N-1Application - Directory 5 filing
11 passages
C. Description of Directory #5 and Justification for Revisions In this application, NPCC requests the NSEB to approve revisions to the Regional Reliability Criteria contained in Directory #5 Reserve , effective October 15, 2025. Directory...
AI summary NPCC requests approval from the NSEB to revise Directory #5 Reserve , aligning it with NERC Standards and incorporating industry feedback. The revisions were reviewed by the TFCO and RCC, and obtained Full Member approval on October 15, 2025.
1.0 Introduction The simultaneous activation of ten-minute reserve (SAR) is a program in which two or more Balancing Authorities agree to individually maintain but jointly activate ten-minute reserve to facilitate a more rapid recovery fro...
AI summary The ten-minute reserve (SAR) program allows Balancing Authorities to maintain and jointly activate reserve capacity for rapid recovery from NPCC reportable events. Participation requires approval from TFCO and forming an electrically contiguous area. SAR is not a Reserve Sharing Group under NERC, and contingent Balancing Authorities are responsible for DCS recovery requirements.
3.0 Radial Source Contingencies with Counter flow Transactions Coincident with energy Transactions delivered out of the Balancing Authority on radial source tie line s, countervailing Transactions may be scheduled simultaneously into the B...
AI summary This section discusses radial source contingencies involving counter flow transactions on tie lines, highlighting the potential for large individual counter flow transactions and the methodology for allocating SAR assistance. It also addresses the challenges of reserve requirements when energy is delivered to multiple balancing authorities and the use of negative assistance shares in such scenarios.
For non-SAR events: If SAR is not requested, all E-tag(s) associated with the energy wheeled through BA1 and into BA2 will be curtailed on a mutually agreed upon start time and Ramp duration by the affected BAs. PUBLIC Page 19 of 44
AI summary For non-SAR events, E-tags associated with energy wheeled through BA1 into BA2 will be curtailed on a mutually agreed start time and Ramp duration by the affected BAs.
4.2 Modification to the SAR Procedure The SAR procedure is modified to allocate portions of the total delivery to Balancing Authorities in addition to the directly connected Balancing Authority during an ordinary simultaneous activation of...
AI summary The SAR procedure is modified to allocate energy to Balancing Authorities during a contingency, with shares determined based on mutual assistance principles. When a tie line trips, the directly connected Balancing Authority may initiate the SAR process, and energy is shared according to pre-defined rules. This ensures that all Balancing Authorities contribute to and receive assistance for their portion of the contingency.
Initial Shares – NYISO and PJM are initially assigned one-half of their respective purchase from and delivery to HQ-TE. Consequently, under the ordinary SAR rules, they would be 'seeking' assistance for both flows into and out of Quebec. T...
AI summary The text discusses the allocation of assistance shares among NYISO, PJM, and other participants during a contingency scenario involving energy flows into and out of Quebec. It outlines the first and second pass allocations and how they affect the net generation picked up by Balancing Authorities after the SAR procedure is canceled and ACE is restored to zero.
3.0 Action to Mitigate Ten-Minute Reserve Shortages 3.1 Actions When Becoming Deficient in Ten-Minute Reserve To minimize the magnitude and duration of a Ten-Minute Reserve deficiency, a Balancing Authority may implement any or all of the...
AI summary This section outlines actions a Balancing Authority can take to address deficiencies in ten-minute reserve and synchronized reserve. Measures include committing offline resources, recalling exports, obtaining external resources, and managing interruptible loads to ensure reliability and compliance with reserve requirements.
For non-SAR events: If SAR is not requested, all E-tag(s) associated with the energy wheeled through BA1 and into BA2 will be curtailed on a mutually agreed upon start time and Ramp duration by the affected BAs.
AI summary For non-SAR events, if SAR is not requested, all E-tag(s) associated with energy wheeled through BA1 into BA2 will be curtailed on a mutually agreed start time and Ramp duration by the affected BAs.
▪ Post contingency : BA1 contacts SAR Coordinator to activate SAR. The SAR Coordinator issues shares. The E-tag(s) associated with the energy sinking in BA1 is curtailed immediately over a zero minute Ramp due to the flow path being remove...
AI summary In the event of a post-contingency scenario, BA1 contacts the SAR Coordinator to activate SAR, leading to the immediate curtailment of E-tags associated with energy sinking in BA1. E-tags for energy wheeled through BA1 and sinking in BA2 are curtailed after SAR termination using a ten-minute ramp.
IESO NE NE PJM PJM NY NY Tot Tot Time Sch IESO Sch ACE Sch ACE Sch ACE Sch ACE Pre-contingency 0 0 +400 0 -200 0 -200 0 0 0 Contingency 0 0 +400 -1600 -200 0 -200 0 0 -1600 PJM/NY/NE schedule change 0 0 0 -1200 0 -200 0 -200 0 -1600 No res...
AI summary The document provides a table and example illustrating the distribution of energy purchases and assistance during a contingency event, involving ISO-NE, PJM, and NYISO purchasing 700 MW each from Quebec on Sandy Pond. It outlines the initial shares, assistance sought, and total generation picked up after SAR is canceled.
4.0 Actions to Mitigate Thirty-Minute Reserve Shortages 4.1 Actions When Becoming Deficient in Thirty-Minute Reserve To minimize the magnitude and duration of a thirty-minute reserve deficiency, a Balancing Authority may implement any or a...
AI summary This section outlines actions a Balancing Authority may take to address a thirty-minute reserve deficiency, including obtaining external resources, recalling generator outages, recalling exports, and counting interruptible load and voltage reduction as reserve capacity.