CN113806909A - 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 a scene set, selecting the characteristic elements related to each scene from the characteristic element total set to form a characteristic element subset corresponding to the characteristic elements, overlapping scenes which are high in coincidence degree of the characteristic elements and apply different accident handling procedures in the scene set on the premise that any characteristic element is contained in the characteristic element subset corresponding to at least one scene in the final scene set, overlapping scenes which are low in coincidence degree of the characteristic elements in the scene set, and deleting N-1 scenes which are high in coincidence degree of the characteristic elements in the scene set and apply the same accident handling procedures. Therefore, a scene set which meets the selection principle, covers the selection principle comprehensively and eliminates redundancy is obtained, and the workload of nuclear power comprehensive scene verification is greatly reduced on the premise of ensuring comprehensive, rigorous 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 6 (Hualong I) is a nuclear power unit of the third generation which is independently developed in China, adopts a symptom oriented method accident handling Strategy (SEOP) regulation system which is widely recognized internationally at present, and is also one of important technical characteristics of advanced nuclear power units. For the accident handling procedure development of hualong number one, a corresponding development process should be followed, corresponding verification and confirmation are needed at each stage of the development to determine the accuracy of information and/or instructions, determine whether the accident handling procedure can be accurately and effectively executed, and prove that the accident handling procedure is enough to alleviate the consequences of transients and accidents.
The comprehensive scene verification is a link of the verification and confirmation process. The comprehensive scene verification is based on operation experience feedback, scenes are set on a verification platform, related accidents are simulated, the accident treatment effect is judged and the key operation function is simulated according to the operation strategy of the rules, the corresponding curve of the actual accident and the response action of an operator are recorded according to the determined evaluation criterion and the verification program, whether the whole accident rule system is comprehensively evaluated, the matching of the operation and the design in the rules is evaluated, the matching among the rules is analyzed, the possible influence caused by the operation is evaluated, whether the operation is in accordance with the operation experience feedback is evaluated, and the like, so that a verification report is formed.
The traditional scene selection process only makes a selection principle, and does not provide a detailed selection method and steps, so that a generated scene list is not comprehensive enough, and verification is not strict enough.
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, rigorous and accurate source data for nuclear power comprehensive scene verification and greatly reduces workload of nuclear power comprehensive scene verification, 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 problem of the invention is as follows:
the invention provides a scene selection method for nuclear power comprehensive scene verification, which comprises the following steps:
collecting 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 characteristic element total set,
collecting scenes of the nuclear power plant related to normal operation, operation events and accidents to form a scene set,
for each scene in a scene set, selecting feature elements related to the scene from a feature element total set to form a feature element subset corresponding to the scene, wherein the scene set satisfies 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;
superposing a plurality of scenes which have feature element superposition degrees higher than a first set value and apply different accident handling procedures of a symptom guide method in a scene set to form a first superposed scene, and performing parallel operation on a plurality of feature element subsets respectively corresponding to the plurality of scenes forming the first superposed scene to form a feature element subset corresponding to the first superposed scene;
superposing a plurality of scenes with the feature element superposition degree lower than a second set value in a scene set to form a second superposed scene, and performing parallel operation on a plurality of feature element subsets respectively corresponding to the plurality of scenes forming the second superposed scene to form a feature element subset corresponding to the second superposed scene;
deleting N-1 scenes and corresponding feature element subsets in the N scenes, wherein the coincidence degree of the feature elements in the scene set is higher than a third set value and the same accident handling procedure is applied by a symptom guide method, wherein N is more than or equal to 2;
thereby 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: any feature element in the total set of feature elements is included in a subset of feature elements 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 human task include the following five categories: important personnel actions, system and accident sequences, manually initiated protective actions or automated system monitoring, tasks where empirical feedback is run to identify problems, tasks well defined by programs, and personnel interactions.
Optionally, the characteristic elements related to error-prone factors include: high intensity workload conditions, varying workload conditions, fatigue conditions, and environmental factors.
Optionally, all accidents processed by all accident handling procedures are treated as the accident 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 the following components:
the first acquisition module is used 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 characteristic element total set,
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 feature elements related to each scene in the scene set from the feature element total set to form a feature element subset corresponding to the scene, wherein the scene set meets the condition that any feature element in the feature element total set is contained in at least one feature element subset corresponding to the scene;
the first superposition module is used for superposing a plurality of scenes which have the feature element superposition degree higher than a first set value and apply different accident handling procedures of a symptom guide method in a scene set to form a first superposition scene, and performing parallel 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 a scene set to form a second superposed scene, and performing parallel operation on a plurality of feature element subsets respectively corresponding to the plurality of scenes forming the second superposed scene to form a feature element subset corresponding to the second superposed scene;
the deleting module is used for deleting N-1 scenes and the corresponding characteristic element subset in the N scenes which have the characteristic element contact ratio higher than a third set value and apply the same accident handling procedure by using a symptom guide method, wherein N is more than or equal to 2;
and 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.
