Protection secondary safety measure visual interaction method, system, equipment and medium

Abstract

The invention discloses a protection secondary safety measure visual interaction method, which belongs to the technical field of power system protection, and comprises the following steps: S1, model construction: constructing a three-dimensional visual model corresponding to a physical device of a target protection secondary circuit according to the physical device of the target protection secondary circuit in a ratio of 1: 1; s2, carrying out interactive operation, providing a virtual operation component library, responding to a dragging instruction of a user, and carrying out interactive adaptation on a selected virtual operation component and an operable area in the three-dimensional visual model so as to simulate real safety measure operation; s3, operation verification: based on a preset structured rule base, verifying whether the interactive operation accords with a safety regulation or not in real time, and prompting or intercepting when the verification is not passed; and S4, state feedback. According to the method, the 1: 1 physical equipment model is constructed in the virtual space, a user is allowed to carry out immersive operation simulation, and the problems that in existing protection secondary safety measure operation, visualization is insufficient, interactivity is weak, verification depends on manpower, and state feedback is lagged are solved.

Description

Technical Field

[0001] This invention belongs to the field of power system protection technology, specifically relating to a visual interactive method for secondary safety measures. Background Technology

[0002] In the current power system, the operation of secondary safety measures (such as short-circuiting, grounding, and disconnecting the secondary circuit of the current transformer) is the core link to ensure maintenance safety. However, existing technical means have long relied on traditional methods and have many unsolvable defects.

[0003] Current operations mainly rely on paper safety tickets, two-dimensional CAD circuit diagrams, or simple planar simulation interfaces. The first problem they face is the extremely low level of visualization: the spatial relationships of components such as CT, PT equipment, terminal blocks, and terminals in the secondary circuit can only be indirectly presented through lines and text labels on planar drawings. Operators need to rely on experience to "fill in" the three-dimensional structure in their minds, which is not only time-consuming and laborious, but also very easy to select the wrong operating terminal or wiring position due to spatial cognitive bias. This is especially unfriendly to novice operators.

[0004] Secondly, the operation rehearsals are seriously out of touch with the actual scenarios: existing methods cannot simulate real operation actions such as "picking up the jumper wire and aligning it with the terminal" and "connecting the grounding wire to the grounding stake". The rehearsals are mostly verbal repetitions or drawing on drawings. Operators cannot familiarize themselves with key elements such as the positional accuracy and range of motion of the operation in advance, which greatly reduces the effectiveness of the rehearsals and makes it easy to make mistakes during on-site operation.

[0005] More importantly, the verification of operational compliance relies entirely on manual labor: the compliance requirements for the preconditions of the safety operation (such as whether the primary equipment is powered off or whether the testing instrument is disconnected) and the execution sequence (such as the CT circuit needing to be "short-circuited before grounding") must be checked by the operator against the safety operation ticket one by one. Manual verification is not only inefficient, but also prone to missing key conditions due to fatigue or negligence, which may lead to major safety risks such as the CT circuit being open and generating high voltage or accidentally touching live terminals.

[0006] Furthermore, the post-operation status feedback is not intuitive: after the safety measures are implemented, it is impossible to confirm in real time whether the equipment is truly in a safe state (e.g., whether the short circuit is continuous, whether the grounding is reliable) during the pre-operation phase. Measurements can only be taken on-site using a multimeter, making it impossible to identify potential hazards in advance. These shortcomings collectively result in low efficiency, high risk, and high training costs for existing secondary safety measures, making them difficult to adapt to the needs of intelligent operation and maintenance in modern power systems. Summary of the Invention

[0007] The purpose of this invention is to overcome the shortcomings of the prior art and provide a visual interactive method for protecting secondary safety measures, thereby solving the technical problems mentioned in the background art.

