Analysis of impact installation of Distributed Generation in a 20 kV distribution system

This study aims to determine the effect of the installation of Distributed Generation (DG) on the value of voltage drop and real power losses in the distribution network of 20 kV Gunung Dukuh feeder (GNDH). In addition, this study also aims to determine the optimal distribution location of Distributed Generation (DG) to get the best voltage drop and power losses. The background of this research is that the voltage drops and power losses are common in GNDH feeders at PT. PLN (Persero) Cimahi area. The voltage value on the GNDH feeder is sometimes still below the standards set by PLN. This will certainly cause the load not to work optimally and can even cause damage to the electricity load and in the end will be very detrimental to all parties, both the electricity consumer and PT. PLN (Persero). Based on the characteristics of DG directly connected to the distribution system, there is no need for a transmission system to deliver electricity. This is certainly very influential on the decrease in the voltage drop and the value of power losses. The method used in this research is power flow simulation using ETAP 16.0.0 software and analysis after getting simulation results. The findings of this study are the simulation results prove that the installation of DG affects the decrease in voltage drop and power losses in GNDH feeder, before installation of DG the voltage drop in GNDH is 10.1% and the value of power losses before DG installation is amounted to 446.5 kW. After the DG installation simulation, the optimal installation of two DGs is found on the TM 36 bus and the TM 42 bus with a decrease in the voltage drop to 1.18% and a power loss value to 117.2 kW.