A method and system for remote optimization control of substations based on digital twins

Abstract

A method and system for remote optimization control of substations based on digital twins are disclosed. The method includes: establishing a substation digital twin platform based on the substation's digital design model file; constructing a visualized 3D model for the substation digital twin platform based on the substation's 3D spatial model file; establishing data interaction and communication between the substation's monitoring system, online monitoring system, and intelligent inspection system; and, based on the interaction data from these systems, remote optimization control applications on the substation digital twin platform, combined with the visualized 3D model, performing remote optimization control of the substation's field equipment. This invention reduces substation maintenance costs, shortens downtime, and improves system operation and maintenance safety.

Description

Technical Field

[0001] This invention relates to the field of digital remote operation and maintenance of substations, and in particular to a remote optimization control method and system for substations based on digital twins. Background Technology

[0002] With the expansion of the power grid and the improvement of its intelligence level, a large number of smart substations have been put into operation, increasing the skill requirements for operation and maintenance personnel. This has led to an increase in the number of times maintenance personnel need to travel to and from substations, resulting in increased maintenance costs. Furthermore, fault information can only be disseminated through the dispatch and monitoring platform, resulting in relatively slow processing speeds for on-site faults and defects. Based on these realities, digital twins, from the perspective of equipment managers and based on an equipment-oriented approach, achieve cross-departmental and cross-professional integration under information technology conditions. Digital twins reconstruct the top-level design of substation monitoring, including roles such as operators, maintenance personnel, and managers; and time-based information including historical, current, and planned information. With the comprehensive advancement of power grid resource integration and the gradual realization of interconnectivity among physical equipment, automation systems, and information systems, digital twin technology has begun to meet the full application requirements. The goal of digital twin technology is to integrate "physical substations" and "digital substations," using digital technology to perceive, understand, and optimize real-world substations, and to closely combine infrastructure with digital construction. Currently, the research and engineering application scenarios of digital twins mainly focus on visualizing the operating status of equipment based on the acquisition of primary equipment operating status data in substations. They do not address aspects such as on-site device testing, circuit acceptance, and condition-based maintenance, thus failing to provide auxiliary support for on-site work. Therefore, existing technologies have not truly achieved the purpose of remote operation and maintenance, troubleshooting, and fault handling. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a digital twin-based remote optimization control method and system for substations, thereby solving the technical problems of remote operation and maintenance of substations.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution.

[0005] This invention first discloses a remote optimization control method for substations based on digital twins, which includes the following steps:

[0006] Step 1: Establish a digital twin platform for the substation based on the digital design model file of the substation, and construct a visualized 3D model for the digital twin platform of the substation based on the 3D spatial model file of the substation.

[0007] Step 2: Establish data communication and interaction between the substation's monitoring system, online monitoring system, and intelligent inspection system;

[0008] Step 3: Based on the interaction data of the substation monitoring system, online monitoring system and intelligent inspection system, the substation remote optimization control application of the substation digital twin platform, combined with the visualized 3D model, performs remote optimization control of the substation field equipment.

[0009] The present invention further includes the following preferred embodiments:

[0010] In step 1, the three-dimensional spatial model file of the substation is constructed through the following process:

[0011] Step 1.1: Integrate multi-source data information such as laser point cloud of substation equipment, oblique photography, construction drawings, equipment structural drawings and equipment images, and combine them with the BIM 3D model applied in the engineering construction phase to construct a digitally accurate coordinate 3D scene, generate a virtual scene that is restored to the actual substation at a 1:1 scale, and establish a 3D static model covering all primary and secondary equipment in the station, including the geometric model of the equipment, logical topological relationships and spatial location transformation attribute file information;

[0012] Step 1.2: Based on the digital twin platform, define the interface attribute information of the three-dimensional model of the substation's primary and secondary equipment, status lights, terminal blocks, and hard pressure plates. By standardizing the naming rules of the three-dimensional model and configuring the associated information table, correspond to the attributes in the background database to generate a unique identifier mapping relationship between the three-dimensional spatial model and the substation SCD model file.

[0013] Step 1.3: Establish a unique association between the 3D camera, robot model, and corresponding objects in the intelligent inspection system, and view the real-time status of the site by clicking on the 3D model.

[0014] Step 2, establishing data interaction and communication between the substation monitoring system, online monitoring system, and intelligent inspection system, further includes:

[0015] Step 2.1: Use the communication method based on the IEC104 standard protocol to access the four remote data of the substation main and auxiliary monitoring system in substation zone III, and output the operation command for confirming the execution of the remote optimization control task back to the main and auxiliary monitoring system;

[0016] Step 2.2: Obtain the information, data, images and real-time video streams of the entire equipment inspection results of the substation intelligent inspection system in Substation III area based on the HTTP protocol communication method. View the inspection task results and the corresponding real-time video of the camera in the digital twin platform, and control the inspection status of the inspection camera and robot in reverse on the digital twin platform, and issue inspection tasks to the intelligent inspection system.

