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Hydraulic Transient Analysis of High-Head Hydropower Project

by T. Giorgis Goitom, Michael Baker Jr. Inc, United States,
Stephen R. Bonema, Michael Baker Jr. Inc, United States,



Document Type: Proceeding Paper

Part of: Hydraulic Engineering

Abstract:

An iterative computer simulation procedure called LIQT (Liquid Transient), which performs simulations of hydraulic transients in closed conduit hydro-power systems, is used to estimate the magnitude of waterhammer pressures and surge levels during several transient process. LIQT procedure employs the Method of Characteristics procedure and models an array of pipeline hardware, including pumps, turbines valves and surge protection devices. The main objective of this study is to determine the maximum and minimum transient pressures along the power conduit for various loading conditions so as to determine the allowable closure rate of the needle valves for the Pelton units. The case study used is the high-head Finchaa Hydropower Project in Ethiopia which was built about 1973.

Subject Headings: Hydro power | Transient response | Case studies | Hydraulic transients | Water hammer | Valves | Project management | Ethiopia | Africa

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