Journal
ENERGY CONVERSION AND MANAGEMENT
Volume 49, Issue 11, Pages 2973-2978Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.enconman.2008.06.023
Keywords
Hydropower generation; Adjustable speed operation; Energy and operational gains; Irrigation reservoir
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This paper deals with the issue of adjustable speed operation (ASO) of hydropower plants. The main idea of this technique is to allow the turbine speed to change in accordance with hydraulic conditions, thus improving the overall unit efficiency. General technical aspects of ASO are further discussed with special emphasis on the energy and operational benefits that may potentially result from its application. In order to assess these benefits, annual operation of a hydropower plant associated to an irrigation reservoir has been simulated under different scenarios, with both adjustable and fixed speed. Turbine operating range proved to be wider with ASO. In addition, simulation results confirm that considerable energy gains are expected to be obtained. (C) 2008 Elsevier Ltd. All rights reserved.
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