[0017] Step 2.3: Based on the communication method of E-file transmission through the forward and reverse isolation device, obtain the results information and data of the real-time operation and maintenance diagnosis and analysis of the substation equipment status from the substation online monitoring system, including the evaluation and prediction documents and inspection reports of primary and secondary equipment, and use the online monitoring system for diagnostic analysis.

[0018] The remote optimization control application of the substation digital twin platform, combined with the visualized 3D model, for remote optimization control of substation field equipment further includes:

[0019] Step 3.1: The digital twin platform server monitors in real time the optimized control message file generated based on the multi-source data analysis results pushed by the integrated application host. The optimized control message file contains the optimized control type, analysis basis, control device location, and operation type.

[0020] Step 3.2: The digital twin platform server pushes the key fields of the optimized control file to the front-end webpage for display. The substation remote optimization control application is the highest-authority functional module of the platform application. After receiving the optimization control message, the front-end immediately executes the front-end display instruction to visualize the optimization control content in combination with the 3D model.

[0021] Step 3.3: Select one of three processing methods based on the optimized control content: confirmation operation, temporary cancellation, and complete cancellation. Confirmation operation involves issuing a confirmation command to the control equipment points in the optimized control content. The control command is sent to the main and auxiliary monitoring systems via the reverse control function of the IEC104 protocol communication. The execution completion status can be viewed through the application's task list. Temporary cancellation suspends the optimized control task, which is viewed and operated through the application's task list and is in an unprocessed state. Complete cancellation means the user confirms that they will not process the optimized control task and directly deletes it; the task is viewed through the application's task list and is in a cancelled state.

[0022] Step 3.4: Obtain the task analysis basis contained in the optimization control task content and display it in the form of a list on the application front end. Each analysis basis can be located in three-dimensional space and viewed in video through shortcut buttons to assist users in analyzing and judging whether to execute the optimization control task on the digital twin platform.

[0023] Step 3.5: After the optimization control task confirmation operation is completed, the main and auxiliary monitoring systems will return the execution results to the digital twin platform server. The returned results include: not executed, successfully issued, canceled, successfully executed, execution timed out, execution failed, or service error. After processing the returned results, the server will display different statuses in the front-end task list and determine the processing operations that can be performed based on the current status, and display the subsequent operation buttons.

[0024] In step 3.3, the step of sending control commands to the main and auxiliary monitoring systems further includes:

[0025] Based on operational security and access permissions, a secure operational edge carrier is deployed at the station. A dual-channel constraint mechanism for management and operation is adopted. Based on work order application, identity authentication, and encrypted transmission mechanisms, the reverse output of remote optimization control and remote control operations of substations based on digital twin technology is realized.

[0026] This invention also discloses a digital twin-based remote optimization control system for substations, utilizing the aforementioned digital twin-based remote optimization control method. The system includes a substation digital twin platform establishment module, a data interaction and communication establishment module, and a field equipment remote optimization control module.

[0027] The substation digital twin platform establishment module is used to establish a substation digital twin platform based on the substation digital design model file, and to construct a visualized 3D model for the substation digital twin platform based on the substation 3D spatial model file.

[0028] The data interaction communication establishment module is used to establish data interaction communication between the substation monitoring system, online monitoring system and intelligent inspection system.

[0029] The remote optimization control module for field equipment is used to remotely optimize and control the field equipment of the substation based on the interaction data of the monitoring system, online monitoring system and intelligent inspection system in the substation, using the substation remote optimization control application of the substation digital twin platform in conjunction with the visualized 3D model.

[0030] Accordingly, this application also discloses a terminal, including a processor and a storage medium;

[0031] The storage medium is used to store instructions;

[0032] The processor is configured to operate according to the instructions to execute the steps of the aforementioned digital twin-based substation remote optimization control method.

[0033] Accordingly, this application also discloses a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of the aforementioned digital twin-based substation remote optimization control method.

