1 / 15

Energy Management

Energy Management. Dave Halverson Orange County Sanitation District. OCSD Overview. Two Treatment Plants – Fountain Valley and Huntington Beach Serving north Orange County – 2.5 million people Average influent is 240 MGD, 210 recently

thane
Download Presentation

Energy Management

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Energy Management Dave Halverson Orange County Sanitation District

  2. OCSD Overview • Two Treatment Plants – Fountain Valley and Huntington Beach • Serving north Orange County – 2.5 million people • Average influent is 240 MGD, 210 recently • Plant 1 provides about 80 MGD to the Ground Water Replenishment Program • Flow diverted from Plant 2 at night (20 MGD)

  3. Plant 1 Electrical System • Existing peak demand = 7 MW • 2014 estimated peak demand = 17 MW • Co-gen facility rated 5 MW • New 66kV substation – dual sourced • Standby generators for critical loads • ION 7550 power monitor based

  4. Plant 2 Electrical System • Existing peak demand = 7.5 MW • 2014 estimated peak demand = 7 MW • Co-gen facility rated 13 MW • 66kV substation – single sourced • Standby generators for critical loads • ION 2300 power monitor based

  5. Energy System Challenges • CenGen operation is limited by AQMD • Large capital expansion program pushes energy conservation projects out • Plant 2 energy efficiency will be challenged with a growing diurnal curve • Energy monitoring and control systems are too basic and high level • The 4.5 mile digester gas pipeline between the two treatment plants is out of service • Limited process storage capacity

  6. Energy Management Approach • Know the Energy Demands • Know What You Are Paying • Understand the Onsite Energy Generation • Build Efficiency Into New Projects • Communicate with Operations • Participate in Edison Efficiency Programs • Monitor Alternative Energy Technologies

  7. Know the Energy Demands • Central Generation Automation Project • Power SCADA system project at Plant 1 • Home grown SCADA project at Plant 2 • Annual est. of power used by each process

  8. Know What You Are Paying • Recording Bills in a Spreadsheet • Analyze for accuracy and trends • Credit for $25K in March • Learn the Tariffs • Peak hours/time of year • Meet with Utility Reps

  9. Understand the Onsite Energy Generation • Record Generation Metrics in Spreadsheet • Trend Fuel Use, Output, and Efficiencies • Identified Excessive Flaring of Digester Gas • Obtained AQMD Permit Change

  10. Build Efficiency Into New Projects • Premium efficiency motors • Use of variable speed motor controllers • High efficiency lamps and ballasts • Multi-level lighting

  11. Build Efficiency Into New Projects (cont.) • Optimize pumping applications to maximize efficiency • Challenge Process Designs • Oxygen Plant (Comp vs Membrane) • Primary Sludge Thickening

  12. Communicate with Operations • Know the Treatment Process • Challenge Operational Procedures • PEPS Pumps • Make Energy Info Available

  13. Participate in Edison Efficiency Programs • Savings by Design • Pump Testing and Optimization Program • Energy Conservation Review • BacGen

  14. Monitor Alternative Energy Technologies • Value of Digester Gas as Renewable Fuel • FOG Program • Solar • Fuel Cell

More Related