CN113888922A - Power transformer simulation training system - Google Patents
Power transformer simulation training system Download PDFInfo
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- CN113888922A CN113888922A CN202111231561.9A CN202111231561A CN113888922A CN 113888922 A CN113888922 A CN 113888922A CN 202111231561 A CN202111231561 A CN 202111231561A CN 113888922 A CN113888922 A CN 113888922A
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- G09B9/00—Simulators for teaching or training purposes
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- G06F30/20—Design optimisation, verification or simulation
Abstract
The invention discloses a power transformer simulation training system which comprises hardware infrastructure, a simulation supporting platform, a simulation training module and a simulation management module; the simulation training module is used for creating a simulation model and a simulation training project and performing simulation training; the simulation training projects comprise transformer appearance training, transformer structure training, transformer working principle training and transformer running state training. According to the invention, the appearance and the internal structure of the transformer equipment are subjected to three-dimensional modeling, the working principle and the running state are dynamically simulated, the power transformer simulation training system based on the digital twin technology is realized through virtual simulation interaction and three-dimensional simulation, the full-service-domain simulation training is carried out on the theoretical knowledge, the equipment principle and the running state of the power transformer, and an effective means is provided for the training of operation and maintenance personnel related to the transformer.
Description
Technical Field
The invention relates to a power transformer simulation training system, and belongs to the technical field of power system simulation training.
Background
The power transformer, which is a key main device in the power system, plays an extremely important role in the power system, and its operation affects the safety, reliability and stability of the power system. The training of the relevant operation and maintenance personnel of the transformer equipment is enhanced, the transformer fault can be effectively prevented and reduced, the accident capacity loss rate is reduced, the power supply rate of a power grid is improved, and the method has important significance for the safe and stable operation of a power system.
At present, most of training of operation and maintenance personnel related to transformer equipment is theoretical training, practical training or three-dimensional simulation training. These training methods are inefficient and have a single effect. The structure, the principle and the running state of the transformer cannot be integrally and comprehensively trained, so that the operation skills of operation and maintenance personnel related to transformer equipment cannot be effectively improved.
The rapid development of the digital twin technology provides a new idea for solving the above problems. The digital twin constructs a same entity in a digital world through a digital means to simulate the behavior of the digital twin in a real environment, dynamically presents the past and present behaviors or processes, effectively reflects the operation condition of the system and accordingly presents abstract objects more truly and comprehensively. By means of virtual-real interaction feedback, data fusion display, decision iteration optimization and the like, real-time, efficient and intelligent operation or operation services are provided for the physical entity.
Disclosure of Invention
The invention aims to provide a power transformer simulation training system, which applies a digital twinning technology to the simulation training of a transformer, maps the condition of the transformer in an entity space in a digital space, constructs a digital twinning body for the three-dimensional appearance, the internal structure, the equipment principle and the running state of the transformer, realizes the full-service-domain simulation training of theoretical knowledge, the equipment principle, the running state and the like of the power transformer through virtual simulation interaction and three-dimensional simulation training design, and improves the efficiency and the quality of the training.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the invention provides a power transformer simulation training system which comprises hardware infrastructure, a simulation supporting platform, a simulation training module and a simulation management module;
the hardware infrastructure is used for providing hardware facilities for calculation and communication for power transformer simulation training;
the simulation support platform is used for providing operation support and a database of a calculation process for power transformer simulation training;
the simulation training module is used for creating a simulation model and a simulation training project and carrying out simulation training;
the simulation management module is used for managing personnel, simulation training projects, training process records and examination results in simulation training and setting a training mode.
Further, the hardware infrastructure includes a host infrastructure, a communication infrastructure, a network infrastructure, and a virtual reality infrastructure;
the host infrastructure comprises a server;
the communication infrastructure includes wiring required for network communications;
the network infrastructure comprises switches, routers and firewalls;
the virtual reality infrastructure includes VR all-in-one and PC emulation machine.
Furthermore, the simulation support platform comprises an operation support module, a database, a model management module, an interaction management module and a development interface;
the operation support module is used for providing three-dimensional graphic rendering support;
the database is used for recording training processes and assessment results and storing personnel information;
the model management module is used for managing the created simulation model and the model parameters;
the interaction management module is used for performing man-machine interaction and visual display on the multi-dimensional information of the transformer;
the development interface is used for secondary development and extension of the system.
