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The influence of neutral treatment system type on the efficiency / performance of the MV networks

The paper aims to presents an analysis of the performance and efficiency of the neutral system treatment type from an electrical power substation 110kV / MV which belongs to Energy Distribution Oltenia DEO depending on the level of active and reactive power losses from each case. All these were analyzed in two major conditions in terms of operating mode, namely: in normal operating mode and in fault mode, for two situations concerning the neutral treatment type: first when the neutral treatment system is done by an suppresion coil connected straight to the internal services power transformer and the second one when the neutral treatment is realized by a resistor connected to the system via a special equipment used to do an artificial neutral point. As a conclusion it is found that the type of the neutral system treatment is very important from the technical point of view and in the same time it directly influence also the cost efficiency of the power distribution by the level power losses.