This part of IEC 61850 provides a comprehensive overview on the different aspects that need to be considered while using IEC 61850 for information exchange between substations. In particular, this technical report
defines use cases that require an information exchange between substations;
describes the communication requirements;
gives guidelines for the communication services and communication architecture to be used;
defines data as a prerequisite for interoperable applications;
does not define implementations which guarantee interoperability between different IEDs;
describes the usage and enhancements of the configuration language SCL.