@thesis{thesis, author={Gultom Novridayanti and Rusli Muhammad}, title ={STUDI DAMPAK HARMONISA PADA JARINGAN TEGANGAN MENENGAH (JTM) PENYULANG CUCUT GARDU INDUK DURI KOSAMBI}, year={2018}, url={http://156.67.221.169/783/}, abstract={There is linier and non linier load in commonly electronic stuff we used.Nonlinier load made bad impact because create harmonics.Harmonics made bad effect to the electric system and made transmission losses become bigger,electronic stuff produce more heat,and also made a mistake when measuring. Harmonics happens when current and voltage wave distorted.Harmonics causes a problem in electric system.In this study will be discuss distribution losses causes harmonics in distribution 20 kV busbar at Cucut feeder located in Duri Kosambi substation.Cucut feeder chosen because in this feeder dominated with priority customer such as factory,office,etc.Priority customer used most non-linier load which made harmonics to the distribution and made THD in the feeder increase.From observation the biggest transmission losses at 06 July 2018 28,26 Kwh/Year and the biggest Harmonics current happen at 08 July 2018 2,23%.} }