The thesis was made in cooperation with Store STEEL. In the near future they will decide for realization of the project because they want to use 35 kV instead of 5 kV system. With reconstruction they will gain extra power to use, which they will need to increase production.
In the project Reconstruction of TP Jeklovlek we had the task of replacing one or more of the existing transformers 5/0,4 kV with a new more powerful transformer 35/0,4 kV with power of 2,5 MVA. To do so, we had to make all the necessary calculations for short-circuits, short-circuit power, thermal and dynamic load of busbars, …, that we need for determining the correct high voltage and low voltage equipment. For drawing we used software called AutoCAD, which we used to draw the current state, state at the time of reconstruction and new state of TP Jeklovlek. I also drew poles schemes for low voltage, high voltage and at the end we drew the connections of the transformer in the side view. We also determined the size of oil pit and preformed calculations for sufficent cooling of transformer.
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