[0008] The objective of this invention is achieved as follows: a visualization and interactive method for secondary safety measures, comprising the following steps: S1, model construction: based on the physical equipment of the target secondary protection circuit, construct a 1:1 corresponding 3D visualization model; S2, interactive operation: providing a virtual operation component library, responding to user drag commands, and interactively adapting the selected virtual operation component with the operable area in the 3D visualization model to simulate real safety measures operation; S3, operation verification: based on a pre-set structured rule base, verifying in real time whether the interactive operation complies with safety procedures, and providing prompts or blocking when verification fails; S4, status feedback: based on the results of the interactive operation, updating and visually displaying the status of relevant components in the 3D visualization model in real time. By constructing a 1:1 physical equipment model in virtual space, users can perform immersive operation simulation, and a rule engine is introduced to conduct real-time compliance review of the simulated operation. Finally, the operation results are visualized and fed back, thereby completing the entire process of safety verification before real operation. This fundamentally changes the traditional safety measures planning model that relies on drawings and manual experience, realizing the visualization, simulation, and verification of the work process. It can detect and stop illegal operation sequences in advance, which greatly improves the reliability of the plan and the safety of personnel before the operation.

[0009] Step S1, specifically the model construction steps, include: acquiring spatial data of the physical device using a 3D scanning device; processing the acquired spatial data to generate an initial 3D model consistent with the actual size, position, and wiring relationships; lightweighting the initial 3D model and exporting it to a web-supported format, and then rendering and allowing free-viewpoint operation in a browser using a WebGL rendering engine. In implementation, precise point cloud data of the device at the site is first acquired using a 3D scanner to generate an initial 3D model. Subsequently, the model undergoes lightweighting processes such as polygon reduction and baking, and is converted to WebGL and other formats, ultimately achieving plugin-free 3D display and interaction in a browser. The "real-scene replication + lightweighting" technical approach ensures a high degree of consistency between the virtual model and the real scene, while guaranteeing smooth operation on ordinary computers (especially web browsers). This ensures the realism and universality of the simulation environment. The consistency between the model and the physical object makes the pre-simulation conclusions credible; based on web technology, the system requires no complex deployment, and on-site personnel can access it through a browser, resulting in low promotion costs.

[0010] In step S2, the interaction adaptation between the virtual operation component and the operable area is achieved through a ray detection algorithm. Specifically, this includes: real-time calculation of the intersection point between the ray corresponding to the user's drag command and the 3D visualization model; determining whether the intersection point falls into a preset operable area; if it does, providing a visual snapping prompt, and triggering an animation effect connecting the virtual operation component and the operable area when the user releases the virtual operation component. Utilizing the "ray collision detection" algorithm in computer graphics, the user's mouse operation on the 2D screen is accurately mapped to a specific operation component in the 3D virtual space, achieving intuitive "pointing" operation. When the user drags a virtual component, the system emits a virtual ray from the mouse position. The intersection point of this ray with all objects in the 3D scene is calculated, the first component that is "hit" and preset as "operable" (such as a specific terminal) is found, and then that component is highlighted (visual snapping), completing the connection logic. This lowers the operational threshold of 3D software, allowing operators to quickly get started and focus on the security logic itself rather than software operation.

[0011] In step S3, the structured rule base contains multiple rules, each rule being associated with at least the operation object, preconditions, judgment logic, and error message. The operation verification steps specifically include: listening to the interactive operation event, obtaining the object type of the current operation and the current state of the 3D visualization model; matching the object type and current state of the current operation with the rules in the rule base; if a rule is matched but its preconditions or judgment logic are not met, then the corresponding error message is triggered and the operation is prevented from completing.

[0012] The multiple rules shall include at least one of the following:

[0013] Rule 1: When the object of operation is the CT secondary terminal and the current task is CT circuit maintenance, the virtual connection operation of the shorting wire must be completed first before the virtual disconnection operation is allowed.

[0014] Rule 2: When the object of the operation is a grounding stake and the operation type is grounding wire connection, a virtual operation to verify that there is no electricity must be completed first.

[0015] Rule 3: When the object of the operation is a protective device fuse and the operation type is fuse removal, a virtual operation to disconnect the power supply to the equipment must be completed first.

