1. PTD Energy Management & Information Systems FERC TC: Information Technology for Reliability & Markets ISO-RTO Standards Collaborative July 14, 2004 J. Waight

2. Siemens Power Transmission & Distribution, Inc. Energy Management & Information Systems Division 07-14-2004 2 Security Constrained Unit Commitment Objectives: Specify Interfaces to Security Constrained Unit Commitment (SCUC) Continuation of EPRI CME project 1 st Project to demonstrate methods of ISO-RTO Standards Collaborative Desired Result is that SCUC may be considered as a black box with standard input and output interfaces Desired Result is that ISO-RTOs can procure SCUC as a component, from any vendor, and run multiple SCUC in parallel ISO-RTOs can integrate SCUC into a Market Operations System using a standard interface, at reduced cost

3. Siemens Power Transmission & Distribution, Inc. Energy Management & Information Systems Division 07-14-2004 3 Process for Creation of Standard Interfaces Each Vendor contributed its SCUC requirements Data Input Requirements and Descriptions Data Output Provided by SCUC and Description ISO-RTOs review Input/Output requirements Create a profile of data required to support features of Market Commonality due to SMD Review of existing Common Information Model IEC standard 61970 part 301 Search for existing models that can be reused Extension of CIM to add Market Features Workshop approach Development of a set of tools to automate creation of message schemas Use of tools to create message schemas

4. Siemens Power Transmission & Distribution, Inc. Energy Management & Information Systems Division 07-14-2004 4 Tools for Creation of Standard Interfaces Model Driven Architecture Platform Independent Model maintained in UML Rational Rose Intermediate Model RDF/Schema Platform Specific Model W3C XML Schema XPETAL as tool for transformation Public Domain

5. Siemens Power Transmission & Distribution, Inc. Energy Management & Information Systems Division 07-14-2004 5 Message Framework for SCUC Input Messages Market Input Message (Bids) Generation Bid Load Bid Transaction Bid Network Model Input NERC CPSM profile Standing Input Message RTO Product Definition Market Definition Market Participant Registration System Requirement Load Forecast Generation Initial Conditions Security Analysis Input Message Outages Contingencies Limits etc Output Message Schedules Prices Errors & Warnings Solution Notes Control Messages Schemas Fetch Execute

6. Siemens Power Transmission & Distribution, Inc. Energy Management & Information Systems Division 07-14-2004 6 Results to date First Project to Demonstrate ISO-RTO Standards Collaborative Three workshops attended by ISO-RTOs, Vendors, and Consultants Repeatable Process, Methodology, and Tools for Developing Interface Standards Model Extensions to the Common Information Model (CIM) to support SCUC Development of Message Sequence Diagram Development of XML schemas to define messages Planning for pilot project to validate schemas Achieved in three month schedule

7. Siemens Power Transmission & Distribution, Inc. Energy Management & Information Systems Division 07-14-2004 7 Questions ???

8. Siemens Power Transmission & Distribution, Inc. Energy Management & Information Systems Division 07-14-2004 8 Backup: Message Sequence Diagram

9. Siemens Power Transmission & Distribution, Inc. Energy Management & Information Systems Division 07-14-2004 9 Backup: Model Driven Architecture Cascaded Pattern