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Special Protection System Exit Strategy Project Approval Criteria

Special Protection System Exit Strategy Project Approval Criteria. Jeff Billo. Background. NERC requirements (PRC standards) for SPS monitoring, maintenance, testing and reporting At this time there is not a NERC requirement to exit an SPS ERCOT SPS rules contained in Operating Guide 6

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Special Protection System Exit Strategy Project Approval Criteria

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  1. Special Protection System Exit Strategy Project Approval Criteria Jeff Billo RPG

  2. Background • NERC requirements (PRC standards) for SPS monitoring, maintenance, testing and reporting • At this time there is not a NERC requirement to exit an SPS • ERCOT SPS rules contained in Operating Guide 6 • ERCOT Reviews SPSs • 2 Types of SPSs • Type 1 = wide-area impact • Type 2 = local-area impact • OG 6.2.2(16) requires Transmission Owner to identify an exit strategy (or explain why it is not needed) for each SPS • Currently there is not a formal criteria for approving SPS exit strategy projects RPG

  3. SPS exit strategy • Assumptions: • SPSs are reliable • SPSs cost less to keep than capital cost of implementing exit strategy transmission upgrades • So why exit SPSs? • Risk of SPS mis-operation • Maintenance, monitoring, and reporting costs • Additional burden of monitoring placed on operators causes more risks RPG

  4. Criteria for approving SPS exit strategy projects • Current practice/ criteria: • Remove SPS from UPLAN base case to create reference case • Create upgraded case by adding exit strategy project to reference case • Run economic simulation and compare production costs between upgraded and reference cases • If savings meet economic planning criteria then will recommend exit strategy • Improvements to criteria? • Quantify risks and overhead costs? • Other ideas? RPG

  5. Questions? March 12, 2010 RPG

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