[0016] During implementation, taking Rule 1 as an example, when a user attempts to "disconnect the CT secondary terminals," the system checks whether the "short-circuit wire corresponding to the CT" in the current model is already in a "connected" state. If it is not connected, the disconnection operation is prohibited, and a message is displayed: "Please short-circuit first!" This directly sets up a technical defense against the most serious catastrophic accident risks such as CT open circuits, live grounding, and live wire disconnection. This ensures that critical life-saving measures must be implemented during the simulation phase, forming a "technically enforced" checkpoint to prevent major errors.

[0017] In step S4, the status feedback step adopts a multi-dimensional display scheme, including at least one of the following:

[0018] Color coding allows for the preset of corresponding colors for different operation states, and the model color of the relevant components changes in real time after the operation is completed; floating labels display labels next to the components that have completed the operation, indicating their current status details; and report summaries dynamically generate and display summary reports of operation steps, execution time, and compliance results in specific areas of the interface.

[0019] By employing a multimodal information presentation principle of "primarily visual channels, supplemented by text reports," the intangible electrical status is transformed into highly suggestive visual signals and structured text. This provides a panoramic status awareness that is clear at a glance and allows for detailed verification of specific areas. It avoids information overload or omissions, enabling operators, supervisors, and subsequent reviewers to quickly and accurately grasp the complete status of the entire safety measure deployment, improving collaboration efficiency and review accuracy.

[0020] A secondary safety measure visualization and interactive system for implementing the above-mentioned method includes: a 3D visualization module for loading, rendering, and providing interactive control of a 1:1 3D visualization model; an interactive operation module for providing a virtual operation component library and managing the interaction logic between the virtual operation components and the 3D model; an operation verification module with an embedded structured rule library for performing the real-time verification; and a status visualization module for implementing real-time status feedback.

[0021] An electronic device includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the method described above.

[0022] A computer-readable storage medium having a computer program stored thereon that, when executed by a processor, implements the above-described method.

[0023] The beneficial effects of this invention are as follows: It provides a "what you see is what you get" visual interactive system and implementation method for secondary protection measures, solving the core technical defects of existing secondary protection measures operations, namely "insufficient visualization, weak interactivity, reliance on manual verification, and delayed status feedback." First, it constructs a 3D visualization model that is 1:1 replicated from the actual protection device, intuitively presenting the spatial structure and component layout of the secondary circuit, solving the problem of spatial cognition. Second, it builds an interactive virtual operating environment, supporting the simulation of real operation actions through dragging and dropping virtual components, improving the realism of the rehearsal. Third, it develops an automated operation verification module to verify the preconditions and execution sequence of the operation in real time, intercepting erroneous operations from a technical perspective. Fourth, it designs a real-time status visualization feedback mechanism, making the equipment status after operation clear at a glance, improving operational efficiency, and ultimately achieving more accurate rehearsals, safer operation, and intelligent management of secondary protection measures. Attached Figure Description

[0024] Figure 1 This is a system architecture diagram of the present invention;

[0025] Figure 2 This is a flowchart of the operation of the present invention. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings. It should be noted that this is only for the purpose of more clearly illustrating and explaining the present invention.

[0027] like Figure 1 and 2 As shown, this embodiment discloses a visualization and interactive method for secondary safety measures, including the following steps: S1, Model construction: Based on the physical equipment of the target secondary protection circuit, a 1:1 corresponding 3D visualization model is constructed; S2, Interactive operation: A virtual operation component library is provided, responding to the user's drag-and-drop commands, and the selected virtual operation component is interactively adapted to the operable area in the 3D visualization model to simulate real safety measures operation; S3, Operation verification: Based on a pre-set structured rule base, the interactive operation is verified in real time to ensure compliance with safety procedures, and prompts or interception are given when the verification fails; S4, Status feedback: Based on the results of the interactive operation, the status of relevant components in the 3D visualization model is updated in real time and visualized. By constructing a 1:1 physical equipment model in virtual space, users can perform immersive operation simulation, and a rule engine is introduced to conduct real-time compliance review of the simulated operation. Finally, the operation results are visualized and fed back, thereby completing the safety verification of the entire process before real operation. This fundamentally changes the traditional safety measures planning mode that relies on drawings and manual experience, and realizes the visualization, simulation, and verification of the work process. It can detect and stop illegal operation sequences in advance, which greatly improves the reliability of the plan and the safety of personnel before the operation.

