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Dynamic Transfers Pseudo-Ties and Dynamic Schedules

Dynamic Transfers Pseudo-Ties and Dynamic Schedules. Discussion ISAS Meeting April 23, 2014. Dynamic Transfers WECC MIC Meeting October 13, 2011. Dynamic Transfers There are two types: Dynamic Schedules Pseudo-Ties

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Dynamic Transfers Pseudo-Ties and Dynamic Schedules

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  1. Dynamic TransfersPseudo-Ties and Dynamic Schedules Discussion ISAS Meeting April 23, 2014

  2. Dynamic TransfersWECC MIC MeetingOctober 13, 2011 Dynamic Transfers • There are two types: • Dynamic Schedules • Pseudo-Ties • For the purposes of this presentation, we are considering a traditional bilateral world.

  3. Dynamic TransfersWECC MIC MeetingOctober 13, 2011 Dynamic Schedules • Proposed NERC definition: • A time-varying energy transfer that is updated in real time and included in the Net Interchange Scheduled term in the same manner as an Interchange Schedule in the affected Balancing Authorities’ control ACE equations (or alternate control processes). • Typically used in the Southwest

  4. Dynamic TransfersWECC MIC MeetingOctober 13, 2011 Pseudo-Ties • Proposed NERC definition: • A time-varying energy transfer that is updated in real time and included in the Net Interchange Actual term in the same manner as a Tie Line in the affected Balancing Authorities’ control ACE equations (or alternate control processes) • Typically used in the Northwest

  5. Dynamic TransfersWECC MIC MeetingOctober 13, 2011 ACE Equation Area Control Error = (NIA - NIS) – 10β(FA - FS) – (other stuff) Net Interchange Scheduled Net Interchange Actual

  6. Dynamic TransfersWECC MIC MeetingOctober 13, 2011 Common Items • Both types use a dynamic transfer signal • Both type apply the signal to certain ACE equation components • Both types require transmission arrangements from Source to Sink • Both types support “capacity with energy up and down” transactions

  7. Dynamic TransfersWECC MIC MeetingOctober 13, 2011 UnCommon Items • Various services maybe required by “host” or “Native” BA for dynamic schedules but not necessarily for pseudo-ties.

  8. M Dynamic TransfersWECC MIC MeetingOctober 13, 2011 Interchange or Tie-Line Metering Applied to both ACE equations’ NIA but with opposite signs EMS 1 EMS 2 BA 1 BA 2

  9. M M Dynamic TransfersWECC MIC MeetingOctober 13, 2011 Dynamic Schedule for Load Dynamic Signal applied to both ACE equations’ NIS but with opposite signs EMS 1 EMS 2 BA 1 BA 2

  10. M M Dynamic TransfersWECC MIC MeetingOctober 13, 2011 Pseudo-Tie for Load Dynamic Signal applied to both ACE equations’ NIA but with opposite signs EMS 1 EMS 2 BA 1 BA 1 BA 2

  11. G M M Dynamic TransfersWECC MIC MeetingOctober 13, 2011 Dynamic Schedule for Generation Dynamic Signal applied to both ACE equations’ NIS but with opposite signs EMS 1 EMS 2 BA 1 BA 2

  12. G M M Dynamic TransfersWECC MIC MeetingOctober 13, 2011 Pseudo-Tie for Generation Dynamic Signal applied to both ACE equations’ NIA but with opposite signs EMS 1 EMS 2 BA 1 BA 2 BA 2

  13. Dynamic TransfersWECC MIC MeetingOctober 13, 2011 e-Tags and Dynamic Transfers • The tag is just a front, a representation, a place-holder • Dynamic Schedule e-Tags do not impact Scheduled Interchange before the fact or in real-time • The tag does not control the dynamic MWs so e-Tag curtailments will not on their own limit or change the dynamic transfer signal • Dynamic Schedule e-Tags will impact after-the-fact Scheduled Interchange values, so ATF adjustments are needed

  14. Thoughts???

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