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CIM Issues #7117

Relax cardinality requirement of VoltageCompensatorDynamics model for every instance of an ExcitationSystemDynamics model.

Added by Becky Iverson 13 days ago. Updated 13 days ago.

Status:
New
Priority:
Normal
Author/Contact Info:
Becky Iverson
Base Release:
Grid18v15
Solution to be Applied To:
Solution Version:
Solution Applied By:
Completion Date:
CIM Keywords:
61970-Dynamics
Breaking Change:
No
Breaking Change Description:
CIM Impacted Groups:
WG13
Requestor:
Standard(s):

IEC61970-457

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

Description

Change the cardinality from 1..1 to 0..1 for the VoltageCompensatorDynamics association with the ExcitationSystemDynamics. Generator Dynamic models exist with Excitation models that do not require a VoltageCompensator model. All other types of models associated with the ExcitationSystemDynamics are optional with a cardinality of 0..1. VoltageCompensatorDynamics is the only class that has a required 1..1 cardinality.

In fact, even the Examples shown in the Dynamics package contradict this required association (each diagram shows an example of an Exciter dynamic model that does not have a Voltage Compensator model).

Files

ExampleStandardModel.jpg View ExampleStandardModel.jpg 133 KB Becky Iverson, 01/23/2025 01:58 PM
ExampleFunctionBlockProprietaryModel.jpg View ExampleFunctionBlockProprietaryModel.jpg 159 KB Becky Iverson, 01/23/2025 01:58 PM

Proposed Solution

Change the cardinality from 1..1 to 0..1 for the VoltageCompensatorDynamics association with the ExcitationSystemDynamics.

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