Stress deformation monitoring methods, devices, equipment, and media for GIL pipe busbars and compensation units.

Abstract

This invention relates to a method, device, equipment, and medium for monitoring stress deformation of GIL (Gas Injection Line) pipe jacks and compensation units. It constructs a three-dimensional finite element model matching the target GIL equipment, providing a precise digital carrier for stress deformation simulation. Real-time acquisition of displacement data from segmented pipe jacks and compensation units serves as the boundary conditions for simulation measurements, overcoming the limitations of traditional manual monitoring, such as lack of continuous data acquisition and low accuracy. The displacement data is input into the model for simulation, converting measurable displacement into quantitative data on stress deformation that cannot be obtained on-site. It also reflects deformation in areas where sensors are not deployed, avoiding missed detections where deformation exceeds limits in other areas even if the measured point is within limits. The calculated data is visualized, and limit exceedance judgments are automatically made based on preset thresholds. When limits are exceeded, timely warning notifications are generated and sent, achieving automatic identification and alarm of stress deformation anomalies. This provides quantitative data support for safe equipment operation and solves the technical problems of traditional monitoring, such as lack of quantitative analysis, lack of memory function, and lack of limit exceedance alarms.

Description

Technical Field

[0001] This application relates to the field of condition monitoring of high-voltage transmission equipment in power systems, specifically to a method, device, equipment, and medium for monitoring stress deformation of GIL busbars and compensation units. Background Technology

[0002] With the rapid development of ultra-high voltage and large-capacity power transmission technology in my country, gas-insulated metal-enclosed transmission lines (GILs), with their core advantages such as large transmission capacity, strong overload capacity, stable insulation performance, strong environmental adaptability, and flexible layout, have been widely used in environmentally constrained power transmission scenarios such as high-drop mega-hydropower stations, underground substations, and large-capacity underground power transmission in urban core areas. They have become a core and critical piece of equipment in the field of medium- and long-distance, large-capacity power transmission. At the same time, with the continuous expansion of the scale of GIL equipment in operation and the gradual increase in its service life, the power grid's requirements for the long-term safe and stable operation of GIL equipment are constantly increasing. Accurate monitoring of the operating status, displacement deformation, and stress changes of GIL busbars and compensation units, full-cycle data traceability, and safety risk prediction have become core requirements in the field of GIL equipment operation and maintenance.

[0003] In related technologies, deformation monitoring of GIL equipment often involves setting mechanical scales and displacement markers at the sliding support and obtaining displacement data through manual on-site observation.

[0004] However, it is impossible to achieve online real-time monitoring of stress deformation of GIL tube busbar and compensation unit, resulting in low measurement accuracy, high operation and maintenance costs, strong data lag, inability to detect potential safety hazards in equipment structure in a timely manner, and difficulty in ensuring the safe and stable operation of GIL equipment. Summary of the Invention

[0005] This application provides a method, device, equipment, and medium for monitoring stress deformation of GIL pipe busbars and compensation units, which can solve the problems of insufficient accuracy in stress deformation monitoring of GIL equipment and the inability to perform online real-time monitoring and intelligent early warning in related technologies.

[0006] In a first aspect, embodiments of this application provide a method for monitoring the stress deformation of a GIL (Gas Injection Line) equipment duct busbar and compensation unit, the method comprising: Construct a three-dimensional finite element model of the target GIL equipment main tube and compensation unit; Real-time displacement monitoring data of each segment of the target GIL equipment and its corresponding compensation unit are collected; The displacement monitoring data is input into the three-dimensional finite element model as boundary conditions, and the stress deformation data of the GIL pipe main body and the stress deformation data of the compensation unit are calculated respectively. The stress deformation data of the GIL tube main and the stress deformation data of the compensation unit are visualized and displayed, and the over-limit judgment and early warning notification are completed based on the preset safety threshold.

[0007] In conjunction with the first aspect, in one implementation, the construction of the three-dimensional finite element model of the target GIL equipment duct and compensation unit includes: Create a three-dimensional geometric solid model of the target GIL equipment's main pipe and compensation unit; Assign material property parameters corresponding to the structure to the three-dimensional geometric solid model; The three-dimensional geometric solid model with assigned material properties is meshed to generate the corresponding three-dimensional finite element model.

[0008] In conjunction with the first aspect, in one implementation, the real-time acquisition of displacement monitoring data of each segment of the target GIL equipment and its corresponding compensation unit includes: Displacement sensing units are installed at the sliding support positions of each section of the target GIL equipment and at the movable connection positions of the compensation units. The displacement sensing unit collects displacement data of each segment of the main tube and displacement data of the sliding support of the compensation unit in real time, and generates corresponding displacement monitoring data.

[0009] In conjunction with the first aspect, in one implementation, the step of inputting the displacement monitoring data as boundary conditions into the three-dimensional finite element model to calculate the stress-deformation data of the GIL pipe main and the stress-deformation data of the compensation unit respectively includes: The collected displacement monitoring data and the self-weight load of the GIL equipment pipe busbar are used as core boundary conditions to set corresponding constraint conditions for the three-dimensional finite element model. Based on the three-dimensional finite element model, the coupled calculation of the gravity field and stress field is completed, and the equivalent stress data and deformation data of each segment of the main tube, and the equivalent stress data and displacement deformation data of each compensation unit are output respectively.

