DYDL-WJ Electric Power System Microcarmark Protection Experimental Platform

This device adopts a microcomputer line protection device widely used in modern power engineering, and is equipped with power supply, two-section transmission lines, mutual inductors, intelligent fault setting assessment and other modules. This device m*nly completes practical tr*ning in protection device characteristic testing, wiring, setting, operation, etc. It can be used for tr*ning in the electric power industry, and can also be used for the assessment of practical tr*ning of students in related majors in colleges and universities and technical technical schools.

Intelligent fault setting and large-screen LCD clicker:

operating unit

Operating unit circuit board (integrated with display screen), keyboard.

The operating unit adopts a multiple protection design; dual power supply DC 12V input; 128X64LCD display; 8 switching alarm inputs, up to 48 relay control; the operating unit can be offline for assessment without being connected to the Internet; it can automatically score; and the display prompts when there is an alarm.

It m*nly has the following operating functions:

Student Portal: Used by students when troubleshooting to check the rem*ning assessment time.

Teacher entrance: set faults, resolve all faults, set assessment time, change login password, and set device number. The teacher entrance requires a login password.

Score query: Query the current score of students.

Student ID query: Query the student ID set by the teacher through the computer.

Device number query: Query the local device address. Each operating unit has a unique device address.

Assessment time starts: used for the assessment to start counting down after the teacher has set the assessment time.

2. Practical tr*ning and assessment items

1. Basic practical tr*ning items

(1) Simulate the normal, maximum and minimum operating modes of the system

(2) Analog system short circuit

(3) Basic function test of microcomputer protection device

(4) Microcomputer time-limited current quick-break protection

(5) Microcomputer fixed time overcurrent protection

(6) Microcomputer with time-limited current quick-break protection

(7) Staged current protection

(8) The influence of operating mode on protection sensitivity and sensitivity verification

(9) Current and voltage ch*n protection

(10) Staged overcurrent protection and acceleration after automatic reclosing

(11) Other forms of line protection

² Zero sequence current protection

² Overload protection

² Low voltage load shedding

(12) Secondary circuit wiring

(13) Secondary circuit debugging

(14) Protection calculation and setting

(15) Protective action test

2. Assessment items--design yourself according to the questions, draw up the steps yourself, and complete the assessment.

(1) Overcurrent protection

(2) Current and voltage ch*n quick-break protection

(3) Current and voltage ch*n quick-break, over-current comprehensive protection and automatic reclosing

(4) Overcurrent comprehensive protection and automatic reclosing

(5) Current and voltage ch*n protection and acceleration before automatic reclosing

(6) Secondary circuit troubleshooting

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