ABSTRACT

MULIATY YANTAHIN.  A Simulation of the Series Capacitor Compensator Application to Reduce the Voltage-Dip Effects in the Electrical Arc Furnace Operation (supervised by Rhiza S. Sadjad and Yustinus Upa Sombolayuk).

The goal of this research project is to show how the series capacitor compensator can reduce the effects of voltage-dip problem in an electrical arc furnace operation. The case of PT. Krakatau Steel (a major steel company in Indonesia) is taken into consideration. A 195 KVA/220 V arc furnace operating in the company is known to cause voltage-dip problem in the surrounding distribution system supplied by a 400 MW electrical power plant. The dip is recorded as ranging from 8 % to 17 %. 

The calculation predicts that a series capacitor compensator can reduce the voltage-dip of 8 % to 1.81 % and the voltage-dip of 17 % to 5.80 %. The simulation using SIMULINK of MATLAB rev. 6.5 has shown that the voltage-dip of 8 % can be actually reduced up to 1.86 % and the voltage-dip of 17 % to 5.88 %.