Operation monitoring and fault diagnosis platform and fault diagnosis method of control rod driving system

Abstract

The invention discloses an operation monitoring and fault diagnosis platform and a fault diagnosis method for a control rod driving system, relates to the technical field of nuclear power stations, and can enable the control rod driving system to more comprehensively cover technical points in the operation monitoring and fault diagnosis process, thereby greatly improving the operation and maintenance safety of the control rod driving system in the whole life period. The platform comprises a control rod driving system, a data acquisition module, a data processing module and a logic processing module, and operation data associated with different functional devices are acquired in real time through combination of the functional modules, so that multi-channel and high-precision real-time acquisition and storage of mass data are realized; and then distributing the operation data to different databases and / or different diagnosis platforms so as to perform fault diagnosis on the operation data and / or diagnosis intermediate data of the operation data through diagnosis logic of the diagnosis platforms.

Description

Technical Field

[0001] The present application relates to the technical field of nuclear power plants, and in particular to an operation monitoring and fault diagnosis platform and a fault diagnosis method for a control rod drive system. Background Art

[0002] The control rod drive system is one of the special instrumentation and control systems for the nuclear island of a nuclear power plant. It is used to provide power supply (sequential current) for the control rod drive mechanism, control the lifting, insertion and retention of the reactor control rods in the core, thereby adjusting the reactivity of the reactor, realizing the start-up, load operation and shutdown functions of the reactor, and monitoring the position of the control rods in the core. If the key components of the control rod drive system fail or performance degrades, failures such as slipping rods, sticking rods and rod position loss may occur, thus affecting the safe and economic operation of the reactor. In order to detect the performance degradation of its key components as early as possible so as to facilitate timely adjustments, it is necessary to monitor the operation and diagnose faults of the control rod drive system.

[0003] Related technologies for operation monitoring and fault diagnosis of control rod drive systems mainly include the following: current timing detection and action point analysis of control rod drive structure, rod position linearity analysis, rod drop time calculation, electrical performance monitoring of rod position detectors, electrical performance monitoring of control rod drive structure, performance change trend analysis of rod position detectors, performance change trend analysis of control rod drive structure, and equipment status monitoring of rod control rod position system. However, the technical points of operation monitoring and fault diagnosis of existing control rod drive systems cover a wide range, and it is difficult to fully achieve technical point coverage. Summary of the invention

[0004] In view of this, the present application provides an operation monitoring and fault diagnosis platform and a fault diagnosis method for a control rod drive system. The main purpose is to solve the problem that the technical points covered by the operation monitoring and fault diagnosis of the control rod drive system in the prior art are too broad and it is difficult to fully achieve technical point coverage.

[0005] According to a first aspect of the present application, there is provided an operation monitoring and fault diagnosis platform for a control rod drive system, comprising: a control rod drive system, a data acquisition module, a data processing module, and a logic processing module;

[0006] The data acquisition module is connected to the control rod drive system, and is used to obtain operation data associated with different functional devices in the control rod drive system, wherein the operation data is obtained by processing the original data of the different functional devices;

[0007] The data processing module is connected to the data acquisition module, and the data processing module is used to distribute the operation data acquired by the data acquisition module to different databases and / or different diagnostic platforms using data flow technology during operation monitoring and fault diagnosis, and to control the diagnosis intermediate data of the operation data to flow between different databases and / or different diagnostic platforms during fault diagnosis;

[0008] The logic processing module is connected to the data processing module, and the logic processing module is used to use the diagnostic algorithm interface to match the diagnostic logic of different diagnostic platforms, so as to perform fault diagnosis on the operating data and / or the diagnostic intermediate data of the operating data through the diagnostic logic of the different diagnostic platforms to obtain diagnostic result data.

[0009] Further, the control rod drive system includes a control rod drive mechanism, a rod position detector and a rod control rod position system, and the data acquisition module includes a data acquisition chassis, a first acquisition server and a second acquisition server;

[0010] The data acquisition chassis is respectively connected to the control rod drive mechanism, the rod position detector and the rod control rod position system, and the data acquisition chassis is used to receive different types of signals output by the control rod drive system, so as to transmit the different types of signals to the first acquisition server or the second acquisition server according to the signal interface type;

[0011] The first acquisition server is connected to the data acquisition chassis, and the first acquisition server is used to receive the signal input by hard wiring in the data acquisition chassis according to the signal interface type during the signal receiving process;

[0012] The second acquisition server is connected to the data acquisition chassis, and the second acquisition server is used to receive a signal input by network communication in the data acquisition chassis according to a signal interface type.

[0013] Further, the data acquisition module further comprises a signal conditioning unit, and the control rod driving mechanism is connected to the signal conditioning unit;

[0014] The signal conditioning unit is connected to the data acquisition chassis, and is used to receive the original signal output by the control rod drive mechanism, and to condition the original signal and transmit it to the data acquisition chassis;

[0015] The data acquisition chassis is connected to the rod control rod position system, and the data acquisition chassis is used to receive the current / voltage signal output by the rod control rod position device, so as to obtain a voltage signal matching the acquisition board after signal conditioning of the current / voltage signal;

[0016] The data acquisition box is connected to the rod position detector, and the data acquisition box is used to obtain the induced voltage of the change generated by the residual magnetism of the driving rod in the rod position detector coil when the control rod falls.

[0017] Furthermore, the data acquisition module also includes a secondary switch;

[0018] The secondary switch is connected to the rod position and rod control system and the second acquisition server respectively, and the secondary switch is used to obtain the current / voltage signal output by the rod position device in the rod position and rod control system, so as to transmit the current / voltage signal to the second acquisition server through network communication;

[0019] The secondary switch is connected to the logic processing module and the second acquisition server respectively. The secondary switch is used to obtain the device status information of the stick control and stick position system through the logic processing module, so as to transmit the device status information to the second acquisition server through network communication.

