NOTICE DATE:  May 22, 2013

NOTICE TYPE:  M-B051313-02 SCR

SHORT DESCRIPTION:  Implementation details of SCR773

INTENDED AUDIENCE:  ERCOT Market Participants

DAY AFFECTED:  May 23, 2013

LONG DESCRIPTION:  On May 23, 2013, ERCOT will implement System Change Request (SCR) 773, Addition of Regulation Feedback to Generation to be Dispatched Calculation, which was approved by the ERCOT Board on March 19, 2013.  SCR773 updates the formula used to calculate the amount of generation to be dispatched that takes into account a configurable quantity for Regulation Service that has been deployed as shown below:

  1. Add the K4 configurable factor together with the rolling average of regulation deployed to the following equations.

Generation to be Dispatched = Total Gen +K1*10*System Load Frequency Bias + K2*[(net non-conforming Load) – (net filtered non-conforming Load)] + K3*5*PLRR + K4*Regulation Deployed.

  1. Ability to use the rolling average of Regulation Service deployed over X minutes, where value X can be configured.

Note:  The parameter “X” and K4 will be set by ERCOT and reported to the Performance, Disturbance, Compliance Working Group (PDCWG) on implementation.

ADDITIONAL INFORMATION:  SCR773 and associated documents can be found on the ERCOT website, under Market Rules, at http://www.ercot.com/mktrules/issues/scr/750-774/773/index.

Information on upcoming releases can be found on the ERCOT Multi Year Project Priority List (PPL) at http://www.ercot.com/services/projects/.

 

CONTACT:  If you have any questions, please contact your ERCOT Account Manager. You may also call the general ERCOT Client Services phone number at (512) 248-3900 or contact ERCOT Client Services via email at [log in to unmask].

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