[0028] Step S1, specifically the model construction steps, include: acquiring spatial data of the physical device using a 3D scanning device; processing the acquired spatial data to generate an initial 3D model consistent with the actual size, position, and wiring relationships; lightweighting the initial 3D model and exporting it to a web-supported format, and then rendering and allowing free-viewpoint operation in a browser using a WebGL rendering engine. In implementation, precise point cloud data of the device at the site is first acquired using a 3D scanner to generate an initial 3D model. Subsequently, the model undergoes lightweighting processes such as polygon reduction and baking, and is converted to WebGL and other formats, ultimately achieving plugin-free 3D display and interaction in a browser. The "real-scene replication + lightweighting" technical approach ensures a high degree of consistency between the virtual model and the real scene, while guaranteeing smooth operation on ordinary computers (especially web browsers). This ensures the realism and universality of the simulation environment. The consistency between the model and the physical object makes the pre-simulation conclusions credible; based on web technology, the system requires no complex deployment, and on-site personnel can access it through a browser, resulting in low promotion costs.

[0029] In step S2, the interaction adaptation between the virtual operation component and the operable area is achieved through a ray detection algorithm. Specifically, this includes: real-time calculation of the intersection point between the ray corresponding to the user's drag command and the 3D visualization model; determining whether the intersection point falls into a preset operable area; if it does, providing a visual snapping prompt, and triggering an animation effect connecting the virtual operation component and the operable area when the user releases the virtual operation component. Utilizing the "ray collision detection" algorithm in computer graphics, the user's mouse operation on the 2D screen is accurately mapped to a specific operation component in the 3D virtual space, achieving intuitive "pointing" operation. When the user drags a virtual component, the system emits a virtual ray from the mouse position. The intersection point of this ray with all objects in the 3D scene is calculated, the first component that is "hit" and preset as "operable" (such as a specific terminal) is found, and then that component is highlighted (visual snapping), completing the connection logic. This lowers the operational threshold of 3D software, allowing operators to quickly get started and focus on the security logic itself rather than software operation.

[0030] In step S3, the structured rule base contains multiple rules, each rule being associated with at least the operation object, preconditions, judgment logic, and error message. The operation verification steps specifically include: listening to the interactive operation event, obtaining the object type of the current operation and the current state of the 3D visualization model; matching the object type and current state of the current operation with the rules in the rule base; if a rule is matched but its preconditions or judgment logic are not met, the corresponding error message is triggered and the operation is prevented from completing. The multiple rules include at least one of the following: Rule 1: When the operation object is a CT secondary terminal and the current task is CT circuit maintenance, the virtual connection operation of the shorting wire must be completed before the virtual disconnection operation is allowed; Rule 2: When the operation object is a grounding stake and the operation type is grounding wire connection, the virtual operation of verifying that there is no power must be completed first; Rule 3: When the operation object is a protection device fuse and the operation type is fuse removal, the virtual operation of disconnecting the equipment power supply must be completed first.

[0031] During implementation, taking Rule 1 as an example, when a user attempts to "disconnect the CT secondary terminals," the system checks whether the "short-circuit wire corresponding to the CT" in the current model is already in a "connected" state. If it is not connected, the disconnection operation is prohibited, and a message is displayed: "Please short-circuit first!" This directly sets up a technical defense against the most serious catastrophic accident risks such as CT open circuits, live grounding, and live wire disconnection. This ensures that critical life-saving measures must be implemented during the simulation phase, forming a "technically enforced" checkpoint to prevent major errors.

[0032] In step S4, the status feedback step adopts a multi-dimensional display scheme, including at least one of the following:

[0033] Color coding allows for the preset of corresponding colors for different operation states, and the model color of the relevant components changes in real time after the operation is completed; floating labels display labels next to the components that have completed the operation, indicating their current status details; and report summaries dynamically generate and display summary reports of operation steps, execution time, and compliance results in specific areas of the interface.