[0020] Further, the data processing module includes a data distribution server, a database server and a core switch, and the data acquisition module is connected to the core switch;

[0021] The data distribution server is connected to the core switch, and the core switch is used to receive the operation data acquired by the data acquisition module, so that the data distribution server is connected to the database server, the database backup server and the application server respectively through the core switch to realize data distribution;

[0022] The data distribution server is connected to the database server via the core switch, and the data distribution server stores operation data, diagnostic intermediate data of operation data and / or diagnostic result data via the database server during operation monitoring and fault diagnosis;

[0023] The data distribution server is connected to the database backup server via the core switch, and the data distribution server backs up and stores operation data, diagnostic intermediate data of operation data and / or diagnostic result data via the database backup server during operation monitoring and fault diagnosis;

[0024] The data distribution server is connected to the application server via the core switch, and the data distribution server pushes the operation data, the diagnostic intermediate data of the operation data and / or the diagnostic result data to the human-computer interaction module via the application server during the operation monitoring and fault diagnosis process.

[0025] Further, the database server at least includes a real-time server, a segmentation server, a periodic test database, a characteristic parameter database, a state information database and an expert knowledge base;

[0026] The real-time server is connected to the data distribution server to receive the original data of different functional devices through the data distribution server and store the original data using real-time storage technology;

[0027] The segmentation server is connected to the data distribution server to receive the original data sent by the real-time server through the data distribution server, and to store the original data after segmenting it according to the set segmentation technology;

[0028] The periodic test database is connected to the data distribution server to receive the diagnostic result data sent by the logic processing module through the data distribution server and to store the diagnostic result data periodically;

[0029] The characteristic parameter library, state information library and expert knowledge library are respectively connected to the data distribution server to receive the diagnostic intermediate data and / or diagnostic result data sent by the logic processing module through the data distribution server, and store the diagnostic intermediate data and / or diagnostic result data.

[0030] Further, the logic processing module is connected to the segmentation database, feature parameter library, state information library and expert knowledge library respectively;

[0031] The logic processing module is connected to the segmented database via a first application interface, and is used to receive the operation data segmented and stored in the segmented database during operation monitoring and fault diagnosis;

[0032] The logic processing module is connected to the characteristic parameter library via a second application interface, and is used to send the operation characteristic data to the special diagnosis parameter library during operation monitoring and fault diagnosis;

[0033] The logic processing module is connected to the state information library via a third application interface, and is used to send the operation state data to the state information library during operation monitoring and fault diagnosis;

[0034] The logic processing module is connected to the expert knowledge base via a fourth application interface, and is used to receive the experience knowledge data pre-stored in the expert knowledge base during operation monitoring and fault diagnosis.

[0035] Furthermore, the platform further comprises: a human-computer interaction module, the human-computer interaction module being connected to the data processing module and the logic processing module respectively, so as to display the diagnostic intermediate data and / or diagnostic result data of the operating data in the human-computer interaction interface through the human-computer interaction module;

[0036] Furthermore, the human-computer interaction module at least includes a data display unit and a periodic test operation unit;

[0037] The data display unit is used to display the diagnostic intermediate data and / or diagnostic result data of the operating data in the human-computer interaction interface through different pre-configured data display functions, and the data display unit includes at least one of the following data display functions: real-time signal waveform display function, characteristic parameter trend graph display function, equipment status display function, and parameter real-time display function;

[0038] The periodic test operation unit is used to display the diagnostic intermediate data and / or diagnostic result data of the operating data in the human-computer interaction interface through pre-configured different operation display functions. The periodic test operation unit includes at least one of the following operation display functions: a periodic test setting function, a periodic test result display function, a fault diagnosis algorithm result display function, and a characteristic parameter trend display function.

[0039] According to a second aspect of the present application, there is provided a method for operation monitoring and fault diagnosis of a control rod drive system, comprising:

[0040] Acquiring operation data associated with different functional devices in the control rod drive system, wherein the operation data is obtained by processing the original data of the different functional devices;

[0041] In the process of operation monitoring and fault diagnosis, the data flow technology is used to distribute the operation data acquired by the data acquisition module to different databases and / or different diagnostic platforms, and in the process of fault diagnosis, the diagnostic intermediate data of the operation data is controlled to flow between different databases and / or different diagnostic platforms;

[0042] The diagnostic algorithm interface is used to match the diagnostic logics of different diagnostic platforms, so as to perform fault diagnosis on the operating data and / or the diagnostic intermediate data of the operating data through the diagnostic logics of the different diagnostic platforms to obtain diagnostic result data.

[0043] According to a third aspect of the present application, a storage medium is provided, on which a computer program is stored, and when the program is executed by a processor, the operation monitoring and fault diagnosis method of the control rod drive system is implemented.

[0044] According to a fourth aspect of the present application, there is provided an operation monitoring and fault diagnosis device for a control rod drive system, comprising a storage medium, a processor, and a computer program stored on the storage medium and executable on the processor, wherein the processor implements the operation monitoring and fault diagnosis method for the control rod drive system when executing the program.

