Operations Model Follow-up. February 18, 2015

Transcription

1 Operations Model Follow-up February 18, 2015

2 Key Takeaways Follow-up for questions raised at January Operations Models presentation 2

3 Network Model RTLODFC Real-Time Line Outage Distribution Factor Calculator Backup to the RTCA Does not require a State Estimator solution to run Alstom EMP version 2.6, RTLODFC is a standard product MISO has customized Integrated NETSENS 3

4 Network Model How is sub-transmission distinguished from transmission in the Network Model? There is no flag in the MISO Network Model to distinguish between sub-transmission and transmission This designation is different within each area MISO monitors all equipment within the Bulk Electric System definition MISO monitors equipment that has been turned over to MISO function control (Appendix H designation) for overloads and redispatch 4

5 Commercial Model SSR (System Support Resource) information part of Attachment B generator registration? No. 5

6 DART Model State Estimator Powerflow solution Losses Calculation RTCA Contingent Solution Constraints identified Clogger Calculates generator shift factors for constraint Assigns benefit or penalty to the constraint DART Includes constraint in next solution Unit Dispatch System (UDS) optimizes dispatch Assigns financial component 6

7 Current case FTR/ARR Model Current quarterly network model used for base of monthly auctions all incoming equipment doublemodeled as necessary FTRs are settled against Day-Ahead prices. Important to utilize the same model base Modify base each month by applying planned outages to more accurately reflect system conditions Granularity of monthly auctions ensure stakeholders are not restricted for months outside of the outage period 7

8 Future Cases FTR/ARR Model Yearly cases built in March using MOD projects submitted by TO. Assumptions made on system conditions could impact FTR funding shortfalls where MISO can only fund a portion of the expected FTR value. 8

9 MOD Basecase Daily Offline Outage Coordination Studies Basecase plus SDX outages, forecast, dispatch What is the Generation Dispatch file? Merit order list of how to move generation Contains generator type and historical position MISO created 9

10 MOD Basecase - TSP Transmission Security Planning (TSP) Models Primary Function Provide Day-Ahead and Forward Reliability Assessment Commitment (FRAC) process with constraints necessary to produce a reasonable unit commitment. Build a next day model and post analysis results (S Case) Determine and post Reserve requirements MOD Basecase downloaded quarterly (same as Network Model) Unit additions for any planning vs operating model discrepancies Unit deletions by request only. MOD updates to be submitted as well Limit and impedance updates per WebTool submittals (done daily) Idevs created to split busses to simulate key breaker outages All units turned off 10

11 MOD Basecase - IDC Additional information requested on Pseudo BAs removed Not applicable for IDC case builds Used for AFC models Modification zone number changed to match control area number per IDC requirements. 11

12 Available Flowgate Capability (AFC) Models Begins with Seasonal IDC model (example Nov 2014) Build 5 Seasonal AFC Models each season Hourly/Daily models current IDC seasonal model Updated monthly based on IDC changes Winter0 6 months out Summer0 12 months out Winter 18 months out Summer 24 months out Model base additions Apply Transmission Service Requests (TSRs), Outages, and Load Forecast to calculate AFC Block HVDC tie and use pseudo BA/pseudo generator to capture TSRs 12

13 AFC time horizons Operating AFC Models hourly/daily model (hours 1-48) Planning I hourly/daily model (hour 49-day 7) Planning II hourly/daily model (day 8-31) Study/monthly Winter0/Summer0/Winter/Summer (month 2-36) 13