Author(s): Artur Cerveira Bertone, Daniel Henrique Marco Detzel

Linked Author(s):

Keywords: Brazil Hydroelectricity; Degree of Regulation; Useful storage;

Abstract: Large Hydroelectric Power Plants (HPP) has a great importance for Brazilian Electric System (SEB), 60% of the installed power capacity comes from this source. However, in the last two decades, environmental restrictions have hampered the construction of plants with accumulation reservoir, which impacted the system. This article aims to highlight the importance of HPP`s with accumulation reservoirs for the power service reliability, since these have the capacity to reserve water to be used during periods of drought and to balance the volatility caused by renewable energy sources such as solar and wind. The study introduces the historical evolution Brazilian hydroelectric system installed of hydropower generation and water accumulation capacity in terms of active storage. The progress demonstrates each hydroelectric project contribution to the system and shows how the implementation of run-of-the-river hydroelectric plants significantly affected the capacity of flow regularization and water accumulation in the hydroelectric generation systems over the years. The study also presents the Degree of Regulation (DOR) of the Brazilian Electric system, revealing that this country currently has few multi-year regularization HPP’s. The results in this article demonstrates an analysis of the Electric System, considering that it is losing the regularization capacity recently.

DOI: https://doi.org/10.3850/38WC092019-1075

Year: 2019