CN112991859A - 10kV switch cabinet oriented relay protection operation and maintenance training method - Google Patents
10kV switch cabinet oriented relay protection operation and maintenance training method Download PDFInfo
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Abstract
A10 kV switch cabinet oriented relay protection operation and maintenance training method belongs to the field of simulation devices. Constructing a complete three-dimensional model of the switch cabinet; importing the three-dimensional model into a three-dimensional engine; constructing a three-dimensional model of a tool required by relay protection operation and maintenance according to the requirement of a training project, and importing the three-dimensional model into a three-dimensional engine; selecting an appropriate interactive tool according to the training project and designing an interactive mode; developing corresponding functions in a three-dimensional engine according to the training items; secondary loop identification and drawing three-dimension; simulation of relay protection checking work is realized; the simulation method has the advantages that the simulation of the primary and secondary equipment states and the simulation of the primary and secondary operation and maintenance operation and repair operations are realized, and the complete simulation of troubleshooting of fault phenomena, troubleshooting operations, restoration to a normal state after troubleshooting and relay protection operation and maintenance training can be realized. Provides a training method with high efficiency and low cost for each professional operation and maintenance personnel. The method can be widely applied to the technical training field of electric power operation and maintenance personnel.
Description
Technical Field
The invention belongs to the field of simulation devices for teaching or training, and particularly relates to a relay protection operation and maintenance training method for a 10kV switch cabinet.
Background
In recent years, the forms of power grid operation and maintenance services and the compositions of power grid operation and maintenance personnel are undergoing great changes. In the aspect of operation and maintenance services, along with the rapid expansion of the scale of a power grid, the operation and maintenance technology is rapidly updated, and the types of the operation and maintenance services become more, so that the traffic of the traditional services and the novel services of an operation and maintenance department are increased simultaneously, and particularly in a secondary operation and maintenance department, the types of the newly increased services are more, so that the traffic is multiplied. In the aspect of personnel composition, the proportion of young personnel is increased year by year, and the growth period of the skill of newly-entered maintainers is too long to meet the requirement under the existing training condition and working mode; on the other hand, in the new situation of multiple service types and fast technology updating, the skilled maintainers also need to be familiar with new equipment and new services, so that a training method needs to be innovated, and a new training means and a new training tool are searched.
The traditional electric power operation and maintenance and overhaul training mode can be divided into training center training and working site training. The training center has limited training equipment quantity and types, centralized training time, high economic cost, less training chance and short training time. The training of the working site is not used for operation and practice because the equipment is in the running state most of the time, and the equipment has few faults or accidents, so that students can see the equipment with eyes and have few accidents with hands. Therefore, the method adopting the field training has slow effect and poor effect, can not completely eliminate the possibility of production loss caused by misoperation of trained personnel, has high training cost, high training difficulty, long time, low efficiency, poor pertinence and timeliness and difficult organization, and is a main factor which troubles the operation and maintenance post training work for a long time.
The development of the three-dimensional simulation application technology of the power equipment provides an efficient method for guiding operation and maintenance operation and training business skills. By constructing the three-dimensional model, a power equipment overhaul scene is created in a computer, so that part of related researches on training modes for trainees to practice in the three-dimensional digital environment, such as power related training based on virtual reality technology, are available, and the three-dimensional simulation training system has the advantages that:
1) the three-dimensional scene is stereoscopic and visual, and can be highly similar to the actual working environment;
2) partial interaction functions can be realized, such as the movement of the whole equipment, the assembly and disassembly of equipment parts, the display of signals and the like;
3) the centralized training cost of frequently going to a training site by a student is reduced;
4) safety risks such as electric shock and mechanical injury in electric power training are avoided. Therefore, power training based on three-dimensional scenes is rapidly developing.
Currently, there are related studies and practices.
