ABSTRACT

IMANUEL DAMASAR. A Y-Bus Gauss-Seidel Method for the Primary Distribution Network Power Losses Analysis (supervised by Muhammad Tola and Akhmad Toyib Rahardjo).

The goal of this research project is to determine the active power losses and the voltage drop in a primary distribution network. Three feeders at Bitung Power Station, North Sulawesi, have been taken as samples. A primary distribution network at Manado Branch of PT. PLN (the state owned electrical power company) has been surveyed from July until October 2005 to collect primary data. A power flow study with the Y-Bus Gauss-Seidel method written in FORTRAN programming language has been used for data-analysis. 

The results have shown that 20 kV primary distribution feeders SI 1, SI 2 and SI 6 at Bitung Power Station have active power losses varying from 2.45% to 6.47% and voltage drop varying from 0.1% to 12.5%.