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1

Welcome to the CIM University

CESI/TERNA Milan, Italy

15 June 2010

2

Introduction to CIM And Its Role in the Utility Enterprise

Data Preparation, Exchange, Integration, and Enterprise Information Management

3

Presentation Contents

• Background• What is the CIM• How the CIM is used in the Utility Enterprise

– As a semantic model for information exchange

• Three Layer Architecture for Using the CIM Standards• CIM UML model• Profiles for business context• Implementation syntax

– XML Schema – for messaging– RDF Schema - for model exchange

• Where to get CIM information

4

CIM History• 1992 – Unified Information turned over a data model based on the EPRI OTS

to the CCAPI Task Force with the understanding it would be turned into an industry standard model

• 1993 to 1996 - The CCAPI task force expanded the data model with a primary goal of enabling use of plug compatible applications to help protect utility investment in applications

– Entity Relationship Visio Diagram with MS Access database• 1996 – The CIM was turned over to IEC Technical Committee 57, Working

Group 13&14, where it is advancing through the standards process. It covers both electric utility transmission and distribution business operations

– Converted to UML and initially maintained in Rational Rose • 2003 – ISO/RTO Council and EPRI sponsored an initiative to expand CIM

into Market Operations, a.k.a. CME• 2005 – First edition of IEC 61970-301 CIM Base• 2005 – CIM Users Group established under UCA Users Group• 2008 – CIM adopted by UCTE• 2009 – NIST identifies CIM as key standard for Smart Grid interoperability• 2010 – ENTSO-E migrates to CIM

5

The IEC Common Information Model (CIM) - What Is It?• A set of standards in enable system integration and information exchange

based on a common information model– Provides a general information model and message/file schemas for

messages/files exchanged between systems• A key differentiator: The CIM standards are based on a Unified Modeling

Language (UML) based information model representing real-world objects and information entities exchanged within the value chain of the electric power industry

– Provides common semantics for all information exchanges– Maintained by IEC in Sparx Enterprise Architect modeling tools– Enable data access in a standard way

• Common language to navigate and access complex data structures in any database– Provides a hierarchical view of data for browsing and access with no knowledge of actual logical

schema• Inspiration for logical data schemas (e.g., for an operational data store)

– Not tied to a particular application’s view of the world• But permits same model to be used by all applications to facilitate information sharing

between applications

6

Sample Power System Model

Generator AC Line Substation

Company

Load

Operates

Operates

Belongs To

Member Of

Owns

Load Area

Connects To

Connects To

Connects To

7

Application of Information Model

SISCO SYSTEMS

Common model creates understanding

Application 1 Application 2

Mode

l Map

ping

Mode

l Map

ping

8

Information is Needed From Many “Islands of Automation”

AM/FM/GIS

Mobile

SCADA

Work Mgmt

CustomerInformation

NetworkManagement

Maintenance& Inspection

HRFinancial

ContractManagement

ProtectionAsset

Planning

RiskAnalysis

NetworkPlanning

Historian OutageManagement

PropertyMgmt Compliance

The CIM

VENDORHELP!

9

The Common Language Should Provide Relevant Information To A User Regardless of Source

EngineeringConcerns

MaterialsManagement

ConcernsConstruction

Concerns

OperationsConcerns

ProtectionConcerns

MaintenanceConcerns

10

The Needs of Various Users – Some Same, Some Different

Engineering Concerns The logical view of how the type of equipment fits (will fit) in the electrical network. Nominal configuration of “as-built” and “future” states. • Field Name • Spatial Location • Version • Physical Connectivity • Load Projections • Capacity Requirements • Compatible Unit • Equipment Ratings

Construction Concerns Lifecycle information regarding when and how to install equipment: • Field Name • Location • Equipment Manufacturer/Model • Compatible Unit • Equipment Ratings • Work Order • Work Design • Installation Schedule &Budget • Permits • Manufacturer Specifications • Safety Requirements

Materials Management Concerns Planning and tracking material requirements for construction and maintenance. Information about physical pieces of equipment. • Asset Identifier • Compatible Unit • Equipment Component Type • Equipment Manufacturer/Model • Serial Number • Location • Equipment Location History • Manufacturer Specifications

11

The Needs of Various Users – Some Same, Some Different (continued)

Operations Concerns Real-time condition of equipment and electrical network necessary to maintain reliable network operation: • Field Name • Schematics & Spatial Location • Electrical Connectivity • Operational Limits (dynamic) • Equipment Status • Clearances • Network Measurements (voltage,

current, frequency) • Equipment Faults • Weather Measurements • Operational Restrictions

Maintenance Concerns Lifecycle information regarding when and how equipment is maintained: • Field Name • Location • Equipment Manufacturer/Model • Equipment Ratings • Routine Maintenance • Testing & Diagnostics

Procedures • Equipment Condition • Inspection Schedule • Equipment Repair Records • Site Service Records • Maintenance Budget • Safety Requirements

Protection Concerns Setting and configuring relays based on equipment and network protection requirements: • Field Name • Schematics • Electrical Connectivity • Maximum Capacity • Zones Of Protection • Equipment Status • Clearances • Network Measurements

(voltage, current, frequency, transients)

• Equipment Faults

12

Exchanging Common Language Messages Among Systems Should Provide Relevant Information To Each System That Is Harmonious With All Other Systems’ Information

WorkBlah, Blah, Blah,

Organization,Blah, Blah, Blah

MaintenanceBlah, Blah, Blah,

Organization,Blah, Blah, Blah Switching Schedule

Blah, Blah, Blah, Organization,

Blah, Blah, Blah

Load Data SetBlah, Blah, Blah,


Meter ReadingBlah, Blah, Blah,


Load ControlBlah, Blah, Blah,


Asset CatalogBlah, Blah, Blah,


CrewBlah, Blah, Blah,


Service ConnectionRequest

Blah, Blah, Blah, Organization,

Blah, Blah, Blah

Planned OutageBlah, Blah, Blah,


For example, in each of the message exchanges depicted above, the same Organization is referenced for different reasons. There should be NO inconsistencies about this Organization in them!

13

For example, a common language-based logical infrastructure facilitates collaboration among the many applications involved in Asset Management

Asset Strategy

Asset Portfolios

Risk Management

RegulatoryReporting

Financial Management

ResourceScheduling &

Planning

Equip./FleetManagement

Supply Chain Management

ContractManagement

Mobile Workforce

Mgmt.

Work Collaboration & Reporting

Work Design

Asset OwnerAsset Owner Asset ManagerAsset Manager Service ProviderService Provider

Asset Investment PlanningAsset Investment Planning Asset Program ManagementAsset Program Management

Customer ManagementCustomer Management Asset OperationsAsset Operations

CIS

CRM

IVR eBusiness EMS DMS

SCADA

OMS

Asset Planning Tool

Budget Load Forecast

ReliabilityAnalysis

NetworkAnalysis

Asset Repository

ExecutiveDashboard

Program Mgmt.

Work Mgmt.

Mobile & Dispatching

Contract Mgmt.

GISRevenue

Facility I&M

Portal

SA/DA

Metering

SRCM

[source: DistribuTECH 2003 paper by Zhou & Robinson]

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Application To Common Language Mapping – The Typical Field to Field Process Is Cumbersome

• Individual fields of data models from data sources are mapped to each other

• Approach does not scale well as the number of maps grows exponentially with each new data source

• Mapping is a challenge as ‘mappers’ must have an in depth understanding of all relevant data sources – a tall order!

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Using A Semantic Model To Simplify & Scale Up The Mapping Process

• What is a Semantic Model?– The key ingredients that make up a semantic model are a vocabulary of

basic terms, a precise specification of what those terms mean and how they relate to each other.

• How is it used?– Before making mappings, a model (or an ontology) of a given business

domain is defined. – The model is expressed in a knowledge representation language and it

contains business concepts, relationships between them and a set of rules.