For example, in chinese patent application publication No. CN 109410679 a, application publication No. 2019.03.01 discloses an "extra-high voltage main equipment three-dimensional simulation training system", which includes a trainee training unit, and the trainee training unit includes an equipment model generation sub-module, an equipment explanation training module, a database, an equipment typical fault training module, and a preventive test training module. The equipment model generation submodule is used for generating an extra-high voltage main equipment model according to the appearance structure and the internal structure of the extra-high voltage main equipment; the equipment explanation training module is used for demonstrating the disassembly and assembly process of the extra-high voltage main equipment model; the database is used for storing test information of standardized maintenance process and preventive test of at least one typical fault; the equipment typical fault training module is used for displaying a standardized overhaul process and judging whether the student operates correctly according to the standardized overhaul process; the preventive test training module is used for displaying test information and judging whether the operation of the student is correct according to the test information of the preventive test. However, the related maintenance process simulation in the technical scheme only aims at the electrical test work of the primary system of the extra-high voltage main equipment, and only relates to a primary mechanical part, for example, "typical faults include an SF6 sulfur hexafluoride leakage fault, an arc extinguishing chamber burst fault, a closing rejection fault, a converter transformer body fault, a network side pressure equalizing pipe suspension discharge fault and a pressure release valve action fault", and the simulation of the secondary system is not related.
The relay protection training simulation not only needs the simulation of the state action of primary equipment, but also needs the state and control simulation of a secondary part alternating current-direct current loop.
In the aspect of three-dimensional simulation of an alternating current-direct current loop, a Chinese patent invention with an issued publication date of 2020.08.07 and an issued publication number of CN110989398B discloses an electrical control circuit simulation system, which comprises: the three-dimensional model building module is used for building a circuit three-dimensional model according to the input electric control circuit diagram; the virtual actuator can change the circuit three-dimensional model within a specified range after establishing a relationship with each element in the three-dimensional model building module; the simulation analysis module is used for calling a corresponding simulation analysis algorithm to drive the virtual actuator to realize the simulation analysis of the circuit three-dimensional model according to the input electric control circuit control target parameters; and the virtual sensor is a logic unit which is inserted into the circuit three-dimensional model and can directly acquire a corresponding result, and is used for directly displaying a simulation analysis result in an electrical parameter mode. The technical scheme avoids the problems that the efficiency of using actual electrical equipment to build a circuit is low, potential safety hazards exist, and simulation analysis results cannot be directly obtained.
The electric power operation and maintenance and overhaul training can be divided into maintenance and overhaul of primary equipment and maintenance and overhaul of secondary equipment on the whole, namely relay protection operation and maintenance and overhaul. The primary equipment focuses on inspection, appearance inspection, internal structure inspection, mechanical state inspection, mechanical operation, and the like, and the secondary equipment focuses on secondary circuit inspection, relay protection logic inspection, equipment electrical parameter inspection, and the like. Through research and discovery, the virtual reality technology is mostly adopted in the current three-dimensional scene training related to electric power, the simulation scene is mostly the three-dimensional simulation of the equipment and the environment where the equipment is located, the training content is mostly the items related to one-time operation and maintenance overhaul such as equipment inspection and mechanical disassembly and assembly, and the training of the three-dimensional scene related to relay protection is rarely researched.
The existing three-dimensional training method has the following defects:
1) the virtual reality technology is not mature enough, the interaction capacity is limited, the interaction fineness and the interaction efficiency are required to be improved, the virtual reality technology is used for basic inspection, and basic equipment disassembly can meet the requirements but cannot meet the application of relay protection operation and maintenance. The relay protection operation and maintenance equipment is small in size, large in number and dense in distribution, for example, the width of a terminal row connecting sheet is less than one centimeter, and hundreds of experimental terminals are often arranged in a switch cabinet relay protection cabin.
2) The training of the virtual reality technology needs special hardware equipment, the training is still not convenient enough, the learning cost of the equipment is high, and the equipment needs additional practice and familiarity. On the other hand, the number of people who use the device at the same time is limited by the number of hardware devices.
3) At present, although partial three-dimensional circuit simulation tools appear, the algorithm is too complex and is not suitable for simulation of a switch cabinet secondary circuit. The switch cabinet secondary circuit consists of a plurality of complex alternating current and direct current circuits, wherein the circuit is provided with dozens of parts for manual control or machine control, basically all elements are in on-off states, the efficiency of an excessively complex simulation algorithm is low, and the real-time calculation requirement of the switch cabinet secondary circuit cannot be met.
The 10kV switch cabinet is a key device in a medium-voltage distribution network, and the using amount is large. The number of the power distribution networks is dozens of times of that of power equipment such as transformers, capacitors, reactors and the like. A large percentage of the operations and maintenance work of the operation and maintenance department of the electric power company is spread around the switch cabinets. And the switch cabinet has high integration level, and a cabinet body contains key primary components such as a bus, a switch, a handcart, a ground knife and the like, and also contains a complete secondary system which comprises a microcomputer protection device, a secondary cable, a pressing plate, various control buttons, an air switch, a test terminal and the like. The main work content of the relay protection operation and maintenance simulation can be covered in the equipment of the switch cabinet, which is generally considered to be impossible to realize by a transformer of main equipment of a power grid.
