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- W2606859584 abstract "Any policy concerning the security of electricity supply requires the load to be fully met all the time. The costs for society of electric power outages and shortages can be much higher than the costs incurred to restore the power systems to normal operation, complying with the adopted reliability standards. The growing use of intermittent energy sources to generate electricity in Brazil and in several other countries poses new challenges both for the planning and for the operation of power systems. Large shares of intermittent sources in the electric power generation mix make more difficult to keep tight reliability standards. A substantial incorporation of these sources requires flexibility of the receiving power system, particularly backup capacity. Storage systems are one of the solutions for this problem. The instability associated to electricity generated by intermittent sources can be mitigated by power plants with firm primary energy source and capable of changing quickly their generation, such as plants using gas turbines, or hydro power stations with reservoirs upstream. Brazil has a large experience in building and operating the latter type of plant, which has been, so far, for decades, the cheapest form of generating electric power in the country. Among the several alternatives examined in this study, the multi-objective modeling pointed out hydro power plants, preferably with seasonal, or multi-year storage reservoirs at the same site or upstream, as the more adequate option in Brazil to mitigate the variability, fluctuation and reduced predictability of renewable power sources such as wind and solar power. The other alternatives were also ranked during the modeling." @default.
- W2606859584 created "2017-04-28" @default.
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- W2606859584 date "2014-06-15" @default.
- W2606859584 modified "2023-09-25" @default.
- W2606859584 title "The Electricity Supply Reliability from the Perspective of the Expansion Planning and the Power Systems Operation Regarding the Integration of Intermittent Sources in the Brazilian Energy Matrix" @default.
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