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National Instantaneous Reserves Market Vladimir Krichtal Transpower New Zealand

National Instantaneous Reserves Market Vladimir Krichtal Transpower New Zealand. HVDC transfer model. Power transfer. NI. SI. Reserves Transfer. Economics behind reserve transfer. Reserve price function. New Reserves price function. Reserves price. Reserve Revenue saving.

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National Instantaneous Reserves Market Vladimir Krichtal Transpower New Zealand

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  1. National Instantaneous Reserves Market Vladimir Krichtal Transpower New Zealand

  2. HVDC transfer model Power transfer NI SI Reserves Transfer

  3. Economics behind reserve transfer Reserve price function New Reserves price function Reserves price Reserve Revenue saving Reserve price decrease Reserve price New Reserve price Risk Reserves 0 Local Reserves cleared Reserves Import

  4. Frequency Stabiliser and Instantaneous Reserves Sharing Reserves sharing (MW) Frequency stabiliser dynamic Instantaneous reserves sharing Guaranteed reserves sharing level 250 MW 30sec Time (sec.)

  5. HVDC load duration curve & reserves transfer ability 800 Power transfer NI reserves transfer 250 North received (MW) Amount of time (%) 0 0 50 100 -250 SI reserves transfer -400

  6. Structure of power and reserves flows at the HVDC line NI Reserves RampUp NI reserves transfer Power dead band Power flow limit - stable state Power flow limit overload NI & SI Modulation Limits 0 NI power transfer SI Reserves RampDown SI reserves transfer

  7. Existing Risk-Reserve model G1 Risk Gn Risk Manual Risk GEN GEN HVDC Biggest Zone Risk = max(G1,..,Gn,Man,DCE,DCECE)= G1 DC Risk Island’s Reserve Price ILR Zone Res. pool

  8. New Reserves model • HVDC reserves transfer capability. Using instantaneous reserves from one reserve zone to cover generation risks in the other reserve zone. • New reserves price structure.

  9. Proposed Risk-Reserves model G1 Risk G2 Risk Manual Risk GEN GEN G1 Res pool price G1 Res pool price G1 Res pool price G1 Res pool HVDC G2 Res pool Man Res pool DC Risk ILR G1 Res pool price HVDC Res pool Res Export Res Import

  10. New Reserves model (1)

  11. New Reserves model (2)

  12. Reserve transfer constraints (1)

  13. Reserve transfer constraints (2)

  14. Zonal reserve price

  15. Old- New Reserves Revenue Difference

  16. The SPD model prototype : • HVDC configuration aggregation. • HVDC Losses adjustment. • Estimating parameters of HVDC reserve transfer capabilities. • The SPD prototype coding for simulation a new SPD model with HVDC reserve transfer ability.

  17. Reduction of Energy and Reserves revenue and cost: • Reserves sharing between islands. • Co-optimisation between Energy and Reserves . • Applying shadow price of each binding risk in case of multiple risk contingency instead of one price for each reserve zone.

  18. Revenue Difference (May 2004)

  19. Total Cost Difference (May 2004)

  20. Results • Total revenue saving reaches $9.6m. over 4 months. • Net economic benefit reaches $0.68m. over 4 months.

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