[0010] In conjunction with the first aspect, in one implementation, the step of determining and issuing warnings based on a preset safety threshold includes: Set the safety threshold for stress deformation of the GIL tube and the safety threshold for displacement deformation of the compensation unit respectively; Compare the calculated stress deformation data of each segment of the main pipe with the corresponding safety threshold, and compare the stress deformation data of each compensation unit with the corresponding safety threshold. When any comparison result exceeds the corresponding security threshold, a corresponding warning message is generated and a warning notification is sent to the operation and maintenance department.

[0011] In conjunction with the first aspect, in one implementation, the following steps are also included: Based on the calculated stress and deformation data of each segment of the main tube and the stress and deformation data of each compensation unit, a structural safety assessment of the main tube and compensation unit of the target GIL equipment is conducted. If the equivalent stress value in the stress deformation data of one of the pipe segments exceeds the yield strength threshold of the corresponding material, it is determined that the pipe segment has the risk of plastic deformation and cracking. If the displacement deformation value in the stress deformation data of one of the compensation units exceeds the maximum allowable shrinkage threshold of its structure, the compensation unit is deemed to have a risk of structural damage.

[0012] In conjunction with the first aspect, in one implementation, the following steps are also included: The continuously collected displacement monitoring data and the corresponding calculated stress deformation data are stored and trend analyzed to generate stress deformation development trend curves for the GIL equipment main tube and compensation unit. Based on the stress-deformation development trend curve, the potential structural risks of the GIL equipment main tube and compensation unit are predicted, and the corresponding prediction results are output.

[0013] Secondly, embodiments of this application provide a stress deformation monitoring device for GIL equipment duct busbars and compensation units, the stress deformation monitoring device for GIL equipment duct busbars and compensation units comprising: The model building module is used to construct a three-dimensional finite element model of the target GIL equipment main tube and compensation unit; The data acquisition module is used to collect displacement monitoring data of each segment of the target GIL equipment and its corresponding compensation unit in real time. The stress calculation module is used to input the displacement monitoring data as boundary conditions into the three-dimensional finite element model and calculate the stress deformation data of the GIL pipe main body and the stress deformation data of the compensation unit, respectively. The display and early warning module is used to visualize the stress deformation data of the GIL tube and the stress deformation data of the compensation unit, and to complete the over-limit judgment and early warning notification based on the preset safety threshold.

[0014] Thirdly, embodiments of this application provide a stress deformation monitoring device for GIL equipment main tubes and compensation units. The GIL equipment main tubes and compensation units stress deformation monitoring device includes a processor, a memory, and a GIL equipment main tubes and compensation units stress deformation monitoring program stored in the memory and executable by the processor. When the GIL equipment main tubes and compensation units stress deformation monitoring program is executed by the processor, it implements the steps of the GIL equipment main tubes and compensation units stress deformation monitoring method as described in some of the above embodiments.

[0015] Fourthly, embodiments of this application provide a computer-readable storage medium, characterized in that the computer-readable storage medium stores a stress deformation monitoring program for GIL device main tubes and compensation units, wherein when the stress deformation monitoring program for GIL device main tubes and compensation units is executed by a processor, it implements the steps of the stress deformation monitoring method for GIL device main tubes and compensation units as described in some of the above embodiments.

[0016] The beneficial effects of the technical solutions provided in this application include: A three-dimensional finite element model matching the target GIL equipment is constructed to provide a precise digital carrier for stress deformation simulation. Displacement data from segmented pipe sections and compensation units are collected in real time as boundary conditions for simulation measurements, overcoming the limitations of traditional manual monitoring, such as lack of continuous data acquisition and low accuracy. The displacement data is input into the model for simulation, converting measurable displacement into quantitative stress deformation data that cannot be obtained on-site. This also reflects deformation in areas where sensors are not deployed, avoiding missed detections where deformation exceeds limits in other areas even if the measured point is within limits. The calculated data is visualized, and limit exceedance judgments are automatically made based on preset thresholds. When limits are exceeded, early warning notifications are generated and sent in a timely manner, achieving automatic identification and alarm of stress deformation anomalies. This provides quantitative data support for the safe operation of the equipment and solves the technical problems of traditional monitoring, such as lack of quantitative analysis, lack of memory function, and lack of limit exceedance alarms. Attached Figure Description

[0017] Figure 1 This is a schematic flowchart of an embodiment of the stress deformation monitoring method for GIL equipment tube nut and compensation unit of this application; Figure 2 This is a schematic diagram of the structure of an embodiment of the GIL device and compensation unit of this application; Figure 3 This is a schematic diagram of the hardware structure of the stress deformation monitoring device for the GIL equipment tube and compensation unit involved in the embodiments of this application.

