World Environmental and Water Resources Congress 2018
Evaporation Losses in the Brazilian Hydropower System
Publication: World Environmental and Water Resources Congress 2018: Watershed Management, Irrigation and Drainage, and Water Resources Planning and Management
ABSTRACT
The Brazilian interconnected hydropower system consists of a linked network of 151 medium and large reservoirs, and is complemented by a large set of small hydropower, thermal, and wind power plants, with a total installed capacity of 162 GW. Energy, flood control, public water supply, irrigation, animal raising, wastewater disposal, navigation, and environment protection are among the multiple water uses of the system. In Brazil, hydropower is the predominant source of energy supply, representing from 71% to 93% of total energy consumption in the country during the last 17 years. The reservoir storage in the multi-reservoir system varies from 286,174 mm3 to 573,600 mm3, and the forebay area varies from 22,715 km2 to 37,894 km2. Installed energy production and storage capacities, and hydrological conditions vary significantly among different regions in the country. Evaporation losses from the storage reservoir are significant and must be accurately estimated. In this paper we use the HIDROTERM, a nonlinear programming optimization model previously developed for planning the operation of the Brazilian hydrothermal system, to estimate the loss of energy production in the system due to evaporation loss. We use different hydrological scenarios and different initial conditions to study the impact of energy loss among different reservoirs and regions in the country. The study is important for planning purposes, especially when the system is undergoing severe droughts.
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ACKNOWLEDGEMENTS
The research reported herein was supported by the Fundação para o Desenvolvimento Tecnológico da Engenharia (FDTE), Companhia Energética de São Paulo (CESP) and Agência Nacional de Energia Elétrica (ANEEL), Brazil, under grant PD-0061-0047/2014.
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Published In
World Environmental and Water Resources Congress 2018: Watershed Management, Irrigation and Drainage, and Water Resources Planning and Management
Pages: 85 - 92
Editor: Sri Kamojjala, Las Vegas Valley Water District
ISBN (Online): 978-0-7844-8140-0
Copyright
© 2018 American Society of Civil Engineers.
History
Published online: May 31, 2018
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