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2015 RTP Scope and Process Review October 21, 2014

2015 RTP Scope and Process Review October 21, 2014. Outline. 2015 RTP: What’s New 2015 RTP Process 2015 RTP Timeline. 2015 RTP: What’s New. New TPL Standard TPL-001-4 will be in effect for 2015 RTP

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2015 RTP Scope and Process Review October 21, 2014

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  1. 2015 RTP Scope and Process Review October 21, 2014

  2. Outline • 2015 RTP: What’s New • 2015 RTP Process • 2015 RTP Timeline

  3. 2015 RTP: What’s New • New TPL Standard TPL-001-4 will be in effect for 2015 RTP • Scope of contingency definitions considered for the RTP will be broadened to include all categories applicable to TPL-001-4 • Additional sensitivity cases and analysis will be performed

  4. 2015 RTP: Impact of new TPL standards • New Off-peak (minimum load case) will be studied as a base case along with the summer peak cases • New contingency categories, P0-P7 and extreme events instead of A, B, C and D will be studied • Shunt devices to be considered as single element contingencies • Open Line (one-end of the line) without a fault • Definition of second level contingency in G-1+N-1 expanded to include Generators and Shunt devices

  5. 2015 RTP: Impact of new TPL standards • Non-consequential load shedding shall no longer be an acceptable mitigation plan for the following contingencies • P2-2-Bus Section Fault (345-kV) • P2-3 Internal failure of non-bus tie breaker (345-kV) • P3-1 G-1+G-1 • P4 – Stuck breaker of non-bus-tie breaker (345-kV) • P5 – Failure of non-redundant relay (345-kV) • Req. 3.3.1 of TPL-001-4 requires automatic tripping of elements where relay loadability limits are exceeded post-contingency • Until such ratings are added to the models a default limit of 115% will be used for 345-kV elements and 100% will be used for elements below 345-kV

  6. 2015 RTP: Impact of new TPL standards • New sensitivity cases will be studied for each of the base cases • The sensitivity case for 2015 RTP will be prepared to study the effect of reduced reactive resource capability • Short Circuit Analysis will be conducted on year 3 and 5 summer peak cases with all projects modeled.

  7. 2015 RTP: Other updates • Reserve margin of 2800 MW (instead of 1375 MW) will be used in the reliability cases to address G-1+G-1 conditions • Dynamic ratings will be applied in reliability analysis (in addition to the economic analysis) • TPs will be requested to identify generic equipment type which may take longer to replace; these will be studied as a first level contingency in N-1+N-1 test

  8. 2015 RTP Process

  9. 2015 RTP: Timeline (tentative)

  10. Questions?

  11. Contingency Categories

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