Characterizing and normalizing the effect of fluctuating loads
Voltage fluctuations and flicker - Assessment and mitigation (part 1)
Article REF: D4315 V2
Characterizing and normalizing the effect of fluctuating loads
Voltage fluctuations and flicker - Assessment and mitigation (part 1)

Authors : JACQUES COURAULT, Guillaume de PREVILLE, Jean-Louis SANHET

Publication date: November 10, 2001, Review date: February 2, 2022 | Lire en français

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1. Characterizing and normalizing the effect of fluctuating loads

1.1 Characterization of fluctuations

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1.1.1 Observed phenomenon

Fluctuating loads are loads which, by their very nature, operate at variable power: for example, a press, a discontinuous rolling mill, a spot welder, an arc furnace and, in general, any process which is cyclical or has random internal variables. The energy conversion process, for its part, can attenuate or amplify the power modulation phenomenon by the way in which the reactive power is in turn modulated. The modulation, at varying frequencies, of active...

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