Communication protocols Application Process Network independent Interface SCSM

Communication protocols Application Process Network independent Interface SCSM 1 AL 1 SCSM 2 AL 2 SCSM n AL n ACSI Abstract Comm. Service Interface Specific Comm. Service Mapping Specific Interface © ABB PTHV - Page 1 Application Layer 7 Layer 1. . 6

Communication concepts Peer to peer communication; time critical Physical Device ACSI Client ACSI Server reports © ABB PTHV - Page 2 Client / Server communication Applications of "peer-to-peer" communication n tripping of circuit breakers: short information that needs to be transmitted with a low probability of loss within a few milliseconds n transmission of sampled values from instrumental transformers: high amount of data, to be transmitted within a few milliseconds, loss of data needs to be detected Physical Device req / rsp Application Data Physical Device req / rsp ACSI Server Data GOOSE Message Sampled Values Data multicast Application Physical Device Application

Communication stack Application ACSI © ABB PTHV - Page 3 GOOSE Eth. Type Samples Eth. Type Client / Server Services MMS ASN. 1 ISO Session RFC 1006 TCP IP Eth. Type Ethernet II Priority tagging 802. 1 p/802. 1 Q

Interface model Technical Services 7 Station Level 1 Bay Level 6 1 3 Protection © ABB PTHV - Page 4 Function B Function A 61850 -8 -1 4 9 8 Control 5 HV Equipment 61850 -9 -2 61850 -9 -1 Bay Level 6 3 Protection 4 Control 5 HV Equipment

System overview © ABB PTHV - Page 5 IEC 61850 -8 -1 IEC 61850 -9 -x