Návrh a nastavení elektrických ochran pro rozvodnu R22 kV Ropice

Abstract

This diploma work deals with description of electrical protection theoretically and solves an adjustment of switching station protection. There is a theoretic analysis of protection that is focus in transmission line protection and transformer protection in the first part. The second part of diploma work deals with calculation of short-circuit ratios in power system. In the third part there is description of transformers, 110 kV and 22 kV switching station and switching station protection in Ropice. Subsequently the calculation is fulfilled for the adjustment with description. The overcurrent release, short-circuit current release, earth fault protection and protection against current unbalance are adjusted.