Section 4 Station communication
About this chapter
This chapter describes the communication possibilities in a SA-system.
4.1 Overview
Each IED is provided with a communication interface, enabling it to connect to one or
many substation level systems or equipment, either on the Substation Automation (SA)
bus or Substation Monitoring (SM) bus.
Following communication protocols are available:
• IEC 61850-8-1 communication protocol
• IEC 61850-9-2LE communication protocol
• LON communication protocol
• SPA or IEC 60870-5-103 communication protocol
• DNP3.0 communication protocol
Theoretically, several protocols can be combined in the same IED.
4.2 IEC 61850-8-1 communication protocol
4.2.1 Application IEC 61850-8-1
IEC 61850-8-1 communication protocol allows vertical communication to HSI clients
and allows horizontal communication between two or more intelligent electronic
devices (IEDs) from one or several vendors to exchange information and to use it in
the performance of their functions and for correct co-operation.
GOOSE (Generic Object Oriented Substation Event), which is a part of IEC 61850–8–
1 standard, allows the IEDs to communicate state and control information amongst
themselves, using a publish-subscribe mechanism. That is, upon detecting an event, the
IED(s) use a multi-cast transmission to notify those devices that have registered to
receive the data. An IED can, by publishing a GOOSE message, report its status. It can
also request a control action to be directed at any device in the network.
1MRK504116-UUS C Section 4
Station communication
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