Nuclear power plant modeling and intelligent operation and maintenance platform based on three-dimensional visualization and use method

Abstract

The invention discloses a nuclear power plant modeling and intelligent operation and maintenance platform based on three-dimensional visualization and a use method. The nuclear power plant modeling and intelligent operation and maintenance platform comprises a data acquisition module, a data processing module, a three-dimensional modeling module, a virtual inspection module, a document management module, a fault response module and an engineering integrated database. The data acquisition module acquires real-time data and transmits the real-time data to the data processing module for structured processing, the data processing module outputs data to support the three-dimensional modeling module to generate a dynamic model, and the three-dimensional modeling module provides the dynamic model for the virtual inspection module, the document management module and the fault response module to perform interactive operation. The engineering integrated database coordinates data updating and storage of all the modules, the modules cooperate together to form an organic whole, and real-time monitoring, virtual inspection and intelligent operation and maintenance of the nuclear power plant equipment state are achieved. According to the invention, the state and operation information of the equipment can be displayed more intuitively and accurately, and the timeliness of decision making and the safety of operation are improved.

Description

Technical Field

[0001] The present invention belongs to the field of industrial automation and safety information systems (SIS), and specifically relates to a nuclear power plant modeling and intelligent operation and maintenance platform based on three-dimensional visualization and a use method thereof. Background Art

[0002] Nuclear power plants are complex, large-scale industrial systems whose operation involves the coordinated operation of multiple devices, pipelines, and control systems. To ensure the safe and stable operation of nuclear power plants, real-time monitoring, maintenance, and management of equipment operating status are essential. Currently, most nuclear power plants utilize plant-level monitoring and information systems (SISs) that rely primarily on two-dimensional drawings, manual inspections, and text reports for equipment monitoring and management. However, these traditional methods present numerous challenges, including limited intuitive information transmission, low inspection efficiency, delayed fault response, and poor data integration capabilities. These issues not only increase operator workload but can also result in equipment failures not being detected and addressed promptly due to information lags, thus impacting the operational efficiency and safety of nuclear power plants.

[0003] With the development of industrial information technology, 3D visualization, digital twin, and big data analysis technologies have been widely applied in the industrial sector, demonstrating significant potential in equipment management, operation and maintenance, and fault prediction. 3D visualization technology uses intuitive 3D models to display the real-time operating status of equipment, enabling operators to quickly understand its operation and make decisions. Digital twin technology, through the real-time integration of multi-source data, constructs equipment models in a virtual environment, enabling real-time monitoring and predictive maintenance. The combination of these technologies offers new solutions to challenges in nuclear power plant equipment management.

[0004] Current safety information systems (SIS) rely primarily on text, tables, and two-dimensional charts to convey information. While this meets basic needs in routine operations, it falls short when dealing with complex or emergency situations, as shown in the following points: 1) Information communication is not intuitive: Traditional SIS systems rely on large amounts of data and text information. Operators need to spend a long time reading, understanding, and analyzing the data. Especially in the face of emergency situations, they are easily unable to make accurate decisions quickly due to information overload, which in turn delays response time.

[0005] 2) Low efficiency of equipment inspection and positioning: Traditional equipment inspection and troubleshooting processes usually rely on manpower, especially in areas involving radioactive risks such as nuclear power plants. Manual inspections are not only time-consuming, but also have potential risks such as inaccurate positioning and inadequate inspections, affecting equipment safety and operational efficiency.

[0006] 3) Delayed Document Updates and Management: Traditional document management systems are often independent of equipment management systems. Users often have to go through multiple steps to find equipment-related documents, hindering timely decision-making. Furthermore, document updates and distribution can be delayed, preventing field operators from obtaining the latest equipment information, which in turn affects operational accuracy.