In the actual training work, how to use the switch cabinet as an object is to provide a 10kV switch cabinet-oriented relay protection operation and maintenance training method based on a three-dimensional simulation application technology, which is a practical technical problem to be solved urgently.
Disclosure of Invention
The invention aims to solve the technical problem of providing a 10kV switch cabinet-oriented relay protection operation and maintenance training method. The three-dimensional simulation application technology is based on, and the three-dimensional design of a 10kV switch cabinet secondary circuit schematic diagram and a wiring diagram can be realized; mechanical action simulation under the 'normal state, instantaneous ground fault and permanent ground fault state' of a 10kV line and simulation of the state (including current and voltage sampling values, protection action conditions, signal sending state and the like) of a relay protection device are realized; the analog measurement of the voltage and the current of the secondary loop is realized; the desktop end and the mobile end of the 10kV switch cabinet relay protection verification visual simulation module based on the three-dimensional live-action model are developed, and the functions of secondary loop three-dimensional identification, secondary loop electrification state simulation, secondary voltage and current simulation measurement and basic relay protection verification simulation are achieved.
The technical scheme of the invention is as follows: the relay protection operation and maintenance training method for the 10kV switch cabinet is characterized by comprising the following steps:
the first step is as follows: firstly, constructing a complete three-dimensional model of the switch cabinet;
the second step is that: importing the three-dimensional model into a three-dimensional engine;
the third step: according to the requirements of training projects, building three-dimensional models of all tools required by relay protection operation and maintenance, and importing the three-dimensional models into a three-dimensional engine;
the fourth step: selecting an appropriate interactive tool and designing an interactive mode according to the training project;
the fifth step: developing a corresponding function in a three-dimensional engine according to the training items;
and a sixth step: secondary loop identification and drawing three-dimension;
the seventh step: simulation of relay protection checking work is realized;
eighth step: in a three-dimensional space, primary and secondary equipment state simulation, primary and secondary operation and maintenance operation simulation and normal operation are realized, and fault phenomenon troubleshooting, fault removing operation, complete simulation of recovering to a normal state after troubleshooting and relay protection operation and maintenance training can be realized.
Specifically, in the first step, a complete three-dimensional model of the switch cabinet is constructed, including modeling all parts involved in operation and maintenance work, and all parts involved in operation and maintenance work can be detached to form an independent three-dimensional model.
Specifically, in the second step, a training project is designed according to the functional characteristics of the three-dimensional engine and the requirements of the switch cabinet for relay protection operation and maintenance work, a three-dimensional visual development environment is provided, and a logic function is realized through programming.
And in the third step, all tools required by the relay protection operation and maintenance comprise a universal meter, a clamp meter, a screwdriver, a short-circuit wire, test cables with different capacities, a handcart rocker, a ground knife pressure rod, an unlocking key, a handcart and a relay protection calibrator.
Further, in the third step, Unity3D is used as the three-dimensional engine.
Further, in the fourth step, a PC, a large-screen television, a Pad and a mobile phone are selected as interactive tools; aiming at the characteristics of the four platforms, corresponding interaction modes are respectively designed; the PC end adopts mouse interaction, and the large-screen television, the Pad end and the mobile phone end adopt touch screens for interaction.
Specifically, in the sixth step, the secondary schematic diagram of the switch cabinet is manually identified, all cables and elements on the schematic diagram correspond to the three-dimensional models one by one, the schematic diagram is segmented according to the entity of the three-dimensional model, finally, any part of the secondary equipment has a corresponding element or cable in the schematic diagram, finally, the corresponding three-dimensional model can be retrieved by clicking a drawing unit, and the corresponding unit on the drawing can be retrieved by clicking the three-dimensional model.
Further, in the seventh step, the simulation of the relay protection verification work includes simulation of the operation state of the primary equipment of the switch cabinet, simulation of the operation state of the secondary equipment, simulation of a relay protection verification instrument, and simulation of a relay protection verification tool.
