@thesis{thesis, author={Pasaribu Denny Fajri Zharfan and Sukmajati Sigit}, title ={ANALISIS PERBANDINGAN JATUH TEGANGAN AKIBAT TIDAK BEROPERASINYA TRANSFORMATOR GIS 150 KV MINTIN DENGAN SIMULASI MENGGUNAKAN ETAP PADA PENYULANG SLT06 GARDU INDUK 150 KV SELAT KALIMANTAN TENGAH}, year={2023}, url={http://156.67.221.169/5971/}, abstract={Distribution System is an electrical power system that delivers electric energy from the power source to consumers. The non-operation of the 150 kV Mintin GIS (Gas Insulated Switchgear) results in a portion of the network and load being transferred to the 150 kV Selat substation. This network maneuver may cause disturbances, one of which is voltage drop. In this study, the researcher will analyze the voltage drop on the SLT06 feeder before and after the maneuver, as well as efforts to improve the voltage drop using the ETAP simulation program. Based on the ETAP simulation results on several observation buses after the maneuver on SLT06, an increase in the magnitude of voltage drop is observed. The voltage drop at Observation Bus 1021, which was previously 19.29 kV, becomes 18.83 kV. Similarly, at Bus 982, the voltage drop changes from 19.42 kV to 18.96 kV, at Bus 883 from 19.33 kV to 18.87 kV, at Bus 711 from 20.96 kV to 20.8 kV, at Bus 394 from 21.03 kV to 19.54 kV, at Bus 417 from 20.97 kV to 19.36 kV, at Bus 463 from 21 kV to 19.85 kV, at Bus 365 from 20.53 kV to 19.35 kV, and at Bus 373 from 20.53 kV to 19.35 kV. The most optimal solution is to adjust the tap setting on the primary side of the transformer at the observation bus. This adjustment ensures that the secondary voltage meets the SPLN No. 72 Year 1987 standards.} }