[0018] In the diagram: 1. Segmented pipe liner; 2. Compensation unit; 3. Fixed support component; 4. Displacement sensing unit. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0020] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0021] In a first aspect, embodiments of this application provide a method for monitoring stress deformation of the GIL equipment tube nut and compensation unit.

[0022] In one embodiment, reference is made to Figure 1 , Figure 1 This is a flowchart illustrating the first embodiment of the stress deformation monitoring method for GIL equipment pipe busbars and compensation units according to this application. Figure 1 As shown, the stress deformation monitoring method for GIL equipment ductwork and compensation unit includes: S100: Construct a three-dimensional finite element model of the target GIL equipment main tube and compensation unit; S200: Real-time acquisition of displacement monitoring data of each segment of the target GIL equipment and its corresponding compensation unit; S300: Input the displacement monitoring data as boundary conditions into the three-dimensional finite element model to calculate the stress and deformation data of the GIL pipe main body and the stress and deformation data of the compensation unit respectively. S400: Visualize the stress deformation data of the GIL tube and the stress deformation data of the compensation unit, and complete the over-limit judgment and early warning notification based on the preset safety threshold.

[0023] In this embodiment, a three-dimensional finite element model matching the structure of the target GIL equipment's main pipe and compensation unit is constructed to provide a precise digital carrier for the numerical simulation analysis of the equipment's stress and deformation. Real-time acquisition of displacement data from each segment of the target GIL equipment's main pipe and corresponding compensation unit yields direct quantitative data of structural deformation during equipment operation. This data serves as the on-site measured boundary condition for the finite element simulation calculation, overcoming the limitations of traditional manual mechanical measuring instruments that lack continuous acquisition capabilities and have low measurement accuracy. The acquired displacement monitoring data is input as boundary conditions into the three-dimensional finite element model for simulation solution, realizing the transformation from directly measurable displacement data to quantitative stress and deformation data of the GIL main pipe and compensation unit that cannot be directly obtained on-site. The system provides precise analysis of the stress deformation state of paired equipment. By visualizing the calculated stress deformation data of the GIL (Gas Injection Line) main unit and the compensation unit, maintenance personnel can intuitively and comprehensively grasp the stress deformation operating status of the equipment. At the same time, it automatically judges the over-limit of the equipment stress deformation state based on preset safety thresholds. When the judgment result exceeds the threshold, it promptly generates and sends an early warning notification, realizing the automatic identification and timely alarm of stress deformation anomalies in the GIL equipment main unit and compensation unit. This provides accurate quantitative data support and efficient risk warning for the safe and stable operation of the GIL equipment main unit and compensation unit, solving the technical problems of traditional monitoring methods that cannot perform quantitative analysis of equipment stress deformation, lack memory function, and cannot issue over-limit alarm signals.

[0024] Furthermore, in one embodiment, S100 includes the following steps: S101: Create a three-dimensional geometric solid model of the target GIL equipment main tube and compensation unit; S102: Assign material property parameters corresponding to the structure to the three-dimensional geometric solid model; S103: Mesh the three-dimensional geometric solid model with assigned material properties to generate the corresponding three-dimensional finite element model.

[0025] In this embodiment, a three-dimensional geometric solid model of the target GIL equipment's main pipe and compensation unit is created to completely replicate the actual structural form and assembly relationship of the equipment. Then, matching material property parameters are assigned to each corresponding structure of the three-dimensional geometric solid model, so that the digital model has the same material mechanical properties as the physical equipment. Finally, the three-dimensional geometric solid model with assigned material properties is meshed, and the continuous solid structure is discretized into a standardized element system that can be numerically solved. This generates a three-dimensional finite element model that is highly consistent with the target GIL equipment's main pipe and compensation unit, allowing the model to accurately reproduce the structure and intrinsic material properties of the equipment. From the model construction level, the basic accuracy of subsequent stress deformation simulation calculations is guaranteed, providing a suitable and accurate digital analysis carrier for subsequent input of displacement monitoring data to carry out stress deformation numerical solutions, and avoiding simulation calculation deviations caused by inconsistencies between the model and the physical equipment.

[0026] Furthermore, in one embodiment, step S200 includes the following steps: S201: Displacement sensing units are installed at the sliding support positions of each section of the target GIL equipment and at the movable connection positions of the compensation units. S202: The displacement sensing unit collects displacement data of each segment of the main tube and displacement data of the sliding support of the compensation unit in real time, and generates corresponding displacement monitoring data.

[0027] In this embodiment, displacement sensing units are strategically deployed at the sliding support positions of each segment of the target GIL equipment and the movable connection positions of the compensation unit. This accurately anchors the core feature acquisition points for equipment deformation, ensuring that the displacement data acquisition matches the key areas of the actual stress deformation of the equipment. The deployed displacement sensing units then collect and integrate the displacement data of each segment of the GIL equipment and the sliding support of the compensation unit in real time to generate corresponding displacement monitoring data. This achieves online continuous acquisition of the deformation displacement of the GIL equipment's pipes and compensation units, abandoning the traditional manual on-site observation and recording monitoring method. This eliminates the human error and data discontinuity problems caused by manual measurement, providing continuous, accurate, and measured data support that closely matches the actual operating state of the equipment for subsequent stress deformation calculations using displacement monitoring data as boundary conditions input into the three-dimensional finite element model. This ensures the authenticity and effectiveness of the input data for subsequent simulation calculations.

