Loss Evaluation of Distribution Transformers in Iran's Electric Power System

Transformers are efficient devices of which the need for increasing their efficiency may not attract any attention at first. However, because of their great number utilized in the distribution section, the energy losses of them is great and the need for improving efficiency in them is increased continuously. This paper is an attempt to calculate the Total Ownership Cost (TOC) of distribution transformers implementing no load loss factor 'A', load loss factor 'B', and the initial cost of each transformer on the basis of year 2004 data in Iran's power grid and Iran-Transfo Co. Therefore, two loss evaluation methods widely used in the country's energy sector are introduced and compared based on accredited yearly data used in the calculations.

کلیدواژه ها:

Distribution Transformers ، Loss evaluation factors ، Transformer losses ، Total ownership costs