CN111553079B - Three-dimensional power grid training simulation method based on virtual reality technology - Google Patents
Three-dimensional power grid training simulation method based on virtual reality technology Download PDFInfo
- Publication number
- CN111553079B CN111553079B CN202010356467.5A CN202010356467A CN111553079B CN 111553079 B CN111553079 B CN 111553079B CN 202010356467 A CN202010356467 A CN 202010356467A CN 111553079 B CN111553079 B CN 111553079B
- Authority
- CN
- China
- Prior art keywords
- database
- data
- virtual reality
- power grid
- electrical
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004088 simulation Methods 0.000 title claims abstract description 65
- 238000000034 method Methods 0.000 title claims abstract description 55
- 238000012549 training Methods 0.000 title claims abstract description 41
- 238000005516 engineering process Methods 0.000 title claims abstract description 33
- 230000005540 biological transmission Effects 0.000 claims abstract description 17
- 230000003287 optical effect Effects 0.000 claims abstract description 12
- 238000012545 processing Methods 0.000 claims abstract description 11
- 238000011156 evaluation Methods 0.000 claims description 16
- 230000008569 process Effects 0.000 claims description 14
- 238000005070 sampling Methods 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 239000003990 capacitor Substances 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 4
- 230000005684 electric field Effects 0.000 claims description 4
- 239000011159 matrix material Substances 0.000 claims description 4
- 230000003321 amplification Effects 0.000 claims description 3
- 238000004364 calculation method Methods 0.000 claims description 3
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 3
- 238000007405 data analysis Methods 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 230000000007 visual effect Effects 0.000 description 5
- 230000007613 environmental effect Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000010224 classification analysis Methods 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000013075 data extraction Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q10/00—Administration; Management
- G06Q10/06—Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
- G06Q10/063—Operations research, analysis or management
- G06Q10/0639—Performance analysis of employees; Performance analysis of enterprise or organisation operations
- G06Q10/06393—Score-carding, benchmarking or key performance indicator [KPI] analysis
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
- G06Q50/10—Services
- G06Q50/20—Education
- G06Q50/205—Education administration or guidance
- G06Q50/2057—Career enhancement or continuing education service
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/18—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism
- G09B23/188—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism for motors; for generators; for power supplies; for power distribution
Landscapes
- Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
- Physics & Mathematics (AREA)
- Human Resources & Organizations (AREA)
- Educational Administration (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Strategic Management (AREA)
- Educational Technology (AREA)
- Tourism & Hospitality (AREA)
- Economics (AREA)
- Entrepreneurship & Innovation (AREA)
- Development Economics (AREA)
- Marketing (AREA)
- Geometry (AREA)
- General Business, Economics & Management (AREA)
- Algebra (AREA)
- Computational Mathematics (AREA)
- Evolutionary Computation (AREA)
- General Engineering & Computer Science (AREA)
- Pure & Applied Mathematics (AREA)
- Mathematical Physics (AREA)
- Mathematical Optimization (AREA)
- Mathematical Analysis (AREA)
- Game Theory and Decision Science (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Operations Research (AREA)
- Quality & Reliability (AREA)
- Software Systems (AREA)
- Computer Graphics (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Primary Health Care (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention belongs to the technical field of power grid simulation, and discloses a three-dimensional power grid training simulation method and system based on a virtual reality technology, which are used for data analysis and classification; measuring current, voltage, frequency, phase, active, reactive, electrical energy and other related electrical quantities; calculating relevant electrical quantity parameters, and processing and describing relevant data in a distinguishing way; specific display is carried out on different electrical quantity parameters, and effective distinction can be carried out through a database; calculating a database transmission performance index; and performing substation simulation by using a substation scene model of the database and the equipment library. According to the invention, the electrical phenomenon and the optical phenomenon caused by factors such as different voltage levels, different equipment capacities and the like of the transformer substation in actual transformer substation operation and faults are distinguished, and repeated demonstration playing and operation are focused on the differences of the electrical phenomenon and the optical phenomenon, so that a high-precision transformer substation simulation training system is formed.
Description
Technical Field
The invention belongs to the technical field of power grid simulation, and particularly relates to a three-dimensional power grid training simulation method and system based on a virtual reality technology.
