The monitoring of energy consumptions in a urban transportation system

The paper presents a detailed analysis of the energy consumptions recorded in the distribution substations from a public transportation system. One presents the evolution of the energy consumptions at the level of the public transportation system and individually, at the level of transformation substations. One performs an analysis of the power factor at global level and respectively separately, for each transformation substation. There are presented aspects concerning the penalties applied to consumer due to the decreasing of the power factor from its own distribution network. The measuring process used the analogue apparatus and a quality analyzer from the distribution stations.