Time series as an aid to research of traction substation load

This paper presents the continuation of studies on the evaluation of load variation of selected railway traction substations. Later in this article a reference will be made to the adequacy of the adopted model and its parameters in the light of approximation of the mean substation load with high degree polynomials. A need has been identified to continue the research in order to find a more appropriate method of approximation of the characteristics of the analyzed traction loads.