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News Article | November 10, 2016
Site: www.prnewswire.com

CURITIBA, Brasil, 10 de novembro de 2016 /PRNewswire/ -- A Companhia Paranaense de Energia - Copel (BM&FBovespa: CPLE3, CPLE5, CPLE6 / NYSE: ELPVY, ELP / Latibex: XCOP), empresa que gera, transmite, distribui e comercializa energia, anunciou os resultados do terceiro trimestre de...


Andriolo R.F.,Federal University of Paraná | Fernandes T.S.P.,Federal University of Paraná | Bessa M.R.,Federal University of Paraná | Bloot M.L.,Companhia Paranaense de Energia
Journal of Control, Automation and Electrical Systems | Year: 2015

The operation planning of the Brazilian power system is a great challenge due to its size of continental dimensions, large seasonal variations, and predominantly hydroelectric nature. Its operation requires careful planning to reconcile conflicting goals such as spill minimization during the rainy season, and minimization of generation deficits during the dry season, i.e., operation risk minimization. The optimization models for hydrothermal systems currently used to operate large systems do not include the electric network when determining the energy goals. This work aims at modeling a hydrothermal dispatch problem by means of genetic algorithms. The electrical constraints are included by an optimal power flow, which is solved monthly over the planning horizon. The fitness function is composed of criteria that look for using the reservoirs as much as possible during the rainy season, thus, minimizing spills and production costs and, at the same time, catering for the load and limits of energy exchange between the subsystems. The methodology was tested using the 33-bus system. © 2015, Brazilian Society for Automatics--SBA.


Wilhelm H.M.,Diagno Materiais e Meio Ambiente | Franch V.,LACTEC Institute of Technology for Development | Tulio L.,LACTEC Institute of Technology for Development | Franch A.F.,Companhia Paranaense de Energia
IEEE Transactions on Dielectrics and Electrical Insulation | Year: 2015

The main objective of this study was to evaluate the effect of transformer construction materials, such as kraft insulation paper, varnish, core steel and gasket materials (rubber), on the physicochemical properties of natural ester-based insulating oils (NEIs) and mineral insulating oil (MIO) under heating. We evaluated two NEIs, one formulated with soya oil (Envirotemp FR3) and other with corn oil (Biovolt A). The test specimens were placed in a 1-L jar with 800 mL of insulating oil and then the jar was placed in an oven at 100 °C for 716 h. The insulating fluids were analyzed before and after the heating tests by physicochemical analyses, such as kinematic viscosity, acid number (or neutralization number), dissipation factor and interfacial tension for MIO. Properties of the aged reference and the test specimen oils for a standard testing method for compatibility of construction materials with NEIs are proposed. The only parameter that showed variation after the NEI compatibility testing with different materials was the dissipation factor at 90 °C. The results show that besides compatibility and aging tests, mechanical tests for the gasket or seal materials should also be performed to conclude whether a material is suitable for construction of transformers insulated with NEIs. © 1994-2012 IEEE.


Unsihuay Vila C.,Federal University of Paraná | Perondi G.,Companhia Paranaense de Energia
IEEE Latin America Transactions | Year: 2016

Brazilian regulatory model of electricity imposes that distribution companies should acquire all your energy market related to captive customers on, regulated auctions, and distributed generation, whose energy is traded with public calls. An energy market forecast is designed by the utilities and this forecast has to be a 100% covered with contracts agreed from regulated trades. The challenge of utilities is to forecast their own energy market five years in advance, which brings to the process a high level of uncertainty. This paper presents a methodology for planning the purchase of electricity by distribution agents in the Brazilian regulated contracting environment (ACR). The contracting strategy covers a horizon of 5 years, with monthly discretization and the goal is to minimize the total cost of energy procurement strategy. The proposed model considers the current regulatory Brazilian Laws of energy contracting by distribution companies, i.e. energy purchases from auctions in the regulated environment, distributed generation-GD, Compensation Mechanism Surplus and Deficit-MCSD and short-term market. The uncertainties of future electric consumption are modeled following a fuzzy approach. Thus, the formulation if proposed model is a fuzzy non-linear programming problem. Results show the importance of the short-term modeling and the consideration of MCSD and GD in the Energy Purchase Strategy on the Brazilian Regulated Electricity Market. © 2016 IEEE.


