The thesis describes the entire process of preparing the study for the renovation of the transformer station at Ziherlova 4 in Ljubljana. The aim of the renovation is to ensure improved energy efficiency and reliability of the distribution network.
At the beginning, the theoretical background of the power system is presented, including an in-depth explanation of the distribution network, which is composed of various transformer stations consisting of different components.
Understanding each individual component is essential for easier design and the appropriate selection of technical solutions. For this reason, the thesis also includes additional theoretical explanations for each of them.
The study describes the process of a comprehensive renovation of the transformer station, which involves the installation of new medium-voltage supply cables, the replacement of the MV and LV switchgear, the replacement of the transformer, and accompanying construction works. The technical solutions are presented in separate subsections, providing a detailed insight into the challenges of the design process. These subsections include the description of technical characteristics, the drafting process in the ZWCAD software tool, and the justification of the selected technical solution supported by calculations.
The technical solutions of the study were presented to the company’s internal review board, which provided suggestions for improvement. The implementation of these improvement proposals is described in one of the thesis chapters.
Finally, the thesis also includes a cost assessment of the renovation and proposals for further improvement of transformer stations. The prepared study is technically suitable for carrying out the renovation of the transformer station, as it provides verified technical solutions that enable safe operation and are sustainable.
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