Petra Píclová Online training 7.6.2012

1. Protections from the technical point of view “What you always wanted to know about protections and were afraid to ask…” Petra PíclováOnline training 7.6.2012

2. Agenda • What is mains protection? • Protection functions • Different applications • Configuration and settings • Communication • New trends and R&D

3. = ≈ What is mains protection?

4. How mains protections work • 500 kW power plant; 0,25 EUR per kWh → EUR 3000 per day • Property damage EUR 1 500 000 = 140% of yearly revenue

5. Role of mains protection 1. To protect the utility grid (mains) and its consumers 2. To protect the equipment of the site owner 3. To protect the investment of the site operator

6. ComAp mains protections • MainsPro • Essential functions • Approved by utilities • InteliPro • Advanced functions • Flexible configuration

7. Protective functions

8. MainsPro -ingeniously simple • Essential protective functions: • 2-level over/undervoltage • 2-level over/underfrequency • Vector shift • Rate Of Change Of Frequency • Symmetrical components • Last trip record • Mechanical sealing

9. InteliPro - simply ingenious • Wider range of protective functions • Additional features • Comprehensive history log • Full configurability through PC SW • Plug-in communications concept • CAN connection to controllers

10. Basic protective functions

11. Optional protective functions

12. Voltage • Adjustable time delays for both levels, U/O voltage • 10 minutes floating average overvoltage • Voltage unbalance (ANSI 47) • Detection of increased difference of voltage amplitude between two phases • Voltage asymmetry • Detects angle asymmetry of the measured voltage

13. „Inverse definite minimum time“ overcurrent Moderate, very or extremely inverse ANSI IEC ComAp curve IDMT overcurrent

14. Directional power • Adjustable direction and limit + kW (import) - kW (export) 0 kW

15. Directional overcurrent

16. Loss of mains protections Vector shift (ANSI 78) Rate of Change of Frequency – ROCOF (ANSI 81R)

17. Mains protections applications

18. Usual applications • CHP • Micro-turbines • Biogas stations • Renewables • PV power plants • Small hydro • Grid-tied wind • Biomass plants

19. Simple application 1 CB operated Complex application 2 CBs operated Different operation

20. Simple applications • Comm Trp output used • CB1 Feedback • Remote switching • Blocking of functions by • Setpoints • Binary inputs

21. Complex applications • CB1 and CB2 operated independently • „Priority switching“ function • CBs can be used as backup to • each other • Blocking of functions

22. Mains protection added value

23. Configuration and settings

24. MainsPro • Easy wiring • Manual settings and operation • No PC SW needed • 5 relay outputs • 4 binary switches • Remote or manual fault reset • Automatic return to mains

25. InteliPro • Full configurability through LiteEdit PC software

26. Lite Edit

27. Communication

28. InteliPro • Plug-in modules support • IB-Lite (Ethernet) • IL-NT GPRS • IL-NT RS232 (Modbus) • IL-NT RS485 (Modbus) • IL-NT USB • Active SMS • messages at pre-set event • History log • 330 event-driven records

29. New trends and Research &Development

30. New trends • Widespread power generation • Grid stability maintenance • Increased requirements

31. Research &Development New features added to MainsPro • Average voltage • Automatic return to mains • 5 last events record (not released yet) New features added to InteliPro • Dynamic grid support • Pole slip protection (not released yet) • QU (reactive power undervoltage) protection (not released yet)

32. Available materials • Datasheets • Manuals – comprehensive guides • Default set up sheet in every box • Protection catalogue • Technical support

33. Buy Additional Features • You pay only for what you need • Provides possibility of adding further functions • Access through ComAp VIP page

34. Questions?

35. Thank you!