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Regulation and Frequency Control

Regulation and Frequency Control. Raymond R. Vojdani, P.E. Operations Project Manager Western Area Power Administration Rocky Mountain Region. Regulation and Frequency Control. WACM as a Control Area Must Regulate its Load and Must Contribute to the Interconnections Frequency Regulation

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Regulation and Frequency Control

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  1. Regulation and Frequency Control Raymond R. Vojdani, P.E. Operations Project Manager Western Area Power Administration Rocky Mountain Region

  2. Regulation and Frequency Control WACM as a Control Area Must Regulate its Load and Must Contribute to the Interconnections Frequency Regulation In Addition WACM Needs to Regulate for any Generations Variation and Mismatch

  3. Regulation and Frequency Control Generation and Load Statistics WACM Peak Gen Capacity: 5350 MW Average Generation: 3500 MW WACM Peak Load: 3090 (July 2003 ) Average Load: 2160 MW

  4. Regulation and Frequency Control • Generation Types/Owners in the CA: • Federal Hydro Generators • Load Serving Entities Generators • Entities with Load Outside WACM CA but Generation inside WACM CA • Independent Power Producers • Water Conservancies

  5. Regulation and Frequency Control • Federal Hydro Generations: • Roughly about 750 MW capacity and about 520 MW of energy due to water conditions • Scheduled to Federal preference customers inside or outside WACM CA • Responsible for CA Regulation and Frequency Response (80%) • Also covers Reserves and Losses

  6. Regulation and Frequency Control • Load Serving Entities Generations • Used to serve load in the CA • Excess sold to the entities Inside or outside the CA • Mostly fossil fuel steam turbines, but, also Gas Turbine, Combined Cycle, Wind Turbine, Diesel, and other types of generators.

  7. Regulation and Frequency Control • Entities with Load Outside WACM CA but Generation Inside WACM CA • Salt River Project ( 250 MW of CRG #2 and CRG #3) • Platte River Power Authority ( 150 MW of CRG #2 and CRG #3, 5.6 MW of Medicine Bow Wind Farm) • PacifiCorps ( about 165 MW of CRG #2 and CRG #3)

  8. Regulation and Frequency Control • Independent Power Producers Not too much, only a 6 MW unit in Western Colorado, owned by Williams Energy • Water Conservancies Delores Power Project (two generating units of about 12 MW) Williams Forks Denver Water Board (one generator of about 3 MW)

  9. Regulation and Frequency Control Observations: WACM CA is Required to Regulate for Load, Frequency, and Generation Variations • WACM Needs to Recover its Regulation Costs • WACM Currently Has a Load Based Regulation Rate • WACM May Needs to Develop a Generation Based Rate

  10. Load Variation (CA)

  11. Load Variation (BHP)

  12. Generation Variation (Steam Turbine, LRS #2)

  13. LRS #3

  14. CRG #3

  15. Generation Variation (Craig # 2)

  16. Generation Variation (Williams)

  17. Generation Variation, Medicine Bow Wind Farm, Capacity 5.6 MW)

  18. Regulation and Frequency Control Where are we thinking? Revisit the Entire Regulation Issue Identify Who and What Utilizes the Regulation Resource Examine Load and Generation Separately and Identify the Impact of Each Component Based on the impact, allocate the cost so that everybody pays their faire share of cost based on their usage of this resource

  19. Regulation and Frequency Control Regulation Consumption = ∑ ( dG(t)/dt + dL(t)/dt ) Regulation Consumption = ∑ dGa(t)/dt + dLa(t)/dt + dGb(t)/dt + dLb(t)/dt +…..+ dGz(t)/dt + dLz(t)/dt

  20. Regulation and Frequency Control Summary: We are Delighted for your participation We are here to listen to your suggestions or any comments you might have We are doing this because you asked us to examine the issue more throughly We like to make this process as democratic as we are allowed under our Federal and Legislative mandates Questions ?

  21. Regulation and Frequency Control Questions ? Telephone: (970) 461-7379 E-mail: avojdani@wapa.gov

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