[0028] Furthermore, in one embodiment, step S300 includes the following steps: S301: Using the collected displacement monitoring data and the self-weight load of the GIL equipment pipe busbar as core boundary conditions, set corresponding constraint conditions for the three-dimensional finite element model; S302: Based on the three-dimensional finite element model, complete the coupled calculation of the gravity field and stress field, and output the equivalent stress data and deformation data of each segment of the main tube, and the equivalent stress data and displacement deformation data of each compensation unit.

[0029] In this embodiment, the collected displacement monitoring data and the self-weight load of the GIL equipment's main pipe are integrated into the three-dimensional finite element model as core boundary conditions. Corresponding constraints are set for the model, ensuring that the load and constraint settings of the model closely match the actual operating conditions of the GIL equipment's main pipe and compensation units. This accurately restores the true stress and constraint state of the equipment. Based on this three-dimensional finite element model, the coupled calculation of the gravity field and stress field is completed. Relying on the finite element numerical solution method, the precise analysis of the stress deformation of the entire equipment structure is achieved. The equivalent stress and deformation data of each segment of the main pipe and the equivalent stress and displacement deformation data of each compensation unit are output respectively. This achieves an effective conversion from the boundary data measured on-site to the stress deformation quantitative data of the core components of the equipment that cannot be directly measured. The specific stress deformation state of each segment of the main pipe and each compensation unit is accurately obtained, providing accurate and comprehensive numerical calculation results to support subsequent visualization of equipment stress deformation, limit judgment, and safety assessment. This avoids the problem of calculation results that do not match the actual operating state of the equipment caused by single load analysis.

[0030] Furthermore, in one embodiment, S400 includes the following steps: S401: Set the safety threshold for stress deformation of the GIL tube main and the safety threshold for displacement deformation of the compensation unit respectively; S402: Compare the calculated stress deformation data of the GIL tube with the corresponding safety threshold, and compare the stress deformation data of the compensation unit with the corresponding safety threshold. S403: When any comparison result exceeds the corresponding security threshold, a corresponding warning message is generated and a warning notification is sent to the operation and maintenance terminal.

[0031] In this embodiment, corresponding safety thresholds for stress deformation of the GIL jack and displacement deformation of the compensation unit are set according to the structural characteristic differences between the GIL jack and the compensation unit, respectively. This ensures that the safety judgment benchmark is adapted to the operating characteristics of the two types of core components. Then, the stress deformation data of the GIL jack and the compensation unit obtained from simulation calculations are accurately compared with the corresponding preset safety thresholds to achieve automated quantitative judgment of the stress deformation state of the GIL equipment jack and compensation unit. When any comparison result exceeds the corresponding safety threshold, an early warning message matching the abnormal state is generated immediately and an early warning notification is sent to the operation and maintenance end. This method abandons the traditional method of manually observing and judging the equipment status on-site, eliminates the subjectivity and lag problems of manual judgment, and realizes automatic identification and timely alarm of equipment stress deformation anomalies. This allows operation and maintenance personnel to grasp the abnormal status of the equipment and corresponding information as soon as possible, providing timely and accurate information support for subsequent rapid equipment fault investigation and risk handling, and preventing the continuous development of abnormal equipment status from causing structural damage and other safety failures.

[0032] Furthermore, in one embodiment, the method further includes the following steps: S500: Based on the calculated stress and deformation data of each segment of the main tube and the stress and deformation data of each compensation unit, a structural safety assessment is conducted on the main tube and compensation unit of the target GIL equipment. The judgment logic of the structural safety assessment includes: S501: If the equivalent stress value in the stress deformation data of one of the pipe segments exceeds the yield strength threshold of the corresponding material, it is determined that the pipe segment has the risk of plastic deformation and cracking. S502: If the displacement deformation value in the stress deformation data of one of the compensation units exceeds the maximum allowable shrinkage threshold of its structure, the compensation unit is deemed to have a risk of structural damage.