Wilhelm H.M.,LACTEC Institute of Technology for Development | Tulio L.,LACTEC Institute of Technology for Development | Jasinski R.,Companhia Paranaense de Energia | Almeida G.,Companhia Paranaense de Energia
IEEE Transactions on Dielectrics and Electrical Insulation | Year: 2011

In this work, the degradation process of natural ester-based insulating fluids was evaluated through laboratory aging tests. Two distinct aging methodologies were used: natural ester-based insulating fluids were placed in sealed flasks at 120 0C in the presence of Kraft insulating paper containing about 1.5 and 5 wt% moisture; and natural ester-based insulating fluids were aged with and without Kraft insulating paper containing 1.5 wt% moisture in an open system, adding oxygen at different temperatures. The results indicate that viscosity, acid number and dissipation factor are important markers to consider in monitoring service-aged natural ester fluids. © 2006 IEEE.


Pereira J.A.,Companhia Paranaense de Energia | Junior O.C.,Pontifical Catholic University of Parana
Applied Mechanics and Materials | Year: 2014

This paper, through a wide approach of Product Development Process (PDP) renowned methodologies, proposes a conceptual model to serve as a guide in the elaboration, management and implementation of research and development (R&D) projects classified by the R&D Program of Brazilian Electricity Sector which is regulated by the Brazilian Electricity Regulatory Agency (ANEEL). Product development methodologies can be applied to narrow the relationship between academy and industry ensuring results directed to the product, with reduction of costs and development time better suited to the customers needs, fulfilling integrally, at the same time, the Innovation Chain proposed by ANEEL R&D Program in the achievement of new technologies for the electricity sector. © (2014) Trans Tech Publications, Switzerland.


Pereira J.A.,Companhia Paranaense de Energia | Junior O.C.,Pontifical Catholic University of Parana
Advanced Concurrent Engineering | Year: 2013

This article addresses the concepts of multidisciplinary projects focusing on the technological innovation recommended by the R&D Program of the Agência Nacional de Energia Elétrica - ANEEL, under which are subject all the Brazilian electrical utilities through the federal law 9.991/2000. The R&D Program provides the directions for the electrical energy research and development offering the criteria for the elaboration of the proposals of researches projects. Until recently the product development processes were not part of the electrical utility routine, what it becomes clear that it was necessary more knowledge about the whole research and development process what has showed the lack of the adequate methodological methods. This work presents the main points of a new approach as well as the study of the product development tools applied in the elaboration of the projects proposals. Therefore it is expected that this new approach brings a better R&D projects quality and consequently a significant reduction of the time, development and reengineering costs. © Springer-Verlag London 2013.


Wilhelm H.M.,LACTEC Institute of Technology for Development | Stocco M.B.C.,LACTEC Institute of Technology for Development | Tulio L.,LACTEC Institute of Technology for Development | Uhren W.,Companhia Paranaense de Energia | Batista S.G.,Companhia Paranaense de Energia
IEEE Transactions on Dielectrics and Electrical Insulation | Year: 2013

Three types of edible natural ester oils (soya, rice and sunflower) were aged with and without antioxidant additives. The properties of these aged oils were analyzed in comparison with a commercial natural ester insulating product (Biovolt A). Dissolved gases in these aged oils under thermal and electrical stress were also investigated. © 1994-2012 IEEE.


Wilhelm H.M.,LACTEC Institute of Technology for Development | Stocco G.B.,LACTEC Institute of Technology for Development | Batista Jr. S.G.,Companhia Paranaense de Energia
IEEE Transactions on Dielectrics and Electrical Insulation | Year: 2013

The degradation of in-service natural ester-based insulating fluid could result in oil viscosity, acidity and dissipation factor increases. In this work, natural ester-based insulating fluid samples aged in the laboratory and in-service (collected from a Recloser) were reclaimed with different adsorbent materials. All the tested samples showed some properties above the provisional limit for triggering prompt additional investigation suggested by the IEEE guide for in-service natural ester fluids, such as viscosity increase > 10% from value at time of initial energization, acid number > 0.3 mg KOH/g or dissipation factor at 25 0C > 3%. The reclamation process was accomplished by the use of two methods: 1) by mechanical agitation of the aged oil in the presence of several adsorbents and 2) by percolation of the aged oil through the adsorbent material. The reclaimed fluids were monitored by evaluation of viscosity, acid number and dissipation factor and the results were compared with unused oil. The results showed that viscosity is the main criterion to evaluate whether or not in-service natural ester-based insulating fluid can be reclaimed. © 1994-2012 IEEE.


News Article | November 10, 2016
Site: www.prnewswire.com

CURITIBA, Brazil, Nov. 10, 2016 /PRNewswire/ -- Companhia Paranaense de Energia - Copel (NYSE: ELPVY, ELP / Latibex: XCOP / BM&FBovespa: CPLE3, CPLE5, CPLE6), a company that generates, transmits, distributes and sells power, announced its results for the third quarter of 2016....

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