A device and method for substation equipment maintenance training

Abstract

The present invention discloses a device and method for substation equipment maintenance training, which relates to the technical field of simulators; the device includes a module for obtaining a substation equipment model, which is used to obtain a data set of self-similar features after fracturing the substation equipment and form a self-similar structure, model based on the self-similar structure of the substation equipment and obtain a fractal model of the substation equipment; obtain a motion model of the substation equipment based on the particle system and the fractal model of the substation equipment, and the model of the substation equipment includes the fractal model and the motion model of the substation equipment; the method includes the step of obtaining a substation equipment model: obtaining a data set of self-similar features after fracturing the substation equipment and forming a self-similar structure, modeling based on the self-similar structure of the substation equipment and obtaining a fractal model of the substation equipment; obtaining a motion model of the substation equipment based on the particle system and the fractal model of the substation equipment; through the fractal model and the motion model of the substation equipment, etc., it is possible to see the internal details of the virtual equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of simulators, and particularly to a device and method for substation equipment maintenance training. Background Art

[0002] The writer conducted a search with the search formula TACD_ALL: (substation equipment AND training AND particle), and obtained the following prior art solutions that are relatively close.

[0003] The application publication number is CN103065513A, and the name is a three-dimensional virtual training system for substation equipment. The three-dimensional virtual training system for substation equipment includes a central processing device. The central processing device is connected to a PC terminal through a data bus, and the central processor is connected to a remote receiving terminal through a network module. It realizes three-dimensional stereoscopic space virtual training of substation equipment and components, enables maintenance, operation, and test personnel to quickly master the structure and performance of substation equipment, accurately locates the status information to the actual substation equipment components, accurately locates the discovered status information to the actual substation equipment components, improves the authenticity and accuracy of substation equipment status evaluation, realizes full-staff, all-round, and whole-process status evaluation, greatly improves the refined management level of substation equipment components, and creates a brand-new training mode for cultivating compound maintenance personnel. And it can realize remote training and education.

[0004] The application publication number is CN112489513A, and the name is a system and method for virtual training of substation industry equipment. By constructing a real working environment and real working equipment through a virtual reality simulation training system, and designing real working faults, trainees can obtain the same working experience as front-line power workers in the virtual environment, strengthening the training effect. At the same time, because it is in a virtual environment, there will never be the same working hazards, achieving the teaching purpose of grasping both training and safety, being able to improve the understanding of power working environments and high-voltage substation equipment by power professional trainees, and ensuring the life safety of power professional trainees during the training process.

[0005] The application publication number is CN113920796A, and the name is an immersive substation switching operation training behavior evaluation method and system. Based on the training scenario simulation module, a static scenario during substation switching operation training is constructed. Through the operation task dynamic display module, the training actions of the operator are implanted into the static scenario during the substation switching operation training, realizing the virtual combination of static and dynamic. Through the score evaluation and action classification module, deep learning pre-training and correction training are carried out to obtain a suitable training behavior score evaluation model. Based on the training behavior score evaluation model, the training actions are classified according to the proportion of operation errors, which is convenient for teaching staff to conduct targeted teaching according to the action classification. At the same time, it is also convenient for teaching staff to identify the frequent error actions of specific trainees and conduct precise training on the specific trainees.

[0006] Combined with the above three patent documents and the existing technical solutions, the inventor analyzes the existing technical solutions as follows.

[0007] Large equipment, dangerous equipment, complex equipment that is difficult to operate, and equipment whose internal details are not easily visible.

[0008] Existing technical problems and considerations:

[0009] How to solve the technical problem that the trainees or the evaluated personnel cannot see the internal details of the virtual equipment. Summary of the Invention

[0010] The present invention provides a device and method for substation equipment maintenance training to solve the technical problem of not being able to see the internal details of the virtual equipment.

[0011] To solve the above technical problems, the technical solutions adopted by the present invention are as follows: A device for substation equipment maintenance training includes a module for obtaining a substation equipment model, which is used to obtain a dataset of the self-similar features after fracturing the substation equipment and form a self-similar structure, and model based on the self-similar structure of the substation equipment to obtain a fractal model of the substation equipment; obtain a motion model of the substation equipment based on the particle system and the fractal model of the substation equipment. The model of the substation equipment includes the fractal model and the motion model of the substation equipment.