[0045] Through the above technical scheme, the present application provides an operation monitoring and fault diagnosis platform and a fault diagnosis method for a control rod drive system. Compared with the current operation monitoring and fault diagnosis methods of the control rod drive system, the present application designs an operation monitoring and fault diagnosis platform for the control rod drive system. The platform structure includes a control rod drive system, a data acquisition module, a data processing module, and a logic processing module. The operation data associated with different functional devices are acquired in real time through the combination of various functional modules to realize multi-channel, high-precision real-time acquisition and storage of massive data, and then the operation data is distributed to different databases and / or different diagnostic platforms to perform fault diagnosis on the operation data and / or the diagnostic intermediate data of the operation data through the diagnostic logic of the diagnostic platform. This process enables the control rod drive system to cover technical points more comprehensively during the operation monitoring and fault diagnosis process, greatly improving the safety of the operation and maintenance of the control rod drive system throughout its life cycle.

[0046] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0048] Figure 1 2 is a schematic diagram of the structure of an operation monitoring and fault diagnosis platform for a control rod drive system in an embodiment of the present application;

[0049] Figure 2 Schematic diagram of the hardware architecture of the operation monitoring and fault diagnosis platform of the control rod drive system in one embodiment of the present application;

[0050] Figure 3 Schematic diagram of the software architecture of the operation monitoring and fault diagnosis platform of the control rod drive system in one embodiment of the present application;

[0051] Figure 4 It is a schematic diagram of data classification and data flow during operation monitoring and fault diagnosis of a control rod drive system in one embodiment of the present application;

[0052] Figure 5 It is a schematic diagram of the interface matching relationship of the diagnostic algorithm of the control rod drive system in the process of operation monitoring and fault diagnosis in one embodiment of the present application;

[0053] Figure 6 is a flow chart of a method for operation monitoring and fault diagnosis of a control rod drive system in one embodiment of the present application;

[0054] Figure 7 It is a schematic diagram of the device structure of a computer device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0055] The present application will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0056] Related technologies for operation monitoring and fault diagnosis of control rod drive systems mainly include the following: current timing detection and action point analysis of control rod drive structure, rod position linearity analysis, rod drop time calculation, electrical performance monitoring of rod position detectors, electrical performance monitoring of control rod drive structure, performance change trend analysis of rod position detectors, performance change trend analysis of control rod drive structure, and equipment status monitoring of rod control rod position system. However, the technical points of operation monitoring and fault diagnosis of existing control rod drive systems cover a wide range, and it is difficult to fully achieve technical point coverage.

[0057] In order to solve this problem, this embodiment provides an operation monitoring and fault diagnosis platform for a control rod drive system. Figure 2 As shown, the platform includes: a control rod driving system 11, a data acquisition module 12, a data processing module 13, and a logic processing module 14;

[0058] The data acquisition module 12 is connected to the control rod drive system 11, and is used to obtain operation data associated with different functional devices in the control rod drive system, wherein the operation data is obtained by processing the original data of the different functional devices;

[0059] The data processing module 13 is connected to the data acquisition module 12, and is used to distribute the operation data acquired by the data acquisition module to different databases and / or different diagnostic platforms using data flow technology during operation monitoring and fault diagnosis, and to control the diagnosis intermediate data of the operation data to flow between different databases and / or different diagnostic platforms during fault diagnosis;

[0060] The logic processing module 14 is connected to the data processing module 13, and is used to use the diagnostic algorithm interface to match the diagnostic logic of different diagnostic platforms, so as to perform fault diagnosis on the operating data and / or the diagnostic intermediate data of the operating data through the diagnostic logic of the different diagnostic platforms to obtain diagnostic result data.

[0061] In this embodiment, different functional devices in the control rod drive system include a control rod drive mechanism, a rod position detector and a rod control rod position system. Specifically, in the process of operating monitoring and fault diagnosis of the control rod drive system, the control rod drive system is connected to the data acquisition module to realize the operating data associated with different functional devices. Here, the operating data is the original data of different functional devices obtained through data processing, and then the data acquisition module is connected to the data processing module to transfer the operating data associated with different functional devices to different diagnosis platforms. Finally, the logic processing module is connected to the data processing module, and the diagnostic logic of different diagnosis platforms is used to realize real-time online correlation analysis of the equipment status, timely discover and warn early faults, and use the expert system to infer the process to build a fault tree, and then give the fault diagnosis result. The whole process combines the operation monitoring data with the operation mechanism, and monitors the operation status of the drive mechanism throughout its life cycle in real time to judge its performance degradation trend.

[0062] Specifically, for the control rod drive mechanism, the current, voltage, and vibration sensors arranged on the rod control drive circuit are used to collect data to record the collected data in real time. Considering that the action of the control rod drive mechanism is controlled by the timing current loaded on its coil, the current can cause the magnetic circuit to change, and the magnetic circuit change produces the corresponding action of magnetic force drive, and sometimes the action will also feedback to the magnetic circuit and current. Here, by obtaining the connection between the action of the drive mechanism-magnetic circuit change-electrical parameter change during the operation of the rod control drive mechanism, the characteristic points reflected on the current of the rod control drive mechanism and the vibration signal generated during the operation of the rod control drive mechanism can be analyzed to realize the prejudgment of the operation state and operation performance degradation of the rod control drive mechanism. Here, the prejudgment mainly includes judging whether the characteristic points are obvious, whether they are ahead or behind on the time axis, whether the vibration amplitude meets the requirements, and whether there is a lead or lag on the time axis. For the rod control rod position system, the current and voltage sensors arranged on the rod position measurement channel are used to collect data to realize the real-time diagnosis and prediction capabilities of abnormal and fault conditions, so as to effectively identify and prevent equipment failures. For the rod control and rod position system, by collecting the operating status information of the rod control and rod position system, its electrical performance characteristic parameters are extracted to monitor and analyze the system operating status and performance in real time, so as to realize the operation monitoring and fault diagnosis of the rod control and rod position system. For the rod position detector, the induced voltage generated by the residual magnetism of the driving rod in the rod position detector coil when the control rod falls is collected in real time, and the rod falling time is calculated by establishing a relevant algorithm, and the given rod position and the measured rod position when the control rod is running are obtained to automatically analyze and calculate the rod position linearity.

