PERGARUH_PENGOPERASIAN_FILTER_AKTIF_BERBASIS _KONTROL_PID _TERHADAP_KAPASITAS KERJA TRANSFORMATOR DISTRIBUSI DI GEDUNG_ STUDENT_CENTER_UNIVERSITAS_UDAYANA

Abstract

The transformer is one of the equipmen for distributing electrical_energy from_medium
voltage 20 kV to low voltage 380/220 V. Disturbance in the transformer_can_cause_Losses
so that it can disrupt the flow of electric power to consumers. Harmonics_are disturbances
caused by the operation of non-linear loads. This study aims to determine the effect of THDi
on power Losses and working capacity of transformers at Udayana University Student Center
Building with harmonics in the R phase of 10.91%, the S phase of 11.38%, and_the T phase of
17.91%. The method used is to perform simulations and
analysis_with_the_results_of_harmonic measurements in Existing conditions, using an active
filter, and an active PID-based filter using the Matlab application. Very optimal results were
obtained using a PID-based active_filter with the results of R = 0.31%, S = 0.30%,_T =
0.35%,_and the decrease in the working_capacity_of_the_transformer_decreased_to
1%,_according _to_the_ideal_value.