Reliability Standards

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Status
SAC authorized the formation of a SAR drafting team to work on IRO-006 General Update with NAESB.  The team will ultimately separate the business practice and reliability requirements, allowing future modifications to be addressed by either NERC or NAESB, as recommended by FERC.

Purpose/Industry Need
The Interchange Distribution Calculator Working Group (IDCWG) is requesting a modification to the NERC Transmission Loading Relief (TLR) Procedure to clarify the wording related to the implementation of a TLR Level 4 (Section 2.5).  In addition, the IDCWG proposes modifying Section 2.4 and Section 7 to provide for the Reallocation of Markets Flows and Interchange Transactions at the top of the next hour for the issuance of a TLR Level 3b.  The reliability benefit is that a Reliability Coordinator will no longer be required to call a TLR Level 3a as soon as the System Operating Limit or Interconnection Reliability Operating Limit violation that caused the TLR Level 3b to be initiated has been mitigated, since the proposed revision results in a next hour Reallocation.  The proposed revision to the standard has been endorsed by the NERC Operating Reliability Subcommittee.