Reliability evaluation for hydrothermal generating systems: Application tothe Spanish case

Reliability analysis of hydrothermal generating systems usually includes th e calculation of annual reliability indicators. This work describes a metho dology to evaluate annual reliability taking into account the maintenance p rogram of thermal units and the allocation of hydroenergy to the different subperiods of the year. The procedure takes advantage of the flexibility of hydro units to level the usual reliability indicators along the period of analysis. As an example, the analysis of the Spanish power system is presen ted. (C) 1999 Elsevier Science Ltd. All rights reserved.