Further, the simulation training module is specifically configured to,
acquiring transformer photo data, specification specifications and actual measurement data;
processing the transformer photo to obtain transformer texture characteristics;
analyzing the specification and the actual measurement data to obtain structural parameters, material parameters, geometric parameters and physical action relations of the transformer; the physical action relation refers to a physical linkage relation or a mechanical action relation among the transformer components;
and (3) establishing a digital twin transformer three-dimensional model by adopting a modeling tool in combination with the structural parameters, the material parameters, the geometric parameters, the physical action relationship and the textural features of the transformer.
Further, the simulation training module is specifically configured to,
establishing a model control equation based on a three-dimensional model of the digital twin transformer, and setting material physical property parameters and physical field boundary conditions to obtain a simulation model of the digital twin transformer;
the model control equation adopts a fluid dynamics equation and comprises a mass conservation equation, a momentum conservation equation and an energy conservation equation;
the material physical property parameters comprise: transformer core, winding characteristics and transformer oil physical parameters;
the physical field boundary conditions comprise setting a transformer oil flow inlet, an inlet flow speed and air pressure; setting an oil flow port and air pressure of the transformer; setting other boundaries as wall boundary conditions; and setting a temperature boundary temperature.
Further, the simulation training module is specifically used for inputting the environmental temperature, the oil flow speed and the oil thermal conductivity parameter values in the simulation process, and simulating to obtain the temperature values of the transformer oil, the transformer iron core and the high-low voltage winding.
Further, the simulation training module is specifically configured to,
extracting historical data of transformer operation provided by a transformer substation operation monitoring system, wherein the historical data comprises active power P, reactive power Q, current I, gears, temperature and capacity of the transformer;
and inputting the historical data and the running state of the transformer into the created transformer running state simulation model for training to obtain the trained digital twin transformer running state simulation model.
Further, the simulation training module is specifically configured to create the following simulation training program by writing a script:
the method comprises the following steps of transformer appearance training, transformer structure training, transformer working principle training and transformer running state training;
the transformer appearance training is used for performing cognitive training on the appearance and the composition of the transformer by performing interactive operation on the created transformer three-dimensional model;
the transformer structure training is used for carrying out cognitive training on the internal structure and composition of the transformer by carrying out simulation disassembly on the created three-dimensional model of the transformer;
the transformer working principle training is used for simulating the physical action relationship of the transformer in the three-dimensional transformer model and carrying out simulation training on the working principles of a breather and a gas relay of the transformer;
and the transformer operation state training is used for training the operation state of the transformer by adjusting the physical property parameters of the transformer material.
Furthermore, the simulation management module comprises a personnel management module, a training management module and an examination management module;
the personnel management module is used for managing information and authority of students, instructors and managers;
the training management module is used for checking, adding and deleting the contents of the simulation training items and checking, inquiring and counting the simulation training process;
the assessment management module is used for checking, inquiring, counting and evaluating the simulation assessment records.
Further, the training mode comprises simulation training, simulation exercise and simulation assessment.
Compared with the prior art, the invention realizes a power transformer simulation training system based on the digital twin technology by three-dimensional modeling of the appearance and the internal structure of the transformer equipment, dynamic simulation of the working principle and the running state, virtual simulation interaction and three-dimensional simulation explanation, carries out full-service-domain simulation training on the theoretical knowledge, the equipment principle and the running state of the power transformer, and provides an effective means for training operation and maintenance personnel related to the transformer.
Drawings
FIG. 1 is a diagram of a power transformer simulation training system architecture according to the present invention;
FIG. 2 is a three-dimensional model realization process of a transformer created by a simulation training module according to the present invention;
FIG. 3 is a flow of implementing simulation modeling of a transformer by the simulation training module according to the present invention;
fig. 4 is a simulation flow of the operation state of the transformer according to the present invention.
Detailed Description
The invention is further described below. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Referring to fig. 1, the present invention provides a power transformer simulation training system, including: the system comprises hardware infrastructure, a simulation supporting platform, a transformer digital twin simulation training module and a transformer digital twin simulation management module. The simulation training module and the simulation management module realize the operation, interaction and management of the system on the basis of the simulation supporting platform.
Hardware infrastructure
The hardware infrastructure provides complete hardware support for the power transformer simulation training system based on the digital twin technology. The system mainly comprises a host infrastructure, a communication infrastructure, a network infrastructure, a virtual reality infrastructure and the like. Wherein, the host infrastructure mainly refers to servers, computers, and the like; the communication infrastructure mainly refers to wiring required for network communication; the network infrastructure mainly refers to network equipment such as switches, routers, firewalls and the like; the virtual reality infrastructure includes VR all-in-one, PC emulation machine etc..