[0007] 4) Isolation operations are prone to errors: In traditional systems, the operation of isolation equipment or systems often relies on manual judgment and operation, which is prone to operational errors or omissions. This manual intervention is not only time-consuming but also poses potential safety risks, especially in complex operation scenarios. Summary of the Invention

[0008] This invention aims to provide a nuclear power plant modeling and intelligent operation and maintenance platform based on 3D visualization, and its use method. This platform aims to address existing safety information systems (SIS) issues such as unintuitive information communication, inefficient equipment inspections, lagging document management, and error-prone isolation operations. By incorporating 3D visualization technology, this invention can more intuitively and accurately display equipment status and operating information, improving the timeliness of decision-making and operational safety, reducing manpower input, and improving overall system efficiency. This significantly enhances safety and operational efficiency, particularly in high-risk scenarios such as nuclear power plants.

[0009] In order to achieve the above object, the present invention adopts the following technical solutions: The nuclear power plant modeling and intelligent operation and maintenance platform based on 3D visualization includes: The data acquisition module collects the equipment operation data of the nuclear power plant's on-site sensors through the distributed control system and transmits the data to the data processing module through one-way transmission; The data processing module is used to clean and format the collected data and match the processed data with the design drawing information of the nuclear power plant; 3D modeling module, used to analyze the design drawings of nuclear power plants, extract the geometric information of equipment, pipelines, and building objects, and generate corresponding 3D geometric models; The virtual inspection module supports users to conduct remote inspections of equipment on a 3D visualization platform. Users can view the equipment's operating status in real time in a virtual environment and perform equipment fault detection and response. The document management module, integrated with the 3D geometric model, allows users to view equipment-related operating manuals, maintenance records, and safety regulations by clicking on the equipment model, and automatically synchronizes documents when they are updated; The fault response module works in conjunction with the 3D modeling module, the engineering integration database, the virtual inspection module, and the document management module to issue alarms and generate fault isolation recommendations; The engineering integrated database interacts with the three-dimensional geometric model in real time through a bidirectional data stream. The engineering integrated database stores the geometric information, operating status, and maintenance records of the equipment, supports the recording of dynamic changes in the equipment status over time, and writes back and updates data through the three-dimensional geometric model.

[0010] A further improvement of the present invention is that the platform also includes a one-way network switch to achieve network isolation between the industrial control area and the management area, thereby ensuring the unidirectionality of data transmission and preventing external interference with the industrial control area.

[0011] A further improvement of the present invention is that the data processing module is used to clean and format the collected data, including data deduplication, outlier detection and correction.

[0012] A further improvement of the present invention is that the platform is also integrated with the ERP system, SCADA system and BIM system of the nuclear power plant through a RESTful API interface to achieve data interaction and sharing with other platforms.

[0013] A further improvement of the present invention is that the platform also supports functional expansion and can predict potential equipment failures in advance based on the equipment's operating data and failure history by integrating predictive maintenance algorithms, thereby improving the intelligent management level of nuclear power plants.

[0014] A further improvement of the present invention is that the data processing module is also connected to the plant-level monitoring information system to realize data integration, processing and three-dimensional visual display.

[0015] A further improvement of the present invention is that the data processing module cleans and formats the collected data, including data deduplication, outlier detection and correction.

[0016] A further improvement of the present invention is that the three-dimensional geometric model is updated in real time through time series data to reflect the real-time status of the device.

[0017] A further improvement of the present invention is that the fault response module locates the faulty equipment based on the three-dimensional geometric model provided by the three-dimensional modeling module, performs fault detection in combination with the real-time operation data of the engineering integration database, issues an alarm when a equipment fault is detected, generates fault isolation suggestions, and guides operators to perform isolation operations; after isolation is completed, the fault information is recorded in the three-dimensional geometric model and updated and stored through the engineering integration database; during the fault handling process, the fault response module can trigger the virtual inspection module to verify the fault status, and consult relevant maintenance documents through the document management module to support operational decisions.

[0018] Methods for using the nuclear power plant modeling and intelligent operation and maintenance platform based on 3D visualization include: The data acquisition module acquires real-time data and transmits it to the data processing module for structured processing. The data processing module outputs data to support the three-dimensional modeling module to generate dynamic models. The three-dimensional modeling module provides dynamic models for interactive operations of the virtual inspection module, document management module and fault response module. The engineering integration database coordinates the data update and storage of each module, and they work together to form an organic whole to realize real-time monitoring of the equipment status of nuclear power plants, virtual inspections and intelligent operation and maintenance.

