Blar i SINTEF Open på forfatter "Portillo, Alvaro"
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A Damping Factor-Based White-Box Transformer Model for Network Studies
Gustavsen, Bjørn Alfred; Portillo, Alvaro (Journal article; Peer reviewed, 2018)Transformer manufacturers make routine use of white-box detailed transformer models for ensuring that the transformer will pass the lightning impulse test. For use in general simulation studies, the model should additionally ... -
High-Frequency Resonant Overvoltages in Transformer Regulating Winding Caused by Ground Fault Initiation on Feeding Cable
Gustavsen, Bjørn Alfred; Portillo, Alvaro; Ronchi, Rodrigo; Mjelve, Asgeir (Journal article; Peer reviewed, 2018)Transformer terminal equivalents obtained via admittance measurements are suitable for simulating high-frequency transient interaction between the transformer and the network. This paper augments the terminal equivalent ... -
Measurements for validation of manufacturer’s white-box transformer models
Gustavsen, Bjørn Alfred; Portillo, Alvaro; Ronchi, Rodrigo; Mjelve, Asgeir (Journal article; Peer reviewed, 2017) -
Time Domain Implementation of Damping FactorWhite-Box Transformer Model for Inclusion in EMT Simulation Programs
Gustavsen, Bjørn Alfred; Martin, Cesar; Portillo, Alvaro (Journal article; Peer reviewed, 2019)White-box detailed transformer models are used by manufacturers for predicting internal overvoltages in transformer windings during the lightning impulse test. One such model is the d-factor model which is based on a ...