[0063] As a specific implementation of the above embodiment, the data acquisition module includes a data acquisition chassis, a first acquisition server and a second acquisition server;

[0064] The data acquisition chassis is respectively connected to the control rod drive mechanism, the rod position detector and the rod control rod position system, and the data acquisition chassis is used to receive different types of signals output by the control rod drive system, so as to transmit the different types of signals to the first acquisition server or the second acquisition server according to the signal interface type;

[0065] The first acquisition server is connected to the data acquisition chassis, and the first acquisition server is used to receive the signal input by hard wiring in the data acquisition chassis according to the signal interface type during the signal receiving process;

[0066] The second acquisition server is connected to the data acquisition chassis, and the second acquisition server is used to receive a signal input by network communication in the data acquisition chassis according to a signal interface type.

[0067] As a specific implementation of the above embodiment, the data acquisition module further includes a signal conditioning unit, and the control rod drive mechanism is connected to the signal conditioning unit;

[0068] The signal conditioning unit is connected to the data acquisition chassis, and is used to receive the original signal output by the control rod drive mechanism, and to condition the original signal and transmit it to the data acquisition chassis;

[0069] The data acquisition chassis is connected to the rod control rod position system, and the data acquisition chassis is used to receive the current / voltage signal output by the rod control rod position device, so as to obtain a voltage signal matching the acquisition board after signal conditioning of the current / voltage signal;

[0070] The data acquisition box is connected to the rod position detector, and the data acquisition box is used to obtain the induced voltage of the change generated by the residual magnetism of the driving rod in the rod position detector coil when the control rod falls.

[0071] As a specific implementation of the above embodiment, the data acquisition module further includes a secondary switch;

[0072] The secondary switch is connected to the rod position and rod control system and the second acquisition server respectively, and the secondary switch is used to obtain the current / voltage signal output by the rod position device in the rod position and rod control system, so as to transmit the current / voltage signal to the second acquisition server through network communication;

[0073] The secondary switch is connected to the logic processing module and the second acquisition server respectively. The secondary switch is used to obtain the device status information of the stick control and stick position system through the logic processing module, so as to transmit the device status information to the second acquisition server through network communication.

[0074] As a specific implementation of the above embodiment, the data processing module includes a data distribution server, a database server and a core switch, and the data acquisition module is connected to the core switch;

[0075] The data distribution server is connected to the core switch, and the core switch is used to receive the operation data acquired by the data acquisition module, so that the data distribution server is connected to the database server, the database backup server and the application server through the core switch to realize data distribution;

[0076] The data distribution server is connected to the database server via the core switch, and the data distribution server stores operation data, diagnosis intermediate data of operation data and / or diagnosis result data via the database server during operation monitoring and fault diagnosis;

[0077] The data distribution server is connected to the database backup server via the core switch, and the data distribution server backs up and stores operation data, diagnostic intermediate data of operation data and / or diagnostic result data via the database backup server during operation monitoring and fault diagnosis;

[0078] The data distribution server is connected to the application server via the core switch, and the data distribution server pushes the operation data, the diagnostic intermediate data of the operation data and / or the diagnostic result data to the human-computer interaction module via the application server during the operation monitoring and fault diagnosis process.

[0079] As a specific implementation of the above embodiment, the database server at least includes a real-time server, a segmentation server, a periodic test database, a characteristic parameter database, a state information database and an expert knowledge base;

[0080] The real-time server is connected to the data distribution server to receive the original data of different functional devices through the data distribution server and store the original data using real-time storage technology;

[0081] The segmentation server is connected to the data distribution server to receive the original data sent by the real-time server through the data distribution server, and to store the original data after segmenting it according to the set segmentation technology;

[0082] The periodic test database is connected to the data distribution server to receive the diagnostic result data sent by the logic processing module through the data distribution server and to store the diagnostic result data periodically;

[0083] The characteristic parameter library, state information library and expert knowledge library are respectively connected to the data distribution server to receive the diagnostic intermediate data and / or diagnostic result data sent by the logic processing module through the data distribution server, and store the diagnostic intermediate data and / or diagnostic result data.

[0084] As a specific implementation of the above embodiment, the logic processing module is connected to the segmentation database, feature parameter library, state information library and expert knowledge library respectively;

[0085] The logic processing module is connected to the segmented database via a first application interface, and is used to receive the operation data segmented and stored in the segmented database during operation monitoring and fault diagnosis;

[0086] The logic processing module is connected to the characteristic parameter library via a second application interface, and is used to send the operation characteristic data to the special diagnosis parameter library during operation monitoring and fault diagnosis;

[0087] The logic processing module is connected to the state information library via a third application interface, and is used to send the operation state data to the state information library during operation monitoring and fault diagnosis;

[0088] The logic processing module is connected to the expert knowledge base via a fourth application interface, and is used to receive the experience knowledge data pre-stored in the expert knowledge base during operation monitoring and fault diagnosis.

[0089] As a specific implementation of the above embodiment, the platform also includes: a human-computer interaction module, which is connected to the data processing module and the logic processing module respectively, so that the diagnostic intermediate data and / or diagnostic result data of the operating data can be displayed in the human-computer interaction interface through the human-computer interaction module.