[0019] Compared with the prior art, the present invention has at least the following beneficial technical effects: The 3D visualization-based nuclear power plant modeling and intelligent operation and maintenance platform and its usage method aim to improve the operational efficiency and safety of nuclear power plants by integrating multi-source data, building 3D geometric models, and implementing intelligent operation and maintenance and fault management. The system integrates nuclear power plant design drawings, equipment operating data, and maintenance records to generate a high-precision 3D digital model, enabling real-time monitoring of equipment status, virtual inspections, fault warnings, and intelligent maintenance.

[0020] This invention uses field sensor data collected by a distributed control system (DCS) and transmits this data to the plant-level Supervisory Information System (SIS) via a one-way transmission method. To ensure data transmission security and the independence of the industrial control area, a one-way gateway is installed between the industrial control area and the management area to ensure unidirectional data flow and prevent external interference. Furthermore, the system parses and annotates nuclear power plant design drawings, converting 2D geometric information into 3D models. Using a 3D modeling engine, it generates 3D digital models of equipment, buildings, and pipelines. This model can be dynamically updated based on time-series data, ensuring that it always reflects the real-time status of the equipment.

[0021] Compared to existing technologies, this invention achieves remote equipment monitoring and inspection through a virtual inspection function. Users can view equipment status in real time in a 3D virtual environment without having to enter on-site operation, greatly improving inspection efficiency and safety. When a device anomaly occurs, the system automatically issues an alarm and provides detailed fault information and historical equipment operation data. Operators can use this information to quickly locate the problem and generate isolation recommendations to prevent the impact of the fault from expanding. In addition, this invention supports real-time management of equipment-related documents. Users can click on the device through the 3D geometric model to view maintenance records, operating manuals, etc., ensuring that operational information and equipment status are updated synchronously.

[0022] There is a two-way data flow between the engineering integration database of the present invention and the three-dimensional geometric model, which realizes the dynamic interaction between data and model. The database provides basic data for the generation of three-dimensional geometric models, and changes in the three-dimensional geometric models will also be synchronously written back to the database to ensure a high degree of consistency between data and models. At the same time, the system is seamlessly integrated with the nuclear power plant's ERP system, SCADA system and BIM system through the RESTful API interface, supporting real-time data sharing and interoperability between platforms. The system adopts a modular design and supports functional expansion. Users can introduce predictive maintenance algorithms according to their needs to predict potential equipment failures in advance, further improving the intelligent management level of nuclear power plants.

[0023] Compared to traditional 2D data display and manual inspection methods, the 3D visualization platform and intelligent operation and maintenance system of this invention offers higher accuracy, automation, and security. Through real-time data acquisition, 3D geometric model display, intelligent inspection, and document management, the system can significantly improve the operation and maintenance efficiency of nuclear power plants and provide strong support for the full lifecycle management of equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 Build a flowchart for the hardware of the present invention; Figure 2 This is a logic function flow chart of the present invention. DETAILED DESCRIPTION

[0026] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are to be considered as illustrative in nature and not restrictive.

[0027] In the description of the present invention, it is to be understood that when used in this specification and the appended claims, the terms “include” and “comprise” indicate the presence of the described features, wholes, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or collections thereof.

[0028] It should also be understood that the terms used in the present specification are only for the purpose of describing particular embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

[0029] It should be further understood that the term "and / or" used in the present description and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0030] The accompanying drawings illustrate various schematic diagrams of structures according to embodiments disclosed herein. These figures are not drawn to scale; for clarity, some details are exaggerated and some details may be omitted. The shapes of the various regions and layers shown in the figures, as well as their relative sizes and positional relationships, are merely exemplary and may deviate in practice due to manufacturing tolerances or technical limitations. Those skilled in the art may design regions / layers with different shapes, sizes, and relative positions as needed.

