Analýza zkratových sil v transformátoru se štěpeným vinutím

Abstract

The diploma thesis deals with the calculation of the magnitude of the forces acting on the split winding of a transformer during a short circuit. The diploma thesis begins with a basic theoretical analysis of what a transformer is and what principles govern its behavior. This is followed by a description of the production of the transformer, in cooperation with a power transformer manufacturing company. The theoretical analysis also includes a description of the functioning of the split winding, the results of measurements of a transformer with a split winding when paired with a photovoltaic power plant. One of the parts is also an extract from the standard describing the calculation of the magnitude of the force acting on a short circuit. Finally, the ANSYS computational program is briefly described and how the practical solution will be carried out in the environment of the given program. The practical part deals with the modeling of a typical transformer that was selected by the cooperating company. Short circuit modeling was performed on the given model, and the result is a verification of the strength and safety of using the split winding on distribution transformers. The conclusion is an evaluation of the feasibility of such a winding and an assessment of its applicability in reality.