Konfigurace směrové naproudové ochrany v moderním IED

Abstract

This bachelor thesis deals with the issue of directional overcurrent protection in a power system, focusing on the IED REX640. The theoretical part describes the basic principles and applications of overcurrent protection. The practical part focuses on the physical description of the protection device and its configuration in the PCM600 software environment.

Laboratory measurements were also conducted. The aim of these measurements was to verify the correct operation of directional overcurrent protection under simulated fault conditions, as well as to observe the phase shift between line voltage and phase current on the LHMI touch display. Based on the performed measurements, the correct functionality of the designed configuration and its ability to reliably respond to fault conditions were confirmed.