Návrh elektrické části distribuční transformovny 110/22 kV

Abstract

This bachelor’s thesis deals with the design of the electrical power part of a 110/22 kV distribution substation in accordance with relevant Czech standards (ČSN) and current engineering practice. The theoretical part describes the function of the substation within the distribution system, the characteristics of 110 kV and 22 kV substations, and the issue of short-circuit currents. The practical part includes the calculation of short-circuit conditions according to ČSN EN 60909-0 ed. 2 and the design of primary equipment, including busbars and switchyard arrangement. The substation is designed with two transformers rated at 40 MVA, taking into account future development of the area. The design also reflects current legislative requirements, particularly restrictions on the use of SF6 gas. The resulting solution meets the requirements regarding the effects of short-circuit currents and represents a model design corresponding to real operating conditions.