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Demand Response as a Distributed Energy Resource

Demand Response as a Distributed Energy Resource. presented by: Mark S. Martinez Manager, Program Development PLMA Fall Conference September 2004. DR Load Control. DR is used primarily as a reliability resource for load shedding at present

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Demand Response as a Distributed Energy Resource

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  1. Demand Response as aDistributed Energy Resource presented by: Mark S. Martinez Manager, Program Development PLMA Fall Conference September 2004

  2. DR Load Control • DR is used primarily as a reliability resource for load shedding at present • Geographic granularity may be limited (substation or district level) • Residential space conditioning load the primary end use under dispatch • Summer peaking situations most applicable due to coincidence with system stress and economic constraints

  3. SCE’s Existing System • 115,000 devices • Emergency trigger • 20% enhanced • 250 MW available • SCE system peak = 20,700 MW

  4. Typical CAC Average Duty Cycle

  5. New Smart Thermostat Technologies

  6. AC load reduction at customer facility from Smart Thermostat

  7. Advanced Load Control - The New DR • Systems can be dispatched more quickly for either reliability or economics • Residential and commercial systems can be used in concert to provide relief • Compatible with advanced metering • Easily dispersed and effective at the critical circuit level

  8. Comparable Load Relief Strategies Source: LIPA

  9. DR Resource Design: A Balancing Act Complementary Objectives Competing Objectives Key Messages: • * Price drivers = dependable (firm) load, immediate dispatch

  10. CAISO Graph : 9-7-04 (Tues)

  11. 2004 ACCP/API Events at SCE • ISO - March 8, 2004 – 6:23pm for 32 minutes – 302MW (Monday, unexpected shortage) • ISO - July 20, 2004 – 4:53pm for 4 hours, 10 min. – 193MW (Tuesday, heat storm) • DR – Sept. 10, 2004 – 3:29 for 1 hour, 6 minutes, 14MW (Friday heat storm*) • DR – Sept. 11, 2004 – 2:34 for 16 minutes, 7MW (Moorpark A bank) – Saturday! *1529 to 1635: Initiated AC Cycling for District 43 (Saddleback) due to overloading on Santiago-Limestone-Moulton 66 kV Line.

  12. Santiago A-Bank Total Power

  13. Irvine Number 1 B-Bank

  14. Irvine Number 2 B-Bank

  15. Circuit Level Granularity

  16. ALC as a Spinning Reserve?

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