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10/27/09 – SEM Update. Woody Rickerson Manager ERCOT Network Modeling. History ERCOT Network Operations Model. 2000 – June 2009. June 2009 – Sep 2009. Sep 2009 –Nodal Go-live. Nodal Go-live. SEM. Nodal Model. Nodal Model. Nodal Model. NOMCRs. SRs. NOMCRs. ERCOT. NOMCRs.
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10/27/09 – SEM Update Woody Rickerson Manager ERCOT Network Modeling
History ERCOT Network Operations Model 2000 – June 2009 June 2009 – Sep 2009 Sep 2009 –Nodal Go-live Nodal Go-live SEM Nodal Model Nodal Model Nodal Model NOMCRs SRs NOMCRs ERCOT NOMCRs Zonal Model Zonal Model ERCOT ERCOT SRs SRs ERCOT Zonal Model TSPs TSPs TSPs TSPs TODAY
SEM Issues • Owner/Operator Difficulty • Process to expedite ownership changes • ERCOT has changed ownership of over 620 substations and 9000 pieces of equipment • Nodal-Zonal conversion has slowed validation efforts • ERCOT-required data in TSP ownership • Access to NMMS
TSP Model Change Activity during SEM Over 60,000 data modifications have been made since the start of SEM Over 24,000,000 data attributes in the model
NDSWG Coordination • Bi-monthly Webex meetings • One-off special meetings for outstanding issues • Issue tracking worksheet • Modeling issues • Modeling guide revisions • Development of Modeling Templates • NOMCRhelp@ercot.com for immediate problems