[0012] A further technical solution is that the module for obtaining a substation equipment model is also used for the substation equipment including the disconnector body, the disconnector main knife system, the recovery device, the circuit breaker, the vacuum interrupter of the switchgear, the secondary circuit of the combined electrical apparatus, the on-load tap-changer, the secondary circuit of the air-cooling control box, the capacitive bushing, the transformer cover lifting, and the secondary circuit of the on-load tap-changer.

[0013] A further technical solution is that it further includes a training module, which is used to perform simulation based on the obtained model of the substation equipment to realize training.

[0014] A further technical solution is to also include an assessment module for implementing assessment based on the obtained model of the substation equipment and a built-in question bank.

[0015] A further technical solution is that it also includes a training module and an assessment module, and the training module and the assessment module form a training assessment module, which specifically includes the following modules:

[0016] The disconnector maintenance module is used to obtain the fractal model and motion model of the disconnector, with a built-in question bank;

[0017] The main operating system maintenance module of the isolating switch is used to obtain the fractal model and motion model of the main operating system of the isolating switch, with a built-in question bank;

[0018] The gas recovery module of the recovery device is used to obtain the fractal model and motion model of the recovery device and the fractal model and motion model of the gas, with a built-in question bank;

[0019] Circuit breaker maintenance module, used to obtain the fractal model and motion model of the circuit breaker, with a built-in question bank;

[0020] Switchgear vacuum interrupter replacement module, used to obtain the fractal model and motion model of the switchgear vacuum interrupter, with a built-in question bank;

[0021] Combined electrical equipment secondary circuit fault elimination module, used to obtain the fractal model and motion model of the combined electrical equipment secondary circuit, with a built-in question bank;

[0022] The on-load switch hanging inspection module is used to obtain the fractal model and motion model of the on-load switch, with a built-in question bank;

[0023] Air-cooled control box secondary circuit fault elimination module, used to obtain the fractal model and motion model of the air-cooled control box secondary circuit, with built-in question bank;

[0024] Capacitor bushing disassembly and maintenance module, used to obtain the fractal model and motion model of the capacitor bushing, with a built-in question bank;

[0025] Transformer cover module, used to obtain the fractal model and motion model of the transformer cover, with a built-in question bank;

[0026] The on-load tapchanger secondary circuit fault elimination module is used to obtain the fractal model and motion model of the on-load tapchanger secondary circuit, and has a built-in question bank.

[0027] A method for substation equipment maintenance training includes the following steps, the step of obtaining the substation equipment model: obtaining a data set of self-similar features after fracturing the substation equipment and forming a self-similar structure, modeling based on the self-similar structure of the substation equipment and obtaining the fractal model of the substation equipment; obtaining the motion model of the substation equipment based on the particle system and the fractal model of the substation equipment, and the model of the substation equipment includes the fractal model and the motion model of the substation equipment.

[0028] A further technical solution lies in: it further includes the training step, simulating based on the obtained model of the substation equipment to realize the training.

[0029] A further technical solution lies in: it further includes the assessment step, realizing the assessment based on the obtained model of the substation equipment and an in-built question bank.

[0030] A device for substation equipment maintenance training includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it realizes the corresponding steps in the above method.

[0031] A device for substation equipment maintenance training includes a computer-readable storage medium. The computer-readable storage medium stores a computer program, and when the computer program is executed by the processor, it realizes the corresponding steps in the above method.

[0032] The beneficial effects produced by adopting the above technical solutions are as follows:

[0033] First, a device for substation equipment maintenance training includes a module for obtaining the substation equipment model, which is used for obtaining a data set of self-similar features after fracturing the substation equipment and forming a self-similar structure, modeling based on the self-similar structure of the substation equipment and obtaining the fractal model of the substation equipment; obtaining the motion model of the substation equipment based on the particle system and the fractal model of the substation equipment, and the model of the substation equipment includes the fractal model and the motion model of the substation equipment. With this technical solution, it is possible to see the internal details of the virtual equipment through the fractal model and the motion model of the substation equipment, etc.

