DYDL-WB Electric Power System Microcarmark Comprehensive Experimental Device

At present, the vast majority of relay protection in power systems adopts microcomputer-based protection devices. As a modern protection device, it occupies a very important position in the secondary part of the power system. Therefore, it is very important for power system students and on-the-job professional technicians to master the wiring, parameter setting and debugging of microcomputer devices.

"Power System Microcomputer Protection Comprehensive Tr*ning Device" is a comprehensive tr*ning device designed for the power technology majors "Power System Relay Protection", "Power System Microcomputer Protection" and related professional courses in vocational colleges. This tr*ning device adopts microcomputer line measurement and control devices and microcomputer transformer measurement and control devices that are widely used in power engineering, and is equipped with functions such as simulated primary systems (including transmission lines, power transformers, load impedances, short-circuit impedances), and three-phase adjustable power voltage regulators. The module can complete practical tr*ning and assessment projects in the characteristics testing and wiring of microcomputer circuits and microcomputer transformer protection devices, as well as parameter setting, setting, and operation of line protection and transformer protection. This device can be used for tr*ning in the electric power industry, and can also be used for practical tr*ning and teaching in vocational schools and other related majors.

2. Characteristics

1. The core equipment of the practical tr*ning device - microcomputer line measurement and control device, microcomputer transformer measurement and control device, and a physical simulation primary system, so that students can intuitively understand the changes in power parameters when various short-circuit faults occur in the power system.

2. The tr*ning device has an upgrade interface, and users can expand relay protection and secondary circuit tr*ning projects based on the simulated primary system.

3. Communication networking: The tr*ning device has an RS-485 bus interface, which can realize power system SCADA based on microcomputer measurement and control devices.

3. Technical indicators

1. Rated voltage: three-phase five-wire ~ 380V ±10% 50Hz

2. Working environment: ambient temperature range is -5℃～+40℃, relative humidity <85% (25℃), altitude <4000m

3. Rated capacity: 3.0kVA

4. Overall dimensions: 1240mm×500mm×2000mm

4. Practical tr*ning projects

Microcomputer line protection tr*ning

1. Simulate the normal, maximum and minimum operating modes of the power system

2. Analog system short circuit

3. Microcomputer definite time overcurrent protection

4. Microcomputer with time-limited current quick-break protection

5. Microcomputer timeless current quick-break protection

6. Staged overcurrent protection

7. The influence of operating mode on protection sensitivity and sensitivity verification

8. Current and voltage ch*n protection

9. Inverse time current protection

10. Staged overcurrent protection and acceleration before automatic reclosing

11. Staged overcurrent protection and acceleration after automatic reclosing

12. Other forms of line protection

Microcomputer transformer protection tr*ning

13. Normal operation of the system and measurement of unbalanced current

14. Simulate transformer gas protection

15. Transformer differential protection

16. Transformer overcurrent protection

17. Transformer inverse time overcurrent

18. Transformer overload protection

19. Transformer zero sequence overcurrent protection

Loop troubleshooting

20. Microcomputer line troubleshooting

21. Microcomputer transformer troubleshooting

Hot-selling product: Electrician tr*ning bench