– By organizing knowledge in a discrete layer for use by information systems, semantic models enable communication between computer systems in a way that is independent of the individual system technologies, information architectures and applications.

– Compared to one-to-one mappings, mapping data sources to a common semantic model offer a much more scaleable and maintainable way to manage and integrate enterprise data.

[source: TopQuadrant Technology Briefing, July 2003]

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ETLIntegration BusWeb Services

Apps.

GenericServices

Composite Applications

DW

Business Intelligence

CommonLanguage

SemanticModel

Metadata

The CIM Provides a Semantic Layer in an Enterprise Architecture

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App CIMY.1 X.1Y.2 X.2Y.3 X.3Y.4 X.4Y.5 X.5

Publisher

Publishers:One Application Connector:•Obtains Data From Application And/Or Database•Transforms Data (if necessary) to the “CommonLanguage” (a Canonical Data Model)

•Puts Data Into Message Template•Publishes The Message (Fires & Forgets)

DataWarehouse

SubstationAutomation

OMS

DistWiresModel

GridWiresModel

DAC

CIS

VRU

AM/FM/GIS

DistributionAutomation

HumanResources

OutageReporting

Event History WorkManagement

EMS

...

CIMX.1 X.2 X.3 X.4 X.5

Subscriber

CIM AppX.1 B.1X.2 B.2X.3 X.4 X.5

Subscriber

CIM AppX.1 A.1X.2 X.3 X.4 A.4X.5 A.5

Subscriber

CIM AppX.1 C.1X.2 X.3 C.3X.4 C.4X.5

Subscriber

Subscribers:Several Application Adapters Receive The Same MessageEach Adapter:•Parses Message, Pulling Out Data Needed By Application•Transforms Data (if necessary) to Local Application Format•Passes Data To Local Application And/Or Database Through Most Appropriate Means

Message Type Instance: ChangedNetworkDataSet (Expressed In Common Language)

Decoupled InformationExchange

©

2003-2004 Xtensible Solutions, Inc. 17

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The CIM and Related Standards

• But the CIM standards are more than just an abstract information model expressed in UML

• Profiles specifying a subset of the CIM classes and attributes for specific business context at a specific system interface

• Implementation models– Use of XML to create serialized files and messages

• RDF Schema-based standards for power system model exchange

• XML Schema-based standards for information message payloads

– ETL based on CIM for data base access

We Need An Organizing Framework

• Layered Reference Architecture for TC57• Based on UN/CEFACT

– Information Model– Contextual Model– Message Syntax

• Rules for Message Assembly

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TC57 Layered Architecture

CIM UML

Information and Semantic Models

Context

Message Syntax

Profile

Message XML Schema

Contextual layer restricts information model• Constrain or modify data types• Cardinality (may make mandatory)• Cannot add to information model

Message syntax describes format for instance data• Can re-label elements• Change associations to define single structure for message payloads• Mappings to various technologies can be defined

Information Model• Generalized model of all utility objects and their

relationships• Application independent

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Semantic Models and Profiles

CIM UML


Context

Message Syntax

Profile

Message XML Schema

CIM/XML RDF Schema

Relational Database

61968 Rules

CIM/XML Rules

Project Rules

Message Assembly

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To Summarize

• The CIM is an abstract information model standard expressed in UML.

• Profiles specifying a subset of the CIM classes and attributes for specific business context

• Implementation technologies, such as use of XML to create serialized files and messages– Standards for power system models– Standards for information message payloads

• Also, the CIM UML can be extended– Standard extensions for new functional areas– Private extensions for specific utility requirements

23

Example: Power Flow Network Model Exchange

CIM UML


Context

Message Syntax

Common Power System Model Profile

CIM/RDF Schema

Information Model• Defines all concepts needed for

exchange of operational load flow models

– Reused parts– New extensions

Contextual layer restricts information model• Specifies which part of CIM is used for

static model exchange• Mandatory and optional• Restrictions• But cannot add to information model

File syntax• Can re-label elements• Change associations to define single

structure for message payloads• Mappings to various technologies can

be defined

Conforms to IEC 61970-301 CIM

Conforms to IEC 61970-452

and/or -456 Model Exchange

Profile

Conforms to IEC 61970-501 and -552

CIM XML Model Exchange Format

24

Ex: Power Flow Network Model Exchange








be defined

CIM UML

Profile

CIM/XML RDFSchema

Concrete Message



or -456 Model Exchange

Profile



25

The IEC Standards for Power System Model Exchange

• The CIM translated into the industry standard eXtensible Markup Language (XML):– Uses a standard XML format that any EMS can understand using

standard Internet and/or Microsoft technologies• IEC 61970 series of standards

– Part 301 CIM Base• Specifies UML model

– Parts 452 and 456 CIM Model Exchange Specification• Specifies guidelines for the definition of specific profiles (or subsets) of the

CIM for particular power system model exchange requirements– Part 501 CIM RDF Schema

• Specifies mapping between UML model and XML model using RDF Schema• This was mandated by NERC for exchange of models between Reliability

Coordinators– Part 552 CIM XML Model Exchange Format

• Specifies simplified RDF Schema and extensions to transfer incremental updates via difference file

26

Let’s Look at each Layer of the CIM

CIM UML


Context

Message Syntax

Profiles

XML/RDF Schema

Information Model• Defines all concepts needed for any

application


given profile• Mandatory and optional• Restrictions• But cannot add to information model



be defined

27

Foundational Relationships Of The CIM

PowerSystemResourceElectrical Network Role Used For

Planning, Operations, etc.

AssetPhysical Plant Filling A Role

Such As A Transformer, Pole, etc.

LocationWhere To Find Something By

GPS, Address, Electronically, etc.

OrganisationEntities Performing Roles Such

As Operations, Tax Authority

ContactPeople Performing Roles SuchDispatcher, Field Operator, etc.

DocumentInformation Containers Such AsTrouble Ticket, Work Orders, etc.

CustomerIndustrial, Commercial, & Residential

Which Can Have Multiple Accounts

28

CIM Packagesclass M ain

EnergySchedulingFinancialM arketOperations

CombinedVersion{root}

+ date: AbsoluteDateTime [0..1] = 2008-12-17-see-... {readOnly }+ v ersion: String [0..1] = iec61970CIM13v 1... {readOnly }

Reservation

IEC61970

IEC61968

29

WG13 CIM Packages - 61970class M ain

Equivalents

Protection

SCADA

Generation

OutageLoadM odel

TopologyM eas

Wires

«Global»Domain

Core

OperationalLimits

ControlArea

GenerationDynamics

(from Generat ion)

Production

(from Generat ion)

«WorkInProgress»StateVariables

«WorkInProgress»Contingency

30

WG14 CIM Packages - 61968pkg M ain

AssetsPointOriented

Customers

Common

Operations

ERPSupport

Work

Assets

M etering PaymentM etering

Domain2Locations

TypeAssetAssetM odelsAssetsLinear

Planning

LoadControl

GM LSupport

Parts 3, 4 (and 5?)

Part 4

Parts (5 and 7)?

Part 6

Part 8

Part 9

Part 10?