Background
Currently, the current state of the art commonly used in the industry is as follows: nowadays, the power grid scale is increasingly enlarged, the equipment types of all equipment substations are more and more, and the matched devices are more and more complex, so that on-site operators are difficult to fully know the running conditions in the substation, and the training difficulty is high, especially in a transformer substation. As an important component of the power system, the safe operation of the transformer substation is important in the aspects of ensuring the reliability of power supply, personal safety of staff and the like, and the research from the initial two-dimensional simulation training system establishment to the three-dimensional visual transformer substation simulation system based on the virtual reality technology is continuously mature and started to be put into use, so that the power department continuously increases the investment of the transformer substation training and pays importance to the safe and reliable operation of the power system. At present, in order to solve the problems that a substation simulation system is long in construction period, an equipment model is difficult to recycle, and the like, a construction method of an expandable object library is provided, and the model modeling of the method is to utilize 3ds max software for equipment modeling, and is characterized in that the equipment library can be recycled, and the process of increasing and decreasing equipment in a whole system can be directly operated on the original basis without' lifting a stove; at present, most of modeling foundations of a transformer substation simulation system based on a virtual reality technology are software tools taking 3ds max as modeling development, and a method for establishing a scene model and an equipment model of a virtual scene by using the 3ds max is proposed in the prior art 1, because the 3ds max modeling tools have a powerful animation setting function which is easy to operate, the model becomes more vivid, rapid modeling of the transformer substation scene is realized by matching OSG (open scene graph) plug-in technology and panoramic technology, and the realized three-dimensional scene has good visual roaming experience, so that people feel personally on the scene. In the prior art 2, a 3ds max modeling tool is used for modeling substation equipment and a scene, an OSG technology is used for exporting a model, and an LOD technology is combined for optimizing the model; the OpenGL standard acts as an open three-dimensional graphics standard independent of the operating system. The method comprises hundreds of graphic functions which can be directly called, can realize modeling, transformation, light and color processing and other higher-level functions, and has the advantages of avoiding the problems of expensive equipment, complex development and the like caused by other higher-level image workstations, and realizing complex three-dimensional graphic application on a microcomputer.
However, three-dimensional visual modeling methods have been very excellent and sophisticated, but are difficult to guarantee in terms of accuracy. For example, operations, fault anomalies and the like in the transformer substation can actually generate different electrical phenomena according to differences of voltage levels, operation types, equipment types and the like, and the prior art in this regard does not give enough attention heretofore, and is not explicitly embodied in three-dimensional simulation training.
In summary, the problems of the prior art are: in the existing power grid, the accuracy of the three-dimensional visual modeling method is not high.
In addition, the prior art is not based on a virtual reality technology, a substation simulation training system is analyzed in a finer manner, and electrical phenomena and optical phenomena caused in actual operation and faults due to factors such as different voltage levels, different equipment capacities and the like of a substation are not distinguished, so that a substation simulation effect is poor.
Disclosure of Invention
Aiming at the problems existing in the prior art, the invention provides a three-dimensional power grid training simulation method and system based on a virtual reality technology.
The invention discloses a three-dimensional power grid training simulation method based on a virtual reality technology, which specifically comprises the following steps:
analyzing related data and information, and classifying the related data according to voltage levels, equipment capacity and other electrical parameters;
measuring current, voltage, frequency, phase, active power, reactive power, electric energy and other related electric quantity by using various measuring equipment, and storing the measured or obtained related real-time data and historical data into a database;
step three, the acquired partial information is subjected to sampling and holding pairs and then is sent to an A/D converter, and the analog quantity is converted into a corresponding digital quantity; calculating voltage, current effective value and active power according to sampling frequency in the A/D conversion process, period of original signal, digital voltage and current signal by microprocessor; calculating other electrical quantity parameters according to the physical relation between the other electrical quantity parameters and the three basic electric quantity parameters;
step four, processing and distinguishing description are carried out on the collected, obtained and calculated related data; specific display is carried out on different electrical quantity parameters, namely voltage class, equipment capacity and other electrical and optical phenomena under different combination conditions, and the electrical and optical phenomena can be effectively distinguished through a database;
step five, calculating a database transmission performance index;
step six, a database is called, and substation simulation is carried out by utilizing a substation scene model and an equipment library which are stored in the database in advance; selectively or completely storing the simulation content; details are known based on the relevant data records and evaluation feedback is given.
Further, in step one, the related data includes, but is not limited to: voltage on bus, voltage, current and power on each outgoing line; the voltage current and power of the feedback loop; actual capacity of the transformer, current; the current amplitude phase, the power factor and the reactive power on the capacitor; there are also electrical quantities on other devices.
Further, in the first step, the data classification specifically includes:
(1) The parameters on the nodes are used as classification basis, and the data layers are n layers in total; data nodes of the ith layer share M i And if so, the number of the finally generated nodes is as follows:
X＝(n-1)*M i ；
(2) Method for using statistical probabilityConsider electrical phenomena; assuming the occurrence probability alpha of a certain electrical phenomenon ι The method comprises the following steps:
the probability statistics determine whether each node exists or not according to the setting of the probability after reaching a certain value.
In the fourth step, the processing the related data, and the differential description specifically includes:
the amount of presentation is taken as a function group:
wherein i represents the display quantity of the ith group of electric, sound and the like, x j Indicating the J-th related factor, the subscripts with B are all parameters under rated operation;
representing other operating conditions similar to the nominal operating condition, i.e. having other operating conditions linearly related to the nominal operating condition, as the nominal operating condition multiplied by a factor
Whereas the actual operating situation->
Further, in the fourth step, the specific display specifically includes:
the functions of local comparison and amplification are adopted, and two or more groups of data are displayed on a screen in real time according to columns for quantitative comparison.
