CN114118720A - Nuclear power plant circulating water pump operation state comprehensive evaluation method and device, electronic equipment and storage medium - Google Patents
Nuclear power plant circulating water pump operation state comprehensive evaluation method and device, electronic equipment and storage medium Download PDFInfo
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Abstract
The invention relates to a comprehensive evaluation method and a comprehensive evaluation device for the running state of a circulating water pump of a nuclear power plant, electronic equipment and a storage medium, wherein the comprehensive evaluation method comprises the following steps: s1, analyzing equipment fault modes of the circulating water pump to obtain corresponding fault modes and fault phenomena; s2, acquiring corresponding measuring points and monitoring data thereof according to the fault phenomenon; s3, establishing a characteristic index extraction model corresponding to the fault phenomenon to obtain a corresponding characteristic index, and obtaining an index parameter value according to corresponding monitoring data, a calculation model and a calculation model variable; s4, establishing a fault diagnosis model corresponding to the fault phenomenon to judge whether the fault phenomenon occurs; s5, acquiring the weight value of the fault diagnosis model according to the fault consequence of the fault phenomenon, and establishing an evaluation model of the circulating water pump according to all the fault diagnosis models and the weight values thereof; and S6, acquiring a comprehensive evaluation result of the circulating water pump according to the evaluation model and the model calculation results of all the fault diagnosis models. The implementation of the invention can realize the real-time comprehensive evaluation of the circulating water pump.
Description
Technical Field
The invention relates to the field of operation and maintenance management of circulating water pump equipment of a nuclear power plant, in particular to a comprehensive evaluation method and device for the operation state of a circulating water pump of a nuclear power plant, electronic equipment and a storage medium.
Background
The circulating water pump of the nuclear power plant is the most important cold source equipment of the power plant, the safe and reliable operation of the circulating water pump is the important basis for guaranteeing the nuclear safety, the circulation is taken as the major and complicated transfer equipment, the vibration state is the key element for evaluating the operation state of the circulating water pump, and the vibration state of the circulating pump needs to be evaluated in order to avoid huge economic loss caused by damage to the equipment.
Under the traditional mode, the vibration state of the circulating water pump can only be evaluated regularly by a vibration expert, the evaluation period is long, the continuity is not provided, the condition that equipment is damaged in the evaluation interval period is often caused, the whole use is interrupted, and the operation of the whole nuclear power plant is influenced.
Disclosure of Invention
The invention aims to provide a method and a device for comprehensively evaluating the running state of a circulating water pump of a nuclear power plant, electronic equipment and a storage medium.
The technical scheme adopted by the invention for solving the technical problems is as follows: the method for comprehensively evaluating the running state of the circulating water pump of the nuclear power plant comprises the following steps:
s1, analyzing equipment fault modes of the circulating water pump to obtain a fault mode corresponding to the circulating water pump and a fault phenomenon corresponding to the fault mode;
s2, acquiring a corresponding preset sensor measuring point according to the fault phenomenon, and acquiring monitoring data of the preset sensor measuring point;
s3, establishing a characteristic index extraction model corresponding to the fault phenomenon to obtain a characteristic index corresponding to the fault phenomenon, and obtaining a parameter value corresponding to the characteristic index according to monitoring data, a calculation model and a calculation model variable corresponding to the fault phenomenon corresponding to the characteristic index;
s4, establishing a fault diagnosis model corresponding to the fault phenomenon according to the fault phenomenon, and judging whether the fault phenomenon occurs or not through the fault diagnosis model according to the parameter value corresponding to the characteristic index so as to output a diagnosis result, wherein the fault diagnosis model is a function containing the parameter value of the characteristic index;
s5, obtaining a weight value of a fault diagnosis model corresponding to the fault phenomenon according to the severity of the fault consequence of the fault phenomenon, and establishing an evaluation model of the circulating water pump according to the fault diagnosis models corresponding to all the fault phenomena and the weight values corresponding to the fault phenomena, wherein the evaluation model is a function of the fault diagnosis models and the weight values;
and S6, obtaining a comprehensive evaluation result of the running state of the circulating water pump according to the evaluation model and the model calculation results of the fault diagnosis models corresponding to all the fault phenomena.
