The power transformers in the electrical grid are the most expensive tools. Very important
factor of the election the total owning cost, which contains the manufacturing and the
operation costs. To this end, capitalization factors are taken into account by requiring the
manufacturers, the no-load losses and short circuit losses costs. Superconducting materials
can bring new, alternative solutions in transformer business. In my paper I present the
main differences between the common and the superconducting power transformers based
on the relevant articles. I present an application which can find the optimal solution for
common and superconductor transformers based on geometric programming paradigm.
This is a simplified model, so we have to check this validity. I made a routine which can
compute the lighning impulse stresses, so we check the strength of the insulation structure.
This is an especially exciting task in the case of superconducting transformers.