Model Building and Maintenance as a Hosted Service. Farrokh Albuyeh, Ph.D. Open Access Technology International June 2006

Transcription

1 Model Building and Maintenance as a Hosted Service Farrokh Albuyeh, Ph.D. Open Access Technology International June 2006

2 Model Building and Maintenance Problem: Many Models Inconsistent Models Internal and External Data Sources ( Internal, External, CAs, RAs, MPs.) Many Internal and External Users ( MPs, RAs, Regulatory Agencies, ) Different Application Requirements Different User Requirements Continuous Maintenance Requirement Labor Intensive, Expensive

3 Various Models at an ISO/RTO EMS Models- Node Oriented, Typically Vendor-Specific, FTR Models- Bus Oriented, Reflects Future Equipment Changes in the Time Frames of FTR Auctions, Use Equivalenced Areas, Commercial Models- Includes Information on Market Participants, Asset Owners, Gen. and Load Resources, Meter Agents, Commercial Nodes, Pricing Nodes. It is Integrated With EMS Models, and Includes Future Equipment Security Assessment Models- Bus Oriented Operational Planning Models Used to Assess the Short Term Security of the System, may Use Update from NERC SDX, Outage Coordination Models- Same as Above, Includes Future Equipment,

4 Various Models at an ISO/RTO- Contd. Monthly AFC Models- Bus Oriented, Used to Evaluate Mid-Range Transmission Service Requests, Short Term AFC Models- Node Oriented Based on EMS Models, Used to Evaluate Short Term Transmission Service Requests, Long Range Planning Models- Bus Oriented, Yearly and Seasonal Models, Generation Interconnection Models- Bus Oriented, Used to Evaluate Generation Interconnections, NERC IDC Model- Bus Oriented, Used by the NERC IDC for TLR Analysis And Actions, NERC Multi-Regional Modeling Working Group (MMWG) Models- Bus Oriented, Prepared Annually for All NERC Regions Other

5 Inconsistencies Various Levels of Detail Across Models, Voltage Levels, and Areas Various Time Spans Depending on Application ( Real-time To Years) Different Naming Conventions Boundaries Inconsistencies in the Equipment Modeled, Network Configuration, Equipment Ratings, Maintained and Used by Various Departments Independently For Different Business Functions Inputs From Internal, Control Areas, Reliability Authorities, Market Participants, etc.

6 Multiple Users Internal- Operations, Operations Planning, Planning External- Reliability and Planning Entities, Reliability Coordinators, Balancing Authorities, Planning Authorities, Transmission Operators, Transmission Service Providers, and Market Participants

7 Requirements Standardize Model Development Activities Use a Centralized Database for One Source of Data For All Models Use Effective Dating To Incorporate Time Dependencies of Various Models Coordination of Modeling Data Between Groups Eliminate Inconsistencies Between Various Models Create Models on Demand By Region, and for Specific Application Service Data Requests From Various Stakeholders and Other Entities Provide Easy Access Though the Internet Importable And Exportable in Parts or in Whole Capability to Add Real Time Data to the Model Via ICCP Data Import and Export in CIM/XML, PSS/E, IEEE, And Other Formats

8 Other Requirements Large Model Sizes K Buses, K Lines and X-formers, >1M Nodes, >10K Generators Availability Greater Than 95%, Measured on a Short Time Period (Month) Model Validation Tools Produce model on demand, in specific formats, for various applications, and for individual clients Use common naming conventions, or provide for convenient mapping of equipment names across models Reconcile assumptions between different models Allow for user and client inputs of additions of new equipment and modifications to existing models

9 Solution Web-Based Model Building and Maintenance Service To: Provide A Centralized Modeling Service for Internal And External Clients Import and Manage Model Data From Various Entities Merge and Consolidate Imported Data With Existing Models Validate Models Against Power Flow, Dynamic Analysis, And Short Circuit Applications Perform Benchmarking Analysis Against Previously Executed Cases Document Models Create and Export User and Applications-specific Models

10 Model Building as a Service Low Outlay of Capital and Human Resources Low Operating Expense Little or no IT Burden Low Communication Costs High Redundancy at Processing, Database, Applications, and Communications Levels Cater to Large Numbers Internal and External Users 24X7 Helpdesk Support

11 Architecture External Clients Internal Users Model Building Admin Internet Member Model Import Data Validation Consistency Checking Load Scaling Interchange Scheduling Generation Scheduling Member Model Export Member DB Working Model DB Member Model Import Transfer External Data Model Import Transfer Model Merge Data Validation Consistency Checking Load Scaling Interchange Scheduling Generation Scheduling Outage Scheduling Topology Processor Transfer Distribution Factor Calculator Report Generator Member Model Export Transfer Released Model Archiver Replicator Model Validation and Benchmarking Power Flow Dynamic Analysis Short Circuit Analysis External DB Released Model DB External Data Model Import OASIS TSR Data Import NERC SDX Import External Model Export External Systems SDX, OASIS,

12 Other Features Logging And Time Stamping Member Data Repository Segregated By Member, Each Member Can Directly Input And Edit Own Data Effective Dating Archiving Logging User Security Alarming Web Based User Interface Messaging