[0034] The beneficial effects of this invention are as follows: Compared with the prior art, this invention provides a method and system for remote optimization control of substations based on digital twins. The substation digital twin platform is built based on the digital design model file of the substation, constructing a digital twin model with monitoring, alarm, and business support functions, realizing unified management of substation equipment models, and solving the problems of inconsistent information and asynchronous business functions among multiple systems within the substation. It establishes a data communication method based on edge gateways to interact with multiple systems such as station monitoring, online monitoring, and intelligent inspection, realizing multi-source heterogeneous data acquisition, data storage, video, and application services across the entire substation, expanding the scope of intelligent perception of substation equipment, enriching the types of information analyzed, and displaying the panoramic, all-time status of equipment through 3D display and video linkage. Based on risk prediction results and anomaly handling suggestions, and under the premise of fully considering operation and maintenance safety and operating permissions, it issues proactive optimization control instructions to the Zone III auxiliary monitoring system, enabling the twin model and the physical model to form a rational bidirectional feedback, performing proactive remote optimization control, reducing substation maintenance costs, shortening downtime, improving system operation and maintenance safety, and reducing power grid risks. Attached Figure Description

[0035] Figure 1 This is a flowchart of the substation remote optimization control method based on digital twins in this invention.

[0036] Figure 2 This is an architecture diagram of the digital twin-based remote optimization control method for substations in this invention.

[0037] Figure 3 This is an application flowchart of the functional modules of the substation remote optimization control method based on digital twin in a preferred embodiment of the present invention.

[0038] Figure 4 This is a schematic diagram of the structure of the digital twin-based remote optimization control system for substations in this invention. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0040] The embodiments described in this application are merely some, not all, embodiments of the present invention. Based on the spirit of the present invention, other embodiments obtained by those skilled in the art without inventive effort are all within the protection scope of the present invention.

[0041] This invention proposes a method and system for remote optimization control of substations based on digital twins. A digital twin platform is developed based on the substation's digital design model file, establishing a digital twin model with monitoring, alarm, and business support functions. A data communication method based on an edge gateway is established to interact with multiple systems such as substation monitoring, online monitoring, and intelligent inspection, enabling multi-source heterogeneous data acquisition, data storage, video, and application services across the entire substation. Based on this, advanced applications of remote optimization control are realized through 3D visualization. Real-time operation and maintenance diagnosis and analysis of abnormal signals from core equipment within the substation are performed, and spatial anomaly location is achieved using the twin model. Combined with video inspection footage, the overall, real-time, and spatial status of the equipment is displayed. Based on risk prediction results and anomaly handling suggestions, and under the premise of fully considering operation and maintenance safety and operational permissions, proactive optimization control commands are issued to the Zone III auxiliary monitoring system. This allows the twin model and the physical model to form a rationalized two-way feedback, enabling proactive remote optimization control to reduce substation maintenance costs, shorten downtime, improve system operation and maintenance safety, and reduce power grid risks.

[0042] See Figure 1 As shown, this invention discloses a remote optimization control method for substations based on digital twins, comprising the following steps:

[0043] Step 1: Establish a digital twin platform for the substation based on the digital design model file of the substation, and construct a visualized 3D model for the digital twin platform of the substation based on the 3D spatial model file of the substation.

[0044] The substation digital design model file is used to support the substation digital twin platform in establishing twin models of primary and secondary equipment. The substation digital twin platform provides a backend database supporting the model and data, data interaction services supporting frontend applications, frontend functional modules supporting upper-layer applications, and enables remote optimization and control applications for the substation.

[0045] The substation digital twin platform adopts a Java EE distributed microservice architecture platform, based on a classic technology combination (Spring Boot, Spring Cloud & Alibaba, Vue, Element). The platform's front-end is developed using the Vue CLI scaffolding, and the front-end rendering framework uses Vue.js, employing an MVVM design. It utilizes development technologies such as HTML, JavaScript, CSS, and NodeJS, supporting routing management and centralized state management. Using a microservice framework, the platform's various applications and services are fully decoupled, supporting backend data simulation, data forwarding, and preprocessing of frontend and backend configuration files.

[0046] In a preferred embodiment, the three-dimensional spatial model file of the substation is constructed through the following process:

[0047] Step 1.1: 3D spatial model construction. Integrating multi-source data information such as laser point clouds of substation equipment, oblique photography, construction drawings, equipment structural drawings and equipment images, and combining the BIM (Building Information Modeling) 3D model applied in the engineering construction phase, a digitally accurate coordinate 3D scene is constructed to generate a virtual scene that is a 1:1 replica of the actual substation. A 3D static model covering all primary and secondary equipment in the station is established, including rich information such as the geometric model of the equipment, logical topological relationships, and spatial location transformation attribute files.

[0048] Step 1.2: Based on the digital twin platform, define the interface attribute information of the three-dimensional model of the substation's primary and secondary equipment, as well as equipment components such as status lights, terminal blocks, and hard pressure plates. By standardizing the naming rules of the three-dimensional model and configuring the association information table, correspond to the attributes in the background database to generate a unique identifier mapping relationship between the three-dimensional spatial model and the substation SCD (Substation Configuration Description) model file.

