CIM/GID Interoperability Testing
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Presented by Lars-Ola Österlund
At CIM Users group 2008-06-10 in Västerås
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The CIM And GID Is...
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The Common Information Model (CIM) for the Utility industry
A standard from IEC TC57
Described in UML (Unified Modeling Language)
Documented in several specifications
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IEC61970-301 Core information model
IEC61970-452 Transmission network model exchange
IEC61970-501 RDF Schema version of the UML
IEC61970-552-4 CIMXML data exchange format
IEC61968-11 extended information model
and several more ...
Generic Interface Definition (GID) APIs described in
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IEC61970 400 documents.
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Evolution Of The CIM
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Originated as an EPRI project 1994
EPRI report TR-106324 June 1996
IEC TC57/WG13 created September 1996
UML used to describe the data model in 1998
IEC TC57/WG14 added DMS extensions in 2003
CIM Market extensions (CME) created 2004
IEC TC57/WG16 ETSO and CME harmonization late 2004
CIM for planning sponsored by EPRI started in 2006
Several utilities use CIM to support systems integration, e.g.
ERCOT
CIM continue to evolve...
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Correctness Of The CIM
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Several versions of the CIM has been released since
1996 when CIM was first released
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Does the CIM work?
New versions emerges because
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New functionality supported
 Errors corrected
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Interoperability testing a way to demonstrate and
verify correctness
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CIM Interoperability Tests
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Was introduced to
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Verify correctness of
 IEC
CIM standards
 Vendor implementations
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First test year 2000
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Goal to verify the CIM works
Since then annual tests
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Demonstrate interoperability
To verify changes and corrections
Each test documented in a report from EPRI
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CIM Releases
CIM
Profile
Date
cim05
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December 1996
cim06
cim07
cimu07
cimu08
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April 1997
April 1998
April 1998
August 1999
cimu09a_001215
CPSM 2000-12-06
December 2000
cim10_010825c
CPSM 2001-04-02
April 2001
cim10_011015
CPSM 1.5
September 2001
cim10_011015
CPSM 1.6
July 2002
cim10_030501
CPSM 1.7
November 2003
cim10_030501
CPSM 1.8
July 2004
cim10v002
CPSM 1.9
September 2005
cim10v003
cim11 (cim10v004)
CPSM 2.0
IEC 61970-452 Rev3
March 2006
October 2006
cim12v03
IEC 61970-452 Rev4
Q1 2008
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Interoperability tests, 1
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IOP1 18 Dec 2000 1th test in Orlando
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IOP2 29 April 2001 2nd test in Las Vegas
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ABB, PTI(PsyCor), Langdale, GE Harris
2 August 2002 Beijing
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ABB, ALSTOM, Siemens, PsyCor, SISCO
IOP4 14 July 2002 4th test in San Francisco
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ABB, ALSTOM, Siemens, CIM-Logic, SISCO
IOP3 26 Sept 2001 3rd test in Monterey
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ABB, ALSTOM (and Langdale), Siemens, PsyCor, CIM-Logic,
SISCO
NEPDCC, CEPRI, NARI, Tsinghua, Luneng, Dongfang
IOP5 18 Nov 2003 5th test in San Francisco
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Alstom, Shaw PTI, SISCO, SNC Lavalin
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Interoperability tests, 2
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IOP6 19 Sept 2004 6th test at CAISO in Folsom
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IOP7 26 Sept 2005 7th test at CAISO in Folsom
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Areva, EDF, PTI, SNC Lavalin, ABB (remote)
IOP9 1 Oct 2006 9th test in Washington DC
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Areva, EDF, ABB, PTI, Siemens, SISCO, Xtensible Solutions
IOP8 30 March 2006 8th test in San Francisco
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Areva, EDF, Incremental Systems, PTI, Siemens, SISCO
ABB, EDF, GE, Siemens-PTI, SISCO
IOP10 17 Sept 2007 10th test in San Francisco
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ABB, Areva, GE, Siemens, Siemens-PTI, SNC
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Standards Being Tested
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Currently
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Core data model
 IEC
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RDF Schema version of the UML
 IEC
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61970-402 to 407
Plans to extend tests also to other specifications
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61970-552-4
GID specifications
 IEC
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61970-452
CIMXML data exchange format
 IEC
