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CIM Issues #5299

ACLineSegment updates for mutual coupling

Added by Pat Brown 8 months ago. Updated 8 days ago.

Status:
In Progress
Priority:
Normal
Author/Contact Info:
Tom McDermott
Base Release:
Solution to be Applied To:
iec61970cim18v01_iec61968cim14v00_iec62325cim04v08_CIM101.0
Solution Version:
Solution Applied By:
Pat Brown
Completion Date:
CIM Keywords:
61970-Wires
Breaking Change:
No
Breaking Change Description:
but at some point in the future, the MutualCoupling class could be considered for deprecation
CIM Impacted Groups:
WG13
Requestor:
Pat Brown
Standard(s):

61970-301, 61968-13

Version:
Clause:
Sub-Clause:
Paragraph:
Table:
Originally Closed in Version:
Origination Date:
Origination ID:
Originally Assigned To:
Yang Feng

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.

#1

Updated by Pat Brown 8 months 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
#2

Updated by Eric Stephan 8 days ago

  • Status changed from New to Open
#3

Updated by Eric Stephan 8 days 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.

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

See attached 2022-01-30 Device Datasheet ACLineSegment coupling UML proposal.docx for details on class, attribute and association descriptions.

#4

Updated by Eric Stephan 8 days ago

  • Proposed Solution updated (diff)
  • Decision updated (diff)

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