Determination of Electric Power Losses in Distribution Systems

The article presents an original methodology to evaluate of the power losses in electric distribution systems, applicable to monophase systems with return by earth - MSRE. The methodology considers the losses composed by two components, technical and commercial. Through the developed methodology the average technical losses associated to the supply unit are calculated, for a period T. The calculation is obtained through the mean load and loss factors. The commercial losses, for the considered period, are appraised based on calculations developed, inside its own methodological procedure. Based on results of a real case, where 62.6% of global losses were verified, the article concludes that the methodology is consistent, it also recommends the adoption of some priority actions