In a fifth step, the method for calculating the database transmission performance index specifically includes:
the data measured by the indexes given by the m paths at n times are given to form a data index matrix:
according to the related classification of the data and the transmission index, the available bandwidth is used as a positive index, and the packet loss rate and the data delay are used as reverse indexes;
defining the ith item on the jth path as a performance positive index efficacy score
Wherein->
Is the index disallowed value of the ith item, +.>
Is an allowable value or a satisfaction value; performance stress score->
Let lambda set i As the i index weight, the j path performance evaluation index can be obtained as follows:
there are k evaluation indexes and L positive indexes.
Further, in step six, the substation scene model and the equipment library specifically include:
substation scene model: stored in a database demonstration library, and can be modified according to the need; meanwhile, the modified model can cover the original example and can be only used as a simulation file to be stored separately; the transformer substation scene model can carry out sharing communication and evaluation through a user sharing function;
device library: setting a Powersystem and Element related basic source library in a database according to the category of the Powersystem and the Element related basic source library; the Powersystem contains all equipment that may be needed for main transformers, buses, circuit breakers, disconnectors and other substations, and the elements contain various inductances, capacitances and resistances.
Further, in step six, the substation simulation specifically includes:
in the simulation process, each operation database is provided with an intelligent prompt, and the intelligent prompt is used for preventing operation violating operation rules of transformer substation construction, operation and maintenance from occurring in the process of building the transformer substation by a learner, so that the training achieves the same effect as the on-site operation;
after the basic setting and the construction are completed, the database searches various electrical parameter phenomena in the database according to the electric quantity contained in the instruction according to the instruction of an operator, acquires a part corresponding to the current running state, plays a video through a screen, and can automatically record and transmit the video to a historical record sub-database of the database;
the operation condition of the equipment in the transformer substation corresponding to the current video is called through the screen interface selection keys, wherein the operation condition comprises current, voltage real-time numerical values, temperature, electric field and magnetic field distribution, and the operation condition is displayed in a plurality of different window interfaces.
The invention further aims to provide an information data processing terminal for realizing the three-dimensional power grid training simulation method based on the virtual reality technology.
It is another object of the present invention to provide a computer readable storage medium comprising instructions which, when run on a computer, cause the computer to perform the three-dimensional grid training simulation method based on virtual reality technology.
The invention further aims to provide a three-dimensional power grid training simulation system based on the virtual reality technology, which is used for realizing the three-dimensional power grid training simulation method based on the virtual reality technology.
In summary, the invention has the advantages and positive effects that: the invention classifies fault anomalies of operations under conditions of power transformers with different voltage levels and different capacities and establishes a database so as to be convenient for accessing the database, calling related contents and displaying and playing according to types during simulation training.
The invention creatively proposes to make the substation simulation training system based on the virtual reality technology more careful, distinguish the electrical phenomenon and the optical phenomenon caused by the factors of different voltage classes, different equipment capacities and the like of the substation in actual substation operation and faults, and focus on repeated demonstration play and operation aiming at the differences of the electrical phenomenon and the optical phenomenon, thereby forming a high-precision substation simulation training system.
The invention can fully utilize a large amount of real-time and historical data provided by the substation data acquisition monitoring system, and ensure the authenticity and reliability of the data; accurately displaying the difference of different electrical operations or faults under different electrical parameters and electrical and sound phenomena generated in the processing process of the faults; the multiplexing function of simulation can be repeated by directly modifying the electrical parameters on the basis of the original simulation scene; the simulation record is provided, the history operation data is stored, the function is realized, the instructor machine demonstrates, the record is called, and the function of the student is evaluated and criticized.
Drawings
Fig. 1 is a flowchart of a three-dimensional power grid training simulation method based on a virtual reality technology provided by an embodiment of the invention.
Detailed Description
The present invention will be described in further detail with reference to the following examples in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
In the existing power grid, the accuracy of the three-dimensional visual modeling method is not high. In addition, the prior art is not based on a virtual reality technology, a substation simulation training system is analyzed in a finer manner, and electrical phenomena and optical phenomena caused in actual operation and faults due to factors such as different voltage levels, different equipment capacities and the like of a substation are not distinguished, so that a substation simulation effect is poor.
In order to solve the above technical problems, the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1, the three-dimensional power grid training simulation method based on the virtual reality technology provided by the embodiment of the invention specifically includes:
s101, relevant data and information are analyzed, and the relevant data are classified according to voltage levels, equipment capacity and other electrical parameters.
S102, measuring current, voltage, frequency, phase, active power, reactive power, electric energy and other related electric quantity by using various measuring equipment, and storing the measured or obtained related real-time data and historical data into a database.
S103, the acquired partial information is subjected to sampling and holding pairs and then is sent to an A/D converter, and the analog quantity is converted into a corresponding digital quantity; calculating voltage, current effective value and active power according to sampling frequency in the A/D conversion process, period of original signal, digital voltage and current signal by microprocessor; and then calculating other electrical quantity parameters according to the physical relation between the other electrical quantity parameters and the three basic electric quantity parameters.