[0090] As a specific implementation of the above embodiment, the human-computer interaction module at least includes a data display unit and a periodic test operation unit;

[0091] The data display unit is used to display the diagnostic intermediate data and / or diagnostic result data of the operating data in the human-computer interaction interface through different pre-configured data display functions, and the data display unit includes at least one of the following data display functions: real-time signal waveform display function, characteristic parameter trend graph display function, equipment status display function, and parameter real-time display function;

[0092] The periodic test operation unit is used to display the diagnostic intermediate data and / or diagnostic result data of the operating data in the human-computer interaction interface through pre-configured different operation display functions. The periodic test operation unit includes at least one of the following operation display functions: a periodic test setting function, a periodic test result display function, a fault diagnosis algorithm result display function, and a characteristic parameter trend display function.

[0093] Furthermore, as Figure 1 The hardware architecture of the operation monitoring and fault diagnosis platform of the control rod drive system is as follows: Figure 2 As shown in the figure, the hardware architecture consists of two core mechanisms, namely the local data acquisition cabinet and the remote data processing cabinet; the local data acquisition cabinet is mainly composed of two acquisition servers (the first acquisition server and the second acquisition server), a data acquisition chassis, a vibration signal conditioning module and a secondary switch, which forms an interface with the control rod drive system to collect the hard wiring and network signals required by the logic processing module through the interface. The main signal types collected by the data acquisition chassis and their acquisition methods are as follows:

[0094] The vibration signal is generated by the vibration sensor installed on the control rod drive mechanism. The signal is transmitted to the vibration signal conditioning module of the local data acquisition cabinet through hard wiring, and is sent to the data acquisition chassis after conditioning and amplification. The first acquisition server directly drives the acquisition board to obtain the signal through the remote controller.

[0095] The voltage and current signals of the control rod drive mechanism coil are obtained through the voltage transmitter module and the current transmitter module on the rod control device. After the voltage / current transmitter module obtains the original voltage / current signal from the voltage / current sensor, it converts the signal into a voltage signal that matches the acquisition board interface in the data acquisition chassis in the local data acquisition cabinet after signal conditioning.

[0096] The primary induction signal is the induced voltage generated by the residual magnetism of the driving rod in the rod position detector coil when the control rod falls. It is obtained through the voltage transmitter module configured in the rod position equipment and transmitted to the data acquisition chassis by hard wiring.

[0097] The voltage and current signals of the detector coil are obtained by the voltage / current sensor of the rod position measurement module in the rod position equipment, and the rod position measurement module transmits the original signals to the second acquisition server in the on-site data acquisition cabinet through network communication.

[0098] The equipment status, rod position and other information of the rod control and rod position system are automatically collected through the PLC in the logic processing device and transmitted to the second collection server in the local data collection cabinet through network communication.

[0099] The above-mentioned remote data processing cabinet is mainly composed of a data distribution server, a database server, a database backup server, an application server and a core switch to realize the functions of data processing, storage and display.

[0100] It is understandable that when the above-mentioned on-site data acquisition cabinet obtains data through network communication, it takes into account the network security between different systems and adopts optical fiber for one-way transmission, that is, the optical fiber connection control rod system driving system side is only connected to TX, and the diagnostic platform side is only connected to RX, and the communication protocol selects UDP communication.

[0101] In actual application scenarios, the control rod drive system operation monitoring and fault diagnosis platform can use a core switch (10 Gigabit, three-layer switch) to cluster the servers involved in the platform. In this way, when a single server fails, the application on the server will be switched to other servers for execution, so as to achieve high reliability of the system and support long-term stable online operation of the platform.

[0102] Furthermore, as Figure 1 The software architecture of the operation monitoring and fault diagnosis platform of the control rod drive system is as follows: Figure 3As shown, the entire software architecture is mainly divided into four layers, including signal acquisition layer, data management layer, logic processing layer and human-computer interaction layer;

[0103] The data acquisition module in the above-mentioned signal acquisition layer obtains the original data such as vibration signal, coil voltage and current signal of control rod drive mechanism, primary side induction signal, detector coil voltage and current signal, rod control rod position system equipment status and rod position information according to different signal acquisition methods, and then transmits the collected original data to the data sorting module, which performs sampling frequency adjustment, time calibration, label classification and data segmentation based on pattern recognition, and finally distributes the segmented / sorted data using data distribution technology.

[0104] It is understandable that the data acquisition layer, as an important component of the software architecture, is mainly used to store and manage data. In this embodiment, the operation monitoring and fault diagnosis platform of the control rod drive system needs to process six types of data, and the processing of these data is mainly achieved through the data management layer. Figure 4 The data classification and data flow of the control rod drive system during operation monitoring and fault diagnosis are provided, such as Figure 4 As shown, the data flow of each database mainly includes the following steps: first, the data management layer receives the real-time data distributed by the signal acquisition layer, and saves it to the real-time database through real-time storage technology (recognition-based down-frequency storage); then the original data is segmented according to the set segmentation frequency and segmentation label, and the segmented data is stored in the segmentation database through the cache technology. The data in the segmentation database is sent to the logic processing layer in the form of data frames through the interface program for fault diagnosis, and then the diagnostic intermediate data and diagnostic result data obtained by the logic processing layer are stored in the feature parameter library, status information library and expert knowledge base of the data management layer respectively. If the data in the real-time database is diagnosed as fault or warning data, it will be stored in the historical fault database. During the fault diagnosis process, the operator performs platform periodic test algorithm diagnosis through the periodic test interface, and the diagnostic result data is stored in the periodic test database.

[0105] Furthermore, the above data management layer will also manage all databases, including log management, permission management, query management and transaction management. Log management is mainly responsible for recording the operations performed by operators on the database; permission management is responsible for opening and restricting the permissions of operators to a certain extent; query management is responsible for whether operators perform precise or fuzzy queries on data, as well as queries within the range of data; transaction management is responsible for recovering transactions for data lost due to failures, ensuring the integrity and consistency of key data.