[0033] In this embodiment, based on the stress and deformation data of each segment of the main pipe and the stress and deformation data of each compensation unit obtained from simulation calculations, a targeted structural safety assessment is conducted on the main pipe and compensation units of the target GIL equipment. Relying on a dedicated judgment logic tailored to the structural characteristics of the core components of the adapted equipment, a precise quantitative determination of the safety status of each component is achieved. Specifically, risk assessment is based on the comparison between the equivalent stress value in the stress and deformation data of each segment of the main pipe and the corresponding material yield strength threshold. If the equivalent stress value of any segment of the main pipe exceeds the yield strength threshold of the corresponding material, it is accurately determined that the segment of the main pipe has a risk of plastic deformation and cracking. Simultaneously, the displacement deformation value in the stress and deformation data of each compensation unit is also considered. Risk assessment is performed by comparing the result with the maximum allowable shrinkage threshold of its structure. If the displacement deformation value of any compensation unit exceeds the maximum allowable shrinkage threshold of its structure, it is accurately determined that the compensation unit has a risk of structural damage. This enables the individual identification and precise location of safety risks for each segment of the main pipe and each compensation unit, abandoning the traditional equipment status assessment method without quantitative basis. It provides clear quantitative basis for the safety status assessment of GIL equipment main pipes and compensation units, accurately identifies potential structural risks of core equipment components, and provides reliable decision support for maintenance personnel to carry out targeted equipment maintenance and risk management, avoiding the expansion of equipment operation failures due to ambiguous risk identification and inaccurate location.

[0034] Furthermore, in one embodiment, S600 is further included, which includes the following steps: S601: Store and analyze the continuously collected displacement monitoring data and the corresponding calculated stress deformation data to generate stress deformation development trend curves for the GIL equipment main tube and compensation unit. S602: Based on the stress deformation development trend curve, predict the potential structural risks of the GIL equipment main tube and compensation unit, and output the corresponding prediction results.

[0035] In this embodiment, continuously collected displacement monitoring data and corresponding calculated stress deformation data are uniformly stored and trend analyzed. By analyzing the dynamic change patterns of the data, stress deformation development trend curves corresponding to the GIL equipment main tube and compensation unit are generated. Based on these stress deformation development trend curves, potential structural risks of the GIL equipment main tube and compensation unit are proactively predicted, and prediction results matching the actual deformation development trend of the equipment are output. This enables the pre-identification of equipment structural risks, abandoning the traditional mode that can only alarm for abnormal states that have already occurred in the equipment. It provides accurate trend data support for maintenance personnel to carry out preventive equipment maintenance and risk control, allowing maintenance personnel to grasp the changing trend of equipment stress deformation in advance and take timely and targeted prevention and control measures, effectively reducing the probability of equipment failure caused by the continuous development of potential structural risks.

[0036] On the other hand, embodiments of this application also provide a stress deformation monitoring device and method for GIL equipment ductwork and compensation unit, such as Figure 2 As shown, the stress and deformation monitoring method for GIL equipment ductwork and compensation units takes segmented ductwork 1 and compensation unit 2 as the core monitoring objects, fixed support 3 as the constraint reference, and displacement sensing unit 4 as the data acquisition carrier. It covers the entire process of digital modeling, material property assignment, boundary condition setting, stress analysis, result comparison, and safety assessment. The specific implementation steps are as follows: Step 1: Establish a three-dimensional geometric model of the GIL equipment's main pipe and compensation unit structure. Based on the actual engineering design drawings and on-site installation data of the GIL equipment, a three-dimensional geometric model is created, including all components such as segmented busbar 1, compensation unit 2, fixed support 3, busbar cylinder, sliding support, insulating basin, bolts, and nuts, to completely replicate the actual structure and assembly relationship of the equipment. The solid model can be created using dedicated CAD software such as Solidworks, and then imported into the finite element analysis software via a data interface. After geometric correction, the model is meshed and established. Alternatively, the model can be created in dedicated CAE software such as Workbench, and the node and element data can be imported into the finite element analysis software, laying the foundation for all subsequent simulation analyses.

[0037] Step 2: Assigning Material Properties and Meshing The key physical and mechanical parameters of the materials used in the segmented main pipe 1, compensation unit 2 and each auxiliary structure are clearly defined, including specific heat capacity, coefficient of linear expansion, thermal conductivity, density, elastic modulus, Poisson's ratio and yield strength, etc., and the corresponding structures in the three-dimensional geometric model are assigned matching material property parameters to ensure that the subsequent simulation analysis results are consistent with the actual state of the equipment. The cylindrical structure of segmented tube 1 is divided using a hexahedral mesh, while the shell model is divided using a quadrilateral mesh during calculation. Through a reasonable meshing strategy, the accuracy and computational efficiency of stress deformation simulation analysis of segmented tube 1 and compensation unit 2 are improved.

[0038] Step 3: Determine boundary conditions Based on the actual operating conditions of the GIL equipment, core boundary conditions and constraints are set to fully restore the actual stress and constraint states of segmented pipe bus 1 and compensation unit 2: The displacement data of the sliding supports at each segment of the pipe 1 and each compensation unit 2, measured online by the displacement sensing unit 4, and the gravity of the segment of the vertical pipe 1 are used as the core boundary conditions. When setting the constraints, the influence of other self-weights on the equipment is considered; that is, not only the gravity of the segment of the vertical pipe 1 is considered, but also the self-weight of components such as the segment of the horizontal pipe 1 and the compensation unit 2 are taken into account in the overall working condition. For example, Figure 2As shown, only the displacement sensing unit 4 measures the displacement of the segmented pipe 1 at the 90° corner, and the sliding support component that provides the sliding support is not shown. Figure 2 Exhibited in China; The connection position between the fixed support 3 and the segmented busbar 1 is set as a fixed constraint; the sliding direction degree of freedom is released at the sliding support of the segmented busbar 1, while other degrees of freedom are constrained; the influence of the self-weight of each component of the GIL equipment on the segmented busbar 1 and the compensation unit 2 is fully considered, and the rated internal pressure of sulfur hexafluoride gas in the busbar housing of the segmented busbar 1 is set as a fixed constraint condition.

