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CIM Issues #6528

Evaluate information provided by IntraphaseSpacing class

Added by Pat Brown about 1 year ago. Updated 2 months ago.

Status:
Open
Priority:
Normal
Author/Contact Info:
Alexander Anderson
Base Release:
Solution to be Applied To:
Solution Version:
Solution Applied By:
Completion Date:
CIM Keywords:
61970-Wires
Breaking Change:
Yes
Breaking Change Description:
may change attributes of IntraphaseSpacing class, which used to be the WireSpacingInfo class (before Redmine issues 5295:5297:5296 and one other)and might be implemented by
CIM Impacted Groups:
WG13
Requestor:
Pat Brown
Standard(s):

61968-13

Version:
Clause:
Sub-Clause:
Paragraph:
Table:
Originally Closed in Version:
Origination Date:
09/20/2023
Origination ID:
Originally Assigned To:

Description

IntraphaseSpacing represents the positions of a set of wires carrying the same phase of the same ACLineSegment. (The real-world examples of the 'set of wires' that IntraphaseSpacing represents are those sets of 2, 3 or 4 wires separated by periodically placed spacers that are frequently used in transmission lines). The existing attributes of the IntraphaseSpacing class are a simple description of the wire positioning assuming that the wires are equally spaced placed in positions 'around a circle'. This means of describing the wire positions for the set of wires may not be as sophisticated or flexible as is necessary and/or it may not reflect the manner in which various network analysis tools model these 'sets of wires'. This issue is being created to start the exploration of the adequacy of the current modelling.

The attached write up from PNNL was created in August, 2019 and appears to be in response to the unbalanced ACLineSegment-related modelling changes introduced by Edition 2 of 61968-13. It is included in this Redmine issue as it was provided as background to the WG13 discussion that led to the creation of this issue. Its references to WireSpacingInfo (the class which was renamed to IntraPhaseSpacing when its use as a descriptor of multiple positions carrying the same phase was clarified) reflect the previous use of the class to describe positions of wires carrying different phases. A more current understanding of the use and modelling context of the IntraphaseSpacing class can be gained from Redmine issues 5295, 5296, 5297, 5298. Those issues resulted in the move of the IntraphaseSpacing class to the 61970 package, paving the way for the creation of this issue.

Files

IntraphaseSpacing rewording initially suggested by Redmine 5295-5298 but withdrawn .docx IntraphaseSpacing rewording initially suggested by Redmine 5295-5298 but withdrawn .docx 18.7 KB Pat Brown, 09/20/2023 01:04 PM

Decision

18-Sep-2024 Joint TF Hybrid meetings:
Reviewed. Currently the proposed class is not in our copy of CIM18v12. Therefore this ticket should be revisited once we receive the new merged model from TF14/TF16.

We need to evaluate whether this class (assuming it is in TF14 model) can indeed be moved into the Grid package (and included in the CIM18 301). It may be that if it exists in the model it has association/generalization that makes it prohibitive to move.

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