[0034] Second, a method for substation equipment maintenance training includes the following steps, the step of obtaining the substation equipment model: obtaining a data set of self-similar features after fracturing the substation equipment and forming a self-similar structure, modeling based on the self-similar structure of the substation equipment and obtaining the fractal model of the substation equipment; obtaining the motion model of the substation equipment based on the particle system and the fractal model of the substation equipment, and the model of the substation equipment includes the fractal model and the motion model of the substation equipment. With this technical solution, it is possible to see the internal details of the virtual equipment through the fractal model and the motion model of the substation equipment, etc.

[0035] See the description in the specific implementation part for details. Description of the Drawings

[0036] Figure 1 is the principle block diagram of Embodiment 1 of the present invention;

[0037] Figure 2 is the flowchart of Embodiment 2 of the present invention;

[0038] Figure 3 is the principle block diagram of Embodiment 4 of the present invention;

[0039] Figure 4 is the principle block diagram of Embodiment 5 of the present invention;

[0040] Figure 5 is the task decomposition diagram;

[0041] Figure 6 is the effect diagram. Detailed implementation manners

[0042] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way restrictive of the present application and its application or use. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the scope of protection of the present application.

[0043] Many specific details are set forth in the following description in order to provide a thorough understanding of the present application, but the present application may be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0044] Embodiment 1:

[0045] As Figure 1 shown, the present invention discloses a device for substation equipment maintenance training, which includes a substation equipment model acquisition module, a training module, and an assessment module, and the training module and the assessment module form a training and assessment module.

[0046] The substation equipment model acquisition module is used to acquire a dataset of self-similar features after fracturing the substation equipment and form a self-similar structure, model based on the self-similar structure of the substation equipment and obtain the fractal model of the substation equipment; obtain the motion model of the substation equipment based on the particle system and the fractal model of the substation equipment. The model of the substation equipment includes the fractal model and the motion model of the substation equipment. The substation equipment includes the disconnector body, the main knife system of the disconnector, the recovery device, the circuit breaker, the vacuum interrupter of the switchgear, the secondary circuit of the combined electrical apparatus, the on-load tap-changer, the secondary circuit of the air-cooling control box, the capacitive bushing, the transformer cover lifting, and the secondary circuit of the on-load tap-changer.

[0047] The training module is used to perform simulations based on the obtained model of the substation equipment to achieve training.

[0048] The assessment module is used to achieve assessment based on the obtained model of the substation equipment and the built-in question bank.

[0049] The training and assessment module specifically includes the following modules:

[0050] The disconnector body maintenance module 1 is used to obtain the fractal model and the motion model of the disconnector and build a question bank.

[0051] The main knife system maintenance module 2 of the disconnector is used to obtain the fractal model and the motion model of the main knife system of the disconnector and build a question bank.

[0052] The gas recovery module 3 of the recovery device is used to obtain the fractal model and the motion model of the recovery device, obtain the fractal model and the motion model of the gas, and build a question bank.

[0053] The circuit breaker maintenance module is used to obtain the fractal model and the motion model of the circuit breaker and build a question bank.

[0054] The vacuum interrupter replacement module 6 of the switchgear is used to obtain the fractal model and the motion model of the vacuum interrupter of the switchgear and build a question bank.

[0055] The defect elimination module 7 of the secondary circuit of the combined electrical apparatus is used to obtain the fractal model and the motion model of the secondary circuit of the combined electrical apparatus and build a question bank.

[0056] The on-load tap-changer lifting inspection module 8 is used to obtain the fractal model and the motion model of the on-load tap-changer and build a question bank.

[0057] The defect elimination module 9 of the secondary circuit of the air-cooling control box is used to obtain the fractal model and the motion model of the secondary circuit of the air-cooling control box and build a question bank.

[0058] The disassembly and maintenance module 10 of the capacitive bushing is used to obtain the fractal model and the motion model of the capacitive bushing and build a question bank.

[0059] Transformer lifting cover module 11, which is used to obtain the fractal model and motion model of the transformer lifting cover and has a built-in question bank.

[0060] On-load tap-changer secondary circuit defect elimination module 12, which is used to obtain the fractal model and motion model of the on-load tap-changer secondary circuit and has a built-in question bank.

[0061] Among them, the structure of the substation equipment itself is prior art, the fractal technology itself is prior art, and the behavior modeling technology itself is prior art, which will not be elaborated here.

