Analisa Nilai Kapasitas dan Efisiensi Baterai 110 VDC Gardu Induk Kisaran Berdasarkan Umur Baterai dengan Metode Pengosongan (Discharging)

Abstract

The battery is one of the supporting components that is very vital at the substation because the battery must be able to supply power to the protection equipment even in conditions without a charger or blackout. For this reason, it is necessary to have maintenance in the form of battery discharge testing to determine the condition of the battery. This study aims to determine the feasibility of bank 1 and bank 2 110 vdc batteries that have been operating for more than 10 years so that they can then be compared with the standards that apply to PLN. The test results show that bank 1 battery has a capacity of 188.2 Ah and an efficiency of 81.97% in 2019 and in 2021 it has a capacity of 164.1 Ah and an efficiency of 81.55%. At bank 1 within 2 years, there was a decrease in capacity of 12.05%. Then for battery bank 2 it has a capacity of 210.9 Ah and an efficiency of 79.02% in 2020 while in 2022 it has a capacity of 136.3 Ah and an efficiency of 83.32%. At bank 2 within 2 years, there was a decrease in capacity of 35.34%. Based on the capacity and efficiency values, it can be concluded that the battery is still suitable for use.