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Demand Response Options Review

Demand Response Options Review. Carl Raish November 27, 2007. ERCOT Load Profiling. ERCOT requires a fifteen (15) minute settlement interval Vast majority of Customers do not have this level of granularity Profiles are created using adjusted static models

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Demand Response Options Review

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  1. Demand ResponseOptions Review Carl Raish November 27, 2007

  2. ERCOT Load Profiling • ERCOT requires a fifteen (15) minute settlement interval • Vast majority of Customers do not have this level of granularity • Profiles are created using adjusted static models • Models estimate customer level interval load based on • calendar-type data (season, day of week, time of day) • weather data (temperature, wind-speed, cloud-cover, dew-point) • Backcasted Profiles are generated the day following a trade day and used for all settlements (initial, final and true-up) • Load Profiling • Converts monthly kWh reads to fifteen (15) minute intervals • Enables the accounting of energy usage in settlements

  3. ERCOT Load Profiling • ERCOT Load Profile Models are documented in Appendix E of the Load Profiling Guide on the ERCOT website • http://www.ercot.com/mktrules/guides/loadprofiling/current.html

  4. ERCOT Load Profiling • ESI IDs are linked to Load Profile Models by their Load Profile ID • Rules for assigning ESI IDs to Load Profile ID are also documented in Appendix D of the Load Profiling Guide http://www.ercot.com/mktrules/guides/loadprofiling/2007/11/AD001/Appendix_D_-_Profile_Decision_Tree_110107.xls

  5. 3 Load Profile Groups - 10 Segments Residential (2) Low-Winter Ratio (Non-electric Heat) High-Winter Ratio (Electric Heat) Business (6) Low Load Factor Medium Load Factor High Load Factor Non-Demand IDR Default OGFLT Non-Metered (2) Lighting (Street Lights) Flat (Traffic Signals)

  6. 8 ERCOT Weather Zones

  7. 10 Profile Segments 8 Weather Zones 80 Load Profiles Total Profiles

  8. Profile IDs • Additional Fields in the Load Profile ID: • Meter Data Type Code (IDR or NIDR) • Weather Sensitivity Code (NWS or WS) • TOU Schedule Code (NOTOU, TOU01, TOU02, …, TOU12, TOU13) • Examples of valid Profile Ids: RESHIWR_COAST_NIDR_NWS_NOTOU RESLOWR_SCENT_NIDR_NWS_NOTOU

  9. Profiling For Demand Response • Adjusted static models cannot capture dynamic control events • The Load Profiling Guide specifies that Lagged Dynamic Profiles will be used to settle demand response programs • Interval data collected from a representative sample of program participants to capture load impacts of control events as they occur • Each demand response program will need a unique profile (shape) • ERCOT systems need to accommodate numerous additional profiles (shapes), and • A method for linking participating ESIIDs to their specific demand response program

  10. Summary of PWG Options • Demand Response programs will be CR specific • ERCOT will be assigning each program unique code/codes • ESIIDs on a DR program will need to be linked to the code assigned by ERCOT for settlement • PWG has considered a number of options to implement the coding

  11. Option 1: DR Program Coded in Profile ID Segment • ESI IDs participation in a DR program indicated in the Load Profile Segment field • Example: • Profile Type Code before: RESLOWR – (RESLOWR no DR program) • Profile Type Code after: RESL0001 – (RESLOWR on DR program ‘01’)

  12. Option 2: DR Program Coded in TOU Field • ESI IDs participation in a DR program indicated in the TOU Schedule field of the Load Profile ID • Examples: • TOU Schedule before: NOTOU – (No DR program / No TOU) • TOU Schedule after: ‘D0100’ – (DR program ‘01’ / No TOU) • TOU Schedule after: ‘D0203’ – (DR program ‘02’ / TOU Schedule ‘03’) • TOU Schedule before: D0103 – (DR program ‘01’ / TOU Schedule ‘03’) • TOU Schedule after: ‘D0100’ – (DR program ‘01’ / No TOU) • TOU Schedule after: ‘NOTOU’ – (No DR program / No TOU) • TOU Schedule after: ‘TOU03’ – (No DR program / TOU Schedule ‘03’) • TOU Schedule before: TOU05 – (No DR program / TOU Schedule ‘05’) • TOU Schedule after: ‘D0105’ – (DR program ‘01’ / TOU Schedule ‘05’) • TOU Schedule after: ‘D0200’ – (DR program ‘02’ / No TOU)

  13. Option 3: DR Program Coded in Weather Sensitivity Field • ESI IDs participation in a DR program indicated in the Weather Sensitivity field of the Load Profile ID • First position of WS code ‘D’ for all participants on a DR program • Examples: • Weather Sensitivity Code before: NWS – (No DR program / Non WS) • Weather Sensitivity Code after: ‘D01’ – (DR program ‘01’ Not WS) • Weather Sensitivity Code before: ‘D01’ – (DR program ‘01’ Not WS) • Weather Sensitivity Code after : ‘NWS’ – (No DR program / Non WS)

  14. Option 4: DR Program Coded in Profile ID Segment (Modified) • ESI IDs participation in a DR program indicated in the Load Profile Segment field of the Load Profile ID • Very similar to Option 1 • Definition of the Profile Group changed to always be the first 3 positions • Fourth position would be a Profile Segment Letter • Last 4 positions for DR programs • Example: • Profile Type Code before: RESL0000 – (RESLOWR no DR program) • Profile Type Code after: RESL0001 – (RESLOWR on DR program ‘01’)

  15. Option 5: DR Program Coded in Weather Sensitivity Field (Modified) • ESI IDs participation in a DR program indicated in the Weather Sensitivity field of the Load Profile ID • First position of WS code ‘W’ for Weather Sensitive ESI IDs and ‘N’ for Non-Weather Sensitive ESI IDs • Last two positions for DR program • Examples: • Weather Sensitivity Code before: NWS – (No DR program Non WS) • Weather Sensitivity Code after: ‘N01’ – (DR program ‘01’ Not WS) • Weather Sensitivity Code after: ‘W01’ – (DR program ‘01’ WS) • Weather Sensitivity Code before : N01 – (DR program ‘01’ Not WS) • Weather Sensitivity Code after : ‘NWS’ – (No DR program Non WS) • Weather Sensitivity Code after : ‘W01’ – (DR program ‘01’ WS)

  16. Option 6: Texas Set Change to Allow Dynamic Profile ID Changes • Texas Set changes to automatically update Profile IDs in response to changes to DR program participation • Switch • MoveIn • MoveOut

  17. Option 7: IDR Settlement for DR Programs • IDR settlement is currently available for DR program participants • No Lagged Dynamic Profile would be needed • No DR program coding necessary

  18. Option 8: DR Program Coded in a New Profile ID Field • Extend length of Profile ID field to add a new field for coding DR participation

  19. Option 9: Lookup Table to Flip Profile ID Before Settlement • Create lookup table to link CRs to DR programs • Used in conjunction with Option 1 • ESIIDs with invalid CR to DR program relationships identified • Profile Id modified prior to settlement • Profile Ids reverted to original values after settlement completes

  20. Questions? ON OFF

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