1. © ABB Ltd. - 1 - ABB Experience Neela Mayur CIM Users’ Group Meeting June 12, 2008

2. © ABB Inc. - 2 - Agenda ABB participation in CIM Development Definition of CIM ABB Network Manager CIM Architecture CIM support from ABB products ABB customer experiences Technology Recommendations Conclusions

3. © ABB Inc. - 3 - ABB participation in CIM Development ABB was involved from Day 1 when EPRI started the CIM initiative in 1994 In 2001, ABB delivered a CIM based data engineering system For more than 12 years, Lars – Ola Osterlund from ABB has been contributing to CIM model standardization within IEC ABB has actively participated in the inter op tests since 2000

4. © ABB Inc. - 4 - What The CIM Is And Is Not What the CIM is CIM is an interface definition An information model including power system connectivity for data exchange A suite of specifications from IEC TC57 An electronic model in UML What the CIM is not Sometimes CIM is referred as a database This is not correct It is possible to use CIM as a database schema but this has consequences Performance impact because of inheritance in CIM vulnerability to changes in the CIM standard

5. © ABB Inc. - 5 - Evolution of CIM CIM Changes And Will Continue To Do So Support for new functions is continuously added DMS interfaces added by WG14 Energy market interfaces added by WG16 CIM for planning interfaces added by WG13 Utilities having projects using the CIM where results are feed back to IEC ERCOT ELIA Discovered issues and errors require changes Interoperability tests Utilities making EAI projects using the CIM

6. © ABB Inc. - 6 - ABB Network Manager (EMS) CIM Architecture Data Engineering/ Modeler tool CIMXML Model Import CIMXML Model Data CIMXML Model Export Online System Graphics Generation Oracle CIMXML Real time Export CIMXML Real time Data CIMXML Real time Import DAIS/DA Server DAIS/A&E Server Run Time RTDB DAIS/DA API DAIS/A&E API

7. © ABB Inc. - 7 - CIM support from ABB products Data Engineering Tool for EMS CAISO specified support for CIM in 1999 Main Objective Exchange network model in a standard format to improve efficiency Auto generated one-line diagrams ABB delivered DE tool in 2001 to meet the objectives Based on ESRI GIS system Rich in Functionality (improved over last 6 years) Auto generation of substation diagrams Import CIM xml file Graphical compare of new input with existing data Export CIM xml file Real time State Estimator data exchange in CIM format between EMS and Market system Multi model maintenance

8. © ABB Inc. - 8 - CIM support from ABB products Data Engineering Tool for EMS Full model export/import Load Flow on imported models Graphics generation from imported models Incremental model export/import On going maintenance to support the latest changes to the standard Model data support real time data exchange DAIS/DA ICCP SE results Using MOM ABB’s Market Applications support model initialization using CIM xml ABB OMS Applications support model initialization using distribution CIM xml

9. © ABB Inc. - 9 - ABB customer Experience CAISO – Dual Model Maintenance (one for EMS and one for Market) Exchange model between EMS and Market Applications Exchange real time State Estimator results in CIM format using MOM NYISO – Exchange model between EMS and Market Applications Austin Energy – Model exchange ERCOT KCPL – Condition Based Maintenance Tri State – Import External Model from WECC, WAPA ERCOT – Initialize market Applications using CIM Com ED – Distribution CIM usage- extract data from Small World GIS and exported in CIM format to be ABB DMS applications Serious performance problem STANET – Exchange Data with Swedish Grid ELIA – Customer Developed CIM exporter for internal Application usage CENACE – Internal use PacificCorp – Internal use

10. © ABB Inc. - 10 - CIM is PacifiCorp’s Integration Strategy 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 CIM-based integration viewed internally as “Best Practice” Having a common vocabulary reduces semantic misinterpretation Reusing messages minimizes integration costs Minimal knowledge of internal application designs required CIM is here to stay CIM model-driven integration is standard design practice PacifiCorp vendors are getting used to the idea

11. © ABB Inc. - 11 - Technologies Used Importer XSLT with existing standard importer Custom written translator Exporter Oracle views and report generator Custom written translator

12. © ABB Inc. - 12 - Experiences with different Technologies XSLT Pros Leverage current functionality of CSV import Powerful and high productivity Easy to adapt to changing CIM standard Cons Scalability and performance issues for complex transformations For complex transformations incremental import is difficult Oracle views and report generator Pros Powerful and high productivity Easy to adapt to changing CIM standard Good scalability and performance

13. © ABB Inc. - 13 - Experiences with different Technologies Custom applications Pros Easier (but not for granted) to get scalability and good performance Cons High ongoing maintenance

14. © ABB Inc. - 14 - Recommendations Put complex transformations in RDBMS Gives good performance and scalability It is efficient to make complex transformations in RDBMS Easy to support incremental CIM XML data exchange Put simple transformations in XSLT Easiest way to process XML files A single XML file scan in XSLT is efficient, no scalability or performance penalty

15. © ABB Inc. - 15 - Conclusions Network Manager data model is very close to the CIM Makes transformations from CIM to Network Manager simple Plan to change Network Manager Data Model where the difference in CIM and ABB model is significant