El grup de recerca estudia la qualitat en el subministrament elèctric, és a dir, les desviacions de la tensió i/o el corrent de la seva situació ideal amb forma d'ona sinusoïdal de magnitud i freqüència concretes. Bàsicament, s'estudien tres tipus de pertorbacions en la qualitat de subministrament elèctric: la distorsió harmònica, els sots de tensió, i els desequilibris trifàsics. Així mateix, el grup ha començat a treballar en l'estabilitat i la protecció de xarxes de MT amb generació distribuïda i en xarxes de mitja tensió en corrent continu.

http://futur.upc.edu/QSE

The group studies power quality, i.e. the deviations of voltage and/or current from the ideal situation of a sine wave that is constant in magnitude and frequency. Basically, three types of power quality disturbances are studied: harmonic distortion, voltage sags and three-phase unbalance. Harmonic distortion is produced when voltage and current waveforms are non-sinusoidal but periodic, due to the presence of nonlinear loads in electrical power systems. Voltage sags are short-duration reductions in rms voltage caused by short-circuits in the system. Three-phase unbalance is produced when the three-phase voltages and currents are not symmetrical and/or balanced due to the presence of unbalanced loads in electrical power systems.

http://futur.upc.edu/QSE

The group studies power quality, i.e. the deviations of voltage and/or current from the ideal situation of a sine wave that is constant in magnitude and frequency. Basically, three types of power quality disturbances are studied: harmonic distortion, voltage sags and three-phase unbalance. Harmonic distortion is produced when voltage and current waveforms are non-sinusoidal but periodic, due to the presence of nonlinear loads in electrical power systems. Voltage sags are short-duration reductions in rms voltage caused by short-circuits in the system. Three-phase unbalance is produced when the three-phase voltages and currents are not symmetrical and/or balanced due to the presence of unbalanced loads in electrical power systems.

http://futur.upc.edu/QSE

Enviaments recents

  • Harmonic interaction influence due to current source shunt filters in networks supplying nonlinear loads 

    Sainz Sapera, Luis; Balcells Sendra, Josep (2012)
    Article
    Accés restringit per política de l'editorial
  • Influence of Steinmetz circuit capacitor degradation on series resonance of networks 

    Sainz Sapera, Luis; Caro Huertas, Manuel; Caro, Eduardo (2011-07)
    Article
    Accés restringit per política de l'editorial
  • Electrical resonance instability study in wind power plants 

    Sainz Sapera, Luis; Mesas García, Juan José; Monjo Mur, Lluís; Pedra Durán, Joaquim; Cheah Mañé, Marc (Institute of Electrical and Electronics Engineers (IEEE), 2016)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    Wind power plant stability can be affected by the interaction between the wind turbine and the resonances in the collector grid. This paper presents an electrical resonance instability study applied to wind power plants. The ...
  • Electrical resonance instability study in traction systems 

    Sainz Sapera, Luis; Monjo Mur, Lluís; Mesas García, Juan José; Pedra Durán, Joaquim; Cheah Mañé, Marc (Institute of Electrical and Electronics Engineers (IEEE), 2016)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    Traction system stability can be affected by the interaction between the traction load and resonances in the railway traction grid. This paper presents an electrical resonance instability study applied to traction systems. ...
  • Study of resonances in 1 x 25 kV AC traction systems with external balancing equipment 

    Mesbahi, Nadhir; Monjo Mur, Lluís; Sainz Sapera, Luis (2016-10-01)
    Article
    Accés obert
    AC traction systems are 1 × 25 or 2 × 25 kV/50 Hz single-phase, nonlinear, time-varying loads that can cause power-quality problems, such as unbalanced or distorted voltages. To reduce unbalance, external balancing equipment ...
  • Aeronautical ground lighting system study: field measurements and simulations 

    Vidal, Daniel; Monjo Mur, Lluís; Sainz Sapera, Luis (2016-10-06)
    Article
    Accés obert
    Aeronautical ground lighting (AGL) systems are single-phase series circuits where constant current regulators supply transformers and luminaires. These systems provide visual reference to aircraft during airport operations. ...
  • Optimal fitting of high-frequency cable model parameters by applying evolutionary algorithms 

    Bogarra Rodríguez, Santiago; Riba Ruiz, Jordi-Roger; Sala Caselles, Vicenç; García Espinosa, Antonio (2017-05-01)
    Article
    Accés restringit per política de l'editorial
    Due to the widespread use of electronic power converters, low-voltage high-frequency cable models are being increasingly applied in industry, automobile or aeronautics applications among others. It is known that depending ...
  • Statistical study of personal computer cluster harmonic currents from experimental measurements 

    Mesas García, Juan José; Sainz Sapera, Luis; Sala Pérez, Pau (2015-01-02)
    Article
    Accés obert
    The net harmonic currents generated by a cluster of desktop personal computers are studied statistically. Personal computers (PCs) are single-phase non-linear loads with low individual consumption but significant collective ...
  • Lessons learned in the use of WIRIS quizzes to upgrade Moodle to solve electrical circuits 

    Bogarra Rodríguez, Santiago; Corbalán Fuertes, Montserrat; Font Piera, Antonio; Plaza, Inma; Arcega Solsona, Francisco Javier (2012-01-16)
    Article
    Accés obert
    WIRIS quizzes is an online mathematics tool for educational purposes that upgrades Moodle quizzes, and allows the development of personalized quizzes using random data and conditional instructions. WIRIS quizzes can be ...
  • Study of MVDC system benchmark networks 

    Mesas García, Juan José; Monjo Mur, Lluís; Sainz Sapera, Luis; Pedra Durán, Joaquim (2015)
    Text en actes de congrés
    Accés restringit per política de l'editorial

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