[0039] Step 4: Stress Analysis Stress analysis is the core component of the monitoring method, and it is implemented in two key steps. First, the coupled calculation of the gravity field and stress field is performed on segmented pipe 1 and compensation unit 2 to accurately obtain the stress distribution state of both. Combining the material gravity parameters of each component in the full model, the completed mesh generation results, and the equipment operating load, the gravity field is solved based on the complete three-dimensional geometric model including the vertical section + horizontal section segmented pipe 1 and compensation unit 2. The gravity field distribution of the vertical section of the model is calculated in detail to restore the basic deformation and stress distribution caused by the self-weight of the vertical section segmented pipe 1. The gravity fields of the horizontal section segmented pipe 1 and compensation unit 2 are included in the calculation simultaneously with the full model solution to comprehensively restore the basic influence of their self-weight on the overall stress deformation of the equipment. Based on the completed full-model gravity field foundation load data (including core results for the vertical segment), the general element type adapted for foundation load calculation in the model is converted into a structural mechanics-specific element type adapted for precise mechanical analysis. Then, the mechanical parameters of segmented pipe 1 and compensation unit 2, the mechanical load of equipment operation, the foundation gravity load and initial stress calculated from the vertical segment gravity field are combined with the real-time dimensions of segmented pipe 1 and compensation unit 2 measured by displacement sensing unit 4, and integrated into a composite load including the foundation gravity load, which is then loaded onto the converted three-dimensional geometric model. Finally, based on the complete model loaded with this composite load, the global stress field is solved, and the global stress data of segmented pipe 1 (vertical segment + horizontal segment) and compensation unit 2 are obtained.

[0040] Step 5: Viewing stress and displacement results The stress and displacement results obtained from finite element simulation analysis are compared and analyzed with the rated design thresholds of segmented pipe bus 1 and compensation unit 2 to provide direct and quantitative data support for subsequent safety assessment. The stress results obtained from the finite element analysis are compared with the maximum equivalent stress allowable value of the structural busbar cylinder of segmented tube 1 and compensation unit 2. The displacement deformation results obtained from the analysis are compared with the rated shrinkage range of segmented pipe 1 and compensation unit 2.

[0041] Step 6: Real-time monitoring and security assessment Based on the comparative data of the stress and displacement results, the maintenance personnel conduct real-time monitoring and comprehensive safety assessment of the structural status of segmented pipe bus 1 and compensation unit 2, and set three core quantitative judgment rules. If any rule is met, it is determined that segmented pipe bus 1 or compensation unit 2 has a safety hazard; otherwise, it is determined that the equipment is in a safe operating state. If the measured shrinkage of segmented pipe 1 and compensation unit 2 by displacement sensing unit 4 is greater than the maximum allowable value of their deformation, it is determined that segmented pipe 1 and compensation unit 2 are at risk of deformation or even cracking. If the equivalent stress values ​​of segmented pipe bus 1 and compensation unit 2 obtained from finite element simulation are greater than the yield strength of their respective pipeline structure materials, it is determined that segmented pipe bus 1 or compensation unit 2 has undergone plastic deformation, which is prone to structural cracking and poses a safety hazard. If the displacement and deformation values ​​of segmented pipe 1 and compensation unit 2 obtained from finite element simulation are greater than their respective structural design shrinkage values, it is determined that the deformation of segmented pipe 1 or compensation unit 2 exceeds the structural safety bearing capacity, which is prone to cracking safety risk; to make up for the defects of local monitoring by sensors, which can only measure the displacement of the deployed points, while the simulated displacement and deformation values ​​can reflect the deformation of parts such as the cylinder section of segmented pipe 1 and the corrugated pipe of compensation unit 2 that are not equipped with sensors, thus avoiding the omission of cases where the displacement of the deployed points is not excessive, but the deformation of other parts has exceeded the standard.

[0042] Secondly, this application also provides a stress deformation monitoring device for GIL equipment main pipe and compensation unit. The GIL equipment main pipe and compensation unit stress deformation monitoring device includes: a model construction module, which is used to construct a three-dimensional finite element model of the target GIL equipment main pipe and compensation unit; a data acquisition module, which is used to collect displacement monitoring data of each segment of the target GIL equipment main pipe and corresponding compensation unit in real time; a stress calculation module, which is used to input the displacement monitoring data as boundary conditions into the three-dimensional finite element model to calculate the stress deformation data of the GIL main pipe and the stress deformation data of the compensation unit respectively; and a display and early warning module, which is used to visualize the stress deformation data of the GIL main pipe and the stress deformation data of the compensation unit, and complete the over-limit judgment and early warning notification based on a preset safety threshold.