[0034] By employing a multimodal information presentation principle of "primarily visual channels, supplemented by text reports," the intangible electrical status is transformed into highly suggestive visual signals and structured text. This provides a panoramic status awareness that is clear at a glance and allows for detailed verification of specific areas. It avoids information overload or omissions, enabling operators, supervisors, and subsequent reviewers to quickly and accurately grasp the complete status of the entire safety measure deployment, improving collaboration efficiency and review accuracy.

[0035] A secondary safety measure visualization and interactive system for implementing the above-mentioned method includes: a 3D visualization module for loading, rendering, and providing interactive control of a 1:1 3D visualization model; an interactive operation module for providing a virtual operation component library and managing the interaction logic between the virtual operation components and the 3D model; an operation verification module with an embedded structured rule library for performing the real-time verification; and a status visualization module for implementing real-time status feedback.

[0036] An electronic device includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the method described above.

[0037] A computer-readable storage medium having a computer program stored thereon that, when executed by a processor, implements the above-described method.

[0038] During implementation, the hardware support and overall architecture adopt a B / S architecture design. The hardware layer consists of "front-end terminal devices + back-end lightweight servers". The overall architecture features low deployment cost and strong scalability, and its specific composition is as follows:

[0039] Front-end terminal equipment: This serves as the direct interaction platform for operators. Hardware-wise, it only requires terminal devices supporting WebGL rendering (such as desktop computers, tablets, and industrial tablets), without the need for dedicated rendering equipment. The terminal accesses the system through mainstream modern browsers and is responsible for local computing tasks such as 3D model rendering and interactive operation responses. Back-end lightweight server's core responsibilities: ① Store core data such as 3D models, rule bases, and operation logs; ② Provide API interface services (user authentication, rule validation, etc.).

[0040] Architectural advantages: The front-end reuses existing equipment, and the back-end adopts a lightweight configuration, significantly reducing deployment and maintenance costs; the B / S architecture supports LAN / Internet access, adapting to various scenarios such as office operation and on-site access. The system architecture diagram is shown below. Figure 1 As shown.

[0041] The software layer consists of five core modules, which are based on a B / S architecture to achieve front-end and back-end collaboration. The functions and technical implementations of each module are as follows:

[0042] The 3D model rendering module is the foundation of the system. Its technical process is as follows: First, high-precision 3D scanning is used to acquire 3D spatial data of the actual protection device (including CT, PT, secondary terminal block, grounding stake, terminal block, etc., and all key components), ensuring that the model size and component position match the actual object 1:1. Then, the scanning data is optimized using modeling software, and key information such as terminal number, equipment model, and wiring relationship are labeled, and exported into the lightweight GLTF format adapted for the web. Finally, the Three.js rendering engine is integrated to realize free operation of the model—supporting 360° rotation by dragging with the left mouse button, multi-fold scaling with the scroll wheel, and panning with the right mouse button, allowing operators to observe the spatial relationship of components from any perspective, overcoming the cognitive limitations of 2D drawings.

[0043] The interactive operation module is key to enhancing the realism of the operation. It is built based on the HTML5 Drag-and-Drop API and the Three.js Raycaster ray detection algorithm: A virtual component library is set on the left side of the interface, containing 3D virtual components such as shorting wires, grounding wires, and test probes, which are proportional to the real objects. When the operator drags the component, the Raycaster algorithm calculates the intersection point between the mouse and the 3D model in real time. If the intersection point falls on the preset "operable area" (such as terminals or grounding stakes), the system immediately pops up a snap-in prompt and highlights the target area. After the mouse is released, the component automatically snaps to the target area and triggers the corresponding animation (such as displaying a current conduction light effect when shorting and displaying a flashing grounding symbol when grounding), simulating the "alignment-connection" process of real operation.