[0049] Step 1.3: The 3D spatial model contains patrol resource models such as patrol cameras and robots. A unique association is established between the 3D camera and robot models and the corresponding objects of the intelligent patrol system. By clicking on the 3D model, the real-time status of the site can be viewed via video.

[0050] Step 2: Establish data communication and interaction between the substation's monitoring system, online monitoring system, and intelligent inspection system.

[0051] The data interaction and communication with the substation's monitoring system, online monitoring system, and intelligent inspection system are used to provide the digital twin platform with real-time data, alarm information, real-time on-site inspection videos, and other multi-source heterogeneous data and real-time diagnostic analysis results from all substation equipment, as well as interactive communication for optimized control, required for the substation's remote optimization control applications. The substation digital twin platform is deployed in Substation Zone III and transmitted to the substation management office for remote management via a comprehensive dedicated data network channel strategy.

[0052] In a preferred embodiment, step 2, establishing data interaction communication between the substation monitoring system, online monitoring system, and intelligent inspection system, further includes:

[0053] Step 2.1: Use the communication method based on the IEC104 standard protocol to access the four remote data of the substation main and auxiliary monitoring system in substation zone III, and output the operation command for confirming the execution of the remote optimization control task back to the main and auxiliary monitoring system;

[0054] Step 2.2: Obtain information, data, images, and real-time video streams of the entire equipment inspection results of the substation intelligent inspection system in Substation III using the HTTP protocol communication method. View the inspection task results and the corresponding real-time video of the camera in the digital twin platform. Control the inspection status of the inspection camera and robot in reverse on the digital twin platform and issue inspection tasks to the intelligent inspection system.

[0055] Step 2.3: Based on the communication method of E-file transmission through the forward and reverse isolation device, obtain the results information and data of the real-time operation and maintenance diagnosis and analysis of the substation equipment status from the substation online monitoring system, including the evaluation and prediction documents and inspection reports of primary and secondary equipment. Using the online monitoring system for diagnosis and analysis can make full use of the functions of the on-site online monitoring system and make the diagnosis results more accurate.

[0056] Step 3: Based on the interaction data of the substation monitoring system, online monitoring system and intelligent inspection system, the substation remote optimization control application of the substation digital twin platform, combined with the visualized 3D model, performs remote optimization control of the substation field equipment.

[0057] In a specific embodiment, the remote optimization control application of the substation digital twin platform is used to remotely optimize and control the substation field equipment. The main steps are as follows:

[0058] Step 3.1: The digital twin platform server monitors in real time the optimized control message file generated based on the multi-source data analysis results pushed by the integrated application host. The optimized control message file contains the optimized control type, analysis basis, control device location, and operation type.

[0059] Step 3.2: The digital twin platform server pushes the key fields of the optimized control file to the front-end webpage for display. The substation remote optimization control application is the highest-level functional module of the platform application. Regardless of which functional application module of the digital twin platform the user is currently using, after receiving the optimization control message, the front-end immediately executes the front-end display instruction to visualize the optimization control content in conjunction with the 3D model.

[0060] Step 3.3: After reviewing the optimized control content, there are three processing methods: confirmation operation, temporary cancellation, and complete cancellation. Confirmation operation involves issuing a confirmation command for the control equipment points in the optimized control content. The control command is sent to the main and auxiliary monitoring systems via the reverse control function of the IEC104 protocol communication. The execution completion status can be viewed through the application's task list. Temporary cancellation suspends the current optimized control task, which is viewed and operated through the application's task list and is in an unprocessed state. Complete cancellation means the user confirms that they will not process the current optimized control task and directly deletes it; the task is viewed through the application's task list and is in a canceled state.

[0061] Step 3.4: The optimization control task content includes task analysis basis, which is displayed in a list form on the application front end. Each analysis basis can be located in three-dimensional space and viewed via a shortcut button, assisting users in analyzing and judging whether to execute the optimization control task on the digital twin platform.

[0062] Step 3.5: After the optimization control task confirmation operation is completed, the primary and secondary monitoring systems will return the execution results to the digital twin platform server. The returned results include: not executed, successfully issued, canceled, successfully executed, execution timed out, execution failed, and service error. After processing the returned results, the server displays different statuses in the front-end task list and determines the available processing operations based on the current status, displaying the buttons for subsequent operations.

