IEC 61968-13:2008

Overview

IEC 61968-13:2008 specifies the CIM RDF model exchange format for distribution. It defines the XML/RDF syntax and rules for exchanging bulk instance data based on the Common Information Model (CIM) to represent distribution network models. The exported CIM XML model contains enough detail to support network connectivity analysis (network tracing), outage analysis, load flow calculations and to synchronize Geographic Information Systems (GIS) with remote control/DMS databases. The standard is part of the IEC 61968 series for application integration at electric utilities and aligns with CIM model version 11 (CPSM 3.0 profile).

Key topics and requirements

• CIM RDF/CIM XML format: Uses the CIM RDF schema defined in IEC 61970-501 as the meta-model for constructing interoperable XML documents.
• Bulk instance exchange: Supports file-based model exchange to import/export complete distribution network models.
• Completeness for analysis: Exported data must enable connectivity and power system analyses (tracing, outage and load flow).
• Profiles/subsets: Defines CIM subsets (profiles) tailored for distribution use to address specific exchange needs.
• Device and topology modelling: Covers classes and mappings for distribution objects such as BaseVoltage, VoltageLevel, BusbarSection, PowerTransformer, ACLineSegment, WireArrangement, Switch, Compensator, StaticVarCompensator, EquivalentLoad, GeneratingUnit and SynchronousMachine.
• Partial-phase / unbalanced modelling: Addresses issues for partial-phase devices, impedances in unbalanced systems and switch/phase continuity semantics.
• Interoperability guidance: Style and serialization rules to ensure consistent RDF/XML documents across systems.
• Examples and annexes: Includes example European and North American distribution network datasets and comparisons with CIM XSD.

Applications and users

Who benefits:

• Utility integration architects implementing inter-application integration between DMS, SCADA, OMS and GIS.
• Systems integrators and software vendors exchanging full network models between heterogeneous systems.
• GIS and remote control/SCADA teams synchronizing network topology and asset data.
• Power system analysts who require consistent model imports for tracing, outage simulation and load flow.
• Smart grid and DER integrators modeling distributed energy resources with CIM-compatible tools.

Practical uses:

• Bulk import/export of distribution network models during system upgrades or vendor replacements.
• Synchronizing GIS with DMS/SCADA to maintain a single authoritative network model.
• Sharing network models between utilities, vendors and consultancy tools for studies and operational planning.

Related standards

• IEC 61968 series (system interfaces for distribution management)
• IEC 61970-452 (EMS-API CIM network model exchange specification)
• IEC 61970-501 (CIM RDF schema reference)
• RDF / XML / Common Information Model (CIM) concepts

Keywords: IEC 61968-13, CIM RDF, CIM XML, distribution model exchange, DMS integration, GIS synchronization, network connectivity analysis, load flow, outage analysis.