[0044] The operation verification module is the core of ensuring safety, employing a "rule base + real-time verification" technical logic: First, it reviews all requirements regarding secondary safety measures in power safety regulations, constructing a rule base containing multiple structured rules, covering core rules such as "It is strictly forbidden to directly disconnect the CT circuit without short-circuiting" and "Grounding operations should generally be performed after verifying that there is no power." Each rule is associated with corresponding preconditions, judgment logic, and error prompts. When an operator initiates an operation, the system reads the current virtual status of the equipment in real time (such as whether there is a power outage, and what steps have been executed) and matches it with the rule base for verification. If the preconditions are not met (such as dragging the short-circuit wire without simulating a power outage), the system immediately pops up a "Power outage preconditions not met, operation prohibited" pop-up window and locks the component until the conditions are met. If the operation sequence is incorrect (such as dragging the grounding wire before verifying power), the incorrect steps are marked on the interface, and the guidance information "Correct sequence: Verify that the equipment is de-energized before grounding" is displayed, ensuring compliance throughout the operation. Some examples of core rules are shown in the table below:

[0045] Rule Number Rules Prerequisites Judgment Logic Error message R001 It is strictly forbidden to disconnect the wiring directly without shorting the CT secondary circuit. The object being operated on is the CT secondary terminal; the current task is "CT circuit overhaul". Check if there is an operation record indicating that "a jumper wire is connected to this CT terminal"; if not, it is considered a violation. Do not disconnect the wiring if the CT circuit is not shorted! R002 Grounding operations must be performed after confirming that there is no electricity. The object being operated on is the grounding stake; the operation type is "grounding wire connection". Verify if there is an operation record stating "test probe in contact with target device and reading 0V"; if not, it is considered a violation. Please test for voltage and confirm there is no power before grounding! R003 The power supply to the equipment must be disconnected before removing the fuse. The object of the operation is the protective device fuse; the operation type is "fuse removal". Verify that the switch is in the "off" position; if they are not, a violation is determined. Do not remove the fuse while the power is on!

[0046] The status visualization module provides intuitive feedback on the operation results, adopting a multi-dimensional display scheme of "color coding + floating labels + report summary": preset color rules (light gray for normal status, green for short circuit effect, red for disconnection status, and yellow for grounding completion), and the corresponding component changes color in real time after the operation is completed; at the same time, a floating label pops up next to the component, indicating the specific status such as "grounding wire reliably connected"; the right side of the interface generates a status report in real time, summarizing information such as operation steps, execution time, and compliance results, and supports one-click export to PDF.

[0047] The data storage module enables traceability of the operation process, using a MySQL database to store operation logs (including operator, operation time, each step, and verification results), which facilitates subsequent training reviews and problem tracing.

[0048] Taking "CT secondary circuit short-circuit operation" as an example, the complete visual flowchart of the system from issuing the operation command to data storage is as follows: Figure 2 As shown.

[0049] This invention achieves a comprehensive performance improvement compared to existing technologies through the synergistic effect of five core modules, and all effects can be directly derived from the technical features.

[0050] Firstly, the 1:1 3D model and free-view operation solve the problem of spatial cognition. The operator's understanding of the terminal position and component layout is significantly improved, and the operation preparation time (familiarizing oneself with the drawings and confirming the position) is greatly shortened, eliminating the need to rely on experience to mentally visualize the three-dimensional structure.

[0051] Secondly, the high degree of matching between virtual component drag-and-drop interaction and real operation actions significantly improves the operator's proficiency in on-site operation after rehearsal, greatly shortens the learning cycle for novice operators, and reduces training costs.

[0052] Third, automated rule verification replaces manual verification, which greatly improves the efficiency of operation verification and can effectively intercept erroneous operations, completely avoid safety risks such as open circuit of CT and accidental contact with live parts caused by human negligence, and significantly reduce the operation accident rate.

[0053] Fourth, the visual feedback of the operation status allows operators to confirm the operation effect during the rehearsal stage, eliminating the need for repeated measurements on site, significantly improving the efficiency of operation response and reducing the workload of maintenance personnel.

[0054] Fifth, the lightweight deployment on the web platform requires no dedicated equipment or software installation, significantly reducing deployment costs. It also supports access from mobile devices such as tablets, making it suitable for on-site training scenarios and highly scalable.

