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QMWG Report to WMS

QMWG Report to WMS. S. Looney September 11, 2013. Assignments to QMWG. Concern of ERCOT regarding availability of SASM offers – Requested QMWG members to bring suggestions to October meeting. NPRR535, Resource Status Startup – Continues to be tabled by the NPRR sponsor.

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QMWG Report to WMS

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  1. QMWG Report to WMS S. Looney September 11, 2013

  2. Assignments to QMWG • Concern of ERCOT regarding availability of SASM offers – Requested QMWG members to bring suggestions to October meeting. • NPRR535, Resource Status Startup – Continues to be tabled by the NPRR sponsor. • Review of DC-Tie Operations and Costs – Assignment transferred to ERCOT through a workshop format. • Regulation Bias, SCR773/NPRR486 – Working this in conjunction with PDCWG • Reactive Testing Concerns -- Changes to the reactive test form in NDCRC are currently in the drafting stage.  Once a finalized mark-up of intended changes to the form will be presented to QMWG for final edits.  Expected mark-up completion date is 10-1-13 and expected date of implementation is early 2nd quarter 2014. 

  3. Regulation Bias – SCR773/NPRR486 • Results of August 26, 2013 joint meeting with PDCWG • Does SCR 773 address the problem identified in NPRR 486? There is improvement, but the problem has not yet been solved. • What is market objective of NPRR 486? To minimize the un-priced energy between SCED runs. • What is the reliability objective of NPRR 486? To minimize the regulation deployment bias and to maintain the appropriate amount of operating reserves held in reserve. Decrease Regulation exhaustion rate(normalized across different years). • Has the reliability objective been met? Partial improvement has been shown. • What are next steps for reliability concerns? Evaluate metrics/targets for reporting to ROS/WMS. More root cause analysis during chronic regulation bias intervals.

  4. NPRR 486/ SCR 773 • Evaluation and changes going forward • Purely Integrated feedback was discussed • Suggested that ERCOT evaluate using a PID (Proportional-Integral-Derivative) type controller scheme • Data will be gathered for review at September meeting • Generation deviation • Regulation bias • PID scheme & modeled results if possible • Regulation zero crossings

  5. QMWG – Relevant Workshops/Future Meetings • Workshop for SCR774, Enhancement to Outage Scheduler and Reports – September 20 • Evaluation of Regulation Bias issue, PDCWG Open Meeting – September 26 • QMWG Meeting – October 1

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