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This paper is on the short-term hydro scheduling (STHS) problem, particularly concerning a head-dependent cascaded hydro system. A mixed-integer quadratic programming approach is proposed for the STHS problem, considering not only head-dependency, but also discontinuous operating regions and discharge ramping constraints. Moreover, market uncertainty is introduced in the model via price scenarios, and risk-aversion is considered by limiting the volatility of the expected profit. Numerical results, based on one of the main Portuguese cascaded hydro systems, illustrate the proficiency of the proposed approach. Finally, conclusions are duly drawn.