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61970-501
Transmission network model exchange profile
 IEC
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61970-301
Test Overview
CIM
-61970-301
-61960-452
-61970-552-4
CIMXML
model
file
Sending
System
Schema
Validation
Tool
Receiving
System
GID connections
-61970-402
-61970-403 (DAF++)
-61970-404 (DAIS/OPC DA)
-61970-405 (DAIS/OPC A&E)
-61970-407 (HDAIS/OPC-HDA)
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CIM
-61970-501
Test Networks
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A number of participants provides test networks
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ABB40Bus
Areva60bus
Wapa262 (GE)
Siemens100Bus
EDF networks
The test networks are typically small as functionality
is the focus
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ABB40Bus Network Overview
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Sample CIMXML Model File
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<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:cim="http://iec.ch/TC57/2007/CIM-schema-cim12#">
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...
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<cim:Substation rdf:ID="_7582201">
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<cim:IdentifiedObject.localName>MONR</cim:IdentifiedObject.localName>
<cim:IdentifiedObject.name>MONROE</cim:IdentifiedObject.name>
<cim:Substation.Region rdf:resource="#_83129201"/>
</cim:Substation>
...
<cim:VoltageLevel rdf:ID="_7583201“>
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<cim:IdentifiedObject.localName>220kV</cim:IdentifiedObject.localName>
<cim:IdentifiedObject.name>MONR220SUBNET</cim:IdentifiedObject.name>
<cim:VoltageLevel.MemberOf_Substation rdf:resource="#_7582201"/>
<cim:VoltageLevel.BaseVoltage rdf:resource="#_220000302"/>
</cim:VoltageLevel>
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</rdf:RDF>
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Tested Functionality
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Current
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Starting up
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Full import of an original model
Full re-export of imported model
Full import of a re-exported model
Run Load Flow on imported model
Preparation of an increment in Data Engineering/Modeler
Incremental model export
Incremental model import
Planned
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Use CIMXML configuration in GID/ICCP subscriptions
Run State Estimation
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How The Tests Are Conducted
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Bi-weekly preparation phone conferences
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Test procedure prepared
When standard frozen (typically June)
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Validation tools updated
Participants updates software
 Test
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Participants gather at a test location
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Tests conducted according to test procedure
Witnesses (typically from utilities) follow the tests
Results are recorded
Test report issued by EPRI
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Copies of reports can be obtained from EPRI
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networks compliant with the standards created
Sample Issues On Standards
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Ambiguities in the Core CIM (61970-301)
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Line containment
 Load model
 Voltage control
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Different interpretations of the core CIM
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Lacking support of functionality
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Measurements and state
Equivalent modeling
Model boundary definition
Profile issues (61970-452)
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Convention for association role usage
 Object identification and uniqueness
 Name lengths
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Sample Issues On Implementations
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Differences in export vs. import file
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Number of objects
 More
objects
 Less objects
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Parameter values
Object identifiers and names
Differences in Load Flow solution
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Result Evaluation
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Despite small networks used in tests it is still difficult
to compare results, i.e.
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Why does the number of objects differ in an export vs. an
import?
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Is a re-exported object the same as an imported?
 How
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to prove sameness?
Why are Load Flow solutions different?
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a difference matter?
Conclusion
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Interoperability testing has
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Demonstrated CIM/GID standards works
Improved the quality of the CIM/GID standards
Demonstrated implementation interoperability
Promoted the use of CIM/GID
Been a success
Interoperability testing needed as long as CIM/GID
standards evolve
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