Understanding IEC 61850 Communication Protocols for High Voltage Applications
This document provides an overview of the IEC 61850 communication protocols, focusing on the application processes and the significance of client/server and peer-to-peer communication models. It highlights specific services like GOOSE and sampled values, which are critical for time-sensitive data transmission in high voltage equipment. Protocols such as MMS and data transmission over TCP/IP are discussed, emphasizing their importance in ensuring reliable communication within substations. Key aspects include priority tagging and the implications for protection and control systems at various hierarchical levels.
Understanding IEC 61850 Communication Protocols for High Voltage Applications
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Presentation Transcript
Communication protocols ApplicationProcess Network independent Interface ACSIAbstract Comm.Service Interface SCSM 1 SCSM 2 SCSM n Specific Comm. Service Mapping Specific Interface AL 1 AL 2 AL n Application Layer 7 Layer 1..6
Peer to peer communication; time critical Client / Server communication reports req / rsp req / rsp GOOSE MessageSampled Values multicast Communication concepts Physical Device Physical Device ACSI Client ACSI Server Data Data Data • Applications of "peer-to-peer" communication • tripping of circuit breakers: short information that needs to be transmitted with a low probability of loss within a few milliseconds • 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 Application Physical Device ACSI Server Data Data Data Physical Device Application Application
Communication stack Application ACSI GOOSE Samples Client / Server Services MMS ASN.1 ISO Session RFC 1006 TCP IP EthType EthType EthType Ethernet II Priority tagging 802.1p/802.1Q
61850-8-1 61850-9-2 HV Equipment HV Equipment 61850-9-1 Interface model Technical Services 7 Station Level 9 Function B Function A 1 6 1 6 Bay Level Bay Level 3 8 3 Protection Control Protection Control 4 5 4 5
System overview IEC 61850-8-1 IEC 61850-9-x