This thesis examines the characteristics and possibilities of using the computer program PSS/E for teaching and research purposes, with a special emphasis on the short-circuit module. PSS/E is a widely used software for calculations and analysis of various network states, and is characterized by high calculation speed and detailed parameterization of network elements, which makes it very accurate in calculations. The PSS/E Xplore 34 version of the program was used in this paper. After the introductory part, a review of short-circuit calculation is given, with an overview of the physical foundations of short-circuit. A description of the symmetrical component method for short-circuit analysis is also given, with an overview of the basic expressions of direct, inverse and zero order for the four main types of short-circuit, as well as formulas in the case of short-circuit through fault impedance. The third chapter follows a general part about the PSS/E program, its areas of use and program modules that are described individually. The fourth chapter describes the short-circuit calculation itself in the PSS/E program. At the beginning, all options in the short circuit calculation module are presented, followed by general program settings, network creation and parameterization of network elements. Parameterization of the most important network elements is described individually. The chapter concludes with a description of setting parameters for short circuit analysis according to the IEC 60909 method. The fifth chapter follows, which provides an example of a three-pole and single-pole short circuit analysis on selected buses of a more complex test network in PSS/E and a comparison of the obtained results with the results of the same analysis calculated in the IEC 60909 – 4 standard.