[0106] In the segmentation database, the above-mentioned data management layer segments the original data according to the set segmentation frequency and segmentation label. The segmentation method adopts pattern recognition-based segmentation, that is, the platform automatically processes and judges the collected data according to the "one-step stick" mode, and when the "one-step stick" is recognized, the corresponding data is taken out for use.

[0107] In the real-time database, the data management layer receives the real-time data distributed by the signal acquisition layer and saves it to the real-time database through real-time storage technology. The real-time storage here involves frequency reduction storage technology based on pattern recognition, that is, the platform automatically processes and judges the collected data according to the "dynamic stick" mode. Dynamic stick data is directly stored as key data, and non-dynamic stick data is stored at a reduced frequency (the sampling rate is reduced, that is, some sampled data is discarded). This technology will greatly reduce the amount of data stored by the platform every day and save storage space.

[0108] The above logic processing layer is mainly responsible for algorithmic diagnosis of operation data and intermediate diagnostic data. On the one hand, the diagnosed data is directly stored in the corresponding database through the database interface; on the other hand, the diagnosed data is distributed to other subprograms or subsystems for corresponding processing through data distribution. At this time, the platform backend can select the corresponding data content to call the interface of the corresponding diagnostic algorithm for fault diagnosis.

[0109] The diagnostic algorithm interface matching here matches different backend API interfaces through different processing logics, and uses the interface read / write data mode to obtain corresponding data to implement the diagnostic algorithm function. This method further separates the platform from the intelligent diagnostic algorithm, and the two are independently developed and maintained, which facilitates the upgrade of the diagnostic algorithm.

[0110] It should be noted that, considering the different processing logics of the diagnostic algorithms, the diagnostic algorithm interface matching matches different backend API interfaces through different processing logics, and uses the interface read / write data mode to obtain corresponding data to implement the diagnostic algorithm function. Figure 5 The interface matching relationship of the control rod drive system in the process of operation monitoring and fault diagnosis is provided, such as Figure 5 As shown, on the one hand, the diagnostic algorithm is connected to the segmentation database and the expert knowledge base through interfaces respectively, so as to transmit the data to be diagnosed and the expert experience to the logic processing layer, so as to use the expert experience data to perform fault diagnosis on the data to be diagnosed through the diagnostic algorithm; on the other hand, the diagnostic algorithm is connected to the feature parameter library and the state information library through interfaces respectively, so as to transmit the diagnostic intermediate data and / or diagnostic result data obtained by diagnosis to the feature parameter library and the state information library respectively.

[0111] The above-mentioned human-machine interaction layer is the interface for the operator to interact with the application program, and the human-machine interaction interface mainly includes a data display unit, a periodic test operation unit, and other functional units. Among them, the data display unit includes the signal waveform real-time display function, the characteristic parameter trend graph display function, the equipment status display function, the parameter real-time display function, etc.; the periodic test operation unit includes the periodic test setting, periodic test result display, fault diagnosis algorithm result display, and characteristic parameter trend display functions; other functional units include report generation and printing, alarm threshold modification, user authority management, etc.

[0112] Furthermore, in order to ensure the security of the platform, the above modules and corresponding functions are set with corresponding functional permissions according to their importance.

[0113] Furthermore, in order to facilitate the interaction between the human-computer interface and the back-end system, the alarm threshold can be modified and the platform can periodically test the algorithm function according to the operator's authority and operations.

[0114] Furthermore, to ensure the security and availability of the platform, the platform is configured with user authority management to divide the resources that users need to access according to different security levels, business scopes, and authority granularity, so that users can only access data that they are authorized to access. In the implementation process, a group of users with the same access rights are set to a certain role / position, and then resources are assigned to roles / positions to implement role-based authority management. When receiving user request information, the platform performs authority verification and responds to user requests according to the corresponding authority definition. The platform should be able to control operation permissions and data permissions according to different scenarios, such as the platform's function menus, button controls on each interface, etc. to manipulate operation permissions.

[0115] Further, as Figure 1-Figure 5 The specific implementation of the operation monitoring and fault diagnosis platform of the control rod drive system, the embodiment of the present application provides an operation monitoring and fault diagnosis method of the control rod drive system, such as Figure 6 As shown, the method includes:

[0116] 201. Obtain operating data associated with different functional devices in a control rod drive system, where the operating data is obtained by processing original data of the different functional devices.

[0117] 202. During operation monitoring and fault diagnosis, data flow technology is used to distribute the operation data acquired by the data acquisition module to different databases and / or different diagnostic platforms, and during fault diagnosis, the diagnostic intermediate data of the operation data is controlled to flow between different databases and / or different diagnostic platforms.

[0118] 203. Use the diagnostic algorithm interface to match the diagnostic logics of different diagnostic platforms, so as to perform fault diagnosis on the operating data and / or the diagnostic intermediate data of the operating data through the diagnostic logics of the different diagnostic platforms to obtain diagnostic result data.

[0119] Based on the above Figure 6 The method shown in the embodiment of the present application accordingly provides a storage medium on which a computer program is stored, and when the program is executed by a processor, the above-mentioned Figure 6 The operation monitoring and fault diagnosis method of the control rod drive system shown.

[0120] Based on this understanding, the technical solution of the present application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.), and includes a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each implementation scenario of the present application.