31

WG16 CIM Market Extensions

Security Constraints

Bid FTR

RTO

Clearing Results

Resource

WG16

32

CIM IEC Standards

• 61970 CIM UML has annual release cycle– Current official annual release is IEC61970CIM14v13– Basis for IEC 61970-301 CIM Base Fourth Edition

• Word document auto-generated from the UML electronic model– Information system and Profile documents are synchronized with

UML model release

• 61968 CIM UML different update cycles– Basis for IEC 61968-11 CIM Distribution Information Exchange

Model

• Complete CIM UML available as a combined model on CIMug Sharepoint site– iec61970cim14v13_iec61968cim10v28_combined

33

Structureheight : ShortLengthweedAbate : BooleanweedRemDate : AbsoluteDatefumigant : StringfumigantApplyDate : AbsoluteDatejpaRefNum : String

Asset

code : Stringutc : Stringnumber : StringserialNumber : SerialNumberassetType : StringmaufacturedDate : AbsoluteDateinstallationDate : AbsoluteDateinServiceDate : AbsoluteDateoutOfServiceDate : AbsoluteDateremovalDate : AbsoluteDatewarrantyDate : AbsoluteDatefinancialValue : Moneystatus : StringstatusDate : AbsoluteDatecritical : BooleancorpStandard : StringremovalReason : Stringcondition : StringplantTransferDate : AbsoluteDateusage : StringpurchaseDate : AbsoluteDatepurchasePrice : MoneypurchaseOrderNumber : String

(from AssetBasics)

Pole

classification : Stringspecies : Stringtreatment : Stringbase : Stringpreservative : StringtreatedDate : AbsoluteDatebreastBlock : Boolean

Streetlight

rating : StringarmLength : ShortLength

0..1

0..n

+AttachedTo_Pole

0..1 +Support_Streetlights0..n

The CIM Is Expressed In Unified Modeling Language (UML) Notation*

Class Name usually describes things in the real world

Associations connect classes and areassigned a role that describes the relationship

Class Attributes describesignificant aspects about the thing

This Specialization indicates that a “Pole” is a type of“Structure.” Since a “Structure” is a type of “Asset,” the Poleinherits all of the attributes from both Structure and Asset

* For more information on UML notation (a standard), refer to Martin Fowler’s book“UML Distilled,” Addison-Wesley

34

Concepts: Generalization/Inheritance

• Breaker: Specialization of ProtectedSwitch

• ProtectedSwitch: Specialization of Switch

• Switch: Specialization of Conducting Equipment

• ConductingEquipment: Specialization of Equipment

• Equipment: Specialization of PowerSystem Resource

class DocumentationExampleInheritance

Ident ifiedObject

Core: :PowerSystemResource

Core: :Equipment

Core: :ConductingEquipment

Breaker

ProtectedSwitch

PowerTransf ormer

Switch

35

Equipment Inheritance Hierarchy

class InheritanceHierarchy

Transf ormerWinding


HeatExchanger

BusbarSection

VoltageControlZone

ShuntCompensator

ACLineSegment

DCLineSegment

LoadBreakSwitch

Core: :VoltageLevel

TapChanger

PowerTransf ormer

Fuse

StaticVarCompensator

RegulatingCondEq

Rectif ierInverter

Junction

Jumper

Ground

Conductor

Disconnector

EnergySource

SeriesCompensator

ProtectedSwitch

Core: :Identif iedObject

PlantLine

FrequencyConverter

Connector

Core: : Bay

Switch

Core: :ConnectivityNodeContainer

Core: :Substation

EnergyConsumer

GroundDisconnector


Breaker

SynchronousM achine

Core: :Equipment

Core: :EquipmentContainer

CompositeSwitch

36

Naming Hierarchy 1

class NamingHierarchyPart1

Core: :Substation

Core: : Bay

Core: :VoltageLevel

Core: :SubGeographicalRegion

Line

Core: :GeographicalRegion

Core: : Identif iedObject

+ aliasName: String [0..1]+ description: String [0..1]+ localName: String [0..1]+ mRID: String [0..1]+ name: String [0..1]+ pathName: String [0..1]

Core: :Equipment



Plant


+EquipmentContainer0..1

+Equipments0..*

+Region 0..1

+Regions 0..*

+Region 0..1

+Substations 0..*

+Region

0..1

+Lines 0..*

+VoltageLev el0..1

+Bay s0..*

+Bay s 0..*

+Substation

0..1

+Substation 1

+VoltageLev els 0..*

37

Naming Hierarchy 2

class NamingHierarchyPart2

Fuse

EnergyConsumer

ShuntCompensator

Connector

BusbarSection

Breaker

ACLineSegment

Disconnector

Jumper

FrequencyConverter

EnergySource

StaticVarCompensator

Rectif ierInverter

Conductor


Core: :Equipment

DCLineSegment

SynchronousM achine

CompositeSwitch

Switch

M eas: :M easurement


Transf ormerWinding

TapChanger

PowerTransf ormer

Ground

RegulatingCondEq

GroundDisconnector

Production: :GeneratingUnit

Core: : Identif iedObject

+ aliasName: String [0..1]+ description: String [0..1]+ localName: String [0..1]+ mRID: String [0..1]+ name: String [0..1]+ pathName: String [0..1]

SeriesCompensator

ProtectedSwitch

LoadBreakSwitch

Junction

HeatExchanger

+PowerSy stemResource

0..1

+Measurements

0..*

+TransformerWindings 1..*

+PowerTransformer 1

+GeneratingUnit 0..1+Sy nchronousMachines 1..*

+HeatExchanger 0..1

+PowerTransformer 1

+CompositeSwitch 0..1

+Switches 0..*

38

Connectivity and Topology Model

class M ain


Switch/Node static Model

ConnectivityNode


Core: :Terminal

Bus/Branch calculated Model

TopologicalNode

M eas: :M easurement


TopologicalIsland


Core: :Identif iedObject

BusNameM arker

Core: :Equipment

Bus/Branch bus naming specificaitonstatic model.

ControlArea: : ControlArea

+ netInterchange: Activ ePower+ pTolerance: Activ ePower+ ty pe: ControlAreaTy peKind

+Terminals

0..*+ConductingEquipment

1

+TopologicalNode

0..*

+ControlArea0..1

+AngleRef_TopologicalIsland0..1

+AngleRef_TopologicalNode0..1

+Terminal 0..*

+TopologicalNode 0..1

+Connectiv ity Nodes

0..*

+TopologicalNode 0..1

+Measurements 0..*

+Terminal 0..1

+Connectiv ity Nodes0..*

+MemberOf_EquipmentContainer

1

+TopologicalNode

0..*

+Connectiv ity NodeContainer

0..1

+BusNameMarker 0..1

+Connectiv ity Node

0..*

+Terminals

0..*

+Connectiv ity Node

0..1

+BusNameMarker 0..*

+ControlArea

0..1

+TopologicalNodes 1..*

+TopologicalIsland 1

39

Converting a Circuit to CIM Objects

• Example to show how voltage levels, current transformers, power transformers and generators are modelled

• Circuit contains a single generating source, load, line and busbar. The circuit also contains two power transformers resulting in three voltage levels of 17kV, 33kV and 132kV

Taken from McMorran, “An Introduction to IEC 61970-301 & 61968-11: The Common Information Model”, University of Strathclyde, Glasgow, UK

40

Example Circuit as a Single Line Diagram

EnergyConsumer

Breaker

SynchronousMachine

GeneratingUnit

Breaker

BusbarSection

Breaker

ACLineSegment

Current measurement represented by Measurement

connected to Terminal

41

Representing a Power Transformer as CIM Objects• A power transformer is not mapped to a single

CIM class– Represented by a number of components with a single

PowerTransformer container class– Two-winding power transformer becomes two

TransformerWinding objects within a PowerTransformer container

• If a tap changer is present to control one of the windings– An instance of the TapChanger class is associated

with that particular winding– Also contained within the PowerTransformer instance

42

Transformer Class Diagram

Inherits from Equipment, since does not conduct

electricity

Physically connected to network and conducts electricity, so inherits

from ConductingEquipment

Part of TransformerWinding, not

separate piece of equipment

Shell of transformer, containing windings,

insulation, magnetic core, etc.

