Proceeding of the Faculty of technical Sciences, Novi Sad

Electrotechnical and Computer Engineering

Vol. 41 No. 02 (2026): Proceedings of the Faculty of Technical Sciences

PRORAČUN STRUJE KRATKOG SPOJA I KOORDINACIJA PREKOSTRUJNE RELEJNE ZAŠTITE U MIKROMREŽAMA

  • Aleksej Žilović
DOI:
https://doi.org/10.24867/34BE10Zilovic
Submitted
February 12, 2026
Published
2026-03-09

Abstract

Microgrids, as local and flexible energy systems capable of operating both grid-connected and islanded, present challenges in analysis due to the presence of distributed energy resources (DER). Specific issues arise in short-circuit current calculation and relay protection coordination, where traditional methods are often insufficient because of bidirectional power flows and inverter-based sources. This paper reviews existing approaches to these problems, analyzes their advantages and limitations, and evaluates the most promising methods through simulations in ETAP, providing insights into their effectiveness and directions for further development of microgrid protection.

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