Common Data classes

IEC 61850-7-3 defines common data classes for a wide range of well known applications. The
core common data classes are classified into the following groups:

– status information,
– measurand information
– controllable status information,
– controllable analogue information,
– status settings,
– analogue settings
– description information.

There are services to exchange these data.The services defined in IEC 61850-7-2 are called abstract services.

The four main building blocks of the Substation Automation System

• the substation automation system specific information models(logical nodes and data)
• the information exchange methods(interface)
• the mapping to concrete communication protocols, (mapping to MMS and TCP/IP)
• the configuration of a substation IED.