In this paper, we propose a methodology to classify Power Quality (PQ) in distribution systems based on voltage sags. The methodology uses the KDD process (Knowledge Discovery in Databases) in order to establish a quality level to be printed in labels. The methodology was applied to feeders on a substation located in Curitiba, Paraná, Brazil, considering attributes such as sag length (remnant v...

In this paper a new topology for Dynamic Voltage Restorer (DVR) with high frequency link is proposed. This topology is able to compensate different types of voltage disturbances such as voltage sag, voltage swell and voltage harmonics. According to the obtained equations, this topology operates as a controllable current source to charge the series capacitor. Due to using High Frequency Transfor...

Energy is one of the most prominent factors in shaping the civilization of today. Under consideration for nonconventional energy source wind energy has turned out to be a leading source of energy. In recent years there has been a significant global commitment to develop a clean and economical alternative sustainable power source especially from wind. In this field of development wound rotor ind...

Solid state power converters are widely used in applications such as Adjustable speed drives (ASD), Static power supplies. Hence it affects the power quality (i.e.) related to non-standard voltage, current and frequency at the load side. In this paper an attempts has been to analyses the role of D-Statcom (Distribution static compensator) and located at load side in the distribution system, whi...