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Artículos de Nelson

  • Retrospectiva 2021

    Fazer parte do mercado de geração solar no Brasil hoje é um privilégio. O Brasil fechou 2021 com um mais de 13 GW…

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Publicaciones

  • Projetos Solares com Trackers: Um Ciclo de Investimento de Muitas Décadas

    Canal Solar Review - October 2021

    This paper describes the impact of digitalization of trackers int he LCOE of large solar plants (available in Portuguese only)

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  • Why is Brazil exporting jobs to Asia?

    O Setor Eletrico

    The article describes the current situation of the nascent solar industry in Brazil, and the key reasons why the jobs it has created so far is tending to move overseas (in Portuguese).

    Otros autores
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  • Application of Three-Phase Vacuum Reclosers for Capacitor Bank Switching

    International Conference on Power Systems Transients (IPST), IEEE, Rio de Janeiro, Brazil

    This paper presents application considerations for three-phase vacuum reclosers when used for capacitor bank switching. To recloser performance, tests were conducted in two laboratories: CEPEL Brazil, and Thomas. A. Edison Test Center USA. The test setup consisted of two capacitor banks: one fixed and the other switched by the recloser. Test methods and results are presented for both. This paper also includes a root cause analysis of overvoltages recorded during testing, and gives…

    This paper presents application considerations for three-phase vacuum reclosers when used for capacitor bank switching. To recloser performance, tests were conducted in two laboratories: CEPEL Brazil, and Thomas. A. Edison Test Center USA. The test setup consisted of two capacitor banks: one fixed and the other switched by the recloser. Test methods and results are presented for both. This paper also includes a root cause analysis of overvoltages recorded during testing, and gives guidelines for capacitor bank design to prevent this type of overvoltage during bank switching.

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  • Fuseless Capacitor Bank Adds Reliability for CERJ in Brazil

    The Line Magazine, Cooper Power Systems, USA

    The article describes the application of a High Voltage Fuseless Switched Capacitor bank in CERJ's network (today called Ampla), an electric power utility in the state of Rio de Janeiro, Brazil.

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  • Electric Power Sector Deregulation in Brazil Increases Overall Reliability, Lowers Cost

    Power Value Magazine, Adams Business Media, USA

    The article comments on the impact of the deregulation of the electric power transmission and distribution sector in Brazil, in the wake of the privatization of large distribution utilities.

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  • Type Tests on Thyristor Valves of the Static Compensators in Manaus and Rio Branco (Eletronorte)

    X SNPTEE (National Symposium of Electric Power Production and Transmission), COPEL, Brazil

    This paper presents the analysis of the results of a type test campaign made on the thyristor valves built for the Static Var Compensators to be installed by Eletronorte in Manaus and Rio Branco Substations. They were built by CGEE Alsthom and are composed by Thyristor Controlled Reactors, Thyristor Switched Reactors and Thyristor Switched Capacitors. The tests were made at Electricité de (EDF) laboratories in March 1987 and October 1988. These units are among the first Static…

    This paper presents the analysis of the results of a type test campaign made on the thyristor valves built for the Static Var Compensators to be installed by Eletronorte in Manaus and Rio Branco Substations. They were built by CGEE Alsthom and are composed by Thyristor Controlled Reactors, Thyristor Switched Reactors and Thyristor Switched Capacitors. The tests were made at Electricité de (EDF) laboratories in March 1987 and October 1988. These units are among the first Static Compensators to be installed in Brazil. The paper is available in Portuguese only.

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  • Contribution of Static Var Compensators for System Stability

    VIII SNPTEE (National Symposium of Electric Power Production and Transmission), CESP, Brazil

    This paper brings an overview of electric power systems stability basic concepts and the advantages of using shunt Static Var Compensators to improve stability and increase transmission capacity. The paper is available in Portuguese only.

    Otros autores
    • Antonio Silva
    • Ilan Peled
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  • Experience with the Application of Thyristor Controlled Static Var Systems (SVS) in Transmission Systems

    VII SNPTEE (National Symposium of Electric Power Production and Transmission), ELETRONORTE, Brazil

    The paper comments on the experience accumulated at the time with different SVS types (Switched Capacitors, Controlled Reactors, etc.). Mentions are made to SVSs installed at AEP's Beaver Creek Substation in US, Hasle Substation in the Nordic interconnected system, and another one at the Swedish State Power Board's Hagby Substation in Stockholm, Sweden. The paper is available in Portuguese only

    Otros autores
    • Antonio Silva
    • Alexander Wilk
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