The Technical Report IEC/TR 61850-90-1 (Substation to Substation Communication) has been published in March 2010 – quite new part of IEC 61850:
Is this document part of IEC 61850 Edition 1 or IEC 61850 Edition 2? Neither nor!
It just is IEC/TR 61850-90-1 Edition1 – Edition 1 of part 90-1; NOT a part of IEC 61850 Edition 1. There was never an official Edition 1 of the SERIES IEC 61850 nor will there be an Edition 2 of the whole SERIES.
Vendors are often making statements like “Full compatibility between IEC 61850 Editions 1 and 2” or “Efficient operating concepts by flexible engineering of
IEC 61850 Edition 2” … What does that mean? Hm, it seems to be a marketing expression, or?
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