[0055] Taking the "drill-up of secondary line removal and insulation protection measures for the 500kV I busbar protection panel of the No. 1 synchronous transformer group in a certain substation" as an example, the actual application process and effects of the technical solution of this invention are as follows:

[0056] The first step is task matching and model loading: After completing identity verification, the operator opens the system web page on the power grid operation and maintenance center terminal and selects the task item "Secondary safety measures for the 500kV I busbar protection panel of No. 1 synchronous transformer group (corresponding to the first / second set of busbar protection panels of 500kV I busbar in 52 compartments)" in the "Safety Measures Task Library". The system automatically matches the equipment hierarchy structure corresponding to the task - including the physical layout of 52 compartments, the first set of busbar protection panels of 500kV I busbar, and the second set of busbar protection panels of 1:1 scale 3D model. At the same time, it loads detailed elements such as secondary line terminals and wiring labels inside the panel cabinet. The operator can adjust the view to the front of the panel cabinet by dragging the mouse and zooming to a suitable scale with the scroll wheel to clearly view the panel cabinet number and the corresponding labels of the secondary line terminals (such as 3212 / ZD7 / 1M1+).

[0057] The second step is the removal of secondary lines from the first set of busbar protection panels of the 500kV I bus: The operator selects the "Secondary Line Removal Tool" virtual component in the "Operation Component Library" on the left, clicks and drags the component to the target secondary line terminal of the "500kV I bus first set of busbar protection panels (52 small room)" in the model. The system identifies the circuit to which the terminal belongs through Raycaster ray detection, immediately highlights the terminal area and pops up a prompt "Removal operation can be performed (corresponding function: 5001 circuit breaker failure trips the first set of busbar first group of positive power input)"; after releasing the mouse, the corresponding secondary line in the model shows a "removal separation" animation, and at the same time the terminal area turns orange, and the floating label displays simultaneously such as "10ARD01GH001-3212 / ZD7 / 1M1+ secondary line removed".

[0058] The third step is insulation protection operation and compliance verification: The operator selects the "red insulating tape" virtual component from the component library and drags it to the exposed end of the removed secondary line. After the system detects the "secondary line removed" status, it triggers the component adsorption action. The exposed end in the model shows a "wrapped in insulating tape" visual effect, and the floating label is updated to something like "10ARD01GH001-3212 / ZD7 / 1M1+ Secondary line removed and insulation protection completed"; at the same time, the system automatically calls the rule library to verify and match the safety requirement that "insulation protection must be performed immediately after the secondary line is removed". After the verification is successful, the interface displays the prompt "Operation compliant (complies with secondary safety measures insulation protection specifications)" and displays the status of the equipment on the other side of the circuit.

[0059] Step 4: Multi-panel cabinet operation and report export: Following the above process, operators complete the steps in the measure ticket, such as "removal of remaining secondary lines of the first set of busbar protection panels for 500kV I bus + insulation protection" and "operation of secondary lines of the second set of busbar protection panels for 500kV I bus". The system records the operation object, execution status, and compliance results of each step in real time. After the operation is completed, click "Export Safety Measures Pre-Drill Report". The system generates a document containing "3D status screenshot of the panel cabinet, the correspondence between the operation steps and the measure ticket, and the status annotation of the opposite side of the circuit", which is synchronized to the terminal of the on-site maintenance team.

[0060] During on-site maintenance, staff can accurately locate the secondary line terminals by referring to the 3D visualization guide in the report, and quickly complete the removal and insulation protection operations. The operation process is completely consistent with the pre-rehearsal content, effectively avoiding problems such as "wrong terminal selection" and "omission of insulation protection". This fully demonstrates the core value of this system in "precise pre-rehearsal and safe management" in complex secondary safety scenarios.

[0061] High-precision 3D scanning is used to collect equipment data, which is then combined with lightweight modeling to generate a 1:1 3D model of the protection device. This model is then rendered in real-time on the web using the Three.js engine, solving the spatial perception problem of two-dimensional carriers. The HTML5 Drag-and-Drop API and Raycaster ray detection algorithm are integrated to achieve precise attachment of virtual components to the operable areas of the 3D model, accurately reproducing the logic of real-world safety operation actions. A structured rule base is built based on power safety regulations, and an automated algorithm of "status reading - rule matching - result feedback" is designed to verify operational compliance in real time and intercept violations. An innovative multi-dimensional display scheme of "color coding + floating labels + report summary" intuitively presents the equipment status after operation, reducing on-site verification workload. A web-based architecture of "task-equipment model automatic matching" is designed, adaptable to multiple operation and maintenance scenarios without dedicated hardware, reducing deployment costs.

