The protection relay is modelled according to IEC 61850. This means that the functionality of the protection relay is represented in a data model in accordance with the standard and the protection relay supports a wide range of the services provided by the standard.
- Process data: monitoring of statuses and measurements
- Application data: protection activation, tripping, fault recordings
- Disturbance records
- Control commands
- Protection settings
- Settings and setting groups
- Configuration data
- Diagnostics and self-supervision
- Fast horizontal communication between devices
- Time synchronization
- File transfer
As this protection relay supports both versions of IEC 61850, Edition 1 and Edition 2.1, there are small differences in the IEC 61850 data models depending on the used version. Generally, the relay’s protection and control functionalities are independent of the IEC 61850 version used. Any differences between data model versions are documented.
It is possible to have Edition 1 and Edition 2 relays configured in the same PCM600 project. The PCM600 project's SCL edition is the highest SCL edition of the relays in the project, but if IEC 61850 is not used for the station bus, either version can be applied. The protection relay's IEC 61850 version is by default Edition 2. See Table 1 for the limitations in identification lengths in IEC 61850 versions and, in case of a mixed system, consider them when engineering. Edition 2 introduces new common data classes, which work only with Edition 2 capable devices.