspondence table (enumeration)
Fourth), the scene eliminates redundancy.
And overlapping accident scenes with high feature element overlapping degree (more than 90 percent) or completely overlapping but applying different regulations to form a first overlapped scene, and combining feature element subsets corresponding to a plurality of scenes forming the first overlapped scene to form a feature element subset corresponding to the first overlapped scene.
For accident scenes with higher feature element overlapping degree (more than 90%) or completely overlapping and using the same rules, one accident scene and a corresponding feature element subset thereof are reserved, and other accident scenes and corresponding feature element subsets thereof are deleted.
And for accidents or events with larger feature element differences, forming a second superposition scene in a superposition mode, and combining feature element subsets corresponding to a plurality of scenes forming the second superposition scene to form feature element subsets corresponding to the second superposition scene.
Examples are as follows: the "unit power reduction" is to satisfy the characteristic element of "operation power significant change (normal operation condition)", and the "pump trip" is to satisfy the characteristic element of "power plant shutdown (normal operation condition)", and the "transient state". The major break of a loop is a design basis accident, and the characteristic elements cannot be verified, so that three events or accidents are overlapped according to the method, and the details are shown in table 6.
TABLE 6 event or Accident overlay schematic form
In the above-mentioned superposition and deletion process, it should be ensured that the finally obtained target scene set satisfies: any feature element in the feature element total set is contained in a feature element subset corresponding to at least one scene.
Fifth) forming a target scene set
Through the steps, the scene set which meets the selection principle and is covered comprehensively and eliminates redundancy can be formed, the scenes in the set completely cover all accident regulations and all characteristic elements, so that comprehensive, strict and accurate source data are provided for nuclear power comprehensive scene verification, and the nuclear power comprehensive scene verification workload is greatly reduced.
Example 2:
the embodiment provides a nuclear power comprehensive scene verification method, which is continued to refer to fig. 1, and includes the following steps:
S1: performing scene selection by adopting the scene selection method for nuclear power comprehensive scene verification in embodiment 1;
s2: defining and describing each scene in the target scene set obtained in the step S1 to form scene description;
after determining the scene set according to the method of embodiment 1, each scene needs to be defined and described. The operation working condition and the scene suitable for comprehensive scene verification are definitely defined, and scene details suitable for simulation machine application are formulated. For each scene, the following information should be defined:
describing specific initial conditions of the unit;
event or accident descriptions (accident stack);
a scene important time node description;
characteristic elements covered by the scene;
The staffing requirements required by the scene;
a personnel operation procedure covered by the scene;
important personnel actions;
Personnel response and process record files;
Specific conditions of the termination scenario.
S3: inputting the scene description of one scene in the target scene set into a scene verification simulator, starting the scene verification simulator to perform comprehensive scene verification and outputting a verification report;
the scene description is a bedding work before the scene is verified, the initial condition description of the scene is clear and is input into a simulator of the power plant, the scene can be verified, and the scene verification simulator and the built-in comprehensive scene simulation software are mature products and can be obtained in a market.
S4: and repeating the step S3 until all scenes in the target scene set are verified.
In scene verification, a team of observers is required to be composed, and the team screens scenes, prepares programs and process record files required by the scenes, supervises verification processes of the whole scenes, and records environmental factors and personnel states related to scene verification. On the premise of unknown scene setting information, a scene verification operator executes a scene related program, stabilizes the unit state of the verification platform, and completes scene related evaluation activities in cooperation with an observer.
Examples: the steam line rupture accident scenario in the containment is described as follows:
The initial working condition is that the reactor runs at full power, the charging pump is switched periodically, a large break accident of a steam pipeline in the containment occurs, safety injection is triggered, an operator enters an E20 rule from E00 after confirming an alarm, after stopping all main pumps, the unit isolates a fault evaporator according to E20, enters an E10 rule to stabilize a nuclear steam supply system, and waits for back-off to finish.
The scene importance time nodes are as follows:
-T0- -full power, periodic switching test of up-pump
-T1- -steam line break in SG1 shell, T0+10min
-T2- -scene end
The feature elements of the scene coverage are as follows:
Accident (Accident)
Important personnel actions, systems and accident sequences
Automated system for personnel monitoring risk importance
Management program
General operation program for power plant
Program for starting, running and stopping safety related system
Procedure for abnormality, dislocation, alarm
Program for handling emergency events and other significant events
Program for controlling measuring and testing equipment
Program for periodic monitoring and calibration
Operation and maintenance program
Master room operators and auxiliary operators, along with other plant personnel, perform tasks locally
Important personnel actions of the scene include:
Confirm to stop the pile, shut down
Control of loop temperature and SG water level
Controlling water level and pressure of pressure stabilizer
Overlay procedure
FQ5-E00-TPOPAC-0000 off-stack or Anzhi K ]
FQ5-E20-TPOPAC-0000 break steam generator isolation E
FQ5-E10-TPOPAC-0000 loss of Primary or Secondary Cooling agent E
FQ5-E11-TPOPAC-0000 Annu end of injection K
Staffing requirements
The observer needs to have scene verification experience or training, select the scene and familiarize with the scene, and fully prepare relevant programs and various record files of the scene.
