Abdelmoumene, AbdelkaderBentarzi, Hamid2015-04-262015-04-2620122277-4769https://dspace.univ-boumerdes.dz/handle/123456789/603The study of the transformer in disturbed working mode and the identification of thesedisturbances and their origins have a particular importance for the choice and the dimensioning of thetransformer; and even for the optimization of the exploitation of the electrical energy placed at thedisposal of the consumer.The aim of this paper is to study the behavior of the power transformers following brutal loadvariations by simulating the different electric parameters of the transformer during the increase or thereduction in power required by the receivers.This study permit to identify and analyze the phenomena accompanying the change of operating condition in order to be considered in the selection of transformers characteristics in the eventthat these maneuvers will likely happenenSimulationPower TransformerDisturbed ModeLoads VariationArticle