[0062] Embodiment 2:

[0063] As Figure 2 shown, the present invention discloses a method for substation equipment maintenance training, which includes the following steps:

[0064] S1 Obtain the substation equipment model

[0065] Obtain the dataset of the self-similar characteristics after fractal of the substation equipment and form a self-similar structure, model based on the self-similar structure of the substation equipment and obtain the fractal model of the substation equipment; obtain the motion model of the substation equipment based on the particle system and the fractal model of the substation equipment. The model of the substation equipment includes the fractal model and the motion model of the substation equipment. The substation equipment includes the disconnector body, the disconnector main knife system, the recovery device, the circuit breaker, the vacuum interrupter of the switchgear, the secondary circuit of the combined electrical apparatus, the on-load switch, the secondary circuit of the air-cooling control box, the capacitive bushing, the transformer lifting cover, and the secondary circuit of the on-load tap-changer.

[0066] S2 Training

[0067] Perform simulation based on the obtained model of the substation equipment to achieve training.

[0068] S3 Assessment

[0069] Based on the obtained model of the substation equipment and the built-in question bank, achieve assessment.

[0070] Embodiment 3:

[0071] The present invention discloses a device for substation equipment maintenance training. The device is an electronic device, and the electronic device includes the modules in the device of Embodiment 1.

[0072] Embodiment 4:

[0073] As Figure 3 shown, the present invention discloses a device for substation equipment maintenance training, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor. The memory and the processor form an electronic terminal. When the processor executes the computer program, the steps in Embodiment 2 are implemented.

[0074] Embodiment 5:

[0075] As Figure 4 shown, the present invention discloses a computer-readable storage medium storing a computer program, and when the computer program is executed by a processor, the steps in Embodiment 2 are implemented.

[0076] Compared with the above embodiment, the program module can also be a hardware module made by using existing logic operation technologies to implement corresponding logic operation steps, communication steps and control steps, and further implement the above corresponding steps. The logic operation unit is the prior art and will not be elaborated herein.

[0077] Research and development process:

[0078] According to the assessment content of the operation question bank for the skill level evaluation of substation equipment maintenance workers, and based on the operation processes and technologies provided by business experts, the skill appraisal and skill training functions for substation equipment maintenance workers are developed using the current mainstream virtual reality engine to meet the five-in-one skill appraisal and skill training requirements of teaching, self-study, practice, assessment, and evaluation for substation equipment maintenance technicians, and to explore a new model for skill level evaluation.

[0079] The basis and criteria for selection in the assessment content are: large equipment, dangerous equipment, complex equipment that is difficult to operate, and equipment with internal details that are not easily visible. Therefore, this is the first time in China in terms of the truly large amount of maintenance content in the real sense. This software will fill the gaps in related fields.

[0080] Technical solution description:

[0081] 1. Major overhaul of the GW4-126 type disconnector body, corresponding to the senior worker level

[0082] It includes the structural cognition and disassembly and assembly maintenance of the equipment. During the maintenance process, the operation of the major overhaul of the body is realized. The assessment function is realized through the built-in question bank, and the vr interaction is realized through the operation of tools during the scene roaming. Using the equipment, real measurement data can be obtained, and the whole model is in full view.

[0083] 2. Maintenance of the main knife system of the GW7-252 type disconnector

[0084] This link has some structural differences from the GW4-126 type disconnector. It also includes the structural cognition and disassembly and assembly maintenance of the equipment. During the maintenance process, the operation of the system maintenance is realized. The assessment function is realized through the built-in question bank, and the vr interaction is realized through the operation of tools during the scene roaming. Using the equipment, real measurement data can be obtained, and the whole model is in full view. At the same time, by comparison, the different operation methods and key and difficult points of different models of equipment can be understood. The equipment is the latest product directly supplied by the manufacturer.

[0085] 3. SF6 gas recovery using a recovery device

[0086] This link has a relatively high risk factor and a relatively high level of work maintenance. By truly restoring the recovery device, its usage method, and the key points of operation during the SF6 gas recovery process, trainees can operate step by step through VR interaction, avoiding misoperations that may occur during actual operation and thus bringing risks. The content of this link maximally reflects the safety of the software.

