Brazilian Electric System
Mostrando 1-12 de 87 artigos, teses e dissertações.
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1. Enabling design characteristics and budget usefulness
Abstract Purpose This study aims to investigate the influence of budgeting design characteristics on perceived budgeting usefulness, based on the enabling-coercive framework. Design/methodology/approach This paper develops a survey in one large publicly-listed Brazilian company that operates in the electric utility industry. The sample comprises 75 middle
RAUSP Manag. J.. Publicado em: 2021-03
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2. Uma análise comparativa do desempenho de quatro sistemas de umidificação do ar em condições de seca no centro-oeste brasileiro
Resumo Quatro sistemas de umidificação do ar foram examinados e seus desempenhos comparados sob condições de seca do centro-oeste brasileiro. Esses sistemas são umidificador elétrico, bacia com água, toalha úmida e um sistema artesanal feito com telhas cerâmicas especialmente para este trabalho. A avaliação foi realizada entre julho e outubro de 2
Ambient. constr.. Publicado em: 2019-04
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3. Offshore Energy Harvesting of a Marine Floating Pendulum Platform Model
Abstract This work presents an analysis of an ocean wave energy harvesting system. This system is composed of a direct current (DC) power generator attached at the middle-top of a floating platform. A pendulum is connected to the generator’s shaft. It is considered that the ocean waves motion swings the platform in the vertical direction, which transfers e
Lat. Am. j. solids struct.. Publicado em: 18/02/2019
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4. Electric power load in Brazil: view on the long-term forecasting models
Abstract Paper aims This paper aims to discuss how the energy load forecasts used by the System Operator and the main agents of the sector are made, and for what purposes, besides discuss the forecast deviations of the ONS’s and EPE’s models and their consequences and costs to the agents involved. Originality Fill a gap in the Brazilian literature wh
Prod.. Publicado em: 08/10/2018
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5. FUZZY INFERENCE SYSTEMS FOR MULTI-STEP AHEAD DAILY INFLOW FORECASTING
ABSTRACT This paper presents the evaluation of a daily inflow forecasting model using a tool that facilitates the analysis of mathematical models for hydroelectric plants. The model is based on a Fuzzy Inference System. An offline version of the Expectation Maximization algorithm is employed to adjust the model parameters. The tool integrates different inflo
Pesqui. Oper.. Publicado em: 2017-01
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6. DISCOVERING AND LABELLING OF TEMPORAL GRANULARITY PATTERNS IN ELECTRIC POWER DEMAND WITH A BRAZILIAN CASE STUDY
ABSTRACT Clustering is commonly used to group data in order to represent the behaviour of a system as accurately as possible by obtaining patterns and profiles. In this paper, clustering is applied with partitioning-clustering techniques, specifically, Partitioning around Medoids (PAM) to analyse load curves from a city of South-eastern Brazil in São Paulo
Pesqui. Oper.. Publicado em: 2016-12
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7. 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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8. Network modelling of palm biodiesel plants to supply the isolated electric power systems of Pará state
Despite the great advance brought by the National Interconnected System (NIS), which is able to provide clean hydroelectric power to almost all Brazilian customers, there are still cities supplied by power generated from fossil fuel, which are subsidized by taxes, they are called Isolated Electric Power Systems (IEPS). Pará State, that has 34 cities with IE
Prod.. Publicado em: 01/10/2013
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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. Desenvolvimento e demonstração de funcionamento de um sistema híbrido de geração de energia elétrica, com tecnologia nacional composto por um módulo de células a combustível tipo PEMFC e acumulador chumbo ácido / Hybrid system development and operation for an electric power generation with the brazilian technology composed of a PEMFC fuel cell stack and lead acid battery
Este trabalho apresenta a contribuição obtida no desenvolvimento de um Gerador de Eletricidade Híbrido (HYBRIDGEN), com tecnologia nacional, focado nos sistemas de terceira geração de energia elétrica híbrido, composto por um módulo de células a combustível tipo PEMFC, associado a um acumulador chumbo ácido. Mostra-se também a sua capacidade de o
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/06/2012
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11. Thermodynamic analysis of gas turbine cycle using inlet air cooling methods
This work focuses on a comparative analysis among three compressor inlet air cooling techniques using a thermodynamic approach to simulate the gas turbine cycle. Firstly, a Base Case is tested to determine the gas turbine performance without any cooling method. The effect of site altitude on the power output gas turbine even without any cooling technique is
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/02/2012
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12. Otimização da programação da manutenção dos ativos de transmissão do sistema elétrico brasileiro considerando penalidades por indisponibilidade, restrições sistêmicas e logística das equipes técnicas / Optimization of maintenance programming of transmission assets of the brazilian electric power system considering penalties for unavailability, systemic constraints and logistics technical teams
Uma empresa de energia elétrica tem por obrigação garantir a continuidade e a qualidade do serviço prestado. A fim de incentivar a qualidade do serviço, a ANEEL introduziu penalidades nos contratos com as concessionárias de serviços públicos de transmissão de energia elétrica caso as instalações de transmissão sejam desligadas, por acidente, fal
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/10/2011