S104, processing and distinguishing description are carried out on the collected, obtained and calculated related data; the specific display of different electrical parameters, namely voltage class, equipment capacity and other electrical and optical phenomena under different combination conditions can be realized, and the specific display can be effectively distinguished through a database.
S105, calculating a database transmission performance index.
S106, calling a database, and performing substation simulation by using a substation scene model and an equipment library stored in the database in advance; selectively or completely storing the simulation content; details are known based on the relevant data records and evaluation feedback is given.
In step S101, relevant data provided by the embodiment of the present invention includes, but is not limited to: voltage on bus, voltage, current and power on each outgoing line; the voltage current and power of the feedback loop; actual capacity of the transformer, current; the current amplitude phase, the power factor and the reactive power on the capacitor; there are also electrical quantities on other devices.
In step S101, the data classification provided in the embodiment of the present invention specifically includes:
(1) The parameters on the nodes are used as classification basis, and the data layers are n layers in total; data nodes of the ith layer share M i And if so, the number of the finally generated nodes is as follows:
X＝(n-1)*M i 。
(2) Taking the electrical phenomenon into consideration by adopting a statistical probability method; assuming the occurrence probability alpha of a certain electrical phenomenon ι The method comprises the following steps:
The probability statistics determine whether each node exists or not according to the setting of the probability after reaching a certain value.
In step S104, the processing of the related data provided by the embodiment of the present invention, the differential description specifically includes:
the amount of presentation is taken as a function group:
wherein i represents the display quantity of the ith group of electric, sound and the like, x j Represents the J thRelated factors, the subscripts with B are parameters under rated operation;
representing other operating conditions similar to the nominal operating condition, i.e. having other operating conditions linearly related to the nominal operating condition, as the nominal operating condition multiplied by a factor
Whereas the actual operating situation->
In step S104, the specific display provided in the embodiment of the present invention specifically includes:
the functions of local comparison and amplification are adopted, and two or more groups of data are displayed on a screen in real time according to columns for quantitative comparison.
In step S105, the method for calculating the database transmission performance index according to the embodiment of the present invention specifically includes:
the data measured by the indexes given by the m paths at n times are given to form a data index matrix:
and classifying according to the correlation of the data and the transmission index, taking the available bandwidth as a positive index, and taking the packet loss rate and the data delay as inverse indexes.
Defining the ith item on the jth path as a performance positive index efficacy score
Wherein->
Is the index disallowed value of the ith item, +.>
Is an allowable value or a satisfaction value; performance stress score->
Let lambda set i As the i index weight, the j path performance evaluation index can be obtained as follows:
there are k evaluation indexes and L positive indexes.
In step S106, the substation scenario model and the equipment library provided by the embodiment of the present invention specifically include:
substation scene model: stored in a database demonstration library, and can be modified according to the need; meanwhile, the modified model can cover the original example and can be only used as a simulation file to be stored separately; the substation scene model can carry out sharing communication and evaluation through a user sharing function.
Device library: setting a Powersystem and Element related basic source library in a database according to the category of the Powersystem and the Element related basic source library; the Powersystem contains all equipment that may be needed for main transformers, buses, circuit breakers, disconnectors and other substations, and the elements contain various inductances, capacitances and resistances.
In step S106, the substation simulation provided by the embodiment of the present invention specifically includes:
in the simulation process, each operation database is provided with an intelligent prompt, and the intelligent prompt is used for preventing operation violating operation rules of transformer substation construction, operation and maintenance from occurring in the process of building the transformer substation by a learner, so that the training achieves the same effect as the on-site operation.
After the basic setting and the construction are completed, the database searches various electrical parameter phenomena in the database according to the electric quantity contained in the instruction according to the instruction of an operator, acquires a part corresponding to the current running state, plays a video through a screen, and can automatically record and transmit the video to a historical record sub-database of the database.
The operation condition of the equipment in the transformer substation corresponding to the current video is called through the screen interface selection keys, wherein the operation condition comprises current, voltage real-time numerical values, temperature, electric field and magnetic field distribution, and the operation condition is displayed in a plurality of different window interfaces.
The technical scheme and technical effects of the present invention are further described below with reference to specific embodiments.
