Analysis of Imbalance Loads and Losses Based on The Largest Loading by 3 Units of 3 Phase Distribution Transformer

The imbalance load of distribution transformers often occurs.This is due to the fact that time amongst consumers not same, so there a difference in value for each R, S, and T phase. phase causes overload several phases as current emerges neutral transformers. flowing losses. In this research, identification calculation transformer with IEC reference standard which allowed 80% 5% standard, then losses resulting from presence currents were carried out. There are three Hangtuah feeder have exceeded namely DRI 0157, 0241, 0065 calculations taken measurement data form voltage values during daytime nighttime simulated using ETAP 12.6.0 software. symmetrical component method was used obtain based on results simulation. result research occured 0241 has largest percentage an at night. At nighttime, 65% daytime, while 32.2% 29.8%, respectively. greater loading transformer, larger becomes. generated amount 45 A 2.4% 33 1.2% daytime. affects higher it is, bigger appear transformer.