Notable Awards 

  Pacific Gas & Electric – Stanislaus – March 2009
American Governor Awarded PG&E’s Stanislaus Digital Governor Conversion

Ivyland, PA – American Governor Company (AGC) has been awarded a contract for the Pacific Gas & Electric (PG&E) Stanislaus Powerhouse. For this project, AGC will provide a new digital governor conversion system and commissioning and training services. The powerhouse features one (1) 81.9-megawatt hydro generator currently controlled by a Woodward Mechanical Cabinet Actuator.

The 6-needle Impulse unit will receive a digital control enclosure that replaces the existing governor control column, multiple electrohydraulic interface valve manifolds that will adapt to the existing deflector distributing valve and needle relay valves, and electronic speed and position feedback devices. The new digital control enclosure will feature redundant PLC controllers and a color touchscreen operator panel.

This plant plays an important role in PG&E’s power management in the region. Algorithms in the controller will provide advanced needle sequencing capabilities to improve the plant’s ability to respond to frequent load change requests. The redundant PLC arrangement is based on the same design implemented at PG&E’s Helms Pumped Storage Plant and is designed around a commercial, off-the-shelf Allen-Bradley Programmable Logic Controller (PLC) platform.

The new governor system will be installed in September 2009.

Pacific Gas & Electric-Stanislaus


About American Governor Company
American Governor Company provides fully engineered digital governor conversion systems for hydro plants, including PLC-based digital controls, electro-hydraulic valve manifolds, hydraulic power units, electronic feedback devices and unit/plant control and monitoring systems. Installation, start-up, commissioning and field training services are provided by our staff of experienced governor specialists and field service engineers. American Governor also provides full support for legacy governor systems, including a complete line of replacement parts for all types of Woodward governors and a growing inventory of new and reconditioned parts and assemblies for other OEM governors. American Governor offers Field Service, Training, Retrofit kits and Technical Support for legacy governors. The Training and Repair Facility near Stevens Point WI offers factory repair services for governor pumps and permanent magnet generators as well as our annual Governor School and twice yearly Focus Classes. American Governor has provided more than 600 digital governor upgrades and has supported over 1,500 hydropower plants in North America.

« Back