Recursos de colección

Universidad Nacional de La Plata (75.687 recursos)

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Trabajos publicados en 2008

Mostrando recursos 1 - 6 de 6

  1. Comparison of active filters topologies in medium voltage distribution power systems

    Corasaniti, Víctor Fabián; Barbieri, María Beatriz; Arnera, Patricia L.; Valla, María Inés
    This paper presents the design of different topologies of active power filters to compensate reactive power and harmonics in the medium voltage level of a distribution power system. One pure active filter and two hybrid topologies, are implemented. A pure active compensation is obtained with a Shunt Active Power Filter (SAPF). The shunt combination of SAPF and passive filter, form one of the hybrid topologies implemented, named Shunt Hybrid Active Power Filter (SHAPF). The other hybrid topology, called Hybrid Shunt Active Power Filter (HSAPF), connects the active filter in series with two shunt passive filters. Simulation for different load demands...

  2. Power quality measurements in a steel industry with electric arc furnaces

    Issouribehere, Pedro; Barbero, Juan Carlos; Issouribehere, Fernando; Barbera, Gustavo Ariel
    Many loads connected to electric power systems can cause power quality problems at all voltage levels and for very different power ratings due to their unbalanced and non-linear behavior characteristics. This paper describes the aspects of power quality at the point of common coupling (PCC) where an arc furnace for steel melting with alternating current is connected. By measurements of Flicker, harmonics content in voltage and current, active and reactive power and power factor, the preservation of the reference levels for the supply voltage and emission limits for the furnace as a customer are evaluated. The evaluation of power quality of contemporary...

  3. Power quality measurements and mitigation of disturbances due to PWM AC drives

    Issouribehere, Pedro; Barbera, Gustavo Ariel; Issouribehere, Fernando; Mayer, Hugo Gastón
    Variable speed AC drives are finding their place in all types of industrial and commercial loads. One important application of these drives is in process control, controlling the speed of fans, compressors, pumps and blowers. However, there are many line (source) design parameters frequently overlooked. A pipeline for transporting synthetic crude oil was installed in Argentina and variable frequency drives (VFD) were employed to control the centrifugal pumps, in order to provide flow and pressure control. During the commissioning and start-up program, the IITREE-LAT performed Power Quality measurements and EMC studies in the petroleum process plants. The first part of the paper...

  4. Hydraulic transients in hydropower plant

    Agüero, Jorge Luis; Arnera, Patricia L.; Barbieri, María Beatriz; Beroqui, Mario César; Bianchi Lastra, Raúl E.; Mastronardi, Jorge L.
    Futaleufú hydropower plant has 4 Francis turbines rated 118 MW and it is connected to the power system by 2x330 kV lines. Studies carried out in the past did not predict the instable operation of Futaleufú after a 330 kV line fault, when some Futaleufú turbines are automatically disconnected as a consequence of the faulted line tripping. Load rejection caused by disconnected turbines generate large transients in the remaining turbines due to hydraulic coupling through the common conduits. Then, to improve related models and, therefore, to improve studies results of such a line fault it was necessary to make several...

  5. Topologías de filtros activos en el nivel de media tensión

    Corasaniti, Víctor Fabián; Barbieri, María Beatriz; Arnera, Patricia L.; Valla, María Inés
    Este trabajo presenta el diseño de diferentes topologías de filtros activos de potencia para compensar potencia reactiva y armónicas en el nivel de media tensión de un sistema de distribución de energía eléctrica. Se implementan, una topología activa pura obtenida con un Filtro Activo de Potencia Shunt (FAPS). La combinación del FAPS y un filtro pasivo conectados en paralelo forman una de las topologías hibridas implementadas, denominada Filtro Activo de Potencia Shunt Hibrido (FAPSH). La otra topología hibrida, denominada Filtro Activo de Potencia Hibrido Shunt (FAPHS), conecta al filtro activo en serie con dos filtros pasivos. Se realizan simulaciones para...

  6. Tool for the control management of electric and magnetic fields of electrical companies

    Arnera, Patricia L.; Barbieri, María Beatriz; Turco, Joaquín; Messina, Juan; Postiglioni, Osvaldo
    The use of electricity involves a wide range of activities that, because of its diversity, characteristics and relative importance causes different environmental impacts during the extraction, processing, transport and consuming activities. It is the role of the government to elaborate the rules for the incorporation of environmental aspects in the different segments of the market for different electrical energy sources and in all the stages of the process, from the initial evaluation to the construction and exploitation phases. Among the environmental key aspects to considerate, are the electric and magnetic fields, in which society has taken special interest as they...

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