The operator is born by an operator and a high-level operator, and cooperates with the operator to perform scene simulation.
Example 3:
the present embodiment provides a scenario selection apparatus corresponding to the selection method of the nuclear power comprehensive scenario verification of embodiment 1, referring to fig. 2, which includes:
A first collection module 11, configured to collect characteristic elements related to operation conditions, personnel tasks and error-prone factors during operation and accident processes of the nuclear power plant, form a total collection of characteristic elements,
A second acquisition module 12 for acquiring scenes of the nuclear power plant related to normal operation, operation events and accidents, forming a scene set,
A selection module 13, configured to select, for each scene in a scene set, a feature element related to the scene from a feature element total set, to form a feature element subset corresponding to the scene, where the scene set satisfies that any feature element in the feature element total set is included in a feature element subset corresponding to at least one scene of the scene set;
A redundancy elimination module 14, comprising:
The first superposition module 141 is configured to superimpose a plurality of scenes with feature element overlap ratios higher than 90% and applying different incident processing procedures by using a symptom guide method, form a first superimposed scene, and perform a merging operation on a plurality of feature element subsets corresponding to the plurality of scenes forming the first superimposed scene, so as to form a feature element subset corresponding to the first superimposed scene;
the second superposition module 142 is configured to superimpose a plurality of scenes with feature element overlap ratios lower than 50% in the scene set to form a second superimposed scene, and perform a merging operation on a plurality of feature element subsets corresponding to the plurality of scenes forming the second superimposed scene, so as to form a feature element subset corresponding to the second superimposed scene;
The deleting module 143 is used for deleting N-1 scenes and corresponding feature element subsets in N scenes which have the feature element overlap ratio higher than 90% and apply the same accident handling rules of the symptom guide method in the scene set, wherein N is more than or equal to 2;
And the target scene set satisfies that any characteristic element in the total characteristic element set is contained in the characteristic element sub-set corresponding to at least one scene.
Example 4:
The embodiment provides a nuclear power comprehensive scene verification system, referring to fig. 3, which includes: definition and description module 2, scene verification simulator 3, and scene selection device 1 for nuclear power comprehensive scene verification of embodiment 3.
The scene selection device 1 is electrically connected with the definition and description module 2 and is used for transmitting the target scene set and the feature element subset corresponding to each scene in the target scene set to the definition and description module 2;
The defining and describing module 2 is electrically connected with the scene verification simulator 3, and is used for defining and describing each scene in the target scene set (the definition and description of the scene are detailed in embodiment 2), forming a scene description, and sequentially transmitting each scene description to the scene verification simulator 3;
The scene verification simulator 3 is used for sequentially performing simulation verification on the corresponding scene according to each scene description and outputting a verification report.
The scene verification simulator and the built-in comprehensive scene simulation software thereof are mature products and can be purchased in the market.
It is to be understood that the above embodiments are merely illustrative of the application of the principles of the present invention, but not in limitation thereof. Various modifications and improvements may be made by those skilled in the art without departing from the spirit and substance of the invention, and are also considered to be within the scope of the invention.
Claims (4)
1. The scene selection method for nuclear power comprehensive scene verification is characterized by comprising the following steps of:
characteristic elements related to operation conditions, personnel tasks and error-prone factors in the operation and accident processes of the nuclear power plant are collected to form a characteristic element total set,
Acquiring scenes related to normal operation, running events and accidents of the nuclear power plant to form a scene set,
For each scene in a scene set, selecting a characteristic element related to the scene from a characteristic element total set to form a characteristic element subset corresponding to the scene, wherein the scene set satisfies the following conditions: any characteristic element in the characteristic element total set is contained in a characteristic element subset corresponding to at least one scene;
Overlapping a plurality of scenes of which the feature element overlap ratio is higher than a first set value and different accident processing rules of a symptom guide method are applied to form a first overlapped scene, and combining a plurality of feature element subsets corresponding to the scenes forming the first overlapped scene respectively to form a feature element subset corresponding to the first overlapped scene;
Overlapping a plurality of scenes with the feature element overlapping ratio lower than a second set value in the scene set to form a second overlapped scene, and performing merging operation on a plurality of feature element subsets corresponding to the scenes forming the second overlapped scene respectively to form a feature element subset corresponding to the second overlapped scene;
Deleting N-1 scenes and corresponding feature element subsets in N scenes of which the feature element overlap ratio is higher than a third set value and the same accident handling rules of the symptom guide method are applied, wherein N is more than or equal to 2;
Thus, a target scene set and a feature element subset corresponding to each scene in the target scene set are obtained, wherein the target scene set meets the following conditions: any characteristic element in the characteristic element total set is contained in a characteristic element subset corresponding to at least one scene;
characteristic elements related to operating conditions include the following two categories: normal operation, and transients and accidents;
The feature elements related to the personnel task include the following five categories: important personnel actions, system and accident sequences, manual start of protection actions or automatic system monitoring, task of running experience feedback to identify problems, well defined task by program, and personnel interaction activities;
characteristic elements related to error prone factors include: high intensity workload conditions, changing workload conditions, fatigue conditions, and environmental factors;
All accidents processed by all accident handling rules of the symptom guide method are used as scenes related to the accidents in the scene set;
the first set value is 85-95%, the second set value is 45-55%, and the third set value is 85-95%.
