1 / 18

February 14, 2013 Reliability Committee Meeting

February 14, 2013 Reliability Committee Meeting. Steve Weaver. System Operations. In-Day Reserves & Supplemental Procurement. Background.

chill
Download Presentation

February 14, 2013 Reliability Committee Meeting

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. February 14, 2013 Reliability Committee Meeting Steve Weaver System Operations In-Day Reserves & Supplemental Procurement

  2. Background • In accordance with OP-8, ISO maintains in real-time a total Ten Minute Reserves (TMR) at least equal to 100% of the largest single source contingency in New England and Thirty Minute Operating Reserves (TMOR) equal to 50% of the second largest contingency • ISO adjusts the allocation of TMR to compensate for generator non-performance • In accordance with OP-8, the ISO can also increase the TMOR requirement for an incremental amount of replacement reserves based upon system conditions • ISO has not carried a real-time replacement reserves since June 1, 2006

  3. Background • Operating the system to only meet minimum operating reserve requirements requires emergency actions on peak to account for uncertainties in – • Instantaneous peak load • Load forecast error • Generator contingencies and reductions • Gas resource unavailability due to fuel limitations • ISO operations commits supplemental capacity in the RAA when necessary to preclude excessive reliance on emergency actions to maintain system reliability

  4. Proposal: Replacement Reserves • Starting with the Winter of 2013/2014, the ISO will operate the system to meet an incremental replacement reserve requirement (as part of total operating reserve requirement) • Replacement reserves can be met by resources providing ten or thirty minute capability • The incremental replacement reserve requirement would be included in the Forward Reserve Market, Day-Ahead Market, RAA/SCRA and in real-time with a discrete RCPF • Having an increased reserve requirement will reduce the need to use supplemental commitments under normal operating conditions • The system will be committed to meet load plus the reserve requirements • Resources in real-time will be redispatched to meet the total operating reserve requirement ensuring capability is available to manage uncertainties that may materialize within the operating day

  5. Proposal: Replacement Reserves (cont.) • Operations would not take emergency actions to maintain replacement reserves; rather only using these actions to maintain the minimum operating reserve requirement • Operations will continue to commit supplement capacity in addition to replacement reserves in order to maintain system reliability

  6. Operating Reserve Requirement • In many hours the system has available reserves in excess of the total operating reserve requirement

  7. Operating Reserve Requirement and Replacement Reserves • Including replacement reserves in the total operating reserve requirement will not necessarily result in additional commitment • The commitment process results in available reserves being in excess of the total operating reserve requirement in many hours

  8. Available Reserves above RequirementAll Hours: 2009-2012

  9. Available Reserves above Requirement Peak Hours: 2009-2012

  10. Shortage of Replacement Reserves • When there is a shortage of the replacement reserves (but not the minimum operating reserve requirement), emergency actions are not taken to meet the replacement reserves

  11. Shortage of Minimum Operating Reserve Requirement • When there is a shortage of available reserves against the minimum operating reserve requirement, the ISO will take emergency actions under OP4 • The ISO will not use emergency actions to explicitly restore replacement reserves

  12. Immediate Next Steps • The ISO is evaluating the expected amount of replacement reserves under normal system conditions • This will be discussed further at a future Reliability Committee (March/April) meetings • The ISO is planning to perform a high-level cost impact analysis of the increase in the operating reserve requirement in the Forward Reserve Market and Day-Ahead and Real-Time markets for discussion at a future Markets Committee (April/May) • The ISO is evaluating the TMOR Reserve Constraint Penalty Factor (RCPF) in the context of the use of replacement reserves to determine if a tiered RCPF (i.e., TMOR demand curve) is appropriate • This will be discussed at the March Markets Committee meeting

  13. Immediate Next Steps (cont.) • The ISO is proposing changes to the Forward Reserve Market penalties to ensure appropriate incentives for resources to be available and respond when dispatched • This was discussed at the February Markets Committee meeting and will be discussed at future Markets Committee meetings

  14. Longer-term Actions • The ISO is evaluating the development of additional reserve product(s) • The additional reserve product(s) will not be available for Winter-2013/14 • The ISO is evaluating the stakeholder and implementation schedule

  15. Related Market & Operational Changes

  16. Related Market & Operational Changes

  17. Related Market & Operational Changes

More Related