Example 1:
the three-dimensional power grid training simulation method based on the virtual reality technology provided by the embodiment of the invention comprises the following steps:
the method comprises the steps of (1) a data classification analysis method, wherein information which is frequently collected in a transformer substation comprises voltages on buses, voltages on various outgoing lines, currents and power; the voltage current and power of the feedback loop; actual capacity of the transformer, current; the current amplitude phase, the power factor and the reactive power on the capacitor; there are also electrical quantities on other devices; according to the invention, how the data of the database should be divided is considered according to the voltage level, the equipment capacity and other electrical parameters designed from the initial construction of the transformer substation, so that all the played information can be accurately distinguished when the database is called. Let x be the voltage plane data that can be selected when the database is called for simulation u The capacity of the device is selected to be x s The operation mode is selected as x j Species, etc., then finally let an electrical phenomenon be F, which is determined by the above argument and is denoted as F (x u ,x s ,x j ). Multiplying the corresponding probability, the probability is calculated by
Representing the probability of the kth occurrence of m possible value types caused by considering the jth uncertainty factor in a certain scene i of the transformer substation;
it is often necessary to set environmental parameters in advance, such as conditions of temperature, humidity, etc., atmospheric pressure, etc. The invention tries to display the corresponding environmental factors and the probability of the phenomenon in the playing interface, so that the training students can intuitively know the corresponding environmental factors and the probability of the phenomenon in the playing interface. The parameters considered and the probability of the electrical phenomenon occurring in hours can be displayed as follows
Secondly, the data extraction and calculation method is adopted, and the information frequently collected in the transformer substation comprises voltages on buses, voltages on all outgoing lines, currents and power; the voltage current and power of the feedback loop; actual capacity of the transformer, current; the current amplitude phase, the power factor and the reactive power on the capacitor; the electric quantity on other equipment can collect analog data information by means of various transformers and other measuring equipment, and the action states of a breaker, a disconnecting switch and a grounding disconnecting switch are collected and transmitted to a system by a data collecting device; because of the strong and weak electricity distinction between these information and the acquisition database system, it is necessary to add electrical isolation between the two. The sampling and holding pair is then sent to an A/D converter, the analog quantity is converted into the corresponding digital quantity, and the voltage, the current effective value and the active power can be calculated according to the sampling frequency, the period of the original signal and the voltage and current signal of the digital quantity in the A/D conversion process, and the part can be completed by a microprocessor. And then calculating according to the physical relation between other electric quantity parameters and the three basic electric quantity parameters. When actually obtaining data, common devices are a current transformer TA and a voltage transformer VT, and the transformation ratio of the common devices is assumed to be K ni And K nu The peak voltage of the AD converter is + -5V, and the conversion coefficient of the secondary signal to the AD converter defines K il Is of the order of K ul And the conversion coefficient of the AD converter is K ad For 8 bits, 10 bits, 12 bits, 14 bits of AD converter coefficients are K ad8 、K ad10 、K ad12 、K ad14 The calculation formulas are respectively as follows:
coefficient of current-voltage effectiveness K ie 、K ue Respectively is
Thereby obtaining the effective value of the actual voltage and current
The coefficients corresponding to the electric energy, the active power and the reactive power can be obtained according to the relation among the current, the voltage, the electric energy, the active power and the reactive power:
wherein N represents the power frequency period number of line sampling;
thirdly, calculating data transmission performance indexes of a database, wherein the database is provided with a plurality of paths for data transmission, the transmission performance of the single data transmission path is measured, the transmission indexes generally have data delay, packet loss rate, path available bandwidth and the like, and the data measured by the indexes given by the paths on m paths at n moments are set to form a data index matrix:
And fourthly, invoking and simulating the database, wherein in order to enable a student to operate more quickly in a training process, the database can provide a ready-made substation simulation scene, the student can directly simulate by using a built vivid substation scene model, the substation models are stored in an demonstration library of the database and can be modified as required, but the modified model cannot cover an original example, can only be stored separately as a simulation file, and a user sharing function is set for communication and evaluation. Besides the existing transformer substation model which is set by the database and the model can realize the operation of increasing and decreasing equipment, the equipment library which is possessed by the general training simulation system is set, and a student can build a simulation transformer substation which is suitable for individuals through actual needs. The database is named as a basic source library of Powersystem, element and the like according to different categories, the Powersystem comprises all equipment possibly needed by a transformer substation such as a bus, a circuit breaker, a disconnecting switch and the like, and the Element comprises various inductances, capacitances, resistances and the like for students to select by themselves. In the operation process of each step, the database needs to have intelligent prompt to prevent operation violating operation rules of transformer substation construction, operation and maintenance from occurring in the process of building the transformer substation by students, so that training achieves the same effect as on site. After the basic setting and the building are completed, the database can search various electrical parameter phenomena in the database according to the instruction of an operator and depending on the electrical quantity contained in the instruction, acquire a part corresponding to the current running state, play the video through a screen, and automatically record and transmit the video to a history record sub-database of the database. The operation condition of the equipment in the transformer substation corresponding to the current video is called through the screen interface selection keys, wherein the operation condition comprises current, voltage real-time numerical values, temperature, electric field and magnetic field distribution and the like of the equipment are displayed in a plurality of different window interfaces.
And fifthly, a database simulation historical data record and a retrieval method are adopted, so that simulation training can play a feedback role. When the fourth content is finished, a storage selection interface is provided, a learner can select to store or cancel, and when the fourth content is stored, contents such as operation flow graphics and texts, operation videos and the like are provided, and part or all of the contents can be stored according to the needs. When the learner calls the history simulation record, firstly, the learner can acquire the history record through transmission of the learner, secondly, the learner can monitor or access the operation simulation process of the learner by the open authority, the method has the meaning of real-time guidance, correction or advice can be inserted into specific details, and the learner can improve after receiving evaluation feedback.
