As a major source of energy, the proper utilization of hydro sources are an important task. For economic operation of a power system where the hydro plants constitute a significant portion of the installed capacity the efficient utilization of hydro resources plays an important role. The optimum scheduling of hydrothermal plants is one of the important planning task in power system operation. The generation scheduling problem consists of determining the optimal operation strategy for the next scheduling period, subjected to a variety of constraints. Determination of daily optimal...