STUDY OF LOCATION AND CAPACITY OF CAPACITOR BANK ON DURIAN 4’S FEEDER OF PT. PLN (PERSERO) ULP RASAU JAYA

Abstrak

Durian 4 PT PLN (Persero) ULP Rasau Jaya is a radial structure with a length of 234.391 km, has 131 distribution transformers with a total of 151 buses, so the voltage drop on the line is unavoidable. This research aims to improve the voltage profile through the installation of capacitor banks by determining the location and capacity of capacitor banks and analysing the effect of capacitor bank installation on voltage drops. The research methodology involves power flow analysis current injection method and voltage stability index Fast Voltage Stability Index (FVSI) method, Line Stability Factor (LQP), and Loss Sensitivity Factor (LSF) method for capacitor bank location determination. From the initial measurement results, the voltage drop percentage of Durian 4 repeater has exceeded the SPLN T6.001 2013 standard limit (± 10%). Where in the existing condition the percentage of voltage drop is 21.071% with a minimum bus voltage of 15.7858 kV and a total active power loss of 365.560 kW. In scenario 1, the minimum bus voltage is 16.5548 kV with a voltage drop percentage of 17.226% and active power losses of 292.248 kW. In scenario 2, the minimum bus voltage is 17.6373 kV with a voltage drop percentage of 11.814% and active power losses of 281.220 kW. In scenario 3, the voltage profile has met SPLN T6.001 Year 2013, where the minimum voltage is 18.1183 kV with a voltage drop percentage of 9.408%, and active power losses of 276.528 kW. The capacitor bank placement strategy using the FVSI, LQP, and LSF methods is effective in improving the voltage profile, ensuring all buses meet SPLN T6.001 Year 2013, and reducing active power losses significantly.