1748 Arrays of CDC
Created: 20 Jan 2021
Status: Future Improvement
Part: Part 7-4 (2020; Edition 2.1)
Some fault location algorithms for tapped lines return several possible places(the amount is changed from one case to another) where a fault could be. As far as RFLO.FltDiskm belongs to CDC MV it is not possible to wrap such family of algorithms by LN RFLO due to the impossibility to define the array of float values according to IEC61850 rules. It is impossible to solve it even by adding custom DO because no suitable CDCs, and custom CDCs are prohibited.
An ideal solution would be a possibility to define arrays of standard CDC, but there is no such option now.
Existing HMV CDC(single CDC in measurement group that somehow allows to model array of float values) contains some mandatory attributes as Frequency, numCyc and so on, that makes no sense here.
I would propose several options to address that issue:
1. Adding the way to define arrays of standard CDC
2. Defining the standard CDC that contains an array of float values.
3. Setting presence condition for RFLO.FltDiskm to Omulti
Approved for future improvement
||15 Feb 21
The description of the tissue does not show any relevance for interoperability of the current version of the standard. So it will be stated as an idea in WG10 discussions for future improvement.
||28 Jan 21
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