CIM Issues #3922
Angle measurements Direct angle SCADA measurements need to
Description
Angle measurements
Direct angle SCADA measurements need to be clearly defined and convenient to model because they will become much more common. The 61970-452 and 301 presently define a cim:Measurement.measurementType:String normative table with "Angle" as one type, but presumably this only the local voltage and curerent angle.. It is not clear how to use CIM to specify PMU type angle measurements that are referenced to something not local. Method to model an angle difference or specify voltage or current angle relative to a reference angle is needed.
Common measurement types should be specified in the core model and not left to each profile to define/redefine. The SCADA model must be left open to extension to add specific localized meaning to SCADA values.
61850 measurement types should map into 61970 types (as they are documented in 61970-301).
Entered as action item from WG14 modeling call. Herb Falk also may have additional input.
Proposed Solution
Resolution needs work yet.
One potential option is to include "61850 vector" or phasor values which include both a magnitude and angle value, but clealry we need simple angle and simple magnitude support as well. A new measurement subtype might be tramatic to implementations and the CIM moddel in general. Another option is additoinal measurementType normative values. Is this still an issue? 6/26/2019
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