In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When used in whole or in part, is implemented in the form of a computer program product comprising one or more computer instructions. When loaded or executed on a computer, produces a flow or function in accordance with embodiments of the present invention, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital Subscriber Line (DSL), or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid State Disk (SSD)), etc.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (10)
1. The three-dimensional power grid training simulation method based on the virtual reality technology is characterized by comprising the following steps of:
analyzing related data and information, and classifying the related data according to voltage class and equipment capacity;
measuring current, voltage, frequency, phase, active, reactive and electric energy by using various measuring equipment, and storing the measured or obtained relevant real-time data and historical data into a database;
step three, the collected partial information is sampled and maintained, and then is sent to an A/D converter, and is converted into corresponding digital quantity by analog quantity; calculating voltage, current effective value and active power according to sampling frequency in the A/D conversion process, period of original signal, digital voltage and current signal by microprocessor; then calculating electric quantity parameters according to the physical relation between other electric quantity parameters and the three basic electric quantity parameters;
step four, processing and distinguishing description are carried out on the collected, obtained and calculated related data; specific display is carried out on different electrical quantity parameters, namely voltage class, equipment capacity and electrical and optical phenomena under different combination conditions, and the electrical and optical phenomena can be effectively distinguished through a database;
step five, calculating a database transmission performance index;
step six, a database is called, and substation simulation is carried out by utilizing a substation scene model and an equipment library which are stored in the database in advance; selectively or completely storing the simulation content; and carrying out detail guidance based on the related data record, and giving evaluation feedback.
2. The method for simulating three-dimensional power grid training based on virtual reality technology according to claim 1, wherein in the first step, the related data includes, but is not limited to: voltage on bus, voltage, current and power on each outgoing line; the voltage current and power of the feedback loop; actual capacity of the transformer, current; the current amplitude phase, the power factor and the reactive power on the capacitor; and also the electrical quantity on the device.
3. The three-dimensional power grid training simulation method based on the virtual reality technology according to claim 1, wherein in the first step, the data classification specifically includes:
(1) The parameters on the nodes are used as classification basis, and the data layers are n layers in total; data nodes of the ith layer share M i And if so, the number of the finally generated nodes is as follows:
X＝(n-1)*M i ；
(2) Analyzing the electrical phenomenon by adopting a statistical probability method; probability of occurrence alpha of certain electrical phenomenon ι The method comprises the following steps:
wherein k=1, 2, … …，m，
Representing the probability of the kth occurrence in m possible values caused by considering the jth uncertainty factor in a certain scene i of the transformer substation;
the probability statistics determine whether each node exists or not according to the setting of the probability after reaching a certain value.
4. The three-dimensional power grid training simulation method based on the virtual reality technology according to claim 1, wherein in the fourth step, the processing of the related data, the differential description specifically includes:
the amount of presentation is taken as a function group:
wherein i=1, 2, … …, m; j=1, 2, … …, n, i represents the i-th group electric and acoustic display quantity, x j Indicating the j-th related factor, the subscripts with B are all parameters under rated operation;
representing other operating conditions similar to the nominal operating condition, i.e. having other operating conditions linearly related to the nominal operating condition, as the nominal operating condition multiplied by a factor
Whereas the actual operating situation->
5. The three-dimensional power grid training simulation method based on the virtual reality technology according to claim 1, wherein in the fourth step, the specific display specifically comprises:
the functions of local comparison and amplification are adopted, and two or more groups of data are displayed on a screen in real time according to columns for quantitative comparison.
6. The three-dimensional power grid training simulation method based on the virtual reality technology according to claim 1, wherein in the fifth step, the database transmission performance index calculation method specifically comprises:
the data measured by the indexes given by the m paths at n times are given to form a data index matrix:
according to the related classification of the data and the transmission index, the bandwidth is used as a positive index, and the packet loss rate and the data delay are used as reverse indexes;
defining the ith item on the jth path as a performance positive index efficacy score
Wherein->
Is the index disallowed value of the ith item, +.>
Is an allowable value or a satisfaction value; performance stress score->
Let lambda set i And (3) obtaining the j path performance evaluation index for the i index weight as follows:
there are k evaluation indexes, i positive indexes.
7. The three-dimensional power grid training simulation method based on the virtual reality technology according to claim 1, wherein in the sixth step, the substation scene model is stored in a database demonstration library and modified as required; meanwhile, the modified model covers the original example and is used as a simulation file to be stored separately; sharing communication and evaluation are also carried out through a user sharing function;
setting Powersystem, element related basic source libraries in the database according to the category to which the equipment library belongs; the Powersystem comprises a main transformer, a bus, a circuit breaker, an isolating switch and transformer substation equipment, and the elements comprise various inductances, capacitances and resistances;
the substation simulation method comprises the following steps: the database searches various electrical parameter phenomena in the database according to the instruction of an operator and by means of the electrical quantity contained in the instruction, acquires a part corresponding to the current running state, plays a video through a screen, and automatically records and transmits the video to a history record sub-database of the database;
the operation condition of the equipment in the transformer substation corresponding to the current video is called through the screen interface selection keys, wherein the operation condition comprises current, voltage real-time numerical values, temperature, electric field and magnetic field distribution, and the operation condition is displayed in a plurality of different window interfaces.
