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Ralston and Middlefork Hydro Governor Conversions

Plant Location:
California

Owner:
Placer County Water Agency

Plant Address:
Placer County Water Agency
PO Box 6570, 144 Ferguson Road
Auburn, CA 95604

Project Description:
Work recently awarded to L&S Electric includes the governor conversions for the Ralston and Middlefork Hydro Plants.  Original control equipment for the (3) six needle impulse turbines consists of Voith mechanical cabinet actuators.  The purpose for the modernization is to eliminate aging and proprietary equipment that is becoming difficult and expensive to maintain. The solution from L&S Electric includes PLC-based governors, including new distributing valves, which incorporate sequential needle control to maximize efficiency.  Also included is a river management system to maximize use of the available water.