Preferably, in the comprehensive evaluation method for the operation state of the circulating water pump of the nuclear power plant, the fault phenomena include an early fault phenomenon and a late fault phenomenon corresponding to the fault mode.
Preferably, in the method for comprehensively evaluating the operating state of the circulating water pump of the nuclear power plant according to the present invention, in the step S3,
and calculating and obtaining a calculation model variable in the characteristic index extraction model through a component structure corresponding to the fault mode.
Preferably, in the method for comprehensively evaluating the operating state of the nuclear power plant circulating water pump according to the present invention, in step S2, the monitoring data includes: vibration data including vibration acceleration data, vibration velocity data, displacement data, and vibration waveform envelope data, as well as temperature data and flow data.
Preferably, in the comprehensive evaluation method for the operation state of the circulating water pump of the nuclear power plant, in the step S3, the parameter value corresponding to the characteristic index is obtained according to the calculation model corresponding to the characteristic index and the monitoring data; the method comprises the following steps:
processing the vibration data based on a calculation model corresponding to a frequency spectrum, a cepstrum, a sideband energy and/or a harmonic and the calculation model variables to obtain a frequency spectrum characteristic parameter value, a cepstrum characteristic parameter value, a sideband energy characteristic value and/or a harmonic characteristic parameter value corresponding to the fault phenomenon.
Preferably, in the comprehensive evaluation method for the operation state of the nuclear power plant circulating water pump according to the present invention, in step S4, the fault diagnosis model is a function including the characteristic index parameter value; the method comprises the following steps:
acquiring the characteristic indexes corresponding to the fault phenomena, setting the threshold values corresponding to the characteristic indexes, and establishing an operation relation among all the corresponding characteristic indexes of the fault phenomena according to the indexes and the threshold values, wherein the operation relation is a combined operation comprising a logic operation, an arithmetic operation or a relational operation.
Preferably, in the method for comprehensively evaluating the operation state of the circulating water pump of the nuclear power plant, the method further includes:
classifying the fault phenomenon based on the severity of the fault consequence corresponding to the fault phenomenon when the fault phenomenon occurs independently so as to obtain a weight value of a fault diagnosis model corresponding to the fault phenomenon according to the classification; and/or
Setting the health grade of the circulating water pump;
the acquiring of the comprehensive evaluation result of the running state of the circulating water pump according to the evaluation model and the model calculation results of the fault diagnosis models corresponding to all the fault phenomena includes:
and obtaining the current health level of the circulating water pump according to the evaluation model and the model calculation results of the fault diagnosis models corresponding to all the fault phenomena.
The invention also constructs a comprehensive evaluation device for the running state of the circulating water pump of the nuclear power plant, which comprises the following components: the method comprises the following steps:
the fault analysis unit is used for carrying out equipment fault mode analysis on the circulating water pump so as to obtain a fault mode corresponding to the circulating water pump and a fault phenomenon corresponding to the fault mode;
the measuring point confirming unit is used for acquiring corresponding preset sensor measuring points according to the fault phenomenon;
the monitoring data acquisition unit is used for acquiring monitoring data of the preset sensor measuring point;
a first model establishing unit, configured to establish a feature index extraction model corresponding to the fault phenomenon, so as to obtain a feature index corresponding to the fault phenomenon through the feature index extraction model;
the first calculation unit is used for acquiring a parameter value corresponding to the characteristic index according to the monitoring data, the calculation model and the calculation model variable corresponding to the characteristic index;
a second model establishing unit for establishing a failure diagnosis model corresponding to the failure phenomenon based on the failure phenomenon,
the second calculation unit is used for judging whether the fault phenomenon occurs or not through the fault diagnosis model according to the parameter value corresponding to the characteristic index so as to output a diagnosis result, wherein the fault diagnosis model is a function containing the parameter value of the characteristic index;
the weight confirming unit is used for acquiring the weight value of the fault diagnosis model corresponding to the fault phenomenon according to the fault consequence of the fault phenomenon;
the third model establishing unit is used for establishing an evaluation model of the circulating water pump according to fault diagnosis models corresponding to all fault phenomena and weight values corresponding to the fault diagnosis models, wherein the evaluation model is a function of the fault diagnosis models and the weight values;
and the evaluation result output unit is used for acquiring a comprehensive evaluation result of the running state of the circulating water pump according to the evaluation model and the model calculation results of the fault diagnosis models corresponding to all the fault phenomena.
