Water‐Level Control in Hydropower Plants
Publication: Journal of Energy Engineering
Volume 118, Issue 3
Abstract
The stability of a controller used to control the water level in the forebay or afterbay of a hydroelectric power plant is investigated by using the Routh‐Hurwitz stability criterion. It is shown how the characteristics of the controller influences the required size of the forebay in a plant with a surge tank, while there are no restrictions regarding stability for a plant without a surge tank. Computer simulations of the water‐level oscillations in a hydropower plant including all major nonlinearities verify these conclusions and show that the operation with small flows is critical as far as the stability is concerned. Guidelines are given to select the dimensions of the forebay for preliminary design. A practical example illustrates the application of this type of control system.
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References
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Information & Authors
Information
Published In
Journal of Energy Engineering
Volume 118 • Issue 3 • December 1992
Pages: 180 - 193
Copyright
Copyright © 1992 ASCE.
History
Published online: Dec 1, 1992
Published in print: Dec 1992
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