(II) simulation supporting platform
The simulation support platform provides interactive and distributed basic service support for a simulation training system, and mainly comprises an operation support, database management, model management, interaction management, a development interface and the like. The operation support mainly provides a three-dimensional graphic rendering function, and visual and vivid visual experience is brought to application; the database management mainly provides management functions for training records, personnel information and the like; the model management mainly carries out unified management on a transformer three-dimensional model, a transformer substation three-dimensional scene model, model mapping data, model position data, model state data and the like required by the simulation training system; interaction management mainly supports natural and effective interaction functions; the development interface supports secondary development of the system.
(III) simulation training module
The simulation training module realizes the interaction of the digital twin simulation of the transformer and the digital twin simulation training of the transformer. The simulation training module provides transformer appearance, structure, equipment principle and running state simulation training, a full three-dimensional immersion type interactive transformer simulation environment is constructed, digital twin simulation of the transformer is achieved through transformer data fusion and simulation training, a simulation learning and simulation examination closed-loop training mode is provided through functions of scene roaming, intelligent guiding, equipment cognition, principle displaying, equipment operation, process simulation and the like, and multi-angle, multi-dimension and rich interaction experience is achieved.
(IV) simulation management module
The simulation management module provides the whole-cycle unified management of data, record and information of the whole simulation training system and provides the functions of personnel information management, training project management, training process management, assessment and evaluation management and the like.
As a preferred embodiment, the simulation training module is specifically adapted to create a digital twin three-dimensional model of the transformer. The specific creation process is shown in figure 2,
acquiring transformer photo data, specification specifications and actual measurement data;
processing the transformer photo to obtain transformer texture characteristics;
and analyzing the specification and the actual measurement data to obtain the structural parameters, the material parameters, the geometric parameters and the physical action relationship of the transformer, and accurately expressing the structure and the size of the equipment. Wherein, the physical action relation refers to the physical linkage relation or the mechanical action relation among the transformer components.
And (3) establishing a digital twin transformer three-dimensional model by adopting modeling software such as CAE (computer aided engineering), 3Dmax (three-dimensional X-ray) and the like in combination with the structural parameters, the material parameters, the geometric parameters, the physical action relationship and the texture characteristics of the transformer.
As a preferred embodiment, the simulation training module is specifically configured to perform simulation modeling on a three-dimensional transformer model and create a digital twin transformer simulation model, and mainly includes: creating model control equations, defining material parameters, setting physical field boundary conditions, and the like.
1) Creating model governing equations
And carrying out simulation modeling on the temperature field and the flow field of the transformer according to the main content of the transformer simulation training. And describing the distribution conditions of a temperature field and a flow field in the oil-immersed transformer by adopting a fluid dynamics equation. The fluid dynamics equations mainly include a mass conservation equation, a momentum conservation equation, and an energy conservation equation. The specific equation form is as follows:
▽·(ρu)＝0
ρ(u·▽)u＝▽·[-pI+μ(▽u+(▽u)T)]+F
ρcpu·▽T-▽·(k▽T)＝Q
in the above formula, ρ is density, u is velocity vector of fluid, p is pressure, I is unit matrix, μ is dynamic viscosity of fluid, F is momentum source term of momentum conservation equation, such as gravity, electromagnetic force and the like, cpThe specific heat capacity is T, the temperature is T, the thermal conductivity is k, and Q is an energy source term of an energy conservation equation, such as heat generated by an iron core and a winding.
2) Defining material parameters
In order to solve the transformer multi-physical field, physical parameters of a transformer material in a simulation model need to be defined. The physical parameters comprise transformer iron core, winding characteristics, physical parameters of transformer oil and the like.
By introducing the relation that physical parameters of the transformer oil change along with the temperature, the multi-physical field characteristics of the transformer can be calculated more accurately.
The relation of the physical parameters of the transformer oil along with the temperature change is obtained according to equipment test data provided by a transformer equipment manufacturer. The data can reflect the influence of the oil flow velocity of the transformer on the temperature field distribution of the oil-immersed transformer, and the temperature values of the iron core and the high-low voltage winding under the conditions of different oil flow velocities and different oil thermal conductivities can be calculated according to the data.
3) Setting physical field boundary conditions
In order to solve the simulation model, boundary conditions need to be applied for calculation. The boundary conditions are set as shown in table 1, where T denotes temperature, U denotes flow rate, P denotes pressure, and AB, BC, CD, DE, EF, FG, GH are different boundary points in the simulation model. In the simulation, the boundary EF is set as the oil inlet of the transformer, and the flow speed is set as u0And an atmospheric pressure of 1atm (101325Pa) was applied. CD is set as transformer oil outlet, applying oneAtmospheric pressure 1atm (101325 Pa). The other boundaries are set as wall boundary conditions, and the wall non-slip flow velocity u is 0. For the temperature boundaries, the outer boundaries were all set to 300K.
