CIM Issues

Presentation to CIM UML Features Proposal group 8 January 2024
CIM_DataModels_forDER_20250108A.pdf

CIM models for capabilities of Grid Edge Devices and EV as DERs

Context: two groups have a need for CIM models to describe resource nameplate and control capability
TC 69 JWG 15 : Design the information modelling for information exchange with EV charging management systems
TC 57 WG 21 : resource modelling for generic Grid Edge Devices for flexibility services

Various standards address information exchange with remote device, but these do not have CIM equivalents
IEEE 1547, IEEE 2030.5, IEC 61850 models defined in part 7-420, mappings to IEEE 1815.2, Modbus (Sunspec alliance)

The presentation describes existing models

• Historical : IEC 61968-5 Metering package EndDeviceGroup class to manage groups of EndDevices. Smart Inverters in the DER context, are considered types of EndDevices
• Specialized : IEC 61970-302 IEEE1547Dynamics package for dynamics analysis of one or a few DER
• Proposed : Asset - with reference to an Asset Type based on make, model version
• To harmonize & extend : IEC 62746-4 RegisteredDistributedResource and IEC 61970-301 Conducting Equipment – part of wires model for network analysis

The modelling challenge is
a. define a set of classes to hold the parameters for each function
Usable for all use cases
analysis (WG13)
operation scheduling (WG21)
real-time exchanges (WG14 - replace IEC 61968-5)

b. Define a CIM style naming convention for the attributes, with mapping to existing protocols

Presentation to UCA TF13 29 January 2024
CIM_DataModels_forDER_20250129A

CIM models for capabilities of Grid Edge Devices and EV as DERs

Proposes some principles and examples for modelling

Principles:
Assets, AssetInfo – used to initialize Grid, Market resource models
Implies similar, maybe identical classes associated to Asset or PowerSystemResource

Market and Grid resources are different views => add an explicit association
Market:RegisteredDistributedResource <--> Grid:{PowerElectronicsConnection + n*PowerElectronicsUnit}

Grid resource modelling can re-use RegisteredResource aggregation

Grid and Market views could / should share same model of control capabilities

Noting:
IEC 62746-4 models partially supersede DERGroup from IEC 61968-5.
Information from IEC 61968-5 DERFunction, DERMonitorableParameter could be modelled in more generic ways

Resource associations with Measurements and Meters are a way to record mappings to the real-time communication systems & protocols.
Other mappings like IEC 61850 and IEEE 2030.5 may need new classes

Presentation to CIM UML Features Proposal group 13 February 2025

Slides 6-9 updated to show association from EnergyConnection to RegisteredResource

Slides 13,14 show proposal for association from EndDeviceGroup to [a virtual instance of] EnergyConnection
in order to replace DERFunctions with information from Function Blocks

Uploaded diagram showing associations to UsagePoint
Note this includes the association changes proposed in https://redmine.ucaiug.org/issues/5312

Move UsagePoint -> Equipment to UsagePoint -> PowerSystemResource

Add UsagePoint -> ACDCTerminal (shown as UsagePoint -> Terminal on the diagram)

Insert slides 7,8,9 to show settings for FunctionBlocks
Add slide 18 with copy CIM_DataModels_forDER_UsagePoint_20250307.pptx