[0121] Based on the above Figure 6 The method shown, and Figure 1-5 In order to achieve the above-mentioned purpose, the embodiment of the present application also provides a physical device for operation monitoring and fault diagnosis of a control rod drive system, which can be a computer, a smart phone, a tablet computer, a smart watch, a server, or a network device, etc. The physical device includes a storage medium and a processor; the storage medium is used to store a computer program; the processor is used to execute the computer program to achieve the above-mentioned Figure 6 The operation monitoring and fault diagnosis method of the control rod drive system shown.

[0122] Optionally, the physical device may also include a user interface, a network interface, a camera, a radio frequency (RF) circuit, a sensor, an audio circuit, a WI-FI module, etc. The user interface may include a display, an input unit such as a keyboard, etc., and the optional user interface may also include a USB interface, a card reader interface, etc. The network interface may optionally include a standard wired interface, a wireless interface (such as a WI-FI interface), etc.

[0123] In an exemplary embodiment, see Figure 7 The physical device includes a communication bus, a processor, a memory and a communication interface, and may also include an input / output interface and a display device, wherein each functional unit can communicate with each other through the bus. The memory stores a computer program, and the processor is used to execute the program stored in the memory and execute the operation monitoring and fault diagnosis method of the control rod drive system in the above embodiment.

[0124] Those skilled in the art will appreciate that the physical device structure for operation monitoring and fault diagnosis of a control rod drive system provided in this embodiment does not constitute a limitation on the physical device, and may include more or fewer components, or a combination of certain components, or different arrangements of components.

[0125] The storage medium may also include an operating system and a network communication module. The operating system is a program that manages the hardware and software resources of the physical device for operation monitoring and fault diagnosis of the control rod drive system, and supports the operation of the information processing program and other software and / or programs. The network communication module is used to realize communication between the components inside the storage medium, and communication with other hardware and software in the information processing physical device.

[0126] Through the description of the above implementation methods, the technical personnel in this field can clearly understand that the present application can be implemented by means of software plus the necessary general hardware platform, or by hardware. By applying the technical solution of the present application, compared with the current existing methods, the present application obtains the operation data associated with different functional devices in real time by combining various functional modules, so as to realize multi-channel, high-precision real-time acquisition and storage of massive data, and then distributes the operation data to different databases and / or different diagnostic platforms, so as to perform fault diagnosis on the operation data and / or the diagnostic intermediate data of the operation data through the diagnostic logic of the diagnostic platform. This process enables the control rod drive system to cover the technical points more comprehensively during the operation monitoring and fault diagnosis process, greatly improving the safety of the operation and maintenance of the control rod drive system during the whole life cycle.

[0127] Those skilled in the art will appreciate that the accompanying drawings are only schematic diagrams of a preferred implementation scenario, and the modules or processes in the accompanying drawings are not necessarily necessary for implementing the present application. Those skilled in the art will appreciate that the modules in the devices in the implementation scenario can be distributed in the devices of the implementation scenario according to the description of the implementation scenario, or can be changed accordingly and located in one or more devices different from the present implementation scenario. The modules of the above-mentioned implementation scenario can be combined into one module, or can be further split into multiple submodules.

[0128] The above serial numbers of this application are only for description and do not represent the advantages and disadvantages of the implementation scenarios. The above disclosure is only a few specific implementation scenarios of this application, but this application is not limited to them, and any changes that can be thought of by technicians in this field should fall within the scope of protection of this application.

Claims

1. An operation monitoring and fault diagnosis platform for a control rod drive system, characterized in that: include: Control rod drive system, data acquisition module, data processing module, logic processing module; The data acquisition module is connected to the control rod drive system, and is used to obtain operation data associated with different functional devices in the control rod drive system, wherein the operation data is obtained by processing the original data of the different functional devices; The data processing module is connected to the data acquisition module, and the data processing module is used to distribute the operation data acquired by the data acquisition module to different databases and / or different diagnostic platforms using data flow technology during operation monitoring and fault diagnosis, and to control the diagnosis intermediate data of the operation data to flow between different databases and / or different diagnostic platforms during fault diagnosis; The logic processing module is connected to the data processing module, and the logic processing module is used to use the diagnostic algorithm interface to match the diagnostic logic of different diagnostic platforms, so as to perform fault diagnosis on the operating data and / or the diagnostic intermediate data of the operating data through the diagnostic logic of the different diagnostic platforms to obtain diagnostic result data.

2. The operation monitoring and fault diagnosis platform of the control rod drive system according to claim 1, characterized in that: The control rod drive system includes a control rod drive mechanism, a rod position detector and a rod control rod position system, and the data acquisition module includes a data acquisition chassis, a first acquisition server and a second acquisition server; The data acquisition chassis is respectively connected to the control rod drive mechanism, the rod position detector and the rod control rod position system, and the data acquisition chassis is used to receive different types of signals output by the control rod drive system, so as to transmit the different types of signals to the first acquisition server or the second acquisition server according to the signal interface type; The first acquisition server is connected to the data acquisition chassis, and the first acquisition server is used to receive the signal input by hard wiring in the data acquisition chassis according to the signal interface type during the signal receiving process; The second acquisition server is connected to the data acquisition chassis, and the second acquisition server is used to receive a signal input by network communication in the data acquisition chassis according to a signal interface type.

3. The operation monitoring and fault diagnosis platform of the control rod drive system according to claim 2, characterized in that: The data acquisition module further comprises a signal conditioning unit, and the control rod driving mechanism is connected to the signal conditioning unit; The signal conditioning unit is connected to the data acquisition chassis, and is used to receive the original signal output by the control rod drive mechanism, and to condition the original signal and transmit it to the data acquisition chassis; The data acquisition chassis is connected to the rod control rod position system, and the data acquisition chassis is used to receive the current / voltage signal output by the rod control rod position device, so as to obtain a voltage signal matching the acquisition board after signal conditioning of the current / voltage signal; The data acquisition box is connected to the rod position detector, and the data acquisition box is used to obtain the induced voltage of the change generated by the residual magnetism of the driving rod in the rod position detector coil when the control rod falls.