43

CIM Mapping for Transformer 17-33

• Transformer 17-33 is represented as four CIM objects

44

Transformer Model Diagram from 61970-301CIM Base

ConductingEquipment(from Core)

Equipment(from Core)

PowerSystemResource(from Core)

RegulationSchedule

TapChanger

0..1

0..n

+RegulationSchedule0..1

+TapChangers0..n

WindingTest

HeatExchanger

TransformerWinding

0..n+TapChangers

0..n

+TransformerWinding

1

1

0..n

+From_TransformerWinding1

+From_WindingTests1

0..n

+To_WindingTest

+To_TransformeWindings0..n

PowerTransformer

0..1

1

+HeatExchanger0..1

+PowerTransformer 1

1..n

1

+Contains_TransformerWindings

+MemberOf_PowerTransformer

1

45

Transformer Winding Attributes

Transformer Windingb: SusceptanceinsulationKV: VoltageconnectionType: WindingConnectionemergencyMVA : ApparentPowerg: Conductancegrounded: Booleanr: Resistancer0: ResistanceratedKV: Voltagerated MVA: ApparentPowerrground: ResistanceshortTermMVA: ApparentPowerwindingType: WindingTypex: Reactancex0: Reactancexground: Reactance

46

Example Circuit with Full CIM Mappings

• Maps to– 17 CIM classes– 45 CIM objects

• Could be extended further with addition of objects for

– control areas– equipment

owners– measurement

units– generation and

load curves– asset data

47

How The CIM Handles Location For Logical Devices And/Or The Physical Asset Performing The Device’s Role

Asset(f rom AssetBasics)

0..n+Assets

1..n

0..n

+Location1..n

Locationcoordinate : CoordinatePaircoordinateList : PointSequencepolygonFlag : Booleantype : Stringcode : String

0..n+Location

0..n

0..n+PowerSystemResources

0..n


0..1+PowerSystemResource1

0..1+Asset1

48

Types Of Document Relationship Inherited By All Assets

AssetModelnumber : Stringversion : String

0..n

0..n

Document(f rom DocumentationPa...)

Quali ficationRequirem entqualificationID : String

AssetPropertypropertyType : StringpropertyValue : Stringunits : String

AssetRatingratingType : Stringproperty : StringratingValue : Floatunits : String

InspectionRoutine(f rom As setsIns pec tion)

MaintenanceProceduretype : String

0..n

0..n


49

Activity Records

History

0..n

0..1

ErpContact(f rom ERP_Support)

0..n

0..n

ActivityRecordcreatedOn : AbsoluteDateTimestatus : StringstatusReason : Stringremarks : String

Customer(f rom ConsumerPackage)

0..n

0..n

0..n

0..n

0..n

0..1

0..n

0..n

Asset(f rom AssetBasics)

1..n

1

0..n

0..n


Location(f rom LocationPackage)

Organisation(f rom TopLev elPackage)

0..n 0..n

Work(f rom WorkInitiationPack...)

WorkTask(f rom WorkDesignPackage)

50

CIM UML in Enterprise Architect

• The CIM UML model is maintained in Sparx Enterprise Architect (EA)

• Current ENTSO-E CIM UML Model for IOP– iec61970cim15v15_iec61968cim10v16_combined.eap

• Go to UML model in EA

51

Questions?

52


CIM UML


Context

Message Syntax

Profiles

XML/RDF Schema


application





be defined

53

Profile Documents

• IEC 61970-4xx series of Component Interface Standards (CIS)– Specifies the functional requirements for interfaces that

a component (or application) implements to exchange information with other components (or applications) and/or to access publicly available data in a standard way

– Component interfaces describe the specific message contents and services that can be used by applications for this purpose

– Implementation of these messages in a particular technology is described in Part 5 of the standard

54

Common Power System Model (CPSM) Profile• IEC 61970-452 specifies the specific profile (or subset) of the CIM for

exchange of static power system data between utilities, security coordinators and other entities participating in a interconnected power system

• All parties have access to the modeling of their neighbor’s systems that is necessary to execute state estimation or power flow applications

• A companion standard, IEC 61970-552, defines the CIM XML Model Exchange Format based on the Resource Description Framework (RDF) Schema specification language which can be used to transfer power system model data for a particular profile

• Interoperability tests have validated several vendor’s products for exchanging complete power system models, partial models, and incremental updates

55

61970-452 CPSM Profile TOC Snippet

Scope.............................................................................................................................. 72 Normative References............................................................................................... 8 3 Definitions ................................................................................................................. 8 4 Overview of Data Requirements ................................................................................ 10

4.1 Overview.......................................................................................................... 10 4.2 General Requirements ..................................................................................... 10 4.3 Transformer Modeling ...................................................................................... 11 4.4 Modeling Authorities ........................................................................................ 12 4.5 Use of Measurement Classes........................................................................... 12

4.5.1 ICCP Data Exchange ........................................................................... 14 4.6 Voltage or Active Power Regulation ................................................................. 14 4.7 Use of Curves .................................................................................................. 14

4.7.1 Generating Unit Reactive Power Limits ................................................ 14 4.8 Definition of Schedules .................................................................................... 15

5 CIM Classes.............................................................................................................. 16 5.1 61970............................................................................................................... 16

5.1.1 IEC61970CIMVersion ........................................................................... 16 5.2 Core Package .................................................................................................. 17

5.2.1 BaseVoltage......................................................................................... 17 5.2.2 Bay ...................................................................................................... 17 5.2.3 CurveData ............................................................................................ 17 5.2.4 Geographical Region............................................................................ 18 5.2.5 RegularTimePoint................................................................................. 18 5.2.6 SubGeographical Region...................................................................... 18 5.2.7 Substation ............................................................................................ 19 5.2.8 Terminal ............................................................................................... 19 5.2.9 Unit ...................................................................................................... 19 5.2.10 VoltageLevel ........................................................................................ 20

5.3 Topology Package ........................................................................................... 21 5.3.1 ConnectivityNode ................................................................................. 21

5.4 Wires Package ................................................................................................. 22 5.4.1 ACLineSegment ................................................................................... 22 5.4.2 Breaker ................................................................................................ 22 5.4.3 BusbarSection...................................................................................... 23 5.4.4 Disconnector ........................................................................................ 23 5.4.5 EnergyConsumer.................................................................................. 24 5.4.6 Line...................................................................................................... 24 5.4.7 LoadBreakSwitch ................................................................................. 25 5.4.8 PowerTransformer................................................................................ 25 5.4.9 ReactiveCapabilityCurve ...................................................................... 26 5.4.10 RegulatingControl ................................................................................ 26

56


CIM UML


Context

Message Syntax

Profiles

XML/RDF Schema


application





be defined

57

XML Implementation Technologies

• XML Schema– Used for generation of message payloads for system

interfaces in system integration use cases• RDF Schema

– Used for exchange of power system models

58

What is XML?

• eXtensible Markup Language– A text-based tag language, similar in style to HTML but

with user-definable tags• Similar in use of ASCII text and tags

– Based on Standard Generalized Markup Language (SGML), which is ISO 8879.

• Self-describing• Open industry standard - W3C Recommendation

(spec)– Broad usage across industries (many XML tools

available)• Cross-platform and vendor-neutral standard• Easy to use, easy to implement

59

Basic Syntax

• Starts with XML declaration<?xml version="1.0"?>

• Rest of document inside the "root element"<TEI.2>…</TEI.2>

• Tags are used to provide information about the document content (metadata)

• Start and end tags must match exactly

60

What is an XML Element?• An XML element is everything from (including) the element's start tag to (including) the

element's end tag.• An element can contain other elements, simple text or a mixture of both. Elements can

also have attributes.• <bookstore>

<book category="CHILDREN"> <title>Harry Potter</title> <author>J K. Rowling</author> <year>2005</year> <price>29.99</price>

</book> <book category="WEB">

<title>Learning XML</title> <author>Erik T. Ray</author> <year>2003</year> <price>39.95</price>

</book> </bookstore>

• In the example above, <bookstore> and <book> have element contents, because they contain other elements. <author> has text content because it contains text.

• In the example above only <book> has an attribute (category="CHILDREN").