[0087] 4. Minor repair of LW16 - 40.5 type circuit breaker, corresponding to the senior worker level

[0088] This link demonstrates the repair content of the circuit breaker in substation equipment. It includes the structural recognition and disassembly and assembly repair of the equipment. System repair operations are realized during the repair process. The assessment function is achieved through an internal question bank. VR interaction is realized through the operation of tools during scene roaming. The equipment is used to truly measure data. Usually, this equipment has been inside the outer box and it is difficult to see its detailed content. This link well demonstrates each component, its operation principle, and replacement method.

[0089] 5. Minor repair of LW16 - 40.5 type circuit breaker, corresponding to the senior worker level

[0090] This link demonstrates the repair content of another type of circuit breaker in substation equipment. It includes the structural recognition and disassembly and assembly repair of the equipment. System repair operations are realized during the repair process. The assessment function is achieved through an internal question bank. VR interaction is realized through the operation of tools during scene roaming. The equipment is used to truly measure data. Usually, this equipment has been inside the outer box and it is difficult to see its detailed content. This link well demonstrates each component, its operation principle, and replacement method. At the same time, through comparison, the different operation methods and key points and difficult points of different types of equipment can be understood. The equipment is the latest product directly supplied by the manufacturer.

[0091] 6. Replacement of the vacuum interrupter in the switchgear, corresponding to the senior worker level

[0092] The vacuum interrupter is also inside the equipment, and this content belongs to the content that often needs to be replaced during the repair of the switchgear, with a relatively high frequency.

[0093] It includes the structural recognition and disassembly and assembly repair of the equipment. System repair operations are realized during the repair process. The assessment function is achieved through an internal question bank. VR interaction is realized through the operation of tools during scene roaming. The equipment is used to truly measure data.

[0094] 7. Defect elimination of the secondary circuit of the combined electrical apparatus, corresponding to the senior worker level

[0095] This is the first content section for defect elimination in the secondary circuit of the software. By operating the device buttons and circuits within the operating mechanism, problems in the secondary circuit of the combined electrical apparatus are addressed. The interactivity has the strongest correlation with the relevance of the device content. This section enables the interconnection between the circuit and the actual display content panel. Based on various problems that occur, learning of treatment methods and actual operations can be achieved through this module.

[0096] 8. Hoisting and inspection of on-load tap-changer, corresponding to the senior worker level

[0097] This section involves many components:

[0098] (1) Unscrew the bolts fixing the switch head cover plate, and then remove the switch head cover plate, taking care to protect the sealing washer.

[0099] (2) Check whether the notch on the drive shaft of the change-over switch is aligned with the triangular mark on the support plate.

[0100] (3) Remove the locking piece of the tap position indicator plate, and then remove the tap position indicator plate.

[0101] (4) Remove the nut connecting the change-over switch body and the support plate. Tie a lifting wire to the lifting wire of the change-over switch, and carefully lift the change-over switch body vertically. After lifting out the oil chamber, place it on a platform or flat ground covered with plastic sheeting.

[0102] (5) Remove the oil suction pipe and take it out of the oil chamber.

[0103] (6) Check whether the inside of the change-over switch oil chamber is clean. If not, it should be cleaned.

[0104] (7) Place a special lifting plate horizontally in the oil chamber, making the support flange bear the force to hold the tap-changer. Then unscrew the connecting bolts between the middle flange and the support flange to separate the two.

[0105] (8) Gently lower the lifting plate until the support flange supports the tap-changer on the bracket installed on the body of the apparatus. At this time, the upper tank can be lifted.

[0106] The operation steps and operation details highlighted are an important part of the major overhaul of the transformer.

[0107] 9. Defect elimination in the secondary circuit of the air-cooling control box, corresponding to the senior worker level

[0108] This is the second content section for defect elimination in the secondary circuit of the software. By operating the device buttons and circuits within the operating mechanism, problems in the secondary circuit of the air-cooling control cabinet are addressed. The interactivity has the strongest correlation with the relevance of the device content. This section enables the interconnection between the circuit and the actual display content panel. Based on various problems that occur, learning of treatment methods and actual operations can be achieved through this module.