8. An information data processing terminal for implementing the three-dimensional power grid training simulation method based on the virtual reality technology according to any one of claims 1 to 7.
9. A computer readable storage medium comprising instructions that when run on a computer cause the computer to perform the virtual reality technology-based three-dimensional grid training simulation method of any of claims 1-7.
10. A three-dimensional power grid training simulation system based on virtual reality technology for implementing the three-dimensional power grid training simulation method based on virtual reality technology as set forth in any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010356467.5A CN111553079B (en) | 2020-04-29 | 2020-04-29 | Three-dimensional power grid training simulation method based on virtual reality technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010356467.5A CN111553079B (en) | 2020-04-29 | 2020-04-29 | Three-dimensional power grid training simulation method based on virtual reality technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111553079A CN111553079A (en) | 2020-08-18 |
| CN111553079B true CN111553079B (en) | 2023-06-09 |
Family
ID=72006176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010356467.5A Active CN111553079B (en) | 2020-04-29 | 2020-04-29 | Three-dimensional power grid training simulation method based on virtual reality technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111553079B (en) |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101894488A (en) * | 2009-07-15 | 2010-11-24 | 上海市电力公司超高压输变电公司 | Distributed three-dimensional simulation training system for regional power system transformer station |
| CN102436766A (en) * | 2011-12-15 | 2012-05-02 | 成都运达科技股份有限公司 | Simulation training system of relay protection in subway OCC power dispatching and method thereof |
| CN102819861A (en) * | 2012-07-25 | 2012-12-12 | 广州供电局有限公司 | Power system three-dimensional device scene modeling method |
| CN104065398A (en) * | 2014-07-03 | 2014-09-24 | 重庆大学 | Design method and system of electric power information communication network convergence test platform |
| CN104103088A (en) * | 2014-07-19 | 2014-10-15 | 国家电网公司 | Three-dimensional display of internal structure of transformer substation and three-dimensional animation demonstration method of working principle |
| CN104205264A (en) * | 2012-01-23 | 2014-12-10 | 犹他州立大学 | Wireless power transfer system |
| CN105139714A (en) * | 2015-10-10 | 2015-12-09 | 国电南瑞科技股份有限公司 | Visualized simulation training system and method for electrified railway traction substation |
| RU2617972C1 (en) * | 2016-03-09 | 2017-04-28 | Публичное акционерное общество "Межрегиональная распределительная сетевая компания Центра" | Simulator for operational and maintenance staff on the basis of virtual reality models of transformer substation |
| CN107966672A (en) * | 2017-12-05 | 2018-04-27 | 国网重庆市电力公司电力科学研究院 | The generator power transmitter test method and system of meter and synchronous phasor measurement |
| CN108022039A (en) * | 2017-11-21 | 2018-05-11 | 国家电网公司 | A kind of Substation Training Simulator based on augmented reality |
| CN108172055A (en) * | 2017-12-07 | 2018-06-15 | 国网甘肃省电力公司天水供电公司 | A kind of substation's three-dimensional artificial scene automatic generation method |
| CN109190305A (en) * | 2018-10-19 | 2019-01-11 | 国网四川省电力公司电力科学研究院 | Panorama real-time emulation method for electric system |
| CN110471979A (en) * | 2019-07-03 | 2019-11-19 | 国电南瑞科技股份有限公司 | Analogue system is shown with the electric network information excavated based on multi-source emulation data aggregation |
| CN110673509A (en) * | 2019-09-19 | 2020-01-10 | 中国电力科学研究院有限公司 | Electric quantity transmitter simulation system and method for semi-physical simulation platform |
| CN110852344A (en) * | 2019-09-27 | 2020-02-28 | 武汉船舶职业技术学院 | Intelligent substation network fault classification based method |
| CN110879543A (en) * | 2019-12-31 | 2020-03-13 | 清华四川能源互联网研究院 | Real-time hybrid simulation platform of electric power system |
-
2020
- 2020-04-29 CN CN202010356467.5A patent/CN111553079B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101894488A (en) * | 2009-07-15 | 2010-11-24 | 上海市电力公司超高压输变电公司 | Distributed three-dimensional simulation training system for regional power system transformer station |
| CN102436766A (en) * | 2011-12-15 | 2012-05-02 | 成都运达科技股份有限公司 | Simulation training system of relay protection in subway OCC power dispatching and method thereof |
| CN104205264A (en) * | 2012-01-23 | 2014-12-10 | 犹他州立大学 | Wireless power transfer system |
| CN102819861A (en) * | 2012-07-25 | 2012-12-12 | 广州供电局有限公司 | Power system three-dimensional device scene modeling method |
| CN104065398A (en) * | 2014-07-03 | 2014-09-24 | 重庆大学 | Design method and system of electric power information communication network convergence test platform |
