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CIM Issues #5868

New BusSegment for busbar modeling

Added by Yang Feng almost 3 years ago. Updated 15 days ago.

Status:
In Progress
Priority:
Normal
Author/Contact Info:
Chuck DuBose
Base Release:
CIM17
Solution to be Applied To:
CIM18v16
Solution Version:
CIM18v16
Solution Applied By:
Chavdar Ivanov
Completion Date:
04/06/2025
CIM Keywords:
61970-Wires
Breaking Change:
Yes
Breaking Change Description:
Introducing BusSegment class may break the backward compatibility and introduces alternate ways of modeling a busbar
CIM Impacted Groups:
WG13
Requestor:
Standard(s):
Version:
Clause:
Sub-Clause:
Paragraph:
Table:
Originally Closed in Version:
Origination Date:
06/08/2022
Origination ID:
Originally Assigned To:

Description

The current BusBarSection class is a single terminal ConductingEquipment that represents where the physical busbar is in the substation.
In a recent use case presented from SaskPower (by Chuck and jointly with Judy), the busbar construction could be phased and different materials might be used among phases.
This will lead to a single busbar with multiple ratings (flow & voltage) and in a practical power-flow study, they would be modeled as multiple buses in order to report violations properly.

Files

Bus Segment Use Case.pdf View Bus Segment Use Case.pdf 910 KB Yang Feng, 06/26/2022 10:02 PM

Proposed Solution

Chuck has presented a proposal on BusSegment as a two-terminal ConductingEquipment to 'separate' the single busbar into multiple pieces.
Details can be found as attached.

Decision

19-Sep-2024 Joint TF Hybrid Meetings - Minneapolis:
Reviewed. The following is needed:

- AI: Add required information to the 301 template.
- AI: Ensure it is in the 452 template.
- AI: Have agreed to take the normalRetained (in the -452) and retained (in the -456) approach to Switch and BusSegment

The above 3 action items have been completed in the model in CIM18v16 however, the 452 and 456 jCleanCim templates need to be updated using the use case documentation that Chuck has provided.

Release Notes

We added to both the Switch and BusSegment classes a new normalRetained attribute of type Boolean.

Profile specific impacts include the following:

  • The BusSegment class has been added to the 452 Core EQ profile for CIM18.
  • The BusSegment class has been added to the 456 SSH profile for CIM18.
  • The new normalRetained attribute has been added to each of these respective classes within the 452 Core EQ profile and declared as required.
  • The Switch.retained attribute which current exists in the 452 Core EQ profile has been moved to the 456 SSH profile and declared as required.
  • The BusSegment.retained was added to the 456 SSH profile and declared as required.

Related issues

Precedes WG13 Issues - CIM Issues #5870: BusSegment - ProfilesClosedActions
Precedes WG13 Issues - CIM Issues #5869: BusSegment - UML updatesClosedActions

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