[0063] In a preferred embodiment, step 3.3, which involves sending control commands to the primary and secondary monitoring systems, further includes:

[0064] Taking full account of operation and maintenance security and operational permissions, a secure operation and maintenance edge carrier is deployed at the station. A dual-channel constraint mechanism for management and operation and maintenance is adopted. Based on strict work order application, identity authentication, encrypted transmission and other mechanisms, the security and reliability of remote operation of substations are guaranteed. This enables the reverse output of remote optimization control of substations based on digital twin technology, which is "from virtual to real" remote control operation.

[0065] The remote optimization control application of the substation uses a 3D scene to display the real-time status of the substation operation, real-time alarms, diagnostic alarms, 3D spatial positioning, inspection results, and videos to comprehensively view the on-site operation and maintenance of the substation. It performs multi-dimensional information confirmation and comprehensive analysis on the received remote optimization control tasks, and deploys miniature high-definition cameras in the secondary protection cabinets to acquire video and identify whether the terminal block cables inside the cabinets are damaged, on fire, or have small animals. The intelligent inspection system adds inspection of the appearance and environment of the substation's secondary equipment and sends the inspection results to the substation's digital twin platform to improve the accuracy of judging whether there are defects in the status of the substation's secondary equipment.

[0066] Figure 2 The remote optimized control process, taking the emergency control of open circuit risk in substation current loop as an example, mainly includes the following steps:

[0067] Step A1: The monitoring system outputs a CT disconnection alarm signal from the protection device;

[0068] Step A2: The online detection system is linked with the intelligent operation and maintenance system to identify whether there is smoke or fire through cameras near the equipment CT, and at the same time, the cameras are used to identify the situation of people in the vicinity.

[0069] Step A3: Initiate the judgment logic to perform comprehensive judgment and analysis. When the open circuit of the current loop poses a significant personal safety risk to the operation and maintenance personnel, the remote control request will be sent to the substation digital twin platform in the form of an E file through the forward isolation device.

[0070] Step A4: The digital twin platform reconfirms the on-site operation status via video to determine whether remote control is necessary;

[0071] Step A5: When confirming remote control operations, verify the operation and maintenance security and login account operation permissions. After approval, issue an emergency cut-off control command for the corresponding primary equipment to the main and auxiliary monitoring system in Zone III to ensure the personal safety of operation and maintenance personnel.

[0072] The beneficial effects of this invention are as follows: Compared with the prior art, this invention provides a method and system for remote optimization control of substations based on digital twins. The substation digital twin platform is built based on the digital design model file of the substation, constructing a digital twin model with monitoring, alarm, and business support functions, realizing unified management of substation equipment models, and solving the problems of inconsistent information and asynchronous business functions among multiple systems within the substation. It establishes a data communication method based on edge gateways to interact with multiple systems such as station monitoring, online monitoring, and intelligent inspection, realizing multi-source heterogeneous data acquisition, data storage, video, and application services across the entire substation, expanding the scope of intelligent perception of substation equipment, enriching the types of information analyzed, and displaying the panoramic, all-time status of equipment through 3D display and video linkage. Based on risk prediction results and anomaly handling suggestions, and under the premise of fully considering operation and maintenance safety and operating permissions, it issues proactive optimization control instructions to the Zone III auxiliary monitoring system, enabling the twin model and the physical model to form a rational bidirectional feedback, performing proactive remote optimization control, reducing substation maintenance costs, shortening downtime, improving system operation and maintenance safety, and reducing power grid risks.

[0073] This invention can be a system, method, and / or computer program product. See also Figure 4The present invention also discloses a digital twin-based remote optimization control system for substations based on the aforementioned digital twin-based remote optimization control method, including a substation digital twin platform establishment module 1, a data interaction and communication establishment module 2, and a field equipment remote optimization control module 3.

[0074] The substation digital twin platform establishment module 1 is used to establish a substation digital twin platform based on the substation digital design model file, and to construct a visualized 3D model for the substation digital twin platform based on the substation 3D spatial model file.

[0075] The data interaction communication establishment module 2 is used to establish data interaction communication between the substation monitoring system, online monitoring system and intelligent inspection system.

[0076] The remote optimization control module 3 for field equipment is used to remotely optimize and control the field equipment of the substation based on the interaction data of the monitoring system, online monitoring system and intelligent inspection system in the substation, and in conjunction with the visualized 3D model of the substation digital twin platform.

[0077] Based on the spirit of this invention, those skilled in the art will readily conceive of a computer program product derived from the aforementioned digital twin-based remote optimization control method for substations. The computer program product may include a computer-readable storage medium on which computer-readable program instructions are loaded to enable a processor to implement various aspects of this disclosure. Specifically, this application also includes a terminal comprising a processor and a storage medium; the storage medium is used to store instructions; the processor is used to operate according to the instructions to execute the steps of the aforementioned digital twin-based remote optimization control method for substations.