4. The operation monitoring and fault diagnosis platform of the control rod drive system according to claim 2 or 3, characterized in that: The data acquisition module also includes a secondary switch; The secondary switch is connected to the rod position and rod control system and the second acquisition server respectively, and the secondary switch is used to obtain the current / voltage signal output by the rod position device in the rod position and rod control system, so as to transmit the current / voltage signal to the second acquisition server through network communication; The secondary switch is connected to the logic processing module and the second acquisition server respectively. The secondary switch is used to obtain the device status information of the stick control and stick position system through the logic processing module, so as to transmit the device status information to the second acquisition server through network communication.

5. The operation monitoring and fault diagnosis platform of the control rod drive system according to claim 1, characterized in that: The data processing module includes a data distribution server, a database server and a core switch, and the data acquisition module is connected to the core switch; The data distribution server is connected to the core switch, and the core switch is used to receive the operation data acquired by the data acquisition module, so that the data distribution server is connected to the database server, the database backup server and the application server through the core switch to realize data distribution; The data distribution server is connected to the database server via the core switch, and the data distribution server stores operation data, diagnosis intermediate data of operation data and / or diagnosis result data via the database server during operation monitoring and fault diagnosis; The data distribution server is connected to the database backup server via the core switch, and the data distribution server backs up and stores operation data, diagnostic intermediate data of operation data and / or diagnostic result data via the database backup server during operation monitoring and fault diagnosis; The data distribution server is connected to the application server via the core switch, and the data distribution server pushes the operation data, the diagnosis intermediate data of the operation data and / or the diagnosis result data to the human-computer interaction module via the application server during the operation monitoring and fault diagnosis process.

6. The operation monitoring and fault diagnosis platform of the control rod drive system according to claim 5, characterized in that: The database server at least includes a real-time server, a segmentation server, a periodic test database, a characteristic parameter database, a state information database and an expert knowledge base; The real-time server is connected to the data distribution server to receive the original data of different functional devices through the data distribution server and store the original data using real-time storage technology; The segmentation server is connected to the data distribution server to receive the original data sent by the real-time server through the data distribution server, and to store the original data after segmenting it according to the set segmentation technology; The periodic test database is connected to the data distribution server to receive the diagnostic result data sent by the logic processing module through the data distribution server and to store the diagnostic result data periodically; The characteristic parameter library, state information library and expert knowledge library are respectively connected to the data distribution server to receive the diagnostic intermediate data and / or diagnostic result data sent by the logic processing module through the data distribution server, and store the diagnostic intermediate data and / or diagnostic result data.

7. The operation monitoring and fault diagnosis platform of the control rod drive system according to claim 6, characterized in that: The logic processing module is respectively connected to the segmentation database, feature parameter library, state information library and expert knowledge library; The logic processing module is connected to the segmented database via a first application interface, and is used to receive the operation data segmented and stored in the segmented database during operation monitoring and fault diagnosis; The logic processing module is connected to the characteristic parameter library via a second application interface, and is used to send the operation characteristic data to the special diagnosis parameter library during operation monitoring and fault diagnosis; The logic processing module is connected to the state information library via a third application interface, and is used to send the operation state data to the state information library during operation monitoring and fault diagnosis; The logic processing module is connected to the expert knowledge base via a fourth application interface, and is used to receive the experience knowledge data pre-stored in the expert knowledge base during operation monitoring and fault diagnosis.

8. The operation monitoring and fault diagnosis platform of the control rod drive system according to claim 1, characterized in that: The platform also includes: a human-computer interaction module, which is connected to the data processing module and the logic processing module respectively, so that the diagnostic intermediate data and / or diagnostic result data of the operating data can be displayed in the human-computer interaction interface through the human-computer interaction module.

9. The operation monitoring and fault diagnosis platform of the control rod drive system according to claim 8, characterized in that: The human-computer interaction module at least includes a data display unit and a periodic test operation unit; The data display unit is used to display the diagnostic intermediate data and / or diagnostic result data of the operating data in the human-computer interaction interface through different pre-configured data display functions, and the data display unit includes at least one of the following data display functions: real-time signal waveform display function, characteristic parameter trend graph display function, equipment status display function, and parameter real-time display function; The periodic test operation unit is used to display the diagnostic intermediate data and / or diagnostic result data of the operating data in the human-computer interaction interface through pre-configured different operation display functions. The periodic test operation unit includes at least one of the following operation display functions: a periodic test setting function, a periodic test result display function, a fault diagnosis algorithm result display function, and a characteristic parameter trend display function.

10. A method for operation monitoring and fault diagnosis of a control rod drive system, characterized in that: include: Acquiring operation data associated with different functional devices in the control rod drive system, wherein the operation data is obtained by processing the original data of the different functional devices; In the process of operation monitoring and fault diagnosis, the data flow technology is used to distribute the operation data acquired by the data acquisition module to different databases and / or different diagnostic platforms, and in the process of fault diagnosis, the diagnostic intermediate data of the operation data is controlled to flow between different databases and / or different diagnostic platforms; The diagnostic algorithm interface is used to match the diagnostic logics of different diagnostic platforms, so as to perform fault diagnosis on the operating data and / or the diagnostic intermediate data of the operating data through the diagnostic logics of the different diagnostic platforms to obtain diagnostic result data.

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