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The paper analyses the power quality in power substations from residential and educational buildings (campus university). Measurements were performed in two days, one in a weekday, and one in a weekend, to highlight differences. Measurements in the power substation were performed using power quality analyser. Electrical measurements were performed for voltages and currents spectra, Fresnel diagrams,...
This work presents a general filtering and unbalance compensation scheme for electric traction systems. The proposed method uses an active filter controlled with the instantaneous active and reactive power, to reduce the harmonic current distortion and the negative sequence obtained by the system under unbalanced operation in steady state. The proposed filter is evaluated using open delta (V-V) and...
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