CN205920666U - Building supplies distribution teaching technology simulation practical training system - Google Patents

Abstract

The utility model discloses a building power supply and distribution teaching process simulation training system, which comprises a computer monitoring system, a substation simulation experiment training console, a high and low voltage electrical system in a building, and a building low voltage power distribution system; the computer monitoring system is respectively Communicate with the substation simulation experiment training console, the high and low voltage electrical system in the building, and the building's low voltage power distribution system, and the substation simulation experiment training console communicates with the high and low voltage electrical system in the building and the building's low voltage power distribution system ; The utility model can realize a building power supply and distribution teaching process simulation training system that connects the high-voltage electrical system and the low-voltage power distribution system into a whole, which is convenient for students to have an overall understanding of the knowledge they have learned. Stand-by learning operation, improve their hands-on ability.

Description

A simulation training system for building power supply and distribution teaching process

technical field

The utility model relates to the technical field of teaching systems, in particular to a building power supply and distribution teaching process simulation training system.

Background technique

In the power supply and distribution system of buildings, it is a complete technological process from the substation, the high-voltage electrical system of the building to the low-voltage power supply and distribution system inside the building. However, in the teaching and experiment process of power supply and distribution of buildings in many universities, three The latter did not achieve an organic and close combination, so that students could not gain an overall understanding of the building's power supply and distribution system. In addition, in the teaching equipment provided by most manufacturers, the demonstration function is outstanding, but the operability is not strong, and it is impossible to cultivate practical operation skills, which is not conducive to the cultivation of students. In order to solve the current situation, it is urgent to establish a corresponding teaching simulation training system.

Utility model content

In order to solve the shortcomings of the existing technology, the utility model discloses a simulation training system for building power supply and distribution teaching process. The simulation training system is convenient for students to form an overall understanding of the power supply and distribution system of buildings they have learned, and at the same time allows students to realize one-stop cognitive operations and improve their hands-on ability.

In order to achieve the above object, the concrete scheme of the present utility model is as follows:

A building power supply and distribution teaching process simulation training system, including a computer monitoring system, a substation simulation experiment training console, a high and low voltage electrical system in a building, and a low voltage power distribution system in a building;

The computer monitoring system communicates with the substation simulation experiment training console, the high and low voltage electrical system in the building and the building low voltage power distribution system respectively, and the substation simulation experiment training console communicates with the high and low voltage electrical system in the building and the building Low-voltage power distribution system communication;

The substation simulation experiment training console realizes the primary side of the transformer to simulate the high-voltage incoming line, and the secondary side to conduct simulation experiments. separation of positions;

Each indicator light of the circuit breaker in the high and low voltage electrical system of the building and the low voltage power distribution system of the building is connected with the computer monitoring system through a relay, and the computer monitoring system controls the opening and closing state of the circuit breaker and the on and off of the monitoring circuit.

Further, each incoming and outgoing line of the substation simulation experiment training console, the bus coupler, and the high and low voltage sides of the main transformer are equipped with analog current transformers and lead terminals, and the PTs on each side are equipped with analog voltage transformers and equipped with lead terminals. Each fault point realizes phase-to-phase short circuit, three-phase short circuit, and single-phase ground fault simulation;

When operating, first select the corresponding wiring method for the step-down voltage regulator of the substation simulation experiment training console, then connect the console with the microcomputer protection cabinet, and control the closing of the circuit breaker or connect the fault point on the console Simulate various working conditions of the line and complete the corresponding protection experiments.

Further, the substation simulation experiment training console is connected to a microcomputer protection cabinet to simulate various line conditions to complete various protection experiments, and the microcomputer protection cabinet communicates with the power SCADA master station system of the computer monitoring system to complete relevant relay protection functions Experiment and dispatch monitoring function experiment, the power SCADA master station system of the computer monitoring system communicates with the high-voltage electrical system of the building and the high-voltage and low-voltage power distribution system of the building, and the data obtained from the protection experiment carried out on the operating platform controls the high-voltage electrical system of the building. The main wiring diagram of the display board and the typical floor plan in the high and low voltage power distribution system of the building display the switching of the circuit breaker in the board.

Furthermore, one high-voltage incoming line is short-circuited on the substation simulation experiment training operation platform, and only one incoming line works with load. The transformer high-voltage backup protection unit of the cabinet, the transformer low-voltage backup protection unit, and the line main protection unit are connected. The microcomputer protection cabinet uploads the obtained voltage value, current value and power factor parameters to the computer monitoring system when the line fails. The main wiring diagram display board in the high-voltage and low-voltage electrical system of the building and the typical floor plan display board in the low-voltage power distribution system of the building have all the circuit breakers at the third-level loads of the lines automatically cut off, and the first and second-level loads are only powered by the second power supply.

Further, the high and low voltage electrical system of the building includes a main electrical wiring diagram display board, and the low voltage power distribution system of the building includes a low voltage power distribution and a typical floor plan display board;

The main electrical wiring diagram display board and the low-voltage power distribution and typical floor plan display board are used to display the incoming line through the step-down substation, the power distribution cabinet to the lighting distribution box and the power distribution box on the inner floor of the building, and the display board The circuit breaker is indicated by a small indicator light, and the circuit is indicated by a colored light strip. The indicator light is connected to the computer monitoring system through a relay. The computer monitoring system controls the opening and closing status of the circuit breaker and monitors the on-off of the circuit.

Furthermore, the two incoming lines of the high and low voltage electrical system of the building in the display board of the main electrical wiring diagram and the display board of the low voltage power distribution and typical floor plan are respectively connected to the low voltage power distribution system in the building after passing through the step-down transformer. GGD type fixed low-voltage power distribution cabinet and MNS type drawer low-voltage power distribution cabinet, and the low-voltage power distribution cabinet of GGD cabinet type includes reactive power compensation cabinet and active filter cabinet, and the power passes through MNS low-voltage power distribution cabinet and GGD low-voltage power distribution cabinet. After the power distribution cabinet, the lighting and power equipment in the building are supplied with power.

Further, in the part of the main electrical wiring diagram display board and the low-voltage power distribution and typical floor plan display board of the building low-voltage power distribution and typical floor plan, the mains output from the high-voltage and low-voltage electrical system of the building is from the low-voltage distribution room of the substation. The electrical cabinet leads to supply power to the floor lighting distribution box and the fire protection distribution box respectively.

Further, the above system also includes a building electrical installation process simulation display system, which is used to simulate and display the building internal facility installation process of building internal power distribution equipment, lighting equipment and fire fighting equipment.

In the building electrical installation process simulation display system, it is specifically used to simulate and display the laying method of lines in the electrical installation process of intelligent buildings, the installation position of electrical equipment, the installation method of cable trenches, bridges, and pipes;

All kinds of high and low voltage equipment in the substation and distribution room, including incoming line cabinets, outgoing line cabinets, and filter cabinets, to the installation of sockets, the placement of lamps, and the position and height of safety evacuation exit signs are simulated and displayed one by one;

Cable trenches, trays, electric wells, and sockets are all detachable.

It can make students clearly see the internal wiring of cable trenches, bridges, etc., so that students can better understand the installation of specific cable trenches, bridges, electric wells, sockets, etc. The power supply lines in the building are also simulated and displayed with ribbons, which is convenient for students to have a clearer understanding.

The beneficial effects of the utility model:

The utility model can realize a building power supply and distribution teaching process simulation training system that connects the high-voltage electrical system and the low-voltage power distribution system into a whole, which is convenient for students to have an overall understanding of the knowledge they have learned. learn how to operate and improve their hands-on ability.

Description of drawings

The overall structural block diagram of Fig. 1 the utility model;

Fig. 2 The simulation display diagram of building electrical installation process.

detailed description:

Below in conjunction with accompanying drawing, the utility model is described in detail:

As shown in Figure 1, the utility model is composed of a substation simulation experiment training console, a building high and low voltage electrical system and a building low voltage power distribution system, a building electrical installation process simulation display system, and a computer monitoring system. The training console, the high and low voltage electrical system of the building and the low voltage power distribution system of the building, use a microprocessor with high information processing capability to centrally control the above systems through the communication network.

Under the control of the computer monitoring system, the high and low voltage electrical system of the building and the low voltage power distribution system of the building realize the related experiments of the power management and control of the intelligent building power distribution system.

The input of the substation simulation experiment training console is the grid voltage, and the voltage drops to the incoming line voltage in the high-voltage electrical system of the building after the step-down transformer. System and building low-voltage power distribution and incoming line voltage in a typical floor plan.

Substation simulation experiment training consoles mainly include: power monitoring master station system, unattended substation simulation system, intelligent high and low voltage power distribution equipment and dynamic and efficient reactive power compensation experimental system;

The unattended substation simulation system performs data communication with the power monitoring master station system through the standard telecontrol communication protocol, and realizes the simulation experiment of the "four remote" functions of the power system. Various intelligent The high-voltage and low-voltage power distribution equipment is completed in cooperation with the power monitoring master station system, and the dynamic and efficient reactive power compensation experiment system is coordinated with the power monitoring master station system to complete relevant remote monitoring experiments.

The two incoming lines in the high and low voltage electrical system of the building are connected to the GGD type fixed low voltage power distribution cabinet and the MNS type drawer type low voltage power distribution cabinet of the low voltage power distribution system in the building after passing through the step-down transformer, and the GGD cabinet The low-voltage distribution cabinets include reactive power compensation cabinets and active filter cabinets to improve power quality. After the power signals pass through MNS low-voltage distribution cabinets and GGD low-voltage distribution cabinets, they supply power to lighting and power equipment in buildings. , while the MNS type drawer-type low-voltage distribution cabinet and the diesel generator set together form a dual power switching cabinet to supply power for emergency lighting in the building.

What is shown in the low-voltage power distribution system in the building is: the mains output from the high-voltage and low-voltage electrical system of the building passes through the reactive power compensation cabinet, the active filter cabinet and the low-voltage switchgear. The electrical box, power distribution box, etc. supply power, and the lead-out circuit of the lighting distribution box supplies power to the lamps and sockets in the room respectively; the circuit of the power distribution box is led to the fan room to supply power to the fan.

1. Substation simulation experiment training console

In the substation simulation experiment training console, each circuit breaker is equipped with an analog switch, which can perform manual switching and remote switching operations. All incoming and outgoing lines, bus couplers, and high and low voltage sides of the main transformer are equipped with analog current transformers and lead terminals. Analog voltage transformers are set at the PTs on each side and lead terminals are configured. The transformer is modeled using impedance elements. Each fault point can realize phase-to-phase short circuit, three-phase short circuit and single-phase ground fault simulation. The experimental voltage is 100VAC, and the maximum fault current is 20A.

The experimental training console is equipped with one main transformer differential protection, high and low voltage backup protection measurement and control, distribution transformer protection measurement and control, motor protection measurement and control, capacitor protection measurement and control, line protection measurement and control, backup self-injection device and communication management machine, and the measured data It is transmitted to the power SCADA master station system to complete the relevant relay protection function experiment and dispatching monitoring function experiment. All protection measurement and control devices and analog electronic devices are powered by single-phase 220VAC.

As a test platform for simulating high voltage, the substation simulation experiment training console simulates the high-voltage incoming line on the primary side of the transformer, and conducts a series of simulation experiments on the secondary side of the transformer. The substation simulation experiment training console and computer monitoring system and other Some devices work together to complete a series of experimental operations. The power station simulation experiment training console mainly includes three parts:

1.1 Power monitoring master station system

The power monitoring master station system is mainly composed of substation experimental training console, microcomputer (PC), network switch, network master control equipment, serial port server and professional power monitoring software system. The system connection constitutes a complete comprehensive monitoring system for power supply and distribution of buildings.

The system helps students to systematically establish an intuitive understanding of the power automation system in teaching, and at the same time use the system to carry out experiments and practice in various aspects such as power dispatching monitoring and substation SCADA system operation, interface design, database maintenance, remote data communication, etc. Training.

1.2 Experimental system of unattended substation

The substation is an important part of the power supply and distribution system, but the high-voltage equipment is bulky, heavy, and expensive. Considering the laboratory conditions and investment quota, this system adopts physical parameter simulation technology, physical view, real-scene video and other methods to communicate with each other. Combined, the experimental environment of the primary system of the actual substation is constructed, and the special substation relay protection and safety automatic control devices are standardized and configured to form a typical unattended substation simulation experiment system, and the data is communicated with the power monitoring master station through the standard telecontrol communication protocol. Communication, to realize the simulation experiment of the "four remote" functions of the power system.

1.3 Dynamic and efficient reactive power compensation experimental system

In the process of electric energy transmission and use, active power is always accompanied by reactive power. Reactive power control is related to the stability of the power grid and energy efficiency. All power consumers must strictly abide by the reactive power management standards promulgated by the state and the power department. The experimental system provides a special resistance-inductive load simulation system and high-efficiency dynamic compensation equipment to assist teaching, strengthen students' correct understanding of relevant reactive power management regulations, and improve students' understanding of the basic principles and components of advanced reactive power compensation technology and equipment. It can cooperate with the power monitoring master station system to complete relevant remote monitoring experiments, and greatly improve students' actual technical level and scientific research innovation ability in this area.

The substation simulation experiment training operation adopted by the school is carried out on the secondary side of the transformer, including transformer main protection experiment, line protection measurement and control experiment, transformer backup protection experiment, capacitor protection measurement and control experiment, motor protection measurement and control experiment, backup power automatic switching experiment, etc. series of simulation experiments.

2. The system uses mosaic blocks to form a schematic diagram of the main wiring of the high and low voltage electrical system of the building, a low voltage power distribution and a typical floor plan of the building.

(1) The schematic diagram of the main wiring of the building's high and low voltage electrical system mainly identifies the schematic process in which the busbar drawn from the low voltage side of the substation simulation experiment system is stepped down by the step-down substation to supply power to the load users on the low voltage side.

The laboratory leads the bus from the low-voltage side of the substation simulation experiment training console to the high and low voltage electrical system of the building. The bus distribution line of the system is drawn from the two outlet cabinets and connected to the GGD fixed low-voltage distribution line after the step-down transformer. Electric cabinets and MNS-type drawer-type low-voltage power distribution cabinets, and GGD cabinet-type low-voltage power distribution cabinets have reactive power compensation cabinets, active filter cabinets, etc. to improve power quality, and the power passes through MNS low-voltage power distribution cabinets and GGD low-voltage distribution cabinets Behind the electric cabinet, it supplies power to the lighting and power in the building, while the MNS power distribution cabinet and the diesel generator set together form a dual power switching cabinet to supply power to the emergency lighting in the building.

(2) Building low-voltage power distribution and typical floor plan mainly identifies the low-voltage power supply and distribution system inside the building. Using a microcomputer processor with high information processing capabilities to measure, monitor and comprehensively monitor the air conditioning, lighting, fire protection, and other equipment of the entire building through the communication network to achieve optimal management, thereby improving the safety and reliability of system operation , save manpower, material resources and energy, reduce equipment operating costs, and keep abreast of equipment status, running time, energy consumption and changes, etc. The mains electricity output by the high and low voltage electrical system of the building is drawn from the low voltage distribution cabinet in the substation room to supply power to the floor lighting distribution box and fire protection distribution box respectively. Circuits include lighting, sockets, air conditioners, backup circuits, etc. The electrical layout drawings of the entire floor are accompanied by detailed text descriptions, which facilitates the students to learn about the power supply and distribution of buildings.

The high-voltage cabinets involved, such as: active filter cabinets, reactive power compensation cabinets, incoming line cabinets, load cabinets, etc., are arranged in kind for students to carry out related experimental operations. GGD fixed low-voltage switchgear and MNS drawer-type low-voltage switchgear are widely used in the current power transformation and distribution system. The laboratory provides standard intelligent high-voltage and low-voltage switchgear for auxiliary teaching to improve physical awareness. Knowledge, process specification understanding, use and maintenance training teaching effect, all kinds of intelligent high and low voltage switchgear can cooperate with substation simulation experiment training console, computer monitoring system to complete functional experiments such as telemetry, remote signaling, and remote control.

(3) In the schematic diagram of the main wiring of the building's high and low voltage electrical system, all circuit breakers are represented by rectangular indicator lights, which can simulate the computer remote control circuit breaker opening and closing process. In addition, different working conditions of power supply and distribution can be simulated by controlling the on and off of the rectangular indicator light of the circuit breaker.

3. Building electrical installation process simulation display system

As shown in Figure 2, the building electrical installation process simulation display system mainly simulates and displays the installation process of power distribution equipment, lighting equipment, fire protection equipment, substations, electrical rooms, pipes and wiring inside the building. The building electrical installation process simulation system makes a specific display of the power distribution circuit and electrical equipment in each building in the low-voltage power distribution system of the building. It mainly describes that the lines from the high-voltage substation enter the substation in the building through the cable trench, and then pass through the reactive power compensation cabinet, active filter cabinet, low-voltage switch cabinet and other low-voltage power distribution cabinets. The room is led to the power distribution room to the lighting distribution box, the power distribution box, etc., and the lighting distribution box leads to the room lamps and sockets respectively. The circuit of the power distribution box is led to the fan room to supply power to the fan. The lead wires from the distribution box are laid through the bridge to the room. In this installation process simulation display diagram, the laying method, wiring method, equipment installation, cable trench, bridge, and pipe installation method of intelligent building electrical equipment are all simulated and displayed. The installation of various equipment and sockets in the substation and distribution room, the placement of lamps, and the position and height of safety evacuation exit signs have all been simulated and displayed one by one. A specific simulation display was made to let the students better understand the installation of specific cable trenches, bridges, electric wells, sockets, etc., so that the students can form a clearer understanding and lay a good foundation for the students to engage in construction and design in the future. Base.

In the building electrical installation process simulation display system, you can see the cross-section of the complete line routing. The specific installation process of the line from the electrical room through the bridge, the electric well to the socket, and the lamps and lanterns allows students to have a deeper understanding.

4. Intelligent building power distribution system

Considering safety, practicality, energy saving, etc., the power supply and distribution of building power, emergency, lighting, sockets, fire protection and other facilities must follow strict standards and specifications. The way is to fully display the relevant norms and standards of the intelligent building power distribution system, and cooperate with the substation simulation experiment training console and the computer monitoring system to complete the relevant experiments on the power management and control of the intelligent building power distribution system.

For example, students can simulate a high-voltage power failure on the substation simulation experiment training console, turn off the circuit breaker of one incoming line, close the bus tie switch, and once the power is cut off, only the second power supply is used for power supply. The circuit breaker at the load is automatically cut off, and the first and second loads are only powered by the second power source. At the same time, the circuit breakers at all the third-level loads of the building in the panel of the high and low voltage electrical system of the building and the low voltage power distribution system of the building are also closed, and the linkage control is realized in the two modules.

The cultivation of applied talents is one of the major tasks faced by ordinary higher education, and experimental teaching plays an important role in the cultivation of talents. "Building power supply and distribution" is an important professional course and characteristic course of electrical information major in construction colleges and universities. The advanced engineering technology application talents of the research are the main training goals, building electrical and intelligentization is the main direction, and the characteristic laboratory, experimental teaching system and teaching material construction are the breakthrough points. The laboratory currently built by this application is the subject of the course. The four stages of teaching, experimental teaching, curriculum design, graduation design and scientific and technological activities, provide guarantees to meet the needs of diversified talent training models.

Although the specific implementation of the utility model has been described above in conjunction with the accompanying drawings, it does not limit the protection scope of the utility model. Those skilled in the art should understand that on the basis of the technical solution of the utility model, those skilled in the art do not need to Various modifications or deformations that can be made with creative efforts are still within the protection scope of the present utility model.

Claims (7)

1. a kind of building, for distribution teaching processing simulation experience system, is characterized in that, including computer supervisory control system, transformer station's mould High-low pressure electrical system and building low-voltage distribution system in draft experiment training operation bench, building；

Described computer supervisory control system respectively with high-low pressure electrical system in transformer station simulation experiment training operation bench, building and Building low-voltage distribution system communicates, in described transformer station simulation experiment training operation bench and building high-low pressure electrical system and Building low-voltage distribution system communicates；

In described building high-low pressure electrical system and building low-voltage distribution system, each chopper display lamp is all by relay Device is connected with computer supervisory control system, and computer supervisory control system controls the division state of chopper and the break-make of monitoring circuit.

2. a kind of building as claimed in claim 1, for distribution teaching processing simulation experience system, is characterized in that, described transformer station The each line of simulation experiment training operation bench and mother, main transformer high and low pressure side all configure analog current transformer and arrange lead End, be respectively provided with analog voltage transformer at each side pt and configure lead end, each trouble point all realize phase fault, three-phase shortcircuit, Singlephase earth fault is simulated.

3. a kind of building as claimed in claim 1, for distribution teaching processing simulation experience system, is characterized in that, described transformer station Simulation experiment training operation bench connected with computer protects the system of electric power scada main website of cabinet, Microcomputer Protection cabinet and computer supervisory control system System communication, the electric power scada main station system of computer supervisory control system again with building high-voltage electric system and building high-low pressure Distribution system communicates, and controls the main electrical scheme in building high-voltage electric system in the Protection the data obtained that operating board is carried out The break-make of chopper in Typical Planar layout drawing Graphic Panel in figure Graphic Panel and building high and low voltage electric distribution system.

4. a kind of building as claimed in claim 1, for distribution teaching processing simulation experience system, is characterized in that, described building High-low pressure electrical system includes electric main wiring diagram Graphic Panel, and building low-voltage distribution system includes low-voltage distribution and Typical Planar Layout drawing Graphic Panel；

Electric main wiring diagram Graphic Panel and low-voltage distribution and Typical Planar layout drawing Graphic Panel are used for showing inlet wire through blood pressure lowering power transformation Institute, the light distribution box of power distribution cabinet to interior of building floor and power distribution panel, in Graphic Panel, chopper adopts bezel Represent, circuit represents using colored light bar, display lamp is connected with computer supervisory control system by relay, computer supervisory control system Control the division state of chopper and the break-make of monitoring circuit.

5. a kind of building as claimed in claim 4, for distribution teaching processing simulation experience system, is characterized in that, electrical main connecting wire The two-way of the building high-low pressure electrical system part in figure Graphic Panel and low-voltage distribution and Typical Planar layout drawing Graphic Panel enters The fixed low-voltage distribution cabinet of ggd type and the mns type connecing low-voltage distribution system in building after step-down transformer respectively drawn by line Drawer type low-voltage distributing cabinet, and the low-voltage distribution cabinet of wherein ggd cabinet type includes reactive compensation cabinet and active power filtering cabinet, electric power warp Power to after mns low-voltage distribution cabinet and ggd low-voltage distribution cabinet the illumination in building and power-equipment.

6. a kind of building as claimed in claim 4, for distribution teaching processing simulation experience system, is characterized in that, electrical main connecting wire Building low-voltage distribution in figure Graphic Panel and low-voltage distribution and Typical Planar layout drawing Graphic Panel and Typical Planar layout drawing portion Point, building high-low pressure electrical system output civil power from transformer room's low-voltage distribution cabinet draw respectively give floor light distribution box, Fire-fighting distribution box is powered.

7. a kind of building as claimed in claim 1, for distribution teaching processing simulation experience system, is characterized in that, above-mentioned one kind is built Build and also include building electric mounting process simulation shows system, described building electricity for distribution teaching processing simulation experience system Gas mounting process simulation shows system is used for the building of simulation shows interior of building controller switching equipment, luminaire and fire-fighting equipment Thing inner facility mounting process.