Power Flows and TransmissionLossesinthe

Consideration oflosses ofelectric energy inthe transmission networkisimportant forpowersystem operation andcontrol. Development oftheremotecontrol systemintheCroatian National Control centre enabled an accurate calculation oflosses andtheir comparison withthe results measured intheterminal nodes. Additional valuein proposed wayofdetermination oflosses lies inthefact that lossescan be allocated by voltagelevel, linesand transformers. A newwayofcalculating thepercentage of losses isproposed bytheauthors.