[0109] 10. Capacitive bushing disassembly, repair and overhaul, corresponding to the senior worker level

[0110] The transformer bushing is an outlet device that leads the high- and low-voltage leads inside the transformer to the outside of the oil tank. As the insulation between the lead and the ground, the bushing also plays the role of fixing the lead. Therefore, it must have the specified electrical and mechanical strength. Since it should not only bear the long-term load current during operation, but also be able to withstand the instantaneous overheating during short circuit, that is, it should have good thermal stability. If there are defects or failures in the transformer bushing, it will directly endanger the safe operation of the transformer and its power supply reliability.

[0111] This is the smallest structural unit in the software, but it is the core of substation equipment. Most products require the overhaul of bushings, including the content of structural cognition and the disassembly and assembly of the internal structure for overhaul.

[0112] 11. Transformer cover lifting, corresponding to the senior worker level

[0113] This link is for the transformer cover lifting operation during the major overhaul of the transformer, and the solid display of the internal structure of the transformer after the cover is lifted.

[0114] It includes the structural cognition and disassembly, repair and overhaul of the equipment. The operation of systematic overhaul is realized during the overhaul process. The assessment function is realized through the built-in question bank. The vr interaction is realized through the operation of tools and roaming in the scene. The equipment is used for oil cleaning and gasket replacement.

[0115] 12. Defect elimination of the on-load tap-changer secondary circuit, corresponding to the senior worker level

[0116] This is the third content section for defect elimination of the secondary circuit in the software. By operating the equipment buttons and circuits inside the operating mechanism, problems in the on-load tap-changer secondary circuit are handled. The interactivity has the strongest correlation with the relevance of the equipment content. This part realizes the interconnection between the circuit and the actual display content panel. According to various problems that occur, the learning of handling methods and actual operations can be realized through this module.

[0117] The theory and practice basis of this software

[0118] Through the perfect integration of simulation hardware equipment and three-dimensional simulation software based on virtual reality technology, the trainees can obtain an almost real training experience of substation operation and maintenance technology in terms of vision, hearing, touch, etc. In addition, the system also adopts various training means such as virtual inspection, virtual detection, fault setting, simulation repair, data query, training management, and online examination to strengthen the safety awareness of the trainees, overcome fear psychology, enhance practical ability, and improve the training effect. The main technical theory and practice basis adopted by the system are as follows:

[0119] Virtual reality technology architecture

[0120] The virtual reality technology used this time is the product of the comprehensive development of technologies such as computer graphics, artificial intelligence, computer networks, and information processing. Virtual reality technology is a simulation of the real world in four-dimensional space-time, that is, a simulation of three-dimensional space and one-dimensional time. The scene is generated by a computer and acts on the human body through vision, hearing, touch, etc., so as to produce an immersive interactive scene simulation. It is a computer system that can create and experience virtual worlds. A complete virtual reality system includes a realistic three-dimensional virtual environment and a human-computer interaction interface that conforms to people's natural interaction habits. A distributed virtual reality system also includes a human-computer interaction interface for sharing information.

[0121] The core technical points of the software

[0122] The core technical point of this project lies in the implementation of the VR simulation software development for substation equipment maintenance workers based on the skill level evaluation system, corresponding to senior substation maintenance workers. In the whole software, it is necessary to truly restore the actual environment where the staff is located and the main equipment they work on in a one-to-one ratio. At the same time, it is relatively rare in China to adopt the production of mainstream equipment with high-precision real-scene three-dimensional. The materials of the product come from equipment manufacturers and actual substations, and the actual operation steps of the operators are simulated step by step according to the actual work content.

[0123] The equipment information was collected in many places such as Shandong, Jiangsu, Inner Mongolia, and Baoding. Through the records of high-definition cameras, in addition to being used as production materials for the project itself, the image data and video data based on images are also of great value.

[0124] A large number of equipment is huge in size, and the operation time of a single unit exceeds 30 minutes. The steps of real simulation operations are carried out, and individual interactive function points are specific to the operation of each screw.

[0125] Modeling technology

[0126] The establishment of the virtual environment of this software is the core content of VR technology. The virtual environment is based on modeling. Only by designing a real and effective model that reflects the research object can the VR system be credible. The purpose of virtual environment modeling is to obtain three-dimensional data of the actual environment and establish a corresponding virtual environment model using the obtained three-dimensional data according to the needs of the application.

[0127] 1 Geometric modeling technology

[0128] The main research object of geometric modeling technology is the representation and processing of the geometric information of objects. It involves data structures for representing geometric information and algorithm modeling methods for constructing and manipulating data structures.

