Brazilian Electrical System
Mostrando 1-12 de 57 artigos, teses e dissertações.
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1. Strategies used to control the costs of underground ventilation in some Brazilian mines
Abstract In an underground mine, the ventilation is responsible for 25% to 50% of its electrical energy consumption. In countries such as South Africa, United States and Canada researchers have started to achieve a significant reduction in energy consumption without neglecting aspects of the quantity and quality of air required for the best performance of th
REM, Int. Eng. J.. Publicado em: 2020-12
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2. Efficiency of electricity distribution companies
Abstract Purpose After assessing papers on efficiency, most of the studies available are focused on the analysis of efficiency measures, without providing a deep discussion of the factors that determine efficiency. This study aims to evaluate the efficiency of Brazilian electricity distribution companies based on a structural model that enables the identifi
RAUSP Manag. J.. Publicado em: 2020-06
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3. Integration of Renewable Energy Sources to Operate in Microgrids in Rural Zones in Brazil
Abstract In a world where technology is even more essential, quality and reliability of electrical system are fundamental. In Brazil, country where most of the energy is produced thought power plants, the existing distribution network is overwhelmed and the needs for the consolidation of distributed generation is growing. Wind and Solar power generation fro
Braz. arch. biol. technol.. Publicado em: 25/11/2019
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4. Technical and economic viability of the installation of a hybrid solar-wind generation system in a Brazilian industry
Abstract The demand for electricity is growing worldwide. At the same time, the non-renewable natural resources that account for a large proportion of the global energy matrix are rapidly depleting, which will pose a major challenge in the near future. Therefore, micro-grid models that use renewable energy sources, such as solar and wind, are rapidly develo
Braz. arch. biol. technol.. Publicado em: 25/11/2019
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5. Morphometric responses and tolerance of pomegranate seedlings irrigated with saline water
RESUMO As informações sobre a formação de mudas e crescimento inicial da romãzeira irrigada com água salina são escassas nas condições do semiárido brasileiro. Com isso, objetivou-se estudar o efeito dos níveis de salinidade da água de irrigação sobre o crescimento e a tolerância de mudas de romãzeiras. O experimento foi conduzido em casa de
Rev. bras. eng. agríc. ambient.. Publicado em: 06/05/2019
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6. Study of the Performance Reduction Due to the Dirt Effect in the Photovoltaic Systems of UTFPR - Curitiba
ABSTRACT Photovoltaic systems have been consolidated in the global energy scenario as an option of low environmental impact energy generation, high reliability and great applicability in urban centers, acting like energy generators near the point of consumption. The Federal University of Technology of Paraná (UTFPR), with the proposal of testing the perform
Braz. arch. biol. technol.. Publicado em: 29/10/2018
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7. Genesis and Classification of Sodic Soils in the Northern Pantanal
ABSTRACT The simultaneous occurrence of high levels of exchangeable sodium percentage (ESP) and alkalinity in soils imposes restrictions on plant development and affects physical properties such as porosity, bulk density, permeability, and hydraulic conductivity. Although sodic soils are frequent in the flood plain of the São Lourenço River, northern Panta
Rev. Bras. Ciênc. Solo. Publicado em: 02/10/2017
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8. Comparative study of energy costs in irrigation according to the new brazilian electricity tariff model
ABSTRACT The tariff flags on Brazil came into force in January 2015, applied to all electrical distribution agents of the national interconnected system (SIN) and all final consumers are being charged for this new model. Given this, the cost of electricity in irrigation suffered representative additions involving searches of alternatives, such as the use of
Eng. Agríc.. Publicado em: 2016-10
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9. ESTUDO DE UM REATOR SOLAR HÍBRIDO PARA CURA ACELERADA DO CONCRETO EM ÁGUA MORNA. / STUDY OF A HYBRID SOLAR REACTOR FOR ACCELERATED CURING OF CONCRETE IN WARM WATER.
The Portland cement concrete material is the most consumed after the water worldwide due to their versatility molding, strength and durability as a structural material. The curing is the procedure that aims to keep the concrete saturated with water in their early ages and it is essential to ensure the reactions of cement hydration, promoting its consolidatio
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 01/11/2012
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10. Contribuições para o aplicativo APR: novos limites de suportabilidade, perturbações via medições e sistematização no processo da configuração da rede elétrica
The refunding requests coupled with the standard ANEEL 360/2009, which has contributed to the standard 61/2004, are considered the main Brazilian guidelines to cope with the subject of consumer reimbursement due to electrical appliances damages. Indeed, the subject is growing in valuable due to its social relevance, the commercial relationship between suppli
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/08/2012
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11. Alternativas de captação de água visando ao aumento da oferta hídrica na Agrovila Mambaí- GO.
ABSTRACT: The water supply for human use in Brazilian rural areas of the Cerrado region depends greatly on local natural water resources. In the community of smallholder farmers, know as Agrovila Mambaí, located in Mambaí, GO, has been undergoing this type of situation. The objective of this work has been developed aiming at presenting technical alternativ
Planaltina. Publicado em: 2011
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12. STOCHASTIC DYNAMIC PROGRAMMING AND CONVEX HULL ALGORITHM IN THE HYDROTHERMAL SYSTEMS OPERATION PLANNING / PROGRAMAÇÃO DINÂMICA ESTOCÁSTICA E ALGORITMO DE FECHOS CONVEXOS NO PLANEJAMENTO DA OPERAÇÃO DE SISTEMAS HIDROTÉRMICOS
This thesis presents a new approach for the expected-cost-to-go functions modeling used in the stochastic dynamic programming (SDP) algorithm. The proposed technique is applied to the long-term operation planning of electrical power systems. Using state space discretization, the convex hull algorithm is used for constructing a series of hyperplanes that comp
Publicado em: 2010