61

Implementation Syntax – XML Schema

• Example of use of XML Schema• Mapping Proprietary EMS Interfaces to the CIM

– Provide enterprise system access to transformer data

62

Mapping EMS Interfaces to the CIM – User access to transformer data

• EMS Native Interface attributes:– TRANS_NAME – The Transformer’s name– WINDINGA_R – The Transformer’s primary winding resistance– WINDINGA_X – The Transformer’s primary winding reactance– WINDINGB_R – The Transformer’s secondary winding resistance– WINDINGB_X – The Transformer’s secondary winding reactance– WINDINGA_V – The Transformer’s primary winding voltage– WINDINGB_V – The Transformer’s secondary winding voltage

63

Transformer Class Diagram in CIM

64

CIM Interface Mapping - Beginnings of Profile/Message Payload Definition

Two different interface attributes (WINDINGA_R

and WINDINGB_R) map to same CIM attribute

Aggregation changed from 0..n to 2

Multiplicity changed from

0..1 to 1

Multiplicity changed from

0..1 to 1

65

Message Payload in UML

Note:• Associations changed to aggregations• Parent classes removed

• Not required in actual message content• Parent classes already known by both sender and receiver

• Corollary: Only those parts of the CIM used in message exchange need to be supported by interface applications

• End result – modified class structure• Example of application of business context to information model

66

Schemas – Meta Data

– A Schema is a description or definition of the structure of a database or other data source. It provides:

• Allowable content or structure of data of a variety of types• Abstract definition of the relationships and characteristics of a

class of objects or pieces of data

– Database Schema• Defines the table names and columns, describes the

relationships between tables (via keys), and acts as a repository for triggers and stored procedures.

– XML Schema• Describes the ordering and inter-relationship of

– XML elements (i.e., sequence and nesting of tags) and – Attributes (i.e., values, types, defaults) in the class of XML

documents to which the schema applies.(source: “Professional XML Meta Data,” by Kal Ahmed, et al.)

67

XML Schema of CIM

• An XML Schema of the CIM can be generated with XML tools

• The CIM classes and attributes are used to define tags

• Then the CIM can be shown in XML as well as UML

• Example is PowerTransformer

68

XML Schema for Transformer Message

69

Sample Transformer Interface Message Payload in XML

<cim:PowerTransformer> <cim:Naming.name>Transformer SGT1</cim:Naming.name> <cim:PowerTransformer.Contains_TransformerWindings> <cim:TransformerWinding.r>0.23</cim:TransformerWinding.r> <cim:TransformerWinding.x>0.78</cim:TransformerWinding.x> <cim:TransformerWinding.windingType>WindingType.primary </cim:TransformerWinding.windingType> <cim:Equipment.MemberOf_EquipmentContainer> <cim:VoltageLevel.BaseVoltage> <cim:BaseVoltage.nominaVoltage>400 </cim:BaseVoltage.nominalVoltage> </cim:VoltageLevel.BaseVoltage> </cim:Equipment.MemberOf_EquipmenContainer> </cim:PowerTransformer.Contains_TransformerWindings> <cim:PowerTransformer.Contains_TransformerWindings> <cim:TransformerWinding.r>0.46</cim:TransformerWinding.r> <cim:TransformerWinding.x>0.87</cim:TransformerWinding.x> <cim:TransformerWinding.windingType>WindingType.secondary </cim:TransformerWinding.windingType> <cim:Equipment.MemberOf_EquipmentContainer> <cim:VoltageLevel.BaseVoltage> <cim:BaseVoltage.nominaVoltage>275 </cim:BaseVoltage.nominalVoltage> </cim:VoltageLevel.BaseVoltage> </cim:Equipment.MemberOf_EquipmenContainer> </cim:PowerTransformer.Contains_TransformerWindings>

</cim:PowerTransformer>

70

XML Implementation Technologies

• XML Schema– Used for generation of message payloads for system

interfaces in system integration use cases• RDF Schema

– Used for exchange of power system models

71

Big Issue

• “Although we can swap our documents with each other through XML, we still haven’t a clue what they mean.”

» (“Professional XML Meta Data,” by Kal Ahmed, et al.)

• Resource Description Framework (RDF) Is W3C’s Means To Resolve This.

72

RDF Schema

• RDF Schema mechanism is a set of RDF resources (including properties) and constraints on their relationships

• Defines application-specific RDF vocabularies, for example CIM vocabulary

• RDF Schema URI unambiguously identifies a single version of a schema

[Courtesy Of Leila Schneburger]

73

Technical Approach

• RDF (Resource Description Framework) - Defines mechanism for describing resources that makes no assumptions about a particular application domain, nor defines the semantics of any application domain. The definition of the mechanism is domain neutral, yet the mechanism is suitable for describing information about any domain:– For more information: http://www.w3.org/RDF– Status: W3C Recommendation 22 February 1999

• http://www.w3.org/TR/REC-rdf-syntax/

• RDF Schema - Defines a schema specification language. Provides a basic type system for use in RDF models. It defines resources and properties such as Class and subClassOf that are used in specifying application- specific schemas:– Status: W3C Proposed Recommendation 03 March 1999

• http://www.w3.org/TR/PR-rdf-schema/

74

Technical Approach (Cont.)

• Namespaces - provide a simple method for qualifying element and attribute names used in XML documents by associating them with namespaces identified by URI references:– Status: WC3 Recommendation 14-January-1999

• http://www.w3.org/TR/REC-xml-names/

• URI (Uniform Resource Identifiers) - provide a simple and extensible means for identifying a resource:– Status: Internet RFC August 1998

• ftp://ftp.isi.edu/in-notes/rfc2396.txt

75

XML Namespaces

• Distinguish between duplicate element type and attribute names

• Collection of element type and attribute names. The namespace is identified by a URI.

• Declared with an xmlns attribute, which can associate a prefix with the namespace.

• If XML namespace declaration contains a prefix, refer to element type and attribute names in that namespace with the prefix. E.g. cim:Substation, UCTE:Substation

• If XML namespace declaration does not contain a prefix, the namespace is the default XML namespace, refer to element type names in that namespace without a prefix.

76

CIM UML=>RDF Schema=>RDBMS

UML. RDF Relational Model

Object Resource Tuple (i.e. row)Attribute or association

Property Attribute (i.e. column) or foreign key

Class Class Relation (i.e. table)

Resource Description

Tuple value

URI Key value Value Field value

[Courtesy Of Leila Schneburger]

77

Simple Network Example

SS1

SS2

400KV

110KV

12345 MW

12345 KV

12345 MW

Cable1 Cable2

SS1-SS2

T1

BB1

SS4

Cable3

78

Simple Network Connectivity Modeled with CIM Topology

SS 1

Cable2

SS 2

110KV

400KV

Cable1 CN2CN3BR1DC2 CN4

P1(MW)

CN5

BB1

T 1

TW 1

TW 2

CN7

CN6

Volts(KV)

BR3

P2(MW)