[0129] 2 Physical modeling technology

[0130] Physical modeling is the product of the further development of modeling technology, that is, the physical properties of the object should be considered during modeling. Typical physical modeling technologies include fractal technology and particle systems.

[0131] Fractal technology: Fractal technology refers to the ability to describe data sets with self-similar characteristics. Self-similar structures can be used to model complex irregular-shaped objects; this technology was first used to model the geographical features of rivers and mountains.

[0132] Particle system: A particle system is a typical physical modeling system. A particle system uses simple voxels to complete complex motion modeling; a voxel is the atomic unit used to construct an object, and the selection of voxels determines the range of objects that the modeling system can construct; a particle system consists of a large number of simple voxels called particles, and each particle has attributes such as position, velocity, color, and life cycle, and these attributes can be obtained based on dynamic calculations and random processes; in a VR system, particle systems are often used to describe phenomena such as flames, water flows, rain and snow, whirlwinds, fountains, etc. and to model dynamic objects.

[0133] 3 Behavior modeling technology

[0134] Behavior modeling is responsible for describing the motion and behavior of objects; if geometric modeling is the foundation of VR modeling, behavior modeling truly reflects the characteristics of VR; if an object in a VR system has no behavioral response, then this VR system is static and lifeless, which is meaningless to VR users. Therefore, behavior modeling technology truly reflects the characteristics of VR; behavior modeling technology mainly studies the processing of object motion and the description of its behavior, reflecting the characteristics of modeling in a virtual environment; that is to say, behavior modeling is to endow the model with not only appearance, texture and other performance characteristics, but also physical properties and "inherent" behavior and response capabilities, and to obey certain objective laws when creating the model; in virtual environment behavior modeling, the modeling methods mainly include: kinematics and dynamics simulation methods.

[0135] 4 Specific model parameters

[0136] As Figure 5 shown, the modeling content this time includes 12 sets of related content. The information obtained is the mainstream products in the front line, including:

[0137] The largest equipment exceeds 3 meters in height and 8 meters in length. At the same time, the relevant content is difficult to see usually or within a certain period of time. There are also some dangerous equipment environments among them.

[0138] As Figure 6 shown, the model accuracy reaches a relatively high standard, and there is no difference between the accuracy and the real situation.

[0139] 5 Unity interaction:

[0140] Implement various types of interactions, cognitive functions, disassembly, voice commentary, text commentary, movement functions, viewing functions, operation tools, hands-on operation, assessment, process knowledge explanation, etc. of the content within the scene for the overall training and assessment functions of substation equipment through the Unity software.

[0141] All core content is truly presented in VR. Through the interaction operation of the handle, down to a single screw. The operation accuracy is relatively high, enabling the control of details.

[0142] 6 LAN development:

[0143] Trainees use PCVR for operation learning; LAN operation is convenient to install, and multiple people can interact with the 3D menu and equipment within the scene on multiple devices simultaneously; after the actual operation, the assessment terminal directly displays the score, facilitating trainees to promptly understand the mastery of knowledge points.

[0144] After the internal operation of this application for a period of time, the beneficial points feedback by on-site technical personnel are as follows:

[0145] Equipment with internal details can be seen, so this is the first time for such a large amount of overhaul content in the true sense in China. This software will fill the gap in related fields.

[0146] This software truly restores the work of substation equipment maintenance workers based on the skill level evaluation system through the latest VR virtual simulation technology, including twelve types of substation equipment and their covered equipment function structures, the disassembly and repair work implemented according to the environment, corresponding to senior substation maintenance workers.

[0147] Among them, methods such as click interaction, displacement interaction, simulation operation interaction, parallel display of graphics and sound, question bank operation, key point content prompt, assessment mechanism, etc. are used to integrate all training content into the panoramic world. Trainees can participate in the maintenance work of twelve types of substation equipment at the same location, greatly saving time, manpower, and material resources. It lays a solid foundation for more comprehensive development of relevant education and teaching and practical operations.

[0148] Currently, the technical solution of the present invention has been pilot-tested, that is, a smaller-scale test before large-scale mass production; after the pilot test is completed, user usage research has been carried out on a small scale, and the research results show a relatively high user satisfaction; now it has started to prepare for the formal production and industrialization of the product (including intellectual property risk warning research).