The invention also provides a nuclear power comprehensive scene verification method, which comprises the following steps:
s1: the scene selection method of the nuclear power comprehensive scene verification is adopted for scene selection,
s2: defining and describing each scene in the target scene set obtained in step S1, forming a 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: step S3 is repeated 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;
an event or incident description;
describing important time nodes of a scene;
a subset of feature elements corresponding to the scene;
personnel allocation requirements required by the scene;
personnel operating procedures covered by the scene;
important personnel actions;
personnel response and process record files;
the specific condition of the scene is terminated.
The invention also provides a nuclear power comprehensive scene verification system, which comprises: a definition and description module, a scene verification simulator, and the 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 feature 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, forming scene descriptions and transmitting the scene descriptions to the scene verification simulator in sequence,
the scene verification simulator is used for simulating and verifying corresponding scenes according to the scene description in sequence and outputting a verification report.
In the invention, by collecting all characteristic elements related to operation conditions, personnel tasks and error-prone factors in the operation and accident processes 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, deleting and combining huge scene sets in a mode of overlapping scenes with high coincidence of the characteristic elements and applying different accident handling procedures, deleting scenes with high coincidence of the characteristic elements and applying the same accident handling procedure, and overlapping scenes with low coincidence of the characteristic elements, the scene sets meeting the selection principle and covering comprehensively and eliminating redundancy are obtained, not only provides comprehensive, rigorous and accurate source data for nuclear power comprehensive scene verification, but also greatly reduces workload of nuclear power comprehensive scene verification.
Drawings
Fig. 1 is a flowchart of a scene selection method for nuclear power integrated scene verification provided in embodiment 1 of the present invention;
fig. 2 is a block diagram of a scene selection device for nuclear power integrated scene verification according to embodiment 1 of the present invention;
fig. 3 is a block diagram of a nuclear power integrated scenario 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 superimposing module; 142. a second superimposing module; 143. a deletion module; 2. a definition and description module; 3. and (4) a scene verification simulator.
Detailed Description
The technical solutions in the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the scope of the present invention.
In the description of the present invention, it should be noted that the indication of orientation or positional relationship, such as "on" or the like, is based on the orientation or positional relationship shown in the drawings, and is only for convenience and simplicity of description, and does not indicate or imply that the device or element referred to must be provided with a specific orientation, constructed 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" 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 is to be noted that, unless otherwise explicitly specified or limited, the terms "connected," "disposed," "mounted," "fixed," and the like are to be construed broadly, e.g., as being fixedly or removably connected, or integrally connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases for those skilled in the art.
The invention provides a scene selection method for nuclear power comprehensive scene verification, which comprises the following steps:
collecting 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 characteristic element total set,
collecting scenes of the nuclear power plant related to normal operation, operation events and accidents to form a scene set,
for each scene in a scene set, selecting feature elements related to the scene from a feature element total set to form a feature element subset corresponding to the scene, wherein the scene set satisfies 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;
superposing a plurality of scenes which have feature element superposition degrees higher than a first set value and apply different accident handling procedures of a symptom guide method in a scene set to form a first superposed scene, and performing parallel operation on a plurality of feature element subsets respectively corresponding to the plurality of scenes forming the first superposed scene to form a feature element subset corresponding to the first superposed scene;
superposing a plurality of scenes with the feature element superposition degree lower than a second set value in a scene set to form a second superposed scene, and performing parallel operation on a plurality of feature element subsets respectively corresponding to the plurality of scenes forming the second superposed scene to form a feature element subset corresponding to the second superposed scene;
deleting N-1 scenes and corresponding feature element subsets in the N scenes, wherein the coincidence degree of the feature elements in the scene set is higher than a third set value and the same accident handling procedure is applied by a symptom guide method, wherein N is more than or equal to 2;
thereby 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: any feature element in the total set of feature elements is included in a subset of feature elements corresponding to at least one scene.
The invention also provides a scene selection device for nuclear power comprehensive scene verification, which comprises the following components:
the first acquisition module is used 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 characteristic element total set,
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 feature elements related to each scene in the scene set from the feature element total set to form a feature element subset corresponding to the scene, wherein the scene set meets the condition that any feature element in the feature element total set is contained in at least one feature element subset corresponding to the scene;
the first superposition module is used for superposing a plurality of scenes which have the feature element superposition degree higher than a first set value and apply different accident handling procedures of a symptom guide method in a scene set to form a first superposition scene, and performing parallel 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 a scene set to form a second superposed scene, and performing parallel operation on a plurality of feature element subsets respectively corresponding to the plurality of scenes forming the second superposed scene to form a feature element subset corresponding to the second superposed scene;
the deleting module is used for deleting N-1 scenes and the corresponding characteristic element subset in the N scenes which have the characteristic element contact ratio higher than a third set value and apply the same accident handling procedure by using a symptom guide method, wherein N is more than or equal to 2;
and 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.
The invention also provides a nuclear power comprehensive scene verification method, which comprises the following steps:
s1: the scene selection method of the nuclear power comprehensive scene verification is adopted for scene selection,
s2: defining and describing each scene in the target scene set obtained in step S1, forming a 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: step S3 is repeated 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 the 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 feature 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, forming scene descriptions and transmitting the scene descriptions to the scene verification simulator in sequence,
the scene verification simulator is used for simulating and verifying corresponding scenes according to the scene description in sequence 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:
collecting 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 characteristic element total set,
collecting scenes of the nuclear power plant related to normal operation, operation events and accidents to form a scene set,
for each scene in a scene set, selecting feature elements related to the scene from a feature element total set to form a feature element subset corresponding to the scene, wherein the scene set satisfies 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;
superposing a plurality of scenes which have feature element superposition degrees higher than a first set value and apply different accident handling procedures by a symptom guide method in a scene set to form a first superposed scene, and performing parallel operation on a plurality of feature element subsets respectively corresponding to the plurality of scenes forming the first superposed scene to form a feature element subset corresponding to the first superposed scene;
superposing a plurality of scenes with the feature element superposition degree lower than a second set value in a scene set to form a second superposed scene, and performing parallel operation on a plurality of feature element subsets respectively corresponding to the plurality of scenes forming the second superposed scene to form a feature element subset corresponding to the second superposed scene;
deleting N-1 scenes and corresponding feature element subsets in the N scenes, wherein the coincidence degree of the feature elements in the scene set is higher than a third set value and the same accident handling procedure is applied by a symptom guide method, wherein N is more than or equal to 2;
thereby 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: any feature element in the total set of feature elements is included in a subset of feature elements corresponding to at least one scene.
Therefore, by acquiring all characteristic elements related to operation conditions, personnel tasks and error-prone factors in the operation and accident processes of the nuclear power plant, acquiring all scenes related to normal operation, operation events and accidents of the nuclear power plant, selecting the characteristic elements related to each scene, and under 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, deleting redundancy and combining a huge scene set in a mode of overlapping scenes with high coincidence of the characteristic elements and applying different accident handling procedures, deleting scenes with high coincidence of the characteristic elements and applying the same accident handling procedure, and overlapping scenes with low coincidence of the characteristic elements, the scene set which meets the selection principle and is fully covered and eliminates redundancy is obtained, not only provides comprehensive, rigorous and accurate source data for nuclear power comprehensive scene verification, but also greatly reduces workload of nuclear power comprehensive scene verification.
Referring to fig. 1, the specific process of the scene selection method is as follows:
firstly, collecting characteristic elements
When the characteristic elements are collected, the three dimensions of the operation condition of the power plant, the personnel task and the error-prone factor are considered to be adopted.
In the embodiment, the characteristic elements related to the operation conditions are collected based on experience feedback of past nuclear power operation and accidents, and are included in the operation conditions of all nuclear power plants, so that the characteristics of unit states and system performance changes are reflected, and the safety importance of a human-computer interface is considered.
Specifically, the characteristic elements related to the operation conditions are classified into two main categories, normal operation and transient accident:
the normal operation includes: starting a power plant, obviously changing the running power and the like;
transients and accidents include: transient state and accident.
In this embodiment, the feature elements related to the task of the person should include key actions of the person, various programs for dealing with different accidents, cognition, response, interaction, and the like of the operator.
Specifically, the characteristic elements related to the human task include:
vital person actions, systems and accident sequences
Manually initiated protective action or automatic system monitoring
Running tasks with empirical feedback to identify problems
Well-defined tasks by programs, i.e. people can understand and execute specified steps based on rules;
and (4) performing human interaction.
In this embodiment, the feature elements associated with error-prone factors should include factors that present challenges to personnel or force the occurrence of errors to verify the ability of personnel to recover from errors.
Specifically, the feature elements related to the error-prone factors include: high intensity workload conditions, varying workload conditions, fatigue conditions, and environmental factors.
The detailed characteristic elements are shown in table 1.
TABLE 1 feature element set (enumeration)
Scene acquisition
One) scene range determination. Considering the operation condition feature elements in the feature element collection, each scene in the scene set should consider normal operation, operation events and accidents. 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, the accidents handled by the symptom oriented accident handling procedure (SEOP) should be considered.
Two) the source of the incident scene in the scene set. The accident scene acquisition should ensure that all accident handling procedures are covered in the final scene verification. The symptom oriented method accident handling procedure (SEOP) of Fuqing nuclear power unit No. 5 and 6 (namely Hualong I) comprises E type procedures and F type procedures, and the list of the procedures is as follows:
TABLE 2 symptom guide method accident handling protocol
And (3) sorting all accidents mentioned in the symptom oriented method accident handling procedure (SEOP) to form an accident scene set, wherein the accident scene set is used as an accident scene part of the scene set.
And thirdly) forming a table.
The columns of the table place the feature elements and the rows of the table place the scenes (events or incidents) as shown in table 3.
TABLE 3 characteristic element-scene summary sheet
For all accident scenes in the scene set, the feature element related to the accident scene is selected from the feature element-scene summary table, such as related, record 1, such as unrelated, and record 0. See the accident "minor break in primary loop" in table 4 for example.
TABLE 4 characteristic elements-Accident scene correspondence table (enumeration)
And setting events or operating operations in a targeted manner for the characteristic elements which are not related to the accident in the characteristic element total set.
Such as: for the characteristic element of 'power plant start', the operation 'rush to grid connection' is set, and for the characteristic element of 'instrument control system and man-machine interface failure or degradation', an event 'loss of KIC system' is set, see Table 5.
TABLE 5 characteristic elements-event or operational scenario correspondence table (enumeration)
Four) scenes eliminate redundancy.
And overlapping accident scenes with high feature element overlap ratio (more than 90%) or completely overlapped but applying different rules to form a first overlapped scene, and performing parallel operation on feature element subsets corresponding to a plurality of scenes forming the first overlapped scene to form a feature element subset corresponding to the feature element subsets.
And for accident scenes with high feature element overlap ratio (more than 90 percent) or completely overlapped feature elements and using the same rule, reserving one accident scene and the corresponding feature element subset thereof, and deleting other accident scenes and the corresponding feature element subset thereof.
And for the accident or event with larger difference of the characteristic elements, forming a second superposition scene in a superposition mode, and performing parallel operation on the characteristic element subsets corresponding to a plurality of scenes forming the second superposition scene to form the corresponding characteristic element subsets.
Examples are as follows: for the 'unit power reduction', the characteristic element of 'significant change of operating power (normal operating condition)' is met, and for the 'pump following tripping', the characteristic elements of 'shutdown of power plant (normal operating condition)' and 'transient state' are met. The large break of the primary loop is a design reference accident, and the characteristic elements cannot be verified, so that the three events or accidents are superposed according to the method, and the details are shown in table 6.
TABLE 6 event or Accident overlay schematic
In the above-mentioned superposition and deletion processes, it should be ensured that the finally obtained target scene set satisfies: any feature element in the total set of feature elements is included in a subset of feature elements corresponding to at least one scene.
Five) form a set of target scenes
Through the steps, a scene set which meets the selection principle, covers the selection principle comprehensively and eliminates redundancy can be formed, scenes in the set completely cover all accident regulations and all characteristic elements, comprehensive, rigorous and accurate source data are provided for nuclear power comprehensive scene verification, and workload of nuclear power comprehensive scene verification is greatly reduced.
Example 2:
the embodiment provides a nuclear power comprehensive scene verification method, which is continuously referred to fig. 1 and comprises the following steps:
s1: selecting a scene by adopting the scene selection method for nuclear power comprehensive scene verification in the embodiment 1;
s2: defining and describing each scene in the target scene set obtained in the step S1 to form a scene description;
after determining the scene set according to the method of embodiment 1, each scene needs to be defined and described. The operation conditions and scenes suitable for comprehensive scene verification are clearly defined, and scene details suitable for the application of the simulator are formulated. For each scene, the following information should be defined:
describing specific initial conditions of the unit;
event or incident description (incident overlay);
describing important time nodes of a scene;
feature elements covered by the scene;
personnel allocation requirements required by the scene;
personnel operating procedures covered by the scene;
important personnel actions;
personnel response and process record files;
the specific condition of the scene is terminated.
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 the paving 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 built-in comprehensive scene simulation software thereof are mature products and can be purchased in the market.
S4: step S3 is repeated until all scenes in the target scene set are verified.
In scene verification, an observer team is required to be formed, and the observer team screens scenes, prepares programs and process record files required by the scenes, supervises the verification process of the whole scene, and records environmental factors and personnel states related to scene verification. And 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 cooperates with an observer to finish scene related evaluation activities.
Examples are: the in-containment steam line rupture accident scenario 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 a containment occurs, safety injection is triggered, an operator confirms an alarm and enters an E20 specification from E00, after all main pumps are shut down, the unit isolates a fault evaporator according to E20, enters an E10 specification stable nuclear steam supply system, and the operation is finished after being backed up.
Scene important time nodes are as follows:
-T0- -full power, upper thrust pump periodic switching test
-T1- -steam line break in SG1 shell, T0+10min
-T2-scene end
The characteristic elements covered by the scene are as follows:
accident
Vital personnel actions, systems and accident sequences
Automated system for monitoring risk of personnel
Management program
General operating procedure for power plants
Safety-related system start, run, stop program
Abnormal, off-position and alarm program
Procedure for handling emergencies and other significant events
Procedure for controlling a measuring and testing device
Procedure for periodic monitoring and calibration
Operation and maintenance program
Master control room operators and auxiliary operators perform tasks locally with other plant personnel
Important personnel actions of the scene comprise:
confirming shutdown and shutdown
Controlling the temperature and SG level of a loop
Controlling water level and pressure of a pressure stabilizer
Coverage procedures
FQ5-E00-TPOPAC-0000 stop or safety injection K
FQ5-E20-TPOPAC-0000 burst steam generator isolation E
FQ5-E10-TPOPAC-0000 loss of coolant in one or two circuits E
FQ5-E11-TPOPAC-0000 Anzhu stop K
Staffing requirements
The observer needs to have scene verification experience or training, select the scene and be familiar with the scene, and fully prepare the relevant programs and various record files of the scene.
The operation executor is born by an operator and a high-level operator, and is matched with the operator to implement scene simulation.
Example 3:
the present embodiment provides a scene selection device corresponding to the selection method for nuclear power integrated scene verification in embodiment 1, with reference to fig. 2, including:
the first acquisition module 11 is used 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 characteristic element total set,
a second acquisition module 12 for acquiring scenes of the nuclear power plant related to normal operation, operational events and accidents to form a scene set,
a selecting module 13, configured to select, for each scene in a scene set, a feature element related to each 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 superimposing module 141 is configured to superimpose multiple scenes in which the coincidence degree of the feature elements in the scene set is higher than 90% and different accident handling procedures are applied by a symptom guide method to form a first superimposed scene, and perform a parallel operation on multiple feature element subsets respectively corresponding to the multiple scenes forming the first superimposed scene to form a feature element subset corresponding to the first superimposed scene;
a second superimposing module 142, configured to superimpose multiple scenes with a feature element overlap ratio lower than 50% in a scene set to form a second superimposed scene, and perform a parallel operation on multiple feature element subsets corresponding to the multiple scenes forming the second superimposed scene to form a feature element subset corresponding to the second superimposed scene;
a deleting module 143, configured to delete N-1 scenes and feature element subsets corresponding to the N scenes, where the coincidence degree of the feature elements in the scene set is higher than 90% and the same accident handling procedure is applied by the symptom guide method, where N is greater than or equal to 2;
and 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.
Example 4:
the present embodiment provides a nuclear power comprehensive scenario verification system, referring to fig. 3, which includes: a definition and description module 2, a scene verification simulator 3, and the scene selection device 1 for nuclear power integrated 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 definition and description module 2 is electrically connected with the scene verification simulator 3, and is configured to define and describe each scene in the target scene set (see embodiment 2 for details of definition and description of the scene), form a scene description, and sequentially transmit each scene description to the scene verification simulator 3;
the scene verification simulator 3 is used for performing simulation verification on the corresponding scenes according to the scene description in sequence 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 will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (10)
1. A scene selection method for nuclear power comprehensive scene verification is characterized by comprising the following steps:
collecting 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 characteristic element total set,
collecting scenes of the nuclear power plant related to normal operation, operation events and accidents to form a scene set,
for each scene in a scene set, selecting feature elements related to the scene from a feature element total set to form a feature element subset corresponding to the scene, wherein the scene set satisfies 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;
superposing a plurality of scenes which have feature element superposition degrees higher than a first set value and apply different accident handling procedures of a symptom guide method in a scene set to form a first superposed scene, and performing parallel operation on a plurality of feature element subsets respectively corresponding to the plurality of scenes forming the first superposed scene to form a feature element subset corresponding to the first superposed scene;
superposing a plurality of scenes with the feature element superposition degree lower than a second set value in a scene set to form a second superposed scene, and performing parallel operation on a plurality of feature element subsets respectively corresponding to the plurality of scenes forming the second superposed scene to form a feature element subset corresponding to the second superposed scene;
deleting N-1 scenes and corresponding feature element subsets in the N scenes, wherein the coincidence degree of the feature elements in the scene set is higher than a third set value and the same accident handling procedure is applied by a symptom guide method, wherein N is more than or equal to 2;
thereby 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: any feature element in the total set of feature elements is included in a subset of feature elements corresponding to at least one scene.
2. The scene selection method for nuclear power integrated scene verification according to claim 1, wherein the characteristic elements related to the operating conditions include the following two categories: normal running operation, and transients and accidents.
3. The scene selection method for nuclear power integrated scene verification according to claim 1, wherein the feature elements related to the personnel tasks include the following five categories: important personnel actions, system and accident sequences, manually initiated protective actions or automated system monitoring, tasks where empirical feedback is run to identify problems, tasks well defined by programs, and personnel interactions.
4. The scene selection method for nuclear power integrated scene verification according to claim 1, wherein the feature elements related to error-prone factors include: high intensity workload conditions, varying workload conditions, fatigue conditions, and environmental factors.
5. The scene selection method for nuclear power integrated scene verification according to claim 1, characterized in that all accidents processed by all accident handling procedures of a symptom oriented method are used as scenes related to accidents in the scene set.
6. The scene selection method for nuclear power comprehensive scene verification according to any one of claims 1 to 5, wherein the first set value is 85 to 95%, the second set value is 45 to 55%, and the third set value is 85 to 95%.
7. A scene selection device for nuclear power comprehensive scene verification is characterized by comprising:
the first acquisition module is used 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 characteristic element total set,
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 feature elements related to each scene in the scene set from the feature element total set to form a feature element subset corresponding to the scene, wherein the scene set meets the condition that any feature element in the feature element total set is contained in at least one feature element subset corresponding to the scene;
the first superposition module is used for superposing a plurality of scenes which have the feature element superposition degree higher than a first set value and apply different accident handling procedures of a symptom guide method in a scene set to form a first superposition scene, and performing parallel 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 a scene set to form a second superposed scene, and performing parallel operation on a plurality of feature element subsets respectively corresponding to the plurality of scenes forming the second superposed scene to form a feature element subset corresponding to the second superposed scene;
the deleting module is used for deleting N-1 scenes and the corresponding characteristic element subset in the N scenes which have the characteristic element contact ratio higher than a third set value and apply the same accident handling procedure of the symptom guide method;
and 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.
8. A nuclear power comprehensive scene verification method comprises the following steps:
s1: the scene selection method of nuclear power integrated scene verification according to any one of claims 1 to 6 is adopted for scene selection,
s2: defining and describing each scene in the target scene set obtained in step S1, forming a 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: step S3 is repeated until all scenes in the target scene set are verified.
9. The nuclear power integrated scene verification method according to claim 8, wherein the content defining and describing the scene includes:
describing specific initial conditions of the unit;
an event or incident description;
describing important time nodes of a scene;
a subset of feature elements corresponding to the scene;
personnel allocation requirements required by the scene;
personnel operating procedures covered by the scene;
important personnel actions;
personnel response and process record files;
the specific condition of the scene is terminated.
10. A nuclear power comprehensive scene verification system comprises: a definition and description module, a scene verification simulator, and a scene selection device for nuclear power integrated scene verification according to claim 7,
the scene selection device is electrically connected with the definition and description module 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,
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, forming scene descriptions and transmitting the scene descriptions to the scene verification simulator in sequence,
the scene verification simulator is used for simulating and verifying corresponding scenes according to the scene description in sequence and outputting a verification report.
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