Abstract
This study deals with the issue of entering into operation TS 220/110/35/20(10) kV Plat and the associated connection lines 220, 110, 35 and 20(10) kV, which connect the TS in question to the transmission and distribution network. TS Plat is a complex building where the process of transforming electricity into four voltage levels takes place. For this reason, it is necessary to plan the entry into operation of TS Plat in an optimal way, with as little unavailability as possible in the first line of the transmission network, the building in question assumed the position of the most significant power facility in the wider Dubrovnik area.

Full Professor | Department of Power Grids and Substations
Full professor at the Faculty of Electrical Engineering, Mechanical Engineering, and Naval Architecture in Split exeperienced in transmission and distribution networks, renewable energy sources (RES), power system planing and economics

Full Professor | Department of Power Grids and Substations
Researcher and a full professor at the Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture in Split. His research interests include power system optimization and planning, RES integration, electricity market modeling.

Associate Professor | Department of Power Grids and Substations
Researcher and Associate Professor at the Faculty of Electrical Engineering, Mechanical Engineering, and Naval Architecture in Split, where he teaches courses related to engineering economics, power system analysis, power grids and machine learning. His research focus is the application of advanced numerical methods to problems in the analysis and planning of power system operations.