[0078] Computer-readable storage media can be tangible devices capable of holding and storing instructions for use by an instruction execution device. Computer-readable storage media can be, for example, but not limited to, electrical storage devices, magnetic storage devices, optical storage devices, electromagnetic storage devices, semiconductor storage devices, or any suitable combination of the foregoing. More specific examples (a non-exhaustive list) of computer-readable storage media include: portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), static random access memory (SRAM), portable compact disc read-only memory (CD-ROM), digital multifunction disc (DVD), memory sticks, floppy disks, mechanical encoding devices, such as punch cards or recessed protrusions storing instructions thereon, and any suitable combination of the foregoing. The computer-readable storage media used herein are not to be construed as transient signals themselves, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagating through waveguides or other transmission media (e.g., light pulses through fiber optic cables), or electrical signals transmitted through wires.

[0079] The computer-readable program instructions described herein can be downloaded from computer-readable storage media to various computing / processing devices, or downloaded via a network, such as the Internet, local area network, wide area network, and / or wireless network, to an external computer or external storage device. The network may include copper transmission cables, fiber optic transmission, wireless transmission, routers, firewalls, switches, gateway computers, and / or edge servers. A network adapter card or network interface in each computing / processing device receives the computer-readable program instructions from the network and forwards them to the computer-readable storage media in the respective computing / processing device.

[0080] Computer program instructions used to perform the operations of this disclosure may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, status setting data, or source code or object code written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Smalltalk, C++, etc., and conventional procedural programming languages ​​such as the "C" language or similar programming languages. The computer-readable program instructions may execute entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving a remote computer, the remote computer may be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or may be connected to an external computer (e.g., via the Internet using an Internet service provider). In some embodiments, electronic circuitry, such as programmable logic circuitry, field-programmable gate arrays (FPGAs), or programmable logic arrays (PLAs), is personalized by utilizing the status information of the computer-readable program instructions to implement various aspects of this disclosure.

[0081] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the protection scope of the claims of the present invention.

Claims

1. A remote optimization control method for substations based on digital twins, characterized in that, Includes the following steps: Step 1: Establish a digital twin platform for the substation based on the digital design model file of the substation, and construct a visualized 3D model for the digital twin platform of the substation based on the 3D spatial model file of the substation. Step 2: Establish data communication and interaction between the substation's monitoring system, online monitoring system, and intelligent inspection system; Step 3: Based on the interaction data of the substation monitoring system, online monitoring system and intelligent inspection system, the substation remote optimization control application of the substation digital twin platform, combined with the visualized 3D model, performs remote optimization control of the substation field equipment. The remote optimization control application of the substation remote optimization control comprehensively views the on-site operation and maintenance of the substation by displaying the real-time status of the substation operation, real-time alarms, diagnostic alarms, three-dimensional spatial positioning, inspection results and videos in a three-dimensional scene. It performs multi-dimensional information confirmation and comprehensive analysis on the received remote optimization control tasks, and deploys miniature high-definition cameras in the secondary protection cabinet to acquire videos and identify whether the terminal block cables inside the cabinet are damaged, on fire, or have small animals. The intelligent inspection system adds inspection of the appearance and environment of the substation's secondary equipment devices and sends the inspection results to the substation digital twin platform. The remote optimization control application of the substation digital twin platform, combined with the visualized 3D model, for remote optimization control of substation field equipment further includes: Step 3.1: The digital twin platform server monitors in real time the optimized control message file generated based on the multi-source data analysis results pushed by the integrated application host. The optimized control message file contains the optimized control type, analysis basis, control device location, and operation type. Step 3.2: The digital twin platform server pushes the key fields of the optimized control file to the front-end webpage for display. The substation remote optimization control application is the highest-authority functional module of the platform application. After receiving the optimization control message, the front-end immediately executes the front-end display instruction to visualize the optimization control content in combination with the 3D model. Step 3.3: Select one of three processing methods based on the optimized control content: confirmation operation, temporary cancellation, and complete cancellation. Confirmation operation involves issuing a confirmation command to the control equipment points in the optimized control content. The control command is sent to the main and auxiliary monitoring systems via the reverse control function of the IEC104 protocol communication. The execution completion status can be viewed through the application's task list. Temporary cancellation suspends the optimized control task, which is viewed and operated through the application's task list and is in an unprocessed state. Complete cancellation means the user confirms that they will not process the optimized control task and directly deletes it; the task is viewed through the application's task list and is in a cancelled state. Step 3.4: Obtain the task analysis basis contained in the optimization control task content and display it in the form of a list on the application front end. Each analysis basis can be located in three-dimensional space and viewed in video through shortcut buttons to assist users in analyzing and judging whether to execute the optimization control task on the digital twin platform. Step 3.5: After the optimization control task confirmation operation is completed, the main and auxiliary monitoring systems will return the execution results to the digital twin platform server. The returned results include: not executed, successfully issued, canceled, successfully executed, execution timed out, execution failed, or service error. After processing the returned results, the server will display different statuses in the front-end task list and determine the processing operations that can be performed based on the current status, and display the subsequent operation buttons.

