ANALYSIS OF TRANSFORMER MEASUREMENT AND PROTECTION SYSTEM IN ŠTORE PUMPING STATION II

Namen diplomske naloge je predstaviti merilni in zaščitni sistem elektroenergetskega transformatorja v industriji. Opisati nastavitve in možnosti merilnih in zaščitnih elementov, skupaj z ostalo srednje in nizko napetostno opremo z elektroenergetskim suhim transformatorjem. Omenja pomebnost pravilnega delovanja zaščitnih naprav pri uporabi paralelno vezanih transformatorjev. Preverja selektivnost delovanja nadtokovne zaščite transformatorja in njegovih porabnikov. Z uporabo programskega orodja Matlab Simulink je izvedena simulacija kratkega stika paralelno vezanih tranformatorjev. Dobljeni rezultati časovnih potekov tokov in napetosti so nato analizirani.The purpose of this assignment is to present how the protection and measuring system of a power transformer is used in the industry. It describes the settings and the options of the measuring and protective elements along with other medium and low voltage with a power dry transformer. It mentions the importance of the proper protection of two parallel transformers. It verifies the selectivity of the transformer overcurrent protection and its power consumers. With the help of software tool Matlab Simulink, is created a simulation of short circuit on the two parallel transformers. The results of the voltage and currents are then analysed