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RESEARCH PAPERS

Instability of a Hydraulic Turbine With a Very Long Penstock

[+] Author and Article Information
F. O. Ruud

Technical Engineering Analysis Branch, Division of Design, Bureau of Reclamation, U. S. Department of the Interior, Denver, Colo.

J. Eng. Power 87(3), 290-293 (Jul 01, 1965) (4 pages) doi:10.1115/1.3678250 History: Received July 28, 1964; Online January 10, 2012

Abstract

Hydraulic turbine instability at speed-no-load was experienced during the initial operation of two impulse turbines having very long penstocks. This paper describes the steps taken to achieve stability, including alteration of the mechanism between the governor and the needle servomotors. It is shown that while different governor dashpot settings may affect the operation of the governing mechanism, other changes in the mechanism external to the governor also profoundly affect the operation of the unit.

Copyright © 1965 by ASME
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