[0031] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0032] Example 1 The nuclear power plant modeling and intelligent operation and maintenance platform based on 3D visualization provided by the present invention involves multiple modules, such as Figure 1 and Figure 2 As shown, the system covers all stages, from design drawing annotation, data collection and cleaning, structured data generation, establishment and management of an integrated engineering database, 3D model generation, and client visualization. Through the orderly coordination of various modules, the system realizes data management, 3D modeling, and intelligent operation and maintenance throughout the life cycle of a nuclear power plant. Its specific implementation is as follows: First, nuclear power plant design drawings are typically stored in PDF format, containing complex equipment layouts, building structures, and piping information. The system uses a file parsing module to parse PDF drawings and extract basic geometric information. Next, users use the system's built-in annotation tools to annotate key objects in the drawings, such as equipment, piping, and buildings. The annotation tool utilizes an interactive graphical interface, allowing users to precisely locate equipment and its connections, and add attribute information (such as equipment size, material, and number) to each annotated object through a parameter input interface. Once annotation is complete, the data file is saved in the Scalable Vector Graphics (SVG) format, a high-resolution and structured format that fully preserves the equipment's geometric information and attribute data. Generating SVG files forms the basis for subsequent data processing and 3D modeling.

[0033] Furthermore, after the annotation is completed, the system processes the SVG file through the geometric information parsing module. First, the system reconstructs the topological structure based on the annotated geometric shape and generates the connection relationship between the equipment, pipelines and building structures. Then, the system calls the geometric conversion algorithm to convert the two-dimensional geometric information in the SVG into geometric data in three-dimensional space, including position coordinates, geometric shapes and physical properties. This conversion process involves Boolean operations and spatial geometric mapping in geometric modeling technology to ensure that the generated three-dimensional data has high accuracy and consistency. Subsequently, the annotated geometric data and attribute information will generate structured data tables according to different dimensions such as equipment, pipelines, and buildings. These data tables contain the geometric parameters, attribute information and connection relationships of each object in the overall system.

[0034] Furthermore, if Figure 1 As shown in the figure, the system's data acquisition and transmission module is responsible for acquiring equipment operating data collected by field sensors from the distributed control system (DCS). This data includes production parameters such as temperature, pressure, and vibration. This data is transmitted unidirectionally to the plant-level supervisory information system (SIS) for integration. After data processing, the SIS transmits the data to the 3D visualization system for subsequent visualization and monitoring. The security protection module uses a unidirectional network gateway to isolate the industrial control area from the management area, preventing interference from the management area and ensuring unidirectional data flow.

[0035] Furthermore, the system integrates multidimensional engineering data from multiple sources, covering equipment operating status, construction progress, and maintenance records. Through standardized data acquisition interfaces, the system accesses this data from the SCADA system, ERP system, and the nuclear power plant's equipment management system. All collected data is cleaned by a data processing module, which includes data deduplication, outlier detection and correction, and format standardization. This cleaned data is then correlated and matched with geometric data extracted from design drawings, ensuring that all engineering information is accurately linked to the corresponding equipment or building structure.

[0036] Furthermore, the system uses a data integration module to combine the cleaned engineering data with geometric data extracted from design drawings to generate a structured dataset. Based on a modeling approach based on database normalization theory, the system generates multiple tables, including equipment information, piping connections, and building structure tables. Each record in each table contains detailed geometric parameters, equipment status information, and corresponding engineering attributes. All structured data is interconnected through an entity-relationship model (ER model), forming an integrated engineering data system.

[0037] The system then stores the consolidated structured data in an integrated engineering database. This database utilizes a distributed database management system (DDBMS) architecture to ensure high data availability and consistency. The database is organized into logical hierarchies, such as devices, subsystems, and systems, supporting queries and integrated analysis at both the device and system levels. The database not only stores geometric data and attribute information, but also device lifecycle data, such as maintenance history and fault records. Using time-series database management (TSDB) technology, the database supports dynamic recording of device status changes, ensuring that subsequent 3D models can be updated in real time based on changes in device status.

[0038] Regarding 3D model generation, the system uses a 3D modeling engine to automatically generate a 3D digital model of the nuclear power plant based on geometric information and equipment attribute data in the integrated engineering database. This engine utilizes multi-resolution modeling algorithms and adaptive mesh generation technology to generate a 3D model that displays the spatial layout of equipment, building structures, and pipeline routing. The system also updates the 3D model in real time based on time-series data in the database, ensuring it always reflects the latest status of the nuclear power plant. The generated 3D model is displayed through a 3D visualization engine, allowing users to interact with the model through the client, such as rotating, zooming, and panning, to view detailed equipment information.

