Development of a tool for hydroeletric reservoir operation with multiple uses considering effects of climate changes. Case study of Furnas HPP

Ribeiro, Leopoldo Uberto; Zuffo, Antônio Carlos; Silva, Benedito Cláudio da

doi:10.21168/rbrh.v21n2.p300-313

Cited by 7 publications

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“…The Grande River Basin has been the subject of hydrological modelling [6][7][8][9] due to its importance in the production of electric energy in Brazil. It is located in a region with a high demand for water resources, not only for hydroelectric plants, but also for industrial use and agriculture [10].…”

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confidence: 99%

Historical Streamflow Series Analysis Applied to Furnas HPP Reservoir Watershed Using the SWAT Model

Dias

Luz

Medero

et al. 2018

Water

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Over the last few years, the operation of the Furnas Hydropower Plant (HPP) reservoir, located in the Grande River Basin, has been threatened due to a significant reduction in inflow. In the region, hydrological modelling tools are being used and tested to support decision making and water sustainability. In this study, the streamflow was modelled in the area of direct influence of the Furnas HPP reservoir, and the Soil and Water Assessment Tool (SWAT) model performance was verified for studies in the region. Analyses of sensitivity and uncertainty were undertaken using the Sequential Uncertainty Fitting algorithm (SUFI-2) with a Calibration Uncertainty Program (SWAT-CUP). The hydrological modelling, at a monthly scale, presented good results in the calibration (NS 0.86), with a slight reduction of the coefficient in the validation period (NS 0.64). The results suggested that this tool could be applied in future hydrological studies in the region of study. With the consideration that special attention should be given to the historical series used in the calibration and validation of the models. It is important to note that this region has high demands for water resources, primarily for agricultural use. Water demands must also be taken into account in future hydrological simulations. The validation of this methodology led to important contributions to the management of water resources in regions with tropical climates, whose climatological and geological reality resembles the one studied here.

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Section: Introductionmentioning

confidence: 99%

Historical Streamflow Series Analysis Applied to Furnas HPP Reservoir Watershed Using the SWAT Model

Dias

Luz

Medero

et al. 2018

Water

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“…In Brazil, few studies have evaluated the impacts of climate change on hydropower reservoirs [21,51]. Some studies have more generally evaluated the impact on river basins, not directly evaluating hydroelectric reservoirs [52,53].…”

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“…In the South and Southeast regions, impacts will not be significant, so, in these regions, reservoir management would mitigate the effects of climate change. According to the results of an investigation by Ribeiro Júnior et al [51], if climate change scenarios are confirmed, Furnas reservoir levels may decline sharply. The authors proposed a methodology that considers the determination of the length and transgression frequency of level to minimise the conflicts of water use and the impacts on the generation of energy.…”

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confidence: 99%

“…Haguma et al [6] proposed as adaptive operational policies for Manicouagan Reservoir (Canada) the lowering in reservoir water level during winter and raising during spring. For the Furnas HPP reservoir (Brazil), Ribeiro Júnior et al [51] proposed an operative rule that contemplates the time and the cycle of attendance to a certain level of the reservoir, to attend to the generation of energy and to guarantee the sustainability of multiple uses of water for the future climate.…”

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confidence: 99%

“…In Brazil, there is a need for climate and hydrological forecasting to anticipate hydrological risks and to assess the impacts and vulnerability of hydroelectric plants considering changes in climate and adaptation measures [30,51]. However, the influence of the actions taken is greater during the hydroelectric planning and design phases [14].…”

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An Overview of Hydropower Reservoirs in Brazil: Current Situation, Future Perspectives and Impacts of Climate Change

Dias

Luz

Medero

et al. 2018

Water

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Global climate change, related to the greenhouse gases emission, impacts hydroelectric power generation mainly due to the increase in air temperature and changes in the precipitation patterns. As a consequence, it affects basin evapotranspiration process, runoff, sediment transport as well as evaporation of reservoirs. This study analysed the current and future Brazilian context of hydroelectric reservoirs and investigated the potential impacts of climate change on hydropower generation and possible mitigation adjustments, giving relevant examples from around the world. Moreover, it is key to consider other factors that influence the availability of water resources such as: (a) upstream development of reservoirs, mainly the development of agricultural systems, which can contribute to increased water demand; (b) changes in land use, which can have an impact on soil degradation and sediment transport. Hydroelectric dams are a possible alternative to mitigate the impacts of climate change considering that those impacts could generate the need of adaptive actions. The assessment of climate change impacts' projections anticipates possible future scenarios and can assist in strategic planning together with the definition of adaptive operational policies.

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Towards a comprehensive characterization of evidence in synthesis assessments: the climate change impacts on the Brazilian water resources

Amorim

Chaffe

2019

Climatic Change

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Development of a tool for hydroeletric reservoir operation with multiple uses considering effects of climate changes. Case study of Furnas HPP

Cited by 7 publications

References 0 publications

Historical Streamflow Series Analysis Applied to Furnas HPP Reservoir Watershed Using the SWAT Model

Historical Streamflow Series Analysis Applied to Furnas HPP Reservoir Watershed Using the SWAT Model

An Overview of Hydropower Reservoirs in Brazil: Current Situation, Future Perspectives and Impacts of Climate Change

Towards a comprehensive characterization of evidence in synthesis assessments: the climate change impacts on the Brazilian water resources

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