CN1

SS1-SS2

Cable3

SS 4

CN8

BDD-RSK2

T1 T2

79

Siemens 100 Bus Network Model in RDF

<?xml version="1.0" encoding="UTF-8"?><rdf:RDF xml:base="siemens" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:cim="http://iec.ch/TC57/2001/CIM-schema-cim10#"><cim:ACLineSegment rdf:ID="_6B1DD5C2CB934E86AC53FFD886E2D1B3"><cim:Naming.name>BBD-RSK2</cim:Naming.name><cim:Conductor.bch>2.79</cim:Conductor.bch><cim:Conductor.x>4.3378</cim:Conductor.x><cim:Conductor.r>0.4761</cim:Conductor.r></cim:ACLineSegment><cim:Terminal rdf:ID="_EB6085D9DF364DA78A884D4D0A571371"><cim:Naming.name>T2</cim:Naming.name><cim:Terminal.ConnectivityNode rdf:resource="#_CC312D30C85C4236948A4129AEE3B5F7"/><cim:Terminal.ConductingEquipment rdf:resource="#_6B1DD5C2CB934E86AC53FFD886E2D1B3"/></cim:Terminal><cim:Terminal rdf:ID="_7C8354E0DA247DBB3611E2E8BF8A86D"><cim:Naming.name>T1</cim:Naming.name><cim:Terminal.ConnectivityNode rdf:resource="#_D16FD63501444AECBF8157D1E4764E38"/><cim:Terminal.ConductingEquipment rdf:resource="#_6B1DD5C2CB934E86AC53FFD886E2D1B3"/></cim:Terminal><cim:ACLineSegment rdf:ID="_E83B07FE54A945539A95FD2DB2CDD4FC"><cim:Naming.name>BKR-TUR</cim:Naming.name><cim:Conductor.bch>0.39</cim:Conductor.bch><cim:Conductor.x>4.1262</cim:Conductor.x><cim:Conductor.r>1.0051</cim:Conductor.r></cim:ACLineSegment><cim:Terminal rdf:ID="_E273D9258F9D42FCA018B274BE6F5FA6"><cim:Naming.name>T2</cim:Naming.name><cim:Terminal.ConnectivityNode rdf:resource="#_576B6D171B174B8BACB7AFF7289D0434"/><cim:Terminal.ConductingEquipment rdf:resource="#_E83B07FE54A945539A95FD2DB2CDD4FC"/></cim:Terminal><cim:Terminal rdf:ID="_B23175B9692441AFBD2C581E86300550"><cim:Naming.name>T1</cim:Naming.name><cim:Terminal.ConnectivityNode rdf:resource="#_A69ED82F4EB4B65A8840CDD1E064887"/><cim:Terminal.ConductingEquipment rdf:resource="#_E83B07FE54A945539A95FD2DB2CDD4FC"/></cim:Terminal><cim:Unit rdf:ID="_5EAAD38A446E429E9905FAC32070D6FC"><cim:Naming.name>Amperes</cim:Naming.name></cim:Unit><cim:ACLineSegment rdf:ID="_329884C01F6B4DC08492F711088538D6"><cim:Naming.name>CRS-ANY1</cim:Naming.name><cim:Conductor.bch>5.03</cim:Conductor.bch><cim:Conductor.x>12.90761</cim:Conductor.x><cim:Conductor.r>1.2696</cim:Conductor.r></

Top of RDF Schema version of Siemens 100 bus model

80

ACLineSegment in RDF

Siemens 100 bus model - RDF schema

<?xml version="1.0" encoding="UTF-8"?><rdf:RDF xml:base="siemens" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:cim="http://iec.ch/TC57/2001/CIM-schema-cim10#">

<cim:ACLineSegment rdf:ID="_6B1DD5C2CB934E86AC53FFD886E2D1B3"><cim:Naming.name>BBD-RSK2</cim:Naming.name><cim:Conductor.bch>2.79</cim:Conductor.bch><cim:Conductor.x>4.3378</cim:Conductor.x><cim:Conductor.r>0.4761</cim:Conductor.r>

</cim:ACLineSegment>

<cim:Terminal rdf:ID="_EB6085D9DF364DA78A884D4D0A571371"><cim:Naming.name>T2</cim:Naming.name><cim:Terminal.ConnectivityNode rdf:resource="#_CC312D30C85C4236948A4129AEE3B5F7"/><cim:Terminal.ConductingEquipment rdf:resource="#_6B1DD5C2CB934E86AC53FFD886E2D1B3"/>

</cim:Terminal>

<cim:Terminal rdf:ID="_7C8354E0DA247DBB3611E2E8BF8A86D"><cim:Naming.name>T1</cim:Naming.name><cim:Terminal.ConnectivityNode rdf:resource="#_D16FD63501444AECBF8157D1E4764E38"/><cim:Terminal.ConductingEquipment rdf:resource="#_6B1DD5C2CB934E86AC53FFD886E2D1B3"/>

</cim:Terminal>

81

ACLineSegment in RDF

Siemens 100 bus model - RDF schema

<?xml version="1.0" encoding="UTF-8"?><rdf:RDF xml:base="siemens" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:cim="http://iec.ch/TC57/2001/CIM-schema-cim10#">

<cim:ACLineSegment rdf:ID="_6B1DD5C2CB934E86AC53FFD886E2D1B3"><cim:Naming.name>BBD-RSK2</cim:Naming.name><cim:Conductor.bch>2.79</cim:Conductor.bch><cim:Conductor.x>4.3378</cim:Conductor.x><cim:Conductor.r>0.4761</cim:Conductor.r>

</cim:ACLineSegment>

<cim:Terminal rdf:ID="_EB6085D9DF364DA78A884D4D0A571371"><cim:Naming.name>T2</cim:Naming.name><cim:Terminal.ConnectivityNode rdf:resource="#_CC312D30C85C4236948A4129AEE3B5F7"/><cim:Terminal.ConductingEquipment rdf:resource="#_6B1DD5C2CB934E86AC53FFD886E2D1B3"/>

</cim:Terminal>

<cim:Terminal rdf:ID="_7C8354E0DA247DBB3611E2E8BF8A86D"><cim:Naming.name>T1</cim:Naming.name><cim:Terminal.ConnectivityNode rdf:resource="#_D16FD63501444AECBF8157D1E4764E38"/><cim:Terminal.ConductingEquipment rdf:resource="#_6B1DD5C2CB934E86AC53FFD886E2D1B3"/>

</cim:Terminal>

82

Containment in RDFSubstation VOL with 230 KV voltage level and Bay 240W79 with Breaker CB

<cim:Substation rdf:ID="_277B2933524E43E19DAAF1D138DC62C4"><cim:Naming.name>VOL</cim:Naming.name><cim:Substation.LoadArea rdf:resource="#_BA2173878B0645A7AC8EA57B6249D537"/>

</cim:Substation>

<cim:VoltageLevel rdf:ID="_C20AF84C15E047218D75C47870C34C87"><cim:Naming.name>230K</cim:Naming.name><cim:VoltageLevel.MemberOf_Substation rdf:resource="#_277B2933524E43E19DAAF1D138DC62C4"/><cim:VoltageLevel.BaseVoltage rdf:resource="#_CF8BD1450E264399891F7FE5653D0760"/>

</cim:VoltageLevel>

<cim:BusbarSection rdf:ID="_5E0DBC09FE4D4A0DB902FEFF18AA4C30"><cim:Naming.name>VOL 2304</cim:Naming.name><cim:Equipment.MemberOf_EquipmentContainer rdf:resource="#_C20AF84C15E047218D75C47870C34C87"/>

</cim:BusbarSection>

Further down in document

Substation VOL with 230 KV voltage level and Bay 240W79 with Breaker CB

<cim:Bay rdf:ID="_7DBBA5E32C834B6AB08BB6FB07155D46"><cim:Naming.name>240W79</cim:Naming.name><cim:Bay.MemberOf_VoltageLevel rdf:resource="#_C20AF84C15E047218D75C47870C34C87"/>

</cim:Bay>

<cim:Breaker rdf:ID="_4A74B55420834E40B85F0304B6F9ADF8"><cim:Naming.name>CB</cim:Naming.name><cim:Switch.normalOpen>false</cim:Switch.normalOpen><cim:Equipment.MemberOf_EquipmentContainer rdf:resource="#_7DBBA5E32C834B6AB08BB6FB07155D46"/>

</cim:Breaker>

83

Measurement in RDF<cim:Measurement rdf:ID="_5B22599688AC4DE6B99FD8B13C1BA36F">

<cim:Naming.name>LN 1 MVAr</cim:Naming.name><cim:Measurement.MeasurementType rdf:resource="#_83D7B035901D4D2E80C040609D5ED7EC"/><cim:Measurement.Unit rdf:resource="#_61784D3DA1954750A4E09444BE5206CB"/>

