Analysis of electric power's parameters in supplying of railway electric traction systems

In this work is presenting the study of the electric current's parameters and characteristics, obtained by means of an electric power's quality analyzer. The measurements were made into an AC railway electric traction substation of 27 kV, during more hours, being registered momentary and average values. The data acquired with the electric power's quality analyzer were registered into a computing system, for their further analysis. In order to achieve the adaption between the analyzer's input measures and the traction line's values, the measurements were made in the secondaries of the voltage and current transformers existent in the traction substation.