TABLE 1 boundary condition parameters
| Boundary of | AB | BC | CD | DE | EF | FG | GH |
| T | 300K | 300K | 300K | 300K | 300K | 300K | 300K |
| U | 0 | 0 | u | 0 | u0 | 0 | 0 |
| P | - | - | 1atm | - | 1atm | - | - |
In the simulation process, the temperature values of the transformer oil, the transformer iron core and the high-low voltage winding are obtained through simulation by inputting parameter values such as environment temperature, oil flow speed, oil thermal conductivity and the like.
The specific process of the simulation modeling of the digital twin transformer is shown in fig. 3, and specifically comprises the following steps:
(1) selecting dimensions of simulation, such as temperature characteristic simulation;
(2) selecting physical fields, such as electromagnetic fields, oil flow fields and the like, which are factors influencing the operating temperature of the transformer;
(3) the coupling interface mode is used for carrying out fusion calculation on different factors according to different influence factors;
(4) establishing a model environment, and modeling the operation environment and state of the transformer, such as atmospheric temperature, operation load and the like;
(5) constructing a geometric figure, and establishing a transformer geometric figure in multi-physical-field simulation software;
(6) formulating material properties;
(7) defining physical field boundary conditions;
(8) creating a grid, and defining the range of the constructed graphs;
(9) running simulation, and running the established simulation model;
(10) and obtaining a required simulation numerical value according to the simulation result.
As a preferred embodiment, the simulation training module is specifically configured to perform simulation on the operation state of the transformer, and construct a simulation model of the operation state of the digital twin transformer, specifically referring to fig. 4.
Historical data and operation data of the transformer are acquired through a data interface provided by a transformer substation operation monitoring system, and the historical data and the operation data mainly comprise active power P, reactive power Q, current I, gears, temperature, capacity and the like of the transformer.
And inputting the historical data and the running state of the transformer into the built transformer running state simulation model for training to obtain the digital twin transformer running state simulation model.
In actual training, data such as active power P, reactive power Q, current I, gears, temperature and capacity of the transformer are input, and a reliable running state simulation result can be obtained.
As a preferred embodiment, the simulation training module is specifically used for compiling a transformer simulation training script, and making transformer simulation training contents by using materials such as characters, pictures, audio, video, three-dimensional models, three-dimensional animation and the like through multimedia software. The transformer simulation training content comprises the following steps: the method comprises the following steps of transformer appearance training, transformer structure training, transformer working principle training and transformer running state training. The training content comprises: the method comprises the following steps of transformer appearance training, transformer structure training, transformer working principle training and transformer running state training.
Transformer appearance training: and (3) recognizing the appearance and components of the transformer through interactive operation of the three-dimensional model.
Transformer structure training: and learning the internal structure and components of the transformer by simulating and disassembling the three-dimensional model of the transformer.
Transformer theory of operation training: and (3) performing simulation training on working principles of a breather, a gas relay and the like of the transformer through three-dimensional simulation of the physical action relationship of the transformer.
Training the running state of the transformer: through the adjustment of transformer parameters on a simulation interface, the running state of the transformer is displayed in a system visualization mode, and the training of the running state of the transformer is achieved.
As a preferred implementation mode, the constructed three-dimensional model, the simulation data and the simulation training content of the transformer are imported into a digital twin simulation support platform for integration, the interaction mode of the system is designed, the real-time interaction and the visual display of the multi-dimensional information of the transformer are realized, and the visual training content and the visual simulation data are displayed on the basis of the three-dimensional model of the transformer.
As a preferred implementation mode, the simulation management module is specifically used for realizing three main simulation training management functions of personnel management, training management and assessment management; and developing a reserved interface to expand the simulation content of the system at any time. The specific functions of the simulation management module are shown in table 2 below,
TABLE 2 simulation management Module functionality
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.
Claims (10)
1. A power transformer simulation training system is characterized by comprising hardware infrastructure, a simulation supporting platform, a simulation training module and a simulation management module;
the hardware infrastructure is used for providing hardware facilities for calculation and communication for power transformer simulation training;
the simulation support platform is used for providing operation support and a database of a calculation process for power transformer simulation training;
the simulation training module is used for creating a simulation model and a simulation training project and carrying out simulation training;
the simulation management module is used for managing personnel, simulation training projects, training process records and examination results in simulation training and setting a training mode.
