1. © ABB - Page 1 Line Protection Traditional approach

2. © ABB - Page 2 Traditional system architecture Control Center HMI Engineering 10 MBit/s Switch Router Station Bus Relay A Bay Controller Conventional Switchgear Conventional CT / VT's Relay B Relay A Bay Controller Conventional Switchgear Relay B Conventional CT / VT's

3. © ABB - Page 3 Line Protection Logical Device “Merging Unit” LN PCTR LN TVTR LN PCTR LN TCTR IEC 61850-9-1 Introducing new sensor technology

4. © ABB - Page 4 System architecture using 61850-9-1 Control Center HMI Engineering 10 MBit/s Switch Router Station Bus Relay A Bay Controller Conventional Switchgear Modern CT / VT's Relay B Relay A Bay Controller Conventional Switchgear Modern CT / VT's Relay B 9-1 link

5. © ABB - Page 5 Logical Device “Merging Unit” LN PCTR LN TVTR LN PCTR LN TCTR IEC 61850-9-2 Logical Device “Breaker IED” LN PCTR LN XCBR Logical Device “Breaker IED” LN PCTR LN XCBR Line Protection Introducing breaker IED: full process bus solution

6. © ABB - Page 6 System architecture using 61850-9-2 Control Center HMI Engineering 10 MBit/s Switch Router Station Bus Relay A Bay Controller Modern Switchgear Modern CT / VT's Relay B Relay A Bay Controller Modern Switchgear Modern CT / VT's Relay B Process Bus

7. © ABB - Page 7 System architecture using one network only Control Center HMI Engineering 10 MBit/s Switch Router Station Bus Relay A Bay Controller Modern Switchgear Modern CT / VT's Relay B Relay A Bay Controller Modern Switchgear Modern CT / VT's Relay B Process Bus