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SCR760

Summary

Title Recommended Changes Needed for Information Model Manager and Topology Processor for Planning Models
Next Group
Next Step
Status Approved on 03/22/2011

Action

Date Gov Body Action Taken Next steps
03/22/2011 BOARD Approved
03/03/2011 TAC Recommended for Approval ERCOT Board Consideration
02/03/2011 TAC Deferred/Tabled TAC Consideration
01/06/2011 TAC Deferred/Tabled TAC Consideration
12/06/2010 TAC Deferred/Tabled TAC Consideration
11/18/2010 PRS Recommended for Approval TAC Consideration
11/11/2010 ROS Recommended for Approval

Voting Record

Date Gov Body Motion Result
03/22/2011 BOARD To approve SCR760 as recommended by TAC in the 3/3/11 TAC Report Passed
03/03/2011 TAC To recommend approval of SCR760 as amended by the 1/24/11 ROS comments with a priority of Critical and a rank of 3.5 Passed
02/03/2011 TAC To table SCR760 and to direct ERCOT to complete an impact assessment based on the 1/24/11 ROS comments Passed
01/06/2011 TAC To table SCR760 for one month. Passed
12/06/2010 TAC To table SCR760 for one month Passed
11/18/2010 PRS To recommend a priority of Critical and to endorse and forward the 11/11/10 ROS Report for SCR760 to TAC Passed
11/11/2010 ROS Voted to grant Urgent status to SCR760 and to recommend approval of SCR760 as submitted. Passed

Background

Status: Approved
Date Posted: Nov 4, 2010
Sponsor: Wesley Woitt on behalf of the SSWG
Urgent: Yes
Sections: Changes to the Information Model Manager and Topology Processor
Description: This System Change Request (SCR) proposes changes to the Information Model Manager and Topology Processor to fix a number of deficiencies with the proposed Annual Planning Model creation process.
Reason: ERCOT decided that system modeling information feeding downstream applications, market apps, operations systems, and planning models would reside in one database, which is the Information Model Manager. The Topology Processor is a piece of software that takes the Information Model Manager database (a breaker/switch model) and modifies the data into a planning model (a bus/branch model). This model will then be input into the Model On Demand (MOD) software which will be used to create future planning cases. Since 2009, the SSWG began a detailed review of the Topology Processor output and has noted a number of deficiencies in the Information Model Manager and/or Topology Processor. These deficiencies have to be corrected to produce usable cases for planning analyses; therefore, rather than make these corrections on the back end of the process through MOD each time a case is created, we strongly urge the adoption of the changes suggested in this SCR. The deficiencies with the current output of the Topology Processor are listed in a ranked order of importance to the SSWG. Potential resolutions have been offered; however, further discussion with ERCOT and its vendors will be needed before finalizing.

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