2. The power transformer simulation training system according to claim 1, wherein the hardware infrastructure comprises a host infrastructure, a communication infrastructure, a network infrastructure, and a virtual reality infrastructure;
the host infrastructure comprises a server;
the communication infrastructure includes wiring required for network communications;
the network infrastructure comprises switches, routers and firewalls;
the virtual reality infrastructure includes VR all-in-one and PC emulation machine.
3. The power transformer simulation training system as claimed in claim 1, wherein the simulation support platform comprises an operation support module, a database, a model management module, an interaction management module and a development interface;
the operation support module is used for providing three-dimensional graphic rendering support;
the database is used for recording training processes and assessment results and storing personnel information;
the model management module is used for managing the created simulation model and the model parameters;
the interaction management module is used for performing man-machine interaction and visual display on the multi-dimensional information of the transformer;
the development interface is used for secondary development and extension of the system.
4. The power transformer simulation training system of claim 1, wherein the simulation training module is specifically configured to,
acquiring transformer photo data, specification specifications and actual measurement data;
processing the transformer photo to obtain transformer texture characteristics;
analyzing the specification and the actual measurement data to obtain structural parameters, material parameters, geometric parameters and physical action relations of the transformer; the physical action relation refers to a physical linkage relation or a mechanical action relation among the transformer components;
and (3) establishing a digital twin transformer three-dimensional model by adopting a modeling tool in combination with the structural parameters, the material parameters, the geometric parameters, the physical action relationship and the textural features of the transformer.
5. The power transformer simulation training system as claimed in claim 4, wherein the simulation training module is specifically configured to,
establishing a model control equation based on a three-dimensional model of the digital twin transformer, and setting material physical property parameters and physical field boundary conditions to obtain a simulation model of the digital twin transformer;
the model control equation adopts a fluid dynamics equation and comprises a mass conservation equation, a momentum conservation equation and an energy conservation equation;
the material physical property parameters comprise: transformer core, winding characteristics and transformer oil physical parameters;
the physical field boundary conditions comprise setting a transformer oil flow inlet, an inlet flow speed and air pressure; setting an oil flow port and air pressure of the transformer; setting other boundaries as wall boundary conditions; and setting a temperature boundary temperature.
6. The power transformer simulation training system according to claim 4, wherein the simulation training module is specifically configured to input values of ambient temperature, oil flow speed and oil thermal conductivity parameter during the simulation process, and simulate to obtain temperature values of the transformer oil, the transformer core and the high and low voltage windings.
7. The power transformer simulation training system as claimed in claim 4, wherein the simulation training module is specifically configured to,
extracting historical data of transformer operation provided by a transformer substation operation monitoring system, wherein the historical data comprises active power P, reactive power Q, current I, gears, temperature and capacity of the transformer;
and inputting the historical data and the running state of the transformer into the created transformer running state simulation model for training to obtain the trained digital twin transformer running state simulation model.
8. The power transformer simulation training system according to claim 4, wherein the simulation training module is specifically configured to create the following simulation training items by writing scripts:
the method comprises the following steps of transformer appearance training, transformer structure training, transformer working principle training and transformer running state training;
the transformer appearance training is used for performing cognitive training on the appearance and the composition of the transformer by performing interactive operation on the created transformer three-dimensional model;
the transformer structure training is used for carrying out cognitive training on the internal structure and composition of the transformer by carrying out simulation disassembly on the created three-dimensional model of the transformer;
the transformer working principle training is used for simulating the physical action relationship of the transformer in the three-dimensional transformer model and carrying out simulation training on the working principles of a breather and a gas relay of the transformer;
and the transformer operation state training is used for training the operation state of the transformer by adjusting the physical property parameters of the transformer material.
9. The power transformer simulation training system as claimed in claim 1, wherein the simulation management module comprises a personnel management module, a training management module and an assessment management module;
the personnel management module is used for managing information and authority of students, instructors and managers;
the training management module is used for checking, adding and deleting the contents of the simulation training items and checking, inquiring and counting the simulation training process;
the assessment management module is used for checking, inquiring, counting and evaluating the simulation assessment records.
10. The power transformer simulation training system as claimed in claim 1, wherein the training modes comprise simulation training, simulation practice and simulation assessment.
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| CN114460863A (en) * | 2022-01-17 | 2022-05-10 | 武汉魅客科技有限公司 | Information simulation device of intelligent electric cabinet of power distribution room applying digital twin technology |
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