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Electrical training

ZOPDL-WJB Electric Power System Microcarmark Protection Experimental Device

Power system microcomputer line protection experimental desk, microcomputer protection line training device can be familiar with and master the principles of conventional electromagnetic relay protection and microcomputer protection in the power system, and protect the wiring and setting test methods. The installation design is compact and integrated.

This device is a microcomputer line protection experimental device developed according to the teaching requirements of " Power System Relay Protection", "Power Engineering", "Power Automation", "Power System Microcomputer Protection" and other courses, and combined with practical application and development in production. Through this experiment, students can become familiar with and master the principles of conventional electromagnetic relay protection and microcomputer protection in power systems, as well as protection wiring and setting test methods. The device has a compact design, strong integrity, and complete protection device functions. It integrates multiple functions of protection, measurement, control, monitoring, and communication. This device can not only be used as a teaching experiment platform for professional line protection in power, electrical , and automation categories, but also It can be used as a hardware and software platform for students to familiarize themselves with and master power communication protocols and various programming software. This device is also equipped with RS-485/Modbus-RTU communication interface and host computer monitoring software.

1. Safety protection system of the device

The three-phase four-wire power supply is input and then output in an isolated manner (floating design). The m*n power supply is controlled by a three-phase key switch, and a three-phase illuminated fuse is provided as a phase f*lure indication and protection.

The power supply of the control panel is controlled by the contactor through the start and stop buttons.

The screen is equipped with a voltage-type leakage protection device and a set of current-type leakage protection devices. If leakage occurs inside, outside or in the strong current output of the control screen, an alarm will be issued and the m*n power supply will be cut off to ensure the safety of the experiment.

The primary and secondary sides of the three-phase voltage regulator are equipped with over-current protection technology, which can automatically protect ag*nst over-current or direct short circuit between phases and lines.

It is equipped with a timer and alarm recorder (service manager) to record the number of illegal uses and provide a unified standard for the assessment of students' experimental skills.

2. Experimental projects

System experiment

Experiment on normal, maximum and minimum operating modes of the simulated system

Simulation system short circuit experiment

Static test of protective device

Basic function test of microcomputer protection device

Microcomputer fixed time overcurrent protection

Microcomputer timeless current quick-break protection

Microcomputer with time-limited current quick-break protection

Staged current protection

The influence of operating mode on protection sensitivity and sensitivity verification

Current and voltage ch*n protection

Inverse time limit protection experiment

Staged overcurrent protection and acceleration before automatic reclosing

Staged overcurrent protection and automatic reclosing acceleration

Research on other forms of line protection

Power direction overcurrent protection experiment

Zero sequence current protection experiment

Overload protection experiment

Low voltage load shedding experiment

Electromagnetic relay characteristics and protection

Electromagnetic current relay and voltage relay experiment

Electromagnetic time relay experiment

Electromagnetic intermediate relay experiment

JX-21A/T signal relay experiment

6～10KV line overcurrent protection experiment

Current quick-break protection

Two-stage overcurrent protection

Current blocking voltage quick-break protection

Generator overvoltage protection

Design experiment

——Self-designed according to the experimental topic, self-drawn steps, self-wired, and completed the experiment

Current and voltage interlocking quick-break protection and over-current protection experiments

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

Inverse time current protection and overcurrent protection experiments

Inverse time limit, overcurrent comprehensive protection and automatic reclosing experiment

Current and voltage ch*n protection and acceleration experiment before automatic reclosing

Acceleration experiment after current and voltage interlocking protection and automatic reclosing

Inverse time overcurrent and acceleration protection before automatic reclosing

Inverse time overcurrent and acceleration protection after automatic reclosing

SCADA experiment

Telemetry, remote control, remote signaling experiments

3. Configuration list

serial number	name	Specifications and models	unit	quantity	Remark
1.	Practical tr*ning screen	ZRDL-WJB	set	1
2.	Tr*ning table	1600750750	set	1
3.	luxury computer desk	6006001200	set	1
4.	Microcomputer line protection device	RE-800	tower	2
5.	Current relay	DL-24C	Only	1
6.	voltage relay	DY-28C	Only	1
7.	Time Relay	DS-27	Only	2
8.	Intermediate relay	DZ-32B	Only	2
9.	Signal relay	X-21A/T	Only	2
10.	Experimental wire	Safe	strip	several
11.	Load Resistance	25W 3 ohm	Only	6
12.	AC contactor	CJX09-10 220V	Only	10
13.	Intermediate relay	DC24V	Only	20
14.	Current Transformer	custom made	Only	several
15.	voltage transformer	custom made	Only	several
16.	software	middle man	set	1

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