Transcript Jeff Reichmuth
LOWER BAKER FLOW IMPLEMENTATION DEVELOPMENT OF UNIT 4 POWERHOUSE
Jeffrey Reichmuth Consulting Engineer February 18, 2014
TOPICS OF PRESENTATION 30MW Hydroelectric Facility with Synchronous By-pass Valve and Neighboring 85MW U3 Aquatics Requirements Key to License Minimum In-Stream flow 1200cfs/1000cfs Ramping Requirements, 1inch per Hour Control Strategies Economic Dispatch – Dam, Unit 3, Unit 4, SBV Construction Started December 2010 Commissioning June 2013
Baker River Hydroelectric Project, Concrete, WA
LOWER BAKER PROJECT AREA
Skagit River Near Concrete Washington Skagit River USGS Gage for In-stream Flow Compliance Baker River USGS Gage - Minimum In-Stream Flow 1200/1000 cfs Ramping Restrictions in effect when flow below 26,000 cfs in Skagit River
Aquatics Table Mandating Flow
Aquatics Ramping Rate Figure Ramping Rate in Inches per Hour
Down Ramp of Facility based on Aquatics Table
SITE SELECTION PROCESS FERC License 2150 – October 17, 2008 FERC - Board of Consultants Selected Various Sites And Options Reviewed Option With Synchronous By-pass Valve Ultimately Selected Site 5 Geotechnical Baseline Report Prepared Slope Stability Exploration Plan Prepared Site 1 Site 2 Site 3 Site 4 Site 5 – – – – – Low Level Outlet in Dam South Portal PH in Cavern Old Units #1 and #2 Location PH South of Unit #3 PH 400 Feet South of Unit #3,Two Tunnel Length Options
ALIGNMENT OF UNIT 4 POWER TUNNEL
Geologic Perspective of Facility Arrangement
SLOPE STABILITY MEASURES Slope Stability Exploration Indicated Movement Of Slope During Wet Seasons Buttress Wall Built at Main Powerhouse Excavation Soldier Pile Wall Built Near Access Road Horizontal Drains Installed Into Slope Constant Electronic Slope Monitoring Installed Evacuation Alarm Installed For Construction
Subterranean Powerhouse Autodesk – Navisworks Model, Developed by Black and Veatch
Section through Navisworks Model Section Through Powerhouse
OWNER FURNISHED EQUIPMENT PSE Supplied the Turbine, Generator and the Station Transformer Turbine Provided by Litostroj Power, Ljubljana, Slovenia Generator Provided by Končar Generators and Motors, Zagreb, Croatia Station Transformer Provided by Waukesha Electric Systems, Waukesha, WI
Setting the Rotor with 550T Mobile Crane Generator Installation
Synchronous By-pass Valve
Just add water…