Dc Battery Optimization in 275 Kv Main Gardu to Improve the Reliability of the Control System

Abstract

This research focuses on optimizing the DC 110 V battery at the 275 KV substation in Pijorkoling Padangsidempuan, North Sumatra. By measuring the inverter connected to the battery side and the Human Machine Interface, it is found that the value of harmonic currents is in several orders, but because harmonic currents are in the 5th order, 11th order, 15th order, the author makes the LCL Passive Filter. on the output side of the inverter and Human Machine Interface in the hope of reducing the harmonic current. To make it easier for the author in the research, it was carried out using a mathlab-simulink simulation. The result is that the THDi inverter on the inverter decreases from 110.9% to 49.57% or it is reduced by 223.72%.