According to the technical scheme, the three-dimensional models of all tools required by relay protection operation and maintenance are constructed by utilizing the three-dimensional models of the electrical equipment according to the requirements of relay protection operation and maintenance training projects, and the three-dimensionality of a 10kV switch cabinet secondary circuit schematic diagram and a wiring diagram is realized; mechanical action simulation under the 'normal state, instantaneous ground fault and permanent ground fault' state of the 10kV line and simulation of the state of the relay protection device are realized; the analog measurement of the voltage and the current of the secondary loop is realized; the desktop end and the mobile end of the 10kV switch cabinet relay protection verification visual simulation module based on the three-dimensional live-action model are built, the functions of secondary loop three-dimensional identification, secondary loop electrified state simulation, secondary voltage and current simulation measurement and basic relay protection verification simulation are achieved, and a good platform for rapidly accumulating fault elimination experience is provided for employees lacking in site actual work experience.
The relay protection operation and maintenance training method provided by the invention realizes relay protection operation and maintenance training of the 10kV switch cabinet by utilizing the three-dimensional models of the electrical equipment and by means of the three-dimensional models of all tools required by relay protection operation and maintenance and the three-dimensionality of a 10kV switch cabinet secondary circuit schematic diagram and a wiring diagram.
Compared with the prior art, the invention has the advantages that:
1. the technical scheme realizes the three-dimensional function of the secondary circuit of the 10kV switch cabinet, realizes three-dimensional visualization of a two-dimensional drawing, and provides a brand-new secondary circuit identification and maintenance training method;
2) the technical scheme realizes the three-dimensional simulation of the state of the secondary circuit of the 10kV switch cabinet, and can measure the potential of a control circuit and a signal circuit under different running conditions and the current of an alternating current circuit;
3) the technical scheme realizes three-dimensional visual simulation of the electrical state of a mechanical action, a signal sending state and a primary system in the normal state, the instantaneous ground fault and the permanent ground fault states of the 10kV switch cabinet;
4) according to the technical scheme, simulation of relay protection calibration work of the 10kV switch cabinet is achieved, tools necessary for maintenance work such as a universal meter, a clamp meter, a test cable, a screwdriver and a relay protection calibration instrument can be used, and typical relay protection calibration work including connection of sampling current, calibration of protection function, anti-jump test and the like is completely simulated in a three-dimensional space.
Drawings
FIG. 1 is a block diagram of a relay protection operation and maintenance training method;
FIG. 2 is a schematic diagram of a simulation logic of a primary device operating state according to the present invention;
FIG. 3 is a schematic diagram of simulation logic of a live operation state of an A-phase outgoing cable;
fig. 4 is a schematic diagram of a simulation process of the operating state of the secondary device according to the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
In fig. 1, the technical scheme of the present invention is performed according to the following steps:
the first step is as follows: firstly, a complete three-dimensional model of the switch cabinet is constructed. All models achieved screw grade graininess. The following standards should be met in terms of model integrity: all parts related to operation and maintenance work are modeled. The particle size reaches the following standard: all parts related to the operation and maintenance work can be separated, and the model is an independent model.
The second step is that: and importing the three-dimensional model into a three-dimensional engine. And designing a training project according to the functional characteristics of the three-dimensional engine and the requirements of the switch cabinet on relay protection operation and maintenance work.
The third step: and constructing a three-dimensional model of all tools required by the relay protection operation and maintenance according to the requirements of the training project, and importing the three-dimensional model into a three-dimensional engine.
The fourth step: and selecting an applicable interactive tool and designing an interactive mode according to the training program.
The fifth step: and developing a corresponding function in the three-dimensional engine according to the training program.
Wherein, Unity3D is adopted as the three-dimensional engine of the technical proposal.
In the first step, in order to ensure the integrity, the accuracy and the granularity of the three-dimensional model of the switch cabinet, three-dimensional modeling is carried out by adopting a method of combining a three-dimensional laser radar scanning switch cabinet entity, a field shooting image, a design drawing and a schematic drawing.
The three-dimensional laser radar scanning is adopted to build a basic three-dimensional space and ensure the accuracy of key mechanical parts.
The field shooting image is used for acquiring a detail part which is difficult to scan, acquiring a texture picture and preparing for switch cabinet mapping, and finally constructing a real-scene model which is consistent with the appearance of a physical entity switch cabinet.
The design drawing is used for obtaining the whole mechanical design structure of the switch cabinet and providing direct and mechanical structure reference for three-dimensional modeling.
The schematic diagram is to guide modeling of a secondary circuit, and because the secondary circuit is dense and complex, the connection relationship cannot be accurately restored by only depending on images and scanning data, and therefore a three-dimensional model of a secondary system must be correctly constructed by combining the secondary schematic diagram.
In the industrial field, the three-dimensional laser scanner is mainly used for three-dimensional modeling, reverse engineering, three-dimensional detection and product design, and the prior art is already available, so that how to carry out three-dimensional scanning on a mechanical part by using a three-dimensional laser radar and specific operation steps are not described, and technical personnel in the field can carry out related three-dimensional scanning modeling work according to product specifications of the three-dimensional laser radar scanning device.
For the second step, the functional characteristics of the three-dimensional engine are mainly to provide a three-dimensional visualization development environment and to realize logic functions through programming.
The operation and maintenance work requirement of the switch cabinet for relay protection is mainly embodied in the simulation of equipment three-dimensional structure checking, part retrieval, principle reappearance of mechanical action, secondary circuit identification and relay protection checking work.
The main training functions thus designed are as follows:
and viewing the three-dimensional structure of the equipment, and displaying all parts in a perspective, hidden and isolated manner.
And (4) retrieving the parts, setting a part account, and retrieving all the parts through a catalogue.
The principle of mechanical action reappears, the most important mechanical action mechanism in the switch cabinet is the circuit breaker, so that all actions of all movable parts in the circuit breaker are made into three-dimensional animation, the operation principle of equipment is watched through the animation, and the reverse function is arranged, so that the action principle of complex machinery is convenient to understand.
The identification of the secondary circuit is an important content of the invention, the conventional secondary circuit identification training can be only deployed at a working site, and the specific distribution of the secondary circuit cannot be clarified through schematic diagrams or photos. Therefore, the invention designs the drawing three-dimensional function, introduces the secondary schematic diagram into the three-dimensional engine, corresponds the schematic diagram with the three-dimensional model and carries out training in a three-dimensional form.
In order to realize the function, the simulation of the operation state of the primary equipment, the simulation of the operation state of the secondary equipment, the simulation of a relay protection calibration instrument and the simulation of a relay protection calibration tool of the switch cabinet need to be developed.
And in the third step, all tools required by relay protection calibration are investigated, wherein the tools comprise a universal meter, a clamp meter, a screwdriver, a short-circuit wire, test cables with different capacities, a handcart rocker, a ground knife pressure bar, an unlocking key, a handcart and a relay protection calibration instrument. The three-dimensional model of the instrument and the tool is built, and the movable parts are required to be consistent with the reality and the appearance is required to be consistent with the reality.
And for the fourth step, in order to realize the real convenient use of the tool, selecting a pc, a large-screen television, a pad and a mobile phone as interactive tools. And aiming at the characteristics of the four platforms, corresponding interaction modes are respectively designed. Mouse interaction is adopted at the pc end, and touch screens are adopted at the large-screen television, the pad and the mobile phone end for interaction. The interaction on the touch screen is designed in a differentiation mode according to different screen sizes. The principle of all interaction design is to simplify the operation and to complete all functions with the most common interactions.
The interaction of the mouse comprises: left click, right click, roller click, long right click and roller scroll.
The interaction of the touch screen comprises: clicking the screen, sliding by a single finger, sliding by two fingers and zooming by two fingers.
The interaction of the large-screen television comprises the following steps: clicking the screen, moving with one finger, sliding with five fingers, and zooming with two hands.
For the fifth step, the main functions developed are as follows:
approximately 4000 parts are named and grouped by function, with unique names assigned in groups. And setting a part account according to the name, and searching all function groups through a catalogue. And the hiding and the isolation of the model are realized through the standing book.
Secondary loop identification and drawing three-dimension. And manually identifying the secondary schematic diagram of the switch cabinet, corresponding all cables and elements on the graph paper to the three-dimensional model one by one, and segmenting the graph paper according to the entity of the three-dimensional model, so that any part of the secondary equipment has a corresponding element or cable in the schematic diagram. This step can be understood as differentiating the three-dimensional space and the two-dimensional space, respectively, and corresponding the differentiated cells one to one. Finally, clicking the drawing unit to retrieve the corresponding three-dimensional model, and clicking the three-dimensional model to retrieve the corresponding unit on the drawing.
Simulation of relay protection verification work:
function one: setting primary equipment states including the magnitude, frequency and phase of bus voltage; the magnitude and phase of the outgoing line current; a mechanical position of the handcart; a mechanical state of the circuit breaker; the mechanical state of the grounding knife switch. The above parameters jointly determine the state of the primary equipment, the parameters are input into a simulation algorithm, and the final operation state is determined by the algorithm. The specific technical solution of this function is shown in fig. 2.
Fig. 3 shows a simulation logic diagram of the operation state of a specific primary device (taking the charged operation state of the a-phase outgoing cable as an example in the figure).
And a second function: and (3) simulating the running state of the secondary equipment:
the components in the secondary circuit basically have two states, namely on and off. The on-off of part of parts is influenced by the state of primary equipment, for example, the mechanical position of a circuit breaker can influence the on-off of an auxiliary node in a secondary circuit, and the other part of elements are influenced by artificial setting, for example, a pressing plate is manually opened or closed, so that the relay protection function can be disabled or opened. The specific solution of this function is shown in fig. 4.
And function III: simulation of a relay protection calibration instrument and a tool:
in order to restore the operation and maintenance work of the relay protection realistically in a three-dimensional space, the simulation of a real tool is required, and the setting and input of all states should be the same as the real state. For example, in a simulation tool, the current value to be input to the microcomputer protection device can be set by simply typing a number, but this is not possible in reality. In reality, experimental current is input through the relay protection calibrator, so that in the three-dimensional simulation tool, current is input through the relay protection calibrator, and a current test wire needs to be connected. Therefore, in order to perform simulation of instruments and tools, the adopted technical scheme is to divide all the instruments of the tools into two types of state input and state sensing. The input parameters required for the operation of the primary equipment and the secondary loop are input in the form of instruments and tools instead of being directly set. Of course, there are also some instruments that are not used for input, but rather for sensing output.
All instruments were classified as follows:
and (3) state input: the device comprises a screwdriver, a short-circuit wire, test cables with different capacities, a handcart rocker, a ground knife pressure bar, an unlocking key, a handcart and a relay protection calibrator.
And (3) state perception: multimeters, pincerlike meters, and microcomputer protection devices.
The innovation points of the technical scheme of the invention are summarized as follows:
the technical scheme realizes the unification of the simulation of the primary and secondary operation and maintenance work of the electrical equipment for the first time. In other words, primary and secondary equipment state simulation and primary and secondary operation and maintenance operation simulation are realized in a software tool or a three-dimensional space. And the non-script simulation is an open view of the power equipment. Therefore, normal operation can be realized, and complete simulation of troubleshooting, troubleshooting operation and recovery to a normal state after troubleshooting can also be realized.
According to the technical scheme, three-dimensional modeling is carried out by adopting a method of combining three-dimensional laser radar scanning switch cabinet entity, field shooting image, design drawing and schematic drawing; the electrical equipment three-dimensional model is utilized to realize the three-dimensionality of a 10kV switch cabinet secondary circuit schematic diagram and a wiring diagram; the simulation of mechanical actions of a 10kV line in a normal state, an instantaneous ground fault state and a permanent ground fault state is realized, and the simulation of the state of a relay protection device (comprising a current and voltage sampling value, a protection action condition, a signal sending state and the like) is realized; the analog measurement of the voltage and the current of the secondary loop is realized; the desktop end and the mobile end of a 10kV switch cabinet relay protection verification visual simulation module based on a three-dimensional live-action model are developed, and the functions of secondary loop three-dimensional identification, secondary loop electrification state simulation, secondary voltage and current simulation measurement and basic relay protection verification simulation are achieved. The technical scheme has smooth operation and low requirement on hardware, can be used as a general training method, provides a high-efficiency and low-cost training method for each professional operation and maintenance worker, and provides a good platform for rapidly accumulating default troubleshooting experience for young workers lacking working experience.
The invention can be widely applied to the technical training field of electric power operation and maintenance personnel.
Claims (10)
1. A10 kV switch cabinet oriented relay protection operation and maintenance training method is characterized by comprising the following steps:
the first step is as follows: firstly, constructing a complete three-dimensional model of the switch cabinet;
the second step is that: importing the three-dimensional model into a three-dimensional engine;
the third step: according to the requirements of training projects, building three-dimensional models of all tools required by relay protection operation and maintenance, and importing the three-dimensional models into a three-dimensional engine;
the fourth step: selecting an appropriate interactive tool and designing an interactive mode according to the training project;
the fifth step: developing a corresponding function in a three-dimensional engine according to the training items;
and a sixth step: secondary loop identification and drawing three-dimension;
the seventh step: simulation of relay protection checking work is realized;
eighth step: in a three-dimensional space, primary and secondary equipment state simulation, primary and secondary operation and maintenance operation simulation and normal operation are realized, and the fault troubleshooting phenomenon, the fault troubleshooting operation, the complete simulation for recovering the normal state after discharge and the relay protection operation and maintenance training can be realized.