2. The utility model provides a scene selection device of nuclear power comprehensive scene verification which characterized in that includes:
A first acquisition module for acquiring characteristic elements related to operation conditions, personnel tasks and error-prone factors in the operation and accident processes of the nuclear power plant to form a total set of characteristic elements,
A second acquisition module for acquiring scenes related to normal operation, operation events and accidents of the nuclear power plant to form a scene set,
The selection module is used for selecting the related characteristic elements from the characteristic element total sets aiming at each scene in the scene sets to form characteristic element subsets corresponding to the scenes, wherein the scene sets meet the condition that any characteristic element in the characteristic element total sets is contained in the characteristic element subsets corresponding to at least one scene;
The first superposition module is used for superposing a plurality of scenes of which the feature element superposition degree is higher than a first set value and different accident processing rules of a symptom guide method are applied to form a first superposition scene, and combining and calculating a plurality of feature element subsets corresponding to the scenes forming the first superposition scene respectively to form a feature element subset corresponding to the first superposition scene;
The second superposition module is used for superposing a plurality of scenes with the feature element superposition degree lower than a second set value in the scene set to form a second superposition scene, and carrying out merging operation on a plurality of feature element subsets corresponding to the scenes forming the second superposition scene respectively to form a feature element subset corresponding to the second superposition scene;
The deleting module is used for deleting N-1 scenes and corresponding feature element subsets in N scenes which have the feature element overlap ratio higher than a third set value and apply the same accident handling rules of the symptom guide method in the scene set;
obtaining a target scene set and a feature element subset corresponding to each scene in the target scene set, wherein the target scene set satisfies that any feature element in the feature element total set is contained in the feature element subset corresponding to at least one scene;
wherein, the characteristic elements related to the operation condition comprise the following two categories: normal operation, and transients and accidents;
The feature elements related to the personnel task include the following five categories: important personnel actions, system and accident sequences, manual start of protection actions or automatic system monitoring, task of running experience feedback to identify problems, well defined task by program, and personnel interaction activities;
characteristic elements related to error prone factors include: high intensity workload conditions, changing workload conditions, fatigue conditions, and environmental factors;
All accidents processed by all accident handling rules of the symptom guide method are used as scenes related to the accidents in the scene set;
the first set value is 85-95%, the second set value is 45-55%, and the third set value is 85-95%.
3. A nuclear power comprehensive scene verification method comprises the following steps:
S1: the scene selection is carried out by adopting the scene selection method for nuclear power comprehensive scene verification as claimed in claim 1,
S2: defining and describing each scene in the target scene set obtained in the step S1 to form scene description,
S3: inputting the scene description of one scene in the target scene set into a scene verification simulator, starting the scene verification simulator to perform comprehensive scene verification and outputting a verification report;
s4: repeating the step S3 until all scenes in the target scene set are verified;
Wherein, the content for defining and describing the scene comprises:
describing specific initial conditions of the unit;
Event or accident descriptions;
a scene important time node description;
A feature element subset corresponding to the scene;
The staffing requirements required by the scene;
a personnel operation procedure covered by the scene;
important personnel actions;
Personnel response and process record files;
Specific conditions of the termination scenario.
4. A nuclear power integrated scene verification system, comprising: a definition and description module, a scene verification simulator and a scene selection device for nuclear power comprehensive scene verification as claimed in claim 2,
The scene selection device is electrically connected with the definition and description module and is used for transmitting the target scene set and the characteristic element subset corresponding to each scene in the target scene set to the definition and description module,
The definition and description module is electrically connected with the scene verification simulator and is used for defining and describing each scene in the target scene set to form scene descriptions, and sequentially transmitting the scene descriptions to the scene verification simulator,
The scene verification simulator is used for sequentially simulating and verifying the corresponding scene according to each scene description and outputting a verification report;
Wherein, the content for defining and describing the scene comprises:
describing specific initial conditions of the unit;
Event or accident descriptions;
a scene important time node description;
A feature element subset corresponding to the scene;
The staffing requirements required by the scene;
a personnel operation procedure covered by the scene;
important personnel actions;
Personnel response and process record files;
Specific conditions of the termination scenario.
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