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  Arkansas Electric Cooperative Corporation – HS9 and HS13 Governor Replacements
Arkansas Electric Cooperative Corporation – HS9 and HS13 Governor Replacements

Ivyland PA – American Governor Company (AGC) has been awarded a contract to replace the governor and unit controls at the Arkansas Electric Cooperative Corporation’s HS9 & HS13 Hydro Generating Stations on the Arkansas River.

The Carl S. Whillock Hydroelectric Generating Station (HS9, pictured) is located at the Arthur V. Ormond Lock and Dam owned by the Army Corps Engineers (USACE) near Morrilton, Arkansas, and the Clyde T. Ellis (HS13) Hydroelectric Generating Station is located at the James W. Trimble Lock and Dam owned by the USACE near Fort Smith, Arkansas.

Each station contains three (3) Horizontal Axis Kaplan (Pit Type) turbines, and drive generators rated at 32.4MW each, at a net head that varies from 5 to 21 feet. The units were originally furnished with OEM Voest Alpine governors, and had been converted to PLC digital control around 2005. The project will include retrofitting the existing Plant, Unit, Governor, as well as all software and installation engineering. The existing governor oil system, hydraulic control valves, and existing field transmitters will be retained and reused. The contract includes installation, and startup.


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.

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