</cim:Measurement>

<cim:MeasurementValue rdf:ID="_FF332A9A82FF43719AAF4E5DAFCFB9CD"><cim:Naming.aliasName>ICCP ID 24</cim:Naming.aliasName><cim:Naming.name>MVAr</cim:Naming.name><cim:MeasurementValue.MeasurementValueSource

rdf:resource="#_F0F5BA1CDE23483A8C80D20A4907A272"/><cim:MeasurementValue.MemberOf_Measurement rdf:resource="#_

5B22599688AC4DE6B99FD8B13C1BA36F"/></cim:MeasurementValue>

84

Implementation Syntax – WG13 61970

• Part 501 specifies the translation of the CIM in UML form into a machine readable format as expressed in the Extensible Markup Language (XML) representation of that schema using the Resource Description Framework (RDF) Schema specification language

– The resulting CIM RDF schema supports CIM Model Exchange specifications, as presented in IEC 61970-452 and others

• Part 552 describes the CIM XML format at a level for implementation to support the model exchange requirements in IEC 61970-452

– This standard relies upon the CIM RDF Schema of IEC 61970- 501

85

Basics: Schema from CIM

Enterprise Architect

CIM (in UML)

UMLto RDF

Transformers

CIM as XML/RDF Schema

specifies

Power System Data

Exporter

Power System Data

as XML/RDF

references

86

Key Standards Key Standards and and RelatedRelated OrganizationsOrganizations

OLE ProcessControl(OPC)

WG14DMS

Coordination

WG19

WG13EMS

WGs 10Substations

Open Application

Group

WG7 Control Centers

TC57WG9

Distribution Feeders

EPRIUCA2ProjectEPRI

CCAPIProject

W3C

CIM/61850

ebXMLObjectMgmt.Group

WG17

WG16

WG18

OASIS

UCA : User groups

MultiSpeak(NRECA)

CIM

http://www.iec.ch/home-e.htm

87

Where to Get More Information About the CIM and Related Standards• Visit CIM User Group (CIMug) Web Site

– http://cimug.ucaiug.org• Single site for gaining access to information about the CIM and related

standards– Includes all standards being developed by IEC TC57 Working Groups 13, 14, 16,

and 19• Now provide access to:

– Announcements of CIM-related activities and events – Calendar of activities – CIM electronic model in various formats – Lists of CIM-related tools and access to open source tools – Documents that are publicly available

• Draft IEC TC57 CIM standards for CIMug members – Lists of the CIMug working groups and works in progress as well as minutes of

meetings and conference calls – CIM issues lists and status of resolution – Help desk – Discussion forums – Links to other CIM-related sites

http://cimug.ucaiug.org/

88

Questions?

• Contact [email protected]• Thank you

90

How Are CIM Standards Used?

• Unlike most standards we use– Ex: ICCP/TASE.2 Communication Protocol standard– Fixed functionality, very stable, easy to test compliance, but inflexible

• CIM standards can be strictly applied and tested for compliance– Ex: CIM/XML Power system model exchange– Product interfaces can be developed and tested for compliance– Subject of several EPRI-sponsored interoperability tests for specific

interface definition

91

Example: Power Flow Network Model Exchange

CIM UML


Context

Message Syntax

Common Power System Model Profile

CIM/RDF Schema








be defined



Model Exchange Profile

Conforms to IEC 61970-501 and -552-4


92

Ex: Power Flow Network Model Exchange








be defined

CIM UML

Profile

CIM/XML RDFSchema

Concrete Message



Model Exchange Profile

Conforms to IEC 61970-552-4


93

How Are CIM Standards Used?

• Unlike most standards that we are used to– Ex: IDDP/TASE.2 Communication Protocol standard– Fixed functionality, very stable, easy to test compliance, but inflexible

• CIM standards can be strictly applied and tested for compliance– Ex: CIM/XML Power system model exchange– Product interfaces can be developed and tested for compliance– Subject of several EPRI-sponsored interoperability tests for specific

interface definition• CIM can also be used as a starter kit

– Basis for an Enterprise Semantic Model (ESM) which includes other models/semantics from other sources

– Ex: Sempra Information Model (SIM)– Interfaces are usually project-defined, so no standard tests– System interfaces are managed and tested for each project

94

GridWise Interoperability Framework

Role of CIM

95

Role of Enterprise Semantic Model

Enterprise Integration Platforms

Application Information

Process Integration

Business Intelligence

BPM/Workflow

EnterpriseSemantic

Model

EnterpriseSemantic

Model

Open Standards

ApplicationsMetadata

Bus

ines

sD

efin

ition

s

96

3) Generate Canonicals•Syntactically and semantically consistent canonical models

Semantic Consistency

1) Establish Vocabulary•Control Content•Collaborate•Identify and refine semantics

Semantic Formalization

Context Refinement

2) Develop ESM•Model using vocabulary terms•Refine context

Existing Terminologyand Metadata

Building and Using an ESM – Xtensible MD3i

97

Semantic Models and Profiles

CIM UMLPrivate UML Extensions Bridge

Other Information

Models

Context

Message Syntax

Profile

Message XML Schema

Contextual layer restricts information model• Constrain or modify data types• Cardinality (may make mandatory)• Cannot add to information model

Message syntax describes format for instance data• Can re-label elements• Change associations to define single structure for message payloads• Mappings to various technologies can be defined

98

Let’s Apply to a Utility Project - Interface Architecture

CIM UMLCIM UML Extensions

Context

Interface Syntax

Profile 1

Message XML Schema

Profile 2

CIM/RDF Schema

Profile 3

DDL

BridgeOther

Information Models

System Interface Design

Document

Profile 1Profile 1

99

Ex: Project Interaction Test

Enterprise Semantic Model• Defines all concepts needed for

Enterprise– Reused parts– New extensions for project

ESM

Profile

XML Schema

Concrete Message

Conforms to Utility ESM

Conforms to Profiles defined

for each system interaction

Conforms to WSDLs and Message

XML Schemas

Contextual layer restricts ESM• Specifies which part of ESM is used for

specific system interaction• Mandatory and optional• Restrictions• But cannot add to information model



be defined

100

Project Integration Architecture

101

Data Architecture – Model

CIM

Semantic Model

XML SchemaDB Schema

CIS OTHERREFEFENCE MODELS

SEMPRA MODEL

MESSAGES

SCHEMAS

Business Entity

Business Entity

Business Entity

102

Use of ESM to Implement a Service Oriented Architecture (SOA)

• CAISO designed a new power market system– Multi-year program that involved many vendors, new systems, as

well as numerous legacy systems• Includes EMS, Full Network Model, Outage Management, PI

Historian, Market Systems, many others• External interfaces to Market Participants included

• Integration Competency Center decided on a Service Oriented Architecture (SOA) for the integration framework– Require all new applications and systems to be “Integration

Ready” with service-enabled interfaces– Use only standard CAISO-defined services– Payloads based on the CIM– Based on Web services– CIM and Model Driven Integration (MDI) methodology used to

define information exchange

103

Interface Examples:Interface Type Example Implemented

byUtilized by Description

Information Creation

submitBid(XML) Vendor Enterprise These interfaces are for creating or modifying information within a system of record.

Information Transfer

publishCleanBidSet(XML) CAISO Vendor These interfaces are for transferring information and releasing custody.

Information Interest

receiveCleanBidSet(XML) Vendor EAI These interfaces are implemented by vendors to allow systems to receive information as it becomes available. This indicates a subscription type interest in data.

Information Sharing

getResourceInfo(XML) XML

Vendor Enterprise These interfaces are implemented by the vendors to surface information currently within custody to the enterprise.

