Minimização do Conflito Entre a Geração de Energia Elétrica e o Controle de Cheias no Planejamento da Operação de Reservatórios I: Teoria

Abstract

One of the particularities of the Interconnected Brazilian Hydrothermal System operation planning is the need to use part of the volumes of the hydroelectric plants reservoirs as waiting volumes for attenuation of possible floods. These volumes are calculated through the Flood Prevention Studies, based on the Critical Paths of the synthetic flow scenarios. The use of the reservoir volumes for electricity generation and flood control is subject to conflict, since the former attempts to keep the reservoirs as full as possible and the latter to keep them partly empty, for the same period. Thus, the first article, of this series of two, presented three methodological proposals: i) Disregard the waiting volumes allocated for critical paths recession, ii) Use the forecast flows to calculate the critical path and iii) Change the waiting volumes at the end of the rainy season according to the average monthly flow observed in the initial months of the season. In this article, all methodologies proposed were tested in the River Parana basin to check their applicability and effectiveness. For simplification, the River Parana basin was considered as an equivalent reservoir until the reservoir of Jupia, considering just one flood control point downstream of this plant. According to the results, a new methodology is proposed combining two of the methodologies proposed, with better results