CIM Issues #5299
ACLineSegment updates for mutual coupling
61970-301, 61968-13
Description
The current mechanism for describing coupled lines (lines in sufficiently close proximity to each other to induce mutual impedances) does not support unbalanced modeling.
Files
Proposed Solution
A physical modeling approach (leveraging WireAssembly and related classes) will allow accurate unbalanced mutual modeling to be done with the results stored in a phase impedance matrix described by the PerLengthPhaseImpedance class. Balanced modeling of mutual impedances can be derived from the phase impedance matrix.
To implement this approach, modeling needs to allow the identification of a group of line segments that are coupled. Two new classes are proposed that support such grouping: CoupledLineSegmentGroup and LineSegmentCoupling.
Decision
09/22/2022- WG approves and updates to the 301 are required. Recommend Tom McDermott, Kurt Hunter as reviewers.
13 June 2023, Oslo - Apply UML changes
Release Notes
Wires package updated with
Add class LineSegmentCoupling, a child of IdentifiedObject
with attributes
.coupledLineNumber
.reverseFlow
.xOffset
Add class CoupledLineSegmentGroup, a child of IdentifiedObject
with no attributes
Add association LineSegmentCoupling.ACLineSegment
Add association LineSegmentCoupling.CoupledLineSegmentGroup
These changes are also applied in 452 SC profile where the following attributes are set to required
.coupledLineNumber
.reverseFlow
.xOffset
MutualCoupling class is set to deprecated in wires package and in 452 SC profile.
Updated by Pat Brown almost 3 years ago
- Breaking Change Description changed from but at some point in the future, the MutualCoupling class should be considered for deprecation to but at some point in the future, the MutualCoupling class could be considered for deprecation
Updated by Eric Stephan about 2 years ago
- Status changed from Open to In Progress
- Release Notes updated (diff)
- Originally Assigned To set to Yang Feng
The following was originally in the release notes section. Posted here to capture original notes.
.coupledLineNumberAdd class LineSegmentCoupling, a child of IdentifiedObject, with attributes
.reverseFlow
.xOffset
Add class CoupledLineSegmentGroup, a child of IdentifiedObject, with no attributes
Add association LineSegmentCoupling.ACLineSegment
Add association LineSegmentCoupling.CoupledLineSegmentGroup
See attached 2022-01-30 Device Datasheet ACLineSegment coupling UML proposal.docx for details on class, attribute and association descriptions.
Updated by Eric Stephan about 2 years ago
Updated by Chavdar Ivanov about 1 year ago
- Status changed from Review to Closed
- Solution to be Applied To changed from iec61970cim18v01_iec61968cim14v00_iec62325cim04v08_CIM101.0 to CIM18v07
- Solution Version set to CIM18v07
- Solution Applied By changed from Pat Brown to Chavdar Ivanov
- Completion Date set to 10/08/2023
- Release Notes updated (diff)