934 research outputs found
Evaluating Distributed Time-Varying Generation Through a Multiobjective Index
In the last decade, distributed generation, with its various technologies, has increased its presence in the energy mix presenting distribution networks with challenges in terms of evaluating the technical impacts that require a wide range of network operational effects to be qualified and quantified. The inherent time-varying behavior of demand and distributed generation (particularly when renewable sources are used), need to be taken into account since considering critical scenarios of loading and generation may mask the impacts. One means of dealing with such complexity is through the use of indices that indicate the benefit or otherwise of connections at a given location and for a given horizon. This paper presents a multiobjective performance index for distribution networks with time-varying distributed generation which consider a number of technical issues. The approach has been applied to a medium voltage distribution network considering hourly demand and wind speeds. Results show that this proposal has a better response to the natural behavior of loads and generation than solely considering a single operation scenario
Evaluating distributed generation impacts with a multiobjective index
Evaluating the technical impacts associated with connecting distributed generation to distribution networks is a complex activity requiring a wide range of network operational and security effects to be qualified and quantified. One means of dealing with such complexity is through the use of indices that indicate the benefit or otherwise of connections at a given location and which could be used to shape the nature of the contract between the utility and distributed generator. This paper presents a multiobjective performance index for distribution networks with distributed generation which considers a wide range of technical issues. Distributed generation is extensively located and sized within the IEEE-34 test feeder, wherein the multiobjective performance index is computed for each configuration. The results are presented and discussed
Consórcio de milho safrinha com Brachiaria ruziziensis em diferentes populações de plantas.
Physical-chemical characterization of integral grape juices elaborated with cv. Concord in the Sub-middle São Francisco Valley.
The objective of this study was to evaluate the physical-chemical characteristics of grape juices elaborated with cv. Concord, grafted onto IAC 572, cultivated on pergola, and irrigated by drip, planted a partner enterprise, in one season in the São Francisco Valley
Physical-chemical characterization of integral grape juices elaborated with cv. Concord in the Sub-middle São Francisco Valley.
The objective of this study was to evaluate the physical-chemical characteristics of grape juices elaborated with cv. Concord, grafted onto IAC 572, cultivated on pergola, and irrigated by drip, planted a partner enterprise, in one season in the São Francisco Valley
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