1581 Synchrophasor positive sequence cannot be mapped to SEQ cdc
Created: 18 May 2017
Status: In Force (green)
Part: Part 7-3 (2010; Edition 2)
Category: Issue for edition 2 of this part
Most of currently available PMUs (Phasor Measurement Units) are able
to compute the positive sequence using synchrophasor filtering algorithms.
In application where we would transmit synchrophasor values using the IEC61850-90-5 TR
transport, this computed value needs to be mapped to the IEC61850 model.
Current there is no possibility to map correctly this value to IEC61850 due to these 2 issues:
1.The PhaseReferenceKind enum type which define the angle reference doesn't
have a "Synchrophasor" value like the PhaseAngleReferenceKind has.
2.Most PMUs only computes the positive sequence using PMU algorithms, but
the SEQ cdc doesn't allow a single sequence to be present (c1,c2,c3 are
To fix these 2 issues I would propose:
1.Add an enum value to the PhaseReferenceKind enum as follow:
2.In the SEQ cdc, change c2 and c3 From Mandatory to Optional in case where
phsRef attribute is "Synchrophasor".
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