| CN104103088A (en) * | 2014-07-19 | 2014-10-15 | 国家电网公司 | Three-dimensional display of internal structure of transformer substation and three-dimensional animation demonstration method of working principle |
| CN105139714A (en) * | 2015-10-10 | 2015-12-09 | 国电南瑞科技股份有限公司 | Visualized simulation training system and method for electrified railway traction substation |
| RU2617972C1 (en) * | 2016-03-09 | 2017-04-28 | Публичное акционерное общество "Межрегиональная распределительная сетевая компания Центра" | Simulator for operational and maintenance staff on the basis of virtual reality models of transformer substation |
| CN108022039A (en) * | 2017-11-21 | 2018-05-11 | 国家电网公司 | A kind of Substation Training Simulator based on augmented reality |
| CN107966672A (en) * | 2017-12-05 | 2018-04-27 | 国网重庆市电力公司电力科学研究院 | The generator power transmitter test method and system of meter and synchronous phasor measurement |
| CN108172055A (en) * | 2017-12-07 | 2018-06-15 | 国网甘肃省电力公司天水供电公司 | A kind of substation's three-dimensional artificial scene automatic generation method |
| CN109190305A (en) * | 2018-10-19 | 2019-01-11 | 国网四川省电力公司电力科学研究院 | Panorama real-time emulation method for electric system |
| CN110471979A (en) * | 2019-07-03 | 2019-11-19 | 国电南瑞科技股份有限公司 | Analogue system is shown with the electric network information excavated based on multi-source emulation data aggregation |
| CN110673509A (en) * | 2019-09-19 | 2020-01-10 | 中国电力科学研究院有限公司 | Electric quantity transmitter simulation system and method for semi-physical simulation platform |
| CN110852344A (en) * | 2019-09-27 | 2020-02-28 | 武汉船舶职业技术学院 | Intelligent substation network fault classification based method |
| CN110879543A (en) * | 2019-12-31 | 2020-03-13 | 清华四川能源互联网研究院 | Real-time hybrid simulation platform of electric power system |
Non-Patent Citations (3)
| Title |
|---|
| 朱钧剑 ; 钱雪军 ; .地铁电力调度监控***的仿真研究.铁路计算机应用.2018,第27卷(第05期),第13-17页. * |
| 罗义钊 ; 陈彪 ; .智能变电站实时测试仿真***的实现及应用.电子设计工程.2016,第24卷(第24期),第98-101页. * |
| 郭伟 ; .66kV数字物理混合仿真培训变电站的开发.吉林省教育学院学报(上旬).2012,第28卷(第08期),第152-154页. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111553079A (en) | 2020-08-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103794109B (en) | There is electric control system and the emulation training method thereof of emulation training function | |
| CN102054377A (en) | Remote simulation training system for electrical tests of transformer | |
| CN106775746A (en) | A kind of intelligent substation three-dimensional artificial training soft ware system and its platform building method | |
| CN106920432A (en) | The simulation training system and emulation training method of substation equipment maintenance | |
| CN106251033A (en) | A kind of intelligent substation operation management system | |
| CN104867058A (en) | IED visualization method of intelligent transformer substation SCD file | |
| CN103632581A (en) | Debugging, operation and maintenance simulation method of electric energy collection terminals | |
| CN109697903A (en) | A kind of substation relay protection safety practical training method based on VR | |
| CN112650808B (en) | Transformer substation anti-error logic visualization method capable of realizing real-time verification and simulation verification | |
| CN110211445B (en) | Power distribution network load transfer control application training system | |
| CN110310530A (en) | Insulation of electrical installation test simulation training holography teacher's system based on the interaction of ring curtain | |
| CN110389535B (en) | Configuration type dynamic simulation test system and test method thereof | |
| CN116580610A (en) | Virtual transformer station operation and maintenance VR training and real training system | |
| CN111553079B (en) | Three-dimensional power grid training simulation method based on virtual reality technology | |
| Sidhu et al. | Generating relay models for protection studies | |
| CN112991859A (en) | 10kV switch cabinet oriented relay protection operation and maintenance training method | |
| CN110992761A (en) | VR-based pump station operation simulation training and examination system and method | |
| CN113158382B (en) | Computer-aided decision support system for power grid planning | |
| Nativel et al. | Integrated framework for voltage security assessment | |
| CN112578315A (en) | Control loop disconnection fault judgment method based on matrix diagram | |
| Wu et al. | Research on simulation training system for substation equipment maintenance | |
| CN112578684A (en) | Intelligent Internet of things terminal simulation device | |
| Kezunovic | Intelligent applications in substations disturbance analysis | |
| JPH0974675A (en) | Power system monitoring device | |
| CN110706566A (en) | Virtual display training navigation integrated system of substation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |