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Yards Creek Overview

Asia-Pacific Partnership. on. Clean Development and Climate. Yards Creek Overview. Asia Pacific Partnership United States of America Power Generation Task Force August 13 – 17, 2007. J. Geuther, Manager Yards Creek. Yards Creek Overview. 400MW Pumped-Storage Station 3 Identical Units

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Yards Creek Overview

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  1. Asia-Pacific Partnership on Clean Development and Climate Yards Creek Overview Asia Pacific PartnershipUnited States of AmericaPower Generation Task ForceAugust 13 – 17, 2007 J. Geuther, Manager Yards Creek

  2. Yards Creek Overview • 400MW Pumped-Storage Station • 3 Identical Units • Commissioned 1965 • Three year Construction • Jointly Owned • Remotely Dispatched Yards Creek Overview 2

  3. Yards Creek Overview • Upper Reservoir • 163 Acres • 4763 AF Power Storage • 49’ Elevation Variation • Lower Reservoir • 302 Acres • 4763 AF Power Storage + Seasonal Storage • 18’ Elevation Variation • Auxiliary Reservoir • 380 AF Seasonal Storage Yards Creek Overview 3

  4. Yards Creek Overview • 3000MWH Energy Storage • Peak Load Generation • Load Regulation • Voltage Support • Black Start Capability Yards Creek Overview 4

  5. Equipment Suppliers • BLH Pump-Turbines—American Hydro Runners • Pelton Governors • GE Motor-Generators—National Electric Coil Rewinds • GE EX2000 Voltage Regulators • Allis-Chalmers Spherical Valves • Siemens 3AF Vacuum 14.4kv Generator Breakers • Siemens 230kv GCB’s • Westinghouse 144MVA Step-up Transformers • Delta Star 230kv Phase Reversal Switches • 375kva Emergency Generator Yards Creek Overview 5

  6. Operation • Upgraded Pump-Turbines—6% Efficiency Gain • 750,000+MWH Annual Generation • Equivalent Forced Outage Rate (EFOR) < 1% • High Starting Reliability Yards Creek Overview 6

  7. Daily Cycling • 7 hours Generation at Maximum Output • 9 hours to refill Upper Reservoir • 600 Generate Starts/Year per Unit Yards Creek Overview 7

  8. Staffing • On-site Staffing • 6 Hydro-Technicians • 1 Administrative • 2 Management • Corporate Support • Engineering • Environmental • Administrative • IT • Legal • Other • Contract Labor Services • Security Services Yards Creek Overview 8

  9. Priorities • Safety • Environmental and Regulatory Compliance • Federal Energy Regulatory Commission (FERC) • New Jersey Department of Environmental Protection (NJDEP) • Delaware River Basin Commission • Reliability • Cost Effective Operations Yards Creek Overview 9

  10. Operations • Remotely Dispatched from Reading, PA. • Automated with Local Operation Capability • Alarms are Remotely Telemetered • Reservoir Levels are Remotely Telemetered • 5 Minute Generate Starting • 10 Minute Pump Startup—Across Line Start Yards Creek Overview 10

  11. P/G Cycle Efficiency • Original = 67% • New Runners = 73% Yards Creek Overview 11

  12. Significant Projects • Pump-Turbine Upgrades – 70 MW increase • Unit No. 1 1995 • Unit No. 2 1993 • Unit No. 3 1996 • Motor-Generator Rewinds • Unit No. 1 1996 • Unit No. 2 1997 • Unit No. 3 1996 • 230kv Gas Circuit Breaker Replacements • Unit No. 1 2005 • Unit No. 2 2005 • Unit No. 3 2006 Yards Creek Overview 12

  13. Significant Projects • Voltage Regulator Replacement • Unit No. 1 2001 • Unit No. 2 2001 • Unit No. 3 2001 • Penstock Interior Inspection and Painting--1995 Yards Creek Overview 13

  14. Turbine Upgrades • Replacement runners • Modified/new wicket gates • Modified stayvane • Modified draft tube • New wicket gate linkage • Reinforcement of stayring bolting flange • Greaseless wicket gate bushings Yards Creek Overview 13

  15. Stator Rewinds • Unplanned Outages after20yrs Service • Achieved IncreasedCapability Yards Creek Overview 14

  16. 230kv GCB Replacement • Unplanned Outages after 20yrs Service • Achieved Increased Capability Yards Creek Overview 15

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