Evolution and Prospects of Relay Protection and Automation Systems Evolution and Prospects of Relay Protection and Automation Systems Moderator: Janez V. Zakonjšek

2 SC B5 Colloquium, Madrid 2007 Preferential Subject 2 – “Acceptable Functional Integration in Substation P&C for Transmission Systems” Question PS2-11 Is any user already planning to employ the “two boxes per bay” solution in transmission, or the “two boxes per substation” system? Are there equipment available in the market? When can these solutions be adopted? Which are the advantages and disadvantages or obstacles? How can these obstacles be overcome?

3 1 - Distance protection 2 - Three-phase power swing unit 3 - Directional earth fault protection 4 - AC supervision circuits 5 - DC supervision circuits 6 - STUB protection 7 - Auxiliary relays 8 - Fault locator 9 - (Printer for fault locator) 10 - Disturbance recorder 11 - Signaling unit 12 - Parts of event recorder 13 - Breaker failure protection - 1 CB 14 - Tripping relays 15 - Autoreclosing for one CB 16 - Synchrocheck for one CB 17 - Auxiliary transformers for disturbance recorder Two relay panels 600 mm x 650 mm x 2250 mm Functional Integration Functional Integration

4 1 - Distance protection 2 - Three-phase power swing unit 3 - Directional earth fault protection 4 - AC supervision circuits 5 - DC supervision circuits 6 - STUB protection 7 - Auxiliary relays 8 - Fault locator 9 - (Printer for fault locator) 10 - Disturbance recorder 11 - Signaling unit 12 - Parts of event recorder 13 - Breaker failure protection - 1 CB 14 - Tripping relays 15 - Autoreclosing for one CB 16 - Synchrocheck for one CB 17 - Auxiliary transformers for disturbance recorder Two relay panels 600 mm x 650 mm x 2250 mm E C Functional Integration Functional Integration

5 1 - Distance protection 2 - Three-phase power swing unit 3 - Directional earth fault protection 4 - AC supervision circuits 5 - DC supervision circuits 6 - STUB protection 7 - Auxiliary relays 8 - Fault locator 9 - (Printer for fault locator) 10 - Disturbance recorder 11 - Signalling unit 12 - Parts of event recorder 13 - Breaker failure protection - 1 CB 14 - Tripping relays 15 - Autoreclosing for one CB 16 - Synchrocheck for one CB 17 - Auxiliary transformers for disturbance recorder Two relay panels 600 mm x 650 mm x 2250 mm E C + SELF SUPERVISION +COMMUNICATION+++++ Functional Integration Functional Integration

6 And What Shall We Do Now? And What Shall We Do Now? RCC

7 And What Shall We Do Now? And What Shall We Do Now? RCC IEC61850

8 And What Shall We Do Now? And What Shall We Do Now? RCC IEC61850

9 And What Shall We Do Now? And What Shall We Do Now? RCC IEC61850

10 And What Shall We Do Now? And What Shall We Do Now? RCC IEC61850

11 And What Shall We Do Now? And What Shall We Do Now? RCC IEC61850 iiii

12 And What Shall We Do Now? And What Shall We Do Now? RCC IEC61850 iiii

13 And What Shall We Do Now? And What Shall We Do Now? RCC IEC61850 iiii Power

14 No problem with problems Power And What Shall We Do Now? And What Shall We Do Now? RCC iiii