Head-Dependent Maximum Power Generation in Short-Term Hydro Scheduling using Nonlinear Programming

S.J.P.S. Mariano, J.P.S. Catalo, V.M.F. Mendes, and L.A.F.M. Ferreira (Portugal)

Keywords

Shortterm hydro scheduling, nonlinear programming, power generation, and head dependence

Abstract

This paper is on the problem of short-term hydro scheduling. We propose a method, based on nonlinear programming, which considers hydroelectric power generation as a nonlinear function of water discharge and of the head. The main contribution of this paper is that the maximum power generation is also considered as head-dependent in order to obtain more realistic and feasible results. The proposed method has been applied successfully to solve a case study based on one of the Portuguese cascaded hydro systems, providing a higher profit at an acceptable computation time in comparison with classical optimization methods based on linear programming that ignore head dependence.

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