[0043] The functions of each module in the stress deformation monitoring device for the GIL equipment tube busbar and compensation unit correspond to the steps in the embodiment of the stress deformation monitoring method for the GIL equipment tube busbar and compensation unit. Their functions and implementation processes will not be described in detail here.

[0044] Thirdly, embodiments of this application provide a stress deformation monitoring device for GIL equipment tube busbars and compensation units. The stress deformation monitoring device for GIL equipment tube busbars and compensation units can be a personal computer (PC), laptop computer, server, or other device with data processing capabilities.

[0045] Reference Figure 3 , Figure 3 This is a schematic diagram of the hardware structure of the stress deformation monitoring device for the GIL device mainframe and compensation unit involved in the embodiments of this application. In this embodiment, the stress deformation monitoring device for the GIL device mainframe and compensation unit may include a processor, a memory, a communication interface, and a communication bus.

[0046] The communication bus can be of any type and is used to interconnect the processor, memory, and communication interface.

[0047] The communication interface includes input / output (I / O) interfaces, physical interfaces, and logical interfaces. These interfaces enable interconnection of components within the GIL device's main unit and compensation unit stress deformation monitoring equipment, as well as interfaces for interconnection between the GIL device's main unit and compensation unit stress deformation monitoring equipment and other devices (such as other computing devices or user equipment). Physical interfaces can be Ethernet interfaces, fiber optic interfaces, ATM interfaces, etc.; user equipment can be displays, keyboards, etc.

[0048] Memory can be various types of storage media, such as random access memory (RAM), read-only memory (ROM), non-volatile RAM (NVRAM), flash memory, optical storage, hard disk, programmable ROM (PROM), erasable PROM (EPROM), electrically erasable PROM (EEPROM), etc.

[0049] The processor can be a general-purpose processor, which can call the GIL device mainframe and compensation unit stress deformation monitoring program stored in the memory and execute the GIL device mainframe and compensation unit stress deformation monitoring method provided in the embodiments of this application. For example, the general-purpose processor can be a central processing unit (CPU). The method executed when the GIL device mainframe and compensation unit stress deformation monitoring program is called can refer to the various embodiments of the GIL device mainframe and compensation unit stress deformation monitoring method of this application, and will not be repeated here.

[0050] Those skilled in the art will understand that Figure 3 The hardware structure shown does not constitute a limitation of this application and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0051] Fourthly, embodiments of this application also provide a readable storage medium.

[0052] The present application stores a GIL device tube bus and compensation unit stress deformation monitoring program on a readable storage medium, wherein when the GIL device tube bus and compensation unit stress deformation monitoring program is executed by a processor, the steps of the GIL device tube bus and compensation unit stress deformation monitoring method described above are implemented.

[0053] The method implemented when the stress deformation monitoring program for the GIL equipment tube busbar and compensation unit is executed can be referred to in various embodiments of the stress deformation monitoring method for the GIL equipment tube busbar and compensation unit of this application, and will not be repeated here.

[0054] It should be noted that the sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0055] The terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such process, method, product, or apparatus. The terms "first," "second," and "third," etc., are used to distinguish different objects, etc., and do not indicate a sequence, nor do they limit "first," "second," and "third" to different types.

[0056] In the description of the embodiments of this application, terms such as "exemplary," "for example," or "for instance" are used to indicate examples, illustrations, or explanations. Any embodiment or design described as "exemplary," "for example," or "for instance" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary," "for example," or "for instance" is intended to present the relevant concepts in a concrete manner.

[0057] In the description of the embodiments of this application, unless otherwise stated, " / " means "or". For example, A / B can mean A or B. The "and / or" in the text is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of this application, "multiple" means two or more.

[0058] In some processes described in the embodiments of this application, multiple operations or steps are included in a specific order. However, it should be understood that these operations or steps may not be executed in the order they appear in the embodiments of this application, or they may be executed in parallel. The sequence number of the operation is only used to distinguish different operations, and the sequence number itself does not represent any execution order. In addition, these processes may include more or fewer operations, and these operations or steps may be executed sequentially or in parallel, and these operations or steps may be combined.

[0059] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes several instructions to cause a terminal device to execute the methods described in the various embodiments of this application.

[0060] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A method for monitoring stress deformation of the ductwork and compensation unit in GIL equipment, characterized in that, The method for monitoring stress deformation of the GIL equipment duct and compensation unit includes: Construct a three-dimensional finite element model of the target GIL equipment main tube and compensation unit; Real-time displacement monitoring data of each segment of the target GIL equipment and its corresponding compensation unit are collected; The displacement monitoring data is input into the three-dimensional finite element model as boundary conditions, and the stress deformation data of the GIL pipe main body and the stress deformation data of the compensation unit are calculated respectively. The stress deformation data of the GIL tube main and the stress deformation data of the compensation unit are visualized and displayed, and the over-limit judgment and early warning notification are completed based on the preset safety threshold.