2. The relay protection operation and maintenance training method for the 10kV switch cabinet as claimed in claim 1, wherein in the first step, a complete three-dimensional model of the switch cabinet is constructed, all parts involved in the operation and maintenance work are modeled, and all parts involved in the operation and maintenance work are detachable to form an independent three-dimensional model.
3. The relay protection operation and maintenance training method for the 10kV switch cabinet as claimed in claim 1, wherein in the second step, training items are designed according to the functional characteristics of the three-dimensional engine and the requirements of the relay protection operation and maintenance work of the switch cabinet, a three-dimensional visual development environment is provided, and a logic function is realized through programming.
4. The 10kV switch cabinet-oriented relay protection operation and maintenance training method according to claim 1, wherein in the third step, all tools required for relay protection operation and maintenance comprise a universal meter, a clamp meter, a screwdriver, a short wire, test cables with different capacities, a handcart rocker, a ground knife pressure bar, an unlocking key, a handcart and a relay protection calibrator.
5. The training method for relay protection operation and maintenance facing a 10kV switch cabinet as claimed in claim 1, wherein in the third step, Unity3D is used as the three-dimensional engine.
6. The relay protection operation and maintenance training method facing a 10kV switch cabinet as claimed in claim 1, wherein in the fourth step, a PC, a large-screen television, a Pad and a mobile phone are selected as interactive tools; aiming at the characteristics of the four platforms, corresponding interaction modes are respectively designed;
the PC end adopts mouse interaction, and the large-screen television, the Pad end and the mobile phone end adopt touch screens for interaction.
7. The relay protection operation and maintenance training method for the 10kV switch cabinet as claimed in claim 1, wherein in the sixth step, the secondary schematic diagram of the switch cabinet is manually identified, all cables and elements on the drawing paper correspond to the three-dimensional model one to one, the drawing paper is divided according to the entity of the three-dimensional model, finally, any part of the secondary equipment has a corresponding element or cable in the schematic diagram, finally, the corresponding three-dimensional model can be retrieved by clicking a drawing unit, and the corresponding unit on the drawing can be retrieved by clicking the three-dimensional model.
8. The relay protection operation and maintenance training method for the 10kV switch cabinet as claimed in claim 1, wherein in the seventh step, the simulation of the relay protection verification work comprises simulation of a primary device operation state of the switch cabinet, simulation of a secondary device operation state, simulation of a relay protection verification instrument, and simulation of a relay protection verification tool.
9. The relay protection operation and maintenance training method facing the 10kV switch cabinet as claimed in claim 1, wherein three-dimensional models of all tools required by relay protection operation and maintenance are constructed by using the three-dimensional models of the electrical equipment according to the requirements of relay protection operation and maintenance training projects, so that the three-dimensionality of a 10kV switch cabinet secondary circuit schematic diagram and a wiring diagram is realized; mechanical action simulation under the 'normal state, instantaneous ground fault and permanent ground fault' state of the 10kV line and simulation of the state of the relay protection device are realized; the analog measurement of the voltage and the current of the secondary loop is realized; the desktop end and the mobile end of the 10kV switch cabinet relay protection verification visual simulation module based on the three-dimensional live-action model are built, the functions of secondary loop three-dimensional identification, secondary loop electrified state simulation, secondary voltage and current simulation measurement and basic relay protection verification simulation are achieved, and a good platform for rapidly accumulating fault elimination experience is provided for employees lacking in site actual work experience.
10. The training method for relay protection operation and maintenance facing a 10kV switch cabinet according to claim 1, wherein the training method for relay protection operation and maintenance is used for realizing the training for relay protection operation and maintenance of the 10kV switch cabinet by utilizing a three-dimensional model of electrical equipment and by means of three-dimensional models of all tools required for relay protection operation and maintenance and three-dimensionalization of a 10kV switch cabinet secondary circuit schematic diagram and a wiring diagram.
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