Common relay characteristics of power distribution system
1. Typical current relay characteristics
2. Typical voltage relay characteristics
3. Typical intermediate relay characteristics
4. Signal relay characteristics
5. Differential relay characteristics
Relay protection of power distribution system
6. Over-current protection of power distribution circuit with time lag
7. Low-voltage start over-current protection of power distribution circuit
8. Current quick-break protection of power distribution circuit
9. Current reverse time-lag over-current protection of power distribution circuit
10. Over-current protection of power distribution transformer
11. Current quick-break protection of power distribution transformer
12. Over-load protection of power distribution transformer
13. Longitudinal differential protection of power distribution transformer
Secondary loop and automation device of power distribution system
14. Control and signal loop of breaker
15. Insulated monitoring device circuit of 6~35KV system
16. Primary reclosing of power distribution system
17. Integration of circuit over-current protection and automatic reclosing
18. Integration of over current protection and automatic relcosing back acceleration
19. Dual power back-up APD circuit
20. Dual power lead-in back-up APD circuit
21. Voltage control of electric power transformer on load
22. Manual/automatic power factor compensation
Microprocessor monitoring of power distribution system
23. System power monitoring and load curve measurement
24. Remote control and signal acquisition of breaker
25. Substation voltage reactive comprehensive automatic control
Application of PLC in power distribution protection control
26. Over-current protection of circuits with time lag
27. Low-voltage start over-current protection of circuits
28. Current quick-break protection of circuits
29. Over-current protection of transformer
30. Over-load protection of transformer
31. Circuit over-current protection and automatic reclosing
32. Circuit over-current protection and automatic reclosing back acceleration
33. Backup power supply automatic connection
Simulation of power supply and cutoff of power distribution station
Telemeasurement, telecontrol and telesignal
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