2. The method for monitoring stress deformation of GIL equipment ductwork and compensation unit as described in claim 1, characterized in that, The construction of the three-dimensional finite element model of the target GIL equipment pipe bus and compensation unit includes: Create a three-dimensional geometric solid model of the target GIL equipment's main pipe and compensation unit; Assign material property parameters corresponding to the structure to the three-dimensional geometric solid model; The three-dimensional geometric solid model with assigned material properties is meshed to generate the corresponding three-dimensional finite element model.

3. The method for monitoring stress deformation of the GIL equipment nut and compensation unit as described in claim 1, characterized in that, The real-time acquisition of displacement monitoring data for each segment of the target GIL equipment and its corresponding compensation unit includes: Displacement sensing units are installed at the sliding support positions of each section of the target GIL equipment and at the movable connection positions of the compensation units. The displacement sensing unit collects displacement data of each segment of the main tube and displacement data of the sliding support of the compensation unit in real time, and generates corresponding displacement monitoring data.

4. The method for monitoring stress deformation of the GIL equipment liner and compensation unit as described in claim 1, characterized in that, The displacement monitoring data is input as boundary conditions into the three-dimensional finite element model to calculate the stress and deformation data of the GIL pipe main and the stress and deformation data of the compensation unit, respectively, including: The collected displacement monitoring data and the self-weight load of the GIL equipment pipe busbar are used as core boundary conditions to set corresponding constraint conditions for the three-dimensional finite element model. Based on the three-dimensional finite element model, the coupled calculation of the gravity field and stress field is completed, and the equivalent stress data and deformation data of each segment of the main tube, and the equivalent stress data and displacement deformation data of each compensation unit are output respectively.

5. The method for monitoring stress deformation of the GIL equipment nut and compensation unit as described in claim 1, characterized in that, The process of determining and issuing warnings based on preset safety thresholds includes: Set the safety threshold for stress deformation of the GIL tube and the safety threshold for displacement deformation of the compensation unit respectively; Compare the calculated stress deformation data of each segment of the main pipe with the corresponding safety threshold, and compare the stress deformation data of each compensation unit with the corresponding safety threshold. When any comparison result exceeds the corresponding security threshold, a corresponding warning message is generated and a warning notification is sent to the operation and maintenance department.

6. The method for monitoring stress deformation of the GIL equipment duct and compensation unit as described in claim 1, characterized in that, It also includes the following steps: Based on the calculated stress and deformation data of each segment of the main tube and the stress and deformation data of each compensation unit, a structural safety assessment of the main tube and compensation unit of the target GIL equipment is conducted. If the equivalent stress value in the stress deformation data of one of the pipe segments exceeds the yield strength threshold of the corresponding material, it is determined that the pipe segment has the risk of plastic deformation and cracking. If the displacement deformation value in the stress deformation data of one of the compensation units exceeds the maximum allowable shrinkage threshold of its structure, the compensation unit is deemed to have a risk of structural damage.

7. The method for monitoring stress deformation of the GIL equipment nut and compensation unit as described in claim 1, characterized in that, It also includes the following steps: The continuously collected displacement monitoring data and the corresponding calculated stress deformation data are stored and trend analyzed to generate stress deformation development trend curves for the GIL equipment main tube and compensation unit. Based on the stress-deformation development trend curve, the potential structural risks of the GIL equipment main tube and compensation unit are predicted, and the corresponding prediction results are output.

8. A stress deformation monitoring device for a GIL (Gas Inertial Isolation) equipment liner and compensation unit, characterized in that, The stress deformation monitoring device for the GIL equipment duct and compensation unit includes: The model building module is used to construct a three-dimensional finite element model of the target GIL equipment main tube and compensation unit; The data acquisition module is used to collect displacement monitoring data of each segment of the target GIL equipment and its corresponding compensation unit in real time. The stress calculation module is used to input the displacement monitoring data as boundary conditions into the three-dimensional finite element model and calculate the stress deformation data of the GIL pipe main body and the stress deformation data of the compensation unit, respectively. The display and early warning module is used to visualize the stress deformation data of the GIL tube and the stress deformation data of the compensation unit, and to complete the over-limit judgment and early warning notification based on the preset safety threshold.

9. A stress deformation monitoring device for a GIL (Gas Inertial Isolation) equipment nut and compensation unit, characterized in that, The GIL equipment tube bus and compensation unit stress deformation monitoring device includes a processor, a memory, and a GIL equipment tube bus and compensation unit stress deformation monitoring program stored in the memory and executable by the processor. When the GIL equipment tube bus and compensation unit stress deformation monitoring program is executed by the processor, it implements the steps of the GIL equipment tube bus and compensation unit stress deformation monitoring method as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a stress deformation monitoring program for GIL equipment tube busbars and compensation units, wherein when the GIL equipment tube busbars and compensation units stress deformation monitoring program is executed by a processor, it implements the steps of the stress deformation monitoring method for GIL equipment tube busbars and compensation units as described in any one of claims 1 to 7.

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