(Slide from Stipe Fustar, KEMA)

104

System A Integration Layer

PI

BITS

MC

broadcastMarketMeterDataWS

retrieveMarketMeterData WS

broadcastMarketMeterData

WSretrieveMarketInterchange

WS

receiveMarketMeterDataWS

receiveMarketMeterDataWS

broadcastInvoiceData WS

broadcastGeneralLedgerData WS

receiveInvoiceData WS

receiveGeneralLedgerData WS

broadcastStatusInvoiceDataWS

(Slide from Stipe Fustar, KEMA)

105(Slide from Stipe Fustar, KEMA)

106(Slide from Stipe Fustar, KEMA)

107

CAISO Project Statistics22 Systems• Dispatch System• MP Report Interface• Load Forecast• Transmission Capacity

Calculator• Real Time Nodal System• Settlement and Market

Clearing• Bid Interface and Validation

7 Vendors• Siemens - Market Systems• ABB - EMS system• Areva - Settlement System• Legacy - CAISO system• Nexant - Congestion

Revenue Rights System• MCG - Interchange

Scheduling System• Potomac - Default Energy

Bids

• Default Energy Bids• Real Time Metering• Adjusted Metering• Market Participants

– Bidding– Market Results– Settlement– Outage Scheduling– Dispatch Signals

• Forward Market Nodal System

• EMS

• OASIS• Interchange Scheduling

System• Congestion Revenue Rights• Intermittent Resources• Compliance• RMR Validation• Generation Outage Scheduling• Transmission Outage

Scheduling• Market Quality System

(ATF updates)

Appr 130 integrations between the 22 systemsAppr 75 message schemasAppr 175 service definitionsAppr 450 publisher/consumer testable data transfers

between systems

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Pacificorp Use of CIM

• PacifiCorp is successfully using CIM to design both interfaces and databases– CIM was adopted in 1999 as PacifiCorp’s application integration standard – Used for both messaging and database design for new projects– Existing interfaces are reworked when the need arises

• Model Driven Integration based on the CIM viewed internally as “Best Practice”– Having a common vocabulary reduces semantic misinterpretation– Reusing messages minimizes integration costs– Minimal knowledge of internal application designs required– Xtensible MDI Workbench used for message creation, management, and

maintenance • CIM is here to stay

– CIM is standard design practice– PacifiCorp vendors are getting used to the idea– PacifiCorp’s data warehouse is based on the CIM– EMS/SCADA system (Ranger) uses a CIM-based data maintenance tool

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CIM Scorecard – Examples of CIM useBusiness Units

Application/Project

Message(s) CIM Pct of message that is CIM

Power Delivery

Substation Measurements

IntervalRead, SubstationEquipment.Measurement MeasurementList 90%

Outage Center Call Handing

TroubleCalls, TroubleReportAlerts, TroubleReportDetails, TroubleReportSummary, Customer Info, Customer Balance, Customer Account Balance

OutageManagement 80%

Retail Access Project

RegisterReadRequest, BillDeterminant, CustDrop, Enroll.DACust, EnrollmentChange, NonDACust, Reg.ESSRegister, Register.ESS, ESStatusChange, SESSESSRelationshipChange, RegisterReadResponse, CnIConsumption, DAEnrollConsumption, EnrollmentChange, NonDAEnrollConsumption, ESSStatusChange

CustomerMeterDataSet,CustomerServiceAgreement,MeasurmentList,Document, ActivityRecord, CustomerBilling, BillingDeterminant

80%

Pole Attachment System

FacilityPoint, JointUse.Agreement, JointUse.Attachment, JointUse.Notice, JointNoticeRequest, FacilityPoint

AssetList 70%

Transmission Transmission Planned Outages

PlannedOutage.Change PlannedOutageNotification 50%

Transmission Wholesale Billing System

TransmissionData, STLossData, LTLossData, Scheduling.LoadData,ConsumptionData, InvoiceData

Settlement and MarketClearing 70%

EMS SCADA WeatherData MeasurementList 100%

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CIM Scorecard Cont’dBusiness Units

Application/Project

Message(s) CIM Pct of message that is CIM

Power Supply/Generation

Availability Information System

GeoThermalPlantGeneration MeasurementList 60%

Hydro Information Website

FlowDisplay MeasurementList 100%

Generation Equipment Performance Work Management

SolutionNotification, Performance, SolutionProject, EquipmentGroupRepetitiveTasks, Inventory.StockingPlan, WorkHistoryDocument

WorkWorkHistory

90%

Commercial & Trading

CRS MarkToMarketData MarkToMarket (Not in CIM) 80%

California ISO interface

EDI810 Settlement 50%

Corporate Giving Campaign

EmployeeDetails, ContributionPayrollDetails Employee (erpPerson) 70%

Sarbanes Oxley Audit

ChangeAuditReport ChangeAudit (Not in CIM) 90%

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Addressing Objections to the Use of the CIM Standards• Claim: CIM is not stable

– Fact: The CIM UML model is evolving as new applications are identified– Fact: Only small part of CIM information model is used for a given interface, so change of information model

unlikely to affect specific interface.– Solution: Version control - tie interface designs to project specifications, not directly to standard

• CIM is to complex too learn and contains many parts I do not need– Fact: The overall CIM UML model is large and complex– Reality: A typical interface requires only very small subset of information model

• CIM creates too much overhead in message content– Fact: Only instantiated concrete class/attributes are actually sent in a message instance– Reality: Message payload is no larger than any XML formatted message

• I don’t want to add in an extra step of converting to CIM for system integration– Fact: There is an extra step of mapping to CIM for one connection– Reality: Consequence of not mapping to a common language is solution that does not scale:

• n(n-1) instead of 2n connection mappings• I can’t expect my vendors to adopt the CIM model for their interface

– Fact: Only a few parts of the CIM need to be “Known” by the vendor– Reality: Approach is to specify the mappings to a common language (CIM) as part of the interface contract

• I don’t want to convert all my metadata to the CIM– Fact: CIM is a starter kit– Reality: Use CIM as appropriate for building your own ESM – far better than starting from scratch

• CIM does not contain everything I need or in the form I need for my interfaces– Fact: CIM UML is extensible– Reality: Many utilities still use the CIM as a starting point, using namespaces to maintain traceability

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CIM Usage• Many EMS vendors support power system model exchange using CIM/RDF/XML,

some with CIM-based databases behind the scenes• EPRI has sponsored 12 interoperability tests for transmission model exchange and

service validation and more recently for planning and distribution• Utilities have implemented CIM-based integration using EAI technologies

– Utilities have used the CIM as the basis for developing common messages for integration• Asset and work management vendors as well as GIS application vendors are

supporting CIM/XSD standards• AMI (Smart Meter) projects use IEC 61968 Part 9 for meter related information

exchange• CIM has been extended into the power market, planning, and dynamic model

exchange• CIM provides a foundation for Service-Oriented Architecture (SOA) and Web service

implementations• Vendors have developed tools to build CIM-based information exchange messaging,

GID interfaces, and repository applications that can process CIM-aware data• MultiSpeak is converting to CIM-based UML models and XML• ENTSO_E is converting power model exchanges and day-ahead forecasts for

planning/operational applications to CIM based format– Second IOP planned for July 2010 (first was UCTE IOP in March 2009)

• Many Smart Grid-related activities based on CIM– Separate presentation during week

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CIM Acceptance

• In use at dozens of utilities throughout world– In North America, used at TSOs, RTO/ISOs and NERC as well– In Europe now being adopted by UCTE and TOs

• 50+ applications based on CIM• 40+ suppliers sell application/products based on CIM

– See CIM Reference List for Details• Endorsed by other standards organizations

– Multispeak, Zigbee, HAN, UCTE, etc. • Foundation for information exchange between utilities and/or other

external organizations• Foundation for Model-Driven Integration (MDI) architecture based on

Enterprise Information Model (EIM) within an enterprise• Key building block in Smart Grid to achieve interoperability• CIM User Group to deal with questions and issues arising from

increased use

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Concluding Remarks

• Bottom line: CIM standards are different and much more powerful– Can be applied in many ways– Support many types of functions/applications through

combination of reuse and extension– Architecture supports future, unknown applications

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Questions?

• Contact [email protected]• Thank you