The invention also provides a computer storage medium, on which a computer program is stored, which, when being executed by a processor, implements the comprehensive evaluation method for the operating state of the circulating water pump of the nuclear power plant.
The invention also features an electronic device including a memory and a processor;
the memory is used for storing a computer program;
the processor is used for executing the computer program to realize the comprehensive evaluation method for the operation state of the nuclear power plant circulating water pump.
The comprehensive evaluation method and device for the running state of the circulating water pump of the nuclear power plant, the electronic equipment and the storage medium have the following beneficial effects that: the vibration state of the circulating water pump can be automatically evaluated in real time, decision basis can be provided for operation management of the circulating pump of the power plant, and state-based equipment maintenance is promoted.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a flowchart of a process of an embodiment of a comprehensive evaluation method for an operation state of a circulating water pump of a nuclear power plant according to the present invention;
fig. 2 is a logic block diagram of an embodiment of the comprehensive evaluation device for the operation state of the circulating water pump of the nuclear power plant.
Detailed Description
For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
As shown in fig. 1, in a first embodiment of the method for comprehensively evaluating the operation state of the circulating water pump of the nuclear power plant, the method includes the following steps: s1, analyzing the equipment fault mode of the circulating water pump to obtain the fault mode corresponding to the circulating water pump and the fault phenomenon corresponding to the fault mode; specifically, equipment fault mode analysis is carried out on the circulating water pump according to historical data or empirical data to obtain fault modes which may occur to the circulating water pump, and corresponding fault phenomena and corresponding fault consequences are obtained based on each fault mode. It can be understood that the fault can be discriminated according to the fault phenomenon and the fault consequence, so as to obtain the fault mode needing to participate in the post-processing and the corresponding fault phenomenon. The method can be used for analyzing and acquiring the equipment fault mode of the circulating water pump. The analysis mode and the specific process of analysis can adopt the analysis process and method which are currently and generally used.
S2, acquiring a corresponding preset sensor measuring point according to the fault phenomenon, and acquiring monitoring data of the preset sensor measuring point; specifically, for a specific position where a fault phenomenon occurs, which may correspond to a fault phenomenon occurring in the circulating water pump, a measuring point may be set at the corresponding position based on the specific position corresponding to the fault phenomenon, that is, a sensor measuring point is preset. It can be understood that there may be more than one fault occurrence location, and there may be more than one corresponding to the number of the preset sensor measurement points corresponding to the fault. Based on different fault phenomena, the positions of the fault phenomena may be the same, and some preset sensor measuring points in the plurality of preset sensor measuring points corresponding to one fault phenomenon may overlap with the preset sensor measuring points corresponding to other fault phenomena. Monitoring data of part of the preset sensor measuring points in the monitoring data of the corresponding preset sensor measuring points acquired based on the fault phenomenon may also be part of the monitoring data corresponding to other fault phenomena. It can be understood that a fault phenomenon is unambiguous as to which of the predetermined sensor stations are associated. In a specific embodiment, the preset sensor measuring point can also preset the channel serial number of the sensor, and the monitoring data is the data of one sensor. The method is characterized in that the method corresponds to a fault phenomenon, and in the data processing process, the method can correspond to monitoring data according to the channel serial number only by acquiring the channel serial number of the corresponding sensor.