[0039] Preferably, if Figure 2 As shown, the system's 3D visualization platform monitors equipment status in real time and displays its operational status using color coding (green indicates normal, yellow indicates warning, and red indicates fault). When equipment status is abnormal, the system issues an alert, prompting the user to view detailed equipment information. Once the alert is triggered, the system automatically initiates a virtual inspection, allowing users to remotely view equipment status and conduct a virtual inspection via the 3D visualization platform. Virtual inspections support 360-degree virtual tours, allowing users to remotely check equipment status without on-site operation.

[0040] Furthermore, in the event of a device failure, the document management module allows users to access relevant documentation, including operating manuals, maintenance records, and safety procedures, by clicking on the device through the 3D model. When the system detects document updates, the document management module automatically synchronizes and prompts the user to view the latest version, ensuring operators have the latest device information. If the document is not automatically updated, the system prompts the user to manually update it.

[0041] Preferably, if Figure 2As shown in the figure, when the system detects a device failure, users can quickly locate the faulty device by entering the device ID, and the system will automatically navigate to the device's specific location. The system then generates isolation recommendations and guides users to isolate the faulty device to prevent the fault from spreading to other functioning devices. Once the isolation operation is complete, the system marks the isolated area in the 3D model and records the operation log for subsequent reference.

[0042] Furthermore, the system seamlessly integrates with nuclear power plant business systems, including ERP, SCADA, and BIM, through RESTful APIs. These interfaces utilize OAuth 2.0 authentication to ensure data security and consistency. The system's modular design supports functional expansion, such as the integration of predictive maintenance algorithms that can predict potential failures based on equipment operating status and fault history, further improving nuclear power plant operational efficiency.

[0043] Example 2 The method for using the nuclear power plant modeling and intelligent operation and maintenance platform based on three-dimensional visualization provided by the present invention includes: The data acquisition module acquires real-time data and transmits it to the data processing module for structured processing. The data processing module outputs data to support the three-dimensional modeling module to generate dynamic models. The three-dimensional modeling module provides dynamic models for interactive operations of the virtual inspection module, document management module and fault response module. The engineering integration database coordinates the data update and storage of each module, and they work together to form an organic whole to realize real-time monitoring of the equipment status of nuclear power plants, virtual inspections and intelligent operation and maintenance.

[0044] In summary, the present invention breaks the dependence on external digital delivery by autonomously generating high-precision three-dimensional models, and realizes multi-dimensional data integration and visual management of the entire life cycle of nuclear power plants. The system can dynamically update data and three-dimensional models in real time to ensure the consistency of data and models, and provides managers with intuitive decision-making support through multi-dimensional display of equipment status, construction progress and cost analysis. At the same time, the integrated intelligent operation and maintenance function improves the operation and maintenance efficiency of nuclear power plants, reduces the incidence of equipment failures, and ensures the safe and stable operation of nuclear power plants. The system has high scalability and openness, can be seamlessly integrated with existing management systems, supports future functional upgrades and expansions, and provides strong support for the continuous intelligent development of nuclear power plants.

[0045] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, from all points of view, the embodiments should be regarded as illustrative and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and range of equivalents of the claims are included in the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0046] In addition, it should be understood that although this specification describes the embodiments, not every embodiment contains only one independent technical solution. This description is for clarity only. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art. The above content is only for the purpose of illustrating the technical concept of the present invention and cannot be used to limit the scope of protection of the present invention. Any changes made based on the technical solution in accordance with the technical concept proposed by the present invention fall within the scope of protection of the claims of the present invention.

