Factory Power Supply and Distribution Comprehensive Training System | Power Supply and Distribution Technology Training Device

“TYGPD-02AFactory Power Supply and Distribution Comprehensive Training System | Power Supply and Distribution Technology Training Device”It is developed and produced by Shanghai Shangyi based on the "Advanced Electrical Technology", "Fundamentals of Electrician (Suitable for Advanced Workers)", and "Training Textbook for Electricians" compiled by the Vocational Skills Appraisal and Guidance Center for Machinery Industry, combined with the courses of "Factory Power Supply" and "Power Supply and Distribution Technology". The main focus of this training is on the design and development of key teaching content related to electrical primary, secondary, control, and protection in the power supply and distribution lines of 35kV general step-down substations, 10kV high-voltage substations, and workshop loads, including microcomputer automation devices, reactive power automatic compensation devices, intelligent acquisition modules, and industrial human-machine interfaces. Through skill training in this training device, students can not only gain a deep understanding of professional knowledge but also develop practical skills. And this training device is also beneficial for students to understand and master the working characteristics and wiring principles of transformers, motor units, current transformers, voltage transformers, analog meters, digital stopwatches, and switch components.It can meet the operational experiments of teaching content such as automatic devices, substation monitoring, relay protection, etc. in power system transformation and distribution. This device is suitable for experimental teaching of courses related to power and electrical engineering, and can also serve as a hardware development platform for student graduation projects and teacher research projects, as well as a training platform for professional and technical personnel.

oneTechnical features

1.Highly practical

This device is designed based on typical teaching content and has sought advice from professional teachers and absorbed practical experience from engineering applications during development. The practical skills training requirements for power transmission, transmission, distribution, control, and protection of the factory's power supply and distribution system have been systematically implemented. Students can also master the correct circuit switching operation, switching operation, operation control, and adjustment operation procedures for various operation modes during practical training. This device has a clear structure, flexible operation, easy operation, and is safe and reliable. We have established a good practical training platform for students to improve their practical skills.

2.Strong comprehensiveness

This device integrates functions such as microcomputer protection, backup automatic switching, and reactive power compensation related to factory power supply. It uses industrial field products, line models, transformer models, motor models, and capacitor models, all of which can simulate the typical on-site conditions of the factory, facilitating theoretical and numerical analysis.

3.*Sex

This device integrates the relevant technologies of microcomputer automation device, intelligent acquisition module, PLC and other microcomputer intelligent detection and control. It adopts a hierarchical distributed control mode to form a comprehensive automation training platform that integrates control, protection, measurement and signal. This reflects the profound transformation direction of current automation technology and communication technology in the power supply and distribution grid.

twoTechnical performance and characteristics

2.1. Working power supply: three-phase five wire AC380V+10%, 50Hz

2.2 Whole machine capacity: ＜ 10kVA

2.3 System Structure: Screen structure, consisting of four main parts: primary system part, relay protection training component, computer monitoring part, and secondary system open part, as shown in Figure 24

2.4 Main electrical wiring: 35kV and 10kV voltage levels; 35kV single bus section; 10kV single bus section, two main transformers

2.5 System Screen Structure and Appearance Design: The system screen panel adopts aluminum panel spray coating and concave rotten board process. The primary system diagram of the panel is filled with colors according to the national standard color code for different voltage levels. The frame structure requires the use of XL type complete cabinet structure commonly used in power supply and distribution systems

2.6 Intelligent reactive power controller: capable of automatically tracking the power factor of the power grid and controlling the switching of capacitor banks, with manual and automatic switching functions

It can automatically track the power factor of the power grid and control the switching of capacitor banks, with manual and automatic switching functions. According to the reactive power of the transformer, phase compensation is carried out, and the capacitor group works in a cyclic manner to ensure that each group of capacitors is evenly operated, thereby reducing energy loss and voltage loss and improving the efficiency of equipment use.

The JKL5CF intelligent reactive power controller adopts microcontroller control technology, and the sampled physical quantity is reactive current. The AC sampling is resistant to high-order harmonic interference. The basic parameters are as follows:

Rated current:AC0-5A； Current input impedance: ≤0.2Ω；

Rated voltage:AC220v;Frequency:50Hz；

Protection level of shell:IP40；

Power consumption: ≤8W

Electric shock capacity:AC220V/7A

Sensitivity:50mA

2.7 Both 35kV and 10kV require the installation of three-phase intelligent power monitoring devices: three-phase I, U, kW, kVar, kVA, kWh, kVarh, cos Φ, Hz measurement; Four quadrant energy metering and time-sharing energy statistics; RS485、MODBUS-RTU； High brightness LED/LCD, full Chinese menu

2.8 Relay Protection Training Module

(1) Training module design: All relays must use protruding rear wiring to facilitate students' observation of relay structure and setting of relay parameters. The installation board is made of high-strength steel plate

(2) Relay protection components

N current relay component

Including 1 DL-24C/2A electromagnetic current relay and 1 DL-24C/6A electromagnetic current relay

Intermediate relay component

Including 1 DZB-12B intermediate relay and 1 DZS-12B intermediate relay

Time and signal relay components

Including 1 DS-23 time relay and 1 JX-21A/T signal relay

N reclosing device components

Including 1 DH-3 type reclosing relay

Insulation monitoring experimental component

Including 1 DY-28C/160V electromagnetic voltage relay, 1 analog voltage meter head, and 1 voltage switch

2.9 Open Part of the Secondary System

(1) The training system must open all controller wiring terminals, transformer secondary terminals, and circuit breaker control circuits for students to practice wiring.

(2) This section should include open areas for PT, CT, automatic devices, instruments, signal indicators, secondary control, transfer switches, and microcomputer backup automatic switching wiring terminals

(3) AC ammeter

Working power supply:AC/DC85-250V

PIC microcontroller chip, integrated design

Range:AC5AThe1AThe100mAThe75mV

Measurement accuracy:0.3%F.S±3a character

Display font:0.8”extra largeLEDred font

L Overall dimensions:96*48*80MM

Hole size:92*44MM

Working environment: temperature0-50Temperature and humidity0-80%RH

(4) AC voltmeter

Working power supply:AC/DC85-250V

PIC microcontroller chip, integrated design

Range:AC500VThe100V、10The1V

Measurement accuracy:0.3%F.S±3a character

Display font:0.8”extra largeLEDred font

L Overall dimensions:96*48*80MM

Hole size:92*44MM

Working environment: temperature0-50Temperature and humidity0-80%RH

(5) DC ammeter

Working power supply:AC/DC85-250V

PIC microcontroller chip, integrated design

Range:DC5AThe1AThe100mAThe75mV

Measurement accuracy:0.2%F.S±2a character

Display font:0.8”extra largeLEDred font

L Overall dimensions:96*48*80MM

Hole size:92*44MM

Working environment: temperature0-50Temperature and humidity0-80%RH

(6) DC voltmeter

Working power supply:AC/DC85-250V

PIC microcontroller chip, integrated design

Range:DC500VThe100V、10The1V

Measurement accuracy:0.2%F.S±2a character

Display font:0.8”extra largeLEDred font

L Overall dimensions:96*48*80MM

Hole size:92*44MM

Working environment: temperature0-50Temperature and humidity0-80%RH

(7) 1 digital stopwatch

Measurement range: 0.001-99.999S, functions: single channel, dual channel; Adaptive signal: The null contact can be closed or opened, and the null contact can carry a potential of ≤ 220V; Zeroing method: manual zeroing

(8) Microcomputer backup automatic switching device: an industrial grade protection device with optional methods such as incoming line backup switching and bus tie backup switching. When the main incoming power supply simulates a fault and loses power, the backup automatic switching device can automatically switch the backup incoming power supply to the working bus, ensuring that the load connected to the working bus can still work normally and improving the reliability and stability of power supply. At the same time, it has an adaptive function. When the main incoming power supply is detected to be restored, the backup incoming circuit breaker will be automatically disconnected, and the main incoming line will be closed with a delay, achieving automatic switching after the main incoming line voltage is restored and put into operation.

2.10 Computer Monitoring Section

(1) Controller: Siemens PLC Host and Control Module: CPU226+EM223 (16I/O)+EM221

(2) Monitoring host

Brand N:MCGS. Model:TCP1062k. Size:10.2Inches. LCD screen:TFTlcd. Display color: True color65535Color; Resolution:800*480Touch screen: resistive. Power supply:DC24VRated power:14W.CPUa main board:ARM 400MHz. Memory:64MStorage device:128MflashPanel size:315*239mmSerial port:1*RS232,1*RS485.USBinterface2One.RJ45Ethernet port.

(3) Main function: Configure the primary power supply and distribution system and display real-time changes in the main wiring; Real time collection, display, and various power parameters; Real time and historical curves and reports can be generated for various collected electricity quantities; Monitor the position status of each circuit breaker; Capable of controlling the tripping/closing of transmission line circuit breakers and monitoring the screen.

2.11 Training Wires and Sockets

Adopting a highly reliable protective sheath structure for hand grabbing connection wires and sockets, with a fully enclosed structure, it is safe, reliable, and anti electric shock for use. The core of the wire is made of oxygen free copper drawn into a multi strand wire that is as thin as a hair, achieving the purpose of ultra softness. It is wrapped with a nitrile polyvinyl chloride insulation layer, which has the advantages of softness, high voltage resistance, high strength, anti hardening, and good toughness. The plug is made of solid copper material with a beryllium light copper spring plate, providing excellent contact. Strong electrical connection wires and sockets.

2.12 Primary and secondary components of analog power supply and distribution system

Install switch components, operating devices, position indicators, and various instruments on the system panel; The screen is equipped with a complete simulation of primary components (isolating switches, circuit breakers), transformers, current transformers, voltage transformers, line impedances, short-circuit impedances, loads, etc. designed according to the network primary system diagram

2.13 Intelligent Switching Operation Assessment System

A system serves as an experimental platform for power outage and switching operations of lines, busbars, and transformers, as well as for various accident states; The assessment system can analyze accidents (faults) before and after switching, and provide sound and light alarms and error records for students' misoperation, providing a basis for teacher assessment

2.14 Load

The training system is equipped with 3 * 500W high-power adjustable resistors as active loads and 1.5kW three-phase asynchronous motors as reactive loads

threeTraining projects

1. Characteristic experiment of commonly used relays for power supply and distribution

(1) Characteristics of current relay

(2) Characteristics of voltage relay

(3) Characteristics of time relay

(4) Characteristics of intermediate relay

(5) Characteristics of signal relay

2. Relay protection experiment for power supply and distribution system

(6) Control and signal circuit experiment of circuit breaker

(7) Circuit experiment of insulation monitoring device for 6-35kV system

(8) Experiment on Line Current Quick Break Protection

(9) Time limited overcurrent protection experiment for power lines

3. Switching operation of power supply and distribution system

(10) Experiment on Power Transmission and Outage Operations in Power Distribution Stations

(11) Switching operation from one incoming power supply to two incoming power supplies

(12) Switching operation of segmented single mother operation status

(13) Bus switching from operating state to maintenance and switching operation

(14) Switching operation of busbar from maintenance state to operation

(15) Transformer switching from operating state to maintenance and switching operation

(16) Transformer switching operation from maintenance status to operation

(17) Transformer switches from operating state to cold standby switching operation

(18) Transformer switches from operating state to hot standby switching operation

(19) Switching operation of transformer from cold standby state to operation

(20) Switching operation of transformer from hot standby state to operation

4. Automatic Device Training

(21) Primary reclosing of power supply and distribution system

(22) Microcomputer backup self switching experiment

(23) Manual power factor compensation

(24) Automatic power factor compensation

5. Application of PLC in Power Supply and Distribution Relay Protection

(25) Overcurrent protection with time limit on the line

(26) Overcurrent caused by low voltage starting of the circuit

(27) Line current quick break protection

(28) Transformer overcurrent

(29) Transformer overload

(30) Integrated overcurrent protection and automatic reclosing for power lines

(31) Integrated protection of overcurrent and acceleration after automatic reclosing of power lines

(32) Automatic activation of backup power supply

6. Cognition of Factory Power Supply Electrical Wiring Diagram

(33) Cognition of the simulation diagram of the electrical main wiring of the training platform.

(34) Correct operation of touch screen.

(35) Understanding of the main electrical wiring diagram.

(36) Use of electric stopwatch

(37) Use of smart meters

4Main configuration list