The comparation drop voltage analysis in power flow of gandul substation

Abstract

This study aims to determine the results of the drop voltage transformer 4 with 10 bus power at the Gandul Substation of PT. PLN (Persero) with MATLAB Power System Analysis Toolbox (PSAT) 2.1.7 and ETAP software 12.6. Data analysis technique used in this study is quantitative descriptive analysis method. Power flow simulation with MATLAB PSAT 2.1.7 software completed at 0.066 s with two iterations (first iteration shows Maximum Convergency Error 0.0011257 and second iteration shows Maximum Convergency Error 1.2621e-06), and ETAP 12.6 software complete in three iterations. Meanwhile, the results of voltage drop with MATLAB PSAT 2.1.7 software and ETAP 12.6 have a fairly small error. Almost every feeder has the same error. The conclusion in this study is that the results of the simulation of drop voltage with MATLAB Power System Analysis Toolbox 2.1.to ETAP 12.6 software has a difference of 0.02 with a percentage error of 0.1%. Each feeder has a small error.