Claims

1. A nuclear power plant modeling and intelligent operation and maintenance platform based on 3D visualization, characterized by: include: The data acquisition module collects the equipment operation data of the nuclear power plant's on-site sensors through the distributed control system and transmits the data to the data processing module through one-way transmission; The data processing module is used to clean and format the collected data and match the processed data with the design drawing information of the nuclear power plant; 3D modeling module, used to analyze the design drawings of nuclear power plants, extract the geometric information of equipment, pipelines, and building objects, and generate corresponding 3D geometric models; The virtual inspection module supports users to conduct remote inspections of equipment on a 3D visualization platform. Users can view the equipment's operating status in real time in a virtual environment and perform equipment fault detection and response. The document management module, integrated with the 3D geometric model, allows users to view equipment-related operating manuals, maintenance records, and safety regulations by clicking on the equipment model, and automatically synchronizes documents when they are updated; The fault response module works in conjunction with the 3D modeling module, the engineering integration database, the virtual inspection module, and the document management module to issue alarms and generate fault isolation recommendations; The engineering integrated database interacts with the three-dimensional geometric model in real time through a bidirectional data stream. The engineering integrated database stores the geometric information, operating status, and maintenance records of the equipment, supports the recording of dynamic changes in the equipment status over time, and writes back and updates data through the three-dimensional geometric model.

2. The nuclear power plant modeling and intelligent operation and maintenance platform based on three-dimensional visualization according to claim 1 is characterized in that: The platform also includes a one-way network firewall to achieve network isolation between the industrial control area and the management area, ensuring the unidirectionality of data transmission and preventing external interference in the industrial control area.

3. The nuclear power plant modeling and intelligent operation and maintenance platform based on three-dimensional visualization according to claim 1 is characterized in that: The data processing module is used to clean and format the collected data, including data deduplication, outlier detection and correction.

4. The nuclear power plant modeling and intelligent operation and maintenance platform based on three-dimensional visualization according to claim 1 is characterized in that: The platform is also integrated with the nuclear power plant's ERP system, SCADA system and BIM system through a RESTful API interface to enable data interaction and sharing with other platforms.

5. The nuclear power plant modeling and intelligent operation and maintenance platform based on three-dimensional visualization according to claim 1 is characterized in that: The platform also supports functional expansion and can integrate predictive maintenance algorithms to predict potential equipment failures in advance based on the equipment's operating data and failure history, thereby improving the intelligent management level of nuclear power plants.

6. The nuclear power plant modeling and intelligent operation and maintenance platform based on three-dimensional visualization according to claim 1 is characterized in that: The data processing module is also connected to the plant-level monitoring information system to achieve data integration, processing and three-dimensional visualization.

7. The nuclear power plant modeling and intelligent operation and maintenance platform based on three-dimensional visualization according to claim 1 is characterized in that: The data processing module cleans and formats the collected data, including data deduplication, outlier detection and correction.

8. The nuclear power plant modeling and intelligent operation and maintenance platform based on three-dimensional visualization according to claim 1 is characterized in that: The three-dimensional geometric model is updated in real time through time series data to reflect the real-time status of the device.

9. The nuclear power plant modeling and intelligent operation and maintenance platform based on three-dimensional visualization according to claim 1 is characterized in that: The fault response module locates the faulty equipment based on the 3D geometric model provided by the 3D modeling module, performs fault detection in combination with the real-time operation data of the engineering integration database, issues an alarm when a equipment fault is detected, generates fault isolation suggestions, and guides operators to perform isolation operations; After isolation is completed, the fault information is recorded in the 3D geometric model and updated and stored through the engineering integrated database; During the fault handling process, the fault response module can trigger the virtual inspection module to verify the fault status and consult relevant maintenance documents through the document management module to support operational decisions.

10. The method for using the nuclear power plant modeling and intelligent operation and maintenance platform based on three-dimensional visualization according to any one of claims 1 to 9, characterized in that: include: The data acquisition module acquires real-time data and transmits it to the data processing module for structured processing. The data processing module outputs data to support the three-dimensional modeling module to generate dynamic models. The three-dimensional modeling module provides dynamic models for interactive operations of the virtual inspection module, document management module and fault response module. The engineering integration database coordinates the data update and storage of each module, and they work together to form an organic whole to realize real-time monitoring of the equipment status of nuclear power plants, virtual inspections and intelligent operation and maintenance.

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