Claims

1. A device for substation equipment maintenance training, characterized in that: It includes a module for obtaining the substation equipment model, which is used to obtain a dataset of the self-similar characteristics after fracturing the substation equipment and form a self-similar structure, model based on the self-similar structure of the substation equipment and obtain the fractal model of the substation equipment; obtain the motion model of the substation equipment based on the particle system and the fractal model of the substation equipment. The model of the substation equipment includes the fractal model and the motion model of the substation equipment; The module for obtaining the substation equipment model is also used for the substation equipment including the disconnector body, the main knife system of the disconnector, the recovery device, the circuit breaker, the vacuum arc extinguishing chamber of the switch cabinet, the secondary circuit of the combined electrical apparatus, the on-load tap-changer, the secondary circuit of the air-cooling control box, the capacitive bushing, the transformer cover lifting, and the secondary circuit of the on-load tap-changer; It also includes a training module and an assessment module. The training module and the assessment module form a training and assessment module, specifically including the following modules: The disconnector body maintenance module is used to obtain the fractal model and the motion model of the disconnector, and has a built-in question bank; The main knife system maintenance module of the disconnector is used to obtain the fractal model and the motion model of the main knife system of the disconnector, and has a built-in question bank; The gas recovery module of the recovery device is used to obtain the fractal model and the motion model of the recovery device, obtain the fractal model and the motion model of the gas, and has a built-in question bank; The circuit breaker maintenance module is used to obtain the fractal model and the motion model of the circuit breaker, and has a built-in question bank; The vacuum arc extinguishing chamber replacement module of the switch cabinet is used to obtain the fractal model and the motion model of the vacuum arc extinguishing chamber of the switch cabinet, and has a built-in question bank; The defect elimination module of the secondary circuit of the combined electrical apparatus is used to obtain the fractal model and the motion model of the secondary circuit of the combined electrical apparatus, and has a built-in question bank; The on-load tap-changer lifting inspection module is used to obtain the fractal model and the motion model of the on-load tap-changer, and has a built-in question bank; The defect elimination module of the secondary circuit of the air-cooling control box is used to obtain the fractal model and the motion model of the secondary circuit of the air-cooling control box, and has a built-in question bank; The disassembly and maintenance module of the capacitive bushing is used to obtain the fractal model and the motion model of the capacitive bushing, and has a built-in question bank; The transformer cover lifting module is used to obtain the fractal model and the motion model of the transformer cover lifting, and has a built-in question bank; The defect elimination module of the secondary circuit of the on-load tap-changer is used to obtain the fractal model and the motion model of the secondary circuit of the on-load tap-changer, and has a built-in question bank.

2. The device for substation equipment maintenance training according to claim 1, characterized in that: It also includes a training module, which is used to perform simulation based on the obtained model of the substation equipment to achieve training.

3. The device for substation equipment maintenance training according to claim 1, characterized in that: It also includes an assessment module, which is used to achieve assessment based on the obtained model of the substation equipment and a built-in question bank.

4. A method for substation equipment maintenance training, which is used for the device for substation equipment maintenance training according to claim 1, 2 or 3, characterized in that: It includes the following steps, Steps for obtaining a substation equipment model: Obtain a dataset of self-similar features after fracturing the substation equipment and form a self-similar structure, and model based on the self-similar structure of the substation equipment to obtain a fractal model of the substation equipment; Obtain a motion model of the substation equipment based on the particle system and the fractal model of the substation equipment. The model of the substation equipment includes the fractal model and the motion model of the substation equipment. Perform simulation based on the obtained model of the substation equipment to achieve training. Based on the obtained model of the substation equipment and with an in-built question bank, achieve assessment.

5. A device for substation equipment maintenance training includes a memory, a processor, and a computer program stored in the memory and executable on the processor. It is characterized in that: When the processor executes the computer program, it implements the corresponding steps in the method for substation equipment maintenance training described in claim 4.

6. A device for substation equipment maintenance training includes a computer-readable storage medium, and the computer-readable storage medium stores a computer program. It is characterized in that: When the computer program is executed by the processor, it implements the corresponding steps in the method for substation equipment maintenance training described in claim 4.

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