2. The substation remote optimization control method based on digital twin as described in claim 1, characterized in that, In step 1, the three-dimensional spatial model file of the substation is constructed through the following process: Step 1.1: Integrate multi-source data information such as laser point cloud of substation equipment, oblique photography, construction drawings, equipment structural drawings and equipment images, and combine them with the BIM 3D model applied in the engineering construction phase to construct a digitally accurate coordinate 3D scene, generate a virtual scene that is restored to the actual substation at a 1:1 scale, and establish a 3D static model covering all primary and secondary equipment in the station, including the geometric model of the equipment, logical topological relationships and spatial location transformation attribute file information; Step 1.2: Based on the digital twin platform, define the interface attribute information of the three-dimensional model of the substation's primary and secondary equipment, status lights, terminal blocks, and hard pressure plates. By standardizing the naming rules of the three-dimensional model and configuring the associated information table, correspond to the attributes in the background database to generate a unique identifier mapping relationship between the three-dimensional spatial model and the substation SCD model file. Step 1.3: Establish a unique association between the 3D camera, robot model, and corresponding objects in the intelligent inspection system, and view the real-time status of the site by clicking on the 3D model.

3. The substation remote optimization control method based on digital twin according to claim 2, characterized in that, Step 2, establishing data interaction and communication between the substation monitoring system, online monitoring system, and intelligent inspection system, further includes: Step 2.1: Use the communication method based on the IEC104 standard protocol to access the four remote data of the substation main and auxiliary monitoring system in substation zone III, and output the operation command for confirming the execution of the remote optimization control task back to the main and auxiliary monitoring system; Step 2.2: Obtain the information, data, images and real-time video streams of the entire equipment inspection results of the substation intelligent inspection system in Substation III area based on the HTTP protocol communication method. View the inspection task results and the corresponding real-time video of the camera in the digital twin platform, and control the inspection status of the inspection camera and robot in reverse on the digital twin platform, and issue inspection tasks to the intelligent inspection system. Step 2.3: Based on the communication method of E-file transmission through the forward and reverse isolation device, obtain the results information and data of the real-time operation and maintenance diagnosis and analysis of the substation equipment status from the substation online monitoring system, including the evaluation and prediction documents and inspection reports of primary and secondary equipment, and use the online monitoring system for diagnostic analysis.

4. The substation remote optimization control method based on digital twin according to claim 3, characterized in that, Step 3.3, the step of sending control commands to the main and auxiliary monitoring systems, further includes: Based on operational security and access permissions, a secure operational edge carrier is deployed at the station. A dual-channel constraint mechanism for management and operation is adopted. Based on work order application, identity authentication, and encrypted transmission mechanisms, the reverse output of remote optimization control and remote control operations of substations based on digital twin technology is realized.