S3, establishing a characteristic index extraction model corresponding to the fault phenomenon to obtain a characteristic index corresponding to the fault phenomenon, and obtaining a parameter value corresponding to the characteristic index according to monitoring data, a calculation model and a calculation model variable corresponding to the fault phenomenon corresponding to the characteristic index; specifically, it may obtain a feature index related to occurrence of a fault phenomenon according to fault phenomenon analysis, and obtain a corresponding feature index for each fault phenomenon by establishing a feature index extraction model corresponding to the fault phenomenon, for example, the feature index obtained according to the fault phenomenon corresponding to the "tooth surface wear, spalling" fault mode of the circulating water pump may be M1: an amplitude of the meshing frequency; m2: the amplitude of the frequency conversion sideband of the fault gear with the meshing frequency; m3: a natural frequency amplitude; m4: a total value of vibration; m5: the amplitude of the frequency conversion sideband of the fault gear with the natural frequency; m6: oil particles. Each characteristic index has a corresponding calculation model, and the parameter value of each characteristic index can be obtained through the calculation model and the monitoring data. It can be understood that the feature index and the calculation model thereof are corresponding, once the type of the feature index is known, the corresponding calculation model thereof can be known, and the calculation model can be obtained according to a general calculation method or formula of the feature index.
S4, establishing a fault diagnosis model corresponding to the fault phenomenon according to the fault phenomenon, and judging whether the fault phenomenon occurs or not through the fault diagnosis model according to the parameter value corresponding to the characteristic index so as to output a diagnosis result, wherein the fault diagnosis model is a function containing the parameter value of the characteristic index; specifically, a fault diagnosis model corresponding to each fault phenomenon is established, and whether the fault phenomenon occurs is judged through the fault diagnosis model. The fault diagnosis model is a functional relation established by the characteristic indexes and the corresponding parameter values. And comparing different fault phenomena, wherein the different fault phenomena need to be judged through different characteristic indexes. Therefore, it can be understood that the fault diagnosis model and the fault phenomena are also in a one-to-one correspondence relationship, and the number of the obtained fault phenomena is analyzed, so that the number of the established fault diagnosis model is also the number of the obtained fault phenomena. And each fault diagnosis model performs function calculation on the characteristic parameter values corresponding to the corresponding fault phenomena, and finally outputs a diagnosis result for showing the fault.
S5, obtaining a weight value of a fault diagnosis model corresponding to the fault phenomenon according to the severity of the fault consequence of the fault phenomenon, and establishing an evaluation model of the circulating water pump according to the fault diagnosis models corresponding to all the fault phenomena and the weight values corresponding to the fault phenomena, wherein the evaluation model is a function of the fault diagnosis models and the weight values thereof; specifically, it can be understood that the fault consequences of each fault phenomenon are different, for example, some fault phenomena have light fault consequences, i.e., have a small influence on the operation of the equipment, and some fault phenomena have severe fault consequences, i.e., seriously affect or interrupt the operation of the equipment. And according to the fault consequence caused by the fault phenomenon, carrying out weight assignment on the corresponding fault diagnosis model to obtain a corresponding weight value. And after obtaining the weight values of all the fault diagnosis models, establishing a functional relation according to the fault diagnosis models and the weight values thereof so as to obtain an evaluation model of the circulating water pump.
And S6, acquiring a comprehensive evaluation result of the running state of the circulating water pump according to the evaluation model and the model calculation results of the fault diagnosis models corresponding to all fault phenomena. Specifically, the comprehensive evaluation result of the running state of the circulating water pump is obtained according to the evaluation model and the model calculation results of the fault diagnosis model which are all the obtained diagnosis results of the fault phenomenon.
In a specific embodiment, the method identifies key components of the circulating water pump including a gear sleeve coupling, a planetary gear, a rolling bearing, a sliding bearing, a single-stage centrifugal pump and a motor according to empirical feedback, and identifies fault modes of the key components, examples of which are shown in table 1.
Table 1: critical component failure mode analysis examples
Optionally, the failure phenomena include an early failure phenomenon and a late failure phenomenon corresponding to the failure mode. Specifically, the possible failure phenomena in the failure mode include an early failure phenomenon and a late failure phenomenon. That is, the possible fault phenomenon occurring in the early stage of the occurrence of the failure mode is an early-stage fault phenomenon, and the possible fault phenomenon occurring in the later stage of the occurrence of the failure mode is a late-stage fault phenomenon. It can also be understood that the early fault phenomenon and the late fault phenomenon actually belong to different fault phenomena, and the corresponding preset sensor measuring points, the characteristic index extraction model and the fault diagnosis model are different. That is, in steps S2 to S5, the actions thereof based on the fault phenomenon, including based on the early fault phenomenon and the late fault phenomenon, are performed separately. In one embodiment, the failure mode "flank wear, spalling" corresponds to the failure phenomena shown in table 2.