[0062] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A visual interactive method for protecting secondary safety measures, characterized in that, Includes the following steps: S1. Model construction: Based on the physical equipment of the target protection secondary circuit, construct a 1:1 corresponding 3D visualization model; S2. Perform interactive operations, provide a virtual operation component library, respond to the user's drag and drop commands, and interactively adapt the selected virtual operation component with the operable area in the three-dimensional visualization model to simulate real safety operation. S3. Operation verification: Based on a pre-set structured rule base, the interactive operation is verified in real time to ensure that it complies with security procedures, and prompts or blocks the operation if the verification fails. S4. Status feedback: Based on the results of the interactive operation, the status of relevant components in the 3D visualization model is updated and visualized in real time.

2. The visualization and interactive method for secondary safety measures as described in claim 1, characterized in that, In step S1, the model construction steps specifically include: Spatial data of the physical device is acquired using a 3D scanning device; The collected spatial data is processed to generate an initial three-dimensional model that matches the actual size, position, and wiring relationship of the object. The initial 3D model is lightweighted and exported to a web-supported format, and then rendered and manipulated in a browser using the WebGL rendering engine.

3. The visualization and interactive method for secondary safety measures as described in claim 1, characterized in that, In step S2, the interaction adaptation between the virtual operation component and the operable area is achieved through a ray detection algorithm, specifically including: The intersection point between the ray corresponding to the user's drag command and the 3D visualization model is calculated in real time. Determine whether the intersection point falls into a preset operable area; if it does, provide a visual snapping prompt, and trigger an animation effect connecting the virtual operable component with the operable area when the user releases the virtual operable component.

4. The visualization and interactive method for secondary safety measures as described in claim 1, characterized in that, In step S3, the structured rule base contains multiple rules, and each rule is associated with at least the operation object, preconditions, judgment logic, and error message; The operation verification steps specifically include: Listen for the interactive operation events to obtain the type of the object being operated on and the current state of the 3D visualization model; Match the type and current state of the object being operated on with the rules in the rule base; If a rule is matched but its preconditions or judgment logic are not met, the corresponding error message will be triggered and the operation will be prevented from completing.

5. The visualization and interactive method for secondary safety measures according to claim 4, characterized in that, The multiple rules shall include at least one of the following: Rule 1: When the object of operation is the CT secondary terminal and the current task is CT circuit maintenance, the virtual connection operation of the shorting wire must be completed first before the virtual disconnection operation is allowed. Rule 2: When the object of the operation is a grounding stake and the operation type is grounding wire connection, a virtual operation to verify that there is no electricity must be completed first. Rule 3: When the object of the operation is a protective device fuse and the operation type is fuse removal, a virtual operation to disconnect the power supply to the equipment must be completed first.

6. The visualization and interactive method for secondary safety measures according to claim 1, characterized in that, In step S4, the status feedback step adopts a multi-dimensional display scheme, including at least one of the following: Color coding allows for the preset of corresponding colors for different operating states. Once the operation is completed, the model color of the relevant components changes in real time. Floating labels are displayed next to components that have completed an operation, indicating their current status details; The report summary is dynamically generated and displayed in a specific area of ​​the interface, summarizing the operation steps, execution time, and compliance results.

7. A visual interactive system for protecting secondary safety measures, used to implement the method as described in any one of claims 1 to 6, characterized in that, include: The 3D visualization module is used to load, render, and provide interactive control over 1:1 3D visualization models; The interactive operation module provides a virtual operation component library and manages the interaction logic between the virtual operation components and the 3D model. The operation verification module has an embedded structured rule base for performing the real-time verification. The status visualization module is used to provide real-time status feedback.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the method as described in any one of claims 1 to 6.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the program is executed by the processor, it implements the method as described in any one of claims 1 to 6.

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