5. A digital twin-based remote optimization control system for substations, utilizing the digital twin-based remote optimization control method for substations as described in any one of claims 1-4, comprising a substation digital twin platform establishment module, a data interaction and communication establishment module, and a field equipment remote optimization control module, characterized in that: The substation digital twin platform establishment module is used to establish a substation digital twin platform based on the substation digital design model file, and to construct a visualized 3D model for the substation digital twin platform based on the substation 3D spatial model file. The data interaction communication establishment module is used to establish data interaction communication between the substation monitoring system, online monitoring system and intelligent inspection system. The remote optimization control module for field equipment is used to remotely optimize and control the field equipment of the substation based on the interactive data of the substation monitoring system, online monitoring system, and intelligent inspection system. This is achieved by the substation remote optimization control application of the substation digital twin platform combined with the visualized 3D model. Specifically, the remote optimization control application comprehensively views the on-site operation and maintenance of the substation by displaying the real-time status, real-time alarms, diagnostic alarms, 3D spatial positioning, inspection results, and videos of the substation in a 3D scene. It performs multi-dimensional information confirmation and comprehensive analysis on received remote optimization control tasks, deploys miniature high-definition cameras in the secondary protection cabinets to acquire video and identify whether the terminal block cables inside the cabinets are damaged, on fire, or contain small animals. The intelligent inspection system also includes inspections of the appearance and environment of the substation's secondary equipment, sending the inspection results to the substation digital twin platform. The remote optimization control module for field equipment is further used for: The digital twin platform server monitors in real time the optimized control message file generated based on the multi-source data analysis results pushed by the integrated application host. The optimized control message file contains the optimized control type, analysis basis, control device location and operation type. The digital twin platform server pushes the key fields of the optimized control file to the front-end webpage for display. The substation remote optimization control application is the highest-level functional module of the platform application. After receiving the optimization control message, the front-end immediately executes the front-end display instruction to visualize the optimization control content in combination with the 3D model. Based on the optimized control content, one of three processing methods is selected: confirmation operation, temporary cancellation, and complete cancellation. Confirmation operation involves issuing a confirmation command to the control equipment points within the optimized control content. This command is sent to the main and auxiliary monitoring systems via the reverse control function of the IEC104 protocol communication, and the execution completion status can be viewed through the application's task list. Temporary cancellation suspends the optimized control task, which is viewed and operated through the application's task list and is in an unprocessed state. Complete cancellation indicates that the user confirms that they will not process the optimized control task and directly deletes it; the task is viewed through the application's task list and is in a cancelled state. The task analysis basis contained in the optimization control task content is obtained and displayed in a list form on the application front end. Each analysis basis can be located in three-dimensional space and viewed in video through shortcut buttons, which helps users analyze and judge whether to execute the optimization control task on the digital twin platform. After the optimization control task confirmation operation is completed, the main and auxiliary monitoring systems will return the execution results to the digital twin platform server. The returned results include: not executed, successfully issued, canceled, successfully executed, execution timed out, execution failed, or service error. After processing the returned results, the server displays different statuses in the front-end task list and determines the processing operations that can be performed based on the current status, displaying the subsequent operation buttons.

6. The substation remote optimization control system based on digital twin according to claim 5, characterized in that, The three-dimensional spatial model file of the substation is constructed through the following process: By integrating multi-source data information such as laser point clouds of substation equipment, oblique photography, construction drawings, equipment structural drawings and equipment images, and combining them with the BIM 3D model applied during the engineering construction phase, a digitally accurate coordinate 3D scene is constructed to generate a virtual scene that is restored to the actual substation at a 1:1 scale. A 3D static model covering all primary and secondary equipment in the station is established, including the geometric model of the equipment, logical topological relationships and spatial location transformation attribute file information. The full-station equipment model built on the digital twin platform defines the interface attribute information of the three-dimensional model of primary and secondary equipment, status lights, terminal blocks and hard pressure plates in the substation. By standardizing the naming rules of the three-dimensional model and configuring the association information table, it corresponds with the attributes in the background database, and generates a unique identifier mapping relationship between the three-dimensional spatial model and the substation SCD model file. Establish a unique association between the 3D camera, robot model, and corresponding object in the intelligent inspection system, and view the real-time status of the site by clicking on the 3D model.

7. The substation remote optimization control system based on digital twin according to claim 6, characterized in that, The data interaction communication establishment module is further used for: The communication method based on the IEC104 standard protocol is used to access the four remote data of the substation main and auxiliary monitoring system in substation zone III, and the operation command for confirming the execution of remote optimization control task is output back to the main and auxiliary monitoring system. Information, data, images, and real-time video streams of the substation intelligent inspection system in Substation Zone III are obtained through communication based on the HTTP protocol. The inspection task results and corresponding real-time video of the cameras are viewed in the digital twin platform. The inspection status of the inspection cameras and robots is controlled in reverse on the digital twin platform, and inspection tasks are issued to the intelligent inspection system. Based on the communication method of E-file transmission through the forward and reverse isolation device, the results information and data of the real-time operation and maintenance diagnosis and analysis of substation equipment status by the substation online monitoring system are obtained, including assessment and prediction documents and inspection reports of primary and secondary equipment, and the online monitoring system is used for diagnostic analysis.

8. The substation remote optimization control system based on digital twin according to claim 7, characterized in that, The remote optimization control module for field equipment is further used for: Based on operational security and access permissions, a secure operational edge carrier is deployed at the station. A dual-channel constraint mechanism for management and operation is adopted. Based on work order application, identity authentication, and encrypted transmission mechanisms, the reverse output of remote optimization control and remote control operations of substations based on digital twin technology is realized.

9. A terminal, comprising a processor and a storage medium; characterized in that: The storage medium is used to store instructions; The processor is configured to operate according to the instructions to perform the steps of the digital twin-based substation remote optimization control method according to any one of claims 1-4.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When executed by a processor, the program implements the steps of the digital twin-based substation remote optimization control method as described in any one of claims 1-4.

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