Table 2: failure phenomenon analysis example
Optionally, in the comprehensive evaluation method for the operation state of the nuclear power plant circulating water pump, the calculation model variables in the characteristic index extraction model are obtained by calculating the component structure corresponding to the fault mode. Specifically, for the calculation of parameter values of characteristic indexes of some complex standard components, it is necessary to establish or modify a calculation model of component structure parameters of the corresponding component. And calculating parameter values of characteristic indexes such as rolling frequency of the rolling bearing, meshing frequency of the gear and the like. The component structure parameters can be obtained based on the key components of the circulating water pump obtained by analyzing the equipment failure mode, namely, each key component can establish a corresponding component structure parameter model. When the characteristic index parameter value corresponding to the fault phenomenon is calculated, the corresponding component is obtained according to the fault phenomenon, the corresponding component structure parameter model is obtained according to the component, the corresponding component structure parameter is finally obtained according to the component structure parameter model, and the calculation model of the characteristic index is finally obtained correspondingly. The process is used for calculating the characteristic index parameter values with strong correlation of the component structure parameters. In an embodiment, it may also modify or establish the calculation model corresponding to the characteristic index in a direct input manner.
Optionally, in step S2, the monitoring data includes: vibration data including vibration acceleration data, vibration velocity data, displacement data, and vibration waveform envelope data, as well as temperature data and flow data. Specifically, the monitoring data may be various, and may include environmental parameters such as temperature and humidity, and may also include various vibration data, where the vibration data may be common data such as vibration acceleration data, vibration velocity data, displacement data, and vibration waveform envelope data.
Optionally, in step S3, obtaining a parameter value corresponding to the characteristic index according to the calculation model and the monitoring data corresponding to the characteristic index; the method comprises the following steps: the vibration data is processed based on a computational model and computational model variables corresponding to the frequency spectrum, cepstrum, sideband energy, and/or harmonics to obtain frequency spectrum parameter values, cepstrum parameter values, sideband energy values, and/or harmonic parameter values corresponding to the fault phenomenon. Specifically, the characteristic index parameter value obtained by analyzing the common vibration data may be a frequency spectrum parameter value, a cepstrum parameter value, a sideband energy value, and/or a harmonic parameter value corresponding to the fault phenomenon calculated by a common frequency spectrum, cepstrum, sideband energy, and/or harmonic calculation model.
Optionally, in step S4, the fault diagnosis model is a function containing the characteristic index parameter value; the method comprises the following steps: acquiring the characteristic indexes corresponding to the fault phenomena, setting the threshold values corresponding to the characteristic indexes, and establishing an operation relation between all the corresponding characteristic indexes of the fault phenomena according to the indexes and the threshold values, wherein the operation relation is a combined operation comprising a logic operation, an arithmetic operation or a relational operation. Specifically, the fault diagnosis model may be an operational relation of the characteristic indexes. The operation relation can be a combination of various common operation modes. For example, the six characteristic indexes M1-M6 obtained from the fault phenomenon corresponding to the "tooth surface wear and spalling" fault mode of the circulating water pump can be used for establishing the following relational expression and referring to table 3 to obtain a fault diagnosis model of the fault phenomenon.
Table 3: analysis example of feature indicators and diagnostic logic
In this case, the threshold value is set for the characteristic index or the relationship of the characteristic index, and finally the output result of "0" or "1" can be obtained, and in an embodiment, it can also be understood that the diagnosis result of "yes" or "no" is obtained correspondingly. If "0" or "no" is obtained, it is judged that the failure has not occurred, and if "1" or "yes" is obtained, it is judged that the failure has occurred. It can be understood that the logical relations corresponding to different fault phenomena are also different.
