Sorry if this is a dumb question, but since I don't have much experience with IEC 61850 compliant devices, I am having trouble creating the "big picture" of how the whole system is being configured in practice.
Specifically, I don't understand how the devices which transmit data GOOSE or SV (without mentioning MMS in their datasheets) use the Substation Configuration Language (SCL) in practice, i.e. I cannot seem to find the exact part which mandates how the configuration is transferred to actual devices.
Can somebody clarify which part of the standard describes this? Are these files transmitted over FTP, or over custom vendor (proprietary) protocols, or does MMS provide a way to transmit SCL files in a standardized manner?