PERHITUNGAN JATUH TEGANGAN PADA PENYULANG BELIMBING YANG DISUPLAI DARI GARDU INDUK BOOM BARU DENGAN BANTUAN SOFTWARE ETAP

In electric power distribution always occur drop voltage and losses of electrical power, it is caused by several factors such as, line resistance, line current, power factor (Cos φ), and the central load location which is far from the substation. Thus, in the distribution of electricity through distribution line will having a drop voltage along the line which reduces the supply of electrical energy distributed to the central load location and make the electrical energy distributed to the consumers reduced or in other word the electrical energy distributed to the consumers is different from the energy that has been sent. Drop voltage in distribution network can not be eliminated completely, because of the equipments which is used in distribution system may not have an efficiency 100 % but one thing that we should keep in mind is whether the drop voltage is still in the tolerance limit or not. This final report discusses the drop voltage calculations in the feeder by using ETAP software. This final report was being done through a case study at Boom Baru Substation especially in Belimbing Feeder. The results of calculation and simulation that had been done by ETAP 12.6 shows that the drop voltage which occurs is 0,84 on day peak burden and 0,63 on night peak burden. The drop voltage that occured in Belimbing Feeder is still in the limit allowed by PLN on SPLN 72:1987, amounting to 5 %. Keywords : Drop voltage, distribution, ETA