Optionally, in the comprehensive evaluation method for the operation state of the nuclear power plant circulating water pump of the invention, the method further includes: and classifying the fault phenomenon based on the severity of the corresponding fault consequence when the fault phenomenon occurs independently so as to obtain the weight value of the fault diagnosis model according to the classification. Specifically, the weight assignment process for the fault diagnosis model may refer to the fault consequences that can be caused when the corresponding fault phenomenon occurs alone. For example, if a fault occurs alone, the performance of the device may be degraded, but a weight value may be taken for long-term operation, if a fault occurs alone, the performance of the device may be significantly degraded, which is acceptable in a short period of time, but the weight value may not be taken for long-term operation, if a fault occurs alone, the device may be severely degraded, and if a fault stops or the device is severely damaged, another weight value may be taken for a short period of time.
Optionally, in the comprehensive evaluation method for the operation state of the nuclear power plant circulating water pump of the invention, the method further includes: setting the health grade of the circulating water pump; obtaining a comprehensive evaluation result of the running state of the circulating water pump according to the evaluation model and model calculation results of the fault diagnosis models corresponding to all fault phenomena, wherein the comprehensive evaluation result comprises the following steps: and obtaining the current health grade of the circulating water pump according to the evaluation model and the model calculation results of the fault diagnosis models corresponding to all fault phenomena. The health state of the circulating water pump can be graded to obtain a plurality of health grades of the circulating water pump, and the current health state of the circulating water pump can be finally obtained according to the graded health grades and the evaluation result when the circulating water pump is comprehensively evaluated.
In a specific embodiment, the weight values of the failure diagnosis model can be classified into three levels, i, ii, and iii, according to the corresponding equipment degradation degree after the failure diagnosis model gives an alarm. The vibration health status of the equipment comprises 4 grades which are respectively green, white, yellow and red according to the severity degree represented by status color, and the relationship between the health status color and the alarm quantity of the diagnostic model is shown in a table 4.
Table 4: health status and diagnostic model alarm quantity relationship
When no fault diagnosis model alarms, the state is corresponding to a green state, and when 3 or the following fault diagnosis models with the weight of I level are triggered to alarm, the state is corresponding to a white state; when a fault diagnosis model alarm with 4 or more than I-level weights is triggered or a fault diagnosis model alarm with 3 or less than II-level weights is triggered, the alarm is in a yellow state; when the fault diagnosis model alarm of 4 or more II-level weights or the fault diagnosis model alarm of 3 or less III-level weights is triggered, the state is corresponding to a red state.
As shown in fig. 2, the comprehensive evaluation device for the operating state of the circulating water pump of the nuclear power plant according to the present invention includes:
the fault analysis unit 110 is configured to perform equipment fault mode analysis on the circulating water pump to obtain a fault mode corresponding to the circulating water pump and a fault phenomenon corresponding to the fault mode;
a measuring point confirming unit 120, configured to obtain a corresponding preset sensor measuring point according to a fault phenomenon;
a monitoring data obtaining unit 130, configured to obtain monitoring data of a preset sensor measuring point;
a first model establishing unit 141 for establishing a feature index extraction model corresponding to the fault phenomenon to obtain a feature index corresponding to the fault phenomenon through the feature index extraction model;
the first calculating unit 151 is configured to obtain a parameter value corresponding to the characteristic index according to the monitoring data, the calculation model, and the calculation model variable corresponding to the characteristic index;
a second model establishing unit 142 for establishing a fault diagnosis model corresponding to the fault phenomenon based on the fault phenomenon,
a second calculating unit 152, configured to determine whether a fault phenomenon occurs according to a parameter value corresponding to the characteristic indicator through a fault diagnosis model to output a diagnosis result, where the fault diagnosis model is a function including the parameter value of the characteristic indicator;
a weight confirming unit 160, configured to obtain a weight value of the fault diagnosis model corresponding to the fault phenomenon according to the severity of the fault consequence of the fault phenomenon;
a third model establishing unit 153, configured to establish an evaluation model of the circulating water pump according to the fault diagnosis models corresponding to all fault phenomena and the weight values corresponding to the fault phenomena, where the evaluation model is a function of the fault diagnosis models and the weight values thereof;
and the evaluation result output unit 170 is used for acquiring a comprehensive evaluation result of the running state of the circulating water pump according to the evaluation model and the model calculation results of the fault diagnosis models corresponding to all fault phenomena.
Specifically, the specific coordination operation process among the units of the comprehensive evaluation device for the operation state of the circulating water pump of the nuclear power plant may specifically refer to the comprehensive evaluation method for the operation state of the circulating water pump of the nuclear power plant, and is not described herein again.
In addition, an electronic device of the present invention includes a memory and a processor; the memory is used for storing a computer program; the processor is used for executing a computer program to realize the comprehensive evaluation method for the operation state of the circulating water pump of the nuclear power plant. In particular, according to an embodiment of the present invention, the processes described above with reference to the flowcharts may be implemented as a computer software program. For example, embodiments of the invention include a computer program product comprising a computer program embodied on a computer-readable medium, the computer program comprising program code for performing the method illustrated in the flow chart. In such embodiments, the computer program may be downloaded and installed by an electronic device and executed to perform the above-described functions defined in the methods of embodiments of the present invention. The electronic equipment can be a terminal such as a notebook, a desktop, a tablet computer, a smart phone and the like, and can also be a server.
In addition, the invention provides a computer storage medium, which stores a computer program, wherein the computer program is executed by a processor to realize the comprehensive evaluation method for the running state of the circulating water pump of the nuclear power plant. In particular, it should be noted that the computer readable medium of the present invention can be a computer readable signal medium or a computer readable storage medium or any combination of the two. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples of the computer readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the present invention, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. In the present invention, however, a computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, either in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to: electrical wires, optical cables, RF (radio frequency), etc., or any suitable combination of the foregoing.
The computer readable medium may be embodied in the electronic device; or may exist separately without being assembled into the electronic device.
It is to be understood that the foregoing examples, while indicating the preferred embodiments of the invention, are given by way of illustration and description, and are not to be construed as limiting the scope of the invention; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several changes and modifications can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the claims of the present invention.
Claims (10)
1. A comprehensive evaluation method for the running state of a circulating water pump of a nuclear power plant is characterized by comprising the following steps:
s1, analyzing equipment fault modes of the circulating water pump to obtain a fault mode corresponding to the circulating water pump and a fault phenomenon corresponding to the fault mode;
s2, acquiring a corresponding preset sensor measuring point according to the fault phenomenon, and acquiring monitoring data of the preset sensor measuring point;
s3, establishing a characteristic index extraction model corresponding to the fault phenomenon to obtain a characteristic index corresponding to the fault phenomenon, and obtaining a parameter value corresponding to the characteristic index according to monitoring data, a calculation model and a calculation model variable corresponding to the fault phenomenon corresponding to the characteristic index;
s4, establishing a fault diagnosis model corresponding to the fault phenomenon according to the fault phenomenon, and judging whether the fault phenomenon occurs or not through the fault diagnosis model according to the parameter value corresponding to the characteristic index so as to output a diagnosis result, wherein the fault diagnosis model is a function containing the parameter value of the characteristic index;
s5, obtaining a weight value of a fault diagnosis model corresponding to the fault phenomenon according to the severity of the fault consequence of the fault phenomenon, and establishing an evaluation model of the circulating water pump according to the fault diagnosis models corresponding to all the fault phenomena and the weight values corresponding to the fault phenomena, wherein the evaluation model is a function of the fault diagnosis models and the weight values;
and S6, obtaining a comprehensive evaluation result of the running state of the circulating water pump according to the evaluation model and the model calculation results of the fault diagnosis models corresponding to all the fault phenomena.
2. The comprehensive evaluation method for the operating state of the nuclear power plant circulating water pump according to claim 1, wherein the fault phenomena include an early fault phenomenon and a late fault phenomenon corresponding to the fault pattern.
3. The comprehensive evaluation method for the operating condition of the circulating water pump of the nuclear power plant according to claim 1, wherein in the step S3,
and calculating and obtaining a calculation model variable in the characteristic index extraction model through a component structure corresponding to the fault mode.
4. The method for comprehensively evaluating the operating state of the nuclear power plant circulating water pump according to claim 1, wherein in the step S2, the monitoring data includes: vibration data including vibration acceleration data, vibration velocity data, displacement data, and vibration waveform envelope data, and temperature data and flow data.
5. The comprehensive evaluation method for the operation state of the circulating water pump of the nuclear power plant according to claim 4, wherein in the step S3, the parameter value corresponding to the characteristic index is obtained according to the calculation model corresponding to the characteristic index and the monitoring data; the method comprises the following steps:
processing the vibration data based on a calculation model corresponding to a frequency spectrum, a cepstrum, a sideband energy and/or a harmonic and the calculation model variables to obtain a frequency spectrum characteristic parameter value, a cepstrum characteristic parameter value, a sideband energy characteristic value and/or a harmonic characteristic parameter value corresponding to the fault phenomenon.
6. The method for comprehensively evaluating the operating state of the nuclear power plant circulating water pump according to claim 1, wherein in the step S4, the fault diagnosis model is a function including the characteristic index parameter value; the method comprises the following steps:
acquiring the characteristic indexes corresponding to the fault phenomena, setting the threshold values corresponding to the characteristic indexes, and establishing an operation relation among all the corresponding characteristic indexes of the fault phenomena according to the indexes and the threshold values, wherein the operation relation is a combined operation comprising a logic operation, an arithmetic operation or a relational operation.
7. The comprehensive evaluation method for the operation state of the circulating water pump of the nuclear power plant according to claim 1, characterized by further comprising the following steps:
classifying the fault phenomenon based on the severity of the fault consequence corresponding to the fault phenomenon when the fault phenomenon occurs independently so as to obtain a weight value of a fault diagnosis model corresponding to the fault phenomenon according to the classification; and/or
Setting the health grade of the circulating water pump;
the acquiring of the comprehensive evaluation result of the running state of the circulating water pump according to the evaluation model and the model calculation results of the fault diagnosis models corresponding to all the fault phenomena includes:
and obtaining the current health level of the circulating water pump according to the evaluation model and the model calculation results of the fault diagnosis models corresponding to all the fault phenomena.
8. The utility model provides a comprehensive evaluation device of nuclear power plant circulating water pump running state which characterized in that includes:
the fault analysis unit is used for carrying out equipment fault mode analysis on the circulating water pump so as to obtain a fault mode corresponding to the circulating water pump and a fault phenomenon corresponding to the fault mode;
the measuring point confirming unit is used for acquiring corresponding preset sensor measuring points according to the fault phenomenon;
the monitoring data acquisition unit is used for acquiring monitoring data of the preset sensor measuring point;
a first model establishing unit, configured to establish a feature index extraction model corresponding to the fault phenomenon, so as to obtain a feature index corresponding to the fault phenomenon through the feature index extraction model;
the first calculation unit is used for acquiring a parameter value corresponding to the characteristic index according to the monitoring data, the calculation model and the calculation model variable corresponding to the characteristic index;
a second model establishing unit for establishing a failure diagnosis model corresponding to the failure phenomenon based on the failure phenomenon,
the second calculation unit is used for judging whether the fault phenomenon occurs or not through the fault diagnosis model according to the parameter value corresponding to the characteristic index so as to output a diagnosis result, wherein the fault diagnosis model is a function containing the parameter value of the characteristic index;
the weight confirming unit is used for acquiring the weight value of the fault diagnosis model corresponding to the fault phenomenon according to the severity of the fault consequence of the fault phenomenon;
the third model establishing unit is used for establishing an evaluation model of the circulating water pump according to fault diagnosis models corresponding to all fault phenomena and weight values corresponding to the fault diagnosis models, wherein the evaluation model is a function of the fault diagnosis models and the weight values;
and the evaluation result output unit is used for acquiring a comprehensive evaluation result of the running state of the circulating water pump according to the evaluation model and the model calculation results of the fault diagnosis models corresponding to all the fault phenomena.
9. A computer storage medium on which a computer program is stored, wherein the computer program, when executed by a processor, implements the comprehensive evaluation method for the operational status of a nuclear power plant circulating water pump according to any one of claims 1 to 7.
10. An electronic device comprising a memory and a processor;
the memory is used for storing a computer program;
the processor is used for executing the computer program to realize the comprehensive evaluation method for the operation state of the nuclear power plant circulating water pump according to any one of claims 1 to 7.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116125298A (en) * | 2